双喷嘴射流泵基本特性方程及其性能研究

发布时间：2018-06-15 17:55

本文选题：双喷嘴 + 射流泵　；参考：《煤炭学报》2016年10期

【摘要】：以射流泵理论和能量守恒定律为基础,采用洛伦兹流体混合损失模型,推导出新型双喷嘴射流泵的基本特性方程。当流速比V=1时,射流泵的理想效率为100%;当0V1时,面积比R越大射流泵的理想效率越高。根据实验数据拟合出能量损失系数关系是:K_(td)K_cK_jK_s,得到了射流泵完整的特性方程和实际特性曲线,结果表明:随着面积比R的增大,压力比P增大,但射流泵的工作区间缩小,高效区的位置左移;射流泵最高效率随流量比M_1呈现先增大后减小的趋势,而压力比P则是一直减小,符合能量守恒规律;实验样机的最优面积比R_(opt)为0.30,最优流量比M_(opt)为1.04,新型射流泵的效率最大值为22.57%。
[Abstract]:Based on the theory of jet pump and the law of conservation of energy, the basic characteristic equation of a new type of dual nozzle jet pump is derived by using the Lorentz fluid mixing loss model. The ideal efficiency of the jet pump is 100 when the velocity ratio is 1, and the ideal efficiency of the jet pump is higher when the area is larger than R when the flow rate is 0 V 1. According to the experimental data, the relationship of energy loss coefficient is: 1 / K / T / K / K / K / KKS. The complete characteristic equation and actual characteristic curve of the jet pump are obtained. The results show that with the increase of the area ratio R, the pressure ratio P increases, but the working interval of the jet pump shrinks. The maximum efficiency of the jet pump increases first and then decreases with the flow rate, while the pressure ratio P decreases continuously, which conforms to the law of energy conservation. The optimum area ratio of the experimental prototype is 0.30, the optimum flow ratio is 1.04, and the maximum efficiency of the new jet pump is 22.57.
【作者单位】：山东科技大学机械电子工程学院;中国石油大学(华东)机电工程学院;中联煤层气有限责任公司;
【基金】：国家自然科学基金资助项目(51174224) 青岛市科技计划资助项目(15-9-1-32-jch) 山东科技大学人才引进科研启动基金资助项目(2015RCJJ025)
【分类号】：TD401

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