Integrated pressure reducing valve

Abstract

The invention discloses an integrated pressure reducing valve. The integrated pressure reducing valve comprises a valve body, an inlet and an outlet located outside the valve body, and a pressure reducing system located inside the valve body, wherein the inlet is in fluid communication with a gas source outlet of a hydrogen fuel cell electric vehicle, and the outlet is in fluid communication witha downstream electric reactor of the hydrogen fuel cell electric vehicle; and a pressure reducing system comprises a first-stage pressure reducing valve and a second-stage pressure reducing valve which are located between the inlet and the outlet and are in fluid sequence communication, and the first-stage axis of the first-stage pressure reducing valve and the second-stage axis of the second-stage pressure reducing valve are vertically arranged. According to the integrated pressure reducing valve, the two-stage pressure reducing system is arranged, so that the stability of outlet pressure isguaranteed, meanwhile, the two stages of the pressure reducing valves are vertically arranged, so that the size of main body structure is optimized while the pressure adjustment is further improved, and more compact structure is formed.

Description

technical field [0001] The invention relates to an integrated pressure reducing valve, in particular to an integrated pressure reducing valve used in a hydrogen supply system of a fuel cell. Background technique [0002] With the growing automobile industry, there are more and more types of vehicles, among which the development of electric vehicles is particularly rapid. As a relatively core technical field in the field of electric vehicles, electric vehicles using hydrogen as fuel cells have gradually become a major direction of technology development and market expansion. [0003] Different from traditional energy vehicles or pure lithium battery charging vehicles, the gas supply system of hydrogen fuel cell electric vehicles is connected with a certain pressure of hydrogen gas source and fuel cell stack system, which has a relatively complex structure and high safety requirements. Technical characteristics, so the air supply system of the prior art adopts multiple parts ...

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Problems solved by technology

[0003] Different from traditional energy vehicles or pure lithium battery charging vehicles, the gas supply system of hydrogen fuel cell electric vehicles is connected with a certain pressure of hydrogen gas source and fuel cell stack system, which has a relatively complex structure and high safety requirements. Technical characteristics, so the gas supply system of the prior art adopts multiple parts and separate parts, its structure is relatively complex, the external size is large, and the response time of adjustment is long, and the reliability is low

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