更换探尺用的探尺阀原来是旋塞式,但其中的旋塞2因炉顶温度较高煤气中灰尘又多,常使阀2与外壳3紧固在一起难以转动,转轴A—A断面处常被扭断,探尺不能使用。三高炉这次大修中,吸取了大钟均压阀设计的优点,将探尺阀改成如图所示的转轴密封阀。这种型式大大减少 Replacing the probe with a feeler probe was originally a cock, but the cocks 2 due to the high temperature of the top of the furnace gas dust and more often make the valve 2 and the housing 3 is difficult to rotate together with the rotation axis A-A Often be broken, the probe can not be used. Three blast furnace this overhaul, drawing on the advantages of large bell pressure valve design, the probe valve into the shaft sealing valve as shown. This type is greatly reduced