WO2012014269A1 - 熱交換器システム - Google Patents
熱交換器システム Download PDFInfo
- Publication number
- WO2012014269A1 WO2012014269A1 PCT/JP2010/062530 JP2010062530W WO2012014269A1 WO 2012014269 A1 WO2012014269 A1 WO 2012014269A1 JP 2010062530 W JP2010062530 W JP 2010062530W WO 2012014269 A1 WO2012014269 A1 WO 2012014269A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- heat exchanger
- partition wall
- seawater
- region
- flow path
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/0206—Heat exchangers immersed in a large body of liquid
- F28D1/022—Heat exchangers immersed in a large body of liquid for immersion in a natural body of water, e.g. marine radiators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B3/00—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
- F28B1/02—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using water or other liquid as the cooling medium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0061—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for phase-change applications
- F28D2021/0063—Condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0061—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for phase-change applications
- F28D2021/0064—Vaporizers, e.g. evaporators
Definitions
- the present invention relates to a heat exchanger installation structure in which a heat exchanger that exchanges heat with a working fluid using seawater or the like as cooling water is installed in a flow path of cooling water so that heat exchange is performed.
- JP-A-53-56748 An example of such a plate-type heat exchanger is described in JP-A-53-56748.
- heat exchange is performed by alternately circulating a fluid to be heat exchanged between heat exchange plates in a stacked state.
- the conventional plate-type heat exchanger has a structure as shown in the above-mentioned patent document, and can efficiently exchange heat while ensuring the maximum heat transfer area, but has a structure in which plates are stacked while providing a small gap.
- the flow path of the heat exchange target fluid is extremely narrow, and the pressure loss per flow path length is larger than other types.
- plates are usually formed by pressing using a mold, when trying to manufacture a large plate, it is necessary to use a large mold and press machine. Due to the above constraints and cost, it is difficult to increase the size, and there is a limit to the increase in size of the plate. Due to such pressure loss and plate manufacturing restrictions, it is difficult to simply increase the size of a plate heat exchanger in order to increase the heat exchange capacity. A configuration in which a large number of small heat exchangers are arranged has to be taken.
- the present invention has been made to solve the above problems, and even when a large number of plate-type heat exchangers are arranged, a large amount of cooling water can be introduced without difficulty, and piping problems can be avoided. It aims at providing the heat exchanger system which can reduce cost.
- a heat exchanger system includes a plurality of heat exchange plates made of a substantially rectangular thin metal plate arranged in parallel, and one heat exchange plate adjacent to each other at two predetermined end portions that are substantially parallel to each other. While being welded in a watertight state, they are welded together in a watertight state at other two adjacent heat exchange plates and other substantially parallel two end portions that are substantially orthogonal to the two end sides, and are integrated together for each heat exchange.
- a heat exchanger main body for generating every other first flow path for the working fluid and second flow path for the heat exchange fluid between the plates, and communicating with the first flow paths of the heat exchanger main body;
- a partition wall having a through hole through which a heat exchange fluid passes is joined to the heat exchanger body, and the heat exchange fluid is circulated between the regions divided by the partition wall.
- the heat exchanger system connects the two regions where the heat exchanger main body and the partition wall sandwich the partition wall to an external space where a large amount of natural water exists, as necessary.
- Natural water is present in the region as the heat exchange fluid, and the natural water naturally flows into the second flow path of the heat exchanger body, and one of the two regions is the external space.
- Natural water is allowed to exist in the same state as the external space, and the other area is opened to the atmosphere, and the water level of the other area is set by the pressurization or suction of natural water by mechanical means. It is different from the natural water level in the space.
- the heat exchanger main body and the partition wall are arranged in a state where natural water naturally flows into the second flow path of the heat exchanger main body, and one of the two regions sandwiching the partition wall. Natural water is allowed to flow in naturally, and one area is left in the same condition as the external space with natural water, while the water level in the other area is set to a water level different from the natural water surface of the external space, and the head difference between the areas is different. Natural water is generated in the second flow path of the heat exchanger body, and natural water is easily introduced into the heat exchanger body in the vicinity of seas, rivers, and lakes where natural water is present in large quantities. However, the flow is obtained by the head difference based on the natural water level of natural water, and even if the mechanism for giving the head difference is simplified, the flow of natural water can be appropriately generated to allow heat exchange. , The cost of heat exchange can be reduced .
- the heat exchanger system sets, as necessary, at least one of the two regions sandwiching the partition wall to a size that allows an operator to enter the region and work.
- the existing heat exchanging fluid can be adjusted to a lower liquid level than the heat exchanger body or a state not existing in each region by discharging the fluid from the two regions to the outside by mechanical means.
- the present invention it is possible to secure a work space for an operator in at least one of the two regions sandwiching the partition wall, and to lower the water level of the heat exchange fluid at least below the heat exchanger body.
- the operator can directly perform the work on the heat exchanger body and the water level has been reduced.
- the heat exchange fluid does not become an obstacle to the work of the operator, and the work related to the maintenance of the heat exchanger body can be easily performed, and the workability for such a heat exchanger body is improved, and the heat exchanger body Can be managed effectively by managing properly.
- the heat exchanger system according to the present invention is formed as a substantially annular shape in which the partition wall surrounds a region as necessary, and a plurality of through holes are formed side by side in the continuous circumferential direction of the partition wall.
- a plurality of the heat exchanger main bodies are arranged side by side on the outer peripheral side or inner peripheral side of the partition wall so as to correspond to the through holes of the partition wall.
- the partition wall has a substantially annular shape, and a plurality of heat exchanger bodies are arranged in the circumferential direction of the partition wall, and the partition wall is directed from the outer region to the inner region, or the partition wall.
- the heat exchanger main body is formed with a flange at an opening portion on one side of the second flow path, and the flange is formed around the through hole of the partition wall.
- a pipe that is detachably attached as a watertight state and has a shape that allows the working fluid to flow in and out from the heat exchanger body toward the partition, and is formed with a flange that is detachably attached to the partition as a watertight state.
- the partition wall is formed with another through hole through which the working fluid passes in a portion connecting the flange of the pipe line, and on the surface opposite to the side connecting the flange of the pipe line.
- the other through-holes and other pipes for circulating the working fluid communicating with the pipes are connected and arranged in a watertight state.
- the joint portion with the partition wall in the heat exchanger main body has a flange structure, and the flange joint portion with the partition wall is provided also for the pipeline that allows the working fluid to flow into and out of the heat exchanger body,
- the heat exchanger body and the pipe line can be integrally attached to and detached from the partition wall.
- the working fluid side conduit is temporarily removed or loosened and shifted, which may be an obstacle to the heat exchanger body attachment / detachment work. This eliminates the trouble of preventing the failure and allows the pipe line to be handled integrally with the heat exchanger body so that it can be easily and quickly attached to and detached from the partition wall, thereby greatly improving the workability of maintenance and replacement.
- the heat exchanger system according to the present invention is provided with a through-hole communicating with each of the second flow paths of the heat exchanger body as necessary, and the other of the second flow paths in the heat exchanger body.
- Another partition is provided to be joined to the opening.
- the other partition wall facing the partition wall is disposed across the heat exchanger body, and the outer portion of the heat exchanger body located between the partition wall and the other partition wall and the working fluid side are arranged.
- FIG. 1 is a schematic configuration diagram of a heat exchanger system according to a first embodiment of the present invention. It is a schematic block diagram of the electric power generation system to which the heat exchanger system which concerns on the 1st Embodiment of this invention is applied. It is a front view of the heat exchanger main body in the heat exchanger system which concerns on the 1st Embodiment of this invention. It is the top view and intermediate
- the heat exchanger system 1 includes a first flow path 10b through which a working fluid passes and a second through which seawater as a heat exchange fluid passes by integrating a plurality of heat exchange plates 10a in parallel.
- a first partition wall 12 provided with a through hole 12a communicating with each second flow path 10c of the main body 10 and being joined to one opening portion of the second flow path 10c of the heat exchanger main body 10,
- a through hole 13a that communicates with each second flow path 10c of the heat exchanger body 10 is formed, and the other one of the other openings disposed in a joint with the other opening portion of the second flow path 10c in the heat exchanger body 10 is provided.
- a second partition wall 13 as a partition wall, the first partition wall 12, heat A partition wall 16 that partitions the two regions 14 and 15 leading to the second flow path 10c of the heat exchanger main body 10 with the exchanger main body 10 and the second partition wall 13 therebetween, and the two regions 14 and 15 It is the structure provided with the pump 17 which produces a head difference between each seawater.
- a power generation system 50 using a steam power cycle in which the heat exchanger system of the present embodiment is used is a power for power generation by a phase change of a working fluid that is a low boiling point medium such as ammonia that exchanges heat with a high-temperature heat source such as surface seawater. Is what you get.
- This power generation system 50 includes a heat exchanger system 1 as an evaporator that heats the working fluid by exchanging heat between the working fluid (ammonia and the like) and the surface seawater as the high-temperature heat source, and the heat exchanger system 1
- the obtained high-temperature gas-phase working fluid is introduced to operate, and the turbine 51 that converts thermal energy held by the working fluid into power, the generator 52 that is driven by the turbine 51, and the working fluid that exits the turbine 51
- the condenser 53 is condensed to a liquid phase by heat exchange with cold deep seawater or the like, and a pump 54 for feeding the liquid phase working fluid taken out of the condenser 53 to the heat exchanger system 1 is provided. Yes (see FIG. 2).
- the respective devices that establish the steam power cycle of the power generation system 50 are the same as those used in a known steam power cycle for ocean temperature difference power generation, and detailed description thereof is omitted.
- the heat exchanger main body 10 has a plurality of heat exchange plates 10a made of a substantially rectangular thin metal plate arranged in parallel with one heat exchange plate adjacent to each other at two predetermined end portions that are substantially parallel to each other. While being welded as a state, each other heat exchange plate is welded as a watertight state at another two adjacent heat exchange plates adjacent to each other and two other substantially parallel two end portions that are substantially orthogonal to the two end sides.
- a first flow path 10b through which the working fluid passes between 10a and a second flow path 10c through which seawater as the heat exchange fluid passes are formed every other, and the working fluid passing through the first flow paths 10b and the first flow paths 10c are generated. The seawater passing through the two flow paths 10c forms an orthogonal flow.
- the heat exchanger body 10 has a flange 10d formed in one opening portion of the second flow path 10c and a flange 10e formed in the other opening portion of the second flow path 10c.
- the flange 10e is detachably attached to the peripheral part of the through hole 12a of the one partition wall 12 and the peripheral part of the through hole 13a of the second partition wall 13 in a watertight state.
- the heat exchanger body 10 is a fluid for exchanging heat at a point where seawater as natural water has a natural water surface (sea surface) and exists in a large amount, for example, at a waterfront with a sufficient depth on the coast or in a ship on the sea.
- the seawater is disposed together with the first partition wall 12 and the second partition wall 13. More specifically, the heat exchanger body 10 has the first partition wall 12 and the second partition wall 13 such that the second flow path 10c of the heat exchanger body 10 is positioned below the natural sea surface WL of seawater. It is the structure arrange
- the first partition wall 12 is formed as a wall having a sufficient height so that seawater as a heat exchange fluid does not go to the heat exchanger main body 10 side beyond the upper end, and the heat exchanger main body 10 is disposed.
- a through hole 12a is formed in correspondence with each other, and a portion around the through hole 12a is joined to one flange 10d of the second flow path 10c in the heat exchanger main body 10 in a watertight state, and the heat exchanger main body 10 It is the structure integrated.
- a filter 12b is disposed throughout the through-hole 12a of the first partition wall 12, and the seawater toward the heat exchanger main body 10 is filtered by the filter 12b so that impurities flow into the heat exchanger main body 10. It is preventing.
- the second partition wall 13 is formed as a wall having a sufficient height so that seawater as a heat exchange fluid does not go to the heat exchanger body 10 side beyond the upper end, and the heat exchanger body 10 is disposed.
- a through-hole 13a is formed corresponding to the heat-exchanger main body 10, and a portion around the through-hole 13a is joined to the other flange 10e of the second flow path 10c in the heat exchanger main body 10 in a watertight state. It is the structure arrange
- the through-hole 13a of the second partition wall 13 is also provided with a filter 13b throughout, and the seawater that is directed to the heat exchanger body 10 at the time of backwashing is filtered by the filter 13b. It is a mechanism that prevents inflow.
- the two regions 14 and 15 that communicate with the second flow path 10 c of the heat exchanger body 10 sandwich the first partition wall 12 and the second partition wall 13. Will be set. These two regions 14 and 15 are partitioned from the outside by a partition wall 16 and have a predetermined size.
- the two regions 14 and 15 are not isolated from the surroundings and are open to the atmosphere, and among these, the region 15 adjacent to the second partition wall is a natural inflow of seawater from the outside through the open part of the partition wall 16.
- the seawater exists as a water level that substantially matches the natural sea level WL.
- seawater is also present in the region 14 adjacent to the first partition wall 12 due to natural inflow through the open portion of the seawater partition wall 16, and the seawater level in this region 14 is increased by pressurization by the pump 17.
- the water level is higher than the water level in the region 15.
- a water level difference position head difference
- first partition wall 12 and the second partition wall 13 having through holes are provided around the heat exchanger body 10, and there is no pressure vessel or the like that covers the heat exchanger body 10, so that the heat exchanger body 10 is extremely easy for the operator to access, maintenance work such as visual inspection and washing for the heat exchanger main body 10 can be surely performed, and even biological stains resulting from the use of seawater as the heat exchange fluid can be washed, etc. Can respond appropriately.
- the partition wall 16 is configured as a wall body disposed so as to surround the first partition wall 12, the heat exchanger body 10, and the second partition wall 13 from the side and below.
- the partition wall 16 includes auxiliary partition walls 16a and 16b that divide each of the regions 14 and 15 into a portion closer to the partition wall and a portion away from the partition wall, in addition to the outermost peripheral portion that partitions the two regions 14 and 15 with respect to the outside. ing.
- seawater outlets 16c and 16d that can be opened and closed are provided near the partition walls below the partition wall 16, and the seawater flowing through the heat exchanger body 10 flows out of the area from the seawater outlet due to the head difference. is there.
- the partial region 14a of the region 14 that is separated from the first partition 12 and the partial region 15a of the region 15 that is separated from the second partition 13 are divided by the auxiliary partitions 16a and 16b of the partition wall 16 and the communication channel. (Illustration is omitted).
- a pump 17 is disposed in a partial region 14 a separated from the first partition wall 12 in the region 14 divided by the auxiliary partition wall 16 a in the partition wall 16. The pump 17 pressurizes seawater to increase the water levels in the partial areas 14a and 15a, and simultaneously causes seawater to flow into the partial areas 14a and 15a from the outside.
- the height of the auxiliary partition walls 16a and 16b is adjustable, and is a mechanism for determining the flow direction of seawater in the second flow path 10c of the heat exchanger body 10 in combination with opening and closing of the seawater outlets 16c and 16d.
- the height of the auxiliary partition wall 16a in the region 14 is lowered, the seawater outlet 16c near the first partition wall 12 is closed, and the partial region 14b near the first partition wall 12 from the partial region 14a in the region 14 is closed.
- the height of the auxiliary partition 16 b in the region 15 is increased to partition the region 15 smaller and the seawater outlet 16 d near the second partition 13.
- the water level of the partial region 15b near the second partition wall 13 is substantially the same as the sea level WL, and the flow of seawater from the region 14 to the region 15 through the heat exchanger body 10 is caused by the head difference thus provided. Will be generated.
- the seawater that has passed through the through hole 12a, the second flow path 10c of the heat exchanger main body 10, and the through hole 13a flows out of the region 15 from the seawater outlet 16d.
- the height of the auxiliary partition 16a in the region 14 is increased, the height of the auxiliary partition 16b is decreased, the seawater outlet 16c near the first partition 12 is opened, and the seawater outlet 16d near the second partition 13 is opened.
- the area 14 is further divided by the auxiliary partition wall 16a, and the water level of the partial area 14b is made substantially the same as the sea level by the inflow and outflow of seawater through the seawater outlet 16c.
- the auxiliary partition wall 16b having a lowered region 15 allows the inflow of water from the partial region 15a away from the second partition wall 13 to the partial region 15b near the second partition wall 13,
- the seawater outlet 16d is blocked and the seawater is not directed to the outside, and the water level in the region 15 is made higher than the sea level WL based on the operation of the pump 17, thereby reducing the head difference.
- causing a flow of water towards the region 14 through the heat exchanger body 10 from the region 15 is a mechanism that allows the backwash of the heat exchanger body 10.
- seawater that has passed through the through-hole 13a, the second flow path 10c of the heat exchanger main body 10, and the through-hole 12a is outside the region 14 from the seawater outlet 16c near the first partition 12 that is open. It is a mechanism that flows out.
- the heat exchanger system is an evaporator in a steam power cycle for power generation, and a liquid-phase working fluid is caused to flow into the first flow path 10b of the heat exchanger main body 10 to be exchanged with seawater that is a heat exchange fluid. It is assumed that the working fluid is changed to a gas phase by heat exchange, and the high-temperature gas-phase working fluid exits the heat exchanger body 10 and goes to the rear stage side of the steam power cycle.
- the height of the auxiliary partition 16a in the region 14 adjacent to the first partition 12 is set lower than the sea level WL, and conversely, the height of the auxiliary partition 16b in the region 15 adjacent to the second partition 13 is set. The height is higher than the sea level WL. Further, the seawater outlet 16c near the first partition wall 12 is closed, and the seawater outlet 16d near the second partition wall 13 is opened.
- seawater is present due to natural inflow of seawater.
- the area 15 adjacent to the second partition wall 13 is divided into the partial areas 15 a and 15 b by the auxiliary partition wall 16 b, and the seawater level in the partial area 15 a remote from the second partition wall 13 is a part of the other area 14.
- the sea water naturally flows in through the open sea water outlet 16d at the lower part of the partition wall 16, and the water level almost matches the natural sea level WL. Exist as.
- the heat exchange fluid is seawater that exists in a very large amount, the influence of the heat held by the seawater after heat exchange given to the entire seawater after the seawater after heat exchange diffuses into the outside sea is almost It can be ignored, and it can be considered that the temperature change does not occur in the seawater newly introduced to the heat exchanger main body 10 sequentially as the heat exchange is continued, and the heat exchange can be continuously performed under the same temperature condition as the beginning of the heat exchange.
- the height of the auxiliary partition 16a in the region 14 adjacent to the first partition 12 is higher than the sea level WL, as opposed to the normal use state.
- the height of the auxiliary partition wall 16b in the region 15 adjacent to 13 is lower than the sea level WL.
- the seawater outlet 16c near the first partition 12 is opened, and the seawater outlet 16d near the second partition 13 is closed. And the flow of the working fluid which passes along the 1st flow path 10b of the heat exchanger main body 10 will be stopped, and it will be in the state which stopped heat exchange temporarily.
- seawater is present due to natural inflow as in the normal use state, but adjacent to the first partition wall 12.
- the area 14 is divided into the partial areas 14a and 14b by the auxiliary partition wall 16a, and the water levels of the seawater in the partial areas 14a and 14b are different from each other.
- the water level of the seawater in the partial area 14a away from the first partition wall 12 is higher than the natural sea level WL due to not only the natural inflow of seawater through the intake 16e but also the pressurization by the pump 17, and
- seawater naturally flows through the open seawater outlet 16c at the lower part of the partition wall 16, and the seawater exists as a water level that substantially matches the natural sea level WL.
- the seawater naturally flows through the partial region 14 a that communicates with the partial region 15 a through a communication channel (not shown), and the pump 17 of the partial region 14 a.
- the sea level in the region 14 is substantially the same as that in the partial region 14a, and the water level is higher than that in the partial region 14b.
- the heat exchange is performed, and the heat adheres to the surface of each heat exchange plate 10a forming the second flow path 10c.
- the dirt can be removed by removing with a water flow opposite to that during heat exchange, that is, backwashing can be performed.
- the seawater from which dirt has been removed in the second flow path 10c of the heat exchanger body 10 passes through the through hole 12a of the first partition wall 12 according to the flow and reaches the partial region 14b, and the seawater is in an open state. It flows out of the region 14 from the seawater outlet 16c near the one partition wall 12, and diffuses into the outside sea.
- new seawater enters the partial region 14 a of the region 14 from the intake port 16 e, reaches the region 15, and is used for removing dirt in the heat exchanger body 10, The above steps are repeated while continuing the backwash operation.
- the partition wall 12 having the through hole 12a through which seawater as a heat exchange fluid passes is joined and disposed to the heat exchanger main body 10.
- the sea water is circulated between the regions 14 and 15 divided by the above, and the heat exchange fluid is introduced into the second flow path 10c side of the heat exchanger main body 10 without passing through the pipeline.
- This eliminates the need for pipes on the side reduces the costs associated with pipes, saves pipe installation space, and eliminates the need to handle seawater pipes when removing the heat exchanger body 10. It becomes.
- maintenance work such as inspection and cleaning of the heat exchanger main body 10 can be reliably performed, and biological dirt generated as a result of using seawater as a heat exchange fluid can be appropriately handled.
- the heat exchanger main body 10 is configured to be provided alone, but the present invention is not limited to this, and a plurality of through holes are formed side by side in the partition wall, corresponding to the through holes.
- a plurality of heat exchanger bodies may be arranged side by side between the partition walls.
- the heat exchanger system which concerns on the said embodiment, it is set as the structure which provides two partition walls 12 and 13 in the opposing state on both sides of the heat exchanger main body 10,
- a partition is the heat exchanger main body 10's. It can also be set as the structure arrange
- one opening portion and the other opening portion of the second flow path 10c in the heat exchanger main body 10 are arranged to face each other, and flows into the opening portion to enter the second flow.
- the seawater flowing through the road is straightened as it is, and the working fluid and seawater form a cross flow, but this is not a limitation.
- one opening position of the second flow path is on the upper side, and the other opening position is on the lower side.
- the seawater, which is biased and directed from one opening position to the other opening position or vice versa, is countercurrent or cocurrent to the working fluid at an intermediate position between the openings in the second flow path. It can also be set as the structure which can be set, and can be set to the suitable flow relationship according to a use condition.
- the heat exchanger system includes a heat exchanger body 20, a pipe 21, a partition wall 22, a partition wall 26, and a pump 27, as in the first embodiment.
- the partition wall 22 is formed as a continuous annular shape surrounding a single region 24, a plurality of through holes 22a are formed side by side in the circumferential direction of the partition wall 22, and the heat exchanger
- the main body 20 has a configuration in which a plurality of main bodies 20 are disposed around the outer periphery of the partition wall 22 so as to correspond to the respective through holes 22a.
- the heat exchanger body 20 is welded and integrated with a plurality of heat exchange plates 10a made of a substantially rectangular thin metal plate in a parallel state, and operates between the heat exchange plates 10a.
- the first flow path 10b through which the fluid passes and the second flow path 10c through which the seawater as the heat exchange fluid passes are generated every other (see FIG. 5), and the working fluid passing through the first flow paths 10b and the The seawater passing through each of the second flow paths 10c forms an orthogonal flow, and detailed description thereof is omitted.
- the heat exchanger body 20 has a flange 20d formed in one opening portion of the second flow path 10c, and the flange 20d is in a watertight state around the through hole 22a of the partition wall 22. It is the structure attached so that attachment or detachment is possible.
- seawater as a heat exchange fluid is below the natural water surface (sea surface) of seawater as natural water, for example, in the sea close to the sea surface, and the second flow path 10 c of the heat exchanger main body 20. It is arranged together with the partition wall 22 as a state of naturally flowing into. More specifically, the heat exchanger body 20 is arranged so that the heat exchanger body 20 is entirely located below the natural sea level position of seawater.
- the partition wall 22 is formed as an annular wall body capable of isolating seawater as a heat exchange fluid inside and outside the wall, and has a through hole 22a corresponding to the position where each heat exchanger body 20 is disposed.
- the peripheral portion of the through hole 22a is joined to one flange 20d of the second flow path 10c in the heat exchanger main body 20 in a watertight state and integrated with each heat exchanger main body 20.
- the heat exchanger bodies 20 are arranged at equal intervals on the outer periphery of the partition wall.
- two regions 24 and 25 communicating with the second flow path 10c of the heat exchanger body 20 are set with the partition wall 22 interposed therebetween.
- the region 24 is an inner region surrounded by the partition wall 22, and the outer region 25 of the partition wall 22 is partitioned from the outside by a partition wall 26 to have a predetermined size.
- a size is secured so that an operator can enter at least each region and can sufficiently perform operations such as cleaning on each heat exchanger body 20.
- seawater can naturally flow through the pipes 26a and 26b, and both the regions 24 and 25 are partitioned from the outside. With the natural inflow of seawater through the open portion of the wall 26, the seawater will be present throughout the area. Among these, in the area
- FIG. 1 the pressure of the existing seawater is made into the state lower than the pressure in the outer area
- the heat exchanger body 20 and the partition wall 22 are disposed in the sea below the natural sea level position of seawater, and the two areas 24 and 25 are maintained in communication with the outside, so that the two areas
- seawater is naturally introduced into the whole of 24 and 25, and the second flow path 10c of the heat exchanger body 20 is naturally filled with seawater. It is not necessary to employ a complicated structure such as a pipe line communicating with the two flow paths 10c.
- the partition wall 26 is configured as a wall body disposed so as to surround the heat exchanger body 20 and the partition wall 22 from the side and from above and below.
- openings are provided at locations facing the areas 24 and 25 of the partition wall 26, and pipes 26a and 26b for circulating seawater are connected to the openings, and the seawater is supplied to the area 24 through the pipes 26a and 26b.
- 25 is a mechanism for inflow and outflow.
- a pump 27 that sucks seawater in the region 24 through the pipe line 26a is disposed outside the partition wall 26, and external seawater flows into the region 25 through the pipe line 26b as the seawater is sucked in the area 24. Become.
- region 24 inside the partition 22 is the same in the positional relationship of the pipe line 26a and each heat exchanger main body 20, and in the area
- the positional relationship with each heat exchanger body 20 is the same.
- the heat exchanger main body close to the pipe line 26b and the heat exchanger main body far from the pipe line 26b are generated and become biased, and the inflow of seawater to each heat exchanger main body 20 is not allowed as it is. Since it becomes uniform, the arrangement of the partition wall 26 on the outside of the partition wall 22 is optimized, and the seawater that has exited the pipeline 26b in the region 25 is evenly distributed to each heat exchanger body 20 in the region 25. It is preferable to configure to flow in, or to provide a plurality of connection positions of the pipelines 26b in the partition wall 26 around the partition wall 22 so that seawater can be uniformly introduced into the heat exchanger bodies 20.
- heat exchange is continuously performed between the working fluid in the first flow path 10b and the seawater in the second flow path 10c. be able to. Since the heat exchange fluid is seawater, the temperature change of the whole seawater after the heat exchange seawater diffuses into the external seawater can be ignored, and heat exchange can be continued under the same temperature conditions. Can be considered.
- the seawater that has finished heat exchange in the second flow path 10c of the heat exchanger main body 20 passes through the through hole 22a of the partition wall 22 according to the flow and reaches the region 24. Further, along with the operation of the pump 27, the seawater is partitioned. It reaches the pipe line 26 a from the opening of the wall 26 and flows out of the region 24. The seawater that has passed through the pipeline 26a finally diffuses into the outside sea. On the other hand, new seawater enters the region 25 through the pipe line 26b and is used for heat exchange in the heat exchanger body 20, and the above processes are repeated during use of the system.
- seawater is present due to natural inflow.
- the pressure of the seawater in the region 24 inside the partition wall 22 relative to the region 25 outside the partition wall 22 is not only the natural inflow of seawater through the conduit 26a, but also a backwash pump (not shown). With the pressurization by the pressure, the pressure in the region 25 becomes higher.
- the heat exchange is performed, and the heat adheres to the surface of each heat exchange plate 10a forming the second flow path 10c.
- the dirt can be removed by removing with a water flow opposite to that during heat exchange, that is, backwashing can be performed.
- the seawater from which dirt has been removed in the second flow path 10c of the heat exchanger body 20 exits the second flow path 10c according to the flow and reaches the region 25. Further, the seawater reaches the pipe line 26b from the opening of the partition wall 26. , Flows out of the region 25. The seawater that has passed through the pipeline 26b eventually diffuses into the outside sea. On the other hand, along with the operation of the backwash pump, new seawater enters the region 24 through the pipe 26a and is used for removing dirt in the heat exchanger body 20, and each of the above processes performs the backwash operation. Repeated for the duration.
- seawater is discharged from the two regions 24 and 25 through the pipelines 26a and 26b using mechanical means (pumps and the like).
- the natural inflow of the seawater into the two regions 24 and 25 is completely suppressed, and the seawater level in the two regions 24 and 25 is lowered to a level that does not hinder the work on the heat exchanger body 20.
- seawater is not present in each region.
- the operator enters the region 24 and the region 25 and performs operations such as high temperature, high pressure water and cleaning liquid injection to the heat exchanger main body 20, and attachment / detachment and replacement of the heat exchanger main body 20 with respect to the partition wall 22. It will be done directly.
- the partition wall 22 is formed as an annular shape surrounding the region 24, and a plurality of heat exchanger bodies 20 are disposed on the outer periphery of the partition wall 22.
- the heat exchanger body 20 is disposed around the heat exchanger body 20. Since there is no pressure-resistant container to cover, the worker's access to the heat exchanger main body 20 is extremely easy, and maintenance work such as visual inspection and cleaning for the heat exchanger main body 20 can be performed reliably. From the inner region 24 of the partition wall 22, it is possible to collectively perform operations such as cleaning of the second flow path 10 c of each heat exchanger body 20, and the operator can proceed with the minimum necessary movement, so that the workability is improved. Excellent.
- the partition wall 22 has an annular shape, and the heat exchanger body 20 is arranged in the circumferential direction of the partition wall 22, and seawater as a heat exchange fluid. Since the flow from the outside to the inside of the partition wall 22 is set, the same two regions leading to the respective second flow paths 10c are set for the plurality of heat exchanger bodies, and the heat exchange fluid is simply introduced into the regions, and While being able to take out from an area
- the partition wall 22 has an annular shape, and the heat exchanger body 20 is attached to the outside thereof at equal intervals.
- various annular shapes such as a rectangle, a rectangle, a polygon other than a square such as a triangle, or an ellipse or an ellipse can be adopted.
- each heat exchanger body 20 is formed with a flange 20d at an opening portion on one side of the second flow path 10c in the region 25 outside the partition wall. While 20d can be detachably attached to the partition wall 22, the working fluid side pipe line 21 exists only in the region 25 and is not particularly considered for attachment / detachment, but is not limited thereto. As shown in FIG. 10, the working fluid side pipe line 29 is shaped to face the partition wall 28 from the heat exchanger body 20, and a flange 29 a attached to the partition wall 28 is formed at the end portion.
- Another through hole 28a through which the working fluid is passed is formed in a portion where the flange 29a is connected, and the through hole 28a and the pipe line 29 are formed on the surface of the partition wall 28 opposite to the side where the flange 29a is connected.
- I arranged another conduit 29b communicating, the heat exchanger body 20 and the flow path 29 may also be configured to allow installation and removal in one piece with respect to the partition wall 28. In this case, when the heat exchanger body 20 is attached to or detached from the partition wall 28 for the purpose of maintenance or the like with respect to the heat exchanger body 20, the working fluid side pipe line is once removed or loosened to shift the heat exchanger body 20.
- a plurality of through holes 22 a are formed in the partition wall 22, and the heat exchanger body 20 is disposed one by one at each through hole 22 a position in the partition wall 22.
- a plurality of heat exchanger bodies are connected in series in the flow direction of the heat exchange fluid at each through-hole position. It is also possible to increase the amount of heat exchange of the working fluid while effectively utilizing the space by disposing more heat exchanger bodies around the same partition wall area.
- FIGS. 1 and 2 A third embodiment of the present invention will be described with reference to FIGS.
- This embodiment demonstrates the example which provides each heat exchanger as an evaporator and a condenser used as the component of the steam power cycle for ocean temperature difference power generation in a marine structure.
- the heat exchanger system is configured so that a heat exchanger body 30 used as an evaporator of a steam power cycle and another heat exchanger body 40 used as a condenser operate in a mutual manner. It is arranged side by side while ensuring an independent state, and the pump 47 or the like is used in combination with a heat exchanger body different from a normal one depending on the situation, such as during backwashing.
- the heat exchanger system includes a heat exchanger main body 30 as an evaporator including a plurality of heat exchanging plates 10a as in the first embodiment, and the heat exchanger main body.
- Condensation which consists of the pipe line 31 which makes the working fluid flow in / out to 30, the upper partition 32 arrange
- a heat exchanger main body 40 as a heat exchanger, a conduit 41 through which a working fluid flows in and out of the heat exchanger main body 40, a lower partition wall 42 joined to the heat exchanger main body 40, and the upper partition wall 32.
- the heat exchanger body 30 is formed by welding and integrating a plurality of heat exchange plates 10a in parallel, and the first flow path 10b through which the working fluid passes between the heat exchange plates 10a. And every other second flow path 10c through which seawater as a heat exchange fluid passes (see FIG. 5), and working fluid passing through each first flow path 10b and seawater passing through each second flow path 10c Is a cross flow, and a detailed description thereof will be omitted.
- the heat exchanger main body 40 also has a plurality of heat exchange plates 10a that are arranged in a parallel state by welding as in the first embodiment, so that the working fluid passes between the heat exchange plates 10a. 10b and every other second flow path 10c through which seawater as a heat exchange fluid passes are generated, and the working fluid passing through each first flow path 10b and the seawater passing through each second flow path 10c flow orthogonally.
- the detailed description is omitted.
- these heat exchanger bodies 30 and 40 are formed with flanges 30d and 40d at one opening of each second flow path 10c, and the flange 30d is formed in the upper partition wall 32.
- the flange 40d is detachably attached to the peripheral portion of the through hole 32a provided in the lower partition wall 42 in the peripheral portion of the through hole 32a.
- the heat exchanger main body 30 is disposed together with the upper partition wall 32 below a natural water surface (sea surface) of seawater as natural water, for example, below a sea surface WL in an offshore structure such as a ship or a drilling rig.
- the seawater as the heat exchange fluid is configured to be able to naturally flow into the second flow path 10 c of the heat exchanger body 30.
- the other heat exchanger main body 40 is arrange
- the configuration is such that it can naturally flow into 40 second flow paths 10c.
- the upper partition wall 32 is formed as a wall body capable of isolating seawater on both sides of the wall, and has a through hole 32a corresponding to the arrangement position of the heat exchanger main body 30, and a portion around the through hole 32a is heated.
- the heat exchanger main body 30 is integrated with the flange 30d of the exchanger main body 30 in a watertight state.
- two upper regions 34 and 35 leading to the second flow path 10c of the heat exchanger body 30 are set with the upper partition wall 32 interposed therebetween. These two upper regions 34 and 35 are partitioned from the outside and other regions by partition walls 36 and 48 and have a predetermined size. At least the operator enters the region and cleans the heat exchanger body 30. A sufficient space for such operations can be secured.
- the lower partition wall 42 is formed on the lower side of the upper partition wall 32 as a wall body that can isolate seawater on both sides of the wall, and has a through hole 42a corresponding to the arrangement position of the heat exchanger body 40.
- the peripheral portion of the hole 42a is joined to the flange 40d of the heat exchanger main body 40 in a watertight state and integrated with the heat exchanger main body 40.
- the two upper regions 34 and 35 are not isolated from the surroundings and are open to the atmosphere.
- the upper region 35 on the side where the heat exchanger body 30 is located is lower than the natural sea level WL.
- the seawater on the surface layer exists in the entire area as the natural inflow flows through the open portion of the seawater partition wall 48.
- seawater also exists in the upper region 34 on the side without the heat exchanger main body 30 due to the natural inflow of seawater through the open part of the partition wall 36.
- the water level is lower than the natural sea level WL. For this reason, a head difference is given between the seawater in the upper region 34 and the seawater in the upper region 35, and the seawater flows from the upper region 35 toward the adjacent upper region 34. is there.
- the deep seawater can flow through the pipes 46a and 46b.
- 44 and 45 also cause seawater to exist in the entire region as the seawater naturally flows through the open portion of the partition wall 46.
- the pressure of the seawater which exists is made into a state higher than the pressure in the area
- the seawater flows from the lower region 44 toward the adjacent lower region 45.
- the heat exchanger bodies 30, 40, the upper partition wall 32, and the lower partition wall 42 below the natural sea surface of seawater, the two upper regions 34, 35 and the two lower regions 44, In order to allow a large amount of seawater to flow in and out, such as when seawater is naturally introduced into 45 and the second flow paths 10c of the heat exchanger bodies 30 and 40 are naturally filled with seawater, It is not necessary to employ a complicated structure such as a pipe line communicating with the second flow path 10c.
- the partition walls 36, 46, 48 are configured as wall bodies that are disposed so as to surround the heat exchanger bodies 30, 40, the upper partition wall 32, and the lower partition wall 42 from the side and top and bottom.
- seawater inflow / outflow ports 48a are provided at locations facing the upper region 35 and the outside of the partition wall 48, and the seawater flows into and out of the upper region 35 through the inflow / outflow ports 48a.
- an opening is provided at a location facing the upper region 34 of the partition wall 36, and a pipeline 36a for circulating seawater is connected to the opening, and seawater can flow into and out of the upper region 34 through the pipeline 36a. Is done.
- a pump 37 for sucking seawater is connected to the pipe line 36a, and the seawater is sucked through the pipe line 36a. Thus, it flows out from the upper region 34.
- openings are provided at locations facing the respective lower regions 44 and 45 of the partition wall 46, and pipes 46a and 46b for circulating seawater are connected thereto, and the seawater flows through these pipes 46a and 46b.
- This is a mechanism that allows inflow and out of 44 and 45.
- a pump 47 for pressurizing seawater is disposed, and the pressurized seawater flows into the lower area 44 through the pipe 46a. .
- the pipe 36a communicating with the upper region 34 and the pipe 46b communicating with the lower region 45 are provided with valves 36b and 46c, respectively, so that the outflow of seawater from each region can be stopped as necessary. It is. Furthermore, a bypass line 36c is provided between the pipe line 36a communicating with the upper region 34 and the pipe line 46a communicating with the lower region 44 so that these pipe lines communicate with each other as necessary. When the bypass pipe 36c is opened to bring the pipe 36a and the pipe 46a into communication, the valve 36b of the pipe 36a and the valve 46c of the pipe 46b are closed, and the pump 47 is operated.
- the seawater flows into the upper region 34 through the conduit 46a, the bypass conduit 36c, and the conduit 36a, and the seawater reaches the adjacent upper region 35 through the heat exchanger body 30 from the upper region 34.
- a flow can be generated and backwashing of the heat exchanger body 30 can be performed.
- the use state of the heat exchanger system according to the present embodiment will be described.
- the two upper regions 34 and 35 and the second flow path 10c of the heat exchanger body 30 have surface seawater through the inlet / outlet 48a of the partition wall 48. Seawater is present with the natural inflow.
- the region 34 on the side where the heat exchanger body 30 is not present is also accompanied by suction by the pump 37 with respect to the seawater.
- the seawater in the upper region 34 has a lower water level than the natural sea level WL (see FIG. 11).
- the heat exchanger body 30 can serve as an evaporator that evaporates the working fluid by heat exchange between the seawater and the working fluid.
- region 35 is in the state filled with seawater, naturally seawater exists also on the outer side of the pipe line 31 which flows the working fluid into and out of the heat exchanger body 30, and the warm surface layer The seawater heats the pipe 31 and warms the working fluid in the pipe 31 to promote evaporation in the heat exchanger main body 30.
- the vapor-phase working fluid once evaporated in the heat exchanger main body 30 By keeping the temperature constant, it is possible to prevent recondensation of the working fluid in the pipe 31 and maintain the gas phase state of the working fluid without taking any special measures such as disposing a heat insulating material on the pipe 31. It is possible.
- the seawater that has finished heat exchange in the second flow path 10c of the heat exchanger body 30 passes through the through hole 32a of the upper partition wall 32 according to the flow and reaches the upper region 34. Further, the seawater is an opening of the partition wall 36. To the conduit 36 a and out of the upper region 34. The seawater that has passed through the pipe line 36a is finally discharged into the sea that is not the outer surface layer by the operation of the pump 37 and diffuses. On the other hand, along with the operation of the pump 37, a new surface seawater enters the upper region 35 through the inflow / outlet port 48a and is used for heat exchange in the heat exchanger body 30. Repeated for a while.
- seawater is present in the two lower regions 44 and 45 and the second flow path 10c of the heat exchanger main body 40 along with the inflow of deep seawater through the pipes 46a and 46b. It has become.
- the lower region 44 on the side where the heat exchanger main body 40 is located where the seawater naturally flows is accompanied by pressurization of seawater by the pump 47. Therefore, the seawater in the lower region 44 has a pressure higher than the pressure in the lower region 45.
- the heat exchanger body 40 can serve as a condenser that condenses the working fluid by heat exchange between the seawater and the working fluid.
- region 45 is in the state filled with seawater, naturally seawater exists also on the outer side of the pipe line 41 which flows the working fluid into and out of the heat exchanger body 40, and the heat exchanger Even after the heat exchange in the main body 40 is finished, the deep seawater, which is lower in temperature than the working fluid, is in a state of cooling and keeping the pipe 41, and the working fluid in the pipe 41 is cooled to exchange heat.
- the liquid phase working fluid once condensed in the heat exchanger main body 40 is continuously kept warm, whereby re-evaporation of the working fluid in the pipe 41 can be prevented.
- the liquid phase state of the working fluid can be maintained without taking any special measures such as disposing a heat insulating material for 41.
- the seawater that has finished heat exchange in the second flow path 10 c of the heat exchanger body 40 exits the second flow path 10 c according to the flow and reaches the lower region 45, and further, the seawater is a pipe line from the opening of the partition wall 46. 46b and flows out of the lower region 45.
- the seawater that has passed through the pipeline 46b is finally released into the sea that is not the outer surface layer and diffuses.
- new deep seawater enters the lower region 44 through the pipe 46a and is used for heat exchange in the heat exchanger body 40. Repeated for a while.
- the pump 47 connected to the pipe 46a and sending the seawater toward the lower region 44 is in an operating state, and further, the bypass pipe 36c is opened to connect the pipe 36a and the pipe 46a. .
- the deep seawater pressurized by the pump 47 does not go to the lower region 44 whose outlet is closed by the valve 46c, but instead passes through the pipeline 46a, the bypass pipeline 36c, and the pipeline 36a. It will flow into the region 34.
- the two upper regions 34 and 35 and the second flow path 10c of the heat exchanger main body 30 are in a state where seawater is present, as in the normal use state, but on the side where the heat exchanger main body 30 is not present.
- the pressure of the seawater in the upper region 34 is higher than the pressure of the seawater in the upper region 35 on the side where the heat exchanger body 30 is in a state where the seawater naturally flows in with the inflow of seawater accompanied by pressurization by the pump 47.
- the water level of the seawater in the upper region 34 is also higher than the natural sea level WL (see FIG. 12).
- the flow of seawater through the second flow path 10c of the heat exchanger main body 30 As the flow of seawater through the second flow path 10c of the heat exchanger main body 30 is generated, it adheres to the surface of each heat exchange plate 10a forming the second flow path 10c when the heat exchange is performed.
- the dirt can be removed by removing with a water flow opposite to that during heat exchange, that is, backwashing can be performed. Since the seawater flowing into the upper region 44 through the pipe line 46a, the bypass line 36c, and the pipe line 36a is cold deep seawater, the deep seawater passes through the second flow path 10c of the heat exchanger body 30. It can pass through the surface of the heat exchanging plate 10a, and can be greatly damaged by the temperature difference in the cold deep sea water. As a state in which the organism does not continue to adhere, the organism can be reliably removed from the surface of the heat exchange plate 10a of the second flow path 10c.
- the seawater from which dirt has been removed in the second flow path 10c of the heat exchanger body 30 exits the second flow path 10c according to the flow and reaches the upper region 35. Further, the seawater passes through the inlet / outlet port 48a of the partition wall 36 to the outside sea. It flows out and spreads. On the other hand, along with the operation of the pump 47, new deep seawater enters the upper region 34 through the pipeline 46a, the bypass pipeline 36c, and the pipeline 36a, and is used for removal of dirt in the heat exchanger body 30. Thus, the above processes are repeated while continuing the backwash operation.
- the respective heat exchanges are stopped, and the upper heat exchanger main body 30 has two upper regions 34,
- the seawater is discharged from the pipe 35a through the pipe 35a so that no seawater exists in the upper regions 34 and 35.
- the seawater is discharged from the two lower regions 44, 45 through the pipes 46a, 46b, and the natural inflow of the seawater into the two lower regions 44, 45 is completely suppressed. It is assumed that no seawater exists in the lower regions 44 and 45.
- the operator enters the upper regions 34 and 35 and the lower regions 44 and 45, performs operations such as cleaning with high temperature, high-pressure water and cleaning liquid injection to the heat exchanger bodies 30 and 40, and in the upper region 35.
- Operations such as attachment / detachment and replacement of the heat exchanger body 30 with respect to the upper partition wall 32, or operations such as attachment / detachment and replacement of the heat exchanger body 40 with respect to the lower partition wall 42 in the lower region 45 are performed.
- the heat exchanger bodies 30 and 40 are attached to the upper partition wall 32 and the lower partition wall 42, and there is no pressure vessel or the like surrounding the heat exchanger bodies 30 and 40 around the heat exchanger bodies 30 and 40. Moreover, since sufficient space is secured around the heat exchanger main bodies 30 and 40, the operator can access the heat exchanger main bodies 30 and 40 very easily. Maintenance work such as inspection and cleaning can be performed reliably.
- the heat exchanger body 30 as an evaporator using surface seawater as a heat exchange fluid, and the heat as a condenser using deep seawater as a heat exchange fluid.
- the exchanger main body 40 is arranged up and down, and the seawater is circulated between the regions divided by the partition walls 32 and 42 so that the seawater is introduced into the heat exchanger main bodies 30 and 40, and the pipeline for circulating the seawater is provided. Since it is not necessary to provide a pressure vessel around the heat exchanger bodies 30 and 40, operations such as maintenance on the heat exchanger bodies 30 and 40 can be performed easily and reliably.
- the operation of the pumps 37 and 47 allows surface layer seawater to flow into the upper heat exchanger body 30 and deep seawater to flow into the lower heat exchanger body 40, respectively.
- the communication state of the pipe since the deep sea water can be flowed into the heat exchanger main body 30 in the opposite direction to the case of the surface sea water, the biological dirt is attached along with the use of the warm surface sea water.
- By flowing cold deep seawater through the heat exchanger body 30 in a state it is possible to inhibit the attachment of the organisms and appropriately remove the biological dirt, and backwashing can be performed more efficiently.
- natural water used as a heat exchange fluid is seawater, and the heat exchanger body is positioned below the sea surface to perform heat exchange.
- natural water it can be configured to use a large amount of river water, lake water, and dam reservoir water that is easy to use.
- a heat exchanger system can be constructed at low cost by arranging the heat exchanger body in a submerged state.
- the heat exchange fluid is not limited to natural water, but it is sequentially replaced in large quantities so that the effect of temperature on the whole fluid can be ignored as the temperature changes through heat exchange in the heat exchanger body. If it can be used, it can also be set as the structure which uses liquid phase media other than prepared water and water.
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Abstract
Description
壁と他の隔壁とで熱交換用流体から隔離して、熱交換用流体とは接触しない状態とすることにより、熱交換器本体の外側部分及び管路の汚損、腐食等を防止でき、耐久性の向上や保守の簡略化が図れると共に、作動流体側の管路の熱交換器本体に対する着脱等の作業を行う場合に、熱交換用流体が熱交換器本体や管路周囲に常に存在しない分、作業性に優れることとなる。
以下、本発明の第1の実施形態を図1ないし図6に基づいて説明する。本実施形態では、海洋温度差発電用蒸気動力サイクルの一構成要素となる蒸発器としての熱交換器を、温かい表層海水のある海岸部に設ける例について説明する。
本発明の第2の実施形態を図7ないし図9に基づいて説明する。
前記各図において本実施形態に係る熱交換器システムは、前記第1の実施形態同様、熱
交換器本体20と、管路21と、隔壁22と、区画壁26と、ポンプ27とを備える一方、異なる点として、前記隔壁22が一つの領域24を取囲む状態で連続した円環状形として形成され、複数の貫通孔22aが隔壁22の周方向に並べて穿設されると共に、前記熱交換器本体20が、隔壁22の外側周囲に各貫通孔22aに対応させて複数配設される構成を有するものである。
作動流体と海水との熱交換を行わせる通常使用状態では、二つの領域24、25及び各熱交換器本体20の第二流路10cには、管路26a、26bを通じた海水の自然流入に伴って海水が存在する状態となっている。この海水が自然流入した状態となっている隔壁22の外側の領域25に対し、隔壁22の内側の領域24では、海水に対しポンプ27による吸引を伴っていることで、この領域24での海水は、領域25における圧力より低い圧力となる。
本発明の第3の実施形態を図11及び図12に基づいて説明する。本実施形態では、海洋温度差発電用蒸気動力サイクルの構成要素となる蒸発器及び凝縮器としての各熱交換器を、海洋構造物に設ける例について説明する。
作動流体と海水との熱交換を行わせる通常使用状態では、二つの上部領域34、35及び熱交換器本体30の第二流路10cには、区画壁48の流入出口48aを通じた表層の海水の自然流入に伴って海水が存在する状態となっている。この海水が自然流入した状態となっている熱交換器本体30のある側の上部領域35に対し、熱交換器本体30の無い側の領域34では、海水に対しポンプ37による吸引も伴っていることで、この上部領域34での海水は、自然の海面WLより低い水位となる(図11参照)。こうして、一方の上部領域34にある海水と、他方の上部領域35にある海水との間に、ヘッド差が与えられることにより、上部領域35から、熱交換器本体30の第二流路10c、及び上部隔壁32の貫通孔32aを経て上部領域34へ向う海水の流れが生じる。
10、20 熱交換器本体
10a 熱交換用プレート
10b 第一流路
10c 第二流路
10d、10e、20d フランジ
11、21 管路
12 第一隔壁
12a、13a、22a 貫通孔
12b、13b フィルタ
13 第二隔壁
14、15、24、25 領域
14a、14b 部分領域
15a、15b 部分領域
16、26 区画壁
16a、16b 補助隔壁
16c、16d 海水出口
16e 取入れ口
17、27 ポンプ
22、28 隔壁
26a、26b 管路
28a 貫通孔
29、29b 管路
29a フランジ
30、40 熱交換器本体
30d、40d フランジ
31、41 管路
32 上部隔壁
34、35 上部領域
36、46、48 区画壁
36a、46a、46b 管路
36b、46c バルブ
36c バイパス管路
37、47 ポンプ
42 下部隔壁
44、45 下部領域
48e 流入出口
50 発電システム
51 タービン
52 発電機
53 凝縮器
54 ポンプ
WL 海面
Claims (6)
- 複数並列状態とされた略矩形状金属薄板製の各熱交換用プレートを、所定の略平行をなす二端辺部位で隣合う一の熱交換用プレートと水密状態として溶接される一方、隣合う他の熱交換用プレートと前記二端辺と略直交する他の略平行な二端辺部位で水密状態として溶接されて全て一体化され、各熱交換用プレート間に作動流体の通る第一流路と熱交換用流体の通る第二流路とをそれぞれ一つおきに生じさせる熱交換器本体と、
当該熱交換器本体の前記各第一流路に連通して前記作動流体を流入出させる管路と、
前記熱交換器本体の前記各第二流路に連通する貫通孔を穿設され、熱交換器本体における第二流路の一側の開口部分と接合して配設される隔壁とを少なくとも備え、
前記隔壁を挟んで、前記熱交換器本体の第二流路に通じる二つの領域が設定され、当該二つの領域に液相の熱交換用流体を存在させると共に、二つの領域における各熱交換用流体間にヘッド差が生じた状態として、隔壁の貫通孔及び熱交換器本体の第二流路を通る熱交換用流体の流れを生じさせ、第一流路の作動流体と第二流路の熱交換用流体との間で熱交換を行わせることを
特徴とする熱交換器システム。 - 前記請求項1に記載の熱交換器システムにおいて、
前記熱交換器本体及び隔壁が、前記隔壁を挟む二つの領域を、自然水が大量に存在する外部空間に連ねて、前記二つの領域に前記熱交換用流体として自然水が存在し、熱交換器本体の第二流路に自然水が自然流入する状態として配設され、
前記二つの領域のうち、一方の領域が前記外部空間に直接通じて自然水を外部空間と同じ状態で存在させると共に、他方の領域が大気開放状態とされ、
当該他方の領域の水位を、機械的手段による自然水の加圧又は吸引で、前記外部空間における自然水の水位と異ならせることを
特徴とする熱交換器システム。 - 前記請求項1又は2に記載の熱交換器システムにおいて、
前記隔壁を挟む二つの領域の少なくとも一方を、作業者が領域内に入って作業可能な大きさに設定し、
前記二つの領域に存在する熱交換用流体を、前記二つの領域からの機械的手段による外部への排出により、熱交換器本体より低い液位、又は各領域に存在しない状態、に調整可能とすることを
特徴とする熱交換器システム。 - 前記請求項1ないし3のいずれかに記載の熱交換器システムにおいて、
前記隔壁が一領域を取囲む状態で連続した略環状形として形成され、複数の貫通孔が隔壁の連続する周方向に並べて穿設されてなり、
前記熱交換器本体が、隔壁の外周側又は内周側に、隔壁の各貫通孔に対応させて複数並べて配設されることを
特徴とする熱交換器システム。 - 前記請求項1ないし4のいずれかに記載の熱交換器システムにおいて、
前記熱交換器本体が、第二流路の一側の開口部分にフランジを形成され、当該フランジを前記隔壁の貫通孔周囲部分に水密状態として着脱可能に取付けられ、
前記作動流体を流入出させる管路が、前記熱交換器本体から隔壁に向う形状とされると共に、隔壁に水密状態として着脱可能に取付けられるフランジを形成されてなり、
前記隔壁が、前記管路のフランジを連結する部分に、作動流体を通す他の貫通孔を穿設されると共に、管路のフランジを連結する側とは反対側の面に、前記他の貫通孔及び管路に連通する作動流体流通用の他の管路を水密状態として接続配設されてなることを
特徴とする熱交換器システム。 - 前記請求項1ないし5のいずれかに記載の熱交換器システムにおいて、
前記熱交換器本体の前記各第二流路に連通する貫通孔を穿設され、熱交換器本体における第二流路の他方の開口部分に接合して配設される他の隔壁を備えることを
特徴とする熱交換器システム。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2010/062530 WO2012014269A1 (ja) | 2010-07-26 | 2010-07-26 | 熱交換器システム |
| JP2012526203A JP5476475B2 (ja) | 2010-07-26 | 2010-07-26 | 熱交換器システム |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2010/062530 WO2012014269A1 (ja) | 2010-07-26 | 2010-07-26 | 熱交換器システム |
Publications (1)
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| WO2012014269A1 true WO2012014269A1 (ja) | 2012-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/JP2010/062530 Ceased WO2012014269A1 (ja) | 2010-07-26 | 2010-07-26 | 熱交換器システム |
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| JP (1) | JP5476475B2 (ja) |
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| CN104583707A (zh) * | 2012-05-24 | 2015-04-29 | 法雷奥热系统公司 | 具有加强的集管器的热交换器 |
| CN112636218A (zh) * | 2020-09-09 | 2021-04-09 | 北京潞电电气设备有限公司 | 一种适用于低温环境的自循环式电力箱及其控制方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104583707A (zh) * | 2012-05-24 | 2015-04-29 | 法雷奥热系统公司 | 具有加强的集管器的热交换器 |
| CN104583707B (zh) * | 2012-05-24 | 2017-02-22 | 法雷奥热系统公司 | 具有加强的集管器的热交换器 |
| CN112636218A (zh) * | 2020-09-09 | 2021-04-09 | 北京潞电电气设备有限公司 | 一种适用于低温环境的自循环式电力箱及其控制方法 |
| CN112636218B (zh) * | 2020-09-09 | 2023-05-02 | 北京潞电电气设备有限公司 | 一种适用于低温环境的自循环式电力箱及其控制方法 |
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| JPWO2012014269A1 (ja) | 2013-09-09 |
| JP5476475B2 (ja) | 2014-04-23 |
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