流体机械2023，Vol.51Issue(12)：56-63,8.DOI:10.3969/j.issn.1005-0329.2023.12.009
大口径异构蝶阀流动特性分析及其流量系数研究
Flow characteristics analysis and flow coefficient study of large-diameter butterfly valves with different reinforced structures
摘要
Abstract
In order to investigate the influence of the unique reinforced structures of large-diameter butterfly valve disc on the internal flow characteristics,CFD simulation models of the large-diameter butterfly valves with the disc reinforced and block reinforced structures were established and the flow characteristics of the valves under various working conditions were analyzed.By comparing the simulation results with the test data,the rationality of the simulation models was verified.The results show that the two kinds of large-diameter butterfly valves under different openings and pressure ratios have significant nonlinear flow characteristics.Compared with the block reinforced butterfly valve,the plate reinforced butterfly valve has smaller vortexes,which leads to lower energy loss and higher flow coefficient.According to the research results,the relationship between the flow coefficient of the two types of the large-diameter butterfly valves with different structures and the pipeline Reynolds number shows a linear relationship,and the slope of this linear relationship is reversely proportional to the flow area.Based on this,the flow coefficient calculation formula of large-diameter butterfly valves based on pipeline Reynolds number was presented.The deviation between the flow coefficient calculation formula and the CFD simulation results is less than 7%and the flow characteristics of the two large-diameter butterfly valves can be uniformly characterized.关键词
大口径蝶阀/阀板加强结构/计算流体动力学/流量系数/雷诺数Key words
large-diameter butterfly valve/valve plate reinforced structure/CFD/flow coefficient/Reynolds number分类
机械制造引用本文复制引用
张晨曦,岳修贤,王信,但志宏,周强,白长青..大口径异构蝶阀流动特性分析及其流量系数研究[J].流体机械,2023,51(12):56-63,8.基金项目
国家自然科学基金项目(12072247) （12072247）
中国航发四川燃气涡轮研究院稳定支持项目(GJCZ-0013-19) （GJCZ-0013-19）
