水力机械空化实时检测技术研究  

Research on Online Monitoring Technology of Cavitation in Hydraulic Machinery

作　　者：赵越[1] 曹卫华 滕海波 李任飞[1] 郭一通[4] 赵英男[1] 刘智良[1] 苏文涛 杜清玭 孙永鑫[1,7] ZHAO Yue;CAO Weihua;TENG Haibo;LI Renfei;GUO Yitong;ZHAO Yingnan;LIU Zhiliang;SU Wentao;DU Qingpi;SUN Yongxin(Harbin Electric Machinery Company Limited,Harbin 150040,China;Beijing IWHR Corporation,Beijing 100048,China;The Eastern Route of South-to-North Water Diversion Smart Water Corporation,Beijing 100071,China;Harbin Institute of Technology,Harbin 150006,China;Liaoning Petrochemical University,Fushun 113005,China;China Three Gorges Construction Engineering Corporation,Chengdu 610095,China;Harbin Research Institute of Large Electrical Machinery Company Limited,Harbin 150040,China)

机构地区：[1]哈尔滨电机厂有限责任公司,哈尔滨150040 [2]北京中水科工程集团有限公司,北京100048 [3]南水北调东线智能水务(北京)有限公司,北京100071 [4]哈尔滨工业大学,哈尔滨150006 [5]辽宁石油化工大学,辽宁抚顺113005 [6]中国三峡建工(集团)有限公司,成都610095 [7]哈尔滨大电机研究所有限公司,哈尔滨150040

出　　处：《大电机技术》2024年第3期69-76,共8页Large Electric Machine and Hydraulic Turbine

基　　金：黑龙江省自然科学基金杰出青年项目(JQ2023E006);中国长江三峡集团有限公司科研项目资助(JGJD03021003)。

摘　　要：本文从空化现象的发生机理出发,开发出通过分析水力机械发生空化时辐射出的空化噪声时频特征的变化,判定水力机械空化发生及表征空化发生程度的实时检测技术。该技术已应用在包括贯流式、轴流式、混流式和水泵水轮机等水力机械型式的多个电站,具有安装便捷、安全可靠的特点,可以应用在水力机械优化运行和智慧机组建设等领域。Based on the occurrence mechanisation of cavitation,this paper develops an online monitoring technology to determine the occurrence of cavitation in hydraulic machinery and judge the severity of cavitation by analyzing the change of time-frequency characteristics of cavitation noise radiated by hydraulic machinery during cavitation.This technology has been applied in many power stations including bulb turbine,Kaplan turbine,Francis turbine and pump-turbine.It has the characteristics of convenient installation,safety and reliability,and can be applied in the fields of optimal operation of hydraulic machinery and smart unit construction.

关 键 词：水力机械 空化 实时检测 机组振动 空化噪声 

分 类 号：TK72[动力工程及工程热物理—流体机械及工程]