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公开(公告)号：US06578363B2
公开(公告)日：2003-06-17
申请号：US10072865
申请日：2002-02-12
IPC分类号： F02C712
摘要： Cooling air passages are formed in the wall of an exhaust casing connected to a turbine casing of a gas turbine. Low pressure air extracted from the low pressure stage of an air compressor of the gas turbine is supplied to the cooling air passage from the portion near the downstream end of the exhaust casing. Cooling air flows through the cooling air passage toward the upstream end of the exhaust casing and then flows into an annular cavity formed in the turbine casing near the portion corresponding to the last turbine stage. Therefore, the metal temperature of the exhaust casing near the upstream end (near the joint between the exhaust casing and the turbine casing) is lowered by the cooling air and, as cooling air of a relatively high temperature is supplied to the cavity in the turbine casing, the metal temperature of the turbine casing near the downstream end becomes higher than that provided by a conventional cooling system. Therefore, the difference between the metal temperatures of the turbine casing and the exhaust casing becomes very small and the thermal stress exerted on the exhaust casing due to the temperature difference can be largely reduced.
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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
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。
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公开(公告)号：US06662568B2
公开(公告)日：2003-12-16
申请号：US10378602
申请日：2003-03-05
申请人： Hiroshi Shimizu , Mitsuru Kondo , Hironobu Hakoda , Yukihiro Hashimoto , Katsunori Tanaka , Sousuke Nakamura
发明人： Hiroshi Shimizu , Mitsuru Kondo , Hironobu Hakoda , Yukihiro Hashimoto , Katsunori Tanaka , Sousuke Nakamura
IPC分类号： F02C720
CPC分类号： F01D9/023 , F05D2260/94 , F05D2260/941 , F05D2300/50212 , F16B2200/50 , F16L23/00 , F16L23/24 , F23R2900/00005
摘要： The present invention provides a hollow structure with at least one flange which can eliminate the possibility of creating crackings due to the thermal fatigue, thereby improving the durability thereof. A hollow structure with an flange according to the present invention includes at least one annular flange fixedly attached around the hollow structure which has a temperature gradient in the direction of the thickness of the wall thereof, wherein said at least one annular flange including an outer portion formed of a metal material having a coefficient of linear expansion greater than that of the metal material forming another portion of said at least one annular flange.
摘要翻译： 本发明提供具有至少一个凸缘的中空结构，其可以消除由于热疲劳而产生裂纹的可能性，从而提高其耐久性。 根据本发明的具有凸缘的中空结构包括至少一个环形凸缘，该环形凸缘固定地附接在中空结构周围，该环形凸缘具有在其壁厚方向上的温度梯度，其中所述至少一个环形凸缘包括外部部分 由具有大于形成所述至少一个环形凸缘的另一部分的金属材料的线性膨胀系数的金属材料形成。
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公开(公告)号：US20110268533A1
公开(公告)日：2011-11-03
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
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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公开(公告)号：US06196798B1
公开(公告)日：2001-03-06
申请号：US09242330
申请日：1999-02-11
IPC分类号： F01D518
摘要： A number of air-transpiration holes (4) are provided at a leading edge portion (2) of a cooled blade (1). Cooling air flowing through a cooling air passage (15) formed inside of the blade blows out to the blade surface of the leading edge portion (2) of the cooled blade (1) by way of the air-transpiration holes (4), to thereby shower-head cool the surface of the leading edge portion (2). The air-transpiration holes (4) are formed so as to extend substantially orthogonal to the leading edge surface of the cooled blade (1) such that the acute-angled portions are eliminated, whereby thermal stress is reduced and cracking is prevented.
摘要翻译： 在冷却叶片（1）的前缘部分（2）处设置有多个空气蒸发孔（4）。 流过形成在叶片内的冷却风道（15）的冷却空气通过空气蒸发孔（4）吹向冷却叶片（1）的前缘部（2）的叶片表面，至 从而喷淋头对前缘部分（2）的表面进行冷却。 空气蒸发孔（4）形成为基本上垂直于冷却叶片（1）的前缘表面延伸，使得锐角部分被消除，从而减少热应力并防止开裂。
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公开(公告)号：US6151881A
公开(公告)日：2000-11-28
申请号：US242293
申请日：1999-02-11
摘要： An air separator for a gas turbine, in which cracks are prevented from occurring at a flange portion of the air separator due to fretting fatigue. The air separator (20) has a cylindrical split structure formed by two separator members (20-1 and 20-2), of which one of the separators (20-1) is mounted on a rotor (1) whereas the other separator member (20-2) is mounted on a disc portion (7) on a side of a moving blade (2) by bolts (28) extending through bolt holes (23) formed in a flange portion (22). Cooling air from a compressor enters a space (6) from a duct (5) and passes to a passage (32) from a clearance (33) so that it is fed to air feed holes (43) and radial holes (44) of the disc portion (7). Alternatively, air holes (50) are provided in the flange portion (22) in the form of circumferential slots for covering a plurality of radial holes to feed the cooling air homogeneously so that a prior art air separator of an existing plant can be replaced.
摘要翻译： PCT No.PCT / JP98 / 02688 Sec。 371日期1999年2月11日 102（e）1999年2月11日PCT PCT。1998年6月18日PCT公布。 公开号WO98 / 59156 日期：1998年12月30日在燃气轮机的空气分离器中，由于微动疲劳，防止在空气分离器的凸缘部发生裂纹。 空气分离器（20）具有由两个分离器构件（20-1和20-2）形成的圆柱形分离结构，其中一个分离器（20-1）安装在转子（1）上，而另一个分隔件 （20-2）通过延伸穿过形成在凸缘部分（22）中的螺栓孔（23）的螺栓（28）安装在活动叶片（2）侧上的盘部分（7）上。 来自压缩机的冷却空气从管道（5）进入空间（6）并从间隙（33）传递到通道（32），从而将其供给到空气供给孔（43）和径向孔 盘部（7）。 或者，空气孔（50）以周向槽的形式设置在凸缘部分（22）中，用于覆盖多个径向孔，以均匀地供给冷却空气，使得可以更换现有设备的现有技术的空气分离器。
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公开(公告)号：US09234440B2
公开(公告)日：2016-01-12
申请号：US13383637
申请日：2010-09-09
IPC分类号： F01D25/24
CPC分类号： F01D25/243 , F05D2240/55 , F05D2260/941
摘要： A structure for a gas turbine casing, capable of preventing gas from leaking when the structure is subjected to pressure. A structure for a gas turbine casing, divided by a horizontal plane at flange sections into two halves comprising an upper-half casing (10) and a lower-half casing (11). The structure is provided with bolts (12) which are disposed in the inner surfaces of the upper-half casing (10) and the lower-half casing (11) so as to bridge therebetween, upper nuts (13) which are disposed in the inner surface of the upper-half casing (10) and attached to the bolts (12), and lower nuts (14) which are disposed in the inner surface of the lower-half casing (11) and attached to the bolts (12).
摘要翻译： 一种用于燃气轮机壳体的结构，能够防止当结构受到压力时气体泄漏。 一种用于燃气涡轮机壳体的结构，其由凸缘部分处的水平面划分为包括上半壳体（10）和下半壳体（11）的两半。 该结构设置有螺栓（12），其设置在上半壳体（10）和下半壳体（11）的内表面中以便在其之间桥接，上螺母（13）设置在 上半壳体（10）的内表面并附接到螺栓（12），下螺母（14）设置在下半壳体（11）的内表面中并附接到螺栓（12）上， 。
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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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9.发明授权公开(公告)号：US06261058B1
公开(公告)日：2001-07-17
申请号：US09414394
申请日：1999-10-07
IPC分类号： F01D900
CPC分类号： F01D9/042 , F01D5/288 , F01D9/041 , F05D2230/00 , F05D2230/90 , F05D2240/12 , F05D2260/30 , F05D2300/611
摘要： The present invention provides a stationary blade of integrated segment construction, in which a thermal barrier coating can be applied to the whole blade surface and excessive stress can be avoided in a shroud. A plate seat connector is provided at each end face portion of an inside shroud and an outside shroud attached to outside and inside ends of gas turbine stationary blade. Several stationary blades are integrated by joining the plate seat connectors of the adjacent shrouds by means of bolts and nuts to provide a stationary blade of integrated segment construction.
摘要翻译： 本发明提供了一种集成节段结构的固定叶片，其中可以对整个叶片表面施加热障涂层，并且可以避免在护罩中产生过大的应力。 在内侧护罩的每个端面部分设置有板座连接器，以及安装在燃气轮机静止叶片的外部和内部端部的外部护罩。 通过用螺栓和螺母连接相邻护罩的板座连接器来集成几个固定刀片，以提供一体化段结构的固定刀片。
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公开(公告)号：US5947687A
公开(公告)日：1999-09-07
申请号：US862135
申请日：1997-05-22
申请人： Masahiko Mori , Yukihiro Hashimoto , Hiroji Tada , Ichiro Fukue , Keizo Tsukagoshi , Jyunichiro Masada
发明人： Masahiko Mori , Yukihiro Hashimoto , Hiroji Tada , Ichiro Fukue , Keizo Tsukagoshi , Jyunichiro Masada
CPC分类号： F01D5/147 , F05D2260/94 , F05D2260/941 , Y02T50/671
摘要： A movable gas turbine blade includes a platform (10) which is provided with a groove (15). The groove is located on a blade trailing side of the platform. Also, the groove is rounded and has a depth which does not enter a stress line of the platform caused by a load on the blade. The groove functions to suppress a high thermal stress arising at a connection portion of a blade trailing edge and the platform of the gas turbine air cooled moving blade during unsteady (start and stop) operation of the turbine.
摘要翻译： 可移动燃气轮机叶片包括具有凹槽（15）的平台（10）。 凹槽位于平台的叶片后侧。 此外，凹槽是圆形的并且具有不会由叶片上的载荷引起的平台的压力线的深度。 该凹槽用于在涡轮的不稳定（启动和停止）操作期间抑制在叶片后缘的连接部分和燃气轮机空气冷却的动叶片的平台处产生的高热应力。
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