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1. 发明专利

JPS62157210A STEAM TURBINE 失效
公开(公告)号：JPS62157210A
公开(公告)日：1987-07-13
申请号：JP29343185
申请日：1985-12-28
申请人： TOSHIBA CORP
发明人： HARADA TOSHIYUKI
IPC分类号： F01D25/12 , F01D5/08
摘要： PURPOSE:To cool securely high-temperature stages by controlling the opening of a cooling steam control valve, which is provided in the cooling steam leading pipe for a counterflow type reheat turbine, in response to the load at the time of low load operation. CONSTITUTION:In a counterflow type reheat turbine in which a high-pressure turbine 16 and an intermediate-pressure turbine 17 are enclosed in one casing, a cooling steam control valve 22 is provided in the midway of a cooling steam extraction pipe 21 connecting a cooling steam extraction port 20 of the high- pressure turbine 16 and the intermediate-pressure turbine 17. Further, a load detector 24 is provided to a generator 19, and a function generator 25 is provided between the load detector 24 and the control valve 22. And when the load decreases below a prescribed value, the control valve 22 is opened by the signal of the function generator 25 in response to the load to cool the embedded parts of high-temperature stage blades and the root part of the rotor of the turbine.

2. 发明专利

JPS61152907A SEAL PART GAP REGULATING DEVICE FOR TURBINE 失效
公开(公告)号：JPS61152907A
公开(公告)日：1986-07-11
申请号：JP27360884
申请日：1984-12-27
申请人： TOSHIBA CORP
发明人： KANEKO JOJI , KIKUCHI MASATAKA , MURAKAMI TORU , FUJIWARA TOSHIHIRO , FUJII MICHINOBU , HARADA TOSHIYUKI
IPC分类号： F01D11/08 , F01D11/22
摘要： PURPOSE:To prevent the occurrence of a contact trouble between a rotary part and a stator part, by a method wherein a bellows is located between a turbine stator part and a fin segment for seal, and a pressure in the bellows is regulated by a 4-way valve. CONSTITUTION:A projection is provided on a fin segment 4 from which seal fins 5, positioned facing a turbine moving blade 2, are projected. The projection is engaged loosely with a mounting groove 12 formed in a nozzle outer ring 3, and is radially movable. A bellows 13 is secured to the upper surface of the fin segment 4. An outlet part 15 of the bellows 13 is threadedly secured to a conduit 11, and the conduit is connected to a 4-way valve 17 to regulate a pressure in the bellows 13. This enables prevention of the occurrence of a contact trouble between a rotary part and a stator part even under a transient operation state.

3. 发明专利

JPS61132706A Ajuster for clearance at sealing area of turbine 失效
标题翻译：用于密封涡轮机区域的空气
公开(公告)号：JPS61132706A
公开(公告)日：1986-06-20
申请号：JP25325884
申请日：1984-11-30
申请人： Toshiba Corp
发明人： MURAKAMI TORU , KANEKO JOJI , KIKUCHI MASATAKA , FUJIWARA TOSHIHIRO , FUJII MICHINOBU , HARADA TOSHIYUKI
IPC分类号： F01D11/06 , F01D11/02 , F01D11/10 , F01D11/22 , F01D25/00 , F01D25/24
CPC分类号： F01D11/025 , F01D11/22
摘要： PURPOSE:To adjust a clearance at a sealing area simply by fitting sealing fin segments to stationary parts via bellows, and introducing high pressure or low pressure into the bellows. CONSTITUTION:Bellows 11, 11a are interposed and mounted between sealing segments 8, 8a and stationary parts 3, 4 respectively, so as to be movable in radial direction. Insides of bellows 11, 11a are communicated to both high pressure section and low press section of a turbine via a regulator valve 14 and a switching valve 16 respectively so that both high pressure and low pressure way be introduced therein. Thus, a clearance at a sealing area can be adjusted simply.
摘要翻译：目的：通过波纹管将密封翅片片段固定在固定部件上，并将高压或低压引入波纹管，以便在密封区域调整间隙。构成：波纹管11,11a分别插入并安装在密封段8,8a和固定部分3,4之间，以便可沿径向移动。波纹管11,11a的内部经由调节阀14和切换阀16分别与涡轮机的高压部分和低压部分连通，以便将高压和低压方式引入其中。因此，可以简单地调整密封区域的间隙。

4. 发明专利

JPH0719005A LABYRINTH SEAL DEVICE 失效
公开(公告)号：JPH0719005A
公开(公告)日：1995-01-20
申请号：JP16239693
申请日：1993-06-30
申请人： TOSHIBA CORP
发明人： HISA SHIYOUICHI , HARADA TOSHIYUKI
IPC分类号： F01D11/02 , F01D11/04
摘要： PURPOSE:To prevent self-excited oscillation by providing communication between fins of first line and second line located upstream from a stationary part outside range by means of a plurality of transmission holes degined to have a prescribed angle to the tangential line of a rotor, forcing bleed steam to pass through the transmission holes, and making bleed steam to flow-in between the fins in the direction opposite to turning flow around the rotor. CONSTITUTION:Seal fins 21 are implanted along a seal ring 22, and the top ends thereof are extended toward a rotor 1. A chamber 24 formed between the first line and the second line of the seal fin 21 and the outer side range of the seal ring 22 are communicated with each other through at least four transmission holes 25. Turning flow shown by an arrow W is generated in the chamber 24 by means of rotation of the rotor 1 in T direction, but when bleed steam bled in the outside range of the seal ring 22 is passed through transmission holes 25 and then it flows in direction shown by an arrow Wb, turning flow in the direction shown by the arrow W collides with the abovementioned flow, and moving component in rotational direction is lost so as to form pressure distribution in which only pressure downward in vertical direction makes it action. Therefore, excited oscillation force in a turbine shaft system is not added so as to stabilize an axial system.

5. 发明专利

JPH0278703A STEAM TURBINE 失效
公开(公告)号：JPH0278703A
公开(公告)日：1990-03-19
申请号：JP22751188
申请日：1988-09-13
申请人： TOSHIBA CORP
发明人： HARADA TOSHIYUKI
IPC分类号： F01D9/02
摘要： PURPOSE:To improve the performance of a steam turbine while ensuring the stability of a turbine shaft by selecting the start point of a partial feeding nozzle on each stage such that a steam force acting on each stage is applied downward to a turbine shaft bearing. CONSTITUTION:In a turbine shaft 1 are planted a first governor stage blade 2 and second to fourth governor stage blades 3-5 on the subsequent governor stages. At the fixed side of a casing 6 for journalling the turbine shaft 1 are provided respectively first to fifth governor stage nozzles 7-10 opposed to the respective governor stage blades 2-5. Then, the position of start point 8t of the second governor stage nozzle 8 is selected at the right side as viewed from the front of the turbine shaft 1 so that a governor stage valve force F1, dead weight F2 of a rotor and the resultant force of second to fourth governor stage steam forces F3, F4, F5 are directed downward.

6. 发明专利

JPS6275001A SEAL CLEARANCE ADJUSTING DEVICE FOR TURBINE 失效
公开(公告)号：JPS6275001A
公开(公告)日：1987-04-06
申请号：JP21307285
申请日：1985-09-26
申请人： TOSHIBA CORP
发明人： HARADA TOSHIYUKI
IPC分类号： F01D11/08
摘要： PURPOSE:To reduce the leakage from a seal part clearance by measuring the clearance value and moving a fin-segment in the radial direction, based on the clearance value. CONSTITUTION:An arc-shaped fin-segment 8 is attached to an installation groove 6 of a nozzle outer ring 3. A seal fin 7, which extends toward the peripheral direction, is installed in a projected manner at the inner surface of the fin- segment 8. In addition, a bellows 11 is interposed between the inner surface of the installation groove 6 and the fin-segment 8. A conduit 12 for the working fluid is connected to the bellows 11, while a valve 14 is provided to the conduit 12. The clearance at the seal part is measured by using an electromagnetic gap sensor, and based on this clearance value the valve 14 is controlled, thereby moving the fin-segment in the radial direction. With this contrivance, the clearance can be adjusted so as to reduce the leakage.

7. 发明专利

JPS61167106A STEAM TURBINE 失效
公开(公告)号：JPS61167106A
公开(公告)日：1986-07-28
申请号：JP29601785
申请日：1985-12-27
申请人： TOSHIBA CORP
发明人： HARADA TOSHIYUKI
IPC分类号： F01D25/12 , F01K7/24
摘要： PURPOSE:To keep the temperature of the high temperature stage of a reheat turbine within an allowable limit by providing two cooling steam outlet ports at different stages of a high pressure turbine, and introducing the steam extracted from the upstream side stage into the reheat turbine as cooling steam in a low load region. CONSTITUTION:When the load decreases below a prescribed value, a cooling steam control valve 31a closes fully and 31b opens in response to the signals from function generators 34a and 34b. Thus, cooling steam extracted from a steam outlet port 30b is introduced into an introducing pipe 9, and is mixed with a part of reheat steam in the mixing chamber of a reheat turbine. The steam outlet port 30b is provided on the upstream side stage of 30a and, since the steam pressure is higher than that from the steam outlet port 30a, the flow rate of reheat steam flowing into the mixing chamber is suppressed. Accordingly, the temperature of cooling steam flowing from the mixing chamber is kept within a proper range, and the rotor, nozzle diaphragm an the embedded part of blades at the high temperature stage of a reheat turbine are cooled to a proper temperature.

8. 发明专利

JPS61152906A SEAL PART GAP REGULATING DEVICE FOR TURBINE 失效
公开(公告)号：JPS61152906A
公开(公告)日：1986-07-11
申请号：JP27360784
申请日：1984-12-27
申请人： TOSHIBA CORP
发明人： KIKUCHI MASATAKA , KANEKO JOJI , MURAKAMI TORU , FUJIWARA TOSHIHIRO , FUJII MICHINOBU , HARADA TOSHIYUKI
IPC分类号： F01D11/08
摘要： PURPOSE:To prevent the occurrence of a contact trouble of a rotary part with a stationary part, by a method wherein the projection of a fin segment for seal is engaged in play with the recessed groove of the stationary part, and an elastic spring is located therebetween. CONSTITUTION:A projection 10 is formed on a fin segment 11 from which seal fins 7, positioned facing a moving blade 2, are protruded. The projection 10 is engaged loosely with a recessed groove 9 formed in a nozzle outer wheel 3. An elastic spring 12 is located in the loosely engaged part. This enables prevention of a contact trouble of a rotary part with a stationary part under a transient operation state.

9. 发明专利

JPH0953410A NOZZLE DIAPHRAGM 失效
公开(公告)号：JPH0953410A
公开(公告)日：1997-02-25
申请号：JP20864095
申请日：1995-08-16
申请人： TOSHIBA CORP , TOSHIBA ITEC KK
发明人： HARADA TOSHIYUKI , SUENAGA SATOSHI
IPC分类号： F01D9/04
摘要： PROBLEM TO BE SOLVED: To provide a nozzle diaphragm having little weld deformation quantity at the time of manufacture, capable of keeping the number of machining positions to the minimum for obtaining the finished shape, and having high accuracy. SOLUTION: A cascade segment is constituted of nozzle blades 13, an outer ring inner peripheral wall 11a, and an inner ring outer peripheral wall 12a. The cascade segment is manufactured by precision casting, electrical discharge machining, or electrochemical machining. The outer ring inner peripheral wall 11a and a diaphragm outer ring 11 are integrally welded, the inner ring outer peripheral wall 12a and a diaphragm inner ring 12 are integrally welded via an electronic beam respectively, and the cascade segments are continuously assembled in the peripheral direction to form a circular cascade.

10. 发明专利

JPH08232604A EROSION PREVENTING DEVICE FOR STEAM TURBINE 失效
公开(公告)号：JPH08232604A
公开(公告)日：1996-09-10
申请号：JP3884695
申请日：1995-02-27
申请人： TOSHIBA CORP
发明人： OTOMO MOTOHARU , HARADA TOSHIYUKI
IPC分类号： F01D9/02 , F01D9/04
摘要： PURPOSE: To effectively prevent the erosion of a moving blade by surely preventing the drain, which flows on an outer peripheral wall surface of a nozzle, from flowing into the back side of the nozzle because of a secondary flow at a nozzle blade part. CONSTITUTION: An erosion preventing device is provided with an outer peripheral wall 1 forming an annular passage, which is enlarged toward the downstream in the direction of a turbine shaft, a plurality of nozzle blades 4, which are arranged at a certain interval along the circumferential direction on the inner surface side of this outer peripheral wall 1, and a moving blade 5, which is arranged on the rear stage side of this nozzle blade 4 and actuated by the wet steam that is supplied to the annular passage. In addition, a water-droplet- flow regulating means is prepared, which restricts the position in the radial direction of a water droplet, which flows from the outer peripheral surface wall 1 along the nozzle blade surface because of the secondary flow and which is blown off a nozzle rear edge 11.

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