The application research on the qualification rate of the stem washing temperature by response surface methodology optimization
ZHANG Chang-ji
LI Gang
PU Hui-yan
YANG Zhong
YUAN Dan-yu
HOU Xuan
Abstract：Through the single factor test,the response surface methodology and the absolute difference anal-ysis method,the effect of the factors such as mounting position of the liquid level meter,the high and low level detection position of the liquid level meter,the compensation steam valve opening and closing point were investigated based on the comprehensive evaluation which were guided by the qualification rate of the stem washing temperature.The results showed that:When the mounting position of the liquid level meter was 34 cm,the low level detection position was 28 cm,the high level detection position was 38 cm,the maximal prediction value of the qualification rate of the stem washing temperature was 94.996%.When the temperature was less than 47.5 ℃,the opening of the compensation steam valve was 100%,which was gradually reduced with the increase of the water temperature;when the water temperature was more than 52.5 ℃,the opening of the compensation steam valve was closed.Through the program optimization of the liquid level detection,the compensation steam valve opening and closing point,the PID control program of the stem washing machine of YSG-8AF realized the automatic control of adding water and increasing tem-perature,the qualification rate of the stem washing temperature was increased from 79.85% to 99.92%.
Keywords：the stem washing temperatureopening compensation steam valveresponse surface methodolo-gythe absolute difference analysis method
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 57-63 )