CN113144758A - Gas-water separator for fuel cell engine hydrogen system - Google Patents
Gas-water separator for fuel cell engine hydrogen system Download PDFInfo
- Publication number
- CN113144758A CN113144758A CN202110612486.4A CN202110612486A CN113144758A CN 113144758 A CN113144758 A CN 113144758A CN 202110612486 A CN202110612486 A CN 202110612486A CN 113144758 A CN113144758 A CN 113144758A
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- flow guide
- gas
- fuel cell
- water separator
- pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
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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
- H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
- H01M8/04156—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal
- H01M8/04164—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal by condensers, gas-liquid separators or filters
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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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a gas-water separator for a hydrogen system of a fuel cell engine, which comprises a shell and a fluid director arranged in the shell, wherein the fluid director comprises a vent pipe, a flow guide pipe and a flow guide block; the flow guide blocks are arranged spirally around the vent pipe, and a flow guide channel is formed between every two adjacent flow guide blocks; a movement space for the mixed hydrogen to do centrifugal movement is formed between the flow guide pipe and the inner wall of the shell; the outer surface of the flow guide block is provided with an external thread, and the inner wall of the shell is provided with an internal thread matched with the external thread. In the invention, the flow guide block is directly screwed on the inner wall of the shell to realize the fixation of the flow guide. The fluid director in the invention is screwed on the inner wall of the shell, the fixing mode is simple in structure and convenient to operate, and the threaded connection can ensure the stability of the fluid director, so that the smooth operation of the separation operation is ensured.
Description
Technical Field
The invention relates to the field of hydrogen systems of fuel cell engines, in particular to a gas-water separator for a hydrogen system of a fuel cell engine.
Background
In fuel cell engine systems, it is generally desirable to pass hydrogen to the anode side of the fuel cell at a stoichiometric ratio greater than 1. The mixed gas after the reaction still contains a large amount of hydrogen. In order to reduce the cost and improve the utilization rate of hydrogen, a hydrogen circulating pump is generally connected in parallel in front of and behind the galvanic pile, and the hydrogen circulating pump is used for hydrogen circulation. And the unreacted hydrogen forms a circulating gas circuit under the action of the hydrogen circulating pump. Liquid water is present in the circulating gas circuit, and is produced by the fuel cell stack. If the generated liquid water cannot be discharged in time, anode flooding can be caused, the performance of the fuel cell and the circulating pump is reduced, and the engine can be suddenly stopped in severe cases. Therefore, the person skilled in the art adds a gas-water separator between the outlet of the fuel cell stack and the hydrogen circulating pump. The gas-water separator is used for separating liquid water in the mixed hydrogen.
The common gas-water separator comprises a cyclone gas-water separator, and the cyclone gas-water separator mainly comprises a shell and a fluid director arranged in the shell. The flow guider is used for enabling the mixed hydrogen to do spiral downward centrifugal motion along the inner wall of the shell. When the mixed hydrogen makes centrifugal motion, liquid water in the mixed hydrogen can continuously move downwards under the action of gravity, and the hydrogen can move upwards into the vent pipe through the inner cavity of the flow guide pipe and then is discharged from the exhaust port.
However, the fixing mode of the fluid director in the existing cyclone-type gas-water separator is complex, and the stability of the fluid director cannot be ensured.
Therefore, how to simplify the fixing manner of the fluid director and improve the stability of the fluid director is a critical problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
The invention aims to simplify the fixing mode of the fluid director and improve the stability of the fluid director. In order to realize the purpose, the following technical scheme is provided:
a gas-water separator for a hydrogen system of a fuel cell engine comprises a shell and a fluid director arranged in the shell, wherein the fluid director comprises a vent pipe, a guide pipe and a guide block, the vent pipe is positioned above the guide pipe, and the vent pipe is communicated with the guide pipe;
the guide blocks are arranged on the upper end surface of the guide pipe, the number of the guide blocks is multiple, the guide blocks are spirally arranged around the vent pipe, and a guide channel is formed between every two adjacent guide blocks;
and a movement space for allowing the mixed hydrogen to do centrifugal movement is formed between the flow guide pipe and the inner wall of the shell, and the upper port of the vent pipe is used for discharging the hydrogen.
Preferably, in the radial direction, the draft tube is inwardly constricted relative to the deflector block.
Preferably, the flow guide block is of an arc-shaped structure.
Preferably, the bottom of the housing is provided with a drain solenoid valve.
Preferably, the drain solenoid valve has a self-heating function.
Preferably, heating means are provided on the outer surface of the housing.
Preferably, the heating means is a PTC heating plate.
Preferably, the exhaust pipe is inserted into the housing along a radial direction of the housing, and an upper end of the vent pipe is inserted into the exhaust pipe.
Preferably, the casing with blast pipe complex jack department is provided with sealed the pad, be provided with on the surface of blast pipe and encircle protruding, the ring is protruding will sealed pad compresses tightly on the casing.
Preferably, the top of the shell is provided with a mixed hydrogen inlet, and the opening of the mixed hydrogen inlet faces upwards.
According to the technical scheme, the flow guider comprises the vent pipe, the flow guide pipe and the flow guide block. The vent pipe is positioned above the guide pipe and communicated with the guide pipe. The flow guide blocks are arranged on the upper end surface of the flow guide pipe, and the flow guide blocks are spirally arranged around the vent pipe. The outer surface of the flow guide block is provided with an external thread, and the inner wall of the shell is provided with an internal thread matched with the external thread. The flow guide block is directly screwed on the inner wall of the shell to fix the flow guide. The fluid director in the invention is screwed on the inner wall of the shell, the fixing mode is simple in structure and convenient to operate, and the threaded connection can ensure the stability of the fluid director, so that the smooth operation of the separation operation is ensured.
Drawings
In order to more clearly illustrate the solution of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without inventive efforts.
Fig. 1 is a sectional view of a gas-water separator for a hydrogen system of a fuel cell engine according to an embodiment of the present invention;
fig. 2 is a schematic view of an overall structure of a fluid director according to an embodiment of the present invention.
Wherein, 1 is a shell, 2 is a fluid director, 3 is an exhaust pipe, 4 is a sealing gasket, 5 is a PTC heating sheet, 6 is a water discharge electromagnetic valve, 7 is a mixed hydrogen inlet, 8 is an air pipe, 9 is a flow guide block, 10 is a flow guide pipe, 11 is an external thread, 12 is a flow guide channel, and 13 is a sealing ring.
Detailed Description
The invention discloses a gas-water separator for a hydrogen system of a fuel cell engine, wherein a fluid director in the gas-water separator is simple in fixing mode and has high stability.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The gas-water separator for the hydrogen system of the fuel cell engine comprises a shell 1 and a fluid director 2. The flow director 2 is arranged inside the housing 1. The fluid director 2 specifically includes: breather pipe 8, honeycomb duct 10 and water conservancy diversion piece 9. The vent pipe 8 and the draft tube 10 are coaxially arranged, the vent pipe 8 is positioned above the draft tube 10, and the vent pipe 8 is communicated with the draft tube 10. The guide blocks 9 are multiple, and the guide blocks 9 are arranged on the upper end surface of the guide pipe 10. The diameter of the vent pipe 8 is smaller than the diameter of the draft tube 10. A plurality of deflector blocks 9 are arranged helically around the snorkel 8. A flow guide channel 12 is formed between two adjacent flow guide blocks 9. The flow guide tube 10 has a gap with the housing 1 so that the mixed hydrogen gas moves centrifugally in the gap along the inner wall of the housing 1.
After the mixed hydrogen enters the shell 1 and meets the flow guide block 9, the mixed hydrogen can diffuse around under the action of the flow guide block 9 and impact the inner wall of the shell 1 through the flow guide channel 12, the flow guide block 9 is spirally arranged, so that the mixed hydrogen at the moment forms spiral motion along the inner wall of the shell 1, and the mixed hydrogen forms spiral downward centrifugal motion under the pushing action of the subsequent mixed hydrogen. When the mixed hydrogen moves centrifugally along the inner wall of the shell 1, the liquid water therein moves downwards continuously under the action of self gravity and is collected to the bottom of the shell 1. The separated hydrogen gas enters the inner cavity of the draft tube 10 and is discharged through the upper end opening of the vent pipe 8.
In the present invention, an external thread 11 is provided on the outer surface of the deflector 9, or on the side of the deflector 9 facing away from the ventilation pipe 8. The inner wall of the housing 1 is provided with an internal thread which cooperates with the external thread 11. The fixing of the fluid director 2 is realized after the fluid director block 9 is screwed on the inner wall of the shell 1. The threaded connection mode is simple in structure and convenient to operate, and the threaded connection can ensure the stability of the fluid director 2, so that the smooth operation of the separation operation is ensured.
In order to ensure that there is enough clearance between the flow guide pipe 10 and the housing 1 to allow the mixed hydrogen to move centrifugally in the clearance, the invention is specially designed as follows: the outer diameter of the draft tube 10 is smaller than the outer diameter of a circle formed by the plurality of flow guide blocks 9. In the radial direction, the flow guide tube 10 is retracted inwardly relative to the flow guide block 9.
In order to reduce the resistance of the flow guide block 9 to the mixed hydrogen, the flow guide block 9 is specially arranged into an arc-shaped structure. The guide block 9 of the arc structure can gently change the moving direction of the mixed hydrogen, thereby weakening the resistance to the mixed hydrogen, keeping the mixed hydrogen at a higher speed and forming obvious centrifugal motion.
After the mixed hydrogen is separated, the separated liquid water is collected at the bottom of the housing 1. If the bottom of the housing 1 may be frozen in cold winter, the water in the housing 1 cannot be discharged, and thus the separation work cannot be smoothly performed. Therefore, the invention designs the following scheme: a drain solenoid valve 6 is installed at a drain port at the bottom of the housing 1. When the water amount at the bottom of the housing 1 reaches a certain height, the water discharge solenoid valve 6 is automatically opened to discharge the water. Further, the drain solenoid valve 6 has a self-heating function, that is, the drain solenoid valve 6 can transfer heat to the surroundings, thereby preventing water at the bottom of the housing 1 from freezing.
In addition, a heating device may be provided on the outer surface of the housing 1. When the external environment temperature is lower than the set value, the heating device is started to heat the shell 1, so that the water at the bottom of the shell 1 is further prevented from freezing. Specifically, the heating device may be preferably a PTC heating sheet 5. The PTC heating sheet 5 has the advantages of small thermal resistance, high heat exchange efficiency and the like.
The hydrogen gas discharge scheme is described next: the separated hydrogen enters the inner cavity of the draft tube 10, then moves upwards into the vent pipe 8, then continuously moves upwards into the exhaust pipe 3, and finally enters the fuel cell through the circulating gas path. The exhaust pipe 3 is inserted into the casing 1 in a radial direction of the casing 1, and the upper end of the vent pipe 8 is inserted into the exhaust pipe 3, so that the vent pipe 8 communicates with the exhaust pipe 3.
In order to ensure the sealing performance between the exhaust pipe 3 and the housing 1, a gasket 4 is provided at an insertion hole of the housing 1 to be fitted with the exhaust pipe 3. In order to fix the sealing gasket 4, the exhaust pipe 3 is provided with a ring bulge. The annular projection is arranged around the circumference of the exhaust pipe 3. The annular bead presses the sealing gasket 4 against the housing 1.
In the present invention, the mixed hydrogen is introduced into the housing 1 through the mixed hydrogen inlet 7, and the mixed hydrogen inlet 7 is disposed at the top of the housing 1 with its opening facing upward. By the arrangement, the mixed hydrogen can form downward spiral centrifugal motion.
The shell comprises an upper cover and a lower shell. The upper cover is buckled on the lower shell to form an integral shell. The exhaust pipe 3 is provided on the upper cover. A sealing ring 13 is arranged between the upper cover and the lower shell. The lower shell is provided with a groove for accommodating the sealing ring 13, and the upper cover is provided with a bulge for extruding the sealing ring 13.
Finally, it should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A gas-water separator for a hydrogen system of a fuel cell engine comprises a shell (1) and a fluid director (2) arranged in the shell (1), and is characterized in that the fluid director (2) comprises a vent pipe (8), a guide pipe (10) and a guide block (9), the vent pipe (8) is positioned above the guide pipe (10), and the vent pipe (8) is communicated with the guide pipe (10);
the flow guide blocks (9) are arranged on the upper end surface of the flow guide pipe (10), the number of the flow guide blocks (9) is multiple, the flow guide blocks (9) are spirally arranged around the vent pipe (8), and a flow guide channel (12) is formed between every two adjacent flow guide blocks (9);
a movement space for mixed hydrogen to do centrifugal movement is formed between the flow guide pipe (10) and the inner wall of the shell (1), and the upper port of the vent pipe (8) is used for discharging the hydrogen.
2. The gas-water separator for a fuel cell engine hydrogen system according to claim 1, wherein said draft tube (10) is inwardly contracted with respect to said deflector block (9) in a radial direction.
3. The gas-water separator for a hydrogen system of a fuel cell engine according to claim 1, wherein the deflector block (9) has an arc-shaped structure.
4. The gas-water separator for a fuel cell engine hydrogen system according to claim 1, characterized in that a drain solenoid valve (6) is provided at the bottom of the case (1).
5. The gas-water separator for a fuel cell engine hydrogen system according to claim 4, wherein the drain solenoid valve (6) has a self-heating function.
6. The gas-water separator for a fuel cell engine hydrogen system according to claim 1, characterized in that a heating means is provided on an outer surface of the case (1).
7. The gas-water separator for a fuel cell engine hydrogen system according to claim 6, wherein the heating means is a PTC heating chip (5).
8. The gas-water separator for a fuel cell engine hydrogen system according to claim 1, further comprising an exhaust pipe (3), wherein the exhaust pipe (3) is inserted into the housing (1) in a radial direction of the housing (1), and an upper end of the vent pipe (8) is inserted into the exhaust pipe (3).
9. The gas-water separator for the hydrogen system of the fuel cell engine according to claim 8, wherein a gasket (4) is disposed at a plug hole on the housing (1) which is matched with the exhaust pipe (3), and a ring bulge is disposed on the outer surface of the exhaust pipe (3), and the ring bulge presses the gasket (4) against the housing (1).
10. The gas-water separator for a fuel cell engine hydrogen system according to claim 1, characterized in that a mixed hydrogen inlet (7) is provided at the top of the housing (1), and the opening of the mixed hydrogen inlet (7) is upward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110612486.4A CN113144758B (en) | 2021-06-02 | 2021-06-02 | Gas-water separator for fuel cell engine hydrogen system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110612486.4A CN113144758B (en) | 2021-06-02 | 2021-06-02 | Gas-water separator for fuel cell engine hydrogen system |
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| Publication Number | Publication Date |
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| CN113144758A true CN113144758A (en) | 2021-07-23 |
| CN113144758B CN113144758B (en) | 2022-08-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115954503A (en) * | 2023-03-14 | 2023-04-11 | 西安旭旌再生资源有限公司 | Hydrogen fuel cell water-gas separation system |
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| JP2003236325A (en) * | 2002-02-15 | 2003-08-26 | Tlv Co Ltd | Gas-liquid separator provided with drain valve |
| JP2013179064A (en) * | 2013-04-25 | 2013-09-09 | Toyota Motor Corp | Fuel cell system |
| CN204865265U (en) * | 2015-08-17 | 2015-12-16 | 江苏欧超科技有限公司 | High -efficient gas -liquid separation |
| CN110289437A (en) * | 2019-06-14 | 2019-09-27 | 武汉泰歌氢能汽车有限公司 | A kind of cyclone type circulating filtration gas and water separator for fuel cell system |
| CN211025462U (en) * | 2019-06-28 | 2020-07-17 | 武汉格罗夫氢能汽车有限公司 | Gas-water separation device of fuel cell system |
| CN111569538A (en) * | 2020-05-09 | 2020-08-25 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Water separator for vehicle and ship fuel cell engine |
| CN211659487U (en) * | 2019-12-31 | 2020-10-13 | 德州克代尔集团有限公司 | Gas-water separator |
| CN212017254U (en) * | 2020-04-15 | 2020-11-27 | 上海隆麦机械设备工程有限公司 | Gas-water separation device for desulfurization |
| CN112843884A (en) * | 2021-03-16 | 2021-05-28 | 上海燃锐新能源汽车技术有限公司 | Gas-water separator, method for producing same, and fuel cell device |
-
2021
- 2021-06-02 CN CN202110612486.4A patent/CN113144758B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003236325A (en) * | 2002-02-15 | 2003-08-26 | Tlv Co Ltd | Gas-liquid separator provided with drain valve |
| JP2013179064A (en) * | 2013-04-25 | 2013-09-09 | Toyota Motor Corp | Fuel cell system |
| CN204865265U (en) * | 2015-08-17 | 2015-12-16 | 江苏欧超科技有限公司 | High -efficient gas -liquid separation |
| CN110289437A (en) * | 2019-06-14 | 2019-09-27 | 武汉泰歌氢能汽车有限公司 | A kind of cyclone type circulating filtration gas and water separator for fuel cell system |
| CN211025462U (en) * | 2019-06-28 | 2020-07-17 | 武汉格罗夫氢能汽车有限公司 | Gas-water separation device of fuel cell system |
| CN211659487U (en) * | 2019-12-31 | 2020-10-13 | 德州克代尔集团有限公司 | Gas-water separator |
| CN212017254U (en) * | 2020-04-15 | 2020-11-27 | 上海隆麦机械设备工程有限公司 | Gas-water separation device for desulfurization |
| CN111569538A (en) * | 2020-05-09 | 2020-08-25 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Water separator for vehicle and ship fuel cell engine |
| CN112843884A (en) * | 2021-03-16 | 2021-05-28 | 上海燃锐新能源汽车技术有限公司 | Gas-water separator, method for producing same, and fuel cell device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115954503A (en) * | 2023-03-14 | 2023-04-11 | 西安旭旌再生资源有限公司 | Hydrogen fuel cell water-gas separation system |
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