浮动叶轮轴向位移量对泵水力性能的影响  

Influence of axial displacement of floating impeller on hydraulic performance of pump

作　　者：刘在伦[1,2] 吴佼[1] 曾继来[1] 张森[1] 孙雨[1] 

机构地区：[1]兰州理工大学能源与动力工程学院,甘肃兰州730050 [2]兰州理工大学温州泵阀工程研究院,浙江温州325105

出　　处：《兰州理工大学学报》2015年第2期51-54,共4页Journal of Lanzhou University of Technology

基　　金：国家自然科学基金(51269010);浙江省自然科学基金(LY12E09002)

摘　　要：为了研究浮动叶轮轴向位移量对泵性能和叶轮轴向力的影响规律,将IS80-50-315型离心泵的叶轮向后泵腔方向轴向移动0、2、4、6、8mm,进行泵的性能和平衡腔内液体压力的测试.试验表明,在不同工况下,随着叶轮轴向位移的增大,泵的扬程、效率是降低的,轴功率是增大的;在设计工况下,泵的扬程和效率在轴向位移为4 mm较0mm分别降低了1.19%和1.84%,当轴向位移大于4mm时,随着叶轮轴向位移的再增大,泵的扬程、效率有所回升.试验结果验证了浮动叶轮轴向位移能调节平衡腔液体压力,改变泵轴向力特性.In order to research the influence of axial displacement of floating impeller on pump perform- ance and axial force, IS80-50-315 centrifugal pump is taken as the research object, the amount of the axial displacement of impeller is made 0,2,4,6 and 8 mm backward respectively, and then the performance of the pump and fluid pressure in balance chamber are tested. It is shown by the test that the pump head and efficiency will decrease with the impeller axial displacement in various operational conditions, but the shaft power will increase. Under design working condition, pump head and efficiency will reduce by 1.19 % and 1.84 % at axial displacement being 4 mm compared with that at 0 ram. When axial displacement is greater than 4 mm, the pump head and efficiency will re-increase to some extent with the axial displacement of the impeller. The test result verifies that the axial displacement of the floating impeller can regulate the pres- sure in the balancing chamber and change the characteristics of the axial force.

关 键 词：泵 浮动叶轮 轴向移动 性能 轴向力 

分 类 号：TH311[机械工程—机械制造及自动化]