A valve combination structure with pressure reducer in front

Abstract

The invention provides a valve combination structure with a pressure reducer in front, and relates to the technical field of aerospace. The valve combination structure with the pressure reducer in front includes a base body and a pressure reducer set on the base body, a remote pressure relief valve and a booster check valve; the base body is also provided with a gas cylinder connector and a gas outlet nozzle, both It communicates through the air flow chamber inside the base body, the gas cylinder connector is used to connect the gas cylinder, and the gas outlet is used to discharge the gas entering the air flow chamber from the gas cylinder; the pressure reducer is used to control the pressure of the gas discharged from the gas outlet; the remote pressure relief valve is used It is used to realize the remote pressure relief of the gas cylinder; the booster check valve is used to realize the pressure of the gas cylinder. The combined structure of the pressure reducer provided by the present invention integrates the pressure reducer, the remote pressure relief valve, the booster check valve, the gas cylinder joint and the gas outlet through the substrate, that is, the common substrate forms a combined valve, reducing The welding structure is improved, the installation process of the gas pipeline valve is improved, and the reliability of the system is improved.

Description

technical field [0001] The invention relates to the technical field of aerospace, in particular to a valve combination structure with a pressure reducer in front. Background technique [0002] In the extrusion conveying system of the rocket engine, the pressure reducer is often used to control the pressure of the air pillow in the storage tank. Each functional component in the gas pipeline valve is independently set and connected through the connecting pipeline. [0003] Since each valve component in the rocket engine is independently set, the connecting pipeline is often made of stainless steel welded structure to realize the connection between the various valve components. However, the stainless steel welded structure is prone to failure under high pressure and vibration environment, resulting in the failure of the launch mission. SUMMARY OF THE INVENTION [0004] In order to overcome the deficiencies in the prior art, the present application provides a valve combination...

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Problems solved by technology

[0004] In order to overcome the deficiencies in the prior art, this application provides a valve combination structure with the pressure reducer in front, which is used to solve the problem in the prior art that the connecting pipelines often adopt stainless steel welded structures, which are prone to failure under high pressure and vibration environments , a technical problem that caused the launch mission to fail

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