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1. 发明专利

JPH08277703A CASING COOLING DEVICE OF STEAM TURBINE 失效
公开(公告)号：JPH08277703A
公开(公告)日：1996-10-22
申请号：JP8018495
申请日：1995-04-05
申请人： TOSHIBA CORP
发明人： YAMAGUCHI HIROSHI , KUROKI KEIICHI , TAZAKI SUSUMU , UNO KAORU
IPC分类号： F01D25/12 , F01D25/26
摘要： PURPOSE: To prevent mechanical strength from lowering by restricting a temperature rise of an outer casing within an allowable temperature of the material used. CONSTITUTION: An inlet sleeve 7, which guides the reheat steam from an inlet steam pipe 1 toward an inner casing 4, is arranged between the inner casing 4 and the inlet steam pipe 1 and fixed to the inlet steam pipe 1 by means of bolts (not illustrated). The inner casing 4 including the inlet sleeve 7 is covered with the outer casing 3, while a steam passage 8 in which the steam for cooling flows, is formed between the casing 3 and the casing 4 and between the inlet sleeve 7 and the inlet steam pipe 4. A steam outlet 9 is installed in the inlet steam pipe 1, and the steam passage 8 for cooling is connected to the steam outlet 9 at the outlet of the steam passage 8.

2. 发明专利

JPH0953404A STEAM TURBINE ROTOR 失效
公开(公告)号：JPH0953404A
公开(公告)日：1997-02-25
申请号：JP20429195
申请日：1995-08-10
申请人： TOSHIBA CORP
发明人： TAKAGI KENTARO , UNO KAORU , SHIBAGAKI TORU , NARITA MASAYUKI
IPC分类号： F01D5/06 , F01K7/18
摘要： PROBLEM TO BE SOLVED: To reduce the thermal stress generated at high/intermediate-pressure sections and reduce the bore stress at the portion of a low-pressure section where high centrifugal force is applied by setting the center holes of the high- temperature high-pressure section or/and intermediate-pressure section of a rotor and the center hole of the low-pressure section applied with the high centrifugal force different in diameter in a high (intermediate)/low-pressure integrated steam turbine rotor. SOLUTION: A center hole ϕd1 slightly larger than the center hole ϕd2, of a low-pressure section 4 is provided on a high-temperature high-pressure section 2 and an intermediate-pressure section 3 in a high (intermediate)/low- pressure integrated turbine rotor. The relatively large center hole ϕd1 is formed on the high-temperature high-pressure section 2 and the intermediate-pressure section 3, the thickness of the rotor at this portion is made small on the contrary, and the thermal stress generated at the time of excessive changes, e.g. at the time of a start and a stop, at this portion is reduced in the combined cycle requiring a quick start, for example. The time to reach the target load is shortened, an excellent operating characteristic is obtained, and the life of a steam turbine can be prolonged.

3. 发明专利

JP2005023809A Steam turbine 审中-公开
标题翻译：汽轮机
公开(公告)号：JP2005023809A
公开(公告)日：2005-01-27
申请号：JP2003189059
申请日：2003-06-30
申请人： Toshiba Aitekku Kk , Toshiba Corp , 東芝アイテック株式会社 , 株式会社東芝
发明人： NIIZEKI YOSHIKI , ARIMURA MASAO , UNO KAORU , TANUMA TADASHI , OTOMO FUMIO , TSUTSUI MASASHI
IPC分类号： F01D11/00 , F01D25/30
摘要： PROBLEM TO BE SOLVED: To provide a steam turbine equipped with a turbine exhaust chamber which realizes speeding up of assemble and disassemble work while improving higher static pressure recovery force of a diffuser.
SOLUTION: In the steam turbine, a turbine casing 20 is formed in the dual structure of an outer casing and an inner casing. A diffuser 29 configured by at least two of a chip flow guide 26, a route flow guide 27 and a bearing corn is provided to the outlet side of the inner casing. A turbine exhaust chamber 34 surrounded by the outer casing and the bearing corn 32 is provided to the outlet side of the diffuser 29. In the chip flow guide 26, the chip flow guide upper half part 26a is divided into a first chip flow guide 26a
1 and a second chip flow guide 26a
2 . While the divided first chip flow guide 26a
1 is fixed on the inner casing upper half part 26a, the other divided second chip flow guide 26a
2 is supported with a strut 33.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种配备有涡轮机排气室的蒸汽轮机，其实现加速组装和拆卸工作，同时提高扩散器的较高的静压恢复力。解决方案：在蒸汽涡轮机中，涡轮壳体20形成在外壳和内壳的双重结构中。由芯片流动引导件26，路径引导件27和轴承玉米中的至少两个构成的扩散器29设置在内壳的出口侧。由外壳和轴承玉米32包围的涡轮排气室34设置在扩散器29的出口侧。在芯片流动引导件26中，芯片流动引导件上半部26a被分成第一芯片流动引导件26a ＆lt; SB＆gt; 1＆lt; / SB＆gt;和第二芯片流动引导件26a＆lt; SB＆gt; 2＆lt; / SB＆gt ;. 当分割的第一芯片流动导向件26a 固定在内壳上半部26a上时，另一个分开的第二芯片流动导向件26a 支撑有支柱33。版权所有（C）2005，JPO＆NCIPI

4. 发明专利

JP2004353629A Steam turbine 有权
公开(公告)号：JP2004353629A
公开(公告)日：2004-12-16
申请号：JP2003155681
申请日：2003-05-30
申请人： Toshiba Aitekku Kk , Toshiba Corp , 東芝アイテック株式会社 , 株式会社東芝
发明人： NIIZEKI YOSHIKI , ARIMURA MASAO , UNO KAORU , TANUMA TADASHI , SAEKI YUSHI , TSUTSUI MASASHI
IPC分类号： F01D11/00 , F01D11/02 , F01D25/30 , F16J15/18 , F16J15/22 , F16J15/447
摘要： PROBLEM TO BE SOLVED: To provide a steam turbine equipped with an exhaust hood for improving the static pressure recuperability of a diffuser and expediting the assembling/disassembling of the same.
SOLUTION: The steam turbine comprises a turbine casing 20 having a dual structure of outer casings 20a
1 and 20a
2 and an inner casing 20 b
1 and a diffuser 29 composed of a tip flow guide and a root flow guide at the outlet side of the inner casing 20b
1 . It further comprises a turbine exhaust hood 34 surrounded with the outer casing and a bearing cone 32 at the outlet side of the diffuser 29. The upper half 26a of the tip flow guide 26 is supported by a strut 33.
COPYRIGHT: (C)2005,JPO&NCIPI

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