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1. 发明专利

JP2002242606A GAS TURBINE 失效
公开(公告)号：JP2002242606A
公开(公告)日：2002-08-28
申请号：JP2001037566
申请日：2001-02-14
申请人： HITACHI LTD
发明人： AKIYAMA RYO , ENTO SHINYA , MATSUMOTO MANABU , NODA MASAMI
IPC分类号： F01D5/08 , F01D5/18 , F01D11/02 , F01D25/12 , F01D25/16 , F02C7/18
摘要： PROBLEM TO BE SOLVED: To simplify a structure, facilitate a production, and reduce the possibility of occurrence of vibration due to a mis-alignment during operation in a gas turbine cooled by circulating cooling refrigerant in turbine rotor vanes. SOLUTION: A thermally insulated pipe part 12 forming an air layer 21 for protecting a bearing metal 16 against heat from the cooling refrigerant 40 is formed integrally with a seal shaft part 12c forming a labyrinth seal 14 for preventing a cooling medium 40 from leaking together with a flange part 12b so as to form a thermally insulated seal pipe 12. By this, the number of parts installed on a rear shaft 105 can be reduced into one part, and the number of connections of bolts can be reduced. Namely, the structure is so formed that the bearing metal 16 can be protected against the heat from the cooling medium 40 and simplified so as to be manufactured easily. In addition, the possibility of occurrence of the vibration due to mis-alignment can be reduced during the operation.

2. 发明专利

JP2002235501A ROTOR OF GAS TURBINE 失效
公开(公告)号：JP2002235501A
公开(公告)日：2002-08-23
申请号：JP2001032834
申请日：2001-02-08
申请人： HITACHI LTD
发明人： ENTO SHINYA , AKIYAMA RYO , MATSUMOTO MANABU , UENO SANEYUKI , TAKANO TAKESHI
IPC分类号： F01D5/06
摘要： PROBLEM TO BE SOLVED: To suppress bending deformation of a stacking bolt end due to a centrifugal force during an operation in a rotor of a gas turbine. SOLUTION: Counter boring holes 17 and 18 are formed coaxially around the opening of a bolt hole 16 in the side surfaces of disk-like members 2 and 7 on the most front side and most back side. All disk-like members are integrally interconnected by fastening bolt screw parts 8a and 8b projecting from the bottom surfaces of respective counter boring holes 17 and 18 with nuts 9 and 10. A bolt support member 12 is screwed with a bolt overhanging part 8c projecting long from the back end surface 10a of the back nut 10. The bolt support member 12 has at its end a cap member 12a with a diameter slightly smaller than that of the counter boring hole 18. When a centrifugal force is applied to the bolt overhanging part 8c in an operation, the cap member 12a is restricted on the inner peripheral surface of the counter boring hole 18 to restrict the bolt overhanging part 8c in the radial direction, so that the bending deformation of the bolt 8 can be suppressed.

3. 发明专利

JP2001003703A COOLING DEVICE OF GAS TURBINE 失效
公开(公告)号：JP2001003703A
公开(公告)日：2001-01-09
申请号：JP17190099
申请日：1999-06-18
申请人： HITACHI LTD
发明人： MARUSHIMA SHINYA , MATSUMOTO MANABU , NODA MASAMI , KAWAIKE KAZUHIKO , TAKANO TAKESHI , IKEGUCHI TAKASHI
IPC分类号： F01D5/08 , F02C7/18
摘要： PROBLEM TO BE SOLVED: To secure a cylindrical seal member at a specified position without notching a wheel dovetail hook and keep the cylindrical seal member at a position spanning the internal faces of the refrigerant holes of the wheel dovetail and a moving blade dovetail even in repeating the start and stop of a gas turbine. SOLUTION: This cooling device comprises a moving blade 2 connected to the outer periphery of a rotor wheel 3 through dovetail unevenness and is provided with holes 7 and 9 through which refrigerant flows. These holes position in the border section of the bottom face of the recessed section of a dovetail and the tip section of the projected section of a moving blade dovetail opposing to this bottom face and penetrate and span both of them. In addition, cylindrical seal members 10 are fittedly inserted into these holes. In this case, bar-shaped projections 33 are arranged in the outer peripheral walls of the seal members 10, and notch grooves 30 are provided in the rotor wheel sections of the opening sections of the holes through which refrigerant flows to the side faces of the rotor wheel sections, and the seal members 10 move from these notch grooves 30 through the bar-shaped projections 33 of the seal members 10.

4. 发明专利

JP2000045701A GAS TURBINE ROTOR AND ITS ASSEMBLY METHOD 失效
公开(公告)号：JP2000045701A
公开(公告)日：2000-02-15
申请号：JP21440498
申请日：1998-07-29
申请人： HITACHI LTD
发明人： MATSUMOTO MANABU , MARUSHIMA SHINYA
IPC分类号： F01D5/02 , F01D25/00
摘要： PROBLEM TO BE SOLVED: To provide a gas turbine rotor where a windage loss around shafts can be reduced to control the temperature rise of the shafts, and the strength and reliability of the rotor can be improved. SOLUTION: This gas turbine rotor is equipped with a rotor 70 of a compressor for compressing a combustion air; a turbine rotor 50 for generating a motive power; and a middle shaft 60 which is includedly provided between the rotors of the compressor and of the turbine to connect them, and least either of them is formed of a plurality of stacked discs, and the rotor is joined to the middle shaft through bolts. The connection between the rotor 50 formed by stacking the discs and the middle shaft 60, and the stacked connection disc stacked rotors are carried out through a stacking bolt 54 having a joining shuck 55 at a middle position.

5. 发明专利

JPH11148302A GAS TURBINE 失效
公开(公告)号：JPH11148302A
公开(公告)日：1999-06-02
申请号：JP31484097
申请日：1997-11-17
申请人： HITACHI LTD
发明人： MARUSHIMA SHINYA , MATSUMOTO MANABU , IKEGUCHI TAKASHI
IPC分类号： F01D5/08 , F01D5/18 , F02C7/18
摘要： PROBLEM TO BE SOLVED: To reduce stress acting a rotor and to improve operation reliability of a gas turbine by providing flow passage flowing axially on an axial direction overlapping part of plural disks in a rotor where a supplying passage for axially moving refrigerant of a moving blade into a disk and a spacer is provided. SOLUTION: During operation of a gas turbine, while mainstream gas flows from a first-stage moving blade 5 toward a fourth-stage moving blade 8, refrigerant is supplied from the central hole 15 of a stub shaft 13, and flows through a cavity 16, and the central hole 17 of a fourth-stage hollow disk 4 to the central hole 18 of a 3-4 spacer 11. Then, the refrigerant travels through a slit 20 formed on a joining surface 19 between the 3-4 spacer 11 and a third-stage hollow disk 3 to supplying holes 21, 22. Then, the refrigerant flows through a supplying hole 23 penetrating through a secondstage hollow disk 2 and a slit 25 formed on a joining surface 24 between a 2-3 spacer 10 and a second- stage hollow disk 2 to a cavity 26, and is supplied through radial direction hole 27 on the outer periphery side of the second-stage hollow disk 2 to a second-stage moving blade 6.

6. 发明专利

JPH08277726A GAS TURBINE INSTALLATION 失效
公开(公告)号：JPH08277726A
公开(公告)日：1996-10-22
申请号：JP8102995
申请日：1995-04-06
申请人： HITACHI LTD
发明人： NODA MASAMI , KAWAIKE KAZUHIKO , IKEGUCHI TAKASHI , MATSUMOTO MANABU , SUGITA NARIHISA , MARUSHIMA SHINYA , HIGUCHI SHINICHI , TAKEHARA ISAO
IPC分类号： F01D5/18 , F01D9/02 , F01D25/12 , F01K17/04 , F01K23/10 , F02C3/30 , F02C7/16
摘要： PURPOSE: To provide a gas turbine plant having high efficiency in which steam cooling can be achieved in its comparatively simple structure as well as to minimize the consumption of cooling steam so as to improve plant efficiency in a gas turbine installation which cools a turbine stationary and moving blades using steam and recovers the steam. CONSTITUTION: This installation is provided with a first cooling system 12 which supplies steam to a stationary blade 20a so as to cool it and recovers the steam, and a second cooling system 15 which cools moving blades 30a, 30b using the recovered steam and recovers the steam. This installation is constituted by providing cooling means to cool the steam recovered in the first cooling system 12 between the first cooling system 12 and the second cooling system 15. Hereby, the consumption quantity of cooling steam on the turbine stationary blade 20a and the moving blades 30a, 30b can be restricted to the minimum, and also high temperature steam after it cools the moving blades 30a, 30b can be recovered so that plant efficiency is improved.

7. 发明专利

JPH07263195A METHOD AND EQUIPMENT FOR TREATING INNER SURFACE OF DUCT, AND VACUUM DUCT 失效
公开(公告)号：JPH07263195A
公开(公告)日：1995-10-13
申请号：JP4706194
申请日：1994-03-17
申请人： HITACHI LTD
发明人： KOBARI TOSHIAKI , HIRANO NOBUO , MATSUMOTO MANABU , KATANE MAMORU , SAKURAHATA HIROAKI , MATSUZAKI SHIRO
IPC分类号： H05H7/14 , B08B9/04 , B08B9/08 , B23D37/04 , H05H7/00 , H05H13/04
摘要： PURPOSE:To provide duct inner surface treatment equipment capable of surely removing an inner surface contamination layer or a deterioration layer becoming a gas releasing source of a long vacuum duct where mechanical machining on the inner surface is difficult. CONSTITUTION:A broach 10 in which a cutting blade 11 having a chip breaker or a finishing blade 12 are formed in the outer circumference is moved in an axial direction on the inside of a duct to be treated with a rod 32 and a rod driver 34, and the inner surface of the duct 20 is cut in the axial direction to treat the inner surface. A surface contamination layer and deterioration layer formed on the inner surface of the duct 20 when the vacuum container duct 20 is formed from a raw material are surely removed over the axial direction of the inner surface of the duct 20. When the duct is used as a vacuum container, gas release caused by thermal separation and/or photo-stimulated separation by irradiation of emitted light is extremely reduced.

8. 发明专利

JPH07189739A AIR-COOLED GAS TURBINE 失效
公开(公告)号：JPH07189739A
公开(公告)日：1995-07-28
申请号：JP33489793
申请日：1993-12-28
申请人： HITACHI LTD
发明人： MATSUMOTO MANABU , IKEGUCHI TAKASHI , ANZAI SHUNICHI , NODA MASAMI , SASADA TETSUO , TORITANI HAJIME
IPC分类号： F02C7/18
摘要： PURPOSE:To prevent the temperature rise of a rotor generated in association with the recovery of high temperature air after cooling a moving blade so as to reduce thermal stress in a closed air-cooled gas turbine, and recover the pumping power of cooling air so as to obtain the gas turbine with high efficiency. CONSTITUTION:The supply path of moving blade cooling air is formed via a cavity 17 at the center of a rotor, and a path disposed more on the outer peripheral side than the cavity 17 to let high temperature air after cooling the moving blade flow outside of the rotor is formed of an inner passage 40a formed at a spacer 40, a recovery pipe 47 mounted piercing a disc 41, and the like. The inner passage 40a and the recovery pipe 47 are provided with heat insulating means. The high temperature air after cooling the moving blade, and pumping power can be thereby recovered without raising the rotor temperature so as to improve the efficiency of a gas turbine.

9. 发明专利

JPH06188099A SYNCHROTRON RADIATION LIGHT GENERATION DEVICE 失效
公开(公告)号：JPH06188099A
公开(公告)日：1994-07-08
申请号：JP33835392
申请日：1992-12-18
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： MATSUMOTO MANABU , KOBARI TOSHIAKI , KAKIUCHI SHUNJI , TSUMAKI KOJI , TORII TSUNEO
IPC分类号： H05H13/04
摘要： PURPOSE:To raise evacuation efficiency. CONSTITUTION:A distribution type ion pump(DIP) 23 is disposed on an outer portion of charged particle orbit 13. Means of preventing light irradiation of DIP 23 is taken by eliminating a portion where light passes. And further, an absorber 31 for absorbing light passing to side wall of DIP 23 is disposed. Accordingly, because DIP is disposed at the position of a large gas source due to photodesorption, the evacuation efficiency is raised. Photoelectrons released from the absorber are contained within a cell of DIP, so that ionization of gas molecules is enhanced to raise the evacuation efficiency. In power connection in a low voltage region, the ignition delay is eliminated.

10. 发明专利

JPH03245449A DISCHARGE STABILIZING PENNING DISCHARGE ELECTRODE 失效
公开(公告)号：JPH03245449A
公开(公告)日：1991-11-01
申请号：JP4103390
申请日：1990-02-23
申请人： HITACHI LTD
发明人： KOBARI TOSHIAKI , UEDA SHINJIRO , MATSUMOTO MANABU , IKEGUCHI TAKASHI , SONOBE TADASHI , KAKIUCHI SHUNJI
IPC分类号： H01J41/06
摘要： PURPOSE:To stabilize penning discharge by making it possible that the relative positional relation between the penning discharge electrode and the direction of a magnetic field can be changed in vacuum. CONSTITUTION:An ion pump comprises a cylindrical anode cell 15 and cathodes 2 being arranged not to contact with both ends of the cell 15, while the pump consists of a penning discharge electrode where a magnetic field B is applied along the center axis of the anode cell, and then plural pieces of anode cells are united to form an anode 3 between two sheets of cathodes 2. Penning discharge is very sensitive to the accuracy of the deviation angle alpha between the center axis of the cell 15 and the direction of the magnetic field. In this case, if the deviation angle alpha can be changed by changing the relative position of the cathode 2 and the cell 15, discharge currents can be increased, and penning discharge can be stabilized. Accordingly, in the ion pump, if it is adjusted so that the discharge currents may be the maximum or that the pressure may be the lowest by changing the deviation angle alpha, stabilized penning discharge can be gotten, and the maximum exhaust speed can be gotten.

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