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11. 发明专利

JPH11336503A STEAM TURBINE STATOR BLADE 失效
公开(公告)号：JPH11336503A
公开(公告)日：1999-12-07
申请号：JP14594098
申请日：1998-05-27
申请人： MITSUBISHI HEAVY IND LTD
发明人： KONISHI SATORU , UMAGOE RYUTARO , TODA HIDEYUKI , MATSUO TAKAAKI , WATANABE EIICHIRO
IPC分类号： F01D9/02 , F01D25/32
摘要： PROBLEM TO BE SOLVED: To provide a hollow stator blade made by precision casting for use in the final stage of a steam turbine, with which the drain retrieving efficiency is enhanced. SOLUTION: In a stator blade 1, cavities 4 and 5 penetrating from the outer shroud 2 to inner shroud 3 are independently provided in such a way as partitioned by a rib 6. On the belly side of the blade obverse surface, a plurality of belly side slits 10-20 are parallel provided linearly at a certain spacing. Also on the back side, back side slits 21-26 are provided linearly at a certain spacing. The drain on the blade obverse surface intrudes into the independent cavities 4 and 5 from the belly side slits 10-20 and back side slits 21-26 and flows out from the outer shroud 2 or inner shroud 3 as shown by 40-43 to be retrieved. According to this configuration in which partitioning is made by rib 6 into two cavities, counterflowing to outside can be precluded, different from a conventional arrangement equipped with a single cavity.

12. 发明专利

JPH1193616A LOW PRESSURE STEAM TURBINE INNER CASING SUPPORTING STRUCTURE 失效
公开(公告)号：JPH1193616A
公开(公告)日：1999-04-06
申请号：JP25209697
申请日：1997-09-17
申请人： MITSUBISHI HEAVY IND LTD
发明人： UMAGOE RYUTARO
IPC分类号： F01D25/24 , F01D25/26 , F01D25/28
摘要： PROBLEM TO BE SOLVED: To prevent an inner casing from sinking so as to prevent contact with a rotary part by directly forming a supporting point of the inner casing on a foundation part, in a low pressure steam turbine inner casing supporting structure. SOLUTION: A horizontal reinforcing plate 23 is fixed around a casing foundation part 20, a pedestal box 24 is fixed on the horizontal reinforcing plate 23, and two outer casing supporting parts 25 are arranged on both axial sides. Two inner casing supporting plates 11 whose one end is fixed to the inner casing extend in an outer casing supporting part 25, its tip end part is supported by an upper supporting rib 12 which is fixed on the horizontal reinforcing plate 23 by a lower supporting rib 13. Four supporting points of the inner casing are arranged on a lower concrete made foundation through upper and lower base materials 12, 13 and the horizontal reinforcing plate 23 so as to prevent contact with a rotary part caused by slinking of the inner casing.

13. 发明专利

JPH1193614A BLADE RING STEAM CHEST IN LOW PRESSURE TURBINE INNER CASING 失效
公开(公告)号：JPH1193614A
公开(公告)日：1999-04-06
申请号：JP25671197
申请日：1997-09-22
申请人： MITSUBISHI HEAVY IND LTD
发明人： UMAGOE RYUTARO
IPC分类号： F01D25/24
摘要： PROBLEM TO BE SOLVED: To suppress an influence between both end positions of partitions for partitioning a steam chest or a temperature difference between partitions, and form the steam chest stably, in a blade ring steam chest formed in an inner casing of a low pressure steam turbine. SOLUTION: A first diaphragm 21 is flexibly supported between a double blade ring 20 and a blade ring 4, and a second diaphragm 22 is flexibly supported between the bade 20 and the inner casing 2 so as to form a blade ring steam chest 10 is partitioned by the double blade ring 20 arranged between the blade ring 4 for supporting a stationary blade 5 of a low pressure steam turbine and the inner casing 2. In the case where a temperature difference is generated between an inner side and an outer side of a radial direction of the blade ring steam chest 10, heat deformation amount is shared by the first and the second diaphragms 21, 22 so as to provide a flexible structure of the double blade ring 20 for connecting the diaphragms 21, 22 to each other. It is thus possible to suppress the influence of the temperature difference between the inner and outer side of the radial direction of the blade ring steam chest 10 in a low level stably, and it is also possible to improve safety and reliability.

14. 发明专利

JPH1193613A STEAM TURBINE FOR CONNECTING A PLURALITY OF CASINGS 失效
公开(公告)号：JPH1193613A
公开(公告)日：1999-04-06
申请号：JP25209597
申请日：1997-09-17
申请人： MITSUBISHI HEAVY IND LTD
发明人： UMAGOE RYUTARO
IPC分类号： F01D5/06 , F01D25/16 , F01D25/24
摘要： PROBLEM TO BE SOLVED: To form a pedestal box in a compact size, and shorten the length of a rotor, in a steam turbine for connecting a plurality of casings to each other. SOLUTION: Low pressure steam turbines 2-1, 2-2 are connected to each other through a rotor 6, and the circumference of casings 5-1, 5-2 is supported by a horizontal reinforcing plate 24 formed with an integrated structure. A pedestal box 20 is arranged on a rotor connecting part formed between the casings 5-1, 5-2 by covering a bearing 21. The horizontal reinforcing plate 24 is fastened to a casing foundation part at connecting parts 22, 23 at the time of installation by means of vis, and thereby, the horizontal reinforcing plate 24 is installed easily. Since both casings 5-1, 5-2 are commonly held between both casings 5-1, 5-2 by the horizontal reinforcing plate 24, so that the pedestal box 20 is possible to reduce the length of an axial direction shorter than that of a prior individual reinforcing plate. Bearing of 21 pieces are sufficient, and it is possible to form the device in a compact size.

15. 发明专利

JPH0814011A STEAM TURBINE PLANT 失效
公开(公告)号：JPH0814011A
公开(公告)日：1996-01-16
申请号：JP14284394
申请日：1994-06-24
申请人： MITSUBISHI HEAVY IND LTD
发明人： UMAGOE RYUTARO , KAMIYOSHI HIROSHI
IPC分类号： F01D25/28 , F01K13/00
摘要： PURPOSE:To strengthen the supporting rigidity of a casing having a pedestal structure to lower responsive sensitivity to shaft vibration and the shaft vibration too. CONSTITUTION:In pedestal structure in a steam turbine such as nuclear or thermal power plants, etc., the supporting ridigity of pedestal parts 4C and 4D can be strengtheded by setting reinforcing plates 1 and 1 over a shaft direction to be fitted relative to both sides to rotors 11A and 11B with the reinforcing plates 1 and 1 made parallel to a shaft center between two outer casing 4A and 4B installed adjoiningly with each other.

16. 发明专利

JPH07208107A REACTION TYPE STEAM TURBINE 失效
公开(公告)号：JPH07208107A
公开(公告)日：1995-08-08
申请号：JP1584894
申请日：1994-01-14
申请人： MITSUBISHI HEAVY IND LTD
发明人： UMAGOE RYUTARO , HORI SHINICHI , NAKANO TAKASHI , TARUYA YOSHIHIRO
IPC分类号： F01D9/04
摘要： PURPOSE:To reduce the weight of a reaction type steam turbine, and also improve its inside efficiency. CONSTITUTION:The stationary blade 22 of a reaction step is formed integratedly with a partition plate 23 which is divided into two parts on a center surface, and also the center surface of the partition plate 23 is maintained to the outer part casing 1 and an inner part casing of a steam turbine. The blade train of a reaction step is constituted so as to set a reaction degree to 35 to 42 % at the time of constant operation of the steam turbine.

17. 发明专利

JPH06159009A STEAM TURBINE CASING 失效
公开(公告)号：JPH06159009A
公开(公告)日：1994-06-07
申请号：JP31841992
申请日：1992-11-27
申请人： MITSUBISHI HEAVY IND LTD
发明人： TSUKUDA KAZUO , UMAGOE RYUTARO , NAKANO TAKASHI , KOBAYASHI TORU
IPC分类号： F01D25/12 , F01D25/24
摘要： PURPOSE:To prevent a leakage of steam owing to the temperature rise of a bolt prior to a casing in the starting, or a generation of a stress corrosion cutting of the bolt owing to a long period of operation, in the horizontal flanges of a steam turbine high or medium pressure casing. CONSTITUTION:Steam passages 17A and 17B are provided near the inner walls of horizontal flanges 2A and 2B, so as to cool the horizontal flanges 2A and 2b by letting flow a steam of a relatively low temperature to the steam passages 17A and 17B.

18. 发明专利

JPS61291703A STEAM TURBINE 失效
公开(公告)号：JPS61291703A
公开(公告)日：1986-12-22
申请号：JP12997485
申请日：1985-06-17
申请人： MITSUBISHI HEAVY IND LTD
发明人： UMAGOE RYUTARO
IPC分类号： F01D11/08
摘要： PURPOSE:To prevent a rotary part from making contact with a seal strip by mounting a heater on a vane ring which has fixed vanes embedded into the internal peripheral face thereof. CONSTITUTION:Fixed blades 23 are embedded into the internal peripheral face of a vane ring 24, opposing to a turbine shaft 21. A seal strip is mounted on the internal peripheral face of the vane ring 24, opposing to a rotary vane 22. An electric wire 25 is wound around the vane ring 24, forming a heater 27. When a steam turbine is started, interrupted and varied in load, the vane ring 24 is heated. The rotary part may therefore be prevented from making contact with the seal strip.

19. 发明专利

JP2009063000A Structure for attaching spindle bolt of compressor 有权
标题翻译：连接压缩机主轴螺栓的结构
公开(公告)号：JP2009063000A
公开(公告)日：2009-03-26
申请号：JP2008323189
申请日：2008-12-19
申请人： Mitsubishi Heavy Ind Ltd , 三菱重工業株式会社
发明人： UMAGOE RYUTARO , ICHIYANAGI TAKU
IPC分类号： F04D29/32 , F04D19/02
摘要： PROBLEM TO BE SOLVED: To prevent a flexural deformation of a rotor disk during operation to improve the fatigue strength of a structure for attaching a spindle bolt of a gas turbine compressor.
SOLUTION: A number of disks 82 are arranged between a front shaft-end part 2 and a rear shaft-end part 4 in the axial direction making torque arms come into contact with each other, and are tightened by means of a spindle bolt 1 and a nut 3. The disks 10, 11 corresponding to two stages are integrally formed at a rear side of the front shaft-end part 2 so as to have a recess 13 between two disks. Such a structure enables prevention of a disk-like deformation of the disks 10, 11 and also the improved stiffness of the attachment structure at both ends of the spindle bolt 1. Consequently, a flexural deformation of the bolt 1 during rotation is prevented, and its fatigue strength is enhanced.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了防止在操作期间转子盘的弯曲变形，以提高用于安装燃气轮机压缩机的主轴螺栓的结构的疲劳强度。解决方案：在轴向方向上在前轴端部件2和后轴端部件4之间布置有多个盘82，使得扭矩臂彼此接触，并且通过主轴螺栓1和螺母3.对应于两级的盘10,11一体地形成在前轴端部2的后侧，以便在两个盘之间具有凹部13。这样的结构能够防止盘10,11的盘状变形以及主轴螺栓1的两端处的附接结构的刚性提高。因此，防止螺栓1在旋转期间的弯曲变形，并且其疲劳强度提高。版权所有（C）2009，JPO＆INPIT

20. 发明专利

JP2004150395A Steam turbine diaphragm and steam turbine 有权
公开(公告)号：JP2004150395A
公开(公告)日：2004-05-27
申请号：JP2002318671
申请日：2002-10-31
申请人： Mitsubishi Heavy Ind Ltd , 三菱重工業株式会社
发明人： UMAGOE RYUTARO , TANAKA KEIZO , SHIRAI HIROKAZU , WAKI YUUICHIRO
IPC分类号： F01D9/04 , F01D9/02 , F01D25/24
摘要： PROBLEM TO BE SOLVED: To provide a steam turbine diaphragm that is adapted to suppress an end effect. SOLUTION: Fig.1 is a front view and a side view illustrating a steam turbine diaphragms. The steam turbine diaphragms are combined with a simple fit between an outer ring 1 and a stationary blade 2, and between the stationary blade 2 and an inner ring 3. A plurality of stationary blades 2s are aligned in circumferential direction in the vicinity of a mating face 4 between inner ring pieces 3a, 3b one another. A bolt 5 is adopted as a means for joining the stationary blades 2s, and an example is shown for penetrating and joining the stationary blades 2s. The area where the bolt 5 is made to penetrate is at a root of the inner ring side, and how many pieces of the stationary blades 2s are made to penetrate is determined according to load changes caused by the end effect. When an appropriate number of pieces of the stationary blades 2s are joined by the bolt 5 at the root of the inner ring side, the plurality of stationary blades 2s aligned near a mating face 4 come to be able to withstand jointly the loads transmitted to the stationary blades 2s. COPYRIGHT: (C)2004,JPO

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