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1. 发明专利

JPH1122901A HIGH TEMPERATURE GAS PIPELINE 失效
公开(公告)号：JPH1122901A
公开(公告)日：1999-01-26
申请号：JP17802997
申请日：1997-07-03
申请人： HITACHI LTD
发明人： INAGE SHINICHI , SASAO TOSHIBUMI , MURAKAMI TADATAKA , KOBAYASHI SHIGEYOSHI
IPC分类号： F16L9/00 , F22B1/02 , F23J11/00
摘要： PROBLEM TO BE SOLVED: To permit the restraining of abrasion and the like of a pipe while lowering a pressure loss by a method wherein a plurality of projections are arranged on the inner wall of curved part of a high temperature gas pipeline, through which exhaust gas, discharged out of a boiler, flows, with a space circumferentially between them. SOLUTION: Pulverized coal is burnt in a fluidized bed boiler by air, supplied by an air compressor, while high temperature gas 5, generated by the combustion of the pulverized coal, is introduced into a heat transfer tube, installed in the boiler. The high temperature gas 5 is transported to a gas turbine by a high temperature pipeline 10 through a header after removing ash particles by a cyclone. In this case, numberless of ash particles 13 are collided against the wall surface of the high temperature pipeline 10 and serious abrasion is generated on the wall surface of the pipe sometimes. Especially, the abrasion is remarkable in the curved part of the high temperature pipeline 10. Therefore, the projections or eddy generating devices 14 are installed on the inner wall of outer wall side of the curved part of high temperature pipeline 10. The eddy generating device 14 is provided with a triangular pyramid shape and the plurality of eddy generating devices 14 are installed across an area from the upstream side to the downstream side of the flow direction of gas in the pipeline with a space between each other.

2. 发明专利

JPH10290966A GRAIN SPRAY NOZZLE 失效
公开(公告)号：JPH10290966A
公开(公告)日：1998-11-04
申请号：JP10422997
申请日：1997-04-22
申请人： HITACHI LTD
发明人： MURAKAMI TADATAKA , INAGE SHINICHI , SASAO TOSHIBUMI , TAKEHARA ISAO , AKAI YASUSHI
IPC分类号： B08B5/00 , B05B1/02 , B24C5/04 , F02B77/04 , F02C7/232 , F02C7/30
摘要： PROBLEM TO BE SOLVED: To effectively remove dust by tapering the section of a passage nozzle leading to a tip and forming the axial sections of the nozzle tip into the same concaved arcs opposed to each other with the axis as the center. SOLUTION: The faces of a grain spray nozzle 7 with which an axial stream is collided is formed into the same arc, the stream is allowed to flow along the faces to eliminate a stagnant vortex, hence a resistance loss is decreased, and the stream is accelerated. Meanwhile, the radius of the arc is decreased and the application range is expanded to secure a necessary spray angle. The exhaust gas from a high pressure fluidized-bed combustion boiler still contg. dust is supplied to the combustor 9 of a dummy gas turbine, passed through a transition piece 10 and allowed to flow from the stator blade 11 of the gas turbine to the rotor blade. The nozzle 7 is opposed to the stator blade 11 on the lower wall of the transition piece 10, the sprayed grain hits against the dust depositing on the stator blade 11, and the dust is blown off and removed.

3. 发明专利

JPH1054560A GAS TURBINE COMBUSTOR 失效
公开(公告)号：JPH1054560A
公开(公告)日：1998-02-24
申请号：JP11570697
申请日：1997-05-06
申请人： HITACHI LTD
发明人： TANIGUCHI MASAYUKI , AZUHATA SHIGERU , ARASHI NORIO , MURAKAMI TADATAKA , YOSHII YASUO , SOMA KENICHI , KOBAYASHI YOSHINOBU , ISHIBASHI YOJI , KURODA MICHIO
IPC分类号： F23R3/18 , F23C99/00 , F23R3/20 , F23R3/28 , F23R3/32 , F23R3/34 , F23C11/00
摘要： PROBLEM TO BE SOLVED: To ensure a more stable flame and hence more reduce NOX upon premixing combustion by disposing a burner at the axis center upstream a combustion chamber, and disposing a plurality of nozzles around the burner, and further injecting a fuel and air from an injection hole formed corresponding to each nozzle. SOLUTION: Combustion air 1 flows from a primary air supply hole 33 into a primary combustion inner cylinder 31 and from a secondary air supply hole 25 into a secondary combustion inner cylinder 21. Fuels, e.g. liquefied natural gases flow from a primary fuel reception nozzle 32 and a secondary fuel reception nozzle 27 into a combustor 100 and inject from a pilot burner 34 and a secondary fuel nozzle 26. The primary fuel 2 injected from the pilot burner 34 is brought into a reaction with the combustion air 1 and diffuses into a primary combustion chamber 30 to form a flame. In contrast, the secondary fuel 3 injected from the secondary fuel nozzle 26 is mixed with the combustion air 1 in premixing burners 23, 23 to form premixed gas 5 and then inject it into a secondary combustion chamber 20.

4. 发明专利

JPH08296851A GAS TURBINE BURNER AND BURNING METHOD THEREFOR 失效
公开(公告)号：JPH08296851A
公开(公告)日：1996-11-12
申请号：JP10339895
申请日：1995-04-27
申请人： HITACHI LTD
发明人： ITO KAZUYUKI , KOBAYASHI SHIGEYOSHI , AZUHATA SHIGERU , MURAKAMI TADATAKA , KOMATSU YASUTAKA
IPC分类号： F23R3/18 , F23R3/26 , F23R3/32
摘要： PURPOSE: To provide a gas turbine burner having the low exhaust NOx amount and the high reliability. CONSTITUTION: A premixing nozzle 1 for mixing fuel with the air is disposed in a burner. A flame stabilizer 2 to be connected to the nozzle by a support member 3 to become the resistor of jet mixed gas flow from the nozzle 1 is provided near an outlet for injecting mixed gas from the nozzle 1 to a combustion chamber, and a passage to become a cooling air channel is opened with the member 3. The at least one end face protrudes through the wall of the nozzle, the opening of the cooling air channel is provided at the channel of the nozzle outside, and a cooling air jet passage is provided on the surface of the member 3.

5. 发明专利

JPH0783076A COMBUSTION STATE GRASPING METHOD AND DEVICE TO PRACTICE THIS METHOD 失效
公开(公告)号：JPH0783076A
公开(公告)日：1995-03-28
申请号：JP23339393
申请日：1993-09-20
申请人： HITACHI LTD
发明人： ITO KAZUYUKI , MURAKAMI TADATAKA , AZUHATA SHIGERU , KURODA MICHIO
IPC分类号： F02C9/00 , F02C9/28 , F23R3/00 , F23R3/32 , F23R3/34
摘要： PURPOSE:To constantly and precisely grasp a combustion state by previously examining a correlation between temperature of a flame holder to hold premixed flame and a combustion state of premixed gas and grasping the combustion state relative to the measured temperature of the flame holder from the correlation. CONSTITUTION:A combustor 10 is furnished with a primary combustion cylinder 13 forming a primary combustion chamber 12 inside of a combustor casing 11 and a secondary combustion cylinder 22 arranged on the downstream side of the primary combustion cylinder 13 and forming a secondary combustion chamber 21. Additionally, at least a premixed burner 23 to inject premixed gas into the secondary combustion chamber 21 and a flame holder 30 to hold premixed flame 29 due to combustion of the premixed gas are furnished. In this case, correlation between temperature of the flame holder 23 and a combustion state of the premixed gas is previously examined. Thereafter, the temperature of the flame holder 30 is measured, for example, by a thermocouple 35. In the meantime, by a control device 100, a combustion state relative to the measured temperature of the flame holder 30 is grasped from the correlation.

6. 发明专利

JPH06213445A COMBUSTION APPARATUS FOR GAS TURBINE 失效
公开(公告)号：JPH06213445A
公开(公告)日：1994-08-02
申请号：JP562593
申请日：1993-01-18
申请人： HITACHI LTD
发明人： TANIGUCHI MASAYUKI , KOBAYASHI YOSHINOBU , MURAKAMI TADATAKA , ITO KAZUYUKI , AZUHATA SHIGERU , KURODA MICHIO
IPC分类号： F23R3/14 , F23R3/18
摘要： PURPOSE:To obtain a combustion apparatus for a gas turbine having a first stage burner which has excellent stability and easy cooling by injecting mixed gas of fuel and the air as a swirling flow from the burner and forming a diffusion flame by the burner. CONSTITUTION:A first stage burner 1 is provided near a central axis of a primary combustion chamber 19, and a ringlike second stage burner 2 is provided at a downstream of the chamber 19. The air fed to the burner 1 is mixed with fuel for primary premixing combustion to be injected from a primary premixing combustion fuel injection port 11 in a mixing chamber 6, and injected as a swirling flow into the chamber 19 via a swirler 8 to form a circulation flow 23 at a center of the swirling flow. A diffusion combustion fuel injection port 10 is provided at a center of the burner 1 to inject fuel into the flow 23. At the time of starting a gas turbine, fuel is injected from the port 10 to form a stable diffusion flame.

7. 发明专利

JPH05113207A BURNER 失效
公开(公告)号：JPH05113207A
公开(公告)日：1993-05-07
申请号：JP27416991
申请日：1991-10-22
申请人： HITACHI LTD
发明人： MURAKAMI TADATAKA , TANIGUCHI MASAYUKI , NARATO KIYOSHI , KOBAYASHI YOSHINOBU , AZUHATA SHIGERU , KURODA MICHIO , SATO ISAO , TSUKAHARA SATOSHI
IPC分类号： F23D14/26 , F23D14/74 , F23D14/78
摘要： PURPOSE:To provide a burner in which there is no fear of damage by burning and flames can be stably formed, by a method wherein a cooling medium is allowed to flow in the hollow part of the inside of a flame holder and is discharged into a combustion chamber. CONSTITUTION:A primary flame holder 2 and a secondary flame holder 4 are formed in a hollow structure. At the outside of a combustion chamber, a cooling medium 16 composed of combustion air 26, cooling air 37 and a mixture of spray water and the cooling air 37 is individually introduced into the insides of the primary flame holder 2 and the secondary flame holder 4 through guide pipes 21, which are the inlets of the cooling medium, and at the inside thereof, a heat-receiving surface on each of these flame holders is individually cooled. After the cooling medium 16 cools these surface, the cooling medium 16 is discharged into a primary mixed gas stream 1 and a secondary gas stream 3 through cut surface-like openings 17 which are formed at right angles to the primary and secondary gas streams 1, 3 respectively colliding with the primary and secondary flame holders 2, 4. In this way, even if the cooling medium discharged into the combustion chamber is increased, flames held on the basical surface of each of these flame holders are not affected thereby. In such a manner, the flame holders 2, 4 are cooled on combustion and damage by burning is prevented.

8. 发明专利

JPH01279574A INTERNAL REFORMING TYPE MOLTEN CARBONATE FUEL CELL 失效
公开(公告)号：JPH01279574A
公开(公告)日：1989-11-09
申请号：JP10902688
申请日：1988-05-06
申请人： HITACHI LTD , TOKYO ELECTRIC POWER CO
发明人： YOSHIOKA SUSUMU , HIGASHIYAMA KAZUHISA , MURAKAMI TADATAKA , MURAI MASAHARU , ITOU SHINGO , KOBAYASHI TOSHIO
IPC分类号： H01M8/02 , H01M8/06 , H01M8/14
摘要： PURPOSE:To prevent the permeation of a carbonate into a reforming catalyst to retard the activity deterioration of the reforming catalyst by arranging a carbonate retainer in the region adjacent to the side wall of a fuel gas passage so as to surround the reforming catalyst. CONSTITUTION:A carbonate permeated from the side walls 24, 24' of a fuel passage is repelled by carbonate retainers 40, 40', or absorbed and retained in the retainers 40, 40' for storing for a long time. The permeation of the carbonate into a reforming catalyst 13 is prevented and the deterioration of the catalyst is retarded. The carbonate is removed by reaction and vaporization while it is stored for a long time. The permeation of the carbonate into the reforming catalyst is prevented even in lengthy operation, and the life of the catalyst is lengthened. A metallic porous body, metal fiber sinter, or ceramic porous body is used in the carbonate retainer. The carbonate retainer is used in the form of plate.

9. 发明专利

JPS62287575A INTERNAL REFORMING CATALYZER FOR FUEL CELL 失效
公开(公告)号：JPS62287575A
公开(公告)日：1987-12-14
申请号：JP13014086
申请日：1986-06-06
申请人： HITACHI LTD
发明人： HIGASHIYAMA KAZUHISA , YOSHIOKA SUSUMU , MURAKAMI TADATAKA , SHIMODA MAKOTO
IPC分类号： H01M8/02 , H01M8/06
摘要： PURPOSE:To kept off any catalytic degradation due to upward seepage of an electrolyte as well as to aim at the promotion of long service life in an internal reforming catalizer, by forming each end of two-side frames being opposed to each other, among frames of four sides, into a knife edge form. CONSTITUTION:A catalytic compact 23 set up in a catalyzer supporter 24 comes into contact with a catalyzer supporting surface 19 by a knife edge 22, and this contact part 14 comes to a linear contact. Methane and water vapor out of a fuel gas inlet 8 comes into contact with a catalytic layer while they flow in a space 15 at a lower part of the catalytic compact 23, and converted into hydrogen gas, while a rib 3 stably holds an electrolytic plate 12. An electrolyte contained in this plate 12 tries to climb by way of an anode 11, a collector plate 10 and a porous corrosive layer on a surface of the rib 3 and reach to the catalytic layer 1, but a linear contact part 14 by the knife edge and the supporting surface exists in the point midway in the route so that it fails to reach the catalytic layer, thus a reforming catalyzer can keep its activity for a long period of time.

10. 发明专利

JPS6269467A FUEL CELL 失效
公开(公告)号：JPS6269467A
公开(公告)日：1987-03-30
申请号：JP20650485
申请日：1985-09-20
申请人： HITACHI LTD
发明人： SHIMODA MAKOTO , YOSHIOKA SUSUMU , MURAKAMI TADATAKA , HIGASHIYAMA KAZUHISA
IPC分类号： H01M8/02 , H01M8/06 , H01M8/24
摘要： PURPOSE:To uniform the distributions of electrical current density and temperature in a fuel cell, by annularly disposing an electrolyte plate, a fuel electrode, an oxidizer electrode, current collection plates and separators. CONSTITUTION:An annular fuel electrode 2 and an annular oxidizer electrode 3 are stuck to both the sides of an annular electrolyte plate 1. Annular current collection plates 5 are stuck to the surfaces of the fuel electrode 2 and the oxidizer electrode 3, which are not in contact with the electrolyte plate 1. This assembly is interposed between separators 4 whose central and peripheral portions have inlet and outlet ports for a fuel and an oxidizer. A catalyst for internal reformation is stuck to the separator 4 hear the fuel electrode 2. As as result, the distribution of heat in endothermic reaction is uniformed so that the distribution of temperature in a fuel cell is evened. Since the concentration of the fuel on the feed side thereof is higher, the velocity of gas flow is heightened. The velocity of gas flow is lowered where the fuel is consumed and the concentration of hydrogen is decreased. As a result, a sufficient cell reaction progresses even with a low concentration of hydrogen.

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