公开(公告)号：EP2314831A1

公开(公告)日：2011-04-27

申请号：EP10183864.7

申请日：2005-05-13

申请人： Carlton Forge Works

发明人： Cardarella, James L. Jr.

IPC分类号： F01D11/14 ,  F01D11/20

CPC分类号： F01D11/22 ,  F01D11/02 ,  F01D11/18 ,  F01D21/045 ,  F01D25/24 ,  F05B2260/301 ,  F05D2240/14 ,  F05D2240/55 ,  F05D2250/182 ,  F05D2250/292 ,  F05D2300/702 ,  Y02T50/672

摘要： A low or high pressure turbine case (204) is machined on its outside surface to form circumferential notches (302). The notches may coincide with internal locations of seals (210) for the blades (208) or with "hot spots" that have been identified, for example. A stiffener ring (304) may be shrunk with an interference fit into each notch (302) through inducing temperature differentials between the ring and the case. The radially compressive circumferential force exerted by each ring can inhibit the low or high pressure turbine case from expanding as much as it would otherwise. In some applications, a stiffener ring can improve blade tip clearance or counterbalance "hot spots", stiffen the case, improve case cooling, or other benefits, depending upon the particular application.

摘要翻译： 在其外表面上加工低压或高压涡轮机壳（204）以形成圆周凹口（302）。 例如，切口可与用于叶片（208）的密封件（210）的内部位置或已经被识别的“热点”重合。 可以通过引起环和壳体之间的温差，使加强环（304）通过过盈配合收缩到每个凹口（302）中。 每个环施加的径向压缩圆周力可以抑制低压或高压涡轮机壳体的扩张，否则会增加。 在一些应用中，取决于具体应用，加强环可以改善叶片顶端间隙或平衡“热点”，加强壳体，改善壳体冷却或其他益处。

公开(公告)号：EP1774141B1

公开(公告)日：2011-03-30

申请号：EP05849434.5

申请日：2005-05-13

申请人： Carlton Forge Works

发明人： Cardarella L. James Jr.

IPC分类号： F01D11/14

CPC分类号： F01D11/22 ,  F01D11/02 ,  F01D11/18 ,  F01D21/045 ,  F01D25/24 ,  F05B2260/301 ,  F05D2240/14 ,  F05D2240/55 ,  F05D2250/182 ,  F05D2250/292 ,  F05D2300/702 ,  Y02T50/672

摘要： In one embodiment, a low or high pressure turbine case (204) is machined on its outside surface to form circumferential notches (302). The notches may coincide with internal locations of seals (210) for the blades (208), or with 'hot spots' that have been identified, for example. A stiffener ring (304) may be shrunk with an interference fit into each notch (302) through inducing temperature differentials between the ring and the case. The radially compressive circumferential force exerted by each ring can inhibit the low or high pressure turbine case from expanding as much as it would otherwise. In some applications, a stiffener ring can improve blade tip clearance or counterbalance 'hot spots', stiffen the case, improve case cooling, or other benefits, depending upon the particular application. In one embodiment, notches may be avoided. In an alternate embodiment, C-rings, or multiple segmented rings, may be coupled together by hydraulic, electrical, or other means and actuated by a controller to exert adjustable radially compressive circumferential force. Other embodiments are described and claimed.