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21. 发明专利

JPH0512621B2 失效
公开(公告)号：JPH0512621B2
公开(公告)日：1993-02-18
申请号：JP30166886
申请日：1986-12-19
申请人： HITACHI LTD
发明人： HIROSE FUMYUKI , IIZUKA NOBUYUKI , KURODA MICHIO , SATO ISAO , ISHIBASHI YOJI , AKATSU SHIGEYUKI
IPC分类号： F23C99/00 , F23R3/34

22. 发明专利

JPH0343535B2 失效
公开(公告)号：JPH0343535B2
公开(公告)日：1991-07-02
申请号：JP14385284
申请日：1984-07-10
申请人： HITACHI LTD
发明人： KURODA MICHIO , SATO ISAO , ISHIBASHI YOJI , UCHAMA YOSHIHIRO , OOMORI TAKASHI , AKATSU SHIGEYUKI , KATO FUMIO , SEGAWA YORIHIDE , WADA KATSUO , IIZUKA NOBUYUKI
IPC分类号： F23R3/30 , F23R3/02 , F23R3/06 , F23R3/14 , F23R3/34

23. 发明专利

JPH0250026A GAS TURBINE COMBUSTOR AND ITS OPERATION METHOD 失效
公开(公告)号：JPH0250026A
公开(公告)日：1990-02-20
申请号：JP19598788
申请日：1988-08-08
申请人： HITACHI LTD
发明人： ISHIBASHI YOJI , INOUE HIROSHI , OMORI TAKASHI , HASHIMOTO TAKASHI , KATO FUMIO , AKATSU SHIGEYUKI , ARAI TORU , KURODA MICHIO , KUNO KATSUKUNI
IPC分类号： F02C7/22 , F02C7/26 , F23C99/00 , F23R3/34
摘要： PURPOSE:To enable a burner not to be too high temperature and make it produce low-concentration NOX at the time of start by providing an auxiliary burner for transferring a first stage combustor to a premixing chamber by flame holding and quenching in the first stage combustor by ignition. CONSTITUTION:Since there is an auxiliary burner 52, at the time of ignition thereof a diffusion burning flame is formed in a first stage combustor 1, a premixing flame is shaped and the auxiliary burner 52 is allowed to stop, so that the first stage combustor 1 is transferred to the premixing chamber. The mixing gas of the premixing chamber is flame-held in a second stage combustor together with a second stage flame and a first stage burning is premix-burned to be perfect premixing burning including the first stage flame and the second flame. Further, since at the time of transfer auxiliary burner combustion is supplied as first stage fuel, transfer for low NOX can smoothly be performed without the influence of rapid transfer, excessive load and the like for second stage premixing combustion at the time of premixing burning transfer. Further, since premixing combustion is wholly performed without any diffusion combustion part, lower NOX can be achieved.

24. 发明专利

JPH0240418A GAS TURBINE BURNER 失效
公开(公告)号：JPH0240418A
公开(公告)日：1990-02-09
申请号：JP18844488
申请日：1988-07-29
申请人： HITACHI LTD
发明人： OMORI TAKASHI , ISHIBASHI YOJI , INOUE HIROSHI , KATO FUMIO , HASHIMOTO TAKASHI , KURODA MICHIO , AKATSU SHIGEYUKI
IPC分类号： F23R3/30 , F23C99/00 , F23R3/34
摘要： PURPOSE:To obtain a gas turbine burner which is capable of carrying out stabilized premixing combustion even under lean side combustion state advantageous to the reduction in NOx and high speed conditions by bending forcibly a premixed jet stream and enlarging a circulating flow region on the downstream side. CONSTITUTION:A main combustion 5, which is larger than a sub-combustion chamber 4 in diameter, is installed. On the head of the sub-combustion chamber 4 is installed a first stage fuel nozzle 7, while a second stage premixing fuel nozzle 10, and a revolving device 8 are installed to an enlarged section which is communicated with the main combustion chamber 5. A main chamber side wall 11 near the outlet of the revolving device 8 forms a recessed part 15 based on a combination of a reduction part 12, a drastic enlarges part 13, and a circulating part 14 on an after stream side, and further forms air cooling structure by adopting a double wall layer. A part of premixed jet air stream 29 is bent at a reduced section 12 toward the central part 33, which enlarges the region of circulating stream 34 induced inside the recessed part 15 larger than it looked and promotes the reaction of combustion.

25. 发明专利

JPS6454122A GAS TURBINE BURNER 失效
公开(公告)号：JPS6454122A
公开(公告)日：1989-03-01
申请号：JP21009587
申请日：1987-08-26
申请人： HITACHI LTD
发明人： ISHIBASHI YOJI , HASHIMOTO TAKASHI , INOUE HIROSHI , KATO FUMIO , OMORI TAKASHI , AKATSU SHIGEYUKI , KURODA MICHIO
IPC分类号： F23R3/02 , F23R3/34
摘要： PURPOSE:To stably burn a premixed flame on the side of a dilute mixed gas under a high-speed condition by providing a barrier member with respect to a premixed gas flow in the vicinity of an outlet part of an annular premixed flow passage thereby to form a stable flame in a recirculation flow region at the downstream of the barrier member. CONSTITUTION:An annular flow passage formed by an inner peripheral flow passage wall 6 and an outer peripheral flow passage wall 6 of the burner is partitioned peripherally by a flame holding plate 7. A second stage fuel is supplied to respective partitioned flow passages, and a premixed gas is supplied to a main chamber combustion cylinder 1. Further, a flame holding plate 7 at the outlet part of the annular flow passage is tapered toward the side of the inner peripheral flow passage wall, and a barrier member 8 is provided at the downstream inner peripheral flow-passage wall of the flame holding plate 7. This barrier member 8 is provided over the entire periphery of the inner peripheral flow passage wall. Thereby, immediately after passing of a part of the premixed gas flow along the inner peripheral flow passage wall 5 through the barrier member 8, the flow passage rapidly expands to create an exfoliation and to form a recirculation flow. In this recirculation flow, a stable small flame is formed since the staying time of the premixed gas is long, thus the stability of the main flow flame being improved.

26. 发明专利

JPS629123A GAS TURBINE COMBUSTOR 失效
公开(公告)号：JPS629123A
公开(公告)日：1987-01-17
申请号：JP14477285
申请日：1985-07-03
申请人： HITACHI LTD
发明人： SATO ISAO , ISHIBASHI YOJI , KURODA MICHIO , UCHIYAMA YOSHIHIRO , IIZUKA NOBUYUKI , WADA KATSUO , HIROSE FUMIYUKI , KUNIHIRO MASATSUGU , AKATSU SHIGEYUKI
IPC分类号： F23R3/26
摘要： PURPOSE:To realize low-temperature lean combustion and to enable reduction of the generation of NOX, by a method wherein a cylindrical member, formed toward the wake flow side of a first-stage combustion chamber and having a closed forward end, is mounted in the first-stage combustion chamber. CONSTITUTION:A liner cap 23 is extended through on the upper stream of a first stage combustion chamber 11, and fuel 24 is injected through plural fuel feed holes 26, formed in a fuel injection part 25, into an annular part 28 surrounded with a combustion chamber 27 and a cylindrical member 13. Combustion is progressed as the fuel is mixed with a air flow 29a through an air hole 19 formed in the surroundings of the fuel injection part and air flows 21a-21d for combustion flowing through air holes 21 formed in the combustion chamber 27. Since the fuel injection hole 25 is positioned in the vicinity of the combustion chamber wall 26, the fuel 24 is mixed with the air flows 21-21d rapidly and at a limited annular space part 28 and therefore, a cooling effect by initial air during a combustion process can be produced, and the presence of a high- temperature formation is dissipated, or formation of a hot spot is rendered ineffective, resulting in the possibility to prevent the generation of NOx.

27. 发明专利

JPS6066020A CONTROL METHOD OF AIR FOR COMBUSTION APPARATUS 失效
公开(公告)号：JPS6066020A
公开(公告)日：1985-04-16
申请号：JP17302783
申请日：1983-09-21
申请人： HITACHI LTD
发明人： KATOU FUMIO , ISHIBASHI YOUJI , OOMORI TAKASHI , SATOU ISAO , HAYASHI NORIYUKI , AKATSU SHIGEYUKI
IPC分类号： F02C9/50 , F23R3/26 , F23R3/34
摘要： PURPOSE:To reduce the concentration of the unburnt matters of CO, HC, etc. in exhaust gas by controlling the quantity of air flowing into a combustion apparatus in response to the load of a combustion chamber and also controlling fuel so that the mixture ratio of air is kept within a flammable range at all times. CONSTITUTION:Air flowing into a sub-chamber 10 from a primary combustion air hole 22 and a secondary combustion air hole 23 and air flowing into a main chamber 11 through an air swirl vane 16 are separated, and controlled in response to the load of a combustion chamber. An annular air chamber 25 is separated into air chambers 2 by a parting plate 27 amounted to the inside of the chamber 25. An upstream side air chamber 28 represents an air chamber for supply to the sub-chamber 10, and a downstream side air chamber 29 is used as an air chamber for inflow into the main chamber through an air swirl vane 14. A cylindrical ring 32 movable in the axial direction of a liner is used as a method through which the quantity of air is controlled by closing or opening the air holes 28 or 29.

28. 发明专利

JPS58122302A METHOD AND DEVICE FOR INTRODUCING COOLING AIR INTO GAS TURBINE ROTOR 失效
公开(公告)号：JPS58122302A
公开(公告)日：1983-07-21
申请号：JP499082
申请日：1982-01-18
申请人： HITACHI LTD
发明人： SHIZUTANI MITSUTAKA , KOBAYASHI SHIGEYOSHI , MATSUMOTO MANABU , AKATSU SHIGEYUKI
IPC分类号： F01D5/08 , F02C7/18
摘要： PURPOSE:To reduce a flow loss which would be caused by the sharp expansion and contraction of a fluid passage, by providing a duct to conduct cooling air to the hollow central part of a turbine rotor. CONSTITUTION:A duct 10 for conducting cooling air 7 from the through hole 2 of the side wall of a stub shaft rotor 1 to its hollow central part 1' is secured with a support 13 on the rotor. Since the cooling air introduced from outside is conducted to the central part 1' of the rotor 1 through the fluid passage, turbulences are prevented from being caused by the sharp expansion and contraction of a cooling air passage. The flow loss is thus reduced.

29. 发明专利

JPS57173530A TEMPERATURE CONTROL METHOD OF MOVING BLADE IN GAS TURBINE 失效
公开(公告)号：JPS57173530A
公开(公告)日：1982-10-25
申请号：JP5850881
申请日：1981-04-20
申请人： HITACHI LTD
发明人： MATSUMOTO MANABU , KURODA MICHIO , KOBAYASHI SHIGEYOSHI , SUGITA NARIHISA , SHIZUTANI MITSUTAKA , AKATSU SHIGEYUKI
IPC分类号： F01D5/18 , F01D5/08 , F02C7/18
摘要： PURPOSE:To always hold temperature of a moving a blade to a certain level and improve reliability and efficiency, by introducing a coolant to the moving blade through a flow passage, providing a flow regulating valve in said flow passage and regulating a flow rate of the coolant with said valve so that detected temperature of the moving blade can be controlled to its permissible temperature. CONSTITUTION:Combustion compressed air is partially extracted as cooling air for a gas turbine, and this cooling air is introduced from a compression chamber 1 to a moving blade 10 through a flow passage 3, internally provided to a compressor rotor 2, internal hole 5 of a rotor connecting shaft 4, and a flow passage 9 between a disc 7 and spacer 8 consituting a turbine rotor 6. Here a flow regulating valve 15, consisting of a valve seat 12, spring 13 and cylinder 14, is provided in the vicinity of a connection part of said rotor 2 to the shaft 4. Then a deviation value, between detected temperature by a temperature sensor 16 from the moving blade 10 and the temperature permissible value, is converted to a pressure value to feed a signal to a pressure regulating valve 17 in a control air line, regulate pressure in a cylinder 14, change an opening of the valve seat 12 and regulate a flow rate of cooling air.

30. 发明专利

JPS5672202A AIRRCOOLED GAS TURBINE BLADE 失效
公开(公告)号：JPS5672202A
公开(公告)日：1981-06-16
申请号：JP14899079
申请日：1979-11-19
申请人： HITACHI LTD
发明人： KOBAYASHI SHIGEYOSHI , MATSUMOTO MANABU , SHIZUTANI MITSUTAKA , AKATSU SHIGEYUKI
IPC分类号： F01D9/02 , F01D5/18
摘要： PURPOSE:To improve an effect of thermal conduction in the direction orthogonal to a blow-off stream of a cooling air and to make a temperature distribution on the blade surface uniform by using a material with large thermal conductivity at the downstream of a blow-off opening through which the cooling air is blown-off. CONSTITUTION:A plurality of projections 11 are formed on an inner wall within a hollow of blade 1 and a space 12 made coming close to a core plug 3. Blow-off openings 6 are formed on the blade 1 around the whole and a blow-off opening 13 is fomred on a rear edge 1b as well. There are piled in layer a heat-resisting metal layer 7, a good thermal conductor layer 8 and a base material 9 on the downstream sides of the blow-off openings 6. Whereby the cooling air 10 makes uniform the temperature distribution on the vane surface at the downstreams of the blow-off openings 6, reduces the thremal stress and enables the reliability to be improved with the help of a heat transmitting effect of a good thermal conductor layer 8.

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