公开(公告)号：US06537023B1

公开(公告)日：2003-03-25

申请号：US10028926

申请日：2001-12-28

申请人： Mahmut Faruk Aksit ,  Ahmad Safi ,  Abdul-Azeez Mohammed-Fakir ,  Gilbert Joseph Dean ,  Thomas Paul Martin

发明人： Mahmut Faruk Aksit ,  Ahmad Safi ,  Abdul-Azeez Mohammed-Fakir ,  Gilbert Joseph Dean ,  Thomas Paul Martin

IPC分类号： F01D904

CPC分类号： F16J15/0887 ,  F01D11/005 ,  F02C7/28

摘要： In a gas turbine having a chordal hinge seal between an inner rail of each nozzle segment and an annular axially facing sealing surface of a nozzle support ring, a supplemental seal is disposed between the support ring and inner rail of the nozzle segment on a high pressure side of the chordal hinge seal. The supplemental seal includes a sheet metal seal supported by a bracket secured to the back side and radial inner surfaces of the inner rail. The sheet metal seal has a flexible margin which is preloaded and bears against the annular sealing surface of the nozzle support ring. The bracket is bolted or welded to the inner rail with the sheet metal seal therebetween inhibiting or precluding leakage past the back side of the supplemental seal.

摘要翻译： 在具有在每个喷嘴段的内轨道和喷嘴支撑环的环形轴向相对的密封表面之间具有弦状铰链密封件的燃气轮机中，在高压下在喷嘴段的支撑环和内轨道之间设置补充密封 侧面铰链密封。 补充密封件包括由固定到内轨的后侧和径向内表面的支架支撑的金属板密封件。 金属板密封件具有预先加载并抵靠喷嘴支撑环的环形密封表面的柔性边缘。 支架被螺栓连接或焊接到内轨上，其间的金属板密封件阻止或排除通过辅助密封件背面的泄漏。

公开(公告)号：US06520836B2

公开(公告)日：2003-02-18

申请号：US09794404

申请日：2001-02-28

申请人： Gilbert Joseph Dean ,  David Williams ,  Kenneth Lorenzo Parks ,  Rachel Elizabeth Kyano ,  Benjamin Erick Baker ,  Hui Kuang

发明人： Gilbert Joseph Dean ,  David Williams ,  Kenneth Lorenzo Parks ,  Rachel Elizabeth Kyano ,  Benjamin Erick Baker ,  Hui Kuang

IPC分类号： B24B100

CPC分类号： B23P6/002 ,  B24B1/00 ,  B24B19/14 ,  F01D5/005 ,  F05D2230/10 ,  F05D2230/80 ,  F05D2250/232 ,  F05D2250/292 ,  Y10T29/49336 ,  Y10T29/49339 ,  Y10T29/49995

摘要： The trailing edge of a turbine bucket is cut back from a root portion of the bucket to a location 50-75% of the span of the bucket. The cutback portion is tapered, forming an obtuse angle between it and the remaining original portion of the trailing edge outwardly of the cutback portion. A new conical section is thus created of a slightly larger conical and, hence, transverse configuration. The crack is removed upon removal of the material forming the cutback. With the edges of the recreated conical section surrounded, the cutback portion assumes a scalloped configuration with the exit openings of the cooling holes as seen from opposite sides of the bucket.