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A gas-water separation component, fuel cell hydrogen circulation system and application

A fuel cell and circulation system technology, applied in the direction of fuel cells, power system fuel cells, separation methods, etc., can solve the problems of large resistance loss of gas-water separators, inoperable ejectors, and increased system components, and achieve widening work. Range, volume and weight reduction, effect of strong water separation performance

Active Publication Date: 2021-12-10
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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  • A gas-water separation component, fuel cell hydrogen circulation system and application
  • A gas-water separation component, fuel cell hydrogen circulation system and application
  • A gas-water separation component, fuel cell hydrogen circulation system and application

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Embodiment

[0054] System components include: hydrogen cylinder 1, stop valve 2, pressure reducing valve 3, second hydrogen injection valve 5, first hydrogen injection valve 4, 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 fuel for 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 ejector separator) fresh hydrogen F1 with a certain pressure value. The ejecto...

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Abstract

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. 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. The application provides a gas-water separation assembly, which includes a main body, a nozzle is provided at one end of the main body, and the nozzle is connected with a swirl vane, and an inlet of a gas-liquid mixture is provided at one end of the main body; a drain is provided at the other end of the main body. Air pipe, the other end of the main body is provided with a drain pipe. It has a partial ejector function, which broadens the working range of the ejector; instead of the traditional gas-water separator, the advantages are small, compact, and small pressure loss, which is conducive to improving the performance 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 Patents(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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