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鄂钢1号高炉(544m~3)钟式炉顶是七十年代初设计的,1979年投产。大钟漏斗与炉顶支圈、气封罩之间两接触面以φ18×2紫铜管内穿一根浸铅油钢丝石棉绳作密封填料。用M36×150螺栓连接,将大钟漏斗夹紧固定密封。另用两圈δ=5mm钢板组成“<”形密封圈焊在大钟上,同时分别与炉顶支圈、气封罩焊牢增强密封可靠性(“<”形密封圈具有一定变形量,便于螺栓再次收紧)。这种固定密封形式效果不大理想。螺栓虽可再次收紧。但是,一旦出现泄漏煤气,紫铜管已被煤气冲刷损坏,因该处支撑约76t重的炉顶装料设备,一般情况下不可能将其拆开清除残损填料。造成检修困难。采取浇灌耐火填
E steel No. 1 blast furnace (544m ~ 3) bell roof is designed in the early seventies, put into operation in 1979. Large bell funnel and the top of the furnace circle, gas seal between the two contact surfaces to the φ18 × 2 copper tube to wear a dip lead oil wire asbestos rope sealing filler. M36 × 150 bolt connection, the large funnel clamp tight seal. The other two δ = 5mm steel plate composed of “<” ring welded on the clock, at the same time, respectively, with the top of the furnace, gas seal welding enhanced sealing reliability ( “<” A certain amount of deformation, easy to tighten the bolt again). This form of fixed seal less effective. Bolt can be tightened again. However, in the event of a leaking gas, the copper tubing has been damaged by gas scrubbing, where it supports approximately 76 tons of top loading equipment, which in general can not be disassembled to remove any damaged packing. Caused maintenance difficulties. Take watering fireproof fill