CN102278828B - High-temperature air and molten salt composite heat absorber - Google Patents
High-temperature air and molten salt composite heat absorber Download PDFInfo
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- CN102278828B CN102278828B CN2011101393292A CN201110139329A CN102278828B CN 102278828 B CN102278828 B CN 102278828B CN 2011101393292 A CN2011101393292 A CN 2011101393292A CN 201110139329 A CN201110139329 A CN 201110139329A CN 102278828 B CN102278828 B CN 102278828B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/80—Solar heat collectors using working fluids comprising porous material or permeable masses directly contacting the working fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/90—Solar heat collectors using working fluids using internal thermosiphonic circulation
- F24S10/95—Solar heat collectors using working fluids using internal thermosiphonic circulation having evaporator sections and condenser sections, e.g. heat pipes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/20—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S80/20—Working fluids specially adapted for solar heat collectors
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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
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
- F28D2020/0047—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material using molten salts or liquid metals
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- 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
- Y02E10/44—Heat exchange systems
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a high-temperature air and molten salt composite heat absorber comprising a porous-structure heat absorber (1), a heat exchange cavity (8), a heat pipe (7) and a molten salt heat absorption pipe (2), wherein the porous-structure heat absorber (1) is arranged at a daylight opening of the high-temperature air and molten salt composite heat absorber (13); the molten salt heat absorption pipe (2) and the heat pipe (7) are respectively located in upper and lower cavities of the heat exchange cavity (8); one end of the heat pipe (7) is located in the lower cavity of the heat exchange cavity (8); the other end of the heat pipe (7) is inserted in an inner pipe of the molten salt heat absorption pipe (2); and the end of the heat pipe (7), located in the inner pipe of the molten salt heat absorption pipe (2), is provided with fins. In the invention, the molten salt heat absorption pipe (2) adopts a sleeve structure; molten salt circulates in the inner pipe and high-temperature air circulates in an interlayer (9) between inner and outer pipelines; the heat exchange cavity (8) and the interlayer (9) between inner and outer pipelines are communicated by utilizing a fan duct (5); and the make-break is controlled by a heat tracing valve (6).
Description
Technical field
The present invention relates to a kind of high temperature heat absorber of used in solar tower-type thermal power station, particularly relate to a kind of high temperature air and molten salt composite heat absorber.
Background technology
In existing all kinds of tower type solar energy thermal power generation experimental power stations, heliostat system and electricity generation system are all basic identical, different just heat absorption and thermal energy transfer system.In all kinds of heat absorptions and thermal energy transfer system, tool some commercial potential and to study at most be salt melting system, air system and saturated vapor system.With the working medium of fused salt as heat dump, system can move by normal pressure, and security improves; Without phase transformation, and the fused salt thermal capacitance is large in whole heat absorption, heat transfer cycle for heat-transfer working medium, and system is easy to realize large capacity accumulation of heat, can realize continuously, stable electric generation.European patent EP 1873397 and US Patent No. 6701711 have all been mentioned the high-temperature molten salt heat dump, what this high-temperature molten salt heat dump adopted is the tube-sheet type structure, directly beat on the absorber plate that is formed by stainless steel pipes through the hot spot behind the heliostat field optically focused, carry out heat convection with the interior fused salt that flows of pipe after pipe temperature raises, heat fused salt by such mode.The operating temperature of fused salt outlet can up to 500 ℃-690 ℃, can improve generating efficiency effectively according to the difference of its composition.The U.S. early Solar two power station and the Solar Tres power station of building also all used the high-temperature molten salt heat dump, but be that the tube-sheet type fused salt heat dump that uses in disclosed patent or the power station all exists two problems.The first, the fusing point of fused salt is higher, and the frozen block problem occurs easily, so heat dump and fused salt pipeline all need to use electric tracing, can expend a large amount of electric energy like this, can not be ignored; The second, the energy-flux density inequality of the hot spot on heat dump surface can cause the thermal stress of fused salt pipeline to increase, and forms potential safety hazard.
Summary of the invention
The objective of the invention is to overcome the large problem with needing electric tracing, consume electric power of prior art fused salt heat dump pipeline thermal stress, propose a kind of high temperature heat absorber that adopts air and fused salt complex method to make up.
Heat dump of the present invention mainly comprises loose structure absorber, heat exchanging chamber, fused salt pipeline and companion's thermal valve.Wherein, the loose structure absorber is foamed ceramics, foam metal or ceramic honey comb etc.Heat dump overall structure of the present invention is cavate, and the loose structure absorber is installed in heat dump aperture place, and heat dump is all the other each face closures except aperture.The loose structure absorber is octagon, square, regular hexagon or the shape such as circular, and the front of loose structure absorber is towards heliostat field, and the back side of loose structure absorber links together with the heat exchanging chamber that is positioned at heat dump inside.The front of heat exchanging chamber is connected with the porous absorber, and the back side is connected with Fan pipeline, all the other each face closures.Heat exchanging chamber is the place of air and fused salt heat exchanging, comprises fused salt pipeline and air flow channel in the heat exchanging chamber, for the heat dump that contains heat pipe structure, then comprises simultaneously fused salt pipeline, air flow channel and heat pipe in the heat exchanging chamber.When the fused salt pipeline taked horizontal mode to arrange, heat exchanging chamber was divided into epicoele and cavity of resorption two parts, and the fused salt pipeline is positioned at the epicoele of heat exchanging chamber, air flow channel is positioned at the cavity of resorption of heat exchanging chamber, one end of heat pipe is positioned at the fused salt pipeline, and an end is positioned at air flow channel, and the heat exchange of fused salt and air is undertaken by heat pipe; When the fused salt pipeline taked vertical mode to arrange, heat exchanging chamber was an overall structure, and except other parts of fused salt pipeline all are air flow channels, air and fused salt pipeline directly carry out heat exchange, save heat pipe structure.The fused salt pipeline adopts inside and outside two-layer sleeve structure, is in tilted layout horizontal by being not less than 15 ° of angles.Fused salt flows in the inner tube of fused salt pipeline, and the interlayer of high temperature air between inner and outer pipes flows.The inner tube of fused salt pipeline is connected with vent valve, and vent valve is in normally off usually, in case open then the gas of the inner tube of fused salt pipeline is communicated with atmosphere.Fan pipeline is connected with companion's thermal valve, and under companion's thermal valve closed condition, Fan pipeline and heat exchanging chamber are completely cut off; When companion's thermal valve was opened, heat exchanging chamber and Fan pipeline were in connected state.Space between the inner and outer tubes of Fan pipeline and fused salt pipeline is communicated with.Two air-introduced machines lay respectively at by the fused salt pipeline of cold salt cellar and hot salt cellar in the power station.In order to prevent that heat runs off, the loose structure absorber all is coated with heat-insulation layer except lighting surface and the back side.Except positive and absorber connection and back and Fan pipeline connection, all the other each several parts of heat exchanging chamber all are coated with heat-insulation layer.Fused salt pipeline and Fan pipeline outermost all are coated with heat-insulation layer.
High temperature composite heat absorber of the present invention comprise band heat pipes horizontally-arranged structure with without heat pipes vertical setting of types structure dual mode.Band heat pipes horizontally-arranged structure makes the Temperature Distribution in the fused salt pipeline be tending towards even owing to used heat pipe; Improved heat exchange efficiency without heat pipes vertical setting of types structure owing to save the heat pipe link, the structure of vertical setting of types has also been accelerated salt discharge speed simultaneously.
The present invention has following characteristics:
1, high temperature air and molten salt composite heat absorber adopt cavate.The loose structure absorber is arranged in cavity type heat absorber aperture place, and fused salt endothermic tube, heat pipe place in the heat exchanging chamber, and heat exchanging chamber can be that overall structure also can be the Split type structure that is divided into upper and lower chamber;
2, the material of loose structure absorber can be foam metal, foamed ceramics, ceramic honey comb etc.;
3, the fused salt endothermic tube adopts sleeve structure, is in tilted layout, and the angle of itself and horizontal plane is not less than 15 °.The inner tube of fused salt endothermic tube is walked fused salt, and the sleeve pipe interlayer leads to high temperature air;
4, heat pipe one end is installed in the heat exchanging chamber, and the other end inserts in the fused salt endothermic tube inner tube;
5, the fused salt endothermic tube also can adopt common individual layer pipeline configuration, i.e. light-pipe structure, and cross arrangement, integral body places in the heat exchanging chamber;
6, the fused salt pipeline of high temperature air and molten salt composite heat absorber outside in the power station, namely the fused salt pipeline of other parts adopts sleeve structure in the power station, and Fan pipeline is connected with the fused salt sleeve pipe, and hot blast is in the intrastratal flow of fused salt clamp sleeve.
The invention has the beneficial effects as follows: use the loose structure absorber as a heat dump of compound cavity type heat absorber, produce hot-air, hot-air again heating and melting salt heat dump produces high-temperature molten salt.Solved the inhomogeneous thermal stress issues that causes of the board-like heat dump surface heat flux of conventional tube; The fused salt pipeline adopts sleeve structure, and fused salt working medium flows in inner tube, and the interlayer between the inner and outer pipes is air.High temperature air can preheating and to pipeline heating, saves the electric-heating belt part, reduces the loss of electric energy, except with fused salt working medium by the heat pipe heat exchanging, can also be used to produce steam-electric power, form the double working fluid heat electricity generation system.
Description of drawings
Figure 1 shows that the side view with heat pipe horizontally-arranged pipeline configuration heat dump;
Figure 2 shows that the zoomed-in view of dotted line frame part among Fig. 1;
Figure 3 shows that the top view with heat pipe horizontally-arranged pipeline configuration heat dump;
Figure 4 shows that the side view without heat pipe vertical setting of types pipeline configuration heat dump;
Figure 5 shows that the top view without heat pipe vertical setting of types pipeline configuration heat dump;
Figure 6 shows that heat dump is at the installation diagram of solar tower;
Figure 7 shows that the schematic diagram in high-temperature molten salt power station;
Figure 8 shows that the flow chart of the preheating of fused salt power station and work;
Among the figure: 1 loose structure absorber; 2 fused salt endothermic tubes; 3 heat-insulation layers; 4 vent valves; 5 Fan pipelines; 6 companion's thermal valves; 7 heat pipes; 8 heat exchanging chambers; The interlayer of 9 inside and outside pipelines; 10 fins; 11 fused salt pipelines; 12 headers; 13 high temperature airs and molten salt composite heat absorber; 14 solar towers; 15 air-introduced machines; 16 cold salt cellars; 17 hot salt cellars; 18 steam turbine generators; 19 heliostat fields.
The specific embodiment
Further specify the present invention below in conjunction with accompanying drawing and the specific embodiment:
The embodiment of the invention one is high temperature air and molten salt composite heat absorber with heat pipe horizontally-arranged pipeline configuration.
Figure 1 shows that the embodiment of the invention 1: with the side view of heat pipe horizontally-arranged pipeline configuration heat dump.Loose structure absorber 1 is installed in the aperture place of heat dump, and except towards the one side of heliostat field 19 and towards the one side of heat exchanging chamber 8, each face of all the other of heat dump all is coated with heat-insulation layer 3.8 minutes epicoeles of heat exchanging chamber and cavity of resorption two parts.The evaporator section of heat pipe 7 inserts the cavity of resorption of heat exchanging chamber 8, and fused salt endothermic tube 2 is installed in the epicoele of heat exchanging chamber 8.The back of the cavity of resorption of heat exchanging chamber 8 is connected with Fan pipeline 5.It is outer near on the Fan pipeline 5 of heat exchanging chamber 8 that companion's thermal valve 6 is installed in heat exchanging chamber 8.The break-make of companion's thermal valve 6 control Fan pipelines 5, when companion's thermal valve 6 was in opening state, the cavity of resorption of heat exchanging chamber 8 and Fan pipeline 5 were in connected state; When companion's thermal valve 6 was in closed condition, the cavity of resorption of heat exchanging chamber 8 and Fan pipeline 5 were in state of isolation.Heat exchanging chamber 8 except with part that loose structure absorber 1 and Fan pipeline 5 are connected, all be coated with heat-insulation layer 3.
Figure 2 shows that the zoomed-in view of dotted line frame part among Fig. 1.One end of heat pipe 7 is positioned at the cavity of resorption of heat exchanging chamber 8, and an other end inserts in the inner tube of fused salt endothermic tube 2.Heat pipe 7 is arranged in the part of fused salt endothermic tube 2 inner tubes with fin 10.Fused salt endothermic tube 2 adopts sleeve structure, inner tube circulation fused salt, interlayer 9 ventilating airs of inside and outside pipeline.Vent valve 4 links to each other with the inner tube of fused salt endothermic tube 2, is at ordinary times normally off.After vent valve 4 is opened, the inner tube of fused salt endothermic tube 2 will be connected with atmosphere.
Figure 3 shows that the top view with heat pipe horizontally-arranged pipeline configuration heat dump.Fused salt endothermic tube 2 is S shape, has between fused salt endothermic tube 2 and the horizontal plane to be not less than 15 ° inclination angle.Low-temperature molten salt enters from an end of the inner tube of fused salt endothermic tube 2, through with the heat exchange of heat pipe 7, high-temperature molten salt flows out from an other end of inner tube.Be inserted with many heat pipes 7 in the inner tube of fused salt endothermic tube 2.The one side of the cavity of resorption of heat exchanging chamber 8 is connected with the back side of loose structure absorber 1, and one side relative with loose structure absorber 1 back side in the cavity of resorption is connected with an end of two Fan pipelines 5, and its break-make is by 6 controls of companion's thermal valve.An other end of Fan pipeline 5 is connected with the inside and outside pipe sandwich 9 of exit portion with the inside and outside pipe sandwich 9 of the intake section of fused salt endothermic tube 2 respectively.
The embodiment of the invention two is high temperature air and the molten salt composite heat absorber without heat pipes vertical setting of types structure.
Figure 4 shows that the side view without heat pipes vertical setting of types structure heat dump.Loose structure absorber 1 is installed in the aperture place of heat dump, and except towards the one side of heliostat field 19 and towards the one side of heat exchanging chamber 8, other each faces all are coated with heat-insulation layer 3.Be placed with the fused salt endothermic tube 2 of vertical setting of types in the heat exchanging chamber 8, the part that fused salt endothermic tube 2 is positioned at heat exchanging chamber 8 adopts single tube structure, and the fused salt endothermic tube 2 of vertical setting of types all is connected with header 12 with exit portion at entrance in the heat exchanging chamber 8.As shown in Figure 4, the fused salt endothermic tube 2 in heat exchanging chamber 8 adopts the single tube structure, and the fused salt pipeline 11 of heat dump outside all adopts sleeve structure.Heat exchanging chamber 8 backs are connected with Fan pipeline 5, the break-make of companion's thermal valve 6 control Fan pipelines 5.
Figure 5 shows that the top view without heat pipes vertical setting of types structure heat dump.Heat exchanging chamber 8 is places of air and 2 heat exchange of fused salt endothermic tube, and many vertical setting of types fused salt endothermic tubes 2 are arranged in the heat exchanging chamber 8, is divided into n row, adopts staggered mode to arrange.In the heat exchanging chamber 8 the fused salt endothermic tube 2 of vertical setting of types at the heat dump top and the bottom converge at respectively in the horizontal header 12, and finally transmitted by the 11 pairs of fused salts of fused salt pipeline that adopt sleeve structure.Heat exchanging chamber 8 backs are connected with Fan pipeline 5, the break-make of companion's thermal valve 6 control Fan pipelines 5.An other end of Fan pipeline 5 is connected with the interlayer 9 of the inside and outside pipeline of the fused salt pipeline 11 of introducing and drawing respectively.
Figure 6 shows that high temperature air and molten salt composite heat absorber 13 are at the installation site of solar tower 14 figure.High temperature air and molten salt composite heat absorber 13 are positioned at the top of solar tower 14, and loose structure absorber 1 is positioned at the aperture of heat dump.Loose structure absorber 1 can be made as the shapes such as octagon, square, regular hexagon, circle, and take just hexagonal as example, the front of loose structure absorber 1 is towards heliostat field 19 among the figure, and reverse side and heat exchanging chamber 8 link together.
Figure 7 shows that the schematic diagram in high-temperature molten salt power station.To high temperature air and molten salt composite heat absorber 13, high temperature air and molten salt composite heat absorber 13 are positioned at the top of solar tower 14 to heliostat field 19 with the solar energy reflection behind the optically focused.Air-introduced machine 15 has two, lays respectively at fused salt pipeline 11 places of hot salt cellar 17 and cold salt cellar 16.High-temperature molten salt enters steam turbine generator 18 generation steam and generates electricity.
Figure 8 shows that the flow chart of the preheating of fused salt power station and work.As shown in Figure 8, the course of work of the present invention is as follows:
Embodiment one: with high temperature air and the molten salt composite heat absorber of heat pipe horizontally-arranged pipeline configuration.
In the preheating situation, control system makes the part heliostat of heliostat field 19 in running order lower, solar energy forms the lower hot spot of energy-flux density after focusing on through the part heliostat, and air-introduced machine 15 starts simultaneously, the cold air loose structure absorber 1 of flowing through under the traction of air-introduced machine 15.Cold air passes through the heat exchange with loose structure absorber 1, finally enters heat exchanging chamber 8, opens companion's thermal valve 6, makes it be in opening, and hot-air enters Fan pipeline 5 by companion's thermal valve 6.Not yet have fused salt working medium to flow through in fused salt endothermic tube 2 and the fused salt pipeline 11 this moment.Thermocouple in the heat exchanging chamber 8 can feedback cavity in air temperature signal to control system, by FEEDBACK CONTROL, control system can keep the air themperatures in the heat exchanging chamber 8 to be stabilized in about 300 ℃.Meanwhile, the air of companion's heat enters the interlayer 9 of the inside and outside pipeline of fused salt endothermic tube 2 by Fan pipeline 5, and high temperature air and fused salt tube wall carry out heat exchange, and the air that turns cold can directly be discharged in the atmosphere at the salt cellar place owing to nontoxic, harmless.Along with the carrying out of heat convection, the temperature of fused salt tube wall can reach desired value by control preheating time, and desired value can determine that according to composition and the fusing point of fused salt working medium principle is as far as possible low under the noncondensing prerequisite of assurance fused salt.After the temperature of tube wall reached required value, pump for liquid salts can be opened, and low-temperature molten salt enters fused salt pipeline 11 from cold salt cellar 16, flow through high temperature air and molten salt composite heat absorber 13.The fused salt fused salt endothermic tube 2 in the heat dump heat exchanging chamber 8 of flowing through flows into hot salt cellar 17 accumulation of heats through the reinforcement heat convection with heat pipe 7, and produces steam and generate electricity in steam turbine generator 18.High temperature air through with heat pipe 7 heat exchange after temperature still higher, the high temperature air that the interlayer 9 by inside and outside pipeline flows to the salt cellar end can be assisted salt melting system to produce steam and be generated electricity.Air themperature in the heat exchanging chamber 8 needs constantly monitoring, and guarantees that by the quantity of adjusting air mass flow and heliostat air themperature is in the operating temperature range of a safety.Post sunset, heliostat can revert to original state, and pump for liquid salts quits work simultaneously, and heat dump carries out the salt discharge operation, and this moment, pipeline still needed companion's heat, so air-introduced machine 15 can not stop operating.Because also store certain heat in the loose structure absorber 1, the air of the loose structure absorber 1 of flowing through still has the temperature that is not less than the fused salt fusing point, these air that were heated still can play the effect of companion's heat.At this moment, can open vent valve 4, with fused salt endothermic tube 2 and air communication.After fused salt is got back to salt cellar, allow air-introduced machine 15 stop operating, close companion's thermal valve 6 and vent valve 4, heat dump quits work.
Embodiment two: without high temperature air and the molten salt composite heat absorber of heat pipes vertical setting of types structure
In the preheating situation, control system makes the part heliostat of heliostat field 19 in running order lower, loose structure absorber 1 absorbs the solar energy temperature and raises, air-introduced machine 15 starts simultaneously, cold air passes through the heat exchange with loose structure absorber 1, finally enter heat exchanging chamber 8, this moment, heat exchanging chamber 8 interior air had higher temperature.Then open companion's thermal valve 6, air enters Fan pipeline 5 by companion's thermal valve 6.By FEEDBACK CONTROL, keep the air themperature in the heat exchanging chamber 8 to be stabilized in about 300 ℃.Simultaneously, the air of companion's heat enters the interlayer 9 of the inside and outside pipeline of fused salt endothermic tube 2 by Fan pipeline 5, and high temperature air and fused salt tube wall carry out heat exchange, and the temperature of fused salt tube wall can reach required value by control preheating time, guarantees that fused salt frozen block can not occur.After the temperature of tube wall reached required value, pump for liquid salts can be opened, and low-temperature molten salt enters fused salt pipeline 11 from cold salt cellar 16, the high temperature heat absorber 13 of flowing through.The low-temperature molten salt fused salt endothermic tube 2 in the heat dump heat exchanging chamber 8 of flowing through, through with the direct heat convection of hot-air after obtain high-temperature molten salt.High-temperature molten salt flows into hot salt cellar 17 accumulation of heats, and produces steam and generate electricity in steam turbine generator 18, and the high temperature air that flows to the salt cellar end can be assisted salt melting system to produce steam and be generated electricity.Described with the front, the air themperature in the heat exchanging chamber 8 also needs constantly to monitor to guarantee that air themperature is in the operating temperature range of a safety.Post sunset, heliostat revert to original state, and pump for liquid salts quits work simultaneously, and heat dump carries out the salt discharge operation, and for guaranteeing pipe temperature, air-introduced machine 15 continues operation.Because adopted the mode of vertical setting of types pipeline, the more foregoing heat dump of salt discharge speed has greatly improved, and opens vent valve 4, the salt in heat dump and the pipeline can very fast emptying.After fused salt is got back to salt cellar, allow air-introduced machine 15 stop operating, close companion's thermal valve 6 and vent valve 4, heat dump quits work.
Claims (6)
1. a high temperature air and molten salt composite heat absorber, it is characterized in that: described heat dump (13) comprises loose structure absorber (1), heat exchanging chamber (8), heat pipe (7) and fused salt endothermic tube (2); Described loose structure absorber (1) is installed in the aperture place of described heat dump (13), except towards the one side of heliostat field (19) and towards the one side of heat exchanging chamber (8), other each faces of described heat dump (13) all are coated with heat-insulation layer (3); Described heat exchanging chamber (8) is installed in the back side of loose structure absorber (1); Heat pipe (7), fused salt endothermic tube (2) are installed in the heat exchanging chamber (8); One end of heat pipe (7) is positioned at the cavity of resorption of heat exchanging chamber (8), and the other end of heat pipe (7) inserts in the inner tube of fused salt endothermic tube (2); One end of two Fan pipelines (5) all is connected with the back side of heat exchanging chamber (8), the other end of Fan pipeline (5) is communicated with the interlayer (9) of the inside and outside pipeline of exit portion with the interlayer (9) of the inside and outside pipeline of the intake section of fused salt endothermic tube (2) respectively, companion's thermal valve (6) is installed on the Fan pipeline (5), the break-make of companion's thermal valve (6) control Fan pipeline (5).
2. high temperature air according to claim 1 and molten salt composite heat absorber is characterized in that described loose structure absorber (1) is foamed ceramics, foam metal or ceramic honey comb; Described loose structure absorber (1) is circular, square, hexagon or octagon.
3. high temperature air according to claim 1 and molten salt composite heat absorber is characterized in that described heat exchanging chamber (8) is divided into epicoele and cavity of resorption two parts; Heat exchanging chamber (8) except with part that loose structure absorber (1) and Fan pipeline (5) are connected, all be coated with heat-insulation layer (3).
4. high temperature air according to claim 1 and molten salt composite heat absorber, it is characterized in that described heat dump takes to be with heat pipe horizontally-arranged pipeline configuration, described fused salt endothermic tube (2) adopts sleeve structure, the inner tube circulation fused salt of described fused salt endothermic tube (2), interlayer (9) the circulation high temperature air between the inside and outside pipeline of described fused salt endothermic tube (2); Described fused salt endothermic tube (2) is in tilted layout, and fused salt endothermic tube (2) is not less than 15 ° with the angle of horizontal plane.
5. high temperature air according to claim 1 and molten salt composite heat absorber, it is characterized in that the evaporator section of described heat pipe (7) is positioned at the cavity of resorption of heat exchanging chamber (8), an other end inserts in the inner tube of fused salt endothermic tube (2), and the end that heat pipe (7) is positioned at fused salt endothermic tube (2) inner tube is equipped with fin (10).
6. a high temperature air and molten salt composite heat absorber is characterized in that described heat dump adopts without heat pipe vertical setting of types pipeline configuration, comprises loose structure absorber (1), heat exchanging chamber (8) and fused salt endothermic tube (2); Described loose structure absorber (1) is installed in the aperture place of described heat dump (13), except towards the one side of heliostat field (19) and towards the one side of heat exchanging chamber (8), other each faces of described heat dump (13) all are coated with heat-insulation layer (3); Described heat exchanging chamber (8) is installed in the back side of loose structure absorber (1); Described fused salt endothermic tube (2) adopts single tube structure, cross arrangement, and integral body places in the heat exchanging chamber (8); One end of two Fan pipelines (5) all is connected with the back side of heat exchanging chamber (8), the other end of Fan pipeline (5) is communicated with the interlayer (9) of the inside and outside pipeline of exit portion with the interlayer (9) of the inside and outside pipeline of the intake section of fused salt endothermic tube (2) respectively, companion's thermal valve (6) is installed on the Fan pipeline (5), the break-make of companion's thermal valve (6) control Fan pipeline (5).
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| CN2011101393292A CN102278828B (en) | 2011-05-27 | 2011-05-27 | High-temperature air and molten salt composite heat absorber |
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| CN2011101393292A CN102278828B (en) | 2011-05-27 | 2011-05-27 | High-temperature air and molten salt composite heat absorber |
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| CN102278828B true CN102278828B (en) | 2013-02-20 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102563867B (en) * | 2012-01-17 | 2014-05-07 | 杭州锅炉集团股份有限公司 | Solar-heating assisted salt melting system |
| CN102563280A (en) * | 2012-02-29 | 2012-07-11 | 江苏太阳宝新能源有限公司 | Preheating and solidification prevention method for solar-thermal power generation molten salt energy-storage transmission pipeline |
| CN102865685B (en) * | 2012-10-07 | 2014-08-27 | 中国科学院电工研究所 | Preheating, heat-insulating and anti-freezing device for fused salt heat absorber |
| CN106091437B (en) * | 2016-07-25 | 2018-08-07 | 华电电力科学研究院 | The tracing system and heat tracing method of solar energy heat build-up power station fused salt circulating line |
| CN106152091B (en) * | 2016-09-14 | 2019-01-18 | 广东石油化工学院 | A kind of multi-functional fuse salt steam generator of fully-automatic household |
| CN110307656B (en) * | 2019-06-28 | 2020-07-14 | 浙江中控太阳能技术有限公司 | Combined type fused salt heat absorber |
| CN112930095B (en) * | 2021-03-10 | 2023-03-14 | 广州高澜创新科技有限公司 | Charging station temperature regulation and control system and regulation and control method |
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| CN1776322A (en) * | 2005-12-06 | 2006-05-24 | 北京工业大学 | Binary medium solar high temperature heat absorption/storage device |
| CN101033892A (en) * | 2007-04-16 | 2007-09-12 | 中国科学院电工研究所 | High temperature heat absorber used in solar tower-type thermal power station |
| CN201827033U (en) * | 2010-09-21 | 2011-05-11 | 广东工业大学 | Disc type solar Stirling heat and power cogeneration device |
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