Experimental analysis of the effect of sealing surface pitting defects on valve sealing performance

Chunyin Deng; Jizu Nie; Liqun Luo; Bo Wang; Guoxing Chen; Shuhui Wu; Yiling Shi; Jingcan Shi; Wenju Gao; Shengyong Liu; Wenli Zhang

doi:10.1117/12.3007569

25 October 2023 Experimental analysis of the effect of sealing surface pitting defects on valve sealing performance

Chunyin Deng, Jizu Nie, Liqun Luo, Bo Wang, Guoxing Chen, Shuhui Wu, Yiling Shi, Jingcan Shi, Wenju Gao, Shengyong Liu, Wenli Zhang

Author Affiliations +

Proceedings Volume 12801, Ninth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2023); 128011V (2023) https://doi.org/10.1117/12.3007569
Event: Ninth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2023), 2023, Dalian, China

Abstract

A significant element impacting sealing performance is the existence of defects on the valve plate's sealing surface. On plates without defects, we run a static sealing test. On the five wedge gate valve plates with pit defects created on the sealing surface, we performed static sealing tests, sealing tests with switching, and thermal fatigue sealing tests. According to experimental findings, isolated pit defects, dense defects, and dispersed defects do not cause valve plate leakage to exceed JB/T8858 standards. There is no substantial correlation between media pressure, switching rates, and leakage rates. Wedge gate valve leakage rate dramatically increased during thermal fatigue conditions, and sealing performance and the number of valve switches under high pressure conditions are positively associated, with the higher the switching rate, the higher the leakage rate.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Chunyin Deng, Jizu Nie, Liqun Luo, Bo Wang, Guoxing Chen, Shuhui Wu, Yiling Shi, Jingcan Shi, Wenju Gao, Shengyong Liu, and Wenli Zhang "Experimental analysis of the effect of sealing surface pitting defects on valve sealing performance", Proc. SPIE 12801, Ninth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2023), 128011V (25 October 2023); https://doi.org/10.1117/12.3007569

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KEYWORDS

Switching

Clocks

Switches

Thermal deformation

Deformation

Electrodes

Cobalt

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