公开(公告)号：US5593278A

公开(公告)日：1997-01-14

申请号：US568223

申请日：1983-12-30

申请人： Gerard E. A. Jourdain ,  Jean-Paul Lagrange ,  Gerard M. F. Mandet ,  Jacques H. Mouchel ,  Jean-Philippe E. Richard ,  Marcel R. Soligny

发明人： Gerard E. A. Jourdain ,  Jean-Paul Lagrange ,  Gerard M. F. Mandet ,  Jacques H. Mouchel ,  Jean-Philippe E. Richard ,  Marcel R. Soligny

IPC分类号： F01D11/08 ,  F01D11/12 ,  F01D11/14 ,  F01D11/18 ,  F01D11/24 ,  F01D25/24

CPC分类号： F01D11/18 ,  F01D25/246 ,  Y02T50/67 ,  Y02T50/671

摘要： The disclosed invention relates to a sealing device for the rotor blades of a gas turbine engine which permits real time adjustment to be made of the clearances between the rotor blade tips and the sealing structure. The sealing shroud around the turbine wheel is formed of sectors, each sector being attached to a monolithic short response time ring and a monolithic long response time ring. Ventilating air from upstream of the turbine wheel is directed onto the rings such that the sectors are caused to radially expand or contract in compliance with the expansion or contraction of the tips of the rotor blades during stabilized and transient engine operational modes. A small positive clearance between the sealing sectors and the blade tips is maintained throughout the range of the engine's operation.

摘要翻译： 所公开的本发明涉及一种用于燃气涡轮发动机的转子叶片的密封装置，其允许由转子叶片尖端和密封结构之间的间隙进行实时调节。 涡轮机轮周围的密封罩由扇形部分组成，每个扇形部分连接到单片短响应时间环和单片长响应时间环。 涡轮机叶轮上游的通风空气被引导到环上，使得在稳定和瞬态的发动机操作模式期间，这些扇区在转子叶片的尖端的膨胀或收缩下被引起径向膨胀或收缩。 在发动机运行的整个范围内，保持密封扇区和叶片尖端之间的小的正间隙。