发明名称 |
Method of repairing a threaded generator rotor blower assembly |
摘要 |
A method of repairing a generator blower hub assembly ( 12 ) and rotor blade ( 10 ) removed from the generator blower hub assembly ( 12 ) where the rotor blade ( 10 ) has fatigued material in threads of a threaded blade root ( 14 ). The method may include removing ( 32 ) at least a portion of the fatigued material to form the blade root ( 14 ) to a first or new diameter. Threads may be formed ( 36 ) on the diameter of the blade root ( 14 ) using a roll forming process. A collar ( 20 ) may be secured within a threaded hole ( 16 ) formed in the generator blower hub assembly ( 12 ) where the collar ( 20 ) includes internal threads ( 35 ) for receiving the threads formed on the diameter of the blade root ( 14 ), which may be threaded into the collar ( 20 ). Collar ( 20 ) may be fabricated of steel alloy and include relief groove ( 40 ) for improving the fatigue resistance of the threaded blade root ( 14 ) when reassembled into the generator blower hub assembly ( 12 ).
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申请公布号 |
US7431565(B2) |
申请公布日期 |
2008.10.07 |
申请号 |
US20050122569 |
申请日期 |
2005.05.05 |
申请人 |
SIEMENS POWER GENERATION, INC. |
发明人 |
HERNANDEZ GABRIEL;MALLAT JEFFREY RICHARD |
分类号 |
F01D5/30 |
主分类号 |
F01D5/30 |
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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