Noise elimination V-type ball valve with combined hole plates

Abstract

Disclosed is a noise elimination V-type ball valve with combined hole plates. A disk type spring gland 4 compresses a valve seat supporting ring 6 through a disc type pre-loaded spring 5; a valve body 2 and the valve seat supporting ring 6 are sealed through an O-type seal ring 9; a valve rod 17 drives a valve element 7 to rotate through a spline 8; the valve element 7 makes contacts with the valve seat supporting ring 6 to form a sealing surface; a packing gland 12 and the valve body 2 are compressed together through a bolt and nut component 13; the packing gland 12 compresses a packing material 10 through a packing shaft sleeve 11; a supporting frame 15 and the valve body 2 are compressed together through bolt and nut components 14; the packing material 10 is isolated from the valve rod 17 through a packing spacer 16; a pressure reduction hole plate 19 and a pressure reduction hole plate 20 are welded into the valve element 7; a noise elimination hole plate 21 and the valve body 2 are fastened together through an inner hexagon screw18; a base gland 1 is fastened to the valve body 2 through bolt and nut components 23; and the bottom of the valve element 7 rotates around a valve element rotary shaft 22 when the valve element 7 works.

Description

technical field [0001] The invention relates to the technology of a sound-absorbing V-shaped ball valve, which is applied in technical fields such as chemical industry, aviation and aerospace. Background technique [0002] With the development of science and technology, there are more and more types of regulating valves. V-type regulating ball valve not only has a wide range of applications, but also has the characteristics of compact structure, large adjustable ratio and small flow resistance. However, for the occasion of high flow rate and high pressure drop, the pressure drop of the conventional V-shaped regulating ball valve is too large during use, which is likely to cause fluid excitation and high noise. Most domestic researchers have done some research on the sealing and packing structure of V-shaped ball valves, but they have not done in-depth discussions on the fluid excitation and high noise caused by high-velocity media. The structure provided by the patent CN 2...

AI Technical Summary

Problems solved by technology

However, for the occasions of high flow rate and high pressure drop, the pressure drop of the conventional V-shaped regulating ball valve is too large during use, which is likely to cause fluid excitation and high noise.

Most domestic researchers have done some research on the sealing and packing structure of V-type ball valves, but they have not done in-depth discussions on the fluid excitation and high noise caused

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