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高炉煤气管道上装有电除尘器,其进出口处装有φ1200科林格式插板阀,主要用于切断煤气(温度约250℃,压力650～1000毫米水柱).各钢铁厂现场操作人员普遍反映该阀的操作极为困难和危险.主要原因是:插板夹紧装置的开闭是由两个人拉链条转动链轮来进行,而插板的升降则靠手摇蜗轮去转动卷筒钢丝绳来实现.因高炉煤气毒性很大,工人在现场操作时间长,以致多次发生过
Blast furnace gas pipeline is equipped with electrostatic precipitator, the inlet and outlet with φ1200 Colin style plug-in valve, mainly for cutting off the gas (temperature about 250 ℃, pressure 650 ~ 1000 mm water column.) The scene of the steel plant operators generally reflect The operation of the valve is extremely difficult and dangerous.The main reason is that the opening and closing of the clamping device of the plug-in board is carried out by two persons rotating the sprocket to pull the chain, and the lifting and lowering of the plugboard is realized by rotating the rolling wire rope by the hand-cranked worm wheel. Due to the high toxicity of blast furnace gas, workers in the field for a long time, resulting in multiple occurrences