CN201433829Y - U-shaped channel cavity heat absorber for solar Stirling engine - Google Patents
U-shaped channel cavity heat absorber for solar Stirling engine Download PDFInfo
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- CN201433829Y CN201433829Y CN2009201085340U CN200920108534U CN201433829Y CN 201433829 Y CN201433829 Y CN 201433829Y CN 2009201085340 U CN2009201085340 U CN 2009201085340U CN 200920108534 U CN200920108534 U CN 200920108534U CN 201433829 Y CN201433829 Y CN 201433829Y
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- heat absorber
- top cover
- cylindrical cavity
- stirling engine
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- 239000006096 absorbing agent Substances 0.000 title claims abstract description 68
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000004321 preservation Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 16
- 239000001307 helium Substances 0.000 description 14
- 229910052734 helium Inorganic materials 0.000 description 14
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 14
- 239000010410 layer Substances 0.000 description 10
- 206010022000 influenza Diseases 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 239000010425 asbestos Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000000411 inducer Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
本实用新型涉及一种太阳能斯特林发动机用的吸热器，包括吸热器底板、圆柱腔体、下层顶盖、中层顶盖、上层顶盖、入口段、出口端、入口盖、保温材料层和吸热器外壳。工作时，圆柱腔体的内表面和下层顶盖的下表面受到光照，从而加热内部流动的气体。圆柱腔体中开有U形加热通道，加长了气体的受热路径。下层顶盖和中层顶盖起到把进出吸热器的气体分开的作用。该吸热器的加热气道设计的很薄，有利于使气体在流动过程中受热完全。直接受光照加热的吸热器部分在几何结构上呈周向完全对称，有利于减小吸热器内部温度场的不均匀性，从而延长使用寿命。
The utility model relates to a heat absorber for a solar Stirling engine, comprising a heat absorber bottom plate, a cylindrical cavity, a lower roof, a middle roof, an upper roof, an inlet section, an outlet end, an inlet cover, and heat preservation materials layer and heat sink shell. When working, the inner surface of the cylindrical cavity and the lower surface of the lower top cover are illuminated, thereby heating the gas flowing inside. There is a U-shaped heating channel in the cylindrical cavity, which lengthens the heating path of the gas. The lower roof and the middle roof separate the gas entering and leaving the heat absorber. The heating air channel of the heat absorber is designed to be very thin, which is conducive to completely heating the gas during the flow process. The part of the heat absorber that is directly heated by light is completely symmetrical in the circumferential direction in terms of geometric structure, which is beneficial to reducing the inhomogeneity of the internal temperature field of the heat absorber, thereby prolonging the service life.
Description
Technical field
The utility model is the U-shaped passage cavity type heat absorber that a kind of solar energy Stirling engine is used.
Background technique
Dish formula light collection solar generation technology belongs to solar energy high temperature heat utilization field, is a kind of advanced technology of utilizing solar energy to carry out the heat generating.So this technology is owing to adopt Stirling engine to be called the generating of Stirling solar heat again as dynamic power machine; it has the photo-thermal conversion efficiency height; use flexibly; advantages such as monomer can independently generate electricity; the potentiality that also have the scale generating; as document [1] Wang Yinan. to some views of China's development solar energy thermal-power-generating. energy source in China, 2006,28 (08): 5-10.
Solar heat absorber plays focused solar is transported to Stirling-electric hybrid inside as one of critical component of solar energy Stirling engine, and then the important function of Heating Cyclic working medium.The solar energy Stirling engine of a function admirable, its heat absorber should have efficiency of thermal transfer height under high-temperature work environment, circumferential uniform distribution of temperature field, and outlet working medium temperature is higher, can bear higher power pressure, and working life is than characteristics such as length.The quality of solar heat absorber performance is one of key factor that determines a solar energy Stirling engine service behaviour quality.Therefore, how to design a heat absorber, make it on the basis that utilizes focused solar to greatest extent, can reach above-mentioned requirements as much as possible,, have crucial meaning for the development of solar energy Stirling engine.
The model utility content
The purpose of this utility model is to provide a kind of solar energy Stirling engine U-shaped passage cavity type heat absorber, this U-shaped passage heating arrangement is applicable to the heat absorber of solar energy Stirling engine, when under high temperature condition, working, it is more even to have circumferential temperature field, the sender property outlet temperature is higher, can bear bigger advantages such as power pressure.
For achieving the above object, the solar energy Stirling engine that the utility model provides U-shaped passage cavity type heat absorber, its body mainly is made up of cylindrical cavity, heat absorber base plate, lower floor's top cover, middle level top cover and upper strata top cover, wherein:
One cylindrical cavity has several air flues in the wall in this cylindrical cavity cross section, these air flues only thick 2mm on perpendicular to the direction of gas flow.Be equipped with a spacer ribs in per two air flue interpositions, the height of this spacer ribs will be divided into one group of U-shaped passage less than the length of air flue between two air flues, and a suction port and an air outlet are arranged at the bottom of every group of U type passage;
The upper end of this cylindrical cavity and heat absorber base plate are connected and fixed;
One lower floor's top cover, it simultaneously is the plane, another side is provided with the bleed conduit of several spills of being extended to the center by the edge, and the edge of lower floor's top cover has several ventilating holes, and the position and the quantity of the inlet, outlet of U-shaped passage are corresponding on the position of this ventilating hole and quantity and the cavity;
Described ventilating hole compartment of terrain is suction port and air outlet, and wherein, each suction port of lower floor's top cover is corresponding to the suction port of one group of U type channel bottom, and each air outlet of lower floor's top cover is corresponding to the air outlet of one group of U type channel bottom;
The plane of the lower end of this cylindrical cavity and lower floor's top cover relatively is connected and fixed;
One middle level top cover, it simultaneously is the plane, another side is provided with several by the bleed conduit of edge to the spill of center extension, reaches the border circular areas that gas compiles, and has circular hole in the centre of border circular areas, is connected and fixed an entrance; Edge at each bleed conduit respectively has a ventilating hole;
The one side that the plane of this middle level top cover and lower floor's top cover have spill bleed conduit relatively is connected and fixed, and each ventilating hole of middle level top cover is corresponding with the air outlet of lower floor top cover respectively to link to each other, and is formed with air flue between this middle level top cover and the lower floor's top cover;
One upper strata top cover, the one side that is provided with the bleed conduit of several spills with the middle level top cover relatively is connected and fixed, and is formed with air flue between this upper strata top cover and the middle level top cover; By being formed with between lower floor's top cover, middle level top cover and the upper strata top cover entering and flowing out the two-layer air flue that the gas of cylindrical cavity separates;
The neutral position of this upper strata top cover offers round mouth, connects an outlet end, and this outlet end is enclosed within the outside of entrance, and outlet end is connected on the end face of upper strata top cover.
Solar energy Stirling engine of the present utility model is used in the U-shaped passage cavity type heat absorber, several air flues in the wall in cylindrical cavity cross section, and the spacer ribs in per two air flue neutral positions is equidistant arrangement.
Solar energy Stirling engine of the present utility model is with in the U-shaped passage cavity type heat absorber, and the heat absorber body is fixed in the shell, and the heat absorber base plate is connected by bolt with shell, fill insulant material between this shell and the heat absorber body.Shell is that two parts symmetrical interlocks and forms, and is connected and fixed by bolt between two-part to be one.
Effect of the present utility model is:
Heat absorber of the present utility model perpendicular to gas flow direction air flue design for uniform section, this design makes gas can flow steadily as far as possible in heating process, reduces because the pressure loss that the contraction of cross section of fluid channel and expansion bring.Utilizing focused solar to heat in the process of helium or air, what its inner U-shaped passage had extended gas effectively is subjected to hot path.Add the heat insulation effect that thermal insulating material is good, can make exit gas under the less situation of the pressure loss, be heated to higher temperature.Simultaneously, because each layer Gu Bi of heat absorber body all adopts the stainless steel design of 2mm wall thickness, therefore having guaranteed to have under the high temperature condition on the basis of stronger bearing capacity, also have very little thermal resistance, thereby make that the circumferential temperature field of this heat absorber is more even.
Description of drawings
Fig. 1 a is the three-dimensional cutaway view of the utility model heat absorber, and Fig. 1 b is a part enlarged view among Fig. 1 a.
Fig. 2 a is the schematic perspective view of the cylindrical cavity of the utility model heat absorber, and wherein Fig. 2 b is the b part enlarged view among Fig. 2 a.
Fig. 3 a is the schematic perspective view of lower floor's top cover of the utility model heat absorber, and wherein Fig. 3 b is the c part enlarged view among Fig. 3 a.
Fig. 4 a is the schematic perspective view of the middle level top cover of the utility model heat absorber, and wherein Fig. 4 b is the enlarged view of d part among Fig. 4 a.
Fig. 5 is the utility model heat absorber installation generalized section in the enclosure.
Main sign explanation in the accompanying drawing
1 heat absorber base plate; 2 cylindrical cavities; 3 lower floor's top covers; 4 middle level top covers; 5 upper strata top covers; 6 entrances; 7 outlet end; 8 inlet cover; 9 thermal insulating materials; 10 heat absorber shells.
Embodiment
This solar energy Stirling engine is made up of heat absorber body, adiabator layer and heat absorber shell three big parts with U-shaped passage cavity type heat absorber.And wherein the heat absorber body portion of core is welded successively by heat absorber base plate, cylindrical cavity, lower floor's top cover, middle level top cover, upper strata top cover, entrance, outlet end and inlet cover.The base plate of heat absorber body is connected with bolt with shell, thereby the heat absorber body is supported and fixed on the shell.Be to have certain thickness adiabator layer between the two.
The heat absorber body portion comprises heat absorber base plate, cylindrical cavity, lower floor's top cover, middle level top cover, upper strata top cover, entrance, outlet end and eight parts of inlet cover, all adopt high-temperature alloy steel 1Cr18Ni9Ti processing, adopt seamless welding technique to be welded successively.
The heat absorber base plate is the ring baffle that has 10 tapped holes, thick 2mm, and middle perforate makes sunlight go into to shine.This heat absorber base plate is connected on the heat absorber shell by bolt.
One end of the non-turnover gas of cylindrical cavity is welded on the heat absorber base plate, and inner fluting forms 10 groups of identical U-shaped air flues at the circumferential position of being close to inwall, thus the gas that extended effectively be subjected to hot path.Air flue and individual layer Gu Bi thickness radially are 2mm.The internal diameter of cavity is on deciding into the size of the optically focused spot that shines.Each U-shaped heating air flue can be divided into two, and wherein one is gas-entered passageway, and another is then as outlet passageway.
Lower floor's top cover is divided into two-layer, the top cover that its underclad portion flashes back the sunlight as this heat absorber cavity and be welded direct to the top of cylindrical cavity; Its top section has the bleed conduit, and have an effect of branch gas: the gas of coming in disperses to flow into the suction port of the U-shaped passage of cylindrical cavity along the gas-entered passageway at conduit edge, and the gas that from the U-shaped passage is heated after, comes out by 10 outlet passageways at edge directly towards the middle level top cover.
The middle level top cover directly be welded on lower floor's top cover above.The middle level top cover has two-layer, and its underclad portion directly is welded on the upper surface of lower floor's top cover; Its top section has the conduit that compiles from lower floor's top cover eluting gas, and the edge section of its conduit has long and narrow suction port.
The upper strata top cover is welded on the top cover of middle level, and has formed two-layer air flue with middle level top cover, lower floor's top cover, the gas that enters and flow out this heat absorber separately.
Entrance just passes the round mouth in the middle of the upper strata top cover, directly is welded on the periphery of suction port of middle level top cover.Outlet end is welded on the top cover of upper strata, has formed annular outlet passageway with inducer, and the gas after will heating is drawn from vertical direction.Inlet cover is welded direct on the mutually concordant end face of entrance and outlet end.
Adiabator layer adopts the import asbestos, and high-temperature resistant is at 1300 ℃, insulation bed thickness 50mm.
The heat absorber shell adopts structural steel to make, and is buckled together by two parts symmetrical, and contacted installation limit connects with bolt.
Below in conjunction with accompanying drawing the utility model is further described:
As shown in Figure 1a, heat absorber body portion of the present utility model is welded from top to bottom successively by heat absorber base plate 1, cylindrical cavity 2, lower floor's top cover 3, middle level top cover 4, upper strata top cover 5, entrance 6, outlet end 7 and inlet cover 8 these eight parts, and these parts all process with high-temperature alloy steel 1Cr18Ni9Ti.
The internal surface of the cylindrical cavity 2 shown in Fig. 2 a is by solar radiation, its inside is processed to the helium passages (per two adjacent long ribs 22 and a short rib 23 therebetween and the air flue 24 that forms between them constitute one group of U-shaped gas channel) of 10 groups of U-shapeds, these helium passages are sandwich-types, and its air flue thickness radially is 2mm.By Fig. 2 b as can be seen, two ventilating holes are arranged at the bottom of every group of U type passage, and one of them is a suction port 25, and another is air outlet 26, and then 10 groups of U-shaped passages have 10 suction ports 25 and 10 air outlets 26.As shown in Fig. 2 a, in every group of U-shaped passage, the pass by heating distance of a U-shaped of helium.
Lower floor's top cover 3, middle level top cover 4 and upper strata top cover 5 constitute the complete top cover of heat absorber, shown in Fig. 1 b, constituting two interlayer air flues between its adjacent lower floor's top cover 3, middle level top cover 4 and the upper strata top cover 5, is respectively that helium enters cylindrical cavity air flue 11 and outflow cylindrical cavity air flue 12 afterwards before.Shown in Fig. 3 a, the upper surface of lower floor's top cover 3 is processed with border circular areas and 10 bleed conduits 11 of dented 2mm, have the ventilating hole of 20 thin-and-longs near the edge of lower floor's top cover 3,10 thin-and-long ventilating holes wherein opening on 10 bleed conduits 11 are the suction port 32 that helium flows into cylindrical cavity 2, and remaining 10 air outlets 33 (seeing also shown in Fig. 3 b) that are helium from cylindrical cavity 2 outflows that separated by bleed conduit 11.These 10 suction ports 32 are distinguished corresponding are connected with 10 suction ports 25 of cylindrical cavity 2 bottoms with 10 air outlets 26 with 10 air outlets 33, and the lower surface of lower floor's top cover 3 (promptly offering the back side of bleed conduit one side) is welded on the Gu Bi of cylindrical cavity 2 bottoms.From Fig. 1 a as can be seen, the helium that is flowed in the heater by inducer 6 directly arrives lower floor's top cover 3 middle recessed border circular areas, can be split into 10 strands by bleed conduit 11 then, via corresponding 10 suction ports 32 of its edge, flow to 10 suction ports 25 of 10 groups of U-shaped passages in the cylindrical cavity 2.
Shown in Fig. 4 a, the upper surface of middle level top cover 4 has 10 the bleed conduits 12 of dented 2mm and the border circular areas 42 that they compile, the centre of border circular areas 42 has circular hole 43, the internal diameter of the diameter of this circular hole 43 and entrance 6 is identical, and entrance 6 is welded on this circular hole 43 Gu Bi on every side.By among Fig. 4 b as can be seen, the edge of every bleed conduit 12 of middle level top cover 4 has the ventilating hole of thin-and-long, is the air outlet 44 of this layer top cover 4,10 altogether, they are corresponding respectively continuous with 10 air outlets 33 of lower floor top cover 3.After helium is flowed out by cylindrical cavity 2, through the air outlet 33 of lower floor's top cover 3 and the air outlet 44 of middle level top cover 4, border circular areas 42 in the middle of the remittance middle level top cover 4, the flow direction is by the pipeline outer wall of entrance 6 and the formed annular gap air flue of inner-walls of duct (seeing also Fig. 1 b) of outlet end 7, and helium flows out heater by the straight tube on outlet end 7 right sides then.
As shown in Figure 5, heat absorber body and shell 10 are bolted together by heat absorber base plate 1, are filled with import asbestos thermal insulating material 9 therebetween.
During the utility model work, solar irradiation after the focusing is mapped to the internal surface of cylindrical cavity 2 and the lower surface of upper strata top cover 3, the working medium helium of Stirling engine enters the heat absorber body by entrance 6, after the border circular areas in the middle of the arrival lower floor top cover 3, shunting enters interlayer air flue 11, and then by ventilating hole 32, the U-shaped heat tunnel that enters cylindrical cavity 2 through suction port 25 continues to be heated.When helium when flow out the air outlet 26 of the U-shaped heat tunnel of cylindrical cavity 2, air outlet 44 via the ventilating hole 33 and the middle level top cover 4 of lower floor's top cover 3, border circular areas 42 in the middle of the remittance middle level top cover 4, flow to afterwards by the pipeline outer wall of entrance 6 and the formed annular gap passage of inner-walls of duct of outlet end 7, last helium flows out heater by the straight pipeline on outlet end 7 right sides, finishes the whole heating process of helium.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201085340U CN201433829Y (en) | 2009-05-27 | 2009-05-27 | U-shaped channel cavity heat absorber for solar Stirling engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201085340U CN201433829Y (en) | 2009-05-27 | 2009-05-27 | U-shaped channel cavity heat absorber for solar Stirling engine |
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| Publication Number | Publication Date |
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| CN201433829Y true CN201433829Y (en) | 2010-03-31 |
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| CN2009201085340U Expired - Lifetime CN201433829Y (en) | 2009-05-27 | 2009-05-27 | U-shaped channel cavity heat absorber for solar Stirling engine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013017721A1 (en) | 2011-08-01 | 2013-02-07 | Galdon Cabrera Carlos | Solar radiation receiver |
| CN106966065A (en) * | 2017-05-29 | 2017-07-21 | 福州维金斯农业科技有限公司 | A kind of lichee controlled atmosphere is multiplexed antistaling box |
-
2009
- 2009-05-27 CN CN2009201085340U patent/CN201433829Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013017721A1 (en) | 2011-08-01 | 2013-02-07 | Galdon Cabrera Carlos | Solar radiation receiver |
| CN103842739A (en) * | 2011-08-01 | 2014-06-04 | 卡洛斯·加尔东卡布雷拉 | Solar radiation receiver |
| CN103842739B (en) * | 2011-08-01 | 2016-08-17 | 卡洛斯·加尔东卡布雷拉 | Solar radiation receiver |
| RU2605867C2 (en) * | 2011-08-01 | 2016-12-27 | КАБРЕРА Карлос ГАЛЬДОН | Solar radiation receiver |
| CN106966065A (en) * | 2017-05-29 | 2017-07-21 | 福州维金斯农业科技有限公司 | A kind of lichee controlled atmosphere is multiplexed antistaling box |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100331 |