Author(s): Xin Wang, Ya-An Hu, Xiu-Jun Yan, Wen-Xun Qian, Zi-Yang Li, Cheng Chen
Linked Author(s): Xin Wang
Keywords: Industrial valve, high head, cavitation, vibration, aeration
Abstract: In view of cavitation induced vibration problem of the large high-head industrial valves used in one hydraulic ship lift, prototype observation on the cavitation and vibration characteristics of the valve and pressure pipes was carried out. In order to find vibration reasons and study on damping measures, Atmospheric and decompression model tests have been conducted, and for the different working conditions of the water filling valve and the emptying valve, different measures were put forward. Combined measures of sudden enlarged body behind the valve and aeration before the valve were adopted for the water filling valve, while the aeration measure was also taken before the water emptying valve. After reconstruction of the anti-cavitation measures of the project, prototype observation was carried out again. It is shown that the valve cavitation and vibration were properly resolved by the engineering measures. Valves can run smoothly at large opening and the cavitation phenomenon disappears. Vibration responses of the valves and pressure pipes were reduced by 80%~90%
Year: 2017