CN114811950A - Heat pump system for recovering waste heat of fuel cell power generation system - Google Patents
Heat pump system for recovering waste heat of fuel cell power generation system Download PDFInfo
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- CN114811950A CN114811950A CN202210763246.9A CN202210763246A CN114811950A CN 114811950 A CN114811950 A CN 114811950A CN 202210763246 A CN202210763246 A CN 202210763246A CN 114811950 A CN114811950 A CN 114811950A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04044—Purification of heat exchange media
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04059—Evaporative processes for the cooling of a fuel cell
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- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Sustainable Development (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Combustion & Propulsion (AREA)
- Fuel Cell (AREA)
Abstract
The invention relates to the technical field of fuel cells, and discloses a heat pump system for recovering waste heat of a fuel cell power generation system, which comprises a fuel cell stack, wherein the bottom end of the fuel cell stack is fixedly connected with a cooling mechanism, the bottom end of the side surface of the fuel cell stack is fixedly connected with a cell water outlet pipe, the bottom end of the cell water outlet pipe is fixedly connected with a heat conduction box, the side surface of the heat conduction box far away from the cooling mechanism is fixedly connected with an adjusting mechanism, and the bottom end of the heat conduction box is fixedly connected with a power mechanism. But also can recover waste heat generated in the electrolytic reaction process, and improves the comprehensive efficiency of the whole system.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a heat pump system for recovering waste heat of a fuel cell power generation system.
Background
Proton Exchange Membrane Fuel Cells (PEMFCs), also called Polymer Electrolyte Fuel Cells (PEFCs), employ an ion-conductive polymer membrane as an electrolyte, and are actually large power generation systems requiring a fuel supply system, an oxidant system, a power generation system, a water management system, a thermal management system, an electric power system, and a control system;
when the proton exchange membrane fuel cell works, hydrogen enters the fuel cell from a gas flow channel of a cell anode, one hydrogen molecule is decomposed into two hydrogen atoms under the action of a catalyst, the two hydrogen atoms are decomposed into hydrogen ions with positive charges and electrons with negative charges respectively, the hydrogen ions enter a cathode through a proton exchange membrane, the electrons are left at the anode, the electrons enter the cathode through an external circuit, and therefore electricity can be generated, the electrons entering the cathode and oxygen entering the cathode through a gas flow channel produce oxygen ions, and then the oxygen ions react with the hydrogen ions entering the cathode to generate water, and the traditional fuel cell has the following problems:
the proton exchange membrane fuel cell can generate a large amount of heat when the cathode produces water, the operating temperature of the fuel cell needs to be kept between 60 ℃ and 80 ℃, the chemical reaction rate can be slowed down when the temperature is too low, the power generation efficiency is low, irreversible damage can be caused when the proton exchange membrane is dehydrated when the temperature is too high, the temperature of the cell needs to be kept uniform, the membrane is heated unevenly when the temperature difference is too large, the service life of the cell is shortened, and a good method for ensuring the temperature stability of the fuel cell is not provided at present;
the fuel cell stack is generally cooled by liquid, common coolants comprise water, glycol and the like, the water temperature of a proton membrane exchange cell is generally lower than 65 ℃, waste heat generated in the operation process of a fixed fuel cell power generation system can be recovered by liquid-liquid exchange by using a plate heat exchanger or a plate-shell type partition wall type heat exchanger, hot water at about 65 ℃ can be replaced normally, but the hot water belongs to a low-grade low-temperature heat source, and the utilization rate of heat energy is low.
Disclosure of Invention
In order to overcome the above-mentioned defects in the prior art, the embodiments of the present invention provide a heat pump system for recovering waste heat of a fuel cell power generation system, so as to solve the technical problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a heat pump system for recovering waste heat of a fuel cell power generation system comprises a fuel cell stack, wherein a cooling mechanism is fixedly connected to the bottom end of the fuel cell stack, a cell water outlet pipe is fixedly connected to the bottom end of the side surface of the fuel cell stack, a heat conduction box is fixedly connected to the bottom end of the cell water outlet pipe, an adjusting mechanism is fixedly connected to the side surface, away from the cooling mechanism, of the heat conduction box, a power mechanism is fixedly connected to the bottom end of the heat conduction box, and the power mechanism is fixedly connected with a second type heat pump system through a circulating water outlet pipe;
the side surface of the heat transfer box is fixedly connected with a gas storage box, the side surface of the gas storage box far away from the heat transfer box is fixedly connected with a connecting sleeve, the side surface of the gas storage box and the inside of the connecting sleeve are both provided with through holes matched with a movable plunger, the movable plunger and the connecting sleeve are in a sealing state, the side surface of the connecting sleeve far away from the gas storage box is fixedly connected with a first magnetic ring, the side surface of the movable plunger is fixedly connected with a movable magnetic ring, the side surface of the movable plunger far away from the connecting sleeve is movably sleeved with a second magnetic ring, the second magnetic ring is fixedly connected with the gas storage box through a fixing plate, the contact surface magnetic poles of the first magnetic ring and the movable magnetic ring are different, the contact surface magnetic poles of the movable magnetic ring and the second magnetic ring are different, the bottom end of the movable magnetic ring is fixedly connected with a movable plate, and the bottom end of the heat transfer box is fixedly connected with a limit sealing box, and the side surface of the limiting seal box is provided with a sliding groove matched with the movable plate.
In a preferred embodiment, a through hole is formed in a side surface of the movable plate, a mounting groove adapted to the sealing block is formed in the movable plate, two through holes are formed in the bottom end of the heat transfer box, and the size of the through hole of the movable plate is the same as that of the through hole of the heat transfer box.
In a preferred embodiment, when the movable magnetic ring is in contact with the first magnetic ring, the through hole of the movable plate is coaxial with one through hole of the heat transfer box, and when the movable magnetic ring is in contact with the second magnetic ring, the through hole of the movable plate is coaxial with the other through hole of the heat transfer box.
In a preferred embodiment, a water storage tank is fixedly connected to the bottom end of the limiting seal box, a first water pipe and a second water pipe are fixedly connected to the inside of the water storage tank, the first water pipe is located on a central line of the water storage tank, the second water pipe is located on a side face, away from the cooling mechanism, of the first water pipe, a rotating plate is arranged at the bottom end of the second water pipe, and an output is fixedly connected to the inside of the rotating plate.
In a preferred embodiment, the second type of heat pump system is fixedly connected with the fuel cell stack through a return pipe, and an electric control valve is arranged on the side surface of the return pipe.
In a preferred embodiment, a water collecting plate is fixedly connected to the bottom end of the water storage tank, a conical groove is formed in the top end of the water collecting plate, and a through hole matched with the circulating water outlet pipe is formed in the center line position of the conical groove of the water collecting plate.
In a preferred embodiment, a first gear is fixedly connected to a side surface of the output, a second gear is connected to a side surface of the first gear in a transmission manner, the first gear and the second gear are meshed with each other, a rotating shaft is fixedly connected to a top end of the second gear, a heat dissipation gas outlet box is movably connected to a top end of the rotating shaft, a top end of the heat dissipation gas outlet box is fixedly connected to a bottom end of the fuel cell stack, rotating blades are fixedly connected to a side surface of the rotating shaft, and a ventilation hole is formed in a top end of a side surface of the heat dissipation gas outlet box.
The invention has the technical effects and advantages that:
1. according to the invention, the fuel cell stack and the second heat pump system are arranged, water generated from the cathode end in the fuel cell stack flows into the second heat pump system, and after the water is treated by the second heat pump system, the low-grade waste heat at about 65 ℃ can be raised in temperature, recovered and put into use again, so that the fuel cell stack can be cooled, the waste heat generated in the electrolytic reaction process can be recovered, and the comprehensive efficiency of the whole system is improved;
2. when the temperature of water discharged from the fuel cell stack is lower than 65 ℃, gas in the gas storage tank shrinks so that the movable plunger drives the first magnetic ring to move towards the interior of the gas storage tank, the first magnetic ring drives the movable plate to move, the heat conduction box is communicated with the first water pipe, the discharged water enters the second heat pump system through the first water pipe and the circulating water outlet pipe, and when the water is heated by the second heat pump system, part of the heated water flows back to the fuel cell stack through the return pipe, so that the power generation efficiency of the fuel cell stack is ensured;
3. when the temperature of water discharged from the fuel cell stack is higher than 80 ℃, gas in the gas storage tank expands to enable the movable plunger to drive the first magnetic ring to move outwards, the first magnetic ring drives the movable plate to move so as to enable the heat transfer box to be communicated with the second water pipe, the water in the heat transfer box flows out through the second water pipe, the water in the second water pipe falls onto the rotating plate, the rotating plate drives the output to rotate, the rotating shaft drives the rotating blades to rotate after the output rotation is transmitted through the first gear and the second gear, the temperature of the fuel cell stack is reduced by the gas blown out by the rotating blades, and the fuel cell stack is kept at 60-80 ℃ for reaction.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic diagram of a fuel cell stack according to the present invention.
Fig. 3 is a schematic cross-sectional view of an adjustment mechanism of the present invention.
Fig. 4 is a schematic cross-sectional view of the spacing seal box of the present invention.
Fig. 5 is a schematic cross-sectional view of the cooling mechanism and the power mechanism according to the present invention.
Fig. 6 is an exploded view of the internal structure of the mechanism and the power mechanism according to the present invention.
Fig. 7 is a schematic structural diagram of a heat pump system according to the present invention.
The reference signs are: 1. a fuel cell stack; 2. a heat transfer case; 3. an adjustment mechanism; 301. a gas storage tank; 302. a connecting sleeve; 303. a movable plunger; 304. a movable magnetic ring; 305. a first magnetic ring; 306. a second magnetic ring; 307. a fixing plate; 308. a movable plate; 309. a sealing block; 310. a limiting seal box; 4. a power mechanism; 401. a water storage tank; 402. a first water pipe; 403. a second water pipe; 404. a rotating plate; 405. a water collection plate; 406. outputting; 5. a cooling mechanism; 501. a heat dissipation air outlet box; 502. a first gear; 503. a second gear; 504. a rotating shaft; 505. a rotor blade; 6. a second type of heat pump system; 7. circulating a water outlet pipe; 8. a return pipe; 9. a battery water outlet pipe; 10. an electrically controlled valve.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the drawings of the present invention, and the configurations of the respective configurations described in the following embodiments are merely examples, and the heat pump system for recovering waste heat of a fuel cell power generation system according to the present invention is not limited to the configurations described in the following embodiments, and all other embodiments obtained by a person skilled in the art without any inventive work belong to the scope of protection of the present invention.
Referring to fig. 1 and 2, the invention provides a heat pump system for recovering waste heat of a fuel cell power generation system, comprising a fuel cell stack 1, wherein a cooling mechanism 5 is fixedly connected to the bottom end of the fuel cell stack 1, a cell water outlet pipe 9 is fixedly connected to the bottom end of the side surface of the fuel cell stack 1, a heat transfer box 2 is fixedly connected to the bottom end of the cell water outlet pipe 9, an adjusting mechanism 3 is fixedly connected to the side surface of the heat transfer box 2 far away from the cooling mechanism 5, a power mechanism 4 is fixedly connected to the bottom end of the heat transfer box 2, and the power mechanism 4 is fixedly connected with a second type heat pump system 6 through a circulating water outlet pipe 7.
Compared with the conventional scheme, in the technical scheme of the present application, the wastewater generated from the cathode end of the fuel cell stack 1 flows into the heat conduction box 2 through the cell water outlet pipe 9, and enters the second type heat pump system 6 through the heat conduction box 2, the power mechanism 4 and the circulating water outlet pipe 7, and the temperature of the low-grade wastewater generated by the fuel cell stack 1 in the second type heat pump system 6 is raised, so that the heat source in the fuel cell stack 1 can be utilized by the second type heat pump system 6, and the resource utilization rate and the utilization efficiency in the whole system are improved.
Referring to fig. 3 and 4, a gas storage tank 301 is fixedly connected to a side of the heat transfer box 2, a connection sleeve 302 is fixedly connected to a side of the gas storage tank 301 far away from the heat transfer box 2, a through hole matched with the movable plunger 303 is formed in both the side of the gas storage tank 301 and the inside of the connection sleeve 302, the movable plunger 303 and the connection sleeve 302 are in a sealed state, a first magnetic ring 305 is fixedly connected to a side of the connection sleeve 302 far away from the gas storage tank 301, a movable magnetic ring 304 is fixedly connected to a side of the movable plunger 303, a second magnetic ring 306 is movably sleeved on a side of the movable plunger 303 far away from the connection sleeve 302, the second magnetic ring 306 is fixedly connected to the gas storage tank 301 through a fixing plate 307, the magnetic poles of the contact surfaces of the first magnetic ring 305 and the movable magnetic ring 304 are different, the magnetic poles of the contact surfaces of the movable magnetic ring 304 and the second magnetic ring 306 are different, and a movable plate 308 is fixedly connected to the bottom end of the movable magnetic ring 304, the bottom end of the heat conduction box 2 is fixedly connected with a limit sealing box 310, the side surface of the limit sealing box 310 is provided with a sliding groove matched with the movable plate 308, the side surface of the movable plate 308 is provided with a through hole, the inside of the movable plate 308 is provided with a mounting groove matched with the sealing block 309, the bottom end of the heat conduction box 2 is provided with two through holes, the size of the through hole of the movable plate 308 is the same as that of the through hole of the heat conduction box 2, when the movable magnetic ring 304 is in contact with the first magnetic ring 305, the through hole of the movable plate 308 and one through hole of the heat conduction box 2 are in the same axis, and when the movable magnetic ring 304 is in contact with the second magnetic ring 306, the through hole of the movable plate 308 and the other through hole of the heat conduction box 2 are in the same axis.
In the embodiment of the present application, when water flowing out of the fuel cell stack 1 enters the heat transfer box 2, the heat transfer box 2 transfers heat inside the heat transfer box to the gas storage tank 301, the gas inside the gas storage tank 301 is subject to thermal expansion and cold contraction, when the temperature inside the heat transfer box 2 is lower than 65 ℃, the gas inside the gas storage tank 301 contracts, so that the movable plunger 303 drives the movable magnetic ring 304 to move towards the inside, after moving for a certain distance, the distance between the movable magnetic ring 304 and the first magnetic ring 305 increases, the magnetic attraction force decreases, the magnetic force is greater than the gas pressure, even if the gas pressure is insufficient, the first magnetic ring 305 still can be attracted to the side of the first magnetic ring 305 under the action of the magnetic attraction force, the movable magnetic ring 304 drives the movable plate 308 to move, at this time, the through hole inside the movable plate 308 connects a through hole inside the heat transfer box 2 with the first water pipe 402, when the temperature of the water flowing out from the fuel cell stack 1 is higher than 80 ℃, the gas in the gas storage tank 301 expands, after the gas in the gas storage tank 301 expands, the gas pressure of the movable plunger 303 is higher than the magnetic attraction between the movable magnetic ring 304 and the first magnetic ring 305, so the first magnetic ring 305 is separated from the movable magnetic ring 304, the movable magnetic ring 304 is close to the second magnetic ring 306, and the magnetic attraction between the second magnetic ring 306 and the movable magnetic ring 304 can adsorb the movable magnetic ring 304 to the side surface of the second magnetic ring 306.
Referring to fig. 5, 6 and 7, a water storage tank 401 is fixedly connected to the bottom end of the limiting seal box 310, a first water pipe 402 and a second water pipe 403 are fixedly connected to the inside of the water storage tank 401, the first water pipe 402 is located on the central line of the water storage tank 401, the second water pipe 403 is located on the side surface of the first water pipe 402 away from the cooling mechanism 5, a rotating plate 404 is arranged at the bottom end of the second water pipe 403, an output 406 is fixedly connected to the inside of the rotating plate 404, the second type heat pump system 6 is fixedly connected to the fuel cell stack 1 through a return pipe 8, an electric control valve 10 is arranged on the side surface of the return pipe 8, a water collection plate 405 is fixedly connected to the bottom end of the water storage tank 401, a conical groove is formed in the top end of the water collection plate 405, a through hole matched with the circulating water outlet pipe 7 is formed in the central line of the conical groove of the water collection plate 405, a first gear 502 is fixedly connected to the side surface of the output 406, a second gear 503 is connected to the side surface of the first gear 502 in a driving manner, the first gear 502 and the second gear 503 are engaged with each other, the top end of the second gear 503 is fixedly connected with a rotating shaft 504, the top end of the rotating shaft 504 is movably connected with a heat dissipation air outlet box 501, the top end of the heat dissipation air outlet box 501 is fixedly connected with the bottom end of the fuel cell stack 1, the side surface of the rotating shaft 504 is fixedly connected with a rotating blade 505, and the top end of the side surface of the heat dissipation air outlet box 501 is provided with a vent hole.
In the embodiment of the application, water in the fuel cell stack 1 at a low temperature and entering the first water pipe 402 directly enters the circulating water outlet pipe 7 through the first water pipe 402, and is heated by the second heat pump system 6, and then, part of the heated water flows back into the fuel cell stack 1 through the return pipe 8, so that the temperature in the fuel cell stack 1 rises to above 65 ℃, and when the temperature of the water in the fuel cell stack 1 is high, the water in the fuel cell stack 1 flows into the second water pipe 403 at this time, the water entering the second water pipe 403 falls onto the rotating plate 404, so that the rotating plate 404 rotates, the rotating plate 404 rotates to drive the output 406 to rotate, the output 406 rotates to drive the first gear 502 to rotate, the first gear 502 drives the rotating blade 505 to rotate through the transmission of the second gear 503, and at this time, wind blows to the bottom end of the fuel cell stack 1, the hot gas flows out from the vent hole at the top end of the heat dissipation gas outlet box 501, so that the temperature of the fuel cell stack 1 is kept below 80 ℃, the reaction temperature in the fuel cell stack 1 is ensured to be 60-80 ℃, the heat dissipation gas outlet box 501 can support the rotating shaft 504 and the output 406, the top end of the water collecting plate 405 is provided with a conical groove, so that water flowing onto the water collection sheet 405 can more rapidly enter the circulating outlet pipe 7, the second water pipe 403 is positioned above the rotating sheet 404 rather than above the output 406, so that the output 406 is located entirely on one side of the interior of the storage tank 401, rather than centrally, the first pipe 402 is located centrally, the first water pipe 402 does not contact the side of the output 406, and the first water pipe 402 is located on the side of the second water pipe 403 away from the cooling mechanism 5 in fig. 6, for convenience of illustration of the structure, instead of the actual positions, fig. 5 shows the actual positions of the various structures and components in the power mechanism 4 and the cooling mechanism 5.
The working principle of the invention is as follows:
the invention mainly solves the problem of utilizing waste water with certain temperature generated after the fuel cell stack 1 generates electricity and how to control the reaction temperature of the fuel cell stack 1 at 60-80 ℃;
aiming at the problem of waste heat or waste water generated during power generation of the fuel cell stack 1, the waste heat or waste water generated in the fuel cell stack 1 enters the heat conduction box 2 through the cell water outlet pipe 9 and then enters the second type heat pump system 6 through the power mechanism 4 and the circulating water outlet pipe 7, at the moment, the second type heat pump system 6 can raise the temperature of low-grade waste heat, the waste water or waste water can be supplied to people for use after being raised in temperature, and the waste heat generated by the fuel cell stack 1 is directly supplied to the second type heat pump system 6 for utilization, so that the resource utilization rate and the utilization efficiency of the whole system are improved;
for the problem of controlling the temperature in the fuel cell stack 1, when the temperature of wastewater generated after power generation reaction in the fuel cell stack 1 is lower than 65 ℃, water in the fuel cell stack 1 flows into the heat transfer box 2 at this time, after heat transfer is performed through the heat transfer box 2, gas in the gas storage tank 301 contracts at this time, so that the movable plunger 303 drives the movable magnetic ring 304 to move towards the inner side of the gas storage tank 301, and when the movable magnetic ring 304 moves, the movable plate 308 moves, water in the heat transfer box 2 flows into the first water pipe 402 after the movable plate 308 moves, and enters the second heat pump system 6 through the circulating water outlet pipe 7, and after the temperature is increased by the second heat pump system 6, the water flows back into the fuel cell stack 1 through the return pipe 8, so that the temperature of the water in the fuel cell stack 1 is higher than 65 ℃;
when the temperature of water flowing out of the fuel cell stack 1 exceeds 80 ℃, at the time, gas in the gas storage tank 301 expands, so that the movable plunger 303 drives the movable magnetic ring 304 to move outwards, the movable magnetic ring 304 drives the movable plate 308 to move, then water in the heat conduction tank 2 flows into the second water pipe 403, the water in the second water pipe 403 falls onto the rotating plate 404, so that the rotating plate 404 rotates, the rotating plate 404 drives the output 406 to rotate when rotating, the rotating shaft 504 drives the rotating blades 505 to rotate after the output 406 is transmitted by the first gear 502 and the second gear 503, and wind blows over the bottom end of the fuel cell stack 1 when the rotating blades 505 rotate, thereby reducing the temperature of the fuel cell stack 1.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to common designs, and under the condition of no conflict, the same embodiment and different embodiments of the invention can be combined with each other;
and finally: the above description is only exemplary of the present invention and should not be taken as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A heat pump system for recovering waste heat of a fuel cell power generation system, comprising a fuel cell stack (1), characterized in that: the bottom end of the fuel cell stack (1) is fixedly connected with a cooling mechanism (5), the bottom end of the side surface of the fuel cell stack (1) is fixedly connected with a cell water outlet pipe (9), the bottom end of the cell water outlet pipe (9) is fixedly connected with a heat conduction box (2), the side surface of the heat conduction box (2) far away from the cooling mechanism (5) is fixedly connected with an adjusting mechanism (3), the bottom end of the heat conduction box (2) is fixedly connected with a power mechanism (4), and the power mechanism (4) is fixedly connected with a second-type heat pump system (6) through a circulating water outlet pipe (7);
the side of the heat conduction box (2) is fixedly connected with a gas storage box (301), the side of the gas storage box (301) far away from the heat conduction box (2) is fixedly connected with a connecting sleeve (302), the side of the gas storage box (301) and the inside of the connecting sleeve (302) are respectively provided with a through hole matched with a movable plunger (303), the movable plunger (303) and the connecting sleeve (302) are in a sealing state, the side of the connecting sleeve (302) far away from the gas storage box (301) is fixedly connected with a first magnetic ring (305), the side of the movable plunger (303) is fixedly connected with a movable magnetic ring (304), the side of the movable plunger (303) far away from the connecting sleeve (302) is movably sleeved with a second magnetic ring (306), the second magnetic ring (306) is fixedly connected with the gas storage box (301) through a fixing plate (307), the contact surface magnetic poles of the first magnetic ring (305) and the movable magnetic ring (304) are different, the magnetic poles of the contact surfaces of the movable magnetic ring (304) and the second magnetic ring (306) are different, the bottom end of the movable magnetic ring (304) is fixedly connected with a movable plate (308), the bottom end of the heat conduction box (2) is fixedly connected with a limiting sealing box (310), and the side surface of the limiting sealing box (310) is provided with a sliding groove matched with the movable plate (308).
2. The heat pump system for recovering residual heat of a fuel cell power generation system according to claim 1, characterized in that: the side surface of the movable plate (308) is provided with a through hole, the interior of the movable plate (308) is provided with a mounting groove matched with the sealing block (309), the bottom end of the heat conduction box (2) is provided with two through holes, and the size of the through hole of the movable plate (308) is the same as that of the through hole of the heat conduction box (2).
3. The heat pump system for recovering residual heat of a fuel cell power generation system according to claim 2, characterized in that: when the movable magnetic ring (304) is in contact with the first magnetic ring (305), the through hole of the movable plate (308) and one through hole of the heat conduction box (2) are in the same axis, and when the movable magnetic ring (304) is in contact with the second magnetic ring (306), the through hole of the movable plate (308) and the other through hole of the heat conduction box (2) are in the same axis.
4. A heat pump system for recovering residual heat of a fuel cell power generation system according to claim 3, characterized in that: the bottom fixedly connected with storage water tank (401) of spacing seal box (310), the inside fixedly connected with first water pipe (402) and second water pipe (403) of storage water tank (401), first water pipe (402) are located the central line of storage water tank (401), second water pipe (403) are located the side that cooling body (5) were kept away from in first water pipe (402), the bottom of second water pipe (403) is equipped with rotor plate (404), the inside fixedly connected with output (406) of rotor plate (404).
5. The heat pump system for recovering residual heat of a fuel cell power generation system according to claim 1, characterized in that: the second type of heat pump system (6) is fixedly connected with the fuel cell stack (1) through a return pipe (8), and an electric control valve (10) is arranged on the side surface of the return pipe (8).
6. The heat pump system for recovering residual heat of a fuel cell power generation system according to claim 4, characterized in that: the bottom fixedly connected with water collection sheet (405) of storage water tank (401), the conical groove has been seted up on the top of water collection sheet (405), just the clearing hole with circulation outlet pipe (7) looks adaptation has been seted up to the central line position of water collection sheet (405) conical groove.
7. The heat pump system for recovering residual heat of a fuel cell power generation system according to claim 6, characterized in that: the side fixedly connected with first gear (502) of output (406), the side transmission of first gear (502) is connected with second gear (503), first gear (502) and second gear (503) intermeshing, the top fixedly connected with axis of rotation (504) of second gear (503), the top swing joint of axis of rotation (504) has heat dissipation gas outlet box (501), the top of heat dissipation gas outlet box (501) and the bottom fixed connection of fuel cell stack (1), the side fixedly connected with rotating blade (505) of axis of rotation (504), the ventilation hole has been seted up on the top of heat dissipation gas outlet box (501) side.
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| JP2006038359A (en) * | 2004-07-28 | 2006-02-09 | Mitsubishi Electric Corp | Cogeneration system and operation method thereof |
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