公开(公告)号：US4460311A

公开(公告)日：1984-07-17

申请号：US265849

申请日：1981-05-21

申请人： Klaus Trappmann ,  Wolfgang Kruger

发明人： Klaus Trappmann ,  Wolfgang Kruger

IPC分类号： F01D11/08 ,  F01D5/20 ,  F01D11/12 ,  F01D11/24 ,  F01D25/14

CPC分类号： F01D11/24 ,  F01D11/12 ,  F01D25/145 ,  F05D2260/201

摘要： Apparatus and method for minimizing and maintaining substantially constant the effective blade tip clearance between the outer free ends of rotor blades and an adjacent casing shroud of an axial-flow turbine of a gas turbine engine. The casing shroud includes a portion facing the hot gas stream and the outer rotor blade ends and a packing of high heat-resistance, high erosion-resistance ceramic elements secured to the shroud via a metal ring to face the blade tips. A heat insulator is interposed between the packing and the metal ring. A perforated conduit is mounted outside the metal ring for blowing cooling fluid against the metal ring on the side thereof remote from the insulator for equalizing the expansion of the metal ring to that of the turbine wheel. The ceramic packing includes projections facing the outer ends of the blades which are tapered so that they are easily broken off when coming into contact with the blades during running-in of the apparatus.

摘要翻译： 用于使转子叶片的外部自由端和燃气涡轮发动机的轴流涡轮机的相邻壳体护罩之间的有效叶片顶端间隙基本上恒定的装置和方法。 壳体护罩包括面向热气流的部分和外转子叶片端部以及通过金属环固定到护罩上以面对叶片尖端的高耐热性，高耐腐蚀性陶瓷元件的填料。 绝热体介于填料和金属环之间。 穿孔导管安装在金属环的外侧，用于将金属环的冷却流体远离绝缘体的一侧吹向金属环，用于均衡金属环与涡轮机轮的膨胀。 陶瓷填料包括面向叶片的外端的突起，其是锥形的，使得当在装置进入期间与叶片接触时它们容易断裂。

公开(公告)号：US4439982A

公开(公告)日：1984-04-03

申请号：US393920

申请日：1982-06-30

申请人： Wolfgang Weiler ,  Klaus Trappmann

发明人： Wolfgang Weiler ,  Klaus Trappmann

IPC分类号： F01D11/08 ,  F01D11/10 ,  F02C7/18 ,  F01D25/12

CPC分类号： F01D11/08 ,  F05D2260/201 ,  Y02T50/676

摘要： An annular sleeve surrounds a turbine rotor and is fixed to a stationary part, the sleeve being elastically deformable in a radial direction. A wear ring is carried by the sleeve, the wear ring being composed of segments arranged end-to-end circumferentially. The adjacent ends of the segments are spaced apart at all operating conditions of the turbine. The thermal expansions of the turbine rotor and of the sleeve and ring are so related that under operating conditions of the turbine, when the engine of which it forms a part is running, the sleeve thermally expands radially. The rate of thermal expansion of the stationary part is directly related to the rate of thermal expansion of the turbine rotor. Air leaving the compressor is directed against the sleeve and the stationary part carrying the sleeve. The wear ring and portion carrying the sleeve may be insulated. The sleeve may be mounted on a combustion chamber surrounding the turbine.

摘要翻译： 环形套管围绕涡轮转子并且固定到静止部分，套筒可沿径向方向弹性变形。 磨损环由套筒承载，磨损环由周向端对端设置的段组成。 在涡轮机的所有操作条件下，段的相邻端部间隔开。 涡轮转子和套筒和环的热膨胀与涡轮机的运行条件相关，当其形成部件的发动机正在运行时，套筒热膨胀。 固定部件的热膨胀率与涡轮转子的热膨胀率直接相关。 离开压缩机的空气被引导抵靠套筒和承载套筒的固定部分。 磨损环和承载套筒的部分可以是绝缘的。 套筒可以安装在围绕涡轮机的燃烧室上。

公开(公告)号：US4439981A

公开(公告)日：1984-04-03

申请号：US393919

申请日：1982-06-30

申请人： Wolfgang Weiler ,  Klaus Trappmann

发明人： Wolfgang Weiler ,  Klaus Trappmann

IPC分类号： F01D11/08 ,  F01D11/10 ,  F02C7/18 ,  F01D25/12

CPC分类号： F01D11/08 ,  F05D2260/201 ,  Y02T50/676

摘要： An annular sleeve surrounds a turbine rotor and is fixed with respect to the turbine casing, the sleeve being elastically deformable in a radial direction. A wear ring is carried by the sleeve, the wear ring being composed of segments arranged end-to-end circumferentially. The adjacent ends of the segments are spaced apart when the turbine is cold or idling. The thermal expansions of the turbine rotor and of the sleeve and ring are so related that in one operating temperature range of the turbine the spaces between the adjacent ends of the ring segments close and the segment ends engage each other, and in a higher operating temperature range of the turbine the sleeve expands. Air leaving the compressor is directed against the sleeve and the stationary part carrying the sleeve. The wear ring and portion carrying the sleeve may be insulated. The sleeve may be mounted on a combustion chamber surrounding the turbine.

摘要翻译： 环形套筒围绕涡轮机转子并相对于涡轮机壳体固定，套筒可沿径向方向弹性变形。 磨损环由套筒承载，磨损环由周向端对端设置的段组成。 当涡轮机冷或空转时，分段的相邻端部间隔开。 涡轮转子和套筒和环的热膨胀与涡轮机的一个操作温度范围相关联，即环形段的相邻端部之间的空间关闭并且分段端部彼此接合，并且在更高的工作温度 涡轮机的范围扩大。 离开压缩机的空气被引导抵靠套筒和承载套筒的固定部分。 磨损环和承载套筒的部分可以是绝缘的。 套筒可以安装在围绕涡轮机的燃烧室上。