脉冲液体射流泵装置性能试验研究  

Experimental Study on Performance of Pulsed Liquid Jet Pump

作　　者：徐维晖[1] 高传昌[1] 秦海霞[1,2] 

机构地区：[1]华北水利水电学院,郑州450011 [2]河南省水利科学研究院,郑州450003

出　　处：《核动力工程》2010年第4期48-51,共4页Nuclear Power Engineering

基　　金：国家自然科学基金资助项目(70573043);国防科研项目(Z012005A001)

摘　　要：研究了脉冲液体射流泵装置性能随喷嘴出口断面与喉管断面的面积比、工作压力和脉冲参数的变化特点。研究表明:脉冲射流可显著提高射流泵装置的性能;面积比和脉冲参数是影响脉冲液体射流泵装置性能的决定因素,减小面积比或提高脉冲频率可显著提高射流泵装置的性能;脉冲液体射流泵装置的流量特性呈典型负线性特征,脉冲液体射流泵装置效率曲线呈抛物型,脉冲频率越高,射流泵装置最佳效率点向大流量比方向移动,将增大射流泵装置性能的高效区范围。Thedevice performanee characteristics of transformer type pulsed liquid pump device were experimentally studied. The effects of the area ratio, work pressure and pulse parameters on the performance of the pulsed liquid jet pump device were performed in the tests. The potency of pulsed jet on improving the performance of the liquid jet pump device was also studied through the comparison with invariable jet pump at the same conditions. The results show that the pulsed jet can signtticantly tmprove the performance of transformer type jet pump devices. Area ratio and pulse parameters are the critical factors to the performance of the pulsed liquid jet pump device. The jet pump device performances are significantly improved by reducing the area ratio or by increasing the pulsed frequency. The flux characteristics of the pulsed liquid jet pump device presents the typical negative linear, the potency of pulsed jet in improving the performance of jet pump device with small area ratio can be more significant. The efficiency curve of pulsed liquid jet pump is similar to the parabola. At higher pulsed frequency, the top efficiency point of the pulsed jet pump moves to the higher flow ratio. The high efficiency area of the pulsed jet pump also is widened with the increase of the pulsed frequency.

关 键 词：射流泵装置 脉冲 效率 试验研究 

分 类 号：TV136[水利工程—水力学及河流动力学]