摘要
针对柱塞泵引起的压力脉动问题,运用脉动交换技术将脉动传递至喷雾蒸发制盐系统,实现双效节能。为了研究其脉动转换规律,运用数值模拟方法分析了在不同弹簧弹性系数、脉动相对振幅与频率下,进口平均脉动压力逐渐增大时脉动能交换器内部管路脉动压力与活塞做功的变化规律。结果表明:在高压、高脉动振幅及较高脉动频率条件下脉动能转换成机械能的效果较好。当弹簧弹性系数越小时,脉动能转换效果越好。当脉动平均压力增大时,管路脉动率随着压力的升高而降低,随着相对振幅及频率的增加而上升;脉动转换效果与平均压力、相对振幅及频率均呈正相关,活塞相对行程最大可达18.5%。
To address the pressure pulsation issue caused by the piston pump,the pulsation exchange technology is applied to transfer the pulsation to the spray evaporation salt production system to achieve energy saving.In order to study the pulsation conversion mechanism,numerical simulation is used to analyze the variation in the pulsation pressure and the amount of work done by the piston when the average inlet pulsation pressure gradually increases under different spring elasticity coefficient,pulsation relative amplitude and frequency.The results show that the pulsation energy is converted into mechanical energy under the conditions of high pressure,high pulsation amplitude and high pulsation frequency.Pulsation energy conversion is found to improve with decreasing spring elasticity coefficient.When the average pulsation pressure increases,the pulsation rate of the pipeline decreases with the increase of pressure,and increases with the increase of relative amplitude and frequency;the pulsation conversion effect is positively correlated with the average pressure,relative amplitude and frequency,and the maximum relative stroke of the piston can reach 18.5%.
作者
彭丽明
徐青
李正贵
凌长明
PENG Liming;XU Qing;LI Zhenggui;LING Changming(Shenzhen Institute of Guangdong Ocean University,Shenzhen Guangdong 518120,China;School of Mechanical and Power Engineering,Guangdong Ocean University,Zhanjiang Guangdong 524000,China;Key Laboratory of Fluid and Power Machinery of Ministry of Education,Xihua University,Chengdu 610039,China)
出处
《机械设计与研究》
CSCD
北大核心
2021年第4期170-175,共6页
Machine Design And Research
基金
深圳市科技计划项目(JCYJ20170818111558446)
大鹏新区产业发展专项资金项目(KY20180113)。
关键词
脉动能交换器
递增脉动
脉动转换
振幅
频率
数值模拟
pulsating energy exchangers
incremental pulsation
pulsation conversion
amplitude
frequency
numerical simulation
