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

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...

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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.

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