Noise reduction type valve body for reducing noise of main steam drain valve

Abstract

The invention provides a noise reduction type valve body for reducing noise of a main steam drain valve. The noise reduction type valve body comprises a valve body, wherein a drain device is arranged in the valve body, a noise reduction device is sleeved outside the valve body, a water inlet pipe is fixed at one end of the valve body, an air outlet pipe is fixed at the other end of the valve body, a water outlet pipe is fixed on the lower surface of the valve body, a buffering device is fixed to the end, away from the valve body, of the water inlet pipe, the buffering device is connected with the drain device through a gas conveying device, the drain device comprises a guide rod fixed in the valve body and a corrugated box arranged on the outer surface of the guide rod in a sleeving mode, the corrugated box is sleeved with a filter screen cylinder, the noise reduction device comprises a noise reduction shell which is arranged outside the valve body in a sleeving mode, an inner cavity of the noise reduction shell is matched with the valve body, and a buffer rubber layer is arranged between the surface of the inner wall of the noise reduction shell and the outer surface of the valve body. Energy absorption and noise reduction can be simultaneously carried out from the exterior and the interior of the valve body, so that the service life of the steam drain valve is prolonged.

Description

technical field [0001] The invention mainly relates to the technical field of steam water delivery valves, in particular to a noise reduction valve body for reducing the noise of a main steam trap valve. Background technique [0002] The main steam drain electric door is an important pressure relief and pressure regulating device when the unit starts and stops. Whether its working quality is reliable or not directly affects the safe operation and economical efficiency of the unit. [0003] According to a large-displacement double-balanced lever float type steam trap provided by the patent document with the application number CN201621167664.8, it can be known that the water transfer valve includes a valve body with an inner cavity, and the valve body has a water inlet channel and a water outlet channel. , a valve seat is arranged in the inner cavity of the valve body, and the valve seat is provided with a water outlet space. Hole and lower water inlet, an upper valve core an...

AI Technical Summary

Problems solved by technology

The resulting cavitation phenomenon will quickly corrode the valve core and cause damage. At the same time, it will also cause congestion on the shrinking surface of the liquid, restricting the flow of liquid through the valve and reducing the normal flow of the valve.

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