船用法兰铸钢截止阀流通特性分析和结构优化  

Analysis of flow characteristics and structure optimization of marine flange cast steel globe valve

作　　者：金维增[1] 张力[2] 张希恒[3] JIN Wei-zeng;ZHANG Li;ZHANG Xi-heng(Department of Mechanical and Electronic Engineering,Fushun Vocational Technical College,Fushun 113122,China;Shenyang Sansan Brand Valve Manufacturing Co.Ltd.,Shenyang 110179,China;School of Petrochemical Engineering,Lanzhou Univ.of Tech.,Lanzhou 730050,China)

机构地区：[1]抚顺职业技术学院机械与电子工程系,辽宁抚顺113122 [2]沈阳三三牌阀门制造有限责任公司,辽宁沈阳110179 [3]兰州理工大学石油化工学院,甘肃兰州730050

出　　处：《兰州理工大学学报》2023年第4期61-67,共7页Journal of Lanzhou University of Technology

基　　金：辽宁省教育厅项目(FZS20202)。

摘　　要：以DN65船用法兰铸钢波纹管截止阀为例,应用Flow-Simulation软件对其在全开状态下进行流阻系数有限元分析,模拟流场特性,计算流阻系数和流量系数,并依据GB/T30832对其进行实验验证,二者结果相吻合,表明数值模拟计算和方法正确.根据流场云图发现,阀体是影响阀门流阻系数和流量系数的关键因素.分析阀体流道结构对介质流动影响的同时,在阀体结构长度不变的情况下优化阀体流道结构,降低两端压力损失,进而大幅度地降低船用法兰铸钢波纹管截止阀流阻系数,提高流通能力,并通过实验进一步验证,这对阀门的优化设计尤其对直通截止阀具有重要意义.Taking DN65 marine flange cast steel bellows globe valve as an example,the finite element analysis of the flow resistance coefficient in the fully open state was carried out using Flow-Simulation software,and the flow resistance coefficient and flow coefficient were then calculated,followed by the experimental verification according to the GB/T30832 standard.The results show that the two results are consistent,demonstrating the accuracy of the numerical simulation and the method.According to the flow chart,it is found that the body of the valve is the key factor affecting the flow resistance coefficient and flow coefficient.Then,the effect of the body flow structure on the medium flow was analyzed.Meanwhile,remaining the length of the valve body structure was unchanged,the structure of the valve port was optimized,and the pressure loss on both ends was reduced,which in turn greatly reduce the cut-off valve flow resistance coefficient of the marine flange cast steel corrugated pipe,and improve its flow capacity.Finally,further verification was performed by the experimental method,which is of great significance to the optimization design of the valve,especially for straight-through globe valves.

关 键 词：截止阀 流通特性 流阻系数 流量系数 优化设计 数值模拟 

分 类 号：TH134[机械工程—机械制造及自动化]