A water-gas separation device and fuel cell system

Abstract

The invention discloses a water-gas separation device and a fuel cell system, which belong to the technical field of fuel cells. The water-gas separation device includes a separator and a pipeline assembly. The gas port, the mixed fluid inlet is located on the side wall of the separator, the gas outlet is located at the top of the separator, the liquid outlet is located at the bottom of the separator, the exhaust port is located at the top of the separator, and the side wall of the separator is also provided with a first collector Road, the first collector extends along the length of the separator; the pipeline assembly includes a connected first pipeline and a second pipeline, the second pipeline and the first pipeline are set at an angle, and the second pipeline It communicates with the mixed fluid inlet; the first collecting channel is located downstream of the mixed fluid inlet, and is set close to the mixed fluid inlet. The water-gas separation device and the fuel cell system provided by the invention can occupy less space, are convenient to be used in equipment with high space requirements, and can reduce the pressure drop of the mixed fluid.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a water-gas separation device and a fuel cell system. Background technique [0002] At present, in order to ensure the normal progress of the electrochemical reaction of the proton exchange membrane in the hydrogen-fueled fuel cell stack, it is necessary to continuously provide high-purity hydrogen with a certain pressure and flow rate to the stack. Moreover, during the working process of the stack, there will be incomplete reaction, so that part of the hydrogen does not participate in the reaction, but is recycled and reused through the hydrogen circulation system. [0003] Unreacted hydrogen is usually mixed in liquid water, water vapor and part of the nitrogen permeated from the air side (cathode) to form a mixed fluid. In order to ensure the reaction efficiency of the hydrogen fuel cell and the normal operation of other parts of the anode, it is necessary to restart the mi...

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Problems solved by technology

However, since multiple swirl vanes need to be arranged in the casing, the casing needs to occupy a large volume, which in turn leads to a large volume of the water-air separator, which is not convenient to be installed in a system with limited space such as a vehicle. The method of separating water and gas by the flow sheet also leads to a large pressure drop of the mixed fluid as a whole, which is not conducive to the reuse of the separated gas

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