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排灌机械工程学报
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排灌机械工程学报  0, Vol. Issue (): 9-    DOI:
泵理论与技术 最新目录 | 下期目录 | 过刊浏览 | 高级检索 Previous Articles  |  Next Articles  
脉冲液-气射流泵能量平衡的研究
张晋华1,高传昌1, 闫勇2,王小卉2
(1.华北水利水电学院,郑州,450011;2.上海勘测设计研究院重庆分院,重庆,400000)
Study on energy balance of pulsed liquid gas jet pump
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摘要 运用能量平衡分析方法,得到脉冲液-气射流泵内能量损失的压力比表达式,分析其传能及传质的机理和主要影响因素,研究了主要流动部件的能量损失变化对脉冲液-气射流泵性能的影响,并进行了相应的试验研究和数值研究。研究可知最优面积比的液-气射流泵应是在较大的流量比区间具有较好的压力比,通过5个面积比的试验得到m=4.34为最优面积比。而研究结果表明:主要流动部件的能量损失的理论分析与试验结果基本一致;计算了主要流动部件的能量损失压力比,分析其与面积比和流量比的关系;脉冲射流频率、射流泵的面积比、流量比和射流泵喉管长度是影响射流泵能量平衡和液-气射流泵能量特性的主要因素。通过各面积比下,脉冲与恒定液-气射流泵能量损失压力比、性能、效率的试验数据进行对比研究,验证了脉冲射流是提高液-气射流泵效率的有效途径。
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张晋华1
高传昌1
闫勇2
王小卉2
关键词水利机械   脉冲液-气   射流泵   能量平衡   脉冲射流   性能     
Abstract:  By the energy balance theorem,The energy loss pressure ratio’s expression formula of the main flowing unit of pulsed liquid-gas jet pump was deduced, the main factors which influenced the energy conversion were analyzed, The influence of energy losses in the flow passage on the pump’s performance was studied,and the experimental and numerical study were conducted.Research was showed that the optimal area ratio of liquid - gas jet pump should be a better pressure in the larger flow interval, the m = 4.34 is the optimal area ratio through the five area - ratio experiment. Results show that the theoretical calculations agree with the measurements. The energy loss ratios of flowing units were calculated, and analyzed the relationship with the area ratio and the flow ratio. Frequency pulse jet, the jet pump area ratio, the flow ratio and the jet pump piping length is the main factor to affect energy balance and liquid-gas jet pump energy characteristics of the jet pump. Through comparing the experimental data of the pulsed with the experimental data of the steady liquid-gas jet pump in different area ratio and that pulsed jet is an effective way to enhance the liquid-gas jet pump’s efficiency.
Key wordshydraulic machinery   pulsed liquid gas   jet pump   energy balance   pulsed jet   performance   
引用本文:   
张晋华1,高传昌1,闫勇2等. 脉冲液-气射流泵能量平衡的研究[J]. 排灌机械工程学报, 0, (): 9-.
ZHANG Jin-Hua-1,GAO Chuan-Chang-1,YAN Yong-2 et al. Study on energy balance of pulsed liquid gas jet pump[J]. Journal of Drainage and Irrigation Machinery Engin, 0, (): 9-.
 
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