首页 | 本学科首页   官方微博 | 高级检索  
     

水压柱塞泵关键结构参数对泵内空化的影响
引用本文:高殿荣,索晓宇,蔡倩玲,毋少峰,梁英娜.水压柱塞泵关键结构参数对泵内空化的影响[J].中国机械工程,2018,29(4):434.
作者姓名:高殿荣  索晓宇  蔡倩玲  毋少峰  梁英娜
作者单位:1.燕山大学机械工程学院,秦皇岛,066004 2.燕山大学建筑工程与力学学院,秦皇岛,066004
基金项目:国家自然科学基金资助项目(51375421) National Natural Science Foundation of China (No. 51375421)
摘    要:针对水压柱塞泵由于空化引起的噪声、振动以及元件的腐蚀等问题,基于全空化模型与k-ε湍流模型,分析了柱塞腔在不同位置的气相体积分数的分布以及该分布产生的机理、卸荷槽处产生空化的机理,得到了不同斜盘倾角下柱塞腔和配流盘吸水口处气相体积分数随转角变化的特性曲线,以及一级卸荷槽深度与其气相体积分数和柱塞腔压力脉动率的关系。数值计算结果表明:空化主要发生在位于吸水区域的柱塞腔;与配流盘吸水口接触瞬时的柱塞腔的气相体积分数最高;减小斜盘倾角可以减小柱塞腔和配流盘吸水口的气相体积分数与持续时间;增大一级卸荷槽深度可以减小卸荷槽处空化程度,但会增大柱塞腔的压力尖峰和压力脉动率。

关 键 词:水压柱塞泵  空化  斜盘倾角  一级卸荷槽深度  

Influences of Key Structural Parameters of Hydraulic Piston Pump on Cavitation
GAO Dianrong,SUO Xiaoyu,CAI Qianling,WU Shaofeng,LIANG Yingna.Influences of Key Structural Parameters of Hydraulic Piston Pump on Cavitation[J].China Mechanical Engineering,2018,29(4):434.
Authors:GAO Dianrong  SUO Xiaoyu  CAI Qianling  WU Shaofeng  LIANG Yingna
Affiliation:1.School of Mechanical Engineering,Yanshan University, Qinhuangdao, Hebei,066004 2.School of Institute of Architectural Engineering and Mechanics, Yanshan University,Qinhuangdao, Hebei,066004
Abstract:In order to focus noises, vibrations and component corrosions caused by the cavitation in hydraulic plunger pump, a numerical simulation was conducted through full cavitation model and k-ε turbulence model to study the distribution of gas-phase volume fraction at various positions in plunger chamber and the generation mechanism of the distribution and the cavitation at relief grooves. The relation between depth of level 1- relief groove with its gas-phase volume fraction and impulse frequency in plunger pump. The results reveal that cavitations occur mainly at the intake areas, and the gas-phase volumes get to the largest fraction at the moment while water touching the inlet of port plate, and reducing dip angle of the sloping plate the gas phase volume fraction and its lasting period are decreased. Increasing the depth of level 1-relief groove wakens the cavitation, but it strengthens the peak pressure and pressure pulsation rate.
Keywords:hydraulic plunger pump  cavitation  sloping plate angle  primary unloading groove depth  
本文献已被 CNKI 等数据库收录!
点击此处可从《中国机械工程》浏览原始摘要信息
点击此处可从《中国机械工程》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号