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1. 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.

2. 发明专利

JPH11190204A TURBINE STATIONARY BLADE 失效
公开(公告)号：JPH11190204A
公开(公告)日：1999-07-13
申请号：JP35748997
申请日：1997-12-25
申请人： HITACHI LTD
发明人： TSURUKI MASAKI , IKEGUCHI TAKASHI
IPC分类号： F01D9/02 , F01D9/04
摘要： PROBLEM TO BE SOLVED: To reduce stress on the inner walls of cooling passage inlet/outlet by enhancing rigidity of connection portions for a blade having an internal cooling passage and for end walls which form the cooling passage inlet/outlet. SOLUTION: In a turbine stationary blade in which a blade 9, an outer end wall 7 and an inner end wall are integrally formed, the blade 9 having an internal cooling passage 16, with an inlet 15a and an outlet 15b of the cooling passage 16 opened on an outward surface 14 of the outer end wall 7, a cover plate is provided to form a gap as a cooling passage between it and the outward surface of the outer end wall 7 around an area including the inlet 15a and the outlet 15b, a cylindrical blade extension portion 12 surrounding both the inlet 15a and the outlet 15b extends outward from the cover plate and is integrated with the outer end wall 7, in an area including both the inlet 15a and the outlet 15b on the outer surface 14.

3. 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.

4. 发明专利

JPH10339172A HYDROGEN COMBUSTION TURBINE PLANT 失效
公开(公告)号：JPH10339172A
公开(公告)日：1998-12-22
申请号：JP14632397
申请日：1997-06-04
申请人： HITACHI LTD
发明人： MARUSHIMA SHINYA , IKEGUCHI TAKASHI , KAWAIKE KAZUHIKO
IPC分类号： F01K25/00 , F02C1/10 , F02C3/22 , F02C7/18
摘要： PROBLEM TO BE SOLVED: To provide a hydrogen combustion turbine plant in which blade cooling performance under high temperature of a hydrogen combustion turbine can be improved, and in which plant efficiency can be improved. SOLUTION: This turbine plant is provided with plural turbines coupled with each other by a steam system, and a stationary blade 18 of the first turbine 2 is cooled by cooling medium flowing in it. As the cooling medium to cool the stationary blade 18 of the first turbine 2, high temperature water generated by heat exchange with discharged steam of the first turbine 2 is used, temperature-risen water after cooling is not emitted into a gas pass in the first turbine, but it is recovered from the stationary blade 18, and the recovered medium is used as supply water for steam to drive the second turbine.

5. 发明专利

JPH10331608A CLOSED STEAM COOLING GAS TURBINE COMBINED PLANT 失效
公开(公告)号：JPH10331608A
公开(公告)日：1998-12-15
申请号：JP13963697
申请日：1997-05-29
申请人： HITACHI LTD
发明人： MARUSHIMA SHINYA , IKEGUCHI TAKASHI , KAWAIKE KAZUHIKO
IPC分类号： F01K23/10 , F02C6/18 , F02C7/18
摘要： PROBLEM TO BE SOLVED: To make cooling steam serve as superheated steam and prevent generation of rotor vibration resulting from water being mixed in rotor blade cooling steam by supplying a part of steam from a high-pressure turbine to a cooling flow passage formed at turbine, and combining the steam passing through the cooling flow passage with the steam from a reheater. SOLUTION: This turbine combined plant supplies exhaust gas from a turbine 3 which forms a gas turbine device together with a compressor 1 and a combustor 2 to a exhaust heat recovery boiler 9 through a route 8, whereas a branch point 43 is formed on the way of the piping for steam from a high-pressure steam turbine 4, the steam branched at this point is guided to a combined point 49 through piping 48, and the outlet steam of a medium pressure superheater 18 in the exhaust heat recovery boiler 9 is made to join. The combined steam is supplied to the stationary blade 51 and the moving blade 52 of the turbine 3 from a branching point 50 as cooling steam. The steam after cooling is recovered at a combined point 53, combined with the steam from a secondary reheater 23 at a combined point 54, passes through a stop valve 33, and supplied to a medium pressure steam turbine 5 for intended work.

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

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.

8. 发明专利

JPH0734900A EXHAUST RECIRCULATION TYPE COMBINED PLANT 失效
公开(公告)号：JPH0734900A
公开(公告)日：1995-02-03
申请号：JP17394093
申请日：1993-07-14
申请人： HITACHI LTD
发明人： UTAMURA MOTOAKI , HOIZUMI SHINICHI , TAKEDA TAIJI , SASAKI TOSHIHIKO , KOMATSU HIDEAKI , KIRIKAMI SEIICHI , SUZUMURA TAKESHI , SASADA TETSUO , IKEGUCHI TAKASHI , SUGITA NARIHISA
IPC分类号： F01K23/10 , F02C3/30 , F02C3/34 , F02C6/18 , F02C7/08 , F02C9/18
摘要： PURPOSE:To improve heat efficiency at the time of partial load driving a by adjusting the amount of gas turbine exhaust gas to be returned to a compressor inlet so as to prevent reduction in the temperature of the gas turbine exhaust gas following the reduction in the road of a combined plant. CONSTITUTION:A combined cycle plant is provided with a combustor 2 carrying out combustion using the air and fuel compressed by a compressor 1, and a gas turbine 3 is driven by the combustion gas of high temperature and high pressure from the combustor 2. The quantity of heat of the exhaust gas of the gas turbine 3 is guided to the steam turbine 5 of an exhaust heat recovery boiler 4, to rotate the turbine, and the power generator connected no nine steam turbine 5 is thus driven. A part of the exhaust gas of the turbine 3 is returned to the air inlet of the compressor 1 through a piping 9 and a recirculation amount control means 10, and power generation output is adjusted by controlling a fuel amount control valve 7 for controlling the amount of fuel to be input into the combustor 2 and the recirculation amount control means 10.

9. 发明专利

JPH0726903A COOLANT RECOVERY TYPE GAS TURBINE 失效
公开(公告)号：JPH0726903A
公开(公告)日：1995-01-27
申请号：JP17284593
申请日：1993-07-13
申请人： HITACHI LTD
发明人： NODA MASAMI , IKEGUCHI TAKASHI , ANZAI SHUNICHI , MURATA EITARO
IPC分类号： F01D5/08 , F01D5/18 , F02C7/18
摘要： PURPOSE:To prevent a disc from being deformed due to a temperature difference, in a turbine in which coolant having passed through a cooling passage in a rotor blade is retrieved through the side wall of the disc, by providing a bypass passage bypassing the cooling passage in the rotor blade, in the vicinity of the outer periphery of the disc. CONSTITUTION:During rotation of rotor blades 2, compressed air from a compressor is led to one of the surfaces of a disc 11 through a passage in a rotary shaft 24, being led to the radially outside of the disc which is therefore cooled under forced convection, and is then led through a cooling passage in each of the rotor blades 2. The compressed air having cooled the rotor blade 2, is led toward the radially inside of the disc 11 along the other one of the surfaces of the disc 11, and is retrieved. In this arrangement, a bypass passage 9 communicating between both side wall surfaces 11a, 11b of the disc is formed in the disc 11 in the vicinity of the outer periphery of the disc 11. Accordingly, the coolant which has cooled the rotor blade 2 so as to have a high temperature is diluted with coolant having passed through the bypass passage 9 so as to lower the temperature thereof, thereby it is possible to prevent the disc from being deformed due to a difference in temperature between both side wall surfaces of the disc.

10. 发明专利

JPH0454041B2 失效
公开(公告)号：JPH0454041B2
公开(公告)日：1992-08-28
申请号：JP17266889
申请日：1989-07-04
申请人： HITACHI LTD
发明人： KAWAIKE KAZUHIKO , IKEGUCHI TAKASHI , NODA MASAMI , ANZAI SHUNICHI , SASADA TETSUO , URUSHA HARUO
IPC分类号： F01D9/02

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