大型变压器的消防(外国英语资料).docVIP

大型变压器的消防 Large transformer fire is one of the most important topics in water spray extinguishing system came into being, however unsatisfactory, it summarizes the past experiences and lessons, to develop a new type of intelligent outdoor large transformer water spray extinguishing system, and introduces the systems function. Key words: large transformer, new intelligent water spray fire extinguishing system, system function 1 example of large transformer fire In December 1991, a Beijing 220kV substation of a 120MVA three thin insulated coil of the main transformer internal fault due to fire, because there is no fixed station water spray extinguishing device with sufficient water and fire, the fire in ten minutes after more than 30 fire engines arrived one after another, fighting near 7h party put out a fire, because there is no completely cool, 7h after again, nearly 20 fire engines arrived again saves transformer scrap. In February 1997, a three 120MVA main transformer coil Beijing another 220kV substation for high voltage bushing explosion and fire, a few minutes after the fire truck arrived, fire with water, with water will run out in the station, duty personnel to manually start the water spray device, in the joint efforts of firefighters and officers on duty. To effectively control the fire and put it out. In the meantime, the water spray system has played a supporting role and cool down, and if only the fire engine comes with water, it is difficult to put out the fire. At the same time, we can see that fire fighting is the key factor in fighting fires. The transformer has no major damage to the other parts except that the sleeve is broken and the coils need to be dried. 2, specifications on the main transformer fire protection requirements 2.1 code for design of water spray extinguishing system (GB5021995) (hereinafter referred to as standard): water spray extinguishing system response time, when used for fire should not be greater than 45s; spray nozzle shoul