600 MW 超临界机组给水泵最小流量阀的改进
一. 前言
摘要:随着600 MW 超临界及1000 MW 超超临界机
组大规模建设,笼罩式和孔板式构造调节阀早已不能满足高压
差、高流速的要求。这时选择迷宫式调节阀对此问题提出了较
好的解决对策。文章重点阐述了迷宫式调节方的工作原理、构
造特征以及理论基础,同时经过和孔板式调节阀进行对比,体
现出了较强的调节功能。
关键词:调节阀 迷宫式芯包 气蚀 围堰 流量 节流减压
Abstract:with the construction of 600 MW supercritical and ultra supercritical
1000 MW unit, the shrouded and orifice plate structure control valve has been unable
to adapt to the conditions of high pressure and high flow rate. And the use of labyrinth
technology control valve gives a good solution. In this paper, the working principle, the