天铁集团炼铁厂四号高炉主卷电路的改造和调试

Modification and Commissioning of Main Hoist Circuit of Tiantie Group BF 4

在天铁集团炼铁厂四号高炉进行中修期间,对已经老化的主卷扬电机老化的控制装置进行了更换。为达到对其进行调速控制的目的,对其控制电路进行了改造。在调试过程中,还解决了右车装矿电机启动力矩过小的问题。经过一年多的运行,实践表明,改造后电器控制系统运行稳定,故障显著减少,满足了高炉上料要求。

The aged electric control device of main hoist DC motor was replaced during intermediate maintenance at BF4, Iron-making Subsidiary, Tiantie Group. Its control circuit was modified to achieve variable speed control of main hoist motor and eliminate the problem of small start torque of right carriage’s charging motor during commissioning course. More than one year’s running of the electric control device showed few failures and the charging demand of blast furnace was met.