公开(公告)号：US5605438A

公开(公告)日：1997-02-25

申请号：US580694

申请日：1995-12-29

申请人： Steven S. Burdgick ,  John R. Hess ,  Gary D. Mercer ,  Gregory A. Crum ,  James E. Cencula ,  John A. Eastman

发明人： Steven S. Burdgick ,  John R. Hess ,  Gary D. Mercer ,  Gregory A. Crum ,  James E. Cencula ,  John A. Eastman

IPC分类号： F01D25/14 ,  F01D25/24 ,  F01D25/26

CPC分类号： F01D25/26 ,  F01D25/145 ,  F01D25/24 ,  F01D25/243

摘要： A turbine casing is provided in two casing halves joined one to the other along a horizontal splitline having flanges with spaced boltholes. A circumferentially extending rib is provided about each casing half at a location just forward of the turbine buckets to minimize or eliminate distortion caused by internal pressure and meridional roll of the casing. One or more axially extending ribs is provided on each casing half. The axial ribs have a radial stiffness which substantially matches the stiffness and thermal response of the flanges.

摘要翻译： 涡轮机壳体设置在沿着具有间隔开的螺栓的凸缘的水平分裂线彼此连接的两个半壳体中。 围绕每个壳体半部在靠近涡轮机叶片的位置处设置周向延伸的肋，以最小化或消除由壳体的内部压力和子午线引起的变形。 在每个壳体半部上设置一个或多个轴向延伸的肋。 轴向肋具有基本上匹配凸缘的刚度和热响应的径向刚度。