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某厂热电车间安装有蒸发量35吨/时的中压抛煤机链条炉排锅炉四台,六千千瓦背压式汽轮发电机组一套,供给全厂工艺生产用汽及部分用电。但是,锅炉在投入运行后仅三个半月就接连发生了爆管事故,严重地影响了生产。一、事故情况第一次爆管发生在仅运行了105天的2~#炉上。当时,2~#炉从热备用状态转入运行,当锅炉的压力从32公斤/厘米~2上升到35公斤/厘米~2时,炉内出现了“沙沙”的声响,炉膛产生正压。停炉检查时发现,过热器低温段的一根管
A thermal power plant in a plant installed evaporation of 35 tons / hour medium pressure coal mill chain grate boilers, six thousand kilowatts back pressure turbine generator set for the whole plant production of steam and part of the electricity. However, after three months and a half of operation of the boiler, a series of squib accidents have taken place, seriously affecting production. First, the accident situation burst pipe occurred in the first run only 105 days 2 ~ # furnace. At that time, 2 ~ # furnace from the standby state into operation, when the boiler pressure from 32 kg / cm ~ 2 rose to 35 kg / cm ~ 2, the furnace appeared “salsa ” sound, hearth positive Pressure Stop furnace inspection found that the superheater of a tube of low temperature