电厂阀门泄漏的计算流体力学仿真研究  

Computational fluid dynamic simulation on valve leakage in power plants

作　　者：张冰[1] 张力[1] 陈志强[1] 刘光弟 赵红霞[2] ZHANG Bing;ZHANG Li;CHEN Zhi-qiang;LIU Guang-di;ZHAO Hong-xia(Shandong Electric Power Engineering Consulting Institute,Jinan 250100,China;School of Energy and Power Engineering,Shandong University,Jinan 250061,China)

机构地区：[1]山东电力工程咨询院有限公司,山东济南250100 [2]山东大学能源与动力工程学院,山东济南250061

出　　处：《山东科学》2022年第5期61-68,共8页Shandong Science

基　　金：国家自然科学基金(51776110)。

摘　　要：目前对电厂疏水管道阀门泄漏多采用基于传热原理的内漏自动检测计算方法,但是已有研究尚未对阀门泄漏时管道内流体的流动和传热进行分析,且对温度测点如何布置以及温度测量的精度要求也缺乏研究。针对以上问题,采用计算流体力学仿真的方法,研究了阀门泄漏时管道内传热和流动情况,分析了不同的管道直径和保温材料对所测温差和泄漏量的影响。研究结果为实时监测阀门附近流量的动态变化,进行工程现场诊断疏水阀门的泄漏故障提供了模型方法和参考。Currently,the leakage of drain pipeline values in power plants is detected automatically using the principle of heat transfer.However,existing studies have not yet analyzed the flow and heat transfer of the fluid in a pipeline during valve leakage.Furthermore,research on the arrangement of temperature measurement points and the accuracy requirements of temperature measurements is lacking.To address these shortcomings,this study uses a computational fluid dynamic simulation to investigate heat transfer and flow in pipelines when valve leakage occurs.In addition,the influence of different pipeline diameters and insulation materials on differences in the measured temperatures and the amount of leakage is analyzed.The findings of this study provide a reference for the real-time monitoring of dynamic changes in the flow near the valve and the diagnosis of leakage faults of drain valves on engineering sites.

关 键 词：疏水 阀门 计算流体力学 Fluent软件 

分 类 号：TK2[动力工程及工程热物理—动力机械及工程]