CN113285092A - Hydrogen circulating device - Google Patents
Hydrogen circulating device Download PDFInfo
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- CN113285092A CN113285092A CN202110741411.6A CN202110741411A CN113285092A CN 113285092 A CN113285092 A CN 113285092A CN 202110741411 A CN202110741411 A CN 202110741411A CN 113285092 A CN113285092 A CN 113285092A
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- hydrogen
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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
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04097—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with recycling of the reactants
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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
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04104—Regulation of differential pressures
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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
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
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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
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
- H01M8/04225—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells during start-up
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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
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
- H01M8/04253—Means for solving freezing problems
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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
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0432—Temperature; Ambient temperature
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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
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04746—Pressure; Flow
- H01M8/04753—Pressure; Flow of fuel cell reactants
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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
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04746—Pressure; Flow
- H01M8/04776—Pressure; Flow at auxiliary devices, e.g. reformer, compressor, burner
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- 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 invention provides a hydrogen circulating device, which belongs to the technical field of fuel cells and comprises: the pump shell is provided with a circulating cavity, and the pump shell is provided with a circulating gas inlet, a circulating gas outlet and a hydrogen purging port which are communicated with the circulating cavity; the pump rotor is arranged in the circulating cavity; and the hydrogen throttling component is arranged outside the circulating cavity, is communicated with the circulating cavity through a hydrogen purging port, and realizes ice breaking through hydrogen with throttling and temperature rising characteristics. According to the hydrogen circulating device provided by the invention, the hydrogen purging port is formed in the pump shell, the hydrogen throttling component is arranged at the hydrogen purging port, hydrogen with throttling and heating characteristics is introduced into the circulating cavity, the temperature of the frozen part can be raised and iced, the freezing of the pump rotor is avoided, the motor component can normally run, the damage to the motor component is reduced, the normal running of the hydrogen circulating device is ensured, the influence on the performance of a hydrogen fuel cell system is reduced, and the damage to a cell stack is reduced.
Description
Technical Field
The invention belongs to the technical field of fuel cells, and particularly relates to a hydrogen circulating device.
Background
A hydrogen fuel cell is an electrochemical reaction device that generates electric energy through catalytic reaction using hydrogen and oxygen in the air as reactant gases of an anode and a cathode, respectively, and generates water without any pollution. The hydrogen fuel cell has the characteristics of cleanness, high efficiency, no pollution, high energy efficiency, high reliability and the like, and has wide application prospect in the fields of standby power supplies, small and medium-sized power stations, new energy automobiles and the like.
The hydrogen circulating pump is an important component of the hydrogen fuel cell system and can circularly pressurize the excessive hydrogen discharged from the cell stack, so that the hydrogen is introduced into the cell stack again for reaction. Because excessive hydrogen discharged from the cell stack contains certain water vapor, after the hydrogen pump is used for a period of time, a certain amount of water is accumulated in a rotor compression cavity of the hydrogen circulating pump, when the temperature is low, the water vapor can be condensed into ice to freeze a pump rotor, a motor spindle rotates and the pump rotor freezes and cannot rotate when a motor is started, so that the hydrogen circulating pump cannot normally operate, the performance of a hydrogen fuel cell system is reduced, and the cell stack can be damaged in serious cases.
Disclosure of Invention
The invention aims to provide a hydrogen circulating device, and aims to solve the technical problems that when the temperature is low, water vapor can be condensed into ice to freeze a pump rotor, a motor spindle rotates when a motor is started, and the pump rotor is frozen and cannot rotate, so that a hydrogen circulating pump cannot normally operate, the performance of a hydrogen fuel cell system is reduced, and a cell stack is damaged in serious cases.
In order to achieve the purpose, the invention adopts the technical scheme that: provided is a hydrogen circulation device including: the pump shell is provided with a circulating cavity and is provided with a circulating gas inlet, a circulating gas outlet and a hydrogen purging port which are communicated with the circulating cavity; the pump rotor is arranged in the circulating cavity; and the hydrogen throttling component is arranged outside the circulation cavity, is communicated with the circulation cavity through the hydrogen purging port and realizes ice breaking through hydrogen with throttling and temperature rising characteristics.
In one possible implementation, the hydrogen throttling assembly includes: one end of the hydrogen pipeline is communicated with the circulation cavity through the hydrogen purging port, and the other end of the hydrogen pipeline is communicated with hydrogen supply equipment; and a throttling element which is matched with the hydrogen purging opening or the hydrogen pipeline.
In one possible implementation, the hydrogen throttling assembly further includes a hydrogen cylinder in communication with the other end of the hydrogen conduit, the hydrogen cylinder being disposed adjacent to the pump housing.
In a possible implementation manner, the hydrogen throttling assembly further comprises a regulating valve arranged on the hydrogen pipeline so as to control the hydrogen purging state.
In a possible implementation manner, the hydrogen throttling assembly further comprises a temperature detector arranged in the circulation cavity to control the hydrogen purging state.
In one possible implementation, the throttling element is a pressure reducing valve disposed in the hydrogen purge port or in the hydrogen pipeline.
In one possible implementation, the throttling element is an orifice plate provided in the hydrogen purge port or in the hydrogen pipeline.
In a possible implementation manner, the throttling element is a capillary tube, one end of the capillary tube is communicated with the hydrogen purging port, and the other end of the capillary tube is communicated with the hydrogen pipeline.
In one possible implementation, the circulation gas outlet, the circulation gas inlet, and the hydrogen purge port are provided in this order on the pump housing.
In one possible implementation, the hydrogen purge port is provided in the bottom of the pump housing, or in a side of the pump housing adjacent the bottom.
The hydrogen circulating device provided by the invention at least has the following technical effects: compared with the prior art, the hydrogen circulating device provided by the invention has the advantages that the hydrogen purging port is formed in the pump shell, the hydrogen throttling component is arranged at the hydrogen purging port, hydrogen with throttling and heating characteristics is introduced into the circulating cavity, the frozen part can be heated and iced, the freezing of the pump rotor is avoided, the motor component can normally run, the damage to the motor component is reduced, the normal running of the hydrogen circulating device is ensured, the influence on the system performance of the hydrogen fuel cell is reduced, and the damage to the cell stack is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic view of a hydrogen circulation device according to an embodiment of the present invention;
FIG. 2 is a schematic view of a hydrogen recycling apparatus according to another embodiment of the present invention;
FIG. 3 is a schematic view of a hydrogen recycling apparatus according to still another embodiment of the present invention;
FIG. 4 is a schematic view of a hydrogen circulation device according to still another embodiment of the present invention;
fig. 5 is a schematic diagram illustrating a start-up process of a hydrogen fuel cell system according to an embodiment of the present invention.
Description of reference numerals:
100. hydrogen circulation device 110, pump housing 111, and circulation chamber
112. A circulating gas inlet 113, a circulating gas outlet 114 and a hydrogen purging port
115. Motor cavity 116, transmission cavity 120, pump rotor
130. Hydrogen throttle assembly 131, hydrogen pipe 132, throttling element
133. Hydrogen cylinder 134, regulating valve 135 and temperature detector
140. Motor assembly 141, motor stator 142 and motor rotor
150. Transmission assembly 160 and control assembly
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "in communication with" another element, it can be directly in communication with the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on," "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "electrically connected," it can be wired or wireless.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
Referring to fig. 1 to 5, a hydrogen circulation device 100 according to an embodiment of the present invention will now be described.
Referring to fig. 1 to 4, an embodiment of the invention provides a hydrogen circulation device 100, including: a pump housing 110 having a circulation chamber 111, the pump housing 110 being provided with a circulation gas inlet 112, a circulation gas outlet 113 and a hydrogen purge port 114 communicating with the circulation chamber 111; a pump rotor 120 provided in the circulation chamber 111; and the hydrogen throttling component 130 is arranged outside the circulation cavity 111, is communicated with the circulation cavity 111 through the hydrogen purging port 114, and realizes ice breaking through hydrogen with throttling and temperature rising characteristics.
It is understood that the pump housing 110 has a motor chamber 115, a transmission chamber 116, and a circulation chamber 111 arranged in this order, and the hydrogen circulation device 100 includes a motor assembly 140 disposed in the motor chamber 115, a transmission assembly 150 disposed in the transmission chamber 116, and a pump rotor 120 disposed in the circulation chamber 111.
The motor assembly 140 includes a motor stator 141 and a motor rotor 142, the transmission assembly 150 includes a gear pair driven by the motor rotor 142, and the pump rotor 120 is engaged with the gear pair and the motor rotor 142. The motor rotor 142 can rotate the pump rotor 120, thereby pressurizing the circulating hydrogen gas. The excessive circulating hydrogen discharged from the cell stack is introduced into the circulating chamber 111 from the circulating gas inlet 112, pressurized by the rotation of the pump rotor 120, and discharged from the circulating gas outlet 113 to be discharged into the cell stack for reaction.
The inventor researches and discovers that the Joule-Thomson coefficient of hydrogen is negative when the hydrogen is above 195K (-78 ℃) under normal pressure according to the Joule-Thomson effect. Under the working condition of-40 ℃ to 85 ℃ of the hydrogen fuel cell system, the temperature of the hydrogen fuel cell system is far higher than the critical temperature of hydrogen, so that the temperature of the hydrogen is increased after throttling expansion, and the heating effect is achieved. According to the above principle, the hydrogen circulation device 100 is provided with the hydrogen throttle unit 130, and the temperature of the gas is increased by the change in pressure, thereby heating and deicing the cold region.
The hydrogen throttling component 130 is disposed at any position of the circulation cavity 111, and is communicated with the circulation cavity 111 through the hydrogen purge port 114, which is not limited thereto. The hydrogen throttling component 130 can be used for providing purging hydrogen with throttling, pressure reducing and temperature increasing characteristics for the circulation cavity 111, so that a frozen part is heated and iced. Since the pump rotor 120 is used to pressurize the excess circulating hydrogen discharged from the cell stack, the purge hydrogen is introduced into the circulating cavity 111 without affecting the pressurizing process of the circulating hydrogen, and can be discharged together with the circulating hydrogen. It is understood that the hydrogen circulation device 100 further includes a control component 160, and the control component 160 is mainly a sum of devices such as a processor, a comparator, and the like, and has a control function capable of controlling the working state of the hydrogen circulation device 100.
In addition, when the hydrogen throttling assembly 130 is disposed at the hydrogen purge port 114, the sealing performance of the hydrogen throttling assembly 130 at the mating part is ensured, for example, by disposing a multi-layer sealing ring, a labyrinth fitting groove, or the like.
Referring to fig. 5, for example, during the operation of the hydrogen fuel cell system, the ambient temperature is measured first, when the temperature is lower than 5 ℃, the hydrogen circulation device 100 is normally started, and when the hydrogen circulation device 100 is successfully started, the hydrogen fuel cell system is started; the hydrogen throttling assembly 130 is opened to purge the circulation chamber 111 when the hydrogen circulation device 100 is not successfully started, the hydrogen fuel cell system is started when the hydrogen circulation device 100 is successfully started, and the circulation chamber 111 is continuously purged if the hydrogen circulation device 100 is not successfully started.
The hydrogen circulation device 100 provided by the embodiment of the invention at least has the following technical effects: compared with the prior art, in the hydrogen circulation device 100 provided by the embodiment of the invention, the pump housing 110 is provided with the hydrogen purging port 114, the hydrogen throttling component 130 is arranged at the hydrogen purging port 114, hydrogen with throttling and heating characteristics is introduced into the circulation cavity 111, the temperature of the frozen part can be raised and iced, the freezing of the pump rotor 120 is avoided, the motor component 140 can normally run, the damage to the motor component 140 is reduced, the normal running of the hydrogen circulation device 100 is ensured, the influence on the performance of a hydrogen fuel cell system is reduced, and the damage to a cell stack is reduced.
The specific composition of hydrogen throttling assembly 130 is not limited, as exemplified below.
Referring to fig. 2-4, in some possible embodiments, the hydrogen throttling assembly 130 includes: a hydrogen pipeline 131, one end of which is communicated with the circulation cavity 111 through a hydrogen purge port 114, and the other end of which is communicated with a hydrogen supply device; and a throttling element 132 cooperating with the hydrogen purge port 114 or the hydrogen pipe 131. In this embodiment, the hydrogen pipeline 131 is used to communicate the hydrogen purge port 114 with the hydrogen supply device, so as to transport the purge hydrogen. The throttling element 132 is matched with the hydrogen purging port 114 or the hydrogen pipeline 131, so that the purging hydrogen has pressure difference before being conveyed to the circulation cavity 111, and further has the characteristics of pressure reduction and temperature rise, and the aim of ice breaking is fulfilled.
Referring to fig. 3 and 4, in some possible embodiments, the hydrogen throttling assembly 130 further includes hydrogen cylinders 133 in communication with the other end of the hydrogen conduit 131, the hydrogen cylinders 133 being disposed adjacent to the pump housing 110. In this embodiment, the hydrogen circulation device 100 is provided with hydrogen cylinders 133, and the hydrogen cylinders 133 serve as hydrogen supply devices to timely supply the circulation chamber 111 with purging hydrogen. The hydrogen cylinders 133 may be disposed outside the pump housing 110 by a fixing seat, welding, or the like. For example, the pump housing 110 is provided with a fixing seat having an accommodating space, and the hydrogen cylinders 133 are placed in the accommodating space, which is beneficial to improving the compactness of the overall structure.
Of course, the hydrogen cylinders 133 may also be provided at intervals adjacent to the pump housing 110, improving the flexibility of the installation location in the overall hydrogen fuel cell system.
Referring to fig. 4, in some possible embodiments, the hydrogen throttling assembly 130 further includes a regulating valve 134 disposed in the hydrogen pipe 131 to control the hydrogen purge condition. In this embodiment, the regulating valve 134 has three states of fully off, partially on, and fully on, the regulating valve 134 is electrically connected to the control assembly 160, and the control assembly 160 can control the opening degree of the regulating valve 134, thereby adjusting the purging state of the purging hydrogen.
Referring to fig. 4, in some possible embodiments, the hydrogen throttling assembly 130 further comprises a temperature detector 135 disposed in the circulation chamber 111 to control the hydrogen purge condition. In this embodiment, the temperature detector 135 may be mounted on the inner wall of the pump housing 110 by a water-proof and corrosion-proof shield. The temperature detector 135 is electrically connected to the control module 160, the temperature detector 135 can detect the temperature in the circulation chamber 111, and feed a temperature signal back to the control module 160, and the control module 160 determines whether the hydrogen cylinder 133 supplies the purging hydrogen according to the temperature signal, so as to control the purging state of the purging hydrogen.
Based on the above embodiments, the control module 160 can control the opening of the adjusting valve 134 to determine whether the hydrogen cylinder 133 provides the purging hydrogen and the flow rate of the purging hydrogen.
The form of the throttle element 132 is not limited, and is exemplified below.
In one embodiment, the throttling element 132 is a pressure reducing valve disposed within the hydrogen purge port 114 or within the hydrogen line 131. In this embodiment, the throttling element 132 is a pressure reducing valve, the pressure reducing valve is electrically connected to the control assembly 160, and the pressure of the pressure reducing valve can be controlled under the action of the control assembly 160, so that the purging hydrogen in the hydrogen pipeline 131 can achieve the temperature-rising and ice-breaking effects through the pressure change when passing through the pressure reducing valve.
In another embodiment, the throttling element 132 is an orifice plate disposed in the hydrogen purge port 114 or in the hydrogen pipe 131. In this embodiment, the throttling element 132 is a hole plate, which is a plate with a plurality of throttling holes, and is fixed in the hydrogen purging port 114 or the hydrogen pipeline 131 through clamping, threaded connection and other manners, so that a predetermined pressure difference is achieved, different purging effects can be achieved by replacing different hole plates, and the purposes of heating and ice breaking are achieved.
In yet another embodiment, the throttling element 132 is a capillary tube having one end in communication with the hydrogen purge port 114 and the other end in communication with the hydrogen line 131. In this embodiment, the pipe diameter of capillary is less than the pipe diameter of hydrogen pipeline 131, when sweeping hydrogen from hydrogen pipeline 131 when the capillary, forms established pressure differential, through changing different capillaries or hydrogen pipeline 131, can realize different sweeping effects, reaches the purpose of rising temperature and breaking ice.
Of course, the throttling element 132 may take other configurations and is not limited to the above configuration.
Referring to fig. 1 to 4, in some possible embodiments, the recycle gas outlet 113, the recycle gas inlet 112 and the hydrogen purge port 114 are sequentially disposed on the pump housing 110. In the present embodiment, taking the installation and placement posture of the hydrogen circulation device 100 as an example, the pump housing 110 has opposite top, bottom and side portions, and the circulation gas outlet 113, the circulation gas inlet 112 and the hydrogen purge port 114 are sequentially provided in the side portion of the pump housing 110. The hydrogen purge port 114 is disposed adjacent to the recycle gas inlet 112, the recycle hydrogen and the purge hydrogen can be diffused in the same direction under the rotation action of the pump rotor 120, and the purge hydrogen after temperature rise can be diffused toward the recycle cavity 111 instead of being subjected to the return acting force, thereby improving the ice breaking effect.
The position of the hydrogen purge port 114 is not limited, and will be exemplified below.
Referring to fig. 1-4, in some possible embodiments, the hydrogen purge port 114 is provided at the bottom of the pump housing 110, or at the side of the pump housing 110 adjacent the bottom. In the present embodiment, taking the installation and placement posture of the hydrogen circulation device 100 as an example, the pump housing 110 has opposite top, bottom and side portions. Due to gravity factors, the phenomenon of standing water icing mainly occurs at the bottom of the pump housing 110 and the pump rotor 120 adjacent to the bottom of the pump housing 110, therefore, the hydrogen purging port 114 is arranged at the bottom of the pump housing 110 or at the side of the pump housing 110 adjacent to the bottom, and the hydrogen throttling component 130 performs purging correspondingly, so that the time for breaking ice can be reduced, the concentration and effectiveness of breaking ice can be improved, and the ice breaking effect can be improved.
Of course, it is understood that the hydrogen purge port 114 is disposed at any position of the pump housing 110 where the circulation cavity 111 is formed, and the purging throttling temperature increasing and ice breaking effects can be achieved, and is not limited to the above-mentioned exemplary positions.
Based on the same inventive concept, embodiments of the present invention further provide a hydrogen fuel cell system, including the hydrogen circulation device 100 according to any of the above embodiments. Of course, the hydrogen fuel cell system further includes a cell stack communicating with the hydrogen circulation device 100, and other functional accessories that perform power generation.
The hydrogen fuel cell system provided by the embodiment of the present invention employs the hydrogen circulation device 100 according to any of the above embodiments, and the technical effects of the two are the same, and are not described herein again.
It is to be understood that, in the foregoing embodiments, various parts may be freely combined or deleted to form different combination embodiments, and details of each combination embodiment are not described herein again, and after this description, it can be considered that each combination embodiment has been described in the present specification, and can support different combination embodiments.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A hydrogen circulation device, comprising:
the pump shell is provided with a circulating cavity and is provided with a circulating gas inlet, a circulating gas outlet and a hydrogen purging port which are communicated with the circulating cavity;
the pump rotor is arranged in the circulating cavity; and
the hydrogen throttling component is arranged outside the circulation cavity, the hydrogen purging port is communicated with the circulation cavity, and ice breaking is realized through hydrogen with throttling and temperature rising characteristics.
2. The hydrogen circulation device according to claim 1, wherein the hydrogen throttling assembly comprises:
one end of the hydrogen pipeline is communicated with the circulation cavity through the hydrogen purging port, and the other end of the hydrogen pipeline is communicated with hydrogen supply equipment; and
a throttling element cooperating with the hydrogen purge port or the hydrogen conduit.
3. The hydrogen circulation device according to claim 2, wherein the hydrogen throttle assembly further comprises hydrogen cylinders in communication with the other end of the hydrogen conduit, the hydrogen cylinders being disposed adjacent to the pump housing.
4. The hydrogen circulation device according to claim 2, wherein the hydrogen throttling assembly further comprises a regulating valve provided in the hydrogen pipeline to control the state of hydrogen purge.
5. The hydrogen-recycling apparatus of claim 2, wherein the hydrogen throttling assembly further comprises a temperature sensor disposed within the recycling chamber to control the state of the hydrogen purge.
6. The hydrogen circulation device according to any one of claims 2 to 5, wherein the throttling element is a pressure reducing valve provided in the hydrogen purge port or in the hydrogen pipeline.
7. The hydrogen circulation device according to any one of claims 2 to 5, wherein the throttling element is an orifice plate provided in the hydrogen purge port or in the hydrogen pipe.
8. The hydrogen circulation device according to any one of claims 2 to 5, wherein the throttling element is a capillary tube having one end communicating with the hydrogen purge port and the other end communicating with the hydrogen pipe.
9. The hydrogen circulation device according to claim 1, wherein the circulation gas outlet, the circulation gas inlet, and the hydrogen purge port are provided in this order on the pump housing.
10. The hydrogen circulation device according to claim 1 or 9, wherein the hydrogen purge port is provided in a bottom portion of the pump housing or in a side portion of the pump housing adjacent to the bottom portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110741411.6A CN113285092A (en) | 2021-06-30 | 2021-06-30 | Hydrogen circulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110741411.6A CN113285092A (en) | 2021-06-30 | 2021-06-30 | Hydrogen circulating device |
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| Publication Number | Publication Date |
|---|---|
| CN113285092A true CN113285092A (en) | 2021-08-20 |
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|---|---|---|---|
| CN202110741411.6A Withdrawn CN113285092A (en) | 2021-06-30 | 2021-06-30 | Hydrogen circulating device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114050289A (en) * | 2021-10-25 | 2022-02-15 | 国家电投集团氢能科技发展有限公司 | Purging device for fuel cell stack shell |
| CN116006484A (en) * | 2023-01-10 | 2023-04-25 | 北京伯肯节能科技股份有限公司 | Anti-icing and anti-blocking protection system of centrifugal hydrogen circulating pump |
-
2021
- 2021-06-30 CN CN202110741411.6A patent/CN113285092A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114050289A (en) * | 2021-10-25 | 2022-02-15 | 国家电投集团氢能科技发展有限公司 | Purging device for fuel cell stack shell |
| CN116006484A (en) * | 2023-01-10 | 2023-04-25 | 北京伯肯节能科技股份有限公司 | Anti-icing and anti-blocking protection system of centrifugal hydrogen circulating pump |
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