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Gas-water separation assembly, fuel cell hydrogen circulation system and application

A technology for separating components and fuel cells, which is applied in fuel cells, power system fuel cells, electrical components, etc., can solve the problems of large resistance loss of gas-water separator, ejector cannot work, and increase of system components, etc. Power Range Requirements, Volume and Weight Reduction, Effect of Strong Water Separation Performance

Active Publication Date: 2020-12-11
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the fuel cell hydrogen circulation system using a single ejector, the ejector cannot work in a wide power range, and the resistance loss of the gas-water separator in the system is also relatively large
If multiple ejectors are used to work together to broaden the applicable power range of the ejector, the number of system components will increase, the control will become complicated, and the reliability will be reduced.

Method used

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  • Gas-water separation assembly, fuel cell hydrogen circulation system and application
  • Gas-water separation assembly, fuel cell hydrogen circulation system and application
  • Gas-water separation assembly, fuel cell hydrogen circulation system and application

Examples

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Embodiment

[0054] System components include: hydrogen cylinder 1, stop valve 2, pressure reducing valve 3, second hydrogen injection valve 4, first hydrogen injection valve 5, ejector 6, gas-water separation assembly 7, fuel cell stack 8, drain valve 9 . The battery stack inlet 92 and the battery stack outlet 91 . High-pressure fresh hydrogen F1, the gas-liquid mixture F2 discharged from the stack, and the gas F3 from which the liquid droplets are separated. The structure of the ejector separator includes a nozzle 71 , a main body 72 , a swirl vane 73 , a gas-liquid mixture inlet 74 , an exhaust pipe 75 and a drain pipe 76 .

[0055] image 3 , is the system proposed in this scheme. The high-pressure hydrogen cylinder 1 stores high-pressure hydrogen as the fuel of the fuel cell stack 8, and after passing through the cut-off safety valve 2 and the pressure reducing valve 3, it is supplied to the ejector 6 (or Injector separator) has fresh hydrogen F1 with a certain pressure value. Th...

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Abstract

The invention belongs to the technical field of fuel cells, and particularly relates to a gas-water separation assembly, a fuel cell hydrogen circulation system and application. At present, for a fuelcell hydrogen circulation system using a single ejector, the ejector cannot work in a wide power range, and meanwhile, the resistance loss of a gas-water separator in the system is relatively large.If a plurality of ejectors are used for jointly working to broaden the applicable power range of the ejectors, system components are increased, control becomes complex, and reliability is reduced. Theinvention provides a gas-water separation assembly which comprises a main body, a nozzle is arranged at one end of the main body, the nozzle is connected with a swirl vane, and a gas-liquid mixture inlet is formed in one end of the main body. An exhaust pipe and a drain pipe are arranged at the other end of the main body. Part of the ejection function is achieved, and the working range of the ejector is widened; A traditional gas-water separator is replaced, and the gas-water separation assembly has the advantages of being small, compact, small in pressure loss and beneficial to improving theperformance of the ejector.

Description

technical field [0001] The application belongs to the field of fuel cell technology, and in particular relates to a gas-water separation component, a fuel cell hydrogen circulation system and its application. Background technique [0002] Hydrogen fuel cells can directly convert the chemical energy of hydrogen into electrical energy without combustion. It has the advantages of high efficiency and power density, zero emissions, and silent operation. It is a very promising new energy power generation device. The hydrogen fuel cell chemically reacts the hydrogen on the anode side and the oxygen on the cathode side to generate electricity and water. In order to ensure the high-efficiency operation of the fuel cell, the amount of hydrogen supplied to the anode side is greater than the amount of hydrogen reacted, so it is necessary to establish an anode hydrogen circulation system To recycle the unconsumed hydrogen to improve the utilization rate of hydrogen. [0003] In the hydr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D45/16B01D53/26B01F5/04H01M8/04089
CPCB01D45/16B01D53/265H01M8/04097H01M2250/20B01F25/31252B01F25/31243Y02E60/50
Inventor 冯健美韩济泉彭学院
Owner XI AN JIAOTONG UNIV
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