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1. 发明授权

US4434976A Concentric multi-tube-system nozzle situated beneath the surface of the melt in a refining vessel 失效
标题翻译：在精炼容器中位于熔体表面下方的同心多管系统喷嘴
公开(公告)号：US4434976A
公开(公告)日：1984-03-06
申请号：US448325
申请日：1982-12-09
申请人： Shozo Murakami , Hiroyuki Aoki , Saburo Matsuo , Eiji Ikezaki , Kenji Yamaura
发明人： Shozo Murakami , Hiroyuki Aoki , Saburo Matsuo , Eiji Ikezaki , Kenji Yamaura
IPC分类号： C21C5/34 , C21C5/48 , C21B7/16
CPC分类号： C21C5/48 , C21C5/34
摘要： The present invention relates to a concentric multi-tube-system nozzle situated beneath the surface of the melt in a refining vessel, especially a refining vessel for converting molten pig iron into steel.The stability and life of the concentric double-tube nozzle is the most crucial factor in carrying out refining in a bottom-blown converter.In accordance with the present invention, there is provided a concentric multi-tube-system nozzle situated beneath the surface of the melt in a refining vessel, comprising:an inner tube;an outer tube positioned concentrically with respect to the inner tube and forming an annular clearance between the inner tube and the outer tube;spacers for circumferentially dividing the annular clearance; anda section defined by two adjacent spacers, the section comprising a contraction portion which is positioned essentially at the upstream side of the section. The contraction portion contributes to a uniform cooling of concentric double-tube nozzle in the circumference thereof.
摘要翻译：本发明涉及位于精炼容器内的熔体表面下方的同心多管系喷嘴，特别是用于将生铁转化成钢的精炼容器。同心双管喷嘴的稳定性和寿命是在底吹转炉中进行精炼的最关键因素。根据本发明，提供了一种在精炼容器中位于熔体表面下方的同心多管系统喷嘴，包括：内管; 外管相对于内管同心地定位并在内管和外管之间形成环形间隙; 用于周向地分隔环形间隙的间隔件; 以及由两个相邻间隔件限定的部分，该部分包括基本位于该部分的上游侧的收缩部分。收缩部分有助于同心双管喷嘴在其圆周上的均匀冷却。

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