发明名称 |
Method and apparatus for eliminating thermal bowing and axial thrust loads of steam turbine rotors |
摘要 |
In a steam turbine, a combined brush and labyrinth seal is provided between a diaphragm web and axial projecting platforms on bucket dovetails at a location spaced radially outwardly of the outer diameter of the rotor. The downstream axially adjacent bucket dovetails also have platforms serving as complementary sealing surfaces to labyrinth teeth formed on the web. By locating the combined labyrinth and brush seal radially outwardly of the outer diameter of the shaft, thermal bowing of the rotor is eliminated. By providing backup labyrinth seals at the same radial location, axial thrust loads are eliminated in the event of brush seal failure.
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申请公布号 |
US6517314(B1) |
申请公布日期 |
2003.02.11 |
申请号 |
US20010985638 |
申请日期 |
2001.11.05 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
BURNETT MARK EDWARD;TURNQUIST NORMAN ARNOLD;WOLFE CHRISTOPHER EDWARD;BRISSON BRUCE WILLIAM;BAILY FREDRICK GEORGE;CARUSO DAVID ALAN |
分类号 |
F01D11/00;F16J15/32;(IPC1-7):F01D11/00 |
主分类号 |
F01D11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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