CN114278563B - Hydrogen circulating pump for fuel cell, hydrogen circulating system and working method of hydrogen circulating system - Google Patents
Hydrogen circulating pump for fuel cell, hydrogen circulating system and working method of hydrogen circulating system Download PDFInfo
- Publication number
- CN114278563B CN114278563B CN202111593555.8A CN202111593555A CN114278563B CN 114278563 B CN114278563 B CN 114278563B CN 202111593555 A CN202111593555 A CN 202111593555A CN 114278563 B CN114278563 B CN 114278563B
- Authority
- CN
- China
- Prior art keywords
- hydrogen
- fuel cell
- cavity
- new
- circulation pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000001257 hydrogen Substances 0.000 title claims abstract description 336
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 336
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 291
- 239000000446 fuel Substances 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000007789 gas Substances 0.000 claims description 65
- 150000002431 hydrogen Chemical class 0.000 claims description 51
- 238000005192 partition Methods 0.000 claims description 41
- 230000005540 biological transmission Effects 0.000 claims description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 238000001816 cooling Methods 0.000 claims description 27
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 7
- 239000012528 membrane Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007906 compression 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 invention provides a hydrogen circulating pump for a fuel cell, a hydrogen circulating system and a working method thereof. The invention can make the whole hydrogen circulating pump operate at a lower temperature, and the hydrogen circulating pump can work at a lower heat load due to the great reduction of the exhaust temperature of the hydrogen circulating pump, thereby improving the reliability and the service life of the hydrogen circulating pump.
Description
Technical Field
The invention belongs to the technical field of fuel cells, and particularly relates to a hydrogen circulating pump for a fuel cell, a hydrogen circulating system and a working method thereof.
Background
The hydrogen circulation system is one of the most important subsystems in the proton exchange membrane fuel cell, the schematic diagram of a typical fuel cell system is shown in fig. 1 in the attached drawings, hydrogen in a hydrogen bottle 28 enters a fuel cell stack anode 27 after passing through a pressure reducing valve 29 and reacts with oxygen in a fuel cell stack cathode 25 to generate water, electric energy is generated at the same time, however, the hydrogen entering the fuel cell stack anode 27 cannot completely react, the hydrogen which is not completely reacted increases the pressure through a hydrogen circulation pump 1 after passing through a water separator 30 and enters a fuel cell stack 24 again to react, and the hydrogen circulation system can not only improve the utilization rate of the hydrogen, but also improve the water balance in the fuel cell stack, avoid flooding and improve the working efficiency of the fuel cell stack.
The hydrogen circulation system in the prior art is shown in fig. 2 of the drawings, wherein most of the hydrogen circulation pumps used are roots pumps. The working principle of the Roots pump is shown in figure 3 of the drawings, a plurality of rotors of the Roots pump form a gas transmission cavity 4 with the shell in the running process, and the rotors continuously rotate to convey the hydrogen in the gas transmission cavity 4 from the circulating hydrogen inlet 2 to the exhaust port 3 so as to achieve the purpose of compressing the hydrogen. Since the Roots pump does not have an internal compression process, but increases the gas pressure by forced gas delivery, the gas delivery chamber 4 generates a great flow loss and pressure pulsation when suddenly exposed to the gas outlet 3. When the roots pump is used to compress hydrogen, since the molecular weight of hydrogen is small, hydrogen more easily leaks from the exhaust port 3 to the recycle hydrogen inlet 2 through gaps between the rotors and the housing, further reducing the efficiency of the roots pump. And the extremely high exhaust temperatures place the rotor, housing, bearings, etc. at very high operating temperatures. Thus, proper gaps between the rotors and the shell are not easy to ensure, and the reliability of other parts is reduced. Finally, the Roots pump has high exhaust temperature, poor reliability, short service life and large noise.
Disclosure of Invention
The invention provides a hydrogen circulating pump for a fuel cell, a hydrogen circulating system and a working method thereof, which are used for solving the problems of high exhaust temperature, poor reliability and short service life of the current hydrogen circulating pump.
The technical scheme adopted for solving the technical problems is as follows:
the cooling method of the hydrogen circulating pump for the fuel cell comprises the steps of: and a new hydrogen cavity is arranged on the exhaust port of the hydrogen circulating pump, and new hydrogen with high pressure and low temperature in a hydrogen source is introduced into the new hydrogen cavity, so that the hydrogen circulating pump is cooled.
The utility model provides a hydrogen circulating pump for fuel cell, includes the casing that one end set up the circulating hydrogen entry, be equipped with in the casing through power component drive and a plurality of rotors that mesh mutually, the rotor with the shells inner wall encloses into the gas transmission appearance chamber, the casing other end is equipped with the gas vent, still be equipped with the new hydrogen chamber of one end intercommunication new hydrogen entry in the casing, new hydrogen chamber other end intercommunication the gas vent.
Further, the new hydrogen cavity and the gas transmission cavity share a wall surface, and the other end of the new hydrogen cavity is communicated with the exhaust port through a pipeline arranged on the outer side of the shell.
Further, the new hydrogen cavity and the gas transmission cavity share a wall surface, and a cooling port is arranged between the new hydrogen cavity and the mixing cavity at the exhaust port.
Further, noise reduction holes are formed in the shared wall surface.
Further, the new hydrogen cavity and the mixing cavity are separated by a first partition plate arranged on the inner wall of the shell, and a certain distance is reserved between the first partition plate and the shared wall surface to form the cooling port.
Further, the new hydrogen cavity is formed by an exhaust cover arranged on the top surface of the shell, a new hydrogen inlet is formed in one end of the exhaust cover, a mixed hydrogen outlet is formed in the other end of the exhaust cover, a first partition plate is fixed in the exhaust cover, a certain distance is reserved between the bottom end of the first partition plate and the top surface of the shell, a cooling port is formed, the inner cavity of the exhaust cover is divided into a new hydrogen cavity and a mixed cavity by the first partition plate, the new hydrogen cavity and the top surface of the shell share a wall surface, the mixed cavity is communicated with the exhaust port, the new hydrogen inlet is communicated with the new hydrogen cavity, and the mixed hydrogen outlet is communicated with the mixed cavity.
Further, the exhaust cover is fixed in corresponding position department of casing top surface through the exhaust flange of looks adaptation, exhaust flange install in corresponding position department of casing top surface, exhaust cover bottom with exhaust flange top fixed connection, exhaust flange internal fixation have with the second partition board that first partition board is just right, second partition board bottom with the casing top surface contact, first partition board bottom with certain interval is left on second partition board top and the cooling mouth is formed.
Further, the blades of the rotor are torsional blades, the number of the blades is three, the first partition plate and the second partition plate are vertically arranged, and the power component is a circulating pump motor.
The hydrogen circulation system for the fuel cell comprises the hydrogen circulation pump, a hydrogen bottle, a fuel cell stack and a water separator, wherein the anode output end of the fuel cell stack is connected with the input end of the water separator, the gas outlet of the water separator is connected with the circulating hydrogen inlet of the hydrogen circulation pump, the output end of the hydrogen bottle is connected with the new hydrogen inlet of the hydrogen circulation pump, and the exhaust port of the hydrogen circulation pump is connected with the anode input end of the fuel cell stack.
The hydrogen circulation system for the fuel cell comprises the hydrogen circulation pump, a hydrogen bottle, a fuel cell stack and a water separator, wherein the output end of the hydrogen bottle is connected with the input end of an anode of the fuel cell stack, the output end of the anode of the fuel cell stack is connected with the input end of the water separator, the gas outlet of the water separator is connected with the circulating hydrogen inlet of the hydrogen circulation pump, the output end of the hydrogen bottle is connected with the new hydrogen inlet of the hydrogen circulation pump, and the exhaust port of the hydrogen circulation pump is connected with the input end of the anode of the fuel cell stack.
A method of operating a hydrogen circulation system for a fuel cell, comprising the steps of:
s1, enabling hydrogen in the hydrogen bottle to enter the fuel cell stack anode and react with oxygen entering the fuel cell stack cathode to generate water, enabling circulating hydrogen which is not completely reacted in the fuel cell stack anode to enter the shell from the circulating hydrogen inlet after passing through the water separator, enabling the two rotors to continuously rotate, and enabling the circulating hydrogen in the gas transmission cavity to be conveyed from the circulating hydrogen inlet to the gas exhaust port to obtain compressed hydrogen;
s2, new hydrogen with high pressure and low temperature in the hydrogen bottle enters the new hydrogen cavity from the new hydrogen inlet and is mixed with the compressed hydrogen at the exhaust port to obtain mixed hydrogen, and the hydrogen circulating pump is cooled;
and S3, discharging the mixed hydrogen and entering the anode of the fuel cell stack, and reacting with oxygen entering the cathode of the fuel cell stack again.
Further, in step S2, the high-pressure low-temperature new hydrogen in the hydrogen bottle enters the new hydrogen cavity from the new hydrogen inlet, the low-temperature new hydrogen in the new hydrogen cavity directly contacts the wall surface of the shell to cool the shell, meanwhile, the low-temperature new hydrogen in the new hydrogen cavity also enters the mixing cavity through the cooling port and is mixed with the compressed hydrogen at the exhaust port to obtain mixed hydrogen, the compressed hydrogen is cooled, and meanwhile, the high-pressure new hydrogen in the new hydrogen cavity also enters the gas transmission cavity through the noise reduction hole on the shared wall surface to improve the hydrogen pressure in the gas transmission cavity.
Compared with the prior art, the invention has the beneficial effects that:
in order to reduce the working temperature of the current hydrogen circulating pump, the invention provides a hydrogen circulating pump for a fuel cell, which comprises a shell, wherein one end of the shell is provided with a circulating hydrogen inlet, a plurality of rotors which are driven by a power part and meshed with each other are arranged in the shell, the rotors and the inner wall of the shell enclose a gas transmission cavity, the other end of the shell is provided with an exhaust port, a new hydrogen cavity, one end of which is communicated with a new hydrogen inlet, is also arranged in the shell, and the other end of the new hydrogen cavity is communicated with the exhaust port.
In the invention, the new hydrogen cavity is formed by the exhaust cover arranged on the top surface of the shell, one end of the exhaust cover is provided with the new hydrogen inlet, the other end of the exhaust cover is provided with the mixed hydrogen outlet, a first partition plate is fixed in the exhaust cover, the bottom end of the first partition plate and the top surface of the shell are reserved with a certain distance to form a cooling port, the first partition plate divides the inner cavity of the exhaust cover into the new hydrogen cavity and a mixed cavity, the new hydrogen cavity and the top surface of the shell share a wall surface, the mixed cavity is communicated with the exhaust port, the new hydrogen inlet is communicated with the new hydrogen cavity, and the mixed hydrogen outlet is communicated with the mixed cavity.
In order to reduce the exhaust pressure pulsation of the current hydrogen circulating pump, the common wall surface of the new hydrogen cavity and the gas transmission cavity is provided with the noise reduction hole, so that high-pressure new hydrogen in the new hydrogen cavity also enters the gas transmission cavity through the noise reduction hole on the common wall surface, the pressure of the hydrogen in the gas transmission cavity can be gradually increased to be consistent with the pressure of the compressed hydrogen, and the gas transmission cavity has almost no pressure fluctuation when being exposed to an exhaust port, so that the exhaust noise can be effectively reduced.
Drawings
FIG. 1 is a schematic diagram of a fuel cell system in the background art;
FIG. 2 is a schematic diagram of a prior art hydrogen circulation system;
FIG. 3 is a schematic diagram of the operation of a hydrogen circulation pump, namely a Roots pump, according to the prior art;
FIG. 4 is a schematic diagram of a hydrogen circulation system for a fuel cell according to the present invention;
fig. 5 is a schematic diagram showing the operation of a hydrogen circulation pump for a fuel cell according to one embodiment of the present invention;
fig. 6 is a schematic diagram showing the operation of another hydrogen circulation pump for a fuel cell according to the present invention;
fig. 7 is a schematic plan view of one of the hydrogen circulation pumps for fuel cells of embodiment 1;
fig. 8 is a schematic view showing another planar structure of the hydrogen circulation pump for a fuel cell of embodiment 1;
fig. 9 is a schematic plan view of a hydrogen circulation pump for a fuel cell of example 2.
Fig. 10 is a schematic perspective view of a hydrogen circulation pump for a fuel cell of example 3;
FIG. 11 is a schematic perspective view of another direction of FIG. 10;
FIG. 12 is a schematic view of the partial cross-sectional perspective structure of FIG. 10;
FIG. 13 is a schematic view of the alternate partially cut-away perspective view of FIG. 10;
FIG. 14 is a schematic view of a plurality of rotors according to the present invention;
fig. 15 is a left cross-sectional structural schematic view of fig. 10.
The reference numerals in the drawings illustrate: 1. the hydrogen circulation pump, 2, a circulating hydrogen inlet, 3, an exhaust port, 4, a gas transmission containing cavity, 5, a shell, 6, a rotor, 7, an exhaust cover, 8, a new hydrogen inlet, 9, a mixed hydrogen outlet, 10, a pipeline, 11, a first partition plate, 12, a cooling port, 13, a new hydrogen cavity, 14, a mixed cavity, 15, a shared wall surface, 16, a noise reduction hole, 17, an exhaust flange, 18, a second partition plate, 19, an air compressor motor, 20, an air compressor, 21, an air filter, 22, an intercooler, 23, a humidifier, 24, a fuel cell stack, 25, a fuel cell stack cathode, 26, a proton exchange membrane, 27, a fuel cell stack anode, 28, a hydrogen bottle, 29, a pressure reducing valve, 30, a water separator, 31, a valve, 32, a tail row, 33, a water tank, 34, a circulating pump motor, 35, circulating hydrogen, 36, compressed hydrogen, 37, new hydrogen, 38 and mixed hydrogen.
Detailed Description
A cooling method of a hydrogen circulating pump for a fuel cell comprises a hydrogen circulating pump 1 and a hydrogen source, wherein a new hydrogen cavity 13 is arranged on an exhaust port 3 of the hydrogen circulating pump 1, and new hydrogen 37 with high pressure and low temperature in the hydrogen source is introduced into the new hydrogen cavity 13 to realize cooling of the hydrogen circulating pump 1.
Example 1
As shown in fig. 5 and 7, a hydrogen circulation pump for a fuel cell comprises a housing 5 with a circulating hydrogen inlet 2 at one end, wherein a plurality of rotors 6 which are driven by power components and meshed are arranged in the housing 5, the rotors 6 and the inner wall of the housing 5 enclose a gas transmission cavity 4, the other end of the housing 5 is provided with a gas outlet 3, a new hydrogen cavity 13 with one end communicated with the new hydrogen inlet 8 is also arranged in the housing 5, the other end of the new hydrogen cavity 13 is communicated with the gas outlet 3, the new hydrogen cavity 13 and the gas transmission cavity 4 share a wall surface 15, the other end of the new hydrogen cavity 13 is communicated with the gas outlet 3 through a pipeline 10 arranged at the outer side of the housing 5, so that high-pressure low-temperature new hydrogen 37 in a hydrogen bottle 28 enters the new hydrogen cavity 13 from the new hydrogen inlet 8, the purpose of cooling the hydrogen circulation pump is achieved through the shared wall surface 15, the reliability of the operation of mechanical parts of the hydrogen circulation pump is ensured, and low Wen Xin hydrogen 37 in the new hydrogen cavity 13 enters the gas outlet 3 through the pipeline 10 and is mixed with compressed hydrogen 36 at the gas outlet 3 to obtain mixed hydrogen 38, so as to achieve the purpose of cooling the compressed hydrogen 36.
As shown in fig. 6 and 8, the common wall 15 is provided with a noise reduction hole 16, so that the high-pressure new hydrogen 37 in the new hydrogen chamber 13 also enters the gas transmission cavity 4 through the noise reduction hole 16 on the common wall 15, so that the pressure of the hydrogen in the gas transmission cavity 4 can be gradually increased to be consistent with the pressure of the compressed hydrogen, and the gas transmission cavity 4 has almost no pressure fluctuation when being exposed to an exhaust port, so that the exhaust noise can be effectively reduced.
Example 2
As shown in fig. 6 and 9, a hydrogen circulation pump for a fuel cell comprises a housing 5 with a circulating hydrogen inlet 2 at one end, wherein a plurality of rotors 6 which are driven by power components and meshed are arranged in the housing 5, the rotors 6 and the inner wall of the housing 5 enclose a gas transmission cavity 4, the other end of the housing 5 is provided with a gas outlet 3, a new hydrogen cavity 13 with one end communicated with the new hydrogen inlet 8 is also arranged in the housing 5, the other end of the new hydrogen cavity 13 is communicated with the gas outlet 3, the new hydrogen cavity 13 and the gas transmission cavity 4 share a wall surface 15, a noise reduction hole 16 is arranged on the shared wall surface 15, a cooling port 12 is arranged between the new hydrogen cavity 13 and the gas outlet 3, so that new hydrogen 37 with high pressure and low temperature in a hydrogen bottle 28 enters the new hydrogen cavity 13 from the new hydrogen inlet 8, and the low Wen Xin hydrogen 37 in the new hydrogen cavity 13 enters the mixing cavity 14 through the cooling port 12 and is mixed with compressed hydrogen 36 to obtain mixed hydrogen 38, the purpose of cooling the hydrogen circulation pump is achieved, and the high-pressure new hydrogen 37 in the new hydrogen cavity 13 also enters the gas transmission cavity 4 through the noise reduction cavity 16 on the shared wall surface 15, and the pressure of the new hydrogen cavity 4 can be gradually reduced to the pressure of the gas transmission cavity 4 when the pressure is nearly identical to the pressure of the gas transmission cavity is not exposed to the gas outlet.
Wherein, the new hydrogen chamber 13 and the mixing chamber 14 are separated by a first partition plate 11 arranged on the inner wall of the shell 5, and a certain distance is reserved between the first partition plate 11 and the shared wall surface 15 to form a cooling port 12.
Example 3
As shown in fig. 10-15, a hydrogen circulation pump for a fuel cell comprises a housing 5 with a circulating hydrogen inlet 2 at one end, a plurality of rotors 6 driven by power components and meshed with each other are arranged in the housing 5, the blades of the rotors 6 are twisted blades and the number of the blades is three, the rotors 6 and the inner wall of the housing 5 enclose a gas delivery cavity 4, the other end of the housing 5 is provided with a gas outlet 3, a new hydrogen cavity 13 with one end communicated with the new hydrogen inlet 8 is further arranged in the housing 5, the other end of the new hydrogen cavity 13 is communicated with the gas outlet 3, a cooling port 12 is arranged between the new hydrogen cavity 13 and a mixing cavity 14 at the gas outlet 3, wherein the new hydrogen cavity 13 is formed by an exhaust cover 7 arranged on the top surface of the housing 5, one end of the exhaust cover 7 is provided with a new hydrogen inlet 8, the other end of the exhaust cover 9 is provided with a mixed hydrogen outlet 9, a first partition plate 11 is fixed in the exhaust cover 7, a certain space is reserved between the bottom end of the first partition plate 11 and the top surface of the housing 5 to form the cooling port 12, the first partition plate 11 divides the inner cavity of the exhaust cover 7 into a new hydrogen cavity 13 and a mixing cavity 14, the new hydrogen cavity 13 and a shared wall 15 on the top surface of the housing 5, a noise reduction hole 16 is arranged on the shared wall 15, and the shared wall surface 16 is communicated with the mixed cavity 14.
As shown in fig. 10, 11, 12, 13 and 15, the exhaust cover 7 is fixed at a corresponding position on the top surface of the shell 5 through an adaptive exhaust flange 17, the exhaust flange 17 is installed at a corresponding position on the top surface of the shell 5, the bottom end of the exhaust cover 7 is fixedly connected with the top end of the exhaust flange 17, a second partition plate 18 opposite to the first partition plate 11 is fixed in the exhaust flange 17, the bottom end of the second partition plate 18 contacts with the top surface of the shell 5, a certain distance is reserved between the bottom end of the first partition plate 11 and the top end of the second partition plate 18, a cooling port 12 is formed, and the first partition plate 11 and the second partition plate 18 are vertically arranged.
As shown in fig. 4, a hydrogen circulation system for a fuel cell comprises a hydrogen circulation pump 1 of embodiments 1, 2 and 3, a hydrogen bottle 28, a fuel cell stack 24 and a water separator 30, wherein the output end of the anode 27 of the fuel cell stack is connected with the input end of the water separator 30, the gas outlet of the water separator 30 is connected with the circulating hydrogen inlet 2 of the hydrogen circulation pump 1, the output end of the hydrogen bottle 28 is connected with the new hydrogen inlet 8 of the hydrogen circulation pump 1 through a pressure reducing valve 29, and the exhaust port 3 of the hydrogen circulation pump 1 is connected with the input end of the anode 27 of the fuel cell stack.
The hydrogen circulation system for the fuel cell comprises a hydrogen circulation pump 1, a hydrogen bottle 28, a fuel cell stack 24 and a water separator 30, wherein the output end of the hydrogen bottle 28 is connected with the input end of a fuel cell stack anode 27, the output end of the fuel cell stack anode 27 is connected with the input end of the water separator 30, the gas outlet of the water separator 30 is connected with a circulating hydrogen inlet 2 of the hydrogen circulation pump 1, the output end of the hydrogen bottle 28 is also connected with a new hydrogen inlet 8 of the hydrogen circulation pump 1, an exhaust port 3 of the hydrogen circulation pump 1 is connected with the input end of the fuel cell stack anode 27, part of new hydrogen 37 in the hydrogen bottle 28 in the hydrogen circulation system does not enter a circulation branch for mixing, and the part of the unmixed new hydrogen 37 is mixed with mixed hydrogen 38 again and then enters the fuel cell stack anode 27.
As shown in fig. 4, a method for operating a hydrogen circulation system for a fuel cell includes the steps of:
s1, hydrogen in a hydrogen bottle 28 enters a fuel cell stack anode 27 and reacts with oxygen entering a fuel cell stack cathode 25 to generate water, circulating hydrogen 35 which is not fully reacted in the fuel cell stack anode 27 passes through a water separator 30 and then enters a shell 5 from a circulating hydrogen inlet 2, a plurality of rotors 6 continuously rotate, and the circulating hydrogen 35 in a gas transmission cavity 4 is conveyed from the circulating hydrogen inlet 2 to a gas outlet 3 to obtain compressed hydrogen 36;
s2, new hydrogen 37 with high pressure and low temperature in a hydrogen bottle 28 enters a new hydrogen cavity 13 from a new hydrogen inlet 8, low Wen Xin hydrogen 37 in the new hydrogen cavity 13 is directly contacted with the wall surface of a shell 5, the shell 5 is cooled, meanwhile, low Wen Xin hydrogen 37 in the new hydrogen cavity 13 also enters a mixing cavity 14 through a cooling port 12 and is mixed with compressed hydrogen 36 at an exhaust port 3 to obtain mixed hydrogen 38, the compressed hydrogen 36 is cooled, meanwhile, high-pressure new hydrogen 37 in the new hydrogen cavity 13 also enters a gas transmission cavity 4 through a noise reduction hole 16 on a shared wall surface 15, and then the hydrogen pressure in the gas transmission cavity 4 is improved, so that the hydrogen pressure in the gas transmission cavity 4 is consistent with the pressure of the compressed hydrogen;
and S3, discharging the mixed hydrogen 38 and entering the fuel cell stack anode 27, and reacting with oxygen entering the fuel cell stack cathode 25 again.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (10)
1. A hydrogen circulation pump for a fuel cell, characterized in that: the device comprises a shell (5) with one end provided with a circulating hydrogen inlet (2), wherein a plurality of rotors (6) which are driven by a power component and meshed with each other are arranged in the shell (5), the rotors (6) and the inner wall of the shell (5) enclose a gas transmission cavity (4), the other end of the shell (5) is provided with a gas outlet (3), a new hydrogen cavity (13) with one end communicated with a new hydrogen inlet (8) is further arranged in the shell (5), the new hydrogen cavity (13) and the gas transmission cavity (4) share a wall surface (15), a cooling port (12) is arranged between the new hydrogen cavity (13) and a mixing cavity (14) at the gas outlet (3), the new hydrogen cavity (13) is separated from the mixing cavity (14) by a first partition plate (11), the cooling port (12) is positioned at a position close to the first partition plate (11), and the other end of the new hydrogen cavity (13) is communicated with the gas outlet (3); cooling of the hydrogen circulation pump (1) is achieved by introducing new hydrogen (37) in a hydrogen source into the new hydrogen chamber (13).
2. A hydrogen circulation pump for a fuel cell according to claim 1, wherein: noise reduction holes (16) are formed in the common wall surface (15).
3. A hydrogen circulation pump for a fuel cell according to claim 1, wherein: the novel hydrogen chamber (13) and the mixing chamber (14) are separated by a first partition plate (11) arranged on the inner wall of the shell (5), and a certain distance is reserved between the first partition plate (11) and the shared wall surface (15) to form the cooling port (12).
4. A hydrogen circulation pump for a fuel cell according to claim 1, wherein: new hydrogen chamber (13) through set up in exhaust lid (7) on casing (5) top surface form, exhaust lid (7) one end is equipped with new hydrogen entry (8), and the other end is equipped with mixed hydrogen export (9), exhaust lid (7) internal fixation has first division board (11), first division board (11) bottom with casing (5) top surface leaves certain interval and forms cooling port (12), first division board (11) will the inner chamber of exhaust lid (7) divide into new hydrogen chamber (13) and mixed chamber (14), new hydrogen chamber (13) with casing (5) top surface sharing wall (15), mixed chamber (14) intercommunication gas vent (3), new hydrogen entry (8) intercommunication new hydrogen chamber (13), mixed hydrogen export (9) intercommunication mixed chamber (14).
5. A hydrogen circulation pump for a fuel cell according to claim 4, wherein: the exhaust cover (7) is fixed in through exhaust flange (17) of looks adaptation the corresponding position department of casing (5) top surface, exhaust flange (17) install in the corresponding position department of casing (5) top surface, exhaust cover (7) bottom with exhaust flange (17) top fixed connection, exhaust flange (17) internal fixation have with second partition board (18) just right to first partition board (11), second partition board (18) bottom with casing (5) top surface contact, first partition board (11) bottom with second partition board (18) top leaves certain interval and forms cooling mouth (12).
6. A hydrogen circulation pump for a fuel cell according to claim 5, wherein: the blades of the rotor (6) are torsional blades, the number of the blades is three, and the first partition plate (11) and the second partition plate (18) are vertically arranged.
7. A hydrogen circulation system for a fuel cell, comprising a hydrogen circulation pump (1) according to any one of claims 1 to 6, characterized in that: still include hydrogen bottle (28), fuel pile (24) and water knockout drum (30), fuel pile positive pole (27) output with water knockout drum (30) input connection, the gas outlet of water knockout drum (30) with circulation hydrogen entry (2) of hydrogen circulation pump (1) are connected, hydrogen bottle (28) output with new hydrogen entry (8) of hydrogen circulation pump (1) are connected, gas vent (3) of hydrogen circulation pump (1) with fuel pile positive pole (27) input connection.
8. A hydrogen circulation system for a fuel cell, comprising a hydrogen circulation pump (1) according to any one of claims 1 to 6, characterized in that: the hydrogen circulation pump comprises a hydrogen circulation pump body, and is characterized by further comprising a hydrogen bottle (28), a fuel cell stack (24) and a water separator (30), wherein the output end of the hydrogen bottle (28) is connected with the input end of the fuel cell stack anode (27), the output end of the fuel cell stack anode (27) is connected with the input end of the water separator (30), the gas outlet of the water separator (30) is connected with a circulating hydrogen inlet (2) of the hydrogen circulation pump (1), the output end of the hydrogen bottle (28) is also connected with a new hydrogen inlet (8) of the hydrogen circulation pump (1), and an exhaust port (3) of the hydrogen circulation pump (1) is connected with the input end of the fuel cell stack anode (27).
9. The method for operating a hydrogen circulation system for a fuel cell according to claim 8, characterized by comprising the steps of:
s1, enabling hydrogen in the hydrogen bottle (28) to enter the fuel cell stack anode (27) and react with oxygen entering the fuel cell stack cathode (25) to generate water, enabling circulating hydrogen (35) which is not fully reacted in the fuel cell stack anode (27) to enter the shell (5) from the circulating hydrogen inlet (2) after passing through the water separator (30), enabling the two rotors (6) to rotate continuously, and conveying the circulating hydrogen (35) in the gas conveying accommodating cavity (4) from the circulating hydrogen inlet (2) to the exhaust port (3) to obtain compressed hydrogen (36);
s2, new hydrogen (37) with high pressure and low temperature in the hydrogen bottle (28) enters the new hydrogen cavity (13) from the new hydrogen inlet (8) and is mixed with compressed hydrogen (36) at the exhaust port (3) to obtain mixed hydrogen (38), the hydrogen circulating pump (1) is cooled, particularly, new hydrogen (37) with high pressure and low temperature in the hydrogen bottle (28) enters the new hydrogen cavity (13) from the new hydrogen inlet (8), the low Wen Xin hydrogen (37) in the new hydrogen cavity (13) is directly contacted with the wall surface of the shell (5) to cool the shell (5), meanwhile, the low Wen Xin hydrogen (37) in the new hydrogen cavity (13) also enters the mixed cavity (14) through a cooling port (12) close to the first partition plate (11) and is mixed with the compressed hydrogen (36) at the exhaust port (3) to obtain mixed hydrogen (38), and the compressed hydrogen (36) is cooled;
s3, discharging the mixed hydrogen (38) and entering the fuel cell stack anode (27), and reacting with oxygen entering the fuel cell stack cathode (25) again.
10. The method for operating a hydrogen circulation system for a fuel cell according to claim 9, wherein: step S2 further comprises the step that high-pressure new hydrogen (37) in the new hydrogen cavity (13) enters the gas transmission cavity (4) through the noise reduction holes (16) on the shared wall surface (15) to improve the hydrogen pressure in the gas transmission cavity (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111593555.8A CN114278563B (en) | 2021-12-23 | 2021-12-23 | Hydrogen circulating pump for fuel cell, hydrogen circulating system and working method of hydrogen circulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111593555.8A CN114278563B (en) | 2021-12-23 | 2021-12-23 | Hydrogen circulating pump for fuel cell, hydrogen circulating system and working method of hydrogen circulating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114278563A CN114278563A (en) | 2022-04-05 |
| CN114278563B true CN114278563B (en) | 2024-01-19 |
Family
ID=80875125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111593555.8A Active CN114278563B (en) | 2021-12-23 | 2021-12-23 | Hydrogen circulating pump for fuel cell, hydrogen circulating system and working method of hydrogen circulating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114278563B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114876794A (en) * | 2022-04-28 | 2022-08-09 | 烟台东德实业有限公司 | Rotating speed self-adaptive hydrogen circulating pump |
| CN114810591A (en) * | 2022-04-28 | 2022-07-29 | 烟台东德实业有限公司 | Low-temperature-rise low-noise hydrogen circulating pump |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003184767A (en) * | 2001-12-14 | 2003-07-03 | Nippon Soken Inc | Screw compressor |
| JP2006019124A (en) * | 2004-07-01 | 2006-01-19 | Nissan Motor Co Ltd | Fuel cell system |
| CN101010824A (en) * | 2004-12-24 | 2007-08-01 | 株式会社丰田自动织机 | Fuel cell system |
| CN102459908A (en) * | 2009-06-10 | 2012-05-16 | 丰田自动车株式会社 | Fluid compressor and fuel cell vehicle |
| CN102635552A (en) * | 2011-02-08 | 2012-08-15 | 株式会社丰田自动织机 | Compressor |
| CN207426025U (en) * | 2018-01-31 | 2018-05-29 | 安徽明天氢能科技股份有限公司 | A kind of hydrogen gas circulating system for fuel cell system |
| CN111029619A (en) * | 2019-11-27 | 2020-04-17 | 中国第一汽车股份有限公司 | Fuel cell hydrogen circulation system, hydrogen loop control method and hydrogen discharge and drainage method |
| CN210371178U (en) * | 2019-07-15 | 2020-04-21 | 烟台东德实业有限公司 | Gas inlet and outlet structure of Roots type hydrogen circulating pump |
| CN111322228A (en) * | 2018-11-28 | 2020-06-23 | 株式会社丰田自动织机 | Hydrogen circulation pump for fuel cell system and fuel cell system |
| CN111613814A (en) * | 2019-02-26 | 2020-09-01 | 株式会社丰田自动织机 | Fuel cell system and hydrogen circulation pump |
| CN113629273A (en) * | 2021-09-02 | 2021-11-09 | 山东凯格瑞森能源科技有限公司 | Series hydrogen circulation system applied to hydrogen fuel cell |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3543733B2 (en) * | 2000-05-29 | 2004-07-21 | 日産自動車株式会社 | Resholm compressor for fuel cells |
-
2021
- 2021-12-23 CN CN202111593555.8A patent/CN114278563B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003184767A (en) * | 2001-12-14 | 2003-07-03 | Nippon Soken Inc | Screw compressor |
| JP2006019124A (en) * | 2004-07-01 | 2006-01-19 | Nissan Motor Co Ltd | Fuel cell system |
| CN101010824A (en) * | 2004-12-24 | 2007-08-01 | 株式会社丰田自动织机 | Fuel cell system |
| CN102459908A (en) * | 2009-06-10 | 2012-05-16 | 丰田自动车株式会社 | Fluid compressor and fuel cell vehicle |
| CN102635552A (en) * | 2011-02-08 | 2012-08-15 | 株式会社丰田自动织机 | Compressor |
| CN207426025U (en) * | 2018-01-31 | 2018-05-29 | 安徽明天氢能科技股份有限公司 | A kind of hydrogen gas circulating system for fuel cell system |
| CN111322228A (en) * | 2018-11-28 | 2020-06-23 | 株式会社丰田自动织机 | Hydrogen circulation pump for fuel cell system and fuel cell system |
| CN111613814A (en) * | 2019-02-26 | 2020-09-01 | 株式会社丰田自动织机 | Fuel cell system and hydrogen circulation pump |
| CN210371178U (en) * | 2019-07-15 | 2020-04-21 | 烟台东德实业有限公司 | Gas inlet and outlet structure of Roots type hydrogen circulating pump |
| CN111029619A (en) * | 2019-11-27 | 2020-04-17 | 中国第一汽车股份有限公司 | Fuel cell hydrogen circulation system, hydrogen loop control method and hydrogen discharge and drainage method |
| CN113629273A (en) * | 2021-09-02 | 2021-11-09 | 山东凯格瑞森能源科技有限公司 | Series hydrogen circulation system applied to hydrogen fuel cell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114278563A (en) | 2022-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114278563B (en) | Hydrogen circulating pump for fuel cell, hydrogen circulating system and working method of hydrogen circulating system | |
| CN112635793B (en) | Double-stack double-circulation fuel cell system | |
| CN204793044U (en) | Fuel cell hydrogen recovery system | |
| CN112909309B (en) | Multi-stack fuel cell system with constant-pressure homogeneous supply distributor | |
| WO2022077541A1 (en) | Air compression device, multi-stage air compression device and hydrogen fuel cell | |
| CN113629273A (en) | Series hydrogen circulation system applied to hydrogen fuel cell | |
| CN113178592B (en) | Proton exchange membrane fuel cell | |
| CN106887614B (en) | Air supply device for fuel cell | |
| CN107394235B (en) | Fuel cell auxiliary system | |
| US20070217939A1 (en) | Gas-compression module for a fuel cell | |
| CN100379070C (en) | A fuel battery hydrogen gas cyclic utilization device adapting for low-pressure operation | |
| CN116435546A (en) | Fuel cell air supply system based on compression and expansion integrated machine and control method | |
| CN109273742B (en) | Air supply system of methanol-water reforming hydrogen production fuel cell | |
| CN217440320U (en) | Cooling device of fuel cell air compressor | |
| CN114899450A (en) | Fuel cell system with gas turbine supercharger | |
| CN215815958U (en) | Series hydrogen circulation system applied to hydrogen fuel cell | |
| CN212209662U (en) | Air double-parallel air inlet device of high-power hydrogen fuel cell engine | |
| CN218160482U (en) | Anode circulating pump assembly for fuel cell system and fuel cell system | |
| CN209312917U (en) | Air supply system for high power fuel cell | |
| CN215418252U (en) | Fuel cell humidification system | |
| CN216741947U (en) | Low-pressure pulse supercharger | |
| CN216213570U (en) | Intercooler with air inlet bypass for fuel cell | |
| CN215771220U (en) | Closed air-cooled hydrogen fuel cell system | |
| CN217682141U (en) | Air compressor and hydrogen energy system | |
| CN216199265U (en) | Air compressor cooling unit, air compressor with energy recovery function and hydrogen fuel cell system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |