Cyclone-type cycling filtration gas-water separation device for fuel cell system

Abstract

The invention provides a cyclone-type cycling filtration gas-water separation device for a fuel cell system, which comprises a shell and a cyclone cycling filtration part, wherein the shell comprises an upper cover and a can body connected to the upper cover; the upper end of the upper cover is provided with an inlet; the side wall of the upper cover is provided with an outlet; the inner part of the can body has a hollow structure; the can body is communicated with the inlet and the outlet; the lower end of the can body is provided with a drain port; the cyclone cycling filtration part is mounted below the upper cover, and comprises a plurality of guide vanes, an air outlet, a plurality of overflow ports and a beam tube ; the inside of the beam tube is a hollow structure; the air outlet is connected to the upper end of the beam tube and is communicated with the inner part of the beam tube; the guide vanes are uniformly arranged at the upper end of the beam tube along the outer side of the air outlet in a spiral shape; and the overflow ports are opened at the upper end of the beam tube and are arranged along the side wall of the upper end of the beam tube. The gas-water separation efficiency is high, and the operation is safe and reliable.

Description

technical field [0001] The invention relates to the technical field of gas-water separation, in particular to a cyclone-type circulating filter gas-water separation device for a fuel cell system. Background technique [0002] my country's fuel cell vehicle-related system technology and industrial chain are not yet mature, and various parts and components need to be developed and optimized. In the fuel cell system, the metering ratio of the supplied hydrogen is greater than 1, and the unreacted hydrogen forms a circulating gas circuit. The closed cycle makes the liquid water produced by the fuel cell stack reaction exist in the pipeline, which needs to be discharged regularly. Therefore, in the fuel cell system, it is necessary to use a compact structure, a certain water storage capacity, and an efficient gas-water separator to separate the liquid water in the pipeline, so as to ensure the high performance of the fuel cell. [0003] Existing air-water separators for vehicles...

AI Technical Summary

Problems solved by technology

[0003] Existing air-water separators for vehicles mainly use filter elements to filter, referring to the air-water separators used in air compressors, the top of the filter element is equipped with axial guide vanes arranged along the outer diameter of the filter element, but the guide vanes of this type The flow effect is very limited and cannot form a sufficient swirling air flow to promote the separation of liquid droplets from the gas

And under different working conditions, when the gas flow rate is changed, especially when the gas flow rate is increased, the separation effect is unstable or reduced, so that there is still a certain amount of liquid water in the hydrogen pipeline, which affects the working performance of the fuel cell stack

The use of the filter element also increases the resistance of the hydrogen circulation and increases the energy consumption, and the filter element will freeze in low temperature environment, which may cause the fuel cell engine to fail at low temperature and cold start

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