斯特林驱动反渗透海水淡化增压泵设计研究  

Research on Stirling Powered Booster Pump for Reverse Osmosis Desalination

作　　者：耿冬寒[1] 金龙 李秀兵 Geng Donghan;Jin Long;Li Xiubing(School of Mechanical Engineering,Tianjin Polytechnic University,Tianjin 300380,China)

机构地区：[1]天津工业大学机械工程学院,天津300380

出　　处：《机械科学与技术》2020年第12期1844-1851,共8页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金项目(51705361);天津市技术创新引导专项优秀科技特派员项目(17JCTPJC47700);天津市教委科研计划项目(2017KJ080)资助。

摘　　要：提出一种用于小型反渗透海水淡化新型增压装置,将β型自由活塞斯特林发动机与往复式活塞泵耦合成为自由活塞斯特林发动机驱动式增压泵。确定初始设计参数,建立结构原理图,利用实用等温模型建模,分析斯特林发动机内部工作参数;在确定斯特林发动机参数后利用伯努利方程和一维不稳定流动方程对往复泵进行建模,得出泵吸排水口压力以及泵腔内压力变化;研究了斯特林发动机热源温度对输出功的影响,排出管口压力影响因素;利用MATLAB软件对所建立模型求解计算。结果表明,本设备理论上满足设计初始工况要求并可正常运行。This paper proposes a new supercharger for small reverse osmosis desalination,coupling a free piston Stirling engine with a reciprocating piston pump into a free piston Stirling engine driven booster pump.First,determine the initial design parameters and establish a structural schematic.Then,using the practical isothermal model modeling,the internal working parameters of the Stirling engine are analyzed.After determining the Stirling engine parameters,the reciprocating pump is modeled using the Bernoulli equation and the one-dimensional unstable flow equation,and the pumping and draining pressure and the pressure change in the pump chamber are obtained.At the same time,the influence of the temperature of the Stirling engine heat source on the output work and the influence factors of the discharge port pressure are studied.Then MATLAB software is used to solve the calculation of the established model.Finally,the output power and efficiency of the whole machine are calculated and compared with the initial set value.It is found that the device theoretically meets the initial working conditions of the design and can operate normally.

关 键 词：自由活塞斯特林发动机 往复式活塞泵 增压泵 实用等温模型 伯努利方程 

分 类 号：TH321[机械工程—机械制造及自动化]