Abstract: Abstract: How to set up automatic fire extinguishing system for non-heating tall warehouse buildings in cold area is a difficult problem in practical work. At present, the common practice is to use dry or pre-action sprinkler system, but this can not staisfy the requirements of Code for Automatic Sprinkler System Design, which is for warehouse and similar places, only early suppression rapid response sprinkler head can be used. This paper explores how to realize the winter and summer transition between the pre-acting system and the wet system by adjusting the lever type rain valve or using the diaphragm type rain valve and the wet alarm valve in parallel. Meanwhile, the detection mode is improved to ensure the reliability of early warning and system water filling. In this way, the automatic sprinkler system can meet the requirements of automatic sprinkler system in non-heating tall warehouse buildings in cold areas.

Key words: Key words: cold area, warehouse buildings, automatic fire extinguishing system