流体机械

2022, v.50;No.600(06) 1-5+70

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超高速部分流泵工作特性试验研究
Experimental study on working characteristics of ultra-high speed partial flow pump

郝小龙,张明根,王志峰,李振将,胡丽国
HAO Xiaolong,ZHANG Minggen,WANG Zhifeng,LI Zhenjiang,HU Liguo

摘要(Abstract):

为获得部分流泵在超高工作转速下的扬程系数、功耗损失与工作效率特性,设计了2种外径尺寸规格的部分流泵,在专用高压氦吹试验系统上进行了氦气驱动运转试验。针对每种尺寸的部分流泵均进行了2种氦气压力条件下连续多个输出流量的工作特性参数测试,试验最高转速达到了120 000 r/min以上。试验结果表明:外径22 mm的部分流泵在转速从85 200 r/min升高至125 000 r/min过程中扬程系数从0.87降至0.67,最高工作效率不超过0.38;外径27 mm的部分流泵在转速从102 000 r/min升高至138 000 r/min过程中扬程系数在0.50~0.61间缓慢变化,最高工作效率不超过0.21;且2种尺寸规格泵功耗损失都随转速升高急剧增加,工作效率明显下降,在超高转速情况下泵的功耗损失是十分突出的问题。试验结果对于后续设计超高速部分流泵具有重要的参考价值。
In order to obtain the head coefficient,power loss and working efficiency characteristics of the partial flow pump at ultra-high operating speed,two sizes of partial flow pumps with different outer diameters were designed,and helium driven operation tests were carried out on a special high-pressure helium blowing test system.For each size of partial flow pump,the working characteristic parameters of continuous multiple output flows under two kinds of helium pressure were tested,and the maximum speed was more than 120 000 r/min.The test results show that when the rotating speed of the partial flow pump with an outer diameter of 22 mm increases from 85 200 r/min to 125 000 r/min,the head coefficient decreases from 0.87 to 0.67,and the maximum working efficiency does not exceed 0.38;When the rotating speed of the partial flow pump with an outer diameter of27 mm increases from 102 000 r/min to 138 000 r/min,the head coefficient changes slowly between 0.50 and 0.61,and the maximum working efficiency does not exceed 0.21;The power loss of the two sizes of pumps increases sharply with the increase of speed,and the working efficiency decreases obviously.The power loss of the pump is a very prominent problem under the condition of ultra-high speed.The test results have important reference value for the follow-up design of ultra-high speed partial flow pump.

关键词(KeyWords): 超高速;部分流泵;工作特性;扬程系数;功耗损失;工作效率
ultra-high speed;partial flow pump;working characteristics;head coefficient;power loss;efficiency

Abstract:

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基金项目(Foundation): 国家自然科学基金重点项目(U1737202)

作者(Author): 郝小龙,张明根,王志峰,李振将,胡丽国
HAO Xiaolong,ZHANG Minggen,WANG Zhifeng,LI Zhenjiang,HU Liguo

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