A fuel cell hydrogen supply system integrating a hydrogen circulation pump and an ejector in parallel

Abstract

A fuel cell hydrogen supply system integrated in parallel with a hydrogen circulation pump and an ejector, comprising a hydrogen circulation pump and an ejector, the ejector being fixedly installed at the hydrogen pump inlet and the hydrogen pump outlet of the hydrogen circulation pump Integrated with the hydrogen circulation pump, the inlet of the hydrogen pump is connected to the low-pressure area in the ejector, and the outlet of the hydrogen pump is connected to the high-pressure area in the ejector. The invention integrates the hydrogen circulation pump and the ejector into one body without on-site assembly, easy to operate during installation, high installation efficiency, small volume, and small space occupation. The hydrogen circulation pump and the ejector are directly connected, and the hydrogen circulation pump comes out The pressurized gas directly enters the ejector, the transmission distance is short, the transmission loss is eliminated, and the boosting efficiency is greatly improved; the overall structure has good stability, strong rigidity, small vibration and low noise during work, and the overall performance is improved.

Description

Technical field: [0001] The invention relates to a fuel cell hydrogen supply system in which a hydrogen circulation pump and an ejector are connected in parallel and integrated. Background technique: [0002] At present, the commonly used hydrogen circulation devices include ejectors and hydrogen circulation pumps. At present, all ejectors and hydrogen circulation pumps in the industry are split and used separately. This structure has the following disadvantages when used: [0003] (1) On-site assembly is required during installation, and the pipeline connection is complicated. Two sets of pipelines are required to connect the two, which is troublesome to operate and low in installation efficiency; [0004] (2) The ejector and the hydrogen circulation pump are set separately, which is large in size and takes up a lot of space, so it is not easy to install and use in some areas with small space; [0005] (3) The hydrogen circulation pump and the ejector are connected through...

AI Technical Summary

Problems solved by technology

[0008] In order to make up for the deficiencies of the prior art, the present invention provides a fuel cell hydrogen supply system that integrates a hydrogen circulation pump and an ejector in parallel, which solves the problems of on-site assembly, complicated pipeline connections, troublesome operation, and low installation efficiency. It solves the problem of large volume and large space occupation of the previous split structure, solves the problems of long transmission distance, loss during transmission, and reduced supercharging efficiency of the previous split structure, and solves the problem of the previous split structure Problems of poor structural stability, large vibration and high noise

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