论高水头水电站低噪声减压技术的研究与应用  

Research and application of large vacuum ratio and low noise decompression technology in high-head hydropower station

作　　者：万双民 周刚 王天文 康强 宋挚中 WAN Shuang-min;ZHOU Gang;WANG Tian-wen;KANG Qiang;SONG Zhi-zhong(Tianshengqiao secondary hydropower Co.,Ltd.Xingyi 562400,China;Western Maintenance and Test Branch of China Southern Power Grid Peak and Frequency Modulation Power Generation Co.,Ltd.Xingyi 562400,China;Xiangtan Zhongji Power Station Auxiliaries Manufacturing Co.,Ltd.Xiangtan 441110,China)

机构地区：[1]天生桥二级水力发电有限公司,贵州兴义562400 [2]南方电网调峰调频发电有限公司西部检修试验分公司,贵州兴义562400 [3]湘潭中基电站辅机制造有限公司,湖南湘潭411100

出　　处：《水电站机电技术》2021年第1期5-9,127,共6页Mechanical & Electrical Technique of Hydropower Station

摘　　要：ZJY46H型组合式减压阀是专为复杂工况下运行的供水系统设计的减压设备。减压阀是通过改变节流锥开度来调节压力和流量,以减小过流面积达到减压目的。当进口压力或流量发生变化时,减压阀靠介质本身的能量进行自动调节,从而保持出口压力为原设定好的低压值。但ZJY46H型组合式减压阀运行时A计权分贝值一般较高,通过对在运ZJY46H型组合式减压阀的调研、理论分析,使用ANSYS-CFD数值模拟技术,研发大减压比低噪声活塞式减压技术。ZJY46H combined pressure reducing valve is a pressure reducing equipment specially designed for water supply system running under complex working conditions.The pressure reducing valve adjusts the pressure and flow by changing the opening of the throttle cone in order to reduce the overcurrent area to achieve the purpose of decompression.When the inlet pressure or flow changes,the pressure relief valve automatically adjusts depending on the energy of the medium itself,so as to keep the outlet pressure at the original set low pressure value.However,when ZJY46H combined pressure reducing valve is working,the A weighted decibel value is generally high.Based on the investigation and theoretical analysis of ZJY46H combined pressure reducing valve in operation,the piston pressure reducing technology with large vacuum ratio and low noise is developed by using ANSYS-CFD numerical simulation technology.

关 键 词：低噪声减压技术 模拟计算 节流锥 

分 类 号：TK730[交通运输工程—轮机工程]