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    • 1. 发明专利
    • Steam turbine
    • 汽轮机
    • JP2012041822A
    • 2012-03-01
    • JP2010180971
    • 2010-08-12
    • Toshiba Corp株式会社東芝
    • OISHI TSUTOMUIWAI YASUNORISAEKI YUSHITAKAHASHI TORUTAJIMA TSUGUHISA
    • F01D25/24F01D25/00
    • PROBLEM TO BE SOLVED: To provide a steam turbine capable of reducing loss by suppressing a secondary flow in the bent tube of a crossover tube and relaxing stress concentration to suppress the reduction of mechanical strength.SOLUTION: The steam turbine includes a crossover tube 20 that guides stream discharged from an intermediate pressure turbine 11 to low pressure turbines 12a and 12b. The crossover tube 20 includes a first straight tube 21 connected to the intermediate pressure turbine 11, a second straight tube 23 connected to the first straight tube 21 via a first bent tube 22, a second bent tube 24 where an entrance is disposed away from the exit of the second straight tube 23 to be opposed to it, and a third straight tube 25 connected between the second curved tube 24 and the low pressure turbines 12a and 12b. Outer piping 26 one end of which is fixed to the outer peripheral surface of the exit side of the second straight tube 23, is disposed over the end of the third straight tube 25 with a gap to cover a part of the second straight tube 23 and the outer peripheries of the second curved tube 24 and the third straight tube 25.
    • 要解决的问题:提供一种能够通过抑制交叉管的弯曲管中的二次流并减轻应力集中来抑制机械强度的降低而能够减少损失的汽轮机。 解决方案:蒸汽轮机包括将从中压涡轮11排出的流引导到低压涡轮机12a和12b的交叉管20。 交叉管20包括连接到中压涡轮机11的第一直管21,经由第一弯管22连接到第一直管21的第二直管23,第二弯管24,其中入口远离 与其相对的第二直管23的出口以及连接在第二弯管24和低压涡轮12a和12b之间的第三直管25。 其一端固定在第二直管23的出口侧的外周面的外管26设置在第三直管25的端部上,间隙覆盖第二直管23的一部分, 第二弯管24和第三直管25的外周。版权所有(C)2012,JPO&INPIT
    • 5. 发明专利
    • Stationary blade cascade, assembling method of stationary blade cascade, and steam turbine
    • 固定式叶片,固定式叶片组装方法及蒸汽轮机
    • JP2013122221A
    • 2013-06-20
    • JP2011271545
    • 2011-12-12
    • Toshiba Corp株式会社東芝
    • TAJIMA TSUGUHISAMURAKAMI ITARUYOSHIKAWA MOTOKI
    • F01D9/04F01D11/04F01D11/10F01D25/00F01D25/24
    • F01D9/04F01D9/041F01D11/001F01D11/08F01D25/246F05D2220/31F05D2230/60Y10T29/49245
    • PROBLEM TO BE SOLVED: To provide a stationary blade cascade which is reduced in size to improve space efficiency and maintains a structure during thermal expansion irrespective of constraint caused by the deformation of a casing, and to provide an assembling method of the stationary blade cascade, and a steam turbine with the stationary blade cascade.SOLUTION: A stationary blade cascade 29 of an embodiment includes stationary blade structures 50 and a ring-shaped support structure 40 supporting the stationary blade structures 50. The stationary blade structures 50 each include: a stationary blade part 51 where steam passes; and an outer circumference side constituent part 52 formed on an outer circumference side of the stationary blade part 51 and having a fitting groove 56 which penetrates all along a circumferential direction and which has an opening 55 all along the circumferential direction in a downstream end surface 54 of the outer circumference side constituent part 52. The support structure 40 includes a ring-shaped support part 42 having a fitting portion 41 fitted in the fitting grooves 56 of the outer circumference side constituent parts 52. The plural stationary blade structures 50 are supported along the circumferential direction by the ring-shaped support part 42.
    • 要解决的问题:提供尺寸减小以提高空间效率并且在热膨胀期间保持结构的固定叶片级联,而不管壳体的变形引起的约束,并且提供静止的叶片级联的组装方法 叶片级联,以及具有固定叶片级联的蒸汽轮机。 解决方案:一个实施例的固定叶片级联29包括固定叶片结构50和支撑固定叶片结构50的环形支撑结构40.固定叶片结构50各自包括:蒸汽通过的固定叶片部分51; 以及外周侧构成部52,其形成在固定叶片部51的外周侧,并且具有沿着圆周方向贯穿全部且在下游端面54中沿着圆周方向具有开口55的嵌合槽56 支撑结构40包括环形支撑部分42,该环形支撑部分42具有装配在外周侧构成部分52的装配槽56中的装配部分41.多个固定叶片结构50沿着 圆环方向由环状支撑部分42.版权所有(C)2013,JPO&INPIT
    • 6. 发明专利
    • Axial flow turbine
    • 轴流涡轮
    • JP2011220125A
    • 2011-11-04
    • JP2010087122
    • 2010-04-05
    • Toshiba Corp株式会社東芝
    • IWAI YASUNORITAJIMA TSUGUHISANIIZEKI YOSHIKIOISHI TSUTOMUSAEKI YUSHITAKAHASHI TORU
    • F01D25/30
    • PROBLEM TO BE SOLVED: To provide an axial flow turbine capable of reducing internal losses.SOLUTION: The axial flow turbine 1 includes an outer casing 3, an inner casing 4 disposed in the outer casing 3, a rotor 5 disposed rotatably inside the outer casing 3 and the inner casing 4, and a plurality of stages 10 including a final stage 10a located at the farthest downstream side, each stage being composed of a nozzle 11 disposed on the inner casing 4 and a rotor blade arrangement 12 disposed on the rotor 5. On the downstream side of the final stage 10a, a diffuser 20 is provided, which has a guide 21 making up an outer peripheral edge and a cone 22 making up an inner peripheral edge, and guides steam having passed through the final stage 10a. The inner peripheral surface of the guide 21 of the diffuser 20 is provided with a deflecting member 24 which deflects a flow of steam having passed through a gap between the inner casing 4 and the outer peripheral end of the rotor blade arrangement 12 of the final stage 10a in the peripheral direction.
    • 要解决的问题:提供能够减少内部损耗的轴流涡轮机。 解决方案:轴流涡轮1包括外壳3,设置在外壳3中的内壳4,可旋转地设置在外壳3和内壳4内的转子5和多个台10,其包括 位于最下游侧的最后级10a,每级由设置在内壳4上的喷嘴11和设置在转子5上的转子叶片装置12组成。在最终级10a的下游侧,扩散器20 其具有构成外周边缘的引导件21和构成内周边缘的锥体22,并且引导通过最终级10a的蒸汽。 扩散器20的引导件21的内周面设置有偏转构件24,该偏转构件24使穿过内壳体4和最终级的转子叶片装置12的外周端之间的间隙的蒸汽流偏转 10a。 版权所有(C)2012,JPO&INPIT
    • 7. 发明专利
    • Axial flow turbine
    • 轴流涡轮
    • JP2009243287A
    • 2009-10-22
    • JP2008087866
    • 2008-03-28
    • Toshiba Corp株式会社東芝
    • TAJIMA TSUGUHISANOMURA DAISUKEOISHI YASUSHITAKAE SHUNSUKE
    • F01D9/02
    • PROBLEM TO BE SOLVED: To provide a high-performance and high-reliability axial flow turbine having improved turbine performance to contribute to improving the operating economical efficiency of a generation plant while preventing the flow of low energy fluid from a cavity part into a main flow portion of operating fluid and suppressing the ill effects of the cavity part on the main flow by improving the construction of an outer periphery wall ranging from the downstream side of a turbine nozzle to the upstream side of a moving blade. SOLUTION: Near the cavity part 10 and on the outer periphery wall 1a of the turbine nozzle 13 ranging from a rear edge 3a of a nozzle blade 3 to a front edge 5a of the moving blade 5, a guide part 20 is provided which is protruded on the downstream side beyond a stepped portion of the cavity part 10. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:为了提供具有改进的涡轮机性能的高性能和高可靠性轴流涡轮机,有助于提高发电厂的运行经济效率,同时防止低能流体从空腔部分流入 通过改善从涡轮喷嘴的下游侧到动叶片的上游侧的外周壁的结构,来抑制空腔部分对主流的不良影响的主流路部分。 解决方案:在喷嘴叶片3的后边缘3a到动叶片5的前边缘5a之间的空腔部分10和涡轮喷嘴13的外周壁1a上,提供引导部分20 其在下游侧突出超过空腔部分10的阶梯部分。版权所有(C)2010,JPO&INPIT
    • 9. 发明专利
    • Steam turbine, steam turbine rotor and moving blade for steam turbine
    • 蒸汽涡轮机,蒸汽涡轮转子和蒸汽涡轮机移动叶片
    • JP2011089438A
    • 2011-05-06
    • JP2009242108
    • 2009-10-21
    • Toshiba Corp株式会社東芝
    • YAMASHITA KATSUYAINOMATA ASAKOSAITO KAZUHIROWADA KUNIHIKOTAJIMA TSUGUHISAHYOMORI KATSUHIROIWAI SHOGOSUGA TAKEO
    • F01D5/30F01D5/18F01D25/12
    • PROBLEM TO BE SOLVED: To efficiently cool a part of a rotor where a moving blade is embedded in a steam turbine. SOLUTION: This steam turbine rotor 90 of the steam turbine includes a rotor body 10 forming a moving blade implanting groove 12 in a columnar shape, and a plurality of moving blades 20 engaging with the moving blade implanting groove 12. The moving blades 20 include a blade effective part 30 for flowing first steam passing through a nozzle diaphragm 60, a platform part 40 integrally connected with the blade effective part 30 and an implanting part 50 integrally formed with the platform part 40 and engaging with the moving blade implanting groove 12. The platform part 40 is formed with an eaves plate 42 extending to both sides in the axial direction and covering a rotor body outer peripheral surface 11 from the outside in the radial direction. The first steam flows outside in the radial direction of the eaves plate 42. Second steam of the lower temperature than the first steam flows inside in the radial direction of the eaves plate 42 and outside the rotor body 10. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了有效地冷却在蒸汽轮机中嵌入有动叶片的转子的一部分。 蒸汽涡轮机的该汽轮机转子90包括:转子体10,其形成圆柱状的动叶片植入槽12;以及与动叶片植入槽12啮合的多个活动叶片20.活动叶片 20包括用于使通过喷嘴隔膜60的第一蒸汽流动的叶片有效部分30,与叶片有效部分30一体地连接的平台部分40和与平台部分40一体形成的植入部分50并与移动叶片植入槽 平台部40形成有沿轴向延伸到两侧的檐板42,并且在径向方向上从外侧覆盖转子体外周面11。 第一蒸汽在檐板42的径向外侧流动。比第一蒸汽低的温度的第二蒸汽在檐板42的径向方向和转子体10的外侧在内部流动。版权所有(C) )2011,JPO&INPIT
    • 10. 发明专利
    • Steam turbine and stationary part sealing structure thereof
    • 蒸汽涡轮机及其部件密封结构
    • JP2010285924A
    • 2010-12-24
    • JP2009139946
    • 2009-06-11
    • Toshiba Corp株式会社東芝
    • TAKAE SHUNSUKEONO MUNEHISAOISHI YASUSHITAJIMA TSUGUHISAYOSHIKAWA MOTOKI
    • F01D25/24F01D11/00F01D25/00F16J15/24F16J15/48
    • PROBLEM TO BE SOLVED: To improve efficiency by inhibiting steam leak of a seal part between stationary parts partitioning spaces in which pressures are different in a steam turbine. SOLUTION: This steam turbine includes a first and a second stationary member 101, 102 which are not mutually fixed and which form a first, a second and a third space 13, 14, 15 in which pressure are different, a first seal part 21 partitioning the first and the second space 13, 14, and a second seal part 22 partitioning the second and the third space. The first seal part 21 is composed to be sealed by pressing the first and the second stationary member 101, 102 against each other by force pressing the same against each other by pressure difference in the first and the second space 13, 14. A seal member 30 is disposed in a gap where the first and the second stationary member 101, 102 are adjacent to each other in the second seal part 22. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:通过抑制蒸汽涡轮机中的压力不同的固定部分分隔空间之间的密封部分的蒸汽泄漏来提高效率。 解决方案:该汽轮机包括第一固定件101和第二固定件102,它们不相互固定并形成压力不同的第一,第二和第三空间13,14,15,第一密封件 分隔第一和第二空间13,14的部分21和分隔第二和第三空间的第二密封部分22。 第一密封部分21通过在第一和第二空间13,14中的压力差通过相互压迫第一和第二固定构件101,102而彼此相对地被密封。密封构件 30设置在第二密封部分22中第一和第二固定构件101,102彼此相邻的间隙中。版权所有:(C)2011,JPO&INPIT