层流冷却装置冷却能力的确定  

Determination of Cooling Capacity of Laminar Flow Cooling Unit

作　　者：张芳芳 李丙亮[1] ZHANG Fangfang;LI Bingliang(Shandong Vocational College of Industry,Zibo 256414,China)

机构地区：[1]山东工业职业学院,山东淄博256414

出　　处：《山东冶金》2018年第4期37-39,共3页Shandong Metallurgy

摘　　要：以某试验轧机的控制冷却设备为研究对象,通过控制阀门的开口度绘制开口度-流量曲线,通过采取增加反馈控制、保证水箱的水位稳定和气源稳定、集管单向打开等措施,提高阀门开口度稳定性。分析认为,在集管开口度30%~80%范围内,开口度-流量曲线成线性变化,冷却装置的最大水流密度在1 200 L/(m^2·min)以上,可以满足不同冷却速度的要求。Taking the controlled cooling device of an experimental mill as the research object,the open-flow curve is drawn by controlling the opening degree of the valve.At the same time,the stability of valve opening degree can be improved by adding feedback control,ensuring the stability of water level of tank and the air supply,and one-way opening of the manifolds.The analysis showed that when the opening degree of the manifolds is within the range of 30%-80%,the open-flow curve changes linearly.The maximum flow density of the cooling device is over 1 200 L/(m2·min),so the cooling device meets the requirements of different cooling speeds.

关 键 词：层流冷却 冷却能力 流量标定 开口度-流量曲线 最大水流密度 

分 类 号：TH814[机械工程—仪器科学与技术]