Novel seal stop valve

Abstract

The invention relates to a new type of sealing globe valve in the field of valves, comprising an inlet end and an outlet end, the inlet end is provided with an inlet flange, the outlet end is provided with an outlet flange, and the inlet flange and the outlet flange are provided with bolt connection holes. A passage is provided between the inlet end and the outlet end, and it is characterized in that a through hole is arranged above the passage between the inlet end and the outlet end, and a sealing assembly is arranged in the through hole, and the sealing assembly includes a screw provided on the through hole, There is a rotating handle above the screw rod, the screw rod is fixed on the through hole through the fixing seat, and the screw rod and the fixing seat are connected by threads; the sealing assembly also includes a stop valve arranged below the through hole, and the left and right sides of the stop valve are located in the through hole. There is a sealing ring, and the sealing ring is set together with the stop valve. The contact surface of the stop valve and the sealing ring is an arc surface, and a bolt connection hole is arranged above the stop valve, and the screw rod and the stop valve are connected through the bolt connection hole; The liquid or gas is completely sealed, which greatly improves the sealing performance of the globe valve and prolongs the service life.

Description

technical field [0001] The invention relates to a novel sealing cut-off valve in the field of valves. Background technique [0002] The valve is a control component in the pipeline fluid delivery system, which is used to change the passage section and the flow direction of the medium, and has the functions of diversion, cut-off, throttling, check, diversion or overflow pressure relief; the valve used for fluid control, from There are various types and specifications of valves used in the simplest globe valves to extremely complex automatic control systems. The nominal diameters of the valves range from very small instrument valves to industrial pipeline valves with diameters up to 10m; they can be used in Control the flow of various types of fluids such as water, steam, oil, gas, mud, various corrosive media, liquid metals and radioactive fluids. The working pressure of the valve can be from 0.0013MPa to 1000MPa ultra-high pressure, and the working temperature can be from 27...

AI Technical Summary

Problems solved by technology

[0002] The valve is a control component in the pipeline fluid delivery system, which is used to change the passage section and the flow direction of the medium, and has the functions of diversion, cut-off, throttling, check, diversion or overflow pressure relief; the valve used for fluid control, from There are various types and specifications of valves used in the simplest globe valves to extremely complex automatic control systems. The nominal diameters of the valves range from very small instrument valves to industrial pipeline valves with diameters up to 10m; they can be used in Control the flow of various types of fluids such as water, steam, oil, gas, mud, various corrosive media, liquid metals and radioactive fluids. The working pressure of the valve can be from 0.0013MPa to 1000MPa ultra-high pressure, and the working temperature can be from 270 ℃ ultra-low temperature to 1430 ℃ high temperature; but in the actual application process, many valves will leak water or air after a long time of use, and cannot withstand long-term use

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