矿用高速抢险泵推力盘作辅助叶轮的试验  

Experiment of thrust disk as auxiliary impeller in a high-speed rescue pump

作　　者：柏宇星 冯子政 吴金国 孔繁余[3] 陈茹雯 BAI Yuxing;FENG Zizheng;WU Jinguo;KONG Fanyu;CHEN Ruwen(School of Automotive&Rail Transit,Nanjing Institute of Technology,Nanjing,Jiangsu 211167,China;Shandong Xingyuan Mine Equipment Group Co.Ltd.,Jining,Shandong 272300,China;National Research Center of Pumps,Jiangsu University,Zhenjiang,Jiangsu 212013,China;The Eleventh Research Institute of the Sixth Academy of CASC,Xi′an,Shaanxi 710000,China)

机构地区：[1]南京工程学院汽车与轨道交通学院,江苏南京211167 [2]山东星源矿山设备集团有限公司,山东济宁272300 [3]江苏大学国家水泵及系统工程技术研究中心,江苏镇江212013 [4]中国航天科技集团有限公司第6研究院第11研究所,陕西西安710000

出　　处：《排灌机械工程学报》2021年第8期784-789,共6页Journal of Drainage and Irrigation Machinery Engineering

基　　金：国家自然科学基金资助项目(51806082);江苏省自然科学基金资助项目(BK20191009);江苏省高等学校自然科学研究项目(20KJB470016);南京工程学院校级科研基金资助项目(YKJ201933)。

摘　　要：为了获得矿用高速抢险泵中推力盘作辅助叶轮的水力特性,搭建了多功能推力盘试验台,通过试验方法研究了推力盘作辅助叶轮不同转速、温度、出口情况下的水力性能和抗汽蚀性能.试验结果表明:区别于传统离心泵,转速变化定律对推力盘作辅助叶轮产生的扬程不适用,转速越高,扬程系数取值越小.推力盘作辅助叶轮的流量范围与自身结构特性相关,与转速没有明显关系.6种转速下,随着流量增大,扬程不断降低,最大和最小扬程分别为19.64 m和2.62 m;机组效率先增大再减小,最高机组效率为6.5%;功率曲线则缓慢降低.随着转速提高,推力盘作辅助叶轮流量覆盖范围有轻微增大;相同流量点下,扬程和功率数值都有提高.抗汽蚀性能方面,不同转速下,温度对推力盘作辅助叶轮汽蚀性能影响不同;不同流量下,小流量工况下推力盘作辅助叶轮抗汽蚀性能优于大流量工况.In order to obtain the hydraulic characteristics of thrust disk as auxiliary impeller in the mine high-speed rescue pump,a multi-function thrust disk experimental platform was built.The hydraulic and anti-cavitation performance of the thrust disk as auxiliary impeller at different speeds and temperatures were studied through the experimental method.The results show that different from the traditional centrifugal pump,the law of speed variation is not applicable to the head generated by the thrust disk as auxiliary impeller.The higher the speed is,the smaller the head coefficient is.The flow range of the thrust disk is related to its own structural characteristics.Under six different speeds,the head decreases as the flow velocity increases,and the maximum and minimum heads are 19.64 m and 2.62 m,respectively;the efficiency increases first and then decreases,the maximum unit efficiency is 6.5%;the power decreases slowly.With the increase of rotating speed,the flow range of the thrust disk as auxiliary impeller increases slightly,and the head and power values increase at the same flow point.In terms of anti-cavitation performance,the influence of temperature on the cavitation perfor-mance is different at different speeds;while the anti-cavitation performance of the thrust disk as auxi-liary impeller under small flow condition is better than that under large flow condition.

关 键 词：高速抢险泵 推力盘作辅助叶轮 水力性能 汽蚀 

分 类 号：TD442[矿业工程—矿山机电]