CN219868078U - Fuel cell cogeneration system - Google Patents
Fuel cell cogeneration system Download PDFInfo
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- CN219868078U CN219868078U CN202321016346.1U CN202321016346U CN219868078U CN 219868078 U CN219868078 U CN 219868078U CN 202321016346 U CN202321016346 U CN 202321016346U CN 219868078 U CN219868078 U CN 219868078U
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- fuel cell
- water
- storage tank
- outlet pipe
- water storage
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- 239000000446 fuel Substances 0.000 title claims abstract description 135
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 260
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 238000010248 power generation Methods 0.000 claims abstract description 27
- 239000013589 supplement Substances 0.000 claims abstract description 7
- 238000004321 preservation Methods 0.000 claims description 11
- 230000001502 supplementing effect Effects 0.000 claims description 5
- 238000013022 venting Methods 0.000 claims 1
- 230000033228 biological regulation Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The utility model relates to the technical field of fuel cell cogeneration, in particular to a fuel cell cogeneration system. The fuel cell cogeneration system comprises a power generation and heat supply unit, a heat exchange unit, a water storage tank and a liquid supply and compensation unit. The power generation and heat supply unit comprises a fuel cell, a fuel cell water inlet pipe and a fuel cell water outlet pipe, and two ends of the fuel cell are respectively communicated with the fuel cell water inlet pipe and the fuel cell water outlet pipe. The heat exchange unit comprises a heat exchanger, and one end of the fuel cell water inlet pipe, which is far away from the fuel cell, and one end of the fuel cell water outlet pipe, which is far away from the fuel cell, are both communicated with the heat exchanger; the heat exchanger is communicated with the water storage tank, the wall surface of the water storage tank is provided with a resistance wire, and the resistance wire is communicated with a power generation line of the fuel cell. The liquid supply and supplement unit is communicated with the water storage tank. The fuel cell cogeneration system not only has the function of storing liquid, but also has the functions of temperature regulation and heat exchange, so that the energy loss can be reduced, and the cost can be saved.
Description
Technical Field
The utility model relates to the technical field of fuel cell cogeneration, in particular to a fuel cell cogeneration system.
Background
In general, a fuel cell cogeneration system is a fuel-electric system for the combined supply of heat energy and electric energy inside a building. Hydrogen enters a fuel cell bin part of the heat and power combined supply box body from the hydrogen storage system, chemical reaction occurs in the fuel cell system to generate electric energy, and the electric energy is supplied to a building after voltage stabilization, frequency modulation and rectification by the inverter power supply and the power distribution system. The heat exchange system in the cogeneration system belongs to a heat energy storage, supply and temperature control system, hot water generated after hydrogen energy reaction enters a water storage tank through a pipeline, proper temperature is ensured through the temperature control system of the water storage tank, and the hot water is supplied to a building through a supply pipeline.
The fuel cell cogeneration system in the prior art only has the function of storing liquid, and has no functions of temperature regulation and heat exchange. When the fuel cell reacts at a low speed or stops, the loss of the existing stored water temperature cannot be reduced, and the water temperature cannot be kept constant; under the conditions of high-speed reaction of the fuel cell and high-temperature weather in summer, the water temperature cannot be kept constant to avoid overheating, so that the energy loss of the fuel cell cogeneration system is increased, and the cost is increased.
Therefore, there is a need to design a fuel cell cogeneration system to solve the above technical problems.
Disclosure of Invention
The utility model aims to provide a fuel cell cogeneration system which not only has the function of storing liquid, but also has the functions of temperature regulation and heat exchange, so that the energy loss can be reduced, and the cost can be saved.
To achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a fuel cell cogeneration system, comprising:
the power generation and heat supply unit comprises a fuel cell, a fuel cell water inlet pipe and a fuel cell water outlet pipe, and two ends of the fuel cell are respectively communicated with the fuel cell water inlet pipe and the fuel cell water outlet pipe;
the heat exchange unit comprises a heat exchanger, and one end of the fuel cell water inlet pipe, which is far away from the fuel cell, and one end of the fuel cell water outlet pipe, which is far away from the fuel cell, are both communicated with the heat exchanger; the heat exchanger is communicated with the water storage tank; the wall surface of the water storage tank is provided with a resistance wire which is communicated with a power generation line of the fuel cell;
the liquid supply and supplement unit is communicated with the water storage tank and is used for supplying and supplementing liquid for the water storage tank so as to keep the pressure of the liquid in the water storage tank constant.
As an alternative technical scheme of the fuel cell cogeneration system, the heat exchange unit further comprises a heat exchanger water inlet pipe and a heat exchanger water outlet pipe, wherein one end of the heat exchanger water inlet pipe is communicated with the heat exchanger, and the other end is communicated with the water storage tank;
one end of a water outlet pipe of the heat exchanger is communicated with the heat exchanger, and the other end of the water outlet pipe of the heat exchanger is communicated with the water storage tank;
the heat exchanger water inlet pipe and the heat exchanger water outlet pipe are communicated to form a heat exchange flow path, and the fuel cell water inlet pipe and the fuel cell water outlet pipe are communicated to form a power generation and heat supply flow path; the heat exchange flow path and the power generation and heat supply flow path are not communicated with each other.
As an alternative technical scheme of fuel cell cogeneration system, the heat transfer unit still includes first three-way valve, first three-way valve sets up on the heat exchanger outlet pipe, first three-way valve's first port with heat exchanger outlet pipe intercommunication, first three-way valve's second port with the water storage tank intercommunication, first three-way valve's third port through first outlet pipe branch road intercommunication in the heat exchanger inlet tube.
As an alternative technical scheme of the fuel cell cogeneration system, the heat exchange unit further comprises a first water pump, wherein the first water pump is arranged on the heat exchanger water inlet pipe and positioned at the downstream of the first water outlet pipe branch along the water flow direction.
As an alternative technical scheme of the fuel cell cogeneration system, the liquid supply and compensation unit comprises a cold water inlet pipe and a hot water outlet pipe, wherein one end of the cold water inlet pipe is communicated with the water storage tank, and the other end is communicated with the user side; one end of the hot water outlet pipe is communicated with the water storage tank, and the other end of the hot water outlet pipe is communicated with the user end.
As an alternative technical scheme of fuel cell cogeneration system, the liquid supplies the unit to still include the second three-way valve, the second three-way valve sets up on the hot water outlet pipe, the first port of second three-way valve communicate in the hot water outlet pipe, the second port of second three-way valve communicate in the user terminal, the third port of second three-way valve communicate through the second outlet pipe branch road in the cold water inlet pipe.
As an alternative technical scheme of the fuel cell cogeneration system, the wall surface of the water storage tank is provided with a heat preservation liner and a cylinder body, and the resistance wire is connected with the inner wall of the heat preservation liner.
As an alternative technical scheme of the fuel cell cogeneration system, an expansion water tank is arranged on the water storage tank, and the expansion water tank is communicated with the water storage tank through a water supplementing pipeline so as to ensure that the water pressure in the water storage tank is constant.
As an alternative technical scheme of the fuel cell cogeneration system, the expansion water tank is provided with a vent hole, and the vent hole is used for discharging water vapor in the water storage tank so as to ensure that the air pressure in the water storage tank is constant.
As an alternative technical scheme of the fuel cell cogeneration system, the fuel cell cogeneration system further comprises a box body, and the heat exchange unit, the water storage tank and the liquid supply and compensation unit are all arranged in the box body.
The beneficial effects of the utility model at least comprise:
the utility model provides a fuel cell cogeneration system which comprises a power generation and heat supply unit, a heat exchange unit, a water storage tank and a liquid supply unit. The power generation and heat supply unit comprises a fuel cell, a fuel cell water inlet pipe and a fuel cell water outlet pipe, and two ends of the fuel cell are respectively communicated with the fuel cell water inlet pipe and the fuel cell water outlet pipe. The heat exchange unit comprises a heat exchanger, and one end of the fuel cell water inlet pipe, which is far away from the fuel cell, and one end of the fuel cell water outlet pipe, which is far away from the fuel cell, are both communicated with the heat exchanger; the heat exchanger is communicated with the water storage tank, the wall surface of the water storage tank is provided with a resistance wire, and the resistance wire is communicated with a power generation line of the fuel cell. The liquid supply and supplement unit is communicated with the water storage tank and is used for supplying liquid for the water storage tank so as to keep the temperature of the liquid in the water storage tank constant. Through the setting of electricity generation heat supply unit, heat transfer unit, water storage tank and liquid supply unit for this fuel cell cogeneration system not only possesses the function of storage liquid, still possesses temperature regulation and heat transfer's function, thereby can reduce the energy loss of this fuel cell cogeneration system, reaches the purpose of saving the cost. Furthermore, the resistance wire can be directly powered by the fuel cell. So that the water storage tank is provided with two heat preservation modes, namely: the first heat preservation mode is to ensure the water temperature in the water storage tank by heating the resistance wire through the power supply of the fuel cell according to the set temperature. The second heat preservation mode is to control the liquid flow rate flowing through the power generation and heat supply unit and the liquid supply and supplement unit in the heat exchanger to ensure the water temperature in the water storage tank. The two heat preservation modes are supplied by the reaction energy of the fuel cell, no external energy is needed, the environment is protected, no pollution is caused, and the cost is saved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.
FIG. 1 is a schematic flow chart of a fuel cell cogeneration system according to an embodiment of the utility model;
fig. 2 is a schematic structural diagram of a cogeneration system of a fuel cell according to an embodiment of the utility model;
fig. 3 is a front view of a cogeneration system of a fuel cell according to an embodiment of the utility model.
Reference numerals
100. A power generation and heat supply unit; 110. a fuel cell inlet pipe; 120. a fuel cell outlet pipe; 130. a low temperature water pump;
200. a heat exchange unit; 210. a heat exchanger; 220. a heat exchanger water inlet pipe; 230. a water outlet pipe of the heat exchanger; 240. a first three-way valve; 250. a first outlet pipe branch; 260. a first water pump;
300. a water storage tank; 310. a resistance wire;
400. a liquid supply unit; 410. a cold water inlet pipe; 420. a hot water outlet pipe; 430. a second three-way valve; 440. a second outlet pipe branch;
500. an expansion tank; 510. a water supplementing pipeline; 600. a box body.
Detailed Description
In order to make the technical problems solved, the technical scheme adopted and the technical effects achieved by the utility model more clear, the technical scheme of the utility model is further described below by a specific embodiment in combination with the attached drawings.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
As shown in fig. 1 to 3, the present embodiment provides a fuel cell cogeneration system mainly including a power generation and heat supply unit 100, a heat exchange unit 200, a water storage tank 300, and a liquid supply unit 400. The power generation and heat supply unit 100 comprises a fuel cell, a fuel cell water inlet pipe 110 and a fuel cell water outlet pipe 120, wherein two ends of the fuel cell are respectively communicated with the fuel cell water inlet pipe 110 and the fuel cell water outlet pipe 120. The heat exchange unit 200 comprises a heat exchanger 210, and one end of the fuel cell water inlet pipe 110, which is far away from the fuel cell, and one end of the fuel cell water outlet pipe 120, which is far away from the fuel cell, are both communicated with the heat exchanger 210; the heat exchanger 210 is communicated with the water storage tank 300, the wall surface of the water storage tank 300 is provided with a resistance wire 310, and the resistance wire 310 is communicated with a power generation line of the fuel cell. The liquid supply and replenishment unit 400 is communicated with the water storage tank 300, and the liquid supply and replenishment unit 400 is used for supplying the water storage tank 300 with replenishment liquid so as to keep the pressure of the liquid in the water storage tank 300 constant.
Based on the above design, in the present embodiment, the heat exchange unit 200 further includes a heat exchanger water inlet pipe 220 and a heat exchanger water outlet pipe 230, one end of the heat exchanger water inlet pipe 220 is communicated with the heat exchanger 210, the other end is communicated with the water storage tank 300, one end of the heat exchanger water outlet pipe 230 is communicated with the heat exchanger 210, and the other end is communicated with the water storage tank 300. Hot water generated by the fuel cell enters the heat exchanger 210 through the fuel cell water inlet pipe 110, heat is convected to form cold water after heat is convected, and the cold water is discharged through the fuel cell water outlet pipe 120. It should be noted that, as shown in fig. 1, in the present embodiment, the heat exchanger water inlet pipe 220 and the heat exchanger water outlet pipe 230 are communicated into a heat exchange flow path, and the fuel cell water inlet pipe 110 and the fuel cell water outlet pipe 120 are communicated into a power generation and heat supply flow path; the heat exchange flow path and the power generation and heat supply flow path are not communicated with each other.
Further, in order to improve the water flow efficiency, in the present embodiment, a low-temperature water pump 130 may be provided on the fuel cell water outlet pipe 120, so that the cold water in the heat exchanger 210 is discharged after being pressurized by the low-temperature water pump 130, thereby improving the heat exchange efficiency.
Alternatively, in the present embodiment, the power generation and heat supply unit 100 may also supply heat through other batteries for convective heat exchange in the heat exchanger 210, that is, not limited to the power generation and heat supply by using a fuel cell, and will not be described in detail herein.
As shown in fig. 1 to 3, in the present embodiment, the heat exchange unit 200 further includes a first three-way valve 240, the first three-way valve 240 is disposed on the heat exchanger water outlet pipe 230, a first port of the first three-way valve 240 is communicated with the heat exchanger water outlet pipe 230, a second port of the first three-way valve 240 is communicated with the water storage tank 300, and a third port of the first three-way valve 240 is communicated with the heat exchanger water inlet pipe 220 through the first water outlet pipe branch 250.
Further, in the present embodiment, the heat exchange unit 200 further includes a first water pump 260, the first water pump 260 is disposed on the heat exchanger water inlet pipe 220, and the first water pump 260 is located downstream of the first water outlet pipe branch 250 along the water flow direction. The cold water in the water storage tank 300 flows into the heat exchanger 210 from the lower end of the water storage tank 300 through the first water pump 260, exchanges heat with the hot water in the water outlet pipe 120 of the fuel cell, and is divided into two branches after passing through the first port of the first three-way valve 240, one branch flows into the water storage tank 300 through the second port of the first three-way valve 240, and the other branch flows into the first water pump 260 after merging with the cold water flowing out of the lower end of the water storage tank 300 through the first water outlet pipe branch 250 through the third port of the first three-way valve 240. In this way, when the temperature of the hot water at the outlet pipe 230 of the heat exchanger 210 is insufficient, the second port of the first three-way valve 240 is closed, so that water can flow back to the heat exchanger 210 again through the third port of the first three-way valve 240 and can not enter the water storage tank 300 through the second port of the first three-way valve 240 until the water temperature reaches the requirement; when the temperature of the hot water of the outlet pipe of the heat exchanger 210 is within the water storage temperature range of the water storage tank 300, the third port of the first three-way valve 240 is closed, namely, the water flow in the first outlet pipe branch 250 is cut off, so that the water can directly enter the water storage tank 300 through the second port of the first three-way valve 240; when the temperature of the hot water at the outlet pipe of the heat exchanger 210 is too high or the hot water amount thereof is too large, the second port and the third port of the first three-way valve 240 are simultaneously opened, so that a part of hot water and cold water are mixed and then flow back into the first water pump 260, thereby playing a role in cooling. And the fuel cell cogeneration system can keep the water temperature in the water storage tank 300 constant in a convection mode through the heat exchanger 210, and both the electric energy and the heat energy used in the process are provided by the fuel cell, so that the energy loss of the fuel cell cogeneration system is reduced, and the cost is saved.
As shown in fig. 1 to 3, in the present embodiment, the liquid supply unit 400 includes a cold water inlet pipe 410 and a hot water outlet pipe 420, one end of the cold water inlet pipe 410 is communicated with the water storage tank 300, and the other end is communicated with the user side; one end of the hot water outlet pipe 420 is communicated with the water storage tank 300, and the other end is communicated with the user end. In addition, the liquid supply unit 400 further includes a second three-way valve 430, the second three-way valve 430 is disposed on the hot water outlet pipe 420, a first port of the second three-way valve 430 is connected to the hot water outlet pipe 420, a second port of the second three-way valve 430 is connected to the user end, and a third port of the second three-way valve 430 is connected to the cold water inlet pipe 410 through a second outlet pipe branch 440.
When the fuel cell cogeneration system supplies heat to a user side (e.g., a building), hot water enters the building air conditioning pipeline from the upper side of the water storage tank 300 along the hot water outlet pipe 420 through the first port and the second port of the second three-way valve 430. The heated cold water flows from the cold water inlet pipe 410 into the water storage tank 300. When the building air conditioning line temperature reaches the set temperature, the excessive hot water flowing from the water storage tank 300 into the hot water outlet pipe 420 flows into the cold water inlet pipe 410 through the third port of the second three-way valve 430, and flows back into the water storage tank 300 together with cold water returned from the building air conditioning line.
Compared with the prior art, the fuel cell cogeneration system in the embodiment not only has the function of storing liquid, but also has the functions of temperature regulation and heat exchange by arranging the power generation and heat supply unit 100, the heat exchange unit 200, the water storage tank 300 and the liquid supply and compensation unit 400, so that the energy consumption of the fuel cell cogeneration system can be reduced, and the aim of saving the cost is fulfilled.
Optionally, the wall surface of the water storage tank 300 in the present embodiment is provided with a thermal insulation liner, a resistance wire 310 and a cylinder, and the resistance wire 310 is communicated with a power generation line of the fuel cell, so that the resistance wire 310 can be directly powered by the fuel cell. This allows the water storage tank 300 to have two modes of thermal insulation, namely: the first heat preservation mode is to heat the resistance wire 310 to ensure the water temperature in the water storage tank 300 by the power supply of the fuel cell according to the set temperature. The second heat preservation mode is to control the flow rate of the liquid flowing through the power generation and heat supply unit 100 and the liquid supply unit 400 by a controller (not shown) in the heat exchanger 210 to adjust the heat received by the waterway and to ensure the water temperature in the water storage tank 300. The two heat preservation modes are supplied by the reaction energy of the fuel cell, no external energy is needed, the environment is protected, no pollution is caused, and the cost is saved. It should be noted that the manner in which the controller controls the flow rate of the liquid flowing through the electric power and heat supply unit 100 and the liquid supply and compensation unit 400 in this embodiment belongs to the prior art, and thus the control logic of the controller is not specifically described herein.
Alternatively, in the present embodiment, an expansion tank 500 is provided on the water storage tank 300, and the expansion tank 500 communicates with the water storage tank 300 through a water supplementing line 510 so that the water pressure in the water storage tank 300 is constant. Further, the expansion tank 500 is provided with a vent hole for discharging the vapor in the water storage tank 300 so that the air pressure in the water storage tank 300 is constant.
As shown in fig. 2 to 3, in the present embodiment, the fuel cell cogeneration system further includes a tank 600, and the heat exchange unit 200, the water storage tank 300, and the liquid supply unit 400 are all disposed within the tank 600. Thus, the heat exchange unit 200, the water storage tank 300 and the liquid supply and compensation unit 400 can be integrally arranged in the box 600, so that the structure of the fuel cell cogeneration system is miniaturized, the space is saved, and the utilization rate of the space is improved. Meanwhile, the integrated arrangement greatly shortens the lengths of the pipelines and the electric wire harnesses, saves materials and shortens the loss of energy sources in the transmission process. In addition, by installing the fuel cell cogeneration system in the box 600, the electrical harness and the pipeline are effectively isolated from the external environment, so that personnel contact is prevented, and the danger of electric shock of personnel is avoided.
Alternatively, in the present embodiment, the fuel cell outlet pipe 120, the fuel cell inlet pipe 110, the heat exchanger inlet pipe 220 and the heat exchanger outlet pipe 230 are all made of silica gel materials, and both ends of the fuel cell outlet pipe 120 are respectively clamped and fixed on the flange of the case 600 and the hot water gap of the fuel cell by clips. One end of the fuel cell inlet pipe 110 is fixed to the flange of the case 600 by a clip, and the other end is fixed to the fuel cell inlet by a clip. The heat exchanger 210 is secured to the truss by a bottom mounting bracket and four bolts and nuts. The low temperature water pump 130 is fixed to the truss at the lower side of the tank 600 by means of the bottom fixing bracket and four bolts and nuts.
Alternatively, in the present embodiment, the water storage tank 300 is fixed to the case 600 by bolts. The heat exchanger inlet pipe 220 is formed as an external corrugated-jacketed SUS304 stainless steel pipe, one end of which is screw-coupled to the lower nozzle of the water storage tank 300 by screwing nuts, respectively, and the other end of which is screw-coupled to the first water pump 260 in the same manner. The first water pump 260 is fixed to the bottom plate of the tank 600 by the bottom fixing bracket and four bolts and nuts. The heat exchanger water inlet pipe 220 is made of SUS304 stainless steel pipe and is also respectively connected with the right upper nozzle of the heat exchanger 210E and the three-way valve in a threaded manner by screwing nuts.
Alternatively, in the present embodiment, the hot water outlet pipe 420 and the cold water inlet pipe 410 are both formed of SUS304 stainless steel pipes, and the hot water outlet pipe 420 is respectively screw-coupled with the upper nozzle of the water storage tank 300 and the second three-way valve 430 by screwing nuts. The cold water inlet pipe 410 is respectively connected with the lower nozzle of the water storage tank 300 and the three-way pipeline by screw threads in a screwing nut manner. Illustratively, the hot water outlet pipe 420 and the cold water inlet pipe 410 are both made of a silica gel material, and both ends thereof are clamped and fixed by a clamp. Of course, in some alternative embodiments, the pipeline in the fuel cell cogeneration system may be made of other materials, and the fixing of the pipe orifice may also be performed by clamping and fixing by other fixing members except for the clamping hoop, which will not be described in detail herein.
It is to be understood that the foregoing is only illustrative of the presently preferred embodiments of the utility model and the technical principles that have been developed. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.
Note that in the description of this specification, a description of reference to the terms "some embodiments," "other embodiments," and the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Claims (10)
1. A fuel cell cogeneration system comprising:
the power generation and heat supply unit (100), wherein the power generation and heat supply unit (100) comprises a fuel cell, a fuel cell water inlet pipe (110) and a fuel cell water outlet pipe (120), and two ends of the fuel cell are respectively communicated with the fuel cell water inlet pipe (110) and the fuel cell water outlet pipe (120);
the heat exchange unit (200), the heat exchange unit (200) comprises a heat exchanger (210), and one end of the fuel cell water inlet pipe (110) far away from the fuel cell and one end of the fuel cell water outlet pipe (120) far away from the fuel cell are both communicated with the heat exchanger (210); the heat exchanger (210) is communicated with the water storage tank (300); the wall surface of the water storage tank (300) is provided with a resistance wire (310), and the resistance wire (310) is communicated with a power generation circuit of the fuel cell;
and the liquid supply and supplement unit (400), the liquid supply and supplement unit (400) is communicated with the water storage tank (300), and the liquid supply and supplement unit (400) is used for supplying and supplementing liquid to the water storage tank (300) so as to keep the liquid pressure in the water storage tank (300) constant.
2. The fuel cell cogeneration system according to claim 1, wherein said heat exchange unit (200) further comprises a heat exchanger inlet pipe (220) and a heat exchanger outlet pipe (230), one end of said heat exchanger inlet pipe (220) being in communication with said heat exchanger (210) and the other end being in communication with said water storage tank (300);
one end of the heat exchanger water outlet pipe (230) is communicated with the heat exchanger (210), and the other end is communicated with the water storage tank (300);
the heat exchanger water inlet pipe (220) and the heat exchanger water outlet pipe (230) are communicated to form a heat exchange flow path, and the fuel cell water inlet pipe (110) and the fuel cell water outlet pipe (120) are communicated to form a power generation and heat supply flow path; the heat exchange flow path and the power generation and heat supply flow path are not communicated with each other.
3. The fuel cell cogeneration system of claim 2, wherein said heat exchange unit (200) further comprises a first three-way valve (240), said first three-way valve (240) being disposed on said heat exchanger outlet pipe (230), a first port of said first three-way valve (240) being in communication with said heat exchanger outlet pipe (230), a second port of said first three-way valve (240) being in communication with said water storage tank (300), a third port of said first three-way valve (240) being in communication with said heat exchanger inlet pipe (220) through a first outlet pipe branch (250).
4. A fuel cell cogeneration system according to claim 3, wherein said heat exchange unit (200) further comprises a first water pump (260), said first water pump (260) being arranged on said heat exchanger water inlet pipe (220) and downstream of said first water outlet pipe branch (250) in the water flow direction.
5. The fuel cell cogeneration system according to claim 1, wherein said liquid supply unit (400) comprises a cold water inlet pipe (410) and a hot water outlet pipe (420), said cold water inlet pipe (410) having one end in communication with said water storage tank (300) and the other end in communication with a user side; one end of the hot water outlet pipe (420) is communicated with the water storage tank (300), and the other end is communicated with the user end.
6. The cogeneration system of claim 5, wherein the liquid supply unit (400) further comprises a second three-way valve (430), the second three-way valve (430) is disposed on the hot water outlet pipe (420), a first port of the second three-way valve (430) is connected to the hot water outlet pipe (420), a second port of the second three-way valve (430) is connected to the user side, and a third port of the second three-way valve (430) is connected to the cold water inlet pipe (410) through a second outlet pipe branch (440).
7. The fuel cell cogeneration system according to claim 1, wherein a heat preservation liner and a cylinder are provided on a wall surface of said water storage tank (300), and said resistance wire (310) is connected to an inner wall of said heat preservation liner.
8. The fuel cell cogeneration system according to claim 1, wherein an expansion tank (500) is provided on said water storage tank (300), said expansion tank (500) being in communication with said water storage tank (300) through a water replenishment line (510) so as to make the water pressure in said water storage tank (300) constant.
9. The cogeneration system of claim 8, wherein said expansion tank (500) is provided with a vent for venting water vapor from said water storage tank (300) to maintain a constant air pressure within said water storage tank (300).
10. The fuel cell cogeneration system of any one of claims 1-9, further comprising a tank (600), wherein the heat exchange unit (200), the water storage tank (300), and the liquid supply unit (400) are all disposed within the tank (600).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321016346.1U CN219868078U (en) | 2023-04-28 | 2023-04-28 | Fuel cell cogeneration system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321016346.1U CN219868078U (en) | 2023-04-28 | 2023-04-28 | Fuel cell cogeneration system |
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| CN219868078U true CN219868078U (en) | 2023-10-20 |
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| CN202321016346.1U Active CN219868078U (en) | 2023-04-28 | 2023-04-28 | Fuel cell cogeneration system |
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