工业冷却水系统自动化节能改造设计  

Automated energy-saving reconstruction design of industrial cooling water system

作　　者：赵金鑫 ZHAO Jinxin(Hangzhou Sino-American Huadong Pharmaceutical Jiangdong Co.,Ltd.,Zhejiang Hangzhou 310000,China)

机构地区：[1]杭州中美华东制药江东有限公司,浙江杭州310000

出　　处：《工业仪表与自动化装置》2024年第6期93-96,共4页Industrial Instrumentation & Automation

摘　　要：某企业的冷却水系统通过后台人为操控,经常出现能耗浪费。该文在分析冷却塔的冷却极限和水泵的节能措施后,将冷却塔负荷率控制在50%并参考湿球温度启停,水泵采取同步变频,并把旁通阀执行机构更换成调节型来避免冬季低温时水泵大流量现象的发生。恒压供水和恒流控制的PID调校参数通过Lambda算法设定。在不影响系统的前提下完成,该改造可实现0操作运行,经连续7个月的稳定运行,电耗同比降低43716 kWh。The cooling water system of a certain enterprise is often subject to energy waste due to manual control in the background.By analyzing the cooling limits of cooling towers and energy-saving measures for water pumps,the load rate of the cooling tower is controlled at 50%,and the start and stop of the motor are judged in combination with the wet bulb temperature.the water pump adopts synchronous frequency,the bypass valve actuator is replaced with a regulating type to avoid the occurrence of high flow at low temperatures in winter.The PID tuning parameters of constant pressure water supply and constant flow control is set by Lambda algorithm.Under the premise of not affecting the system,this renovation can achieve zero operation,after 7 months of stable operation,power consumption was 43,716 kWh lower than the same period last year.

关 键 词：冷却水系统 工业自动化 节能改造 PID 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置]