CN211182374U - Hydrogen fuel cell tail gas discharge system - Google Patents
Hydrogen fuel cell tail gas discharge system Download PDFInfo
- Publication number
- CN211182374U CN211182374U CN201921851492.XU CN201921851492U CN211182374U CN 211182374 U CN211182374 U CN 211182374U CN 201921851492 U CN201921851492 U CN 201921851492U CN 211182374 U CN211182374 U CN 211182374U
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- Prior art keywords
- fuel cell
- water
- hydrogen fuel
- gas
- vapor separator
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- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 86
- 239000001257 hydrogen Substances 0.000 title claims abstract description 86
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 239000007789 gas Substances 0.000 title claims abstract description 76
- 239000000446 fuel Substances 0.000 title claims abstract description 73
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 92
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 abstract description 8
- 150000002431 hydrogen Chemical class 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000002912 waste gas Substances 0.000 description 5
- 238000009533 lab test Methods 0.000 description 3
- 238000004880 explosion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Classifications
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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 utility model discloses a hydrogen fuel cell exhaust emission system, this hydrogen fuel cell exhaust emission system include hydrogen fuel cell, water vapor separator and spark arrester, hydrogen fuel cell has the gas vent that is used for discharging tail gas, the water vapor separator has air inlet, gas vent and outlet, hydrogen fuel cell's gas vent with the air inlet of water vapor separator is connected, the gas vent of water vapor separator with the spark arrester is connected, the outlet and the drainage pipe of water vapor separator are connected. The utility model discloses hydrogen fuel cell exhaust emission system can effectively reduce exhaust resistance, improve the steam-water separation degree, improve fuel cell's performance and improve system security.
Description
Technical Field
The utility model relates to a fuel cell technical field, concretely relates to hydrogen fuel cell exhaust emission system.
Background
A hydrogen fuel cell refers to a Proton Exchange Membrane Fuel Cell (PEMFC), which is an electrochemical device for converting chemical energy existing in fuel and oxidant into electrical energy, and has the advantages of high energy conversion efficiency, low operating temperature, rapid start-up, no pollution, etc. The development and progress of hydrogen fuel cells, in which the treatment of the tail gas is of considerable importance for the entire test, is not without leaving a great deal of experimental work.
When the existing hydrogen fuel cell is used for testing experiments, hydrogen tail gas, air tail gas and water vapor discharged by the existing hydrogen fuel cell are directly discharged to the outdoor environment through a longer tail exhaust pipe, water vapor separation is not carried out on the hydrogen tail gas, the air tail gas and the water vapor, and the water vapor can drip and leak in a laboratory after being condensed to influence the environment of the laboratory. Meanwhile, considering that there may be a situation that an open fire occurs at an external exhaust port of a laboratory, since hydrogen is a combustible gas, a safety accident may occur after the open fire occurs.
Therefore, the existing fuel cell has the defect of influence on the laboratory environment due to the fact that water-vapor separation is not carried out on waste gas in the laboratory test, and meanwhile, under the condition that open fire occurs in an external exhaust port of a laboratory, safety accidents can be caused, and the safety is low.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a hydrogen fuel cell exhaust emission system to solve current hydrogen fuel cell and not carry out steam and water separation and the low technical problem of security to its tail gas of discharging when the laboratory test.
In order to solve the technical problem, the utility model provides a hydrogen fuel cell exhaust emission system, this hydrogen fuel cell exhaust emission system include hydrogen fuel cell, water vapor separator and spark arrester, hydrogen fuel cell has the gas vent that is used for discharging tail gas, the water vapor separator has air inlet, gas vent and outlet, hydrogen fuel cell's gas vent with the air inlet of water vapor separator is connected, the gas vent of water vapor separator with the spark arrester is connected, the outlet and the drainage pipe of water vapor separator are connected.
Preferably, the gas inlet of the water-vapor separator is connected with the gas outlet of the hydrogen fuel cell through a first gas exhaust pipe, the gas outlet of the water-vapor separator is connected with the flame arrester through a second gas exhaust pipe, the inlet end of the first gas exhaust pipe is higher than the outlet end of the first gas exhaust pipe, and the inlet end of the second gas exhaust pipe is lower than the outlet end of the second gas exhaust pipe.
Preferably, the hydrogen fuel cell tail gas discharge system further comprises a fan for extracting the waste gas in the first exhaust pipe and the second exhaust pipe, and the fan is connected with the flame arrester through a third exhaust pipe.
Preferably, the fan is an axial fan.
Preferably, hydrogen fuel cell tail gas discharge system still includes hydrogen concentration detector and alarm, the hydrogen concentration detector sets up the exit end of spark arrester, the alarm with hydrogen concentration detector electric connection, the alarm is used for producing alarm signal.
Preferably, the alarm is an alarm lamp and/or a buzzer.
Preferably, the hydrogen fuel cell tail gas exhaust system further comprises a drain valve for blocking steam and draining water, and the water outlet of the water-steam separator is connected with the water draining pipeline through the drain valve.
The embodiment of the utility model provides a beneficial effect lies in: the water-steam separator can smoothly separate and discharge water from tail exhaust gas, the separated water enters the drainage pipeline through the water outlet of the water-steam separator, and the separated waste gas enters the flame arrester through the air outlet of the water-steam separator and is finally discharged to the air through the flame arrester. The utility model relates to a hydrogen fuel cell exhaust emission system can carry out water vapor separation to the waste gas that fuel cell discharged for hydrogen tail gas and empty exhaust emission are to outdoor, and vapor then flows into to drainage pipe after the liquefaction, avoids its water clock in the laboratory. Simultaneously, under the situation of naked light appears in the outside gas vent in laboratory, the accessible the utility model relates to a this naked light and exhaust emission system are kept apart to the spark arrester, avoid taking place hydrogen explosion accident to improve hydrogen fuel cell exhaust emission system's security.
Drawings
Fig. 1 is a schematic structural diagram of the hydrogen fuel cell exhaust emission system of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention, and all other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
In order to solve the above technical problem, the utility model provides a hydrogen fuel cell exhaust emission system, refer to fig. 1, this hydrogen fuel cell exhaust emission system includes hydrogen fuel cell 10, water vapor separator 20 and spark arrester 30, hydrogen fuel cell 10 has the gas vent that is used for discharging tail gas, water vapor separator 20 has the air inlet, gas vent and outlet, hydrogen fuel cell 10's gas vent is connected with water vapor separator 20's air inlet, water vapor separator 20's gas vent is connected with spark arrester 30, water vapor separator 20's outlet and drainage pipe are connected.
In this embodiment, the water-vapor separator 20 is a pressure vessel structure carbon steel or stainless steel device, the interface is flange structure DN16/DN25/DN40, the water-vapor separator 20 must be installed on the horizontal pipeline, and the water outlet is vertical downward. The exhaust gas discharged from the exhaust port of the fuel cell 10 is subjected to gas-liquid separation by the water-vapor separator 20, the liquid water is discharged through the water discharge port of the water-vapor separator 20, and the exhaust gas (air, hydrogen gas) is discharged through the exhaust port of the water-vapor separator 20, thereby achieving the separation treatment of the gas and the liquid in the exhaust gas of the fuel cell 10.
After the exhaust gas discharged from the exhaust port of the fuel cell 10 is treated by the water-vapor separator 20, the separated exhaust gas is discharged to the outdoor air through the exhaust pipe, and in consideration of the possibility of an unexpected situation that the outside of the exhaust pipe catches fire or there is open fire, the flame arrester 30 for preventing the external flame from spreading to the indoor hydrogen fuel cell 10 is arranged outdoors, so as to improve the safety of the hydrogen fuel cell exhaust gas discharge system. That is, when a fire occurs outdoors or an open fire occurs, it can be stopped outdoors by the flame arrester 30, so that the hydrogen fuel cell 10 indoors is isolated from flames outdoors, thereby preventing a safety accident due to hydrogen explosion from occurring.
In the above embodiment, the air inlet of the water-vapor separator 20 and the air outlet of the hydrogen fuel cell 10 are connected by the first exhaust pipe, the air outlet of the water-vapor separator 20 and the flame arrester 30 are connected by the second exhaust pipe, the first exhaust pipe is obliquely arranged between the water-vapor separator 20 and the hydrogen fuel cell 10, and the inlet end of the first exhaust pipe is higher than the outlet end of the first exhaust pipe, the second exhaust pipe is obliquely arranged between the water-vapor separator 20 and the flame arrester 30, and the inlet end of the second exhaust pipe is lower than the outlet end of the second exhaust pipe.
In consideration of the exhaust gas discharged from the exhaust port of the fuel cell 10, condensed water may be generated at the inner wall of the first exhaust pipe in the process of entering the water vapor separator 20 via the first exhaust pipe. In order to prevent the condensed water from being collected in the first exhaust pipe to affect the discharge of the exhaust gas, the first exhaust pipe may be disposed obliquely between the hydrogen fuel cell 10 and the water-vapor separator 20 such that the condensed water collected on the inner wall of the first exhaust pipe flows into the water-vapor separator 20 and is then discharged into the exhaust pipe through the water discharge opening of the water-vapor separator 20.
It will be appreciated that in order to allow the condensed water to flow into the water-vapor separator 20 along the wall of the first exhaust pipe, the inlet end of the first exhaust pipe is higher than the outlet end of the first exhaust pipe, so that the condensed water will flow in the direction close to the water-vapor separator 20 under the action of its own gravity, and finally flow into the water-vapor separator 20, thereby avoiding the performance of the hydrogen fuel cell 10 being affected by the backflow of the condensed water into the hydrogen fuel cell 10.
Also, considering the exhaust gas discharged from the exhaust port of the water vapor separator 20, condensed water may be generated at the inner wall of the second exhaust pipe during the entrance to the flame arrester 30 through the second exhaust pipe. It should be noted that the exhaust gas discharged from the exhaust port of the hydrogen fuel cell 10 after being separated by the water-vapor separator 20 cannot be completely separated, and a small amount of water vapor may still be entrained in the separated exhaust gas, and the water vapor may contact with the inner wall of the second exhaust pipe during the flowing process, so that condensed water is formed and collected in the second exhaust pipe. In order to prevent the condensed water from being collected in the second exhaust pipe to affect the discharge of the exhaust gas, the second exhaust pipe may be obliquely disposed between the water-vapor separator 20 and the flame arrester 30 so that the condensed water collected on the inner wall of the second exhaust pipe flows into the water-vapor separator 20 and is then discharged into the drain pipe through the drain opening of the water-vapor separator 20.
It will be appreciated that in order to allow the condensate to flow into the water-steam separator 20 along the walls of the secondary exhaust pipe, it is necessary to ensure that the inlet end of the secondary exhaust pipe is lower than the outlet end of the secondary exhaust pipe, so that the condensate will flow under its own weight in a direction close to the water-steam separator 20 and eventually into the water-steam separator 20.
In a preferred embodiment, to ensure that the exhaust is unobstructed, the exhaust from the first and second exhaust pipes is continuously evacuated by a blower, which is connected to flame arrestor 30 via a third exhaust pipe. Specifically, the fan rotates, and the gas flow velocity in the first exhaust pipe and the second exhaust pipe is accelerated, so that the effect of accelerating exhaust gas extraction is achieved, and the purpose of reducing tail discharge resistance is indirectly achieved. Further, the utility model relates to a fan is axial fan 40, and axial fan 40 has the airflow direction and the characteristics of the axle syntropy of impeller, and the air current that axial fan produced promptly will be on a parallel with the axial flow of impeller. The axial flow fan 40 specifically includes a casing, a motor disposed in the casing, and an impeller connected to an output shaft of the motor, the motor rotates to drive the impeller to rotate, when the impeller rotates, air enters the impeller from an air inlet axially, and the entering air is pushed by blades on the impeller to increase energy of the air, and then flows into the guide vanes. The guide vane changes the deflection gas flow into axial flow, and simultaneously leads the gas into the diffuser pipe so as to convert the kinetic energy of the gas into pressure energy and finally lead the pressure energy into the first exhaust pipe and the second exhaust pipe.
In consideration of the hydrogen leakage problem of the hydrogen fuel cell 10, the hydrogen concentration in the exhaust system can be monitored in real time by arranging a hydrogen concentration detector 50, and when the hydrogen concentration reaches a set threshold value, the alarm 60 reminds the worker to avoid safety accidents. Specifically, the utility model relates to a hydrogen fuel cell exhaust emission system still includes hydrogen concentration detector 50 and alarm 60, and hydrogen concentration detector 50 sets up the exit end at spark arrester 30, alarm 60 and 50 electric connection of hydrogen concentration detector, and alarm 60 is used for producing alarm signal. Of course, the hydrogen concentration detector 50 can also prevent hydrogen from being accumulated in the exhaust pipe due to poor exhaust, thereby preventing safety accidents.
When the hydrogen concentration in the exhaust pipe exceeds a set threshold, the hydrogen concentration detector 50 sends an alarm signal to the alarm 60, so that the alarm 60 sends out an acoustic and/or optical alarm signal to remind a worker. In addition, under the above state, the rotating speed of the fan can be increased to increase the exhaust amount and accelerate the exhaust of the waste gas. After the alarm, the staff needs to immediately shut down the test system to check whether the exhaust system is not smooth or whether the fuel cell engine and the electric pile are leaked, and the test can be restarted only after the fault is found out and maintained.
To ensure rapid drainage of the separated liquid, a suitable combination of trap 70 may be connected to the drain at the bottom of the water vapor separator 20, and the trap 70 should be installed generally horizontally in the pipeline. Specifically, the hydrogen fuel cell exhaust gas discharge system of the present invention further includes a drain valve 70 for blocking steam and draining water, and the water outlet of the steam separator 20 is connected to the water drainage pipeline through the drain valve 70. After the exhaust gas treated by the water-vapor separator 20 is discharged from the water outlet of the water-vapor separator 20, the liquid water entrained in the exhaust gas is discharged into the drain valve 70, and after the water in the drain valve 70 reaches a certain level, the liquid water is automatically discharged from the drain valve 70 into the drain pipeline.
The utility model provides a hydrogen fuel cell exhaust emission system for laboratory test, this hydrogen fuel cell exhaust emission system include hydrogen fuel cell 10, vapor separator 20, spark arrester 30, axial fan 40, hydrogen concentration detector 50, alarm 60 and trap 70 etc. and this hydrogen fuel cell exhaust emission system's function is perfect, has characteristics such as exhaust resistance is little, the security is high, the vapor-water separation is effectual and convenient to use. It should be noted that the present invention relates to a hydrogen fuel cell exhaust system, which is not only suitable for testing hydrogen fuel cell engines, but also suitable for testing bare hydrogen fuel cell stacks.
What just go up be the utility model discloses a part or preferred embodiment, no matter be characters or the drawing can not consequently restrict the utility model discloses the scope of protection, all with the utility model discloses a holistic thought down, utilize the equivalent structure transform that the contents of the description and the drawing do, or direct/indirect application all includes in other relevant technical field the utility model discloses the within range of protection.
Claims (7)
1. A hydrogen fuel cell tail gas discharge system is characterized by comprising a hydrogen fuel cell, a water-vapor separator and a fire arrester, wherein the hydrogen fuel cell is provided with a gas exhaust port for discharging tail gas, the water-vapor separator is provided with a gas inlet, a gas exhaust port and a water discharge port, the gas exhaust port of the hydrogen fuel cell is connected with the gas inlet of the water-vapor separator, the gas exhaust port of the water-vapor separator is connected with the fire arrester, and the water discharge port of the water-vapor separator is connected with a water discharge pipeline.
2. The hydrogen fuel cell off-gas discharge system according to claim 1, wherein the gas inlet of the water-vapor separator and the gas outlet of the hydrogen fuel cell are connected by a first exhaust pipe, the gas outlet of the water-vapor separator and the flame arrester are connected by a second exhaust pipe, the inlet end of the first exhaust pipe is higher than the outlet end of the first exhaust pipe, and the inlet end of the second exhaust pipe is lower than the outlet end of the second exhaust pipe.
3. The hydrogen fuel cell offgas discharging system as defined in claim 2, further comprising a fan for drawing off the offgas in the first and second exhaust pipes, the fan being connected to the flame arrester through a third exhaust pipe.
4. The hydrogen fuel cell off-gas discharge system of claim 3, wherein the fan is an axial fan.
5. The hydrogen fuel cell tail gas emission system of claim 1, further comprising a hydrogen concentration detector and an alarm, wherein the hydrogen concentration detector is arranged at the outlet end of the flame arrester, the alarm is electrically connected with the hydrogen concentration detector, and the alarm is used for generating an alarm signal.
6. The hydrogen fuel cell exhaust gas discharge system according to claim 5, wherein the alarm is an alarm lamp and/or a buzzer.
7. The hydrogen fuel cell off-gas discharge system according to claim 1, further comprising a drain valve for blocking steam and discharging water, the drain port of the water-steam separator being connected to the drain pipe through the drain valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921851492.XU CN211182374U (en) | 2019-10-30 | 2019-10-30 | Hydrogen fuel cell tail gas discharge system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921851492.XU CN211182374U (en) | 2019-10-30 | 2019-10-30 | Hydrogen fuel cell tail gas discharge system |
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| Publication Number | Publication Date |
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| CN211182374U true CN211182374U (en) | 2020-08-04 |
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| CN201921851492.XU Active CN211182374U (en) | 2019-10-30 | 2019-10-30 | Hydrogen fuel cell tail gas discharge system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022029021A1 (en) * | 2020-08-07 | 2022-02-10 | Cellcentric Gmbh & Co. Kg | Hydrogen leakage detection system and method |
| CN115107503A (en) * | 2022-07-26 | 2022-09-27 | 深圳市世椿智能装备股份有限公司 | Hydrogen exhaust device of fuel cell |
-
2019
- 2019-10-30 CN CN201921851492.XU patent/CN211182374U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022029021A1 (en) * | 2020-08-07 | 2022-02-10 | Cellcentric Gmbh & Co. Kg | Hydrogen leakage detection system and method |
| CN115107503A (en) * | 2022-07-26 | 2022-09-27 | 深圳市世椿智能装备股份有限公司 | Hydrogen exhaust device of fuel cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: China Hydrogen New Energy (Shenzhen) New Technology Co.,Ltd. Assignor: SHENZHEN GUOQING NEW ENERGY TECHNOLOGY CO.,LTD. Contract record no.: X2024980003927 Denomination of utility model: Hydrogen fuel cell exhaust emission system Granted publication date: 20200804 License type: Exclusive License Record date: 20240407 |