北京某单位,使用的一台 KZL 4—13—AⅡ型蒸汽锅炉,投入运行不到二个月,便多次发生炉排片拉裂,炉排串轴销折弯,最严重时连带动链条炉排运行的变速齿轮箱的联轴器也产生裂纹,最后不得不紧急停炉,进行彻底检修。经查,该锅炉在出厂前,链条炉排装配完毕后,冷态运行试车时间不少于2小时,并经过鎯头锤击炉排工艺性能试验,炉排均无起拱、跑偏、卡住等现象。是什么原因导致链条炉 Beijing unit, using a KZL 4-13-A Ⅱ type steam boiler, put into operation in less than two months, there will be multiple occurrence of grate rupture, grate shaft pin bending, the most serious when linked chain furnace Row of running gearbox coupling also crack, and finally had to emergency shutdown, a thorough overhaul. After investigation, the boiler at the factory, the chain grate assembly is completed, the cold running time of not less than 2 hours test, and after the first hammer pounding grate performance test, the grate without arch, deviation, the card Live and other phenomena. What causes the chain stove