双吸离心泵吸水室和压水室压力脉动特性试验研究OA北大核心CSCDCSTPCD
Experimental investigation on pressure fluctuations in suction chamber and volute of a double-suction centrifugal pump
双吸离心泵压力脉动是影响水泵机组运行稳定性的关键因素之一。采用试验的方法,分别在吸水室和压水室的壁面布置压力脉动传感器,采集各个测试流量下的压力脉动信号,进行混频幅值和频谱分析。结果表明,低于轴频的低频脉动和轴频脉动在吸水室区域占主导地位。在额定流量和大流量工况下,低频脉动频率主要为1/3倍的轴频。在小流量工况下,该低频脉动影响范围显著扩大,幅值明显增大。叶频脉动在隔舌区域非常强烈,是压水室区域的主导脉动成分,沿压水室圆周方向传播并耗散脉动能量。…查看全部>>
Pressure fluctuations in double-suction centrifugal pumps caused by internal flow are the primary sources of operation instability. By means of pressure transducers installed in suction chamber and volute wall, fluctuating pressure signals were obtained and recorded at various operation conditions. The signals in time and frequency domains of the signals were analyzed by using the fast Fourier Transform Method. The results show that rotating frequency and so…查看全部>>
姚志峰;王福军;肖若富;何成连
中国农业大学水利与土木工程学院,北京100083中国农业大学水利与土木工程学院,北京100083中国农业大学水利与土木工程学院,北京100083中水北方勘测设计研究有限责任公司,天津300222
机械制造
双吸离心泵吸水室压水室压力脉动频谱分析
double-suction centrifugal pumpsuction chambervolutepressure fluctuationfrequency spectrum analysis
《水利学报》 2012 (4)
流固耦合界面模型及其在水泵非稳定特性分析中的应用研究
473-479,7
国家自然科学基金项目（50779070）北京市自然科学基金重点项目（3071002）中央高校基本科研业务费专项资金项目（2009-2-12）
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