反渗透海水淡化电机泵冷却流道流场特性分析  

Analysis of the Flow Field Characteristics of the Cooling Channel of the Reverse Osmosis Seawater Desalination Motor Pump

作　　者：孙亚楠 高殿荣[1] 张宗熠 赵建华[1] 梁瑛娜[1] SUN Yanan;GAO Dianrong;ZHANG Zongyi;ZHAO Jianhua;LIANG Yingna(College of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,Hebei,China)

机构地区：[1]燕山大学机械工程学院,河北秦皇岛066004

出　　处：《船舶工程》2021年第8期90-95,共6页Ship Engineering

基　　金：河北省高等学校科学技术研究项目(ZD2020120;QN2020130);国家自然科学基金(52075468;52005428);河北省自然科学基金项目(E2020203052;E2021203099)。

摘　　要：针对船舶或海上平台安装空间狭小的问题,基于集成化思想和柱塞泵的基本原理,提出一种集电机、柱塞泵、增压泵和能量回收装置于一体的反渗透海水淡化电机泵,其中自冷却流道作为原海水循环流道,用以带走电机定转子产生的热量,保证电机泵整体的热平衡,突显出电机泵的结构紧凑,节能高效、低噪音等优点。通过流场分析技术,获得冷却流道主要结构参数对其内部低压原海水流动速度及流动均匀性的影响规律。研究表明,自冷却流道腰形孔周向开度角和径向宽度的增加,会导致自冷却流道内低压原海水的流动速度有所下降,但同时会使得自冷却流道的通流面积有所增加,从而在保证电机泵壳体的散热效率不受影响的同时进一步提高自冷却流道内低压原海水流动的均匀性,进而提高电机泵壳体散热的均匀性。Aiming at the problem of small installation space on ships and offshore platforms,based on the integration concept and the basic principles of plunger pumps,a reverse osmosis desalination motor pump that integrates motor,plunger pump,booster pump and energy recovery device is proposed.The cooling channel in the motor pump is used as the original seawater circulation channel to take away the heat generated by the stator and rotor of the motor,ensure the overall thermal balance of the motor pump,and highlight the advantages of compact structure,energy saving,high efficiency,and low noise.The influence rules of the key structural parameters of the cooling channel on the flow velocity and flow uniformity of the internal low-pressure raw seawater is obtained by flow field analysis.Studies show that the increase in the circumferential opening angle and the radial width of the kidney slot in self-cooling channel causes the decrease of the flow velocity of low-pressure raw seawater in self-cooling channel,while causes the increase of the flow area of the self-cooling channel,ensuring that the heat dissipation efficiency of the motor pump shell is not affected while the flow uniformity of the low-pressure raw seawater in the self-cooling channel is further improved,and thus improve the uniformity of heat dissipation of the motor pump shell.

关 键 词：反渗透海水淡化电机泵 自冷却流道 周向开度角 径向宽度 流场分析 

分 类 号：U664.591[交通运输工程—船舶及航道工程] TB126[交通运输工程—船舶与海洋工程]