PE gas ball valve with steel frame

Abstract

The invention relates to the technical field of ball valves, and more particularly relates to a PE gas ball valve with a steel frame. The PE gas ball valve comprises a valve body, two end tubes arranged at both ends of the valve body, a ball core arranged in a cavity of the valve body, a stem and a screw connecting seat arranged at the top of the valve body; one end of the stem is connected to theball core, and the other end of the stem extends from the valve body and is connected to the screw connecting seat; and the valve body is the PE valve body with the valve body steel frame embedded, and each end tube is the PE end tube with an end tube steel frame embedded. On the one hand, the embedded valve body steel frame and the end tube steel frame make the gas ball valve have a certain rigidity, and the ball valve resistance to high pressure is improved; and on the other hand, the corrosion resistance of the gas ball valve is ensured through the PE valve body and PE end tubes which wrapthe steel frame, and the service life of the gas ball valve is prolonged.

Description

technical field [0001] The invention relates to the technical field of ball valves, in particular to a PE gas ball valve with a steel skeleton. Background technique [0002] Gas ball valve is an indispensable switch device for gas pipeline installation to realize the flow switch control of gas. The gas ball valves currently used mainly include metal and PE (polyethylene). Traditional metal gas ball valves have excellent mechanical properties and can meet the requirements of compressive performance. However, metals have poor chemical properties in gas corrosive environments and are easily damaged. Corrosion, and it is difficult to connect with the plastic pipe network; although the traditional PE (polyethylene) gas ball valve has excellent chemical properties, but the rigidity is small, the wall thickness of the gas ball valve is increased to improve the PE (polyethylene) gas ball valve. Increase the compressive strength, increase the wall thickness and increase the volume o...

AI Technical Summary

Problems solved by technology

The gas ball valves currently used mainly include metal and PE (polyethylene). Traditional metal gas ball valves have excellent mechanical properties and can meet the requirements of compressive performance. However, metals have poor chemical properties in gas corrosive environments and are easily damaged. Corrosion, and it is difficult to connect with the plastic pipe network; although the traditional PE (polyethylene) gas ball valve has excellent chemical properties, but the rigidity is small, the wall thickness of the gas ball valve is increased to improve the PE (polyethylene) gas ball valve. High compressive strength, increasing the wall thickness increases the volume of the gas ball valve, which is not conducive to handling and installation

There is a patent that proposes the use of steel-plastic composite three-layer gas ball valve, which meets the needs of performance to a certain extent, but the layered structure makes it impossible to combine steel and plastic, which will seriously cause the inner or outer plastic of the gas ball valve to fall off. The security needs of actual use cannot be guaranteed

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