发明名称 |
GAS TURBINE STEAM PASSAGE SEAL STRUCTURE BETWEEN BLADE RING AND STATIONARY BLADE |
摘要 |
Gas turbine steam passage seal structure between a blade ring and a stationary blade absorbs thermal deformation to prevent occurrence of minute gaps to thereby reduce leakage of steam as cooling medium. A blade ring steam passage hole, provided in the blade ring (10), has a stepped portion formed in a middle portion thereof. A stationary blade steam passage hole, provided in the stationary blade (50) so as to oppose the blade ring steam passage hole, has a stepped portion formed in an outer peripheral portion thereof. A cooling steam supply passage connection portion is constructed comprising a seal pipe (25) provided between the blade ring and stationary blade steam passage holes so as to communicate them with each other and a seal urging guide device (44, 47) provided at each of the stepped portions of the blade ring and stationary blade steam passage holes so as to effect a seal while fixedly supporting the seal pipe (25). Leakage of the steam is reduced, temperature lowering of combustion gas is prevented, drive force of a steam turbine is increased and the entire thermal efficiency of the combined cycle power plant can be enhanced.
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申请公布号 |
CA2363136(C) |
申请公布日期 |
2005.04.19 |
申请号 |
CA20012363136 |
申请日期 |
2001.11.16 |
申请人 |
MITSUBISHI HEAVY INDUSTRIES, LTD. |
发明人 |
KUNITAKE, NOBUHIRO;HIROKAWA, KAZUHARU;TANIOKA, TADATERU;OYA, TAKEAKI |
分类号 |
F01D9/02;F01D9/06;F01D11/00;F02C7/18;F02C7/28;(IPC1-7):F01D11/04;F01D5/08;F01D5/18 |
主分类号 |
F01D9/02 |
代理机构 |
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代理人 |
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地址 |
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