Noise-reducing and water-hammer-effect-reducing long-handle welding type valve ball and ball valve manufactured by valve ball

Abstract

The invention discloses a noise-reducing and water-hammer-effect-reducing long-handle welding type symmetrical valve ball and a ball valve manufactured by the valve ball. The ball valve comprises a first valve rod, a valve ball, a second valve rod and a valve body, wherein the first valve rod and the second valve rod are welded on the valve ball, and in addition, the first valve rod and the second valve rod are symmetrical and coaxial, and have the same length. The ball valve is characterized in that a noise reducing plate is welded in a flow passage of the valve ball, the noise reducing plate is provided with a plurality of noise reducing holes, the non-sealing surface of the valve ball is provided with a flow guide groove, and the first valve rod and the second valve rod respectively extend out of the valve body. The ball valve manufactured by the noise-reducing and water-hammer-effect-reducing long-handle welding type symmetrical valve ball has the advantages that the noise is reduced, and the water hammer effect is reduced.

Description

Technical field [0001] The invention belongs to a valve body assembly, and particularly relates to a long-handled welded valve ball with noise reduction and water hammer effect and a ball valve made thereof. Background technique [0002] Ball valve, as one of the commonly used valves in industry, is often used to open and cut off various industrial media. It has the characteristics of fast switching and tight closing. It is widely used in power plants, petrochemical industry, paper industry, aerospace, coal chemical industry, and environmental protection. [0003] The disadvantage of the ball valve in the prior art in industrial production use: when the fluid flows through the process pipeline at high speed, a lot of noise is generated at the ball valve. The noise may reach 90-95 decibels; when the valve is closed, the fluid flows back at the shut-off point, but the kinetic energy of the fluid will not disappear immediately. Two kinetic energies collide with each other to form a...

AI Technical Summary

Problems solved by technology

[0003] Disadvantages of the ball valve in the prior art in industrial production use: when the fluid flows through the process pipeline at high speed, a lot of noise is generated at the ball valve

The two kinetic energies collide with each other to form a water hammer phenomenon, which causes a lot of vibration and damages equipment and industrial pipelines

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