哈尔滨工程大学学报2012，Vol.33Issue(11)：1405-1409,5.DOI:10.3969/j.issn.1006-7043.201111073
叶片数对离心泵空化诱导振动噪声的影响
Effects of the blade number on cavitation-induced vibration and noise of centrifugal pumps
摘要
Abstract
In order to research the effects of the blade number on flow-induced vibration and noise of centrifugal pumps, a single grade end suction centrifugal pump with 5 blades is chosen as the research object. The number of blades varied from 4,6, and 7 with the casing parameter and other geometric parameters of the impeller keeping constant. Based on the data-acquisition system of virtual instrument and pump product testing systems, the vibration , noise and outlet pressure pulsation signal of a model pump with the different blade number under distinct net positive suction heads (NPSHs) are measured and analyzed on the centrifugal pump closed empirical rig. Test results show that the influence of cavitation-induced vibration on the volute is the largest; through a comprehensive comparison of vibration strength at each test point, it derives that the vibration of the pump with 4 blades is the sharpest, and the pump with 5 blades is the minimum relatively. Under different cavitation conditions, the blade frequency peak of noise signal kept constant, but the shaft frequency peak varied intricately, with the increasing of blade numbers. When cavitation seriously occur, the shaft frequency peak of the model pump with 6 blades is the maximum. With the intensification of cavitation, the shaft frequency peak of each model pump with a different blade number is declining.关键词
离心泵/振动和噪声/叶片数/空化诱导Key words
centrifugal pumps/ vibration and noise/ blade number/ cavitation-induced分类
机械制造引用本文复制引用
王勇,刘厚林,袁寿其,王健,刘东喜..叶片数对离心泵空化诱导振动噪声的影响[J].哈尔滨工程大学学报,2012,33(11):1405-1409,5.基金项目
国家杰出青年基金资助项目(50825902) （50825902）
国家自然科学基金资助项目(51239005,51079062) （51239005,51079062）
国家科技支撑计划资助项目(2011BAF14B03) （2011BAF14B03）
江苏高校优势学科建设工程资助项目(PAPD) （PAPD）
江苏大学高级人才基金资助项目(12JDG044). （12JDG044）
