Hydrogen supply combination valve with flow regulation and pressure stabilization functions

Abstract

The invention provides a hydrogen supply combination valve with flow adjusting and pressure stabilizing functions, and belongs to the field of valves. The hydrogen supply combination valve comprises a first-stage pressure reducing valve, a second-stage pressure reducing flow regulating valve and a second-stage pressure reducing regulating valve. Wherein the first-stage pressure reducing valve achieves the main throttling and pressure reducing effects, and high-pressure hydrogen is subjected to first-stage pressure reducing; the second-stage pressure reduction flow regulating valve can be used for further performing second-stage pressure reduction on the hydrogen subjected to the first-stage pressure reduction, and flow regulation can be realized; the second-stage pressure reduction adjusting valve can further conduct second-stage pressure reduction on the hydrogen obtained after first-stage pressure reduction, disturbance to the final outlet hydrogen pressure in the flow adjusting process of the second-stage pressure reduction flow adjusting valve is buffered by continuously outputting hydrogen with the stable flow and pressure, and it is guaranteed that the outlet pressure is stable while the flow is adjusted. On the premise of achieving two-stage pressure reduction and stabilization and integration of the hydrogen combination valve, the output flow of the hydrogen supply combination valve can be adjusted, and power change of vehicle-mounted hydrogen supply can be achieved.

Description

technical field [0001] The invention belongs to the field of valves, in particular to a combined hydrogen supply valve with functions of flow regulation and voltage stabilization. Background technique [0002] The high-pressure hydrogen storage cylinder is used to store high-pressure gaseous hydrogen with a temperature above the critical temperature. The ideal hydrogen supply combination valve needs to achieve two functions: the first aspect is to reduce the hydrogen pressure to the rated range; the second aspect is to accurately control the hydrogen flow , can achieve stable pressure reduction, and control the flow rate as needed. At present, in order to ensure that the hydrogen pressure entering the fuel cell is within the normal range and prevent overpressure during the hydrogenation process, double pressure reducing valves can be used to reduce the pressure, and the output pressure is relatively stable, but when the pressure remains unchanged Regulating flow is difficul...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the pressure-reducing valve in the prior art cannot meet the two technical requirements of stabilizing the output pressure and adjusting the hydrogen flow rate at the same time, thereby providing a hydrogen supply combined valve with the functions of flow adjustment and pressure stabilization

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