大型泵站主电动机滑动轴承水冷却系统比较  

Comparison of water-cooling systems for sliding bearings of main motor in large pumping stations

作　　者：仇宝云 方涛 赵文军[2] 严天序 QIU Baoyun;FANG Tao;ZHAO Wenjun;YAN Tianxu(College of Electrical,Energy and Power Engineering,Yangzhou University,Yangzhou,Jiangsu 225127,China;Luoyun Hydraulic Project Management Division of Jiangsu Province,Suqian,Jiangsu 223800,China;National Research Center of Pumps,Jiangsu University,Zhenjiang,Jiangsu 212013,China)

机构地区：[1]扬州大学电气与能源动力工程学院,江苏扬州225127 [2]江苏省骆运水利工程管理处,江苏宿迁223800 [3]江苏大学国家水泵及系统工程技术研究中心,江苏镇江212013

出　　处：《排灌机械工程学报》2023年第8期757-763,786,共8页Journal of Drainage and Irrigation Machinery Engineering

基　　金：国家自然科学基金资助项目(52179091,51379182);江苏省水利科技项目(2019017,2019019)。

摘　　要：为比较大型泵站主电动机滑动轴承不同水冷却系统优缺点,对滑动推力轴承和导轴承发热量和传热进行计算,根据轴承温度控制条件,求得最小需要冷却水流量与进水温度的关系.介绍了传统供排水、盘管、板式热交换器和冷水机组4种水冷却系统,计算该4种水冷却系统运行能耗,并进行综合比较分析.研究结果表明:传统供排水冷却系统能耗大,泵吸水管口易堵塞,油冷却器内壁易结垢;与传统供排水冷却系统相比,盘管式水冷却系统节能22.9%,无堵塞、结垢问题;板式换热器冷却系统节能45.5%,节能率最高,但仍存在堵塞、结垢问题;冷水机组冷却系统节能39.6%,节能率次之,但具有节能、不结垢、无进水口堵塞问题和运行维护方便等综合优势.In order to compare the advantages and disadvantages of existing different sliding bearing water-cooling systems of main motors in large pump stations,the heat generated and heat transfer per-formances of the sliding thrust bearing and guide bearing in the motor oil cylinder were calculated,and the relation between the minimum required cooling water flow and inlet water temperature under the bearing temperature control conditions was obtained.Four kinds of water-cooling systerms were intro-duced:the traditional water supply and drainage system,the coil system,the plate heat exchanger sye-tem and the chiller system.The operation energy consumptions of the four kinds of watercooling syetems were calculated and analyzed,and a comprehensive comparison analysis was also made.The re sults show that the traditional water supply and drainage cooling system has high energy consumption,the pump suction inlet pipe is easy to block,and the inner wall of oil coolers is easy to scale.Compared with the traditional water supply and drainage cooling system,the coil water cooling system sawes 22.9%energy and has no problems of blockage and scaling.The plate heat exchanger cooling system saves energy by 45.5%with the highest energy-saving rate,but there are still problems of blockage and scaling.The chiller cooling system takes the second place with an energy-saving rate of 39.6%,however,it has the comprehensive advantages of energy saving,no scaling,no water inlet blocking and convenient operation and maintenance.

关 键 词：水冷却系统 大型泵站 电动机滑动轴承 能耗 可靠性 综合比较 

分 类 号：S277.9[农业科学—农业水土工程] TV61[农业科学—农业工程]