Bypass valve and fluid cut-off equipment

Abstract

The invention provides a bypass valve and fluid cut-off equipment, and relates to the technical field of pipeline accessory equipment. The valve comprises a valve body, a valve base, a flashboard anda bypass. A first bypass part and a third bypass part are arranged at the two ends of the valve body relative to the flashboard respectively, a second bypass part is arranged between the first bypasspart and the third bypass part, and liquid in the valve body can pass through the first bypass part or the third bypass part and the second bypass part so as to achieve circulation of the liquid, so that the pressure difference between the two sides of the flashboard relative to the flashboard is reduced; the technical problems that in the prior art, the valve body and the flashboard bear too muchpressure, the valve body and the flashboard are thus easy to damage, the service life of the valve is reduced and the operation torque of a main valve is increased are reduced; the situation that thepressure of the two sides of the flashboard of the valve is very large is reduced, the pressure difference on the two sides of the flashboard of the valve is reduced, the valve body is protected, theservice life of the valve is prolonged, the operation torque of the main valve is reduced, the valve is thus more convenient to open, the efficiency is improved, and the valve is more practical.

Description

Technical field [0001] The invention relates to the technical field of pipeline accessory equipment, in particular to a bypass valve and fluid cut-off equipment. Background technique [0002] Valve is used to open and close the pipeline, control the flow direction, adjust and control the parameters (temperature, pressure and flow) of the conveying medium. It is a control component in the fluid conveying system. It has cut-off, regulation, diversion and prevention of backflow. , Pressure stabilization, diversion or overflow pressure relief functions, can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. [0003] The valve used to control fluid in the current technology generally cuts off the fluid in the valve body through a gate, thereby achieving the function of blocking and diversion. [0004] However, the valve in the prior art only uses the gate to control the flow in the valve...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a bypass valve and a fluid cut-off device, so as to alleviate the excessive pressure on the valve body and gate plate in the prior art, resulting in easy damage, reducing the service life of the valve, and increasing the main valve. Technical problems of operating torque

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