CN205066203U - Heat absorption system is pressed in tower solar energy closed area - Google Patents
Heat absorption system is pressed in tower solar energy closed area Download PDFInfo
- Publication number
- CN205066203U CN205066203U CN201520755303.4U CN201520755303U CN205066203U CN 205066203 U CN205066203 U CN 205066203U CN 201520755303 U CN201520755303 U CN 201520755303U CN 205066203 U CN205066203 U CN 205066203U
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- China
- Prior art keywords
- heat
- valve
- heat exchanger
- pipeline
- pipe
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- 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.)
- Withdrawn - After Issue
Links
- 238000010521 absorption reaction Methods 0.000 title abstract description 8
- 230000008676 import Effects 0.000 claims abstract description 14
- 238000005338 heat storage Methods 0.000 claims description 31
- 230000007774 longterm Effects 0.000 abstract description 5
- 239000006096 absorbing agent Substances 0.000 abstract 6
- 239000012536 storage buffer Substances 0.000 abstract 5
- 230000004913 activation Effects 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 238000005381 potential energy Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 208000025599 Heat Stress disease Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Landscapes
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The utility model discloses a heat absorption system is pressed in tower solar energy closed area, including the heat absorber that is located a high position, the heat exchanger that is located the low level, tube coupling, its characterized in that are passed through with the import of heat exchanger to the export of heat absorber: still including the storage buffer tank that is located the low level, there is endothermic medium to add the pipe at the storage buffer tank first line of a couplet, it has intake pipe and blast pipe still to ally oneself with on the storage buffer tank that is higher than endothermic medium joining pipe, in the intake pipe, the blast pipe is added guan shangjun with the heat absorption medium and is equipped with the valve, the exit linkage of pipeline and heat exchanger is passed through to one side of storage buffer tank, the opposite side of storage buffer tank passes through the pipeline and links to each other with the circulating pump import, the circulating pump export links to each other through the import of pipeline with the heat absorber, the heat absorber passes through the pipeline and an exhaust -valve links to each other, the exhaust -valve is higher than the heat absorber, the utility model has the advantages of investment cost and running cost are low, the security is good, the heat absorber activation time is shorter to the long -term normal work of assurance system.
Description
Technical field
The utility model relates to a kind of endothermic system for tower type solar.
Background technology
Existing tower type solar heat absorption heat-exchange system, comprises and is positioned at high-order heat dump, the high temperature storage tank being positioned at low level, steam generator, superheater, low-temperature storage tank and circulating pump, and they are connected formation closed circuit successively; During work, circulating pump flows into high temperature storage tank after medium is sent into heat dump, heat absorption by cryogenic tank, and high-temperature medium goes heating water working medium again and produces superheated steam for generating, and the medium after heat release flows into low-temperature storage tank again.At present, large-scale tower photo-thermal power station heat absorption tower height degree reaches about 200 meters, heat dump is just located on heat absorption tower, and required heat transfer medium flow is very large, therefore heat transfer medium is promoted to tower top heat dump by ground to need to consume comparatively multi-energy, need large discharge, large lift, powerful pump, under the liquid of pump in addition, the degree of depth reaches more than 10 meter, thus also very high to the requirement of pump.In Practical Project, one is that choosing of pump is difficult to realize production domesticization and be forced to select expensive import pump, and pump power is large simultaneously, power consumption large, thus also considerably increases system investments and operating cost; Two is that storage tank works all at ambient pressure, provides power that heat transfer medium is delivered to tower top heat dump by pump, and after medium heat absorption in falling process not only potential energy be wasted, but also need to be equipped with decompressor in order to avoid storage tank superpressure, increase equipment cost, security is poor; Three is in system operation, due to the instability of solar irradiation, make heat dump be in irregular operation state, the Temperature of Working fluctuation entering storage tank is larger, also may there is the accidents such as heat transfer medium solidifies when occurring that illumination is not enough suddenly, being difficult to the normal work of guarantee system; Four is that what to enter into heat dump is all cryogenic fluid, causes the start-up time of heat dump longer.
Summary of the invention
The purpose of this utility model is the above-mentioned deficiency for prior art, there is provided a kind of tower type solar enclosed endothermic system with pressure, the advantage that it has cost of investment and operating cost is low, security is good, heat dump start-up time is shorter, and the normal work that the system that ensures is long-term.
In order to achieve the above object, a kind of tower type solar enclosed of the present utility model endothermic system with pressure, comprise and be positioned at high-order heat dump, be positioned at the heat exchanger of low level, the outlet of heat dump is connected by pipeline with the import of heat exchanger, it is characterized in that: also comprise the storage surge tank being positioned at low level, storage surge tank is associated with heat-absorbing medium and adds pipe, the storage surge tank adding pipe higher than heat-absorbing medium is also associated with air inlet pipe and blast pipe, in air inlet pipe, blast pipe and heat-absorbing medium add on pipe and are equipped with valve, the side storing surge tank is connected with the outlet of heat exchanger by pipeline, the opposite side storing surge tank is connected with pump inlet by pipeline, circulating-pump outlet is connected with the import of heat dump by pipeline, heat dump is connected with an exhaust-valve by pipeline, exhaust-valve is higher than heat dump,
The course of work of the present utility model is: A) close valve in air inlet pipe, open and close blast pipe and heat-absorbing medium and add valve on pipe and exhaust-valve; B) pipe is added to storing the heat-absorbing medium adding q.s in surge tank by heat-absorbing medium, close the valve on blast pipe again, open the valve in air inlet pipe, compressed gas is filled with to storage surge tank by air inlet pipe, along with the rising storing pressure in surge tank, heat-absorbing medium is by under the effect of gas pressure, overcome the effect of gravity, along the pipeline storing surge tank both sides, up flow gradually, until heat-absorbing medium is full of having living space in the following closed circuit of exhaust-valve, then close exhaust-valve; C) after heat dump outlet pressure reaches setting value, the valve in air inlet pipe is closed; D) start circulating pump, heat-absorbing medium circulates in systems in which by under the effect of circulating pump, by heat sink solar energy, then passes to heat exchanger;
The utility model is by system operation with pressure, the potential energy that heat-absorbing medium falls from tower top is used adequately reasonably, the power demand provided by circulating pump reduces greatly, only need overcome the resistance that medium circulates in the loop, not only reduce the technical requirement to circulating pump, also greatly reduce system cloud gray model power consumption, the closed stable operation in this loop simultaneously also will improve stability and the security of whole system, have cost of investment and operating cost is low, security is good advantage; In addition, heat dump startup stage, can start heat exchanger, just heat-absorbing medium circulation is heated, and can shorten heat dump start-up time like this;
Preferred as one of the present utility model, the two ends of described circulating pump are connected by bypass valve; By opening bypass valve, heat-absorbing medium can be allowed to be full of the pipeline stored between surge tank and heat dump fast;
Preferred as one of the present utility model, described heat exchanger is dividing wall type heat exchanger, the heat storage medium outlet of heat exchanger is connected with high temperature storage tank, is provided with heat storage medium circulating pump, is provided with steam generation and superheater between high temperature storage tank and low-temperature storage tank between low-temperature storage tank and heat exchanger; In step D) in, when solar irradiation is sufficient, heat storage medium circulating pump drives heat storage medium forward flow; When solar irradiation is not enough, heat storage medium circulating pump drives heat storage medium reverse flow, namely heat storage medium flows to heat exchanger by high temperature storage tank, heat storage medium is used to heat heat-absorbing medium by heat exchanger, be warming up to higher temperature, to avoid solidifying of heat-absorbing medium to cause excessive heat fatigue with heat dump cooling is too fast, ensure the normal work that system is long-term;
Preferred as one of the present utility model, described storage surge tank lower end is associated with drainage conduit, and drainage conduit is provided with blow-off valve; When after stoppage in transit circulating pump, can determine whether open blow-off valve according to power station service requirement, discharge the heat-absorbing medium stored in surge tank.
Preferred as one of the present utility model, described heat-absorbing medium adds pipe and is connected with heat storage medium circulation delivery side of pump, and drainage conduit is connected with low-temperature storage tank; When heat-absorbing medium and heat storage medium are same medium, when starting, the medium in low-temperature storage tank is filled with storage surge tank; When emptying, medium is entered low-temperature storage tank; Can simplied system structure.
In sum, the advantage that the utility model has cost of investment and operating cost is low, security is good, heat dump start-up time is shorter, and the normal work that the system that ensures is long-term.
Accompanying drawing explanation
Fig. 1 is the structure chart of the utility model embodiment one.
Fig. 2 is the structure chart of the utility model embodiment two.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Embodiment one
As shown in Figure 1, this tower type solar enclosed endothermic system with pressure, comprise and be positioned at high-order heat dump 1, be positioned at the heat exchanger 2 of low level dividing wall type, store surge tank 3 and circulating pump 4, the outlet of heat dump 1 is connected by pipeline with the import of heat exchanger 2, described storage surge tank 3 lower end is associated with drainage conduit, drainage conduit is provided with blow-off valve 5, storage surge tank 3 is associated with heat-absorbing medium and adds pipe 6, the storage surge tank 3 adding pipe 6 higher than heat-absorbing medium is also associated with air inlet pipe 7 and blast pipe 8, in air inlet pipe 7, blast pipe 8 and heat-absorbing medium add on pipe 6 and are equipped with valve 10 or valve 11 valve 9, the side storing surge tank 3 is connected by pipeline by the outlet of pipeline with heat exchanger 2, the opposite side storing surge tank 3 is connected by the import of pipeline with described circulating pump 4, the outlet of circulating pump 4 is connected with the import of heat dump 1, the two ends of circulating pump 4 are also connected by bypass valve 12, export at heat dump 1 and be provided with exhaust-valve 13 with on the pipeline that is connected of heat exchanger 2 import, exhaust-valve 13 is higher than heat dump 1, the heat storage medium import of described heat exchanger 2 is connected with low-temperature storage tank 14, the heat storage medium outlet of heat exchanger 2 is connected with high temperature storage tank 15, between low-temperature storage tank 14 and heat exchanger 2, be provided with heat storage medium circulating pump 17, between high temperature storage tank 15 and low-temperature storage tank 14, be provided with steam generation and superheater 16,
The course of work of the present utility model is: A) close valve 10 in air inlet pipe 7 and blow-off valve 5, open blast pipe 8 and heat-absorbing medium and add valve 11, valve 9, exhaust-valve 13 and bypass valve 12 on pipe 6, B) pipe 6 is added to storing the heat-absorbing medium adding q.s in surge tank 3 by heat-absorbing medium, close the valve 11 on blast pipe 8 again, open the valve 10 in air inlet pipe 7, compressed gas is filled with to storage surge tank 3 by air inlet pipe 7, along with the rising storing pressure in surge tank 3, heat-absorbing medium is by under the effect of gas pressure, overcome the effect of gravity, along the pipeline storing surge tank 3 both sides, up flow gradually, until heat-absorbing medium is full of having living space in exhaust-valve less than 13 closed circuit, close exhaust-valve 13 again, heat-absorbing medium adds valve 9 on pipe 6 and bypass valve 12, C) after heat dump 1 outlet pressure reaches setting value, the valve 10 in air inlet pipe 7 is closed, D) start circulating pump 4, wouldn't start heat storage medium circulating pump 17, heat-absorbing medium circulates in systems in which by under the effect of circulating pump 4, absorbs solar energy by heat dump 1, restart heat storage medium circulating pump 17 after a while, drive heat storage medium along low-temperature storage tank 14, heat exchanger 2, high temperature storage tank 15, steam generation and the flowing of superheater 16 forward circulation, heat-absorbing medium is by heat exchanger 2 heat storage medium, when solar irradiation is sufficient, heat storage medium keeps forward flow, when solar irradiation is not enough, heat storage medium circulating pump 17 drives heat storage medium reverse flow, namely heat storage medium flows to heat exchanger 2 by high temperature storage tank 15, heat storage medium is used to heat heat-absorbing medium by heat exchanger 2, be warming up to higher temperature, to avoid solidifying of heat-absorbing medium, ensure the normal work that system is long-term,
Heat-absorbing medium and heat storage medium can be the one in fused salt, liquid metal, water or other fluid medium, and the present embodiment is applicable to the heat-absorbing medium operating mode different with heat storage medium; The utility model makes system be in band pressure condition before running, after operation, the potential energy that heat-absorbing medium falls from tower top is used adequately reasonably, the power demand provided by circulating pump 4 reduces greatly, only need overcome the resistance that medium circulates in the loop, not only reduce the technical requirement to circulating pump 4, also greatly system cloud gray model power consumption is reduced, the closed stable operation in this loop simultaneously also will improve the stability of whole system and security, have cost of investment and operating cost is low, security is good advantage; By regulating the rotating speed of circulating pump 4 to regulate heat-absorbing medium flow in operation, thus control the medium temperature of heat dump 1 outlet; Control the flow of heat storage medium, thus control the cooled temperature of heat-absorbing medium; By the pressure in control store surge tank 3, thus control the pressure of heat dump 1 outlet.In addition, heat dump 1 startup stage, wouldn't start heat exchanger 2, just heat-absorbing medium circulation is heated, and can shorten heat dump 1 start-up time like this; Bypass valve 12 can allow heat-absorbing medium be full of fast or fall after rise; When after stoppage in transit circulating pump, blow-off valve 5 can be opened as required, discharge the heat-absorbing medium stored in surge tank 3.
Embodiment two
As shown in Figure 2, this embodiment is only with the difference of embodiment one: described heat-absorbing medium adds pipe 6 and is connected with the outlet of heat storage medium circulating pump 17, and drainage conduit is connected with low-temperature storage tank 14; The present embodiment is applicable to the operating mode that heat-absorbing medium and heat storage medium are same medium, is filled with by the medium in low-temperature storage tank 14 stores surge tank 3 when starting; When emptying, medium is entered low-temperature storage tank 14; Can simplied system structure.
Claims (5)
1. a tower type solar enclosed endothermic system with pressure, comprise and be positioned at high-order heat dump, be positioned at the heat exchanger of low level, the outlet of heat dump is connected by pipeline with the import of heat exchanger, it is characterized in that: also comprise the storage surge tank being positioned at low level, storage surge tank is associated with heat-absorbing medium and adds pipe, the storage surge tank adding pipe higher than heat-absorbing medium is also associated with air inlet pipe and blast pipe, in air inlet pipe, blast pipe and heat-absorbing medium add on pipe and are equipped with valve, the side storing surge tank is connected with the outlet of heat exchanger by pipeline, the opposite side storing surge tank is connected with pump inlet by pipeline, circulating-pump outlet is connected with the import of heat dump by pipeline, heat dump is connected with an exhaust-valve by pipeline, exhaust-valve is higher than heat dump.
2. a kind of tower type solar enclosed according to claim 1 endothermic system with pressure, is characterized in that: the two ends of described circulating pump are connected by bypass valve.
3. a kind of tower type solar enclosed according to claim 1 and 2 endothermic system with pressure, it is characterized in that: described heat exchanger is dividing wall type heat exchanger, the heat storage medium import of heat exchanger is connected with low-temperature storage tank, the heat storage medium outlet of heat exchanger is connected with high temperature storage tank, between low-temperature storage tank and heat exchanger, be provided with heat storage medium circulating pump, between high temperature storage tank and low-temperature storage tank, be provided with steam generation and superheater.
4. a kind of tower type solar enclosed according to claim 3 endothermic system with pressure, is characterized in that: described storage surge tank lower end is associated with drainage conduit, and drainage conduit is provided with blow-off valve.
5. a kind of tower type solar enclosed according to claim 4 endothermic system with pressure, is characterized in that: described heat-absorbing medium adds pipe and is connected with heat storage medium circulation delivery side of pump, and drainage conduit is connected with low-temperature storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520755303.4U CN205066203U (en) | 2015-09-28 | 2015-09-28 | Heat absorption system is pressed in tower solar energy closed area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520755303.4U CN205066203U (en) | 2015-09-28 | 2015-09-28 | Heat absorption system is pressed in tower solar energy closed area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205066203U true CN205066203U (en) | 2016-03-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520755303.4U Withdrawn - After Issue CN205066203U (en) | 2015-09-28 | 2015-09-28 | Heat absorption system is pressed in tower solar energy closed area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205066203U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180475A (en) * | 2015-09-28 | 2015-12-23 | 东方电气集团东方锅炉股份有限公司 | Tower-type solar closed under-pressure heat absorption system and method |
-
2015
- 2015-09-28 CN CN201520755303.4U patent/CN205066203U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180475A (en) * | 2015-09-28 | 2015-12-23 | 东方电气集团东方锅炉股份有限公司 | Tower-type solar closed under-pressure heat absorption system and method |
| CN105180475B (en) * | 2015-09-28 | 2017-04-26 | 东方电气集团东方锅炉股份有限公司 | Tower-type solar closed under-pressure heat absorption system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160302 Effective date of abandoning: 20170426 |