CN220341272U - Structure for avoiding hydrogen fuel cell waste gas condensate water from flowing back to galvanic pile - Google Patents
Structure for avoiding hydrogen fuel cell waste gas condensate water from flowing back to galvanic pile Download PDFInfo
- Publication number
- CN220341272U CN220341272U CN202321450682.7U CN202321450682U CN220341272U CN 220341272 U CN220341272 U CN 220341272U CN 202321450682 U CN202321450682 U CN 202321450682U CN 220341272 U CN220341272 U CN 220341272U
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- China
- Prior art keywords
- water
- fuel cell
- hydrogen fuel
- inlet pipe
- flowing back
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 106
- 239000000446 fuel Substances 0.000 title claims abstract description 31
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 239000001257 hydrogen Substances 0.000 title claims abstract description 19
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 19
- 239000002912 waste gas Substances 0.000 title claims abstract description 8
- 239000007789 gas Substances 0.000 claims abstract description 25
- 230000003584 silencer Effects 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 230000003197 catalytic effect Effects 0.000 abstract description 3
- 238000006424 Flood reaction Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery 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
Landscapes
- Fuel Cell (AREA)
Abstract
The utility model relates to a hydrogen fuel cell field specifically discloses a structure for avoiding hydrogen fuel cell waste gas comdenstion water backward flow pile, and it includes the siphon device that sets up between fuel cell and the heat exchanger, utilizes siphon device guide rivers to discharge downwards, avoids comdenstion water backward flow to the catalytic layer that floods in the pile. The problem that the muffler tail gas discharge port mounted position has limitation is solved when the problem of the waste gas condensate water backflow of the hydrogen fuel cell is solved.
Description
Technical Field
The utility model relates to the field of hydrogen fuel cells, in particular to a structure for preventing waste gas condensate water of a hydrogen fuel cell from flowing back to a galvanic pile.
Background
The hydrogen in the hydrogen storage tank is utilized to be led into the electric pile to generate electrochemical reaction to generate electric energy, the rest tail gas firstly enters the heat exchanger to carry out heat recovery, and then the tail gas passes through the muffler additionally arranged at the tail end of the exhaust path to reduce exhaust noise. In the exhaust emission process, because the temperature is higher when gas comes out from the electric pile with higher temperature, the vapor is condensed by the external environment effect of the heat exchanger and the outlet pipeline, condensed water is formed in the muffler and the heat exchanger, and in addition, if the gas humidity is higher when entering the electric pile for reaction, the generated liquid water is further increased, so that the condensed water emission structure of the hydrogen fuel cell is indispensable.
The tail gas discharge port of the existing muffler is generally lower than the tail gas discharge port at the electric pile, so that water flow is guided to naturally discharge downwards from the heat exchanger to the muffler, condensate water is prevented from flowing back to a flooding catalytic layer in the fuel electric pile, and the reaction rate is reduced. However, this also results in a very limited position of the exhaust gas outlet of the muffler, and must be designed in a range lower than the exhaust gas outlet of the stack, which results in limitation of the related components of the fuel cell in the overall arrangement, and affects the utilization of the effective space, so it is necessary to propose a structure for avoiding the backflow of the condensate water of the exhaust gas of the hydrogen fuel cell into the stack to solve the above-mentioned problems.
Disclosure of Invention
The utility model provides a structure for avoiding the backflow of waste gas condensate water of a hydrogen fuel cell into a galvanic pile, which solves the problem of the backflow of the waste gas condensate water of the hydrogen fuel cell and the problem of limitation of the installation position of a tail gas discharge port of a muffler.
In order to solve the problems, the utility model adopts the following technical scheme: a siphon device for discharging condensed water is vertically arranged between an air outlet of a fuel cell and an air inlet of a heat exchanger, and comprises a water inlet pipe and a water outlet pipe, wherein the highest point of the water inlet pipe is higher than the highest point of the water outlet pipe.
The basic principle of the scheme is as follows: the tail gas enters the heat exchanger for heat exchange to generate condensate water, the condensate water flows to the siphon device, and enters from the water inlet pipe of the siphon device, when the water flow is small, the water flow naturally flows out under the action of gravity, when the water flow is large, the water flow is filled in the siphon device, as the height difference exists between the water inlet pipe and the water outlet pipe of the siphon device, the pressure intensity of the water outlet pipe is smaller than that of the water inlet pipe, and the liquid continuously flows out from the water outlet pipe under the action of pressure, so that the discharge of the condensate water is completed.
The beneficial effect of this scheme is: the tail gas discharge port of the existing muffler is usually lower than the tail gas discharge port at the position of the electric pile, the purpose is to guide water flow to naturally discharge downwards, condensate water is prevented from flowing back to the water flooded catalytic layer in the fuel electric pile, but the installation and selection positions of the tail gas discharge port of the muffler are limited.
Further, the air outlet of the heat exchanger is communicated with an external silencer, a hose is communicated with the bottom of the silencer, and the water outlet pipe of the siphon device is communicated with the hose through a three-way pipe. A small amount of condensed water, which may be generated in the muffler, is led out through the hose.
Further, the siphon device also comprises a U-shaped pipeline, one end top of the U-shaped pipeline is communicated with the water inlet pipe, and the other end side wall of the U-shaped pipeline is communicated with the water outlet pipe. The height difference between the water inlet pipe and the water outlet pipe of the siphon device is realized.
Further, a floating ball capable of floating in water is arranged in one end, close to the water inlet pipe, of the U-shaped pipeline, a necking is formed at the joint of the water inlet pipe and the U-shaped pipeline, and a baffle capable of blocking the floating ball is arranged in one end, far away from the water inlet pipe, of the U-shaped pipeline. When the water flow is small or a small amount of water remains in the U-shaped pipe, the tail gas emission enables the water inlet pipe of the siphon device to generate negative pressure, water can be sucked back, the U-shaped pipe is temporarily sealed by the floating ball for blocking, and the baffle plate prevents the floating ball from being discharged along with the water flow.
Further, the baffle is in the shape of an incomplete ring, bar or stick. The baffle extends to the pipeline axis, and the top is contacted with the floater outer wall to block the floater.
Further, the air outlet height of the muffler is not lower than the air outlet height of the fuel cell. The normal exhaust of the fuel cell is ensured, and the backflow is prevented.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
fig. 2 is a schematic diagram of a siphon device according to an embodiment of the present utility model.
Detailed Description
The following is a further detailed description of the embodiments:
reference numerals in the drawings of the specification include: the fuel cell comprises a fuel cell 1, a first outlet 2, a heat exchanger 3, a first air inlet 4, a siphon device 5, a water inlet pipe 6, a water outlet pipe 7, a hose 8, a tee pipe 9, a silencer 10, a floating ball 11 and a baffle 12.
An embodiment is substantially as shown in fig. 1 to 2:
the first outlet 2 of the fuel cell 1 for discharging the tail gas is communicated with the first air inlet 4 of the heat exchanger 3, and the tail gas enters the muffler 10 through the second outlet of the heat exchanger 3 and flows out from the outlet of the muffler 10. Wherein, there is siphon device 5 vertical intercommunication between the first export 2 of fuel cell 1 and the first air inlet 4 of heat exchanger 3, and siphon device 5 internal piping is the U type, at the top of the vertical intercommunication U type pipeline one end of inlet tube 6 of siphon device 5, the other end intercommunication outlet pipe 7 of U type pipeline, and the highest point of outlet pipe 7 is less than the minimum point of inlet tube 6 to make siphon device 5 can form siphon effect under the circumstances that is full of water. The bottom of the water outlet pipe 7 and the bottom of the silencer 10 are respectively communicated with the hoses 8, and the two hoses 8 are communicated through the three-way pipe 9, so that condensed water flowing through the siphon device 5 and condensed water in the silencer 10 are converged through the three-way pipe 9 and then discharged.
The floating ball 11 is placed inside one end of the U-shaped pipeline communicated with the water inlet pipe 6, the baffle 12 capable of limiting the floating ball 11 is arranged on the side wall of the U-shaped pipeline below the floating ball 11, a certain angle is formed between the baffle 12 and the side wall of the U-shaped pipeline, the top end of the baffle 12 can be contacted with the surface of the floating ball 11, and the shape of the baffle 12 can be any shape such as a ring shape, a sheet shape or a stick shape. When the condensed water is less and does not fully fill the U-shaped pipe or a small amount of water remains at the bottom of the U-shaped pipe, the tail gas emission enables the water inlet pipe 6 to generate negative pressure, the floating ball 11 is subjected to upward suction, in order to prevent the floating ball 11 from sliding out of the top, the joint of the water inlet pipe 6 and the U-shaped pipe is set to be a necking, the pipe diameter of the water inlet pipe 6 is smaller than that of the pipeline inside the siphon device 5, the movement route of the floating ball 11 is limited at the upper part, and when the condensed water flows down from the heat exchanger 3 to the water inlet, the floating ball 11 is driven to be far away from the water inlet. When the amount of the condensed water is large, the U-shaped pipe is fully filled with the water, so that the condensed water is continuously discharged under the siphon effect, and the condensed water generated in the silencer 10 naturally flows out.
The specific implementation process is as follows: tail gas generated by the operation of the fuel cell 1 enters the heat exchanger 3 to exchange heat, condensed water generated by heat exchange flows from the heat exchanger 3 to the siphon device 5, when the water quantity of the condensed water is small, the condensed water naturally flows to the water inlet pipe 6 of the siphon device 5, when the U-shaped pipe of the siphon device 5 is filled with water, the condensed water flowing down newly pushes water at the water outlet pipe 7 to flow out, and meanwhile, the condensed water generated inside the silencer 10 flows out from the bottom pipeline to realize the discharge of the condensed water; when the water quantity of the condensed water is large, the inside of the siphon device 5, the water inlet pipe 6 and the water outlet pipe 7 are filled with water, and the condensed water is continuously discharged outwards under the siphon action because the highest point of the water outlet pipe 7 is lower than the highest point of the water inlet pipe 6.
The foregoing is merely exemplary embodiments of the present utility model, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (6)
1. The utility model provides a structure of avoiding hydrogen fuel cell waste gas comdenstion water backward flow pile which characterized in that: a siphon device for discharging condensed water is vertically arranged between the air outlet of the fuel cell and the air inlet of the heat exchanger, the siphon device comprises a water inlet pipe and a water outlet pipe, and the highest point of the water inlet pipe is higher than the highest point of the water outlet pipe.
2. A structure for preventing hydrogen fuel cell exhaust gas condensate water from flowing back to a stack as claimed in claim 1, wherein: the air outlet of the heat exchanger is communicated with an external silencer, a hose is communicated with the bottom of the silencer, and the water outlet pipe of the siphon device is communicated with the hose through a three-way pipe.
3. A structure for preventing hydrogen fuel cell exhaust gas condensate water from flowing back to a stack as claimed in claim 2, wherein: the siphon device further comprises a U-shaped pipeline, one end top of the U-shaped pipeline is communicated with the water inlet pipe, and the other end side wall of the U-shaped pipeline is communicated with the water outlet pipe.
4. A structure for preventing hydrogen fuel cell exhaust gas condensate water from flowing back to the stack as claimed in claim 3, wherein: the U-shaped pipeline is characterized in that a floating ball capable of floating in water is arranged in one end, close to the water inlet pipe, of the U-shaped pipeline, a necking is formed at the joint of the water inlet pipe and the U-shaped pipeline, and a baffle capable of blocking the floating ball is arranged in one end, far away from the water inlet pipe, of the U-shaped pipeline.
5. The structure for preventing condensate water from flowing back to the stack in the exhaust gas of the hydrogen fuel cell as recited in claim 4, wherein: the baffle is in an incomplete ring shape, a strip shape or a stick shape.
6. The structure for preventing condensate water from flowing back to the stack in the exhaust gas of the hydrogen fuel cell according to claim 5, wherein: the height of the air outlet of the silencer is not lower than that of the air outlet of the fuel cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321450682.7U CN220341272U (en) | 2023-06-07 | 2023-06-07 | Structure for avoiding hydrogen fuel cell waste gas condensate water from flowing back to galvanic pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321450682.7U CN220341272U (en) | 2023-06-07 | 2023-06-07 | Structure for avoiding hydrogen fuel cell waste gas condensate water from flowing back to galvanic pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220341272U true CN220341272U (en) | 2024-01-12 |
Family
ID=89441952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321450682.7U Active CN220341272U (en) | 2023-06-07 | 2023-06-07 | Structure for avoiding hydrogen fuel cell waste gas condensate water from flowing back to galvanic pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220341272U (en) |
-
2023
- 2023-06-07 CN CN202321450682.7U patent/CN220341272U/en active Active
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