北京钢铁设计研究总院和首都炼铁厂,为改善高炉炉前操作条件,减轻笨重体力劳动实现炉前操作机械化,经两年多的调查与试验研究,已于1977年9月在首钢3号高炉首次采用机械换风口成功。首钢3号高炉换风口机是按以下原则设计的:第一,在围管下装环梁,换风口机采用吊挂式。第二,原弯头大而重,装卸不易,采用将弯头吊转90 Beijing Iron and Steel Design and Research Institute and the capital ironworks, in order to improve blast furnace operating conditions, reduce heavy manual labor mechanization of the furnace operation, after more than two years of investigation and experimental study, in September 1977 at Shougang 3 Blast furnace for the first time a mechanical outlet for success. Shougang No. 3 blast furnace air changer is designed according to the following principles: First, the ring tube installed under the ring beam, air changer hanging. Second, the original elbow large and heavy, handling is not easy, the elbow hanging 90