CN115325597A - Fuel cell cogeneration system - Google Patents
Fuel cell cogeneration system Download PDFInfo
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- CN115325597A CN115325597A CN202211237485.7A CN202211237485A CN115325597A CN 115325597 A CN115325597 A CN 115325597A CN 202211237485 A CN202211237485 A CN 202211237485A CN 115325597 A CN115325597 A CN 115325597A
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- 239000000446 fuel Substances 0.000 title claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 380
- 239000007788 liquid Substances 0.000 claims abstract description 29
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 230000008859 change Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 description 7
- 230000005484 gravity Effects 0.000 description 5
- 239000002826 coolant Substances 0.000 description 4
- 239000000110 cooling liquid Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/02—Hot-water central heating systems with forced circulation, e.g. by pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
- F24D3/1058—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system disposition of pipes and pipe connections
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2103/00—Thermal aspects of small-scale CHP systems
- F24D2103/10—Small-scale CHP systems characterised by their heat recovery units
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Fuel Cell (AREA)
Abstract
The invention belongs to the technical field of combined heat and power, and discloses a combined heat and power system of a fuel cell. The first pipeline is communicated with a liquid outlet and a liquid inlet of the cooling system and penetrates through the heat exchanger. This internal water storage chamber that is provided with of water tank, be provided with heat transfer delivery port and heat transfer water inlet on the water tank body, the heat transfer delivery port sets up in the lower part of water tank body, and the heat transfer water inlet sets up in the upper portion of water tank body. The second pipeline is communicated with the heat exchange water outlet and the heat exchange water inlet and penetrates through the heat exchanger. The third pipeline sets up in the water storage intracavity, and third pipeline one end and heat transfer water inlet intercommunication, the other end and water storage chamber intercommunication. The buoy is arranged at one end of the third pipeline communicated with the water storage cavity and floats on the water surface of the water storage cavity. One end of the water supply pipeline is communicated with the part of the second pipeline between the heat exchange water inlet and the heat exchanger or the third pipeline, and the other end of the water supply pipeline supplies water to a user.
Description
Technical Field
The invention relates to the technical field of combined heat and power, in particular to a combined heat and power system of a fuel cell.
Background
The combined heat and power system of the hydrogen fuel cell is a high-efficiency hydrogen energy utilization system, and can provide electric energy and heat energy for users at the same time. The waste heat recovery system is mainly responsible for managing heat therein, and since heat is mainly exchanged, stored and transferred by using water as a carrier, the waste heat recovery system is usually equipped with a hot water storage tank to store hot water, the hot water storage tank and the water therein provide cooling for the fuel cell, absorb heat released by the fuel cell, and store the heat to supply heat to a user as required in the form of hot water. The heat that current fuel cell cogeneration system, fuel cell produced is transmitted to the heat storage water tank in through the heat exchanger, and high temperature hot water flows into the water tank from water tank upper portion, mixes with the water in the water tank, and cooling water flows out from the water tank lower part, gets into the heat exchanger heat transfer, and when the user need use hot water, supplies water to the user from the water tank bottom, and the water supply temperature is lower, influences user's with hot experience.
Therefore, a fuel cell cogeneration system is needed to solve the above problems.
Disclosure of Invention
The invention aims to provide a fuel cell cogeneration system, which can improve the water supply temperature and the heat consumption experience of users.
In order to achieve the purpose, the invention adopts the following technical scheme:
a fuel cell cogeneration system, comprising:
a fuel cell having a cooling system disposed therein;
a heat exchanger;
the first pipeline is communicated with the liquid outlet and the liquid inlet of the cooling system and penetrates through the heat exchanger, and a first water pump is arranged on the first pipeline;
the water tank comprises a water tank body, a water storage cavity is arranged in the water tank body, a heat exchange water outlet and a heat exchange water inlet are arranged on the water tank body, the heat exchange water outlet is arranged at the lower part of the water tank body, and the heat exchange water inlet is arranged at the upper part of the water tank body;
the second pipeline is communicated with the heat exchange water outlet and the heat exchange water inlet and penetrates through the heat exchanger, and a second water pump is arranged on the second pipeline;
the third pipeline is arranged in the water storage cavity, one end of the third pipeline is communicated with the heat exchange water inlet, and the other end of the third pipeline is communicated with the water storage cavity;
the buoy is arranged at one end of the third pipeline communicated with the water storage cavity, floats on the water surface of the water storage cavity, and can drive one end of the third pipeline communicated with the water storage cavity to float up and down along with the liquid level change of the water storage cavity;
and one end of the water supply pipeline is communicated with the part of the second pipeline between the heat exchange water inlet and the heat exchanger or the third pipeline, and the other end of the water supply pipeline supplies water to a user.
Preferably, the third pipeline includes:
one end of the first connecting pipe is communicated with the heat exchange water inlet, the buoy is arranged at the other end of the first connecting pipe, and the first connecting pipe is a hose;
the first pipe connector is provided with a first port, a second port and a third port, the second port and the third port are symmetrically arranged on two sides of the first pipe connector, the first port is arranged on the top end of the first pipe connector, the second port and the axis of the third port are perpendicular to the axis of the first port, the first port is communicated with one end of the heat exchange water inlet, which is far away from the first connecting pipe, and the second port and the third port are communicated with the third pipeline and the water storage cavity.
Preferably, the buoy is hemispherical, and the spherical surface of the buoy faces upwards, and the bottom surface of the buoy faces downwards to float on the water surface of the water storage cavity.
Preferably, the float is provided with a connecting hole which extends along the radial direction of the float and is perpendicular to the bottom surface, and the first connecting pipe passes through the connecting hole.
Preferably, the buoy is fixedly connected with the top end of the first pipe connector, and the first port and the connecting hole are coaxially arranged.
Preferably, the water supply line includes:
the water tank body is provided with a water storage cavity, the bottom end of the first pipe connector is provided with a first port, the first port is coaxially arranged with the second port, the water tank body is also provided with a water supply port, one end of the first connecting pipe is communicated with the first port, the other end of the first connecting pipe is communicated with the water supply port, and the first connecting pipe is a hose;
and a third connection pipe having one end connected to the water supply port and the other end supplying water to a user.
Preferably, a second pipe joint is arranged on a part, between the heat exchange water inlet and the heat exchanger, of the second pipeline, one end of the water supply pipeline is communicated with the second pipeline through the second pipe joint, and the other end of the water supply pipeline supplies water to a user.
Preferably, the water tank body is further provided with a water replenishing port, and the water replenishing port is arranged on the lower portion of the water tank body and used for replenishing water into the water storage cavity.
Preferably, the water tank body is provided with an insulating layer.
Preferably, the first water pump is arranged on a part of the first pipeline between the liquid outlet and the heat exchanger, and the second water pump is arranged on a part of the second pipeline between the heat exchange water outlet and the heat exchanger.
The invention has the beneficial effects that:
according to the fuel cell cogeneration system, when heat exchange is carried out, cooling liquid in a cooling system of a fuel cell flows to the heat exchanger from the liquid outlet under the driving of the first water pump, water in a water storage cavity of the water tank body flows to the heat exchanger through the heat exchange water outlet under the driving of the second water pump, the water and the cooling liquid exchange heat in the heat exchanger, the cooled cooling liquid flows to the liquid inlet from the heat exchanger, and heated high-temperature water enters the third pipeline through the heat exchange water inlet and enters the water storage cavity of the water tank body through the third pipeline. The cursory one end that sets up in third pipeline and water storage chamber intercommunication, the cursory one end that floats on the surface of water drive third pipeline and water storage chamber intercommunication floats along with the liquid level change in water storage chamber from top to bottom, thereby the one end that makes third pipeline and water storage chamber intercommunication is in the upper strata of the water of water storage intracavity all the time, because the density of water reduces along with the rise of temperature, water after the heat exchanger heating stops in the upper strata of water storage intracavity water behind second port and the third port entering water storage chamber, thereby maintain the high lower floor's of water upper strata temperature layering temperature low. The heat transfer delivery port sets up in the lower part of water tank body, and the water through heat transfer delivery port flow direction heat exchanger is the low temperature water of water lower floor, and low temperature water has better heat absorption effect, and the heat of the coolant liquid in the absorption first pipeline that can be better improves the cooling effect to fuel cell. And the water supply pipeline and the second pipeline that are used for supplying water to the user are located the part or the third pipeline intercommunication between heat transfer water inlet and the heat exchanger to make the water that provides to the user through the water supply pipeline be for being located the high temperature water on water upper strata, or the high temperature water of water storage intracavity water body has not got into after the heat exchanger heating, and then effectively improve water supply temperature, improve user's experience with heat. And the water body with the upper layer temperature higher than the lower layer temperature can store more heat under the condition that the lower layer temperature of the water body is the same.
Drawings
Fig. 1 is a schematic structural diagram of a fuel cell cogeneration system according to an embodiment of the invention;
FIG. 2 is an enlarged view at A in FIG. 1;
fig. 3 is a schematic structural diagram of a fuel cell cogeneration system according to a second embodiment of the invention;
fig. 4 is an enlarged view at B in fig. 3.
In the figure:
1. a fuel cell; 11. a liquid outlet; 12. a liquid inlet;
2. a heat exchanger;
3. a first pipeline; 31. a first water pump;
4. a water tank body; 41. a water storage cavity; 42. a heat exchange water outlet; 43. a heat exchange water inlet; 44. a water supply port; 45. a water replenishing port;
5. a second pipeline; 51. a second water pump; 52. a second pipe joint;
6. a third pipeline; 61. a first connecting pipe; 62. a first pipe joint; 621. a first port; 622. a second port; 623. a third port; 624. a fourth port;
7. floating; 71. spherical surface; 72. a bottom surface;
8. a water supply line; 81. a second connecting pipe; 82. and a third connecting pipe.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used based on the orientations or positional relationships shown in the drawings for convenience of description and simplicity of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
Example one
As shown in fig. 1 and fig. 2, the present embodiment provides a fuel cell cogeneration system, including a fuel cell 1, a heat exchanger 2, a first pipeline 3, a water tank body 4, a second pipeline 5, a third pipeline 6, a float 7, and a water supply pipeline 8. A cooling system is provided in the fuel cell 1. The first pipeline 3 is communicated with a liquid outlet 11 and a liquid inlet 12 of the cooling system and penetrates through the heat exchanger 2, and a first water pump 31 is arranged on the first pipeline 3. Be provided with water storage chamber 41 in the water tank body 4, be provided with heat transfer delivery port 42 and heat transfer water inlet 43 on the water tank body 4, heat transfer delivery port 42 sets up in the lower part of water tank body 4, and heat transfer water inlet 43 sets up in the upper portion of water tank body 4. The second pipeline 5 is communicated with the heat exchange water outlet 42 and the heat exchange water inlet 43 and penetrates through the heat exchanger 2, and a second water pump 51 is arranged on the second pipeline 5. The third pipeline 6 is arranged in the water storage cavity 41, one end of the third pipeline 6 is communicated with the heat exchange water inlet 43, and the other end of the third pipeline is communicated with the water storage cavity 41. Cursory 7 sets up in the one end of third pipeline 6 with water storage chamber 41 intercommunication, cursory 7 floats on the surface of water in water storage chamber 41, and cursory 7 can drive the one end of third pipeline 6 with water storage chamber 41 intercommunication and float along with the liquid level change in water storage chamber 41 from top to bottom. One end of the water supply pipeline 8 is communicated with the part of the second pipeline 5 between the heat exchange water inlet 43 and the heat exchanger 2 or the third pipeline 6, and the other end supplies water to a user.
The fuel cell cogeneration system that this embodiment provided, when carrying out the heat transfer, coolant liquid in the cooling system of fuel cell 1 is under the drive of first water pump 31, by 11 flow direction heat exchangers 2 of liquid outlet, water in the water storage chamber 41 of water tank body 4 flows to heat exchanger 2 through heat transfer delivery port 42 under the drive of second water pump 51, water and coolant liquid heat transfer in heat exchanger 2, the coolant liquid after the cooling flows to inlet 12 by heat exchanger 2, high temperature water after the heating gets into third pipeline 6 through heat transfer water inlet 43, and get into water storage chamber 41 of water tank body 4 through third pipeline 6. Cursory 7 sets up in the one end of third pipeline 6 and water storage chamber 41 intercommunication, it floats about the one end that floats on the surface of water that cursory 7 drove third pipeline 6 and water storage chamber 41 intercommunication is along with the liquid level change in water storage chamber 41, thereby make the one end of third pipeline 6 and water storage chamber 41 intercommunication be in the upper strata of the water in water storage chamber 41 all the time, because the density of water reduces along with the rise of temperature, high temperature water after 2 heats through heat exchanger stops the upper strata of the water in water storage chamber 41 after second port 622 and third port 623 get into water storage chamber 41, thereby maintain the layering temperature that the high lower floor temperature of water upper strata temperature is low. The heat exchange water outlet 42 is arranged at the lower part of the water tank body 4, water flowing to the heat exchanger 2 through the heat exchange water outlet 42 is low-temperature water on the lower layer of the water body, the low-temperature water has a better heat absorption effect, the heat of the cooling liquid in the first pipeline 3 can be better absorbed, and the cooling effect on the fuel cell 1 is improved. And the water supply pipeline 8 that is used for supplying water to the user is located the part or the third pipeline 6 intercommunication between heat transfer water inlet 43 and the heat exchanger 2 with the second pipeline 5 to make the water that provides to the user through water supply pipeline 8 be the high temperature water that is located the water upper strata, or the high temperature water that has not got into the water body in the water storage chamber 41 after the heat exchanger 2 heating, and then effectively improve the water supply temperature, improve user's experience with heat. And compared with the water body with basically the same upper layer temperature and lower layer temperature, the water body with the upper layer temperature higher than the lower layer temperature can store more heat under the condition that the lower layer temperature of the water body is the same.
Alternatively, as shown in fig. 1 and 2, the third pipeline 6 includes a first connection pipe 61 and a first pipe joint 62. One end of the first connecting pipe 61 is communicated with the heat exchange water inlet 43, the floater 7 is arranged at the other end of the first connecting pipe 61, and the first connecting pipe 61 is a hose, so that the floater 7 can drive one end of the first connecting pipe 61 communicated with the water storage cavity 41 to float up and down along with the liquid level change of the water storage cavity 41. Be provided with first port 621, second port 622 and third port 623 on the first pipe connector 62, second port 622 and third port 623 symmetry set up in the both sides of first pipe connector 62, first port 621 sets up in the top of first pipe connector 62, and the axis of second port 622 and third port 623 sets up with the axis of first port 621 is perpendicular, the one end intercommunication of heat transfer water inlet 43 is kept away from to first port 621 and first connecting pipe 61, second port 622 and third port 623 intercommunication third pipeline 6 and water storage chamber 41. This kind of arrangement of first port 621 of first pipe connector 62, second port 622 and third port 623, make first connecting pipe 61 and first port 621 intercommunication after, the focus of first pipe connector 62 is along the axis of first port 621, thereby make second port 622 and third port 623 can keep the level, high temperature water after 2 heats through heat exchanger flows into the water in water storage chamber 41 through second port 622 and third port 623, rivers keep the level, thereby reduce rivers and follow the disturbance of vertical direction to the water, when avoiding high temperature water to enter the water, it is too big to lead to the internal upper strata high temperature water of water and the low temperature water of lower floor to disturb to the water vertical direction and mix.
Further, as shown in fig. 1 and 2, the float 7 is hemispherical, and the upward bottom surface 72 of the spherical surface 71 of the float 7 floats on the water surface of the water storage cavity 41 downward, so that the float 7 can stably float on the water surface, and the shaking of the float 7 is reduced, thereby reducing the influence of the shaking of the float 7 on the first pipe connector 62, and further reducing the disturbance to the water flow flowing into the water storage cavity 41 through the second port 622 and the third port 623.
Further, as shown in fig. 1 and 2, the float 7 is provided with a connecting hole extending along the radial direction of the float 7 and perpendicular to the bottom surface 72, and the first connecting pipe 61 passes through the connecting hole, so that the gravity of the first pipe joint 62 acts on the center of the float 7, thereby realizing that the spherical surface 71 of the float 7 floats on the water surface of the water storage cavity 41 downwards towards the upper bottom surface 72.
Further, the float 7 is fixedly connected with the top end of the first pipe connector 62, and the first port 621 is coaxially arranged with the connecting hole. Therefore, the buoy 7 and the first pipe joint 62 form a structure similar to an inverted tumbler, the gravity center of the inverted tumbler structure formed by the buoy 7 and the first pipe joint 62 is lower, and the situation that the buoy 7 topples to cause the first pipe joint 62 to be suspended in the air under certain extreme conditions is avoided.
In the present embodiment, as shown in fig. 1, the water supply line 8 includes a second connection pipe 81 and a third connection pipe 82. The second connection pipe 81 is disposed in the water storage chamber 41, the bottom end of the first pipe joint 62 is provided with a fourth port 624, the fourth port 624 is disposed coaxially with the first port 621, the water tank body 4 is further provided with a water supply port 44, one end of the second connection pipe 81 is communicated with the fourth port 624, and the other end is communicated with the water supply port 44. The second connecting pipe 81 is a hose, so that the second connecting pipe 81 is prevented from influencing the up-and-down floating of the float 7 along with the liquid level change of the water storage cavity 41. The fourth port 624 is disposed at the bottom end of the first pipe connector 62 and is coaxial with the first port 621, so that the gravity of the second connecting pipe 81 can act on the center of the float 7, and the second port 622 and the third port 623 are prevented from being inclined due to the action of the second connecting pipe 81. The third connection pipe 82 has one end communicating with the water supply port 44 and the other end supplying water to the user.
Specifically, in the present embodiment, the first pipe joint 62 is a four-way pipe joint with two adjacent ports having an included angle of 90 °, and the center of gravity of the first pipe joint 62 is located at the intersection point of the axes of the four ports, and the first port 621 is fixedly connected to the float 7, the first port 621 is fixedly connected to the first connection pipe 61, and the fourth port 624 is fixedly connected to the second connection pipe 81.
Optionally, as shown in fig. 1, a water replenishing port 45 is further provided on the tank body 4, and the water replenishing port 45 is provided at a lower portion of the tank body 4 for replenishing water into the water storage cavity 41.
Optionally, a heat insulation layer is arranged on the water tank body 4, so that the water tank body 4 has a heat insulation effect, when the fuel cell 1 does not work, water in the water storage cavity 41 can also keep a higher temperature for a longer time, and the heat consumption experience of a user is improved.
Optionally, as shown in fig. 1, the first water pump 31 is disposed on a portion of the first pipeline 3 between the liquid outlet 11 and the heat exchanger 2, so that the first water pump 31 is close to the liquid outlet 11 of the fuel cell 1, thereby improving a liquid pumping effect of the first water pump 31 and reducing energy consumption of the first water pump 31. The second water pump 51 is arranged on the part of the second pipeline 5 between the heat exchange water outlet 42 and the heat exchanger 2, so that the second water pump 51 is close to the heat exchange water outlet 42 of the water tank body 4, the water pumping effect of the second water pump 51 is improved, and the energy consumption of the second water pump 51 is reduced.
In the cogeneration system of fuel cells according to this embodiment, when the water supply line 8 requires water supply, the high-temperature water flowing from the heat exchange water inlet 43 to the first port 621 preferentially flows to the water supply port 44 through the fourth port 624 and the second connection pipe 81 by gravity, so as to increase the temperature of the supplied water. When the flow rate of the high-temperature water flowing from the heat exchange water inlet 43 to the first port 621 is larger than the water supply requirement of the water supply line 8, the excessive high-temperature water flows into the upper layer of the water body of the water storage chamber 41 through the second port 622 and the third port 623. When the water supply line 8 does not supply water, the high-temperature water flowing from the heat exchange water inlet 43 to the first port 621 flows into the upper layer of the water body of the water storage chamber 41 through the second port 622 and the third port 623. When the high-temperature water flowing from the heat exchange water inlet 43 to the first port 621 cannot satisfy the water supply requirement of the water supply line 8, the high-temperature water in the upper layer of the water body enters the first pipe joint 62 through the second port 622 and the third port 623, and flows toward the water supply port 44 through the second connection pipe 81. When the water supply line 8 has a water supply demand and the heat exchange inlet 43 has no high temperature water flowing, the water supply demand of the water supply line 8 is completely supplied by the high temperature water on the upper layer of the water body of the water storage chamber 41.
Example two
As shown in fig. 3 and fig. 4, the present embodiment provides a fuel cell cogeneration system, which is substantially the same as the fuel cell cogeneration system of the first embodiment, except that in the fuel cell cogeneration system of the present embodiment, the first pipe joint 62 is a three-way pipe joint, that is, only the first port 621, the second port 622 and the third port 623 are arranged on the first pipe joint 62, the second pipe joint 52 is arranged on a portion of the second pipeline 5 between the heat exchange water inlet 43 and the heat exchanger 2, one end of the water supply pipeline 8 is communicated with the second pipeline 5 through the second pipe joint 52, and the other end supplies water to a user.
In the fuel cell cogeneration system of this embodiment, when the water supply line 8 requires water supply, the high-temperature water heated by the heat exchanger 2 and flowing to the second pipe connection 52 is supplied to the user preferentially through the water supply line 8, so as to increase the water supply temperature. When the flow rate of the high-temperature water heated by the heat exchanger 2 and flowing to the second pipe connector 52 is greater than the water supply requirement of the water supply pipeline 8, the redundant high-temperature water flows into the upper layer of the water body of the water storage cavity 41 through the second port 622 and the third port 623 on the third pipeline 6. When there is no water supply demand from the water supply line 8, all the high-temperature water heated by the heat exchanger 2 and flowing to the second pipe connection 52 flows into the upper layer of the water body of the water storage chamber 41 through the second port 622 and the third port 623. When the high-temperature water heated by the heat exchanger 2 and flowing to the second pipe joint 52 cannot meet the water supply requirement of the water supply pipeline 8, the high-temperature water on the upper layer of the water body enters the first pipe joint 62 through the second port 622 and the third port 623 and flows to the second pipe joint 52 through the first connection pipe 61, so that the shortage of the high-temperature water heated by the heat exchanger 2 and flowing to the second pipe joint 52 is compensated. When the water supply line 8 has a water supply demand without high-temperature water flowing to the second pipe connection 52 after being heated by the heat exchanger 2, the water supply demand of the water supply line 8 is completely supplied by the high-temperature water in the upper layer of the water body of the water storage chamber 41. Compared with the fuel cell cogeneration system in the first embodiment, the fuel cell cogeneration system in the first embodiment omits a part of the water supply pipeline 8, which is positioned in the water tank body 4, and saves cost.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A fuel cell cogeneration system, comprising:
a fuel cell (1) in which a cooling system is provided;
a heat exchanger (2);
the first pipeline (3) is communicated with a liquid outlet (11) and a liquid inlet (12) of the cooling system and penetrates through the heat exchanger (2), and a first water pump (31) is arranged on the first pipeline (3);
the water tank comprises a water tank body (4), wherein a water storage cavity (41) is arranged in the water tank body (4), a heat exchange water outlet (42) and a heat exchange water inlet (43) are arranged on the water tank body (4), the heat exchange water outlet (42) is arranged at the lower part of the water tank body (4), and the heat exchange water inlet (43) is arranged at the upper part of the water tank body (4);
the second pipeline (5) is communicated with the heat exchange water outlet (42) and the heat exchange water inlet (43) and penetrates through the heat exchanger (2), and a second water pump (51) is arranged on the second pipeline (5);
the third pipeline (6) is arranged in the water storage cavity (41), one end of the third pipeline (6) is communicated with the heat exchange water inlet (43), and the other end of the third pipeline is communicated with the water storage cavity (41);
the buoy (7) is arranged at one end of the third pipeline (6) communicated with the water storage cavity (41), the buoy (7) floats on the water surface of the water storage cavity (41), and the buoy (7) can drive one end of the third pipeline (6) communicated with the water storage cavity (41) to float up and down along with the liquid level change of the water storage cavity (41);
and one end of the water supply pipeline (8) is communicated with the part of the second pipeline (5) between the heat exchange water inlet (43) and the heat exchanger (2) or the third pipeline (6), and the other end of the water supply pipeline supplies water to a user.
2. The fuel cell cogeneration system according to claim 1, wherein said third pipe (6) comprises:
one end of the first connecting pipe (61) is communicated with the heat exchange water inlet (43), the buoy (7) is arranged at the other end of the first connecting pipe (61), and the first connecting pipe (61) is a hose;
first pipe connector (62), be provided with first port (621), second port (622) and third port (623) on it, second port (622) with third port (623) symmetry set up in the both sides of first pipe connector (62), first port (621) set up in the top of first pipe connector (62), just second port (622) with the axis of third port (623) with the axis of first port (621) sets up perpendicularly, first port (621) with first connecting pipe (61) is kept away from the one end intercommunication of heat transfer water inlet (43), second port (622) with third port (623) intercommunication third pipeline (6) with water storage chamber (41).
3. The fuel cell cogeneration system according to claim 2, wherein the float (7) is hemispherical, and a spherical surface (71) of the float (7) floats on the water surface of the water storage chamber (41) with an upward bottom surface (72) facing downward.
4. The fuel cell cogeneration system according to claim 3, wherein the float (7) is provided with a connection hole extending in a radial direction of the float (7) and perpendicular to the bottom surface (72), the first connection pipe (61) being passed through the connection hole.
5. The fuel cell cogeneration system according to claim 4, wherein the float (7) is fixedly connected to a top end of the first pipe joint (62), and the first port (621) is provided coaxially with the connecting hole.
6. The fuel cell cogeneration system according to any one of claims 2 to 5, wherein said water supply line (8) comprises:
the second connecting pipe (81) is arranged in the water storage cavity (41), a fourth port (624) is arranged at the bottom end of the first pipe connector (62), the fourth port (624) and the first port (621) are coaxially arranged, a water supply port (44) is further arranged on the water tank body (4), one end of the second connecting pipe (81) is communicated with the fourth port (624), the other end of the second connecting pipe is communicated with the water supply port (44), and the second connecting pipe (81) is a hose;
and a third connection pipe (82) having one end connected to the water supply port (44) and the other end supplying water to a user.
7. The fuel cell cogeneration system according to any one of claims 2 to 5, wherein a second pipe joint (52) is provided on a portion of the second pipe (5) between the heat exchange water inlet (43) and the heat exchanger (2), the water supply pipe (8) having one end communicating with the second pipe (5) through the second pipe joint (52) and the other end supplying water to a user.
8. The fuel cell cogeneration system according to claim 1, wherein a water replenishing port (45) is further provided on the water tank body (4), and the water replenishing port (45) is provided at a lower portion of the water tank body (4) and is used for replenishing water into the water storage cavity (41).
9. The fuel cell cogeneration system according to claim 1, wherein an insulating layer is provided on the water tank body (4).
10. The fuel cell cogeneration system according to claim 1, wherein the first water pump (31) is provided on a portion of the first pipe (3) between the liquid outlet (11) and the heat exchanger (2), and the second water pump (51) is provided on a portion of the second pipe (5) between the heat exchange water outlet (42) and the heat exchanger (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211237485.7A CN115325597B (en) | 2022-10-11 | 2022-10-11 | Fuel cell cogeneration system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211237485.7A CN115325597B (en) | 2022-10-11 | 2022-10-11 | Fuel cell cogeneration system |
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| CN115325597A true CN115325597A (en) | 2022-11-11 |
| CN115325597B CN115325597B (en) | 2022-12-30 |
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| CN215336635U (en) * | 2021-08-11 | 2021-12-28 | 江苏清能动力科技有限公司 | Combined heat and power system using fuel cell system |
| CN114883597A (en) * | 2022-05-27 | 2022-08-09 | 山东金科氢能科技有限公司 | Fuel cell combined supply system |
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| CN101561190A (en) * | 2008-09-10 | 2009-10-21 | 何心照 | Solar water heater system for fast heating and preferential discharge of hot water |
| US20150240467A1 (en) * | 2012-09-07 | 2015-08-27 | David Davis | Cistern for flushing a toilet with potable and gray water |
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| CN115325597B (en) | 2022-12-30 |
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