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...

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