Abstract

Noises are common during operation, so the noise analysis and noise removal is necessary. High level vibration and noise may lead to the control valve fully open. After analyzing the causes of vibration and noise, the noise estimation formula put forward by Masonneilan company is used to estimate noise, and two measures of pipeline modification and valve internal constitution reform are proposed. In the valve internal structure reform design, the reform is mainly focused on designing balance spool, designing and installing sleeves and limiting spool motion. The pressure experiment results show that the performance of control valve is better.

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