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1. 发明授权

US06565311B2 Gas turbine steam passage seal structure between blade ring and stationary blade 失效
公开(公告)号：US06565311B2
公开(公告)日：2003-05-20
申请号：US09988720
申请日：2001-11-20
申请人： Takeaki Oya , Kazuharu Hirokawa , Tadateru Tanioka , Nobuhiro Kunitake
发明人： Takeaki Oya , Kazuharu Hirokawa , Tadateru Tanioka , Nobuhiro Kunitake
IPC分类号： F01D906
CPC分类号： F01D11/00 , F01D9/065
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.

2. 发明授权

US06688847B2 Shaft structure and bearing structure for tail end of rotor of gas turbine 有权
标题翻译：燃气轮机转子尾端轴结构和轴承结构
公开(公告)号：US06688847B2
公开(公告)日：2004-02-10
申请号：US09942619
申请日：2001-08-31
申请人： Takeaki Oya , Kazuharu Hirokawa , Tadateru Tanioka , Tanehiro Shinohara , Katsunori Tanaka , Kazuo Uematsu
发明人： Takeaki Oya , Kazuharu Hirokawa , Tadateru Tanioka , Tanehiro Shinohara , Katsunori Tanaka , Kazuo Uematsu
IPC分类号： F01D508
CPC分类号： F01D5/085 , F01D5/08 , F01D25/125 , F05D2240/61 , F05D2260/205 , F05D2260/2322
摘要： A shaft structure of a rotor tail end of a gas turbine in which a steam passage for supplying and recovering a steam for cooling rotor blades of the gas turbine extends along a center axis of the rotor assembly of the gas turbine is provided, wherein a center hole of the rotor tail end coaxial to the center axis of the steam passage is formed in the rotor tail end. Provision is also made of a thermal sleeve between the steam passage and the inner surface of the center hole of the rotor tail end, so that a thermal insulation gas layer is formed between the inner surface of the center hole of the rotor tail end and the thermal sleeve. The thermal insulation gas layer is isolated gas-tightly and liquid-tightly from the outside.
摘要翻译：提供一种燃气轮机的转子尾端的轴结构，其中用于供应和回收用于冷却燃气涡轮机的转子叶片的蒸汽的蒸汽通道沿着燃气轮机的转子组件的中心轴延伸，其中中心在转子尾端形成有与蒸汽通道的中心轴同轴的转子尾端的孔。在蒸汽通道和转子尾端的中心孔的内表面之间还设置有热套筒，使得在转子尾端的中心孔的内表面和热套。绝热气体层从外部气密地液密隔离。

3. 发明申请

US20100220944A1 JOURNAL BEARING 有权
标题翻译：日志轴承
公开(公告)号：US20100220944A1
公开(公告)日：2010-09-02
申请号：US12623704
申请日：2009-11-23
申请人： Yuichiro Waki , Takashi Nakano , Shingo Yamasue , Shingo Tanaka , Takaaki Kaikogi , Kazuharu Hirokawa
发明人： Yuichiro Waki , Takashi Nakano , Shingo Yamasue , Shingo Tanaka , Takaaki Kaikogi , Kazuharu Hirokawa
IPC分类号： F16C13/00
CPC分类号： F16C33/1025 , F16C17/03 , F16C32/067 , F16C32/0685 , F16C33/08 , F16C33/108 , F16C33/1085 , F16C2360/00
摘要： To reduce the amount of lubricating oil released (supplied) between the outer circumferential surface of a rotation shaft and the inner circumferential surfaces of pads, so as to reduce the churning loss, and to reduce the bearing loss. The journal bearing comprises: a plurality of pads arranged radially inside a lower half-carrier ring at intervals, for receiving load from the rotation shaft; and a plurality of pad stops respectively arranged at the circumferentially opposite ends of the respective pads, for restraining circumferential movements of the respective pads, wherein, among these pad stops, the pad stops other than the pad stop located in the most forward position in the axial rotation direction of the rotation shaft have functions as oiling nozzles for releasing lubricating oil between the outer circumferential surface of the rotation shaft and the inner circumferential surfaces of the pads.
摘要翻译：为了减少在旋转轴的外周面和垫的内周面之间释放（供给）的润滑油的量，以减少搅动损失，并且减小轴承损耗。轴颈轴承包括：间隔地布置在下半载体环径向内的多个垫，用于从旋转轴接收负载; 以及分别布置在相应焊盘的周向相对端处的多个焊盘挡块，用于限制各个焊盘的周向运动，其中，在这些焊盘挡块之间，除了位于最前面位置的焊盘挡块之外的焊盘挡块旋转轴的轴向旋转方向具有用于在旋转轴的外周面和垫的内周面之间释放润滑油的上油嘴的功能。

4. 发明申请

US20070234703A1 Sealing structure of spindle bolt, and gas turbine 审中-公开
标题翻译：主轴螺栓和燃气轮机的密封结构
公开(公告)号：US20070234703A1
公开(公告)日：2007-10-11
申请号：US11230568
申请日：2005-09-21
申请人： Kazuo Uematsu , Kazuharu Hirokawa
发明人： Kazuo Uematsu , Kazuharu Hirokawa
IPC分类号： F02C7/00
CPC分类号： F02C7/18 , F01D5/066 , F01D5/085 , F01D11/005 , F05D2260/2322 , Y10S277/923 , Y10T403/75
摘要： A first stage rotor disk (50a) and a connecting member (30) on the compressor side are fixed by a spindle bolt (20). The spindle bolt (20) is covered with a tubular member (100), between the first stage rotor disk (50a) and the connecting member (30) on the compressor side.
摘要翻译：压缩机侧的第一级转子盘（50a）和连接构件（30）通过主轴螺栓（20）固定。主轴螺栓（20）在第一级转子盘（50a）和压缩机侧的连接构件（30）之间被管状构件（100）覆盖。

5. 发明授权

US06224327B1 Steam-cooling type gas turbine 有权
标题翻译：蒸汽式燃气轮机
公开(公告)号：US06224327B1
公开(公告)日：2001-05-01
申请号：US09250733
申请日：1999-02-16
申请人： Sunao Aoki , Katsunori Tanaka , Kazuharu Hirokawa , Rintaro Chikami
发明人： Sunao Aoki , Katsunori Tanaka , Kazuharu Hirokawa , Rintaro Chikami
IPC分类号： F04D2958
CPC分类号： F01D5/085 , F02C7/16 , F05D2260/2322
摘要： A steam-cooling gas turbine in which cooling steam is fed from a center portion of a rotating shaft and recovered through passages disposed at the outer side of the center portion with steam leaking through a seal portion from a feeding steam being effectively recovered. Feed steam (30) serving as coolant is supplied to a cavity (27) from a inner cylinder (10) and hence fed to moving blades (11, 12) through recesses (40) formed in a coupling portion (26) interposed between a final-stage disk (24) and a turbine shaft (1), steam feeding pipes (15) and steam feeding passages (11a, 12a). After cooling of the moving blades, steam (31) is recovered through steam recovering passages (11b, 12b), steam recovering pipes (16), radial steam-recovering passages (17), axial steam-recovering passages (18) and outlet openings (5a). The coupling portion (26) is forced to hermetically close under thermal stress, whereby leakage of the feed steam (30) is prevented. Steam leaking through a seal portion constituted by stationary and rotatable seal fin assemblies (4a, 4b) can be effectively recovered. The inner cylinder (10) can move in the axial direction through cooperation of piston rings (43) and a centering piece (6) adapted for absorbing thermal stress induced in the inner cylinder (10). Upstream tip end portions of steam feeding pipes (15) and steam recovering pipes (16) are secured onto a side surface of the first-stage disk (21) through sleeves removably fitted thereto.
摘要翻译：一种蒸汽冷却燃气轮机，其中冷却蒸汽从旋转轴的中心部分进给并通过设置在中心部分的外侧的通道被回收，蒸汽通过密封部分从进料蒸汽泄漏得到有效回收。作为冷却剂的进料蒸汽（30）从内筒（10）供给到空腔（27），从而通过形成在连接部分（26）中的连接部分（26）的凹部（40）供给到活动叶片（11,12）末级盘（24）和涡轮轴（1），蒸汽供给管（15）和蒸汽供给通道（11a，12a）。在运动叶片冷却后，蒸汽（31）通过蒸汽回收通道（11b，12b），蒸汽回收管（16），径向蒸汽回收通道（17），轴向蒸汽回收通道（18）和出口（5a）。耦合部分（26）在热应力下被迫气密地闭合，从而防止进料蒸汽（30）的泄漏。可以有效地回收通过由固定和可旋转的密封翅片组件（4a，4b）构成的密封部分泄漏的蒸汽。内筒（10）可以通过活塞环（43）和适于吸收在内筒（10）中感应的热应力的定心件（6）的配合而沿轴向移动。蒸汽供给管（15）和蒸汽回收管（16）的上游末端部分通过可移除地装配在其上的套筒固定在第一级盘（21）的侧表面上。

6. 发明申请

US20120251329A1 ROTOR STRUCTURE 有权
标题翻译：转子结构
公开(公告)号：US20120251329A1
公开(公告)日：2012-10-04
申请号：US13362629
申请日：2012-01-31
申请人： Tomoyuki Hirata , Kazuharu Hirokawa , Yoshimasa Takaoka
发明人： Tomoyuki Hirata , Kazuharu Hirokawa , Yoshimasa Takaoka
IPC分类号： F01D5/30
CPC分类号： F04D29/322 , F01D5/3038 , F01D5/32
摘要： The rotor structure is provided with a rotation shaft body in which a blade groove is formed at an outer circumference part, and extends in a circumferential direction of the axis line, and a plurality of blade bodies which are arrayed in the circumferential direction at the outer circumference part of the rotation shaft body, wherein a blade fixing piece is installed so as to be a positioned between at least one set of adjacent two blade bodies in the circumferential direction inside the blade groove, a projected part is formed at where either an opening wall part or the groove opening side of the blade groove and the blade fixing piece, and a recessed part which is fitted into the projected part is formed at where the other one of them.
摘要翻译：转子结构设置有旋转轴体，其中，在外周部形成有叶片槽，沿轴线的圆周方向延伸，并且在外周沿圆周方向排列的多个叶片体旋转轴体的圆周部，其中，叶片固定片安装成位于叶片槽内的圆周方向上的至少一组相邻的两个叶片体之间，形成有突起部，叶片槽和刀片固定片的壁部分或凹槽开口侧，并且嵌入突出部分中的凹部形成在其中另一个处。

7. 发明授权

US06367242B2 Recovery type steam cooled gas turbine 有权
标题翻译：回收式蒸汽冷却燃气轮机
公开(公告)号：US06367242B2
公开(公告)日：2002-04-09
申请号：US09197604
申请日：1998-11-23
申请人： Kazuo Uematsu , Katsunori Tanaka , Kazuharu Hirokawa
发明人： Kazuo Uematsu , Katsunori Tanaka , Kazuharu Hirokawa
IPC分类号： F02C100
CPC分类号： F02C7/18 , Y02E20/16
摘要： In a recovery type steam cooled gas turbine, dew condensation is prevented when feeding steam in a starting operation of the gas turbine, and penetration of high temperature combustion gas into a steam cooling passage is prevented. Also, residual steam is removed in the stopping operation of the gas turbine. The gas turbine (1) has moving and stationary blade steam cooling passages (4a, 4b). The steam from steam cooling pipes (9, 10) flows through these passages to cool them. The steam after cooling is recovered. In the starting operation of the gas turbine, air from a compressor (2) flows through a valve (15) and a flow rate regulator (7). Also, a portion of the air is subjected to a temperature adjustment in a temperature adjuster (5) and flows through three-way valves (11, 12) to a steam cooling passage (4a, 4b) to be discharged through three-way valves (13, 14) and a flow rate regulator valve (8) to warm the passages (4a, 4b). Also, valves (15, 16) are closed and a valve (17) is opened so that outside air or inert gas from a medium feed source (6) may flow. After the warming up operation in the starting operation, the three-way valves (11 to 14) are switched to allow the steam to flow from the pipes (9, 10) to the passages (4a, 4b) to perform cooling during regular operation. Furthermore, after the stopping operation, it is possible to purge the residual steam within the passages (4a, 4b) with air.
摘要翻译：在回收式蒸汽冷却式燃气轮机中，在燃气轮机的起动动作中供给蒸汽时，能够防止结露，能够防止高温燃烧气体进入蒸汽冷却通路。此外，在燃气轮机的停止操作中除去残余蒸汽。燃气轮机（1）具有移动和静止的叶片蒸汽冷却通道（4a，4b）。来自蒸汽冷却管道（9,10）的蒸汽流过这些通道以冷却它们。回收冷却后的蒸汽。在燃气轮机的启动操作中，来自压缩机（2）的空气流经阀（15）和流量调节器（7）。另外，一部分空气在温度调节器（5）中进行温度调节，并且通过三通阀（11,12）流到蒸汽冷却通道（4a，4b），以通过三通阀（13,14）和流量调节阀（8），以加热通道（4a，4b）。此外，阀（15,16）关闭并且阀（17）打开，使得来自介质进料源（6）的外部空气或惰性气体可能流动。在起动运转中的预热运转之后，切换三通阀（11〜14），使蒸汽从管道（9,10）流向通道（4a，4b），以在正常运行中进行冷却。此外，在停止操作之后，可以用空气吹扫通道（4a，4b）内的残余蒸汽。

8. 发明授权

US06189891B1 Gas turbine seal apparatus 失效
标题翻译：燃气轮机密封装置
公开(公告)号：US06189891B1
公开(公告)日：2001-02-20
申请号：US09028664
申请日：1998-02-24
申请人： Yasuoki Tomita , Kazuharu Hirokawa , Hiroki Fukuno , Kiyoshi Suenaga , Yukihiro Hashimoto , Eisaku Ito
发明人： Yasuoki Tomita , Kazuharu Hirokawa , Hiroki Fukuno , Kiyoshi Suenaga , Yukihiro Hashimoto , Eisaku Ito
IPC分类号： F16J15447
CPC分类号： F01D11/02 , F01D11/001
摘要： A gas turbine seal structure provided between end portions of a moving blade platform and a stationary blade inside shroud. The sealing performance of the seal structure is improved by increasing the resistance to the flow of air. A seal plate (21, 31) is mounted to an end portion of a platform (2, 2′) of the moving blade (1) and a seal portion is formed by seal fins (22, 32) and a honeycomb seal (16, 17) disposed on a lower surface of an end portion (12a, 12b) of an inside shroud (12) of a stationary blade (11). Sealing air from the stationary blade (11) produces a high temperature in a cavity (14) and flows into a space (18, 19), and also air leaking from the cooling air of the moving blade (1) is able to escape into a high temperature combustion gas passage through a seal portion. However, since the seal plate has three seal fins (22, 32) that are inclined in a direction so as to oppose the air flow, air resistance is increased and the flow of air into the combustion gas passage is prevented.
摘要翻译：一种燃气轮机密封结构，其设置在活动叶片平台的端部和固定叶片内部的护罩内。通过增加对空气流动的阻力来改善密封结构的密封性能。密封板（21,31）安装在活动叶片（1）的平台（2,2'）的端部，密封部分由密封翅片（22,32）和蜂窝密封件（16）形成，17），其设置在固定叶片（11）的内侧护罩（12）的端部（12a，12b）的下表面上。来自固定叶片（11）的密封空气在空腔（14）中产生高温并流入空间（18,19），并且从活动叶片（1）的冷却空气泄漏的空气也能够逸出通过密封部分的高温燃烧气体通道。然而，由于密封板具有在与空气流相对的方向上倾斜的三个密封翅片（22,32），因此空气阻力增加，并且防止了进入燃烧气体通道的空气流。

9. 发明授权

US5971707A Gas turbine moving blade steam cooling system 失效
标题翻译：燃气轮机动叶片蒸汽冷却系统
公开(公告)号：US5971707A
公开(公告)日：1999-10-26
申请号：US109379
申请日：1998-07-02
申请人： Kazuo Uematsu , Rintaro Chikami , Yasuoki Tomita , Hiroki Fukuno , Sunao Aoki , Toshiaki Sano , Yukihiro Hashimoto , Kiyoshi Suenaga , Kazuharu Hirokawa
发明人： Kazuo Uematsu , Rintaro Chikami , Yasuoki Tomita , Hiroki Fukuno , Sunao Aoki , Toshiaki Sano , Yukihiro Hashimoto , Kiyoshi Suenaga , Kazuharu Hirokawa
IPC分类号： F01D5/18 , F01D11/00 , B65H1/14 , F01D5/08
CPC分类号： F01D5/18 , F01D11/006 , F05D2260/2322
摘要： A gas turbine moving blade steam cooling system in which leakage of steam for cooling a moving blade is prevented and thermal stress at a blade root end portion is mitigated. Each end portion of a blade root portion (3) of the moving blade (1) is projected so as to form a projection portions (4a, 4b). A steam passage 5 is provided between the projection portions (4a, 4b) and a steam supply port 5a and a steam recovery port (5b) are provided downwardly with the respect to the steam passage 5. The steam supply port (5a) connects to a steam supply passage (20) and the steam recovery port (5b) connects to a steam recovery passage (21). Steam is supplied from the steam supply port (5a) into a blade interior and is recovered through the steam recovery port (5b). Side surface seal plates (6, 7 and 8) are provided for preventing steam leakage. The steam cools the moving blade (1) and can be recovered without leakage and stress concentration due to heat at the projection portions (4a, 4b) of the blade root end portion.
摘要翻译：一种燃气轮机动叶片蒸汽冷却系统，其中防止用于冷却动叶片的蒸汽泄漏并减轻叶片根部端部处的热应力。活动叶片（1）的叶片根部（3）的每个端部突出以形成突出部分（4a，4b）。蒸汽通道5设置在突出部分（4a，4b）和蒸汽供应口5a之间，蒸汽回收口（5b）相对于蒸汽通道5向下设置。蒸汽供应口（5a）连接到蒸汽供应通道（20）和蒸汽回收口（5b）连接到蒸汽回收通道（21）。蒸汽从蒸汽供给口（5a）供给到叶片内部，并通过蒸汽回收口（5b）回收。侧面密封板（6,7和8）用于防止蒸汽泄漏。蒸汽冷却活动叶片（1），并且可以在叶片根部的突出部分（4a，4b）处由于热量而没有泄漏和应力集中而恢复。

10. 发明授权

US08607604B2 Bolt and manufacturing method of bolt 有权
标题翻译：螺栓螺栓和制造方法
公开(公告)号：US08607604B2
公开(公告)日：2013-12-17
申请号：US13178928
申请日：2011-07-08
申请人： Norikazu Tezuka , Kazuharu Hirokawa , Keisuke Ihara , Kei Osawa , Hiroshi Ishikawa , Taiji Torigoe , Ryuichi Yamamoto , Yukihiro Hashimoto , Nobuyuki Izutsu , Koji Takahashi
发明人： Norikazu Tezuka , Kazuharu Hirokawa , Keisuke Ihara , Kei Osawa , Hiroshi Ishikawa , Taiji Torigoe , Ryuichi Yamamoto , Yukihiro Hashimoto , Nobuyuki Izutsu , Koji Takahashi
IPC分类号： C21D7/06
CPC分类号： B24C1/10 , B23G9/001 , B23P9/04 , B23P15/00 , C21D9/0093 , F01D5/066 , F05D2230/311 , F05D2230/90 , F05D2260/941 , F05D2300/211 , F05D2300/2112 , F05D2300/2261 , F16B33/06 , Y10T29/479
摘要： A bolt has a male screw with a surface hardening portion that has an increased surface hardness and that is applied with a compressive residual stress. The male screw is formed by cutting the bolt, and performing a process to provide at least on the surface of the male screw of the bolt the surface hardening portion that has increased hardness and that is applied with a compressive residual stress. As a result, the fatigue resistance of the male screw is improved and the bolt is effective for use in a portion where the male screw is subject to a repetitive stress.
摘要翻译：螺栓具有具有表面硬化部分的外螺纹，其具有增加的表面硬度并且施加有压缩残余应力。通过切割螺栓形成外螺纹，并且执行至少在螺栓的外螺纹的表面上提供具有增加的硬度并施加有压缩残余应力的表面硬化部的工艺。结果，提高了外螺纹的耐疲劳性，并且螺栓对于使用阳螺纹受到重复应力的部分是有效的。

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