Cryogenic plate valve

Abstract

The invention relates to an ultra-low temperature plate valve which comprises a valve body, a lengthened valve cap, a valve rod, a valve plate, a valve base, a bracket, a handwheel and a direction rod, wherein a cavity channel serving as a medium flow passage is formed coaxially and horizontally inside the valve body; the lengthened valve cap is fixedly mounted at the vertical upper end of the valve body coaxially; the valve rod is mounted in the middle of the valve body vertically; the valve plate is coaxially and fixedly mounted at the lower end of the valve rod inside the valve body; the handwheel is coaxially mounted on the valve rod of which the upper end extends out of the upper end of the lengthened valve cap; compression springs are mounted the on the contact surface of the outer circumference of the valve seat and the valve body; a low-temperature-resistant energy-storage seal ring is mounted on the convex shoulder contact surface between the valve seat and the valve body. The ultra-low temperature plate valve solves the technical problems of sealing and heavy on / off torque under the condition of ultra-low temperature and high-pressure medium; the plate valve is scientific in design, simple in structure, high in working pressure, reliable in sealing property, light in on / off torque, and long in service life, so as to be widely applied to various working conditions of ultra-high pressure and ultra-low temperature.

Description

technical field [0001] The invention belongs to the field of valves, in particular to an ultra-low temperature flat valve. Background technique [0002] The ultra-low temperature flat valve is a valve with a parallel gate sealing structure. At present, the flat valve can be divided into manual, pneumatic, electric, hydraulic, electro-hydraulic and so on according to different driving methods. For the special working conditions in the harsh environment of ultra-high temperature and ultra-low temperature, it is difficult to solve technical problems such as sealing under the action of ultra-low temperature and high-pressure medium, and heavy opening and closing torques. [0003] After searching, the following similar patent documents were found. [0004] An ultra-high temperature resistant horizontally arranged gate valve (CN102705521A), which mainly includes: a valve body, which is composed of a main valve body and an auxiliary valve body; a valve plate, installed in the valv...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an ultra-low temperature flat valve with scientific design, simple structure, high working pressure, reliable sealing performance, light switching torque and long service life, which solves the problem of low temperature and high pressure valves. Technical issues such as sealing and switching torque under the action of medium

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