Highly-integrated low-temperature stop valve with overflowing function

Abstract

A highly-integrated low-temperature stop valve with an overflowing function comprises an overflowing valve assembly, a connecting tube, a valve body, a valve cover and a hand wheel, wherein the overflowing valve assembly is connected to the valve body in an embedded mode through straight threads, so that a gas cylinder connecting pipeline is minimized, and the diameter of a valve passage is maximized; one end of the connecting tube is welded to the valve body, and the other end of the connecting tube is welded with a boosting liquid outlet of the gas cylinder; the hand wheel is in threaded connection to the valve body, and the valve body between the valve body and the overflow valve assembly is of a structure inclining outwards by 45 degrees, so that the hand wheel achieves the outward inclination angle of 135 degrees to the maximum degree.

Description

technical field [0001] The invention belongs to the technical field of valves, and relates to a pressurization system of a liquefied natural gas vehicle gas supply system, in particular to a pressurized liquid outlet stop valve on the pipeline of a side-mounted gas supply system of a truck and a passenger car using LNG as fuel. The connection structure of an overcurrent valve particularly relates to a highly integrated low-temperature cut-off valve with an overcurrent 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. The current self-pressurization pipeline system consists of a booster cut-off valve, an overflow valve, a booster regulating valve, and an external booster (vaporization component)...

AI Technical Summary

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 with overcurrent function, which has a high degree of integration and realizes the integration of cut-off valves. It is integrated, integrated and multi-functional, which can solve the complex structure of the pressurized outlet valve and overflow valve in the pressurized pipeline of the existing gas supply system, which is easy to interfere, resulting in poor pressurization effect, many leakage points, and no Conducive to the problem of high operation, labor cost and procurement cost

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