基于防火需求的冷却塔集水盘电加热电气控制设计*

王 雷（华东建筑设计研究院有限公司，上海市 200011）

虞利强（上海市虹口区消防救援支队，上海市 200082）

杨 琦（华东建筑设计研究院有限公司，上海市 200011）

郭长发（上海市虹口区消防救援支队，上海市 200082）

沈冬冬 金大算（华东建筑设计研究院有限公司，上海市 200011）

Electrical Control Design for Electric Heating of Water Collecting Tray in Cooling

Tower Based on Fire Protection Requirements*

WANG Lei(East China Architectural Design & Research Institute Co.,Ltd.,Shanghai 200011，China)

YU Liqiang(Shanghai Hongkou District Fire Rescue Detachment,Shanghai 200082，China)

YANG Qi(East China Architectural Design & Research Institute Co.,Ltd.,Shanghai 200011，China)

GUO Changfa(Shanghai Hongkou District Fire Rescue Detachment,Shanghai 200082，China)

SHEN Dongdong JIN Dasuan(East China Architectural Design & Research Institute

Co.,Ltd.,Shanghai 200011，China)

Abstract： In view of the fire caused by the electric heating device of water collection tray in building cooling tower,the problems existing in the electrical control design and the fire prevention requirements of the electric heating device in cooling tower are analyzed. Based on the fire prevention requirements,the main power supply circuit and control principle of the electric heater of the water collecting tray in cooling tower are designed,and the control principle of the thermostat is refined,and the technical measures are put forward in essence for the fire prevention of the electric heating device of the water collecting tray in cooling tower.

Key words：electrical control;design of power distribution;cooling tower;fire prevention;water collecting tray;electric heating;thermostat;control principle

摘　要：针对建筑用冷却塔集水盘电加热装置引起的火灾，分析其电气控制设计存在的问题和冷却塔对电加热装置的防火需求。结合防火需求，设计冷却塔集水盘中电加热器的供电主回路和控制原理，并细化温控器的控制原理，为冷却塔集水盘电加热装置的防火从本质上提出解决技术措施。

关键词：电气控制；配电设计；冷却塔；防火；集水盘；电加热；温控器；控制原理

中图分类号：TU831                 　  文献标识码：A

doi：10.3969 / j. issn.1003 － 8493.2023.04.006