High-integration integrated low-temperature stop valve with one-way function

Abstract

The invention discloses a high-integration integrated low-temperature stop valve with a one-way function. The valve comprises a valve body of the stop valve, a one-way valve, a first connecting pipe,a second connecting pipe, a valve deck and a hand wheel, all the components are highly integrated on the valve body, the one-way valve is connected to the valve body through straight threads, one endof the first connecting pipe is welded to the valve body, the other end is welded to a cylinder return port, the second connecting pipe is welded to the other end of the valve body, the first connecting pipe, the second connecting pipe and the one-way valve are connected to the valve body in a T-shaped structure, the hand wheel is in threaded connection to the valve body, a valve rod and a valve clack are arranged in the valve body, one end of the valve deck is embedded above the valve body, a valve rod installation hole is formed inside the valve clack, one end of the valve rod is arranged inthe valve rod installation hole, and the other end of the valve rod penetrates through the valve deck and is embedded into the hand wheel.

Description

technical field [0001] The invention belongs to the technical field of valves, and is used for a gas supply system for liquefied natural gas vehicles, in particular to a gas return cut-off valve and a booster pipe on a gas cylinder on a gas supply system pipeline of a side-mounted gas supply system for trucks and passenger cars using LNG as fuel The invention relates to a connection structure of a one-way check valve, in particular to a highly integrated integrated low-temperature stop valve with a one-way function. Background technique [0002] The gas supply system of LNG vehicles is mainly composed of LNG cylinders, liquid filling pipeline system, liquid supply pipeline system, self-pressurization pipeline system and so on. Among them, the self-pressurization pipeline system is an important part of the LNG vehicle gas supply system. It is composed of a pressure regulating valve, an external supercharger (vaporization component), etc. At the same time, the standard requi...

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Problems solved by technology

[0005] In view of the above existing problems, the present invention provides a method to overcome the defects in the prior art and provide a brand new, safe and breakthrough cryogenic cut-off valve, which has a high degree of integration and realizes the integration, integration, Multifunctional, can solve the complex structure of the return air stop valve and check valve in the pressurization pipeline of the existing air supply system, which is easy to interfere, resulting in poor pressurization effect, more leakage points, unfavorable operation, labor cost and procurement high cost problem

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