CN111816895A - Device for keeping pressure stability of hydrogen path of hydrogen fuel cell - Google Patents

Device for keeping pressure stability of hydrogen path of hydrogen fuel cell Download PDF

Info

Publication number
CN111816895A
CN111816895A CN202010678551.9A CN202010678551A CN111816895A CN 111816895 A CN111816895 A CN 111816895A CN 202010678551 A CN202010678551 A CN 202010678551A CN 111816895 A CN111816895 A CN 111816895A
Authority
CN
China
Prior art keywords
hydrogen
pressure
housing
fuel cell
valve
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.)
Withdrawn
Application number
CN202010678551.9A
Other languages
Chinese (zh)
Inventor
罗映
赵宗凯
罗全巧
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Promote Electromechanical Technology Co ltd
Original Assignee
Shandong Promote Electromechanical Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shandong Promote Electromechanical Technology Co ltd filed Critical Shandong Promote Electromechanical Technology Co ltd
Priority to CN202010678551.9A priority Critical patent/CN111816895A/en
Publication of CN111816895A publication Critical patent/CN111816895A/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04746—Pressure; Flow
    • H01M8/04776—Pressure; Flow at auxiliary devices, e.g. reformer, compressor, burner
    • 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

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

A device for keeping the pressure stability of a hydrogen path of a hydrogen fuel cell is used for realizing the precise control and regulation of the pressure of the hydrogen path of the hydrogen fuel cell. It includes: the middle part of the shell is provided with an air inlet and an air outlet; and the pressure stabilizing mechanism is arranged in the inner cavity of the shell and is used for ensuring that the air outlet has stable air pressure. According to the invention, the pressure stabilizing mechanism can unload the pressure at the air outlet when the pressure at the air inlet is increased, hydrogen enters the buffer cavity, and the increased air pressure is applied to the pressure stabilizing mechanism, so that the air pressure at the air outlet is kept stable.

Description

Device for keeping pressure stability of hydrogen path of hydrogen fuel cell
Technical Field
The invention relates to the technical field of hydrogen fuel cells, in particular to a device for keeping the pressure stability of a hydrogen path of a hydrogen fuel cell.
Background
In a hydrogen fuel cell, oxygen molecules in the hydrogen gas act to chemically react with the hydrogen molecules to produce electrical energy. Therefore, the hydrogen gas path system is a continuous gas supply system in the hydrogen fuel cell, the sealing performance, resistance change, flow rate of carrier gas, pressure fluctuation and the like of the system have great influence on the stability of the hydrogen fuel cell, and simultaneously, the data result of qualitative and quantitative analysis of the hydrogen fuel cell can be greatly influenced. Therefore, in the hydrogen fuel cell, the pressure of the hydrogen path must be precisely controlled and adjusted.
Disclosure of Invention
The invention aims to provide a device for keeping the pressure stability of a hydrogen path of a hydrogen fuel cell, which is used for realizing the precise control and regulation of the pressure of the hydrogen path of the hydrogen fuel cell.
The technical scheme adopted by the invention for solving the technical problems is as follows: an apparatus for maintaining pressure stability in a hydrogen path of a hydrogen fuel cell, comprising:
the middle part of the shell is provided with an air inlet and an air outlet;
and the pressure stabilizing mechanism is arranged in the inner cavity of the shell and is used for ensuring that the air outlet has stable air pressure.
The pressure stabilizing mechanism comprises a needle valve, a valve rod, a spring seat, a spring and a handle, the handle is arranged at the right end of the shell, the spring seat is arranged in an inner cavity at the right end of the shell, the spring is arranged between the spring seat and the handle, the valve rod is fixed on the spring seat, the left end of the valve rod penetrates through a communication port in the middle of the shell and then extends into the inner cavity at the left end of the shell, a sealing block for sealing the communication port is arranged at the right end of the valve rod, the valve rod is relatively and fixedly connected with the needle valve, and the right end of the needle valve corresponds to the air inlet and is used for extending into one section; the sealing block is arranged in the communicating opening under the action of the spring, and the needle valve is arranged outside the air inlet.
Further, the handle and the shell are relatively fixed, and the handle can be adjusted left and right relative to the shell.
Furthermore, a valve seat is arranged in the inner cavity at the left end of the shell, and the needle valve and the valve rod are vertically arranged and fixed on the valve seat.
Furthermore, the air inlet is of an L-shaped structure, the right end of the needle valve and the transverse part of the air inlet are positioned on the same straight line, and the right end of the needle valve is conical.
Furthermore, a corrugated pipe is arranged in the inner cavity at the right end of the shell, and the spring seat is fixedly connected with the inner side of the corrugated pipe, so that a buffer cavity is formed among the corrugated pipe, the spring seat and the middle part of the shell.
The invention has the beneficial effects that: according to the device for maintaining the pressure stability of the hydrogen path of the hydrogen fuel cell, the pressure stabilizing mechanism is arranged to unload the pressure at the gas outlet when the pressure at the gas inlet is increased, hydrogen enters the buffer cavity at the moment, and the increased pressure is applied to the pressure stabilizing mechanism, so that the pressure at the gas outlet is kept stable.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for maintaining pressure stability in a hydrogen line according to the present invention;
in the figure: the valve comprises a valve seat 1, a needle valve 2, a bellows 3, a spring 4, a handle 5, a valve rod 6, a sealing block 61, a shell 7, an air inlet 71, an air outlet 72, a left end inner cavity 73, a right end inner cavity 74, a communication port 75, a buffer cavity 76 and a spring seat 8.
Detailed Description
As shown in fig. 1, the device for maintaining the pressure stability of the hydrogen path of the present invention comprises a valve seat 1, a needle valve 2, a bellows 3, a spring 4, a handle 5, a valve stem 6 and a housing 7, and the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the housing 7 is a basic component of the present invention, the housing is a hollow structure with two small ends and a large middle part, the middle part of the housing is provided with an air inlet 71 and an air outlet 72, the air inlet is an "L" shaped structure, the vertical part of the air inlet and the air outlet are positioned on the same straight line, and the air inlet and the air outlet are communicated through the inner cavity of the left end of the housing. The hydrogen enters the inner cavity of the shell through the air inlet and then flows out of the shell through the air outlet. When the air pressure of the air inlet is increased, the air pressure of the air outlet is also increased. In order to ensure the stability of the air pressure at the air outlet, a pressure stabilizing mechanism is arranged at the right end of the inner cavity of the shell, as shown in fig. 1, the pressure stabilizing mechanism comprises a valve seat 1, a needle valve 2, a corrugated pipe 3, a spring 4, a handle 5 and a valve rod 6, the valve seat 1 is substantially a plate, the needle valve 2 and the valve rod 6 which are arranged up and down are fixed on the valve seat, the first end of the needle valve is fixedly connected with the valve seat, and the second end of the needle valve is conical. The first end and the disk seat fixed connection of valve rod, the second end of valve rod is equipped with sealed piece 61. The second end of the needle valve faces the transverse part of the air inlet, and the second end of the needle valve can move towards one side where the transverse part of the air inlet is located, so that the air inlet is blocked to a certain degree. A communication port 75 is provided between the left end chamber 73 of the housing and the right end chamber 74 of the housing. When the sealing block is arranged in the communicating port, the communicating port can be blocked, and the left end of the shell is separated from the right end of the shell.
The bellows 3 is arranged in the inner cavity at the right end of the shell, the spring seat 8 is arranged on the inner side of the bellows, and the spring seat is fixedly connected with the inner side of the bellows. Thus, a variable volume buffer chamber 76 is formed between the bellows, the spring seat and the middle of the housing, and communicates with the left-end inner chamber through a communication port. The spring seat is fixedly provided with a spring 4 which is transversely arranged, the first end of the spring is fixedly connected with the spring seat, the second end of the spring is fixedly connected with a handle 5, the handle and the shell are connected in an adjustable mode, the adjustable meaning means that the handle and the shell can be relatively fixed, and the handle can move left and right relative to the shell to further adjust the pre-tightening force of the spring. Under the effect of spring under natural state, in the intercommunication mouth was arranged in to the sealed piece, realized closing the intercommunication mouth, and then realized the wall of casing left end inner chamber and cushion chamber. The air pressure at the air inlet is P1, the air pressure at the air outlet is P3, and the air pressure at the communication port is P2. When the communication port is closed under the action of the sealing block, the air pressure P1 at the air inlet is equal to the air pressure P3 at the air outlet, and the air pressure P2 at the communication port is zero. When the hydrogen source of the air inlet is increased, the air pressure P1 of the air inlet is increased, hydrogen continuously enters the left end cavity through the air inlet and then moves to the air outlet, the pressure of the left end cavity is larger than the pre-tightening force of the spring, the spring is compressed under the action of the air pressure, and then the sealing block leaves the communication port and moves towards one side of the right end inner cavity. At this time, part of the hydrogen enters the buffer cavity, and the air pressure P2 at the communication port is increased, so that the pressure at the air outlet is unloaded. Meanwhile, the valve rod drives the valve seat to move towards the inner cavity of the right end, so that the needle valve is driven to move towards the air inlet, the air inlet is partially blocked, the air pressure P1 at the air inlet is reduced at the moment, and the pressure of a hydrogen gas source entering the shell tends to be stable. Due to the arrangement of the pressure stabilizing mechanism, the air pressure in the inner cavity at the left end of the shell can be adjusted, and the stability of the air pressure P3 at the air outlet is further ensured.
When air inlet hydrogen gas source reduces for air inlet internal gas pressure reduces, and casing left end inner chamber atmospheric pressure reduces this moment, and the valve rod drives sealed piece entering intercommunication mouth under the effect of spring this moment in, and then realizes the closure to the intercommunication mouth. When the position of the handle is adjusted, the pretightening force of the spring can be adjusted.
According to the device for maintaining the pressure stability of the hydrogen path of the hydrogen fuel cell, the pressure stabilizing mechanism is arranged to unload the pressure at the gas outlet when the pressure at the gas inlet is increased, hydrogen enters the buffer cavity at the moment, and the increased pressure is applied to the pressure stabilizing mechanism, so that the pressure at the gas outlet is kept stable.

Claims (6)

1. An apparatus for maintaining pressure stability in a hydrogen path of a hydrogen fuel cell, comprising:
the middle part of the shell is provided with an air inlet and an air outlet;
and the pressure stabilizing mechanism is arranged in the inner cavity of the shell and is used for ensuring that the air outlet has stable air pressure.
2. The apparatus of claim 1, wherein the pressure stabilizer comprises a needle valve, a valve rod, a spring seat, a spring, and a handle, the handle is disposed at the right end of the housing, the spring seat is disposed in the inner cavity of the right end of the housing, the spring is disposed between the spring seat and the handle, the valve rod is fixed on the spring seat, the left end of the valve rod extends into the inner cavity of the left end of the housing after passing through the communication port in the middle of the housing, the right end of the valve rod is provided with a sealing block for sealing the communication port, the valve rod is relatively fixedly connected to the needle valve, and the right end of the needle valve corresponds to the air inlet and extends into a section of the air inlet; the sealing block is arranged in the communicating opening under the action of the spring, and the needle valve is arranged outside the air inlet.
3. A device for maintaining pressure stability in a hydrogen gas path for a hydrogen fuel cell as claimed in claim 2, wherein the handle is fixed relative to the housing, and the handle is adjustable left and right relative to the housing.
4. A device for maintaining pressure stability in a hydrogen path of a hydrogen fuel cell as claimed in claim 2, wherein a valve seat is provided in the left end inner chamber of the housing, and the needle valve and the valve stem are disposed up and down and fixed to the valve seat.
5. An apparatus for maintaining pressure stability in a hydrogen path of a hydrogen fuel cell as claimed in claim 2, wherein the gas inlet has an "L" shape, a right end of the needle valve is aligned with a lateral portion of the gas inlet, and the right end of the needle valve is tapered.
6. A device for maintaining pressure stability in a hydrogen path of a hydrogen fuel cell as claimed in claim 2, wherein a bellows is provided in an inner chamber of a right end of the housing, and the spring seat is fixedly connected to an inner side of the bellows, so that a buffer chamber is formed between the bellows, the spring seat and a middle portion of the housing.
CN202010678551.9A 2020-07-15 2020-07-15 Device for keeping pressure stability of hydrogen path of hydrogen fuel cell Withdrawn CN111816895A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010678551.9A CN111816895A (en) 2020-07-15 2020-07-15 Device for keeping pressure stability of hydrogen path of hydrogen fuel cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010678551.9A CN111816895A (en) 2020-07-15 2020-07-15 Device for keeping pressure stability of hydrogen path of hydrogen fuel cell

Publications (1)

Publication Number Publication Date
CN111816895A true CN111816895A (en) 2020-10-23

Family

ID=72865023

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010678551.9A Withdrawn CN111816895A (en) 2020-07-15 2020-07-15 Device for keeping pressure stability of hydrogen path of hydrogen fuel cell

Country Status (1)

Country Link
CN (1) CN111816895A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113497255A (en) * 2021-06-30 2021-10-12 上海杰宁新能源科技发展有限公司 Precise flow channel titanium metal joint applied to hydrogen fuel cell

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101834300A (en) * 2009-03-13 2010-09-15 上海博能同科燃料电池系统有限公司 Pressure tracking and regulating device for proton membrane fuel cell power-supply system
CN204619108U (en) * 2015-04-23 2015-09-09 江西科技学院 A kind of oxygen absorption machine pressure maintaining valve
CN106151625A (en) * 2015-04-10 2016-11-23 天津华亨科技有限公司 A kind of reaction gas flow control system
KR20190074162A (en) * 2017-12-19 2019-06-27 (주)모토닉 Electronic regulator for 2-stage pressure reduction of hydrogen
CN209990967U (en) * 2019-04-15 2020-01-24 浙江海创阀门制造有限公司 Novel pressure stabilizing and reducing valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101834300A (en) * 2009-03-13 2010-09-15 上海博能同科燃料电池系统有限公司 Pressure tracking and regulating device for proton membrane fuel cell power-supply system
CN106151625A (en) * 2015-04-10 2016-11-23 天津华亨科技有限公司 A kind of reaction gas flow control system
CN204619108U (en) * 2015-04-23 2015-09-09 江西科技学院 A kind of oxygen absorption machine pressure maintaining valve
KR20190074162A (en) * 2017-12-19 2019-06-27 (주)모토닉 Electronic regulator for 2-stage pressure reduction of hydrogen
CN209990967U (en) * 2019-04-15 2020-01-24 浙江海创阀门制造有限公司 Novel pressure stabilizing and reducing valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113497255A (en) * 2021-06-30 2021-10-12 上海杰宁新能源科技发展有限公司 Precise flow channel titanium metal joint applied to hydrogen fuel cell

Similar Documents

Publication Publication Date Title
CN111816895A (en) Device for keeping pressure stability of hydrogen path of hydrogen fuel cell
CN110993991A (en) Characteristic simulation device and method for hydrogen supply loop of fuel cell
CN1699808A (en) Slide valve type pilot ultra-high pressure pneumatic proportional pressure-reducing valve
TWM573397U (en) Two-stage intake and two-stage exhaust structure of electronically controlled proportional valve
CN103109247A (en) Pressure regulators for feeding fuel, and fuel-supplying system comprising a regulating unit that consists of said pressure regulators
CN114233906A (en) Self-operated negative pressure regulating valve
CN2806924Y (en) Poppet valve pilot type ultra-high pneumatic proportional pressure-reducing valve
CN106121865B (en) A kind of solid rocket ramjet gas flow self-checking device
KR20100103990A (en) Fuel supply device for fuel cell system
CN202182222U (en) Piston type balanced self-reliance pressure-regulating valve
CN202946734U (en) Nitrogen-sealed valve
CN213332575U (en) Energy-saving gas pressure reducing valve
CN201715055U (en) Adjustable non-return pressure relief valve
CN214037019U (en) Adjusting valve group for maritime work machinery
CN111140667B (en) Two-section type air inlet and two-section type air exhaust structure of electric control proportional valve
CN209414629U (en) A kind of gas pressure regulating valve
CN115596857A (en) Valve is followed to mechanical adjustable formula pressure
CN219984310U (en) Energy-saving pressure swing adsorption gas making equipment
CN219671504U (en) Pressure reducing and stabilizing device for water supply system
CN112081973A (en) Lever type pressure reducing valve and regulating and controlling method thereof
CN218236264U (en) Gas pressure regulator commander capable of being finely adjusted
CN215451478U (en) Device for keeping pressure stability of hydrogen path of hydrogen fuel cell
CN219493067U (en) Electronic expansion valve for air conditioner refrigeration
CN213540586U (en) Pressure relief device for stabilizing mass flow to rocket engine gas supply
CN219035692U (en) Electric control bistable gas-air ratio regulating device

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
WW01 Invention patent application withdrawn after publication

Application publication date: 20201023

WW01 Invention patent application withdrawn after publication