摘要
对调节阀的结构特性进行研究,推导出已知固有流量特性调节阀相对的缩流面积和涡流面积之比等于其相对流量系数。根据相似性原理,假设具有相同固有流量特性的不同规格调节阀其相对流通面积随相对开度的变化规律是相似的,并据此给出了一种柱塞式阀芯型线的解析设计方法。根据该方法所设计的阀芯型线的数值模拟流量特性与固有流量特性的偏差符合IEC 60534-2-4的规定,可见该设计方法减轻了调节阀阀芯型线设计过程中通过流量试验反复修正阀芯型线的工作量,具有一定的推广价值。
The structural characteristics of control valve with a inherent flow characteristics was analyzed,and it was deduced that relative proportion of contraction flow area to whirlpool flow area is equal to relative flow coefficient. A method to design the mold line of valve plug was given on the basis of similarity principle-different dimensional control valves with same inherent flow characteristics have similar structural characteristics. A mold line of valve plug was designed by the method,and the fluid numerical simulation verification was done,the results show that the deviation from inherent flow characteristics were in according with the rule of IEC 60534- 2- 4.
出处
《流体机械》
CSCD
北大核心
2016年第5期37-41,46,共6页
Fluid Machinery
基金
中石化科技项目(315014)
关键词
调节阀
固有流量特性
结构特性
阀芯型线
control valve
inherent flow characteristics
structural characteristics
plug contour line
