Hydrogen ejector and hydrogen nozzle structure

Abstract

The invention discloses a hydrogen injector and a hydrogen nozzle structure. The hydrogen ejector comprises a hydrogen nozzle, a hydrogen spraying body, a high-pressure sensor and a medium-pressure sensor. The hydrogen nozzles include a main nozzle and a bypass nozzle. The hydrogen spraying body is divided into a high-pressure cavity, a medium-pressure cavity and a low-pressure cavity through the multiple main nozzles and the multiple bypass nozzles. The hydrogen spraying body can be of an integral type or split type structure, and the opening number and the spraying time of a hydrogen nozzle needle valve are controlled in a coordinated mode by collecting working condition data of a fuel cell and monitoring pressure. By adopting different forms of sealing structures, different structures of hydrogen nozzles and coordinated injection of a plurality of hydrogen nozzles, the problems of poor stability, slow response speed and poor sealing performance of a hydrogen injector under high-pressure and large-flow working conditions in a high-power fuel cell system are solved; the problems that a hydrogen nozzle runner is prone to being blocked, a sealing piece is prone to being damaged, and water is prone to being accumulated in a hydrogen spraying body are solved, the service life of an electromagnetic coil of the ejector is prolonged, and stable flow output is achieved.

Description

technical field [0001] The invention relates to the technical field of new energy, in particular to a structure of a hydrogen injector and a hydrogen nozzle. Background technique [0002] The fuel cell system consists of a fuel cell stack, a hydrogen supply system, an air supply system, etc. The hydrogen supply system includes hydrogen storage bottles, pressure reducing valves, hydrogen injectors, hydrogen injectors and other components. The hydrogen injector is an important part of the hydrogen supply system, which affects the reaction efficiency in the fuel cell stack and the recycling rate of residual hydrogen. More mature hydrogen injectors are mainly concentrated in low-power fuel cell systems, while high-pressure, high-flow hydrogen injectors suitable for high-power fuel cell systems are not yet at a mature stage. [0003] With the gradual maturity of the fuel cell technology, the output power of the fuel cell is gradually increasing, and the requirements for the work...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a hydrogen injector and a hydrogen nozzle structure, the first purpose of which is to prevent the occurrence of problems such as easy blockage of the flow channel of the hydrogen nozzle, easy damage of the seal, and easy accumulation of water in the hydrogen spray body.

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