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31. 发明专利

JPH04136603A BURNER AND COMBUSTION EQUIPMENT 失效
公开(公告)号：JPH04136603A
公开(公告)日：1992-05-11
申请号：JP25640490
申请日：1990-09-26
申请人： HITACHI LTD
发明人： KOBAYASHI YOSHINOBU , AZUHATA SHIGERU , TANIGUCHI MASAYUKI , MURAKAMI TADATAKA , NARATO KIYOSHI , KURODA MICHIO , TSUKAHARA SATOSHI
IPC分类号： F23D11/12 , F23D11/00 , F23D11/40 , F23D23/00 , F23J15/04 , F23K5/20 , F23L7/00 , F23R3/14 , F23R3/16 , F23R3/18 , F23R3/30
摘要： PURPOSE:To eliminate the attachment of the liquid fuel to the inner walls of a combustion chamber, atomize the liquid fuel, and reduce NOx by forming a straight flow in the periphery of the swirl flows and spraying liquid fuel in the form of a film to the boundary between the swirl flows and the straight flow. CONSTITUTION:The liquid fuel is preheated by a preheater 70 and goes through a fuel distributor 76, fuel supply pipe 47, and fuel reservoir 46, and is supplied to the inner circumferential face on the upstream side of an inner cylinder. The combustion air that flows into the inner cylinder 45 forms swirl flows in the inner cylinder 45 by a swirler 50 and presses the liquid fuel supplied to the inner circumferential face of the inner cylinder 45 on to the inner cicumferential face to form the fuel into a film. Since the diameter of the inner circumferential face of the inner cylinder 45 is extended as it goes to the downstream side, the thickness of the fuel in the film shape becomes thinner as it goes to the downstream. The liquid fuel that reaches the downstream end of the inner cylinder 45 is blown out to the boundary face between the swirl flow formed in the inner cylinder 45 and the straight flow formed between the inner cylinder 45 and the outer cylinder 41, and atomized by receiving the shearing force generated by the actions of the swirl flows and the straight flow.

32. 发明专利

JPH04131619A GAS TURBINE COMBUSTION DEVICE 失效
公开(公告)号：JPH04131619A
公开(公告)日：1992-05-06
申请号：JP24873190
申请日：1990-09-20
申请人： HITACHI LTD
发明人： TSUKAHARA SATOSHI , HAYASHI NORIYUKI , KOBAYASHI SHIGEYOSHI
IPC分类号： F23R3/26 , F23R3/30
摘要： PURPOSE:To improve a thermal efficiency under a partial load and reduce a concentration in discharging NO2 by a method wherein a flow rate control valve is installed at an inlet of an inner cylinder flow passage of air for making pre-mixture gas with fuel, a downstream side of the inner cylinder is provided with a bypass valve and then the opening of each of the flow rate control valve and the bypass valve is controlled in response to a flow rate of fuel. CONSTITUTION:A fuel flow rate F1 at a fuel nozzle 107 is measured by a flow meter 132, a fuel flow rate F2 at a fuel nozzle 101 is measured by a flow meter 134. These flow rates are corrected in references to a temperature of surrounding air and an amount of suction air of a compressor 121 so as to get corrected fuel flow rates F1* and F2*, respectively. Then, F1*+F2* is compared with a constant value K and when a relation of F1*+F2* K is attained, a fuel flow rate correction value F2* is compared with a constant value A and in turn a relation of F2* A is attained, a rotational angle of each of motors 152 and 162 is controlled in such a way that opening of the flow rate control valve 104 is proportional to F2*/F2max* and the opening of the bypass valve 105 is proportional to (F2max*-F2max*)/F2max*.

33. 发明专利

JPH01182529A CONTROLLING METHOD AND DEVICE FOR ATOMIZING AIR OF GAS TURBINE 失效
公开(公告)号：JPH01182529A
公开(公告)日：1989-07-20
申请号：JP390188
申请日：1988-01-13
申请人： HITACHI LTD
发明人： ISHIBASHI YOJI , TSUKAHARA SATOSHI , HAYASHI NORIYUKI , ANZAI SHUNICHI , TAKAMI TOSHIJI
IPC分类号： F02C7/22
摘要： PURPOSE:To suppress a sudden temperature rise upon ignition in a device provided with an atomizing air compressor which supplies air for atomizing to an air atomizing type fuel injection valve, by setting a ratio of an atomized air pressure to a combustion air pressure adjustable according to a driving condition. CONSTITUTION:Combustion air boosted at a main compressor 1 is supplied to a combustor 2. Combustion gas with high temperature/pressure generated thereat is supplied to a gas turbine 3 to perform work, and to drive a load 4. A main atomizing air compressor 6, driven by turbine and an auxiliary atomizing air compressor 9, driven by a device such as motor, are provided for a high pressure atomizing system for atomizing fuel. High pressure air obtained thereby is supplied to a fuel injection valve 5 as air for atomization. In this case, the pressure of combustion air and atomizing air is respectively detected by pressure sensors 14, 16 and an intake valve 13 is adjusted to control the ratio of atomizing air pressure to combustion air pressure according to a driving condition.

34. 发明专利

JPS63134821A COOLING STRUCTURE OF GAS TURBINE COMBUSTOR TAIL PIPE 失效
公开(公告)号：JPS63134821A
公开(公告)日：1988-06-07
申请号：JP27862786
申请日：1986-11-25
申请人： HITACHI LTD
发明人： SAKURAI SHIGEO , UMEZAWA SADAO , TSUKAHARA SATOSHI , HAYASHI NORIYUKI
IPC分类号： F02C7/18
摘要： PURPOSE:To attempt reduction of heat stress of the outer circumferential wall by connecting a tail pipe and t he outer circumferential wall with overlapping and engaging and arc-shaped spring on them. CONSTITUTION:One end of a cooling cover 2 arranged with a certain space from the outer wall of a tail pipe 1 is connected to the frame of the exit part of the tail pipe 1 through a double arc-shaped spring. An arc-shaped spring 7 is fixed to the upper stream side of the tail pipe 1 and connected with overlapping and engaging the other end of an arc-shaped spring 4 of the cooling cover 2. The installing part can thus be flexible structure, and heat stress of the cooling cover can be reduced.

35. 发明专利

JPS6380021A GAS TURBINE COMBUSTOR TAIL PIPE COOLING STRUCTURE 失效
公开(公告)号：JPS6380021A
公开(公告)日：1988-04-11
申请号：JP22485286
申请日：1986-09-25
申请人： HITACHI LTD
发明人： TSUKAHARA SATOSHI , HAYASHI NORIYUKI , SAKURAI SHIGEO , UCHIYAMA YOSHIHIRO , KUMADA KAZUHIKO
IPC分类号： F02C7/18
摘要： PURPOSE:To make thermal stress in a cooling cover adjustable, by locking one end of a shield plate smaller in axial length than the cooling cover externally fitted in a combustor tail pipe, to this cooling cover. CONSTITUTION:A cooling cover 2 provided with a through hole for cooling air is externally fitted in a combustor tail pipe 1. One end of a shield plate 3, smaller in axial length than the cooling cover 2, is locked to this cooling cover 2, and a part of an outer surface of the cooling cover 2 is covered with this shield plate 3. With this, a heat transfer rate on the cooling cover outer surface covered with the shield plate 3 is lowered down to some extent. And, dimensional form of the shield plate 3 is properly selected whereby thermal stress in the cooling cover is adjustable.

36. 发明专利

JPS62288328A COOLING STRUCTURE FOR GAS TURBINE COMBUSTOR TAIL PIPE 失效
公开(公告)号：JPS62288328A
公开(公告)日：1987-12-15
申请号：JP13183286
申请日：1986-06-09
申请人： HITACHI LTD
发明人： TSUKAHARA SATOSHI , HAYASHI NORIYUKI , SAKURAI SHIGEO , UMEZAWA SADAO
IPC分类号： F02C7/18
摘要： PURPOSE:To enable reduction of thermal stress, by a method wherein the one end of an outer peripheral wall is joined to a tail pipe through a bellows, and the end part on the bellows side of the outer peripheral wall forms insertion structure in that it is slidably insertable in the tail pipe. CONSTITUTION:A cooling cover plate 2 is situated to the outer periphery in a position in the vicinity of an outlet 10 of a tail pipe 1. The the end part on the outlet side of the cooling cover plate 2 is inserted in a groove 6 formed in a tail pipe outlet frame 3. The cooling cover plate 2 is joined with the outlet frame 3 through a bellows-form seal plate 7. Joining of the cooling cover plate with the outlet frame through the seal plate 7 having low rigidity and allowing wide deformation enables reduction of thermal stress produced due to a difference in thermal expansion between the cooling cover plate and the tail pipe 1.

37. 发明专利

JPS62166210A VAPOR INJECTION NOZZLE OF GAS TURBINE BURNER OR THE LIKE 失效
公开(公告)号：JPS62166210A
公开(公告)日：1987-07-22
申请号：JP792786
申请日：1986-01-20
申请人： HITACHI LTD
发明人： ISHIBASHI YOJI , UCHIYAMA YOSHIHIRO , IWAI KAZUMI , TSUKAHARA SATOSHI , HAYASHI NORIYUKI , IIZUKA NOBUYUKI , WADA KATSUO , KUMADA KAZUHIKO
IPC分类号： F23R3/28 , F23C99/00
摘要： PURPOSE:To improve the unstability of flame and increase the NOx reducing effect by directly supplying vapor into a burner liner without mixing vapor with combustion air. CONSTITUTION:While flowing along an annular flowpath formed by a burner liner 3 and a burner outer cylinder 1 toward the head side of the burner, combustion air 100 is supplied to a burner 22 as primary combustion air 101, burner liner cap cooling air 104 and turning air 102. An oil fuel 110 and a gas fuel 120 injected through a fuel nozzle 10 are stabilized by a recirculation flow 30 induced by the turning air flow 102, and the temperature of flame raised to the highest in a recirculation flow region 40 by the primary combustion air 101. A vapor jet 131 is a jet which is discontinuous in the peripheral direction and only lowers the oxygen content of turning air locally in the vicinity of a fuel nozzle outlet, and deterioration of the flame holding function is small. Vapor flows while mixing with turning air toward and downward, and the NOx reducing effect becomes high through cooling the high-temperature flame portion in the recirculation region 40.

38. 发明专利

JPS60238619A HEAT SHIELDING COATING STRUCTURE FOR BURNER 失效
公开(公告)号：JPS60238619A
公开(公告)日：1985-11-27
申请号：JP9445984
申请日：1984-05-14
申请人： HITACHI LTD
发明人： TSUKAHARA SATOSHI , HAYASHI NORIYUKI
IPC分类号： F23R3/08 , F23R3/00 , F23R3/06 , F23R3/42
摘要： PURPOSE:To prevent cooling of a film from being affected by heat shielding coating and to enable decrease of the temperature of a liner wall surface, by a method wherein heat insulation coating is applied on a liner metal wall except a portion which is located on the downstream side of an injection nozzle for filmy air and extends a distance being 2 times as long as the height of an injection nozzle for filmy air. CONSTITUTION:A portion, extending by a distance l from the forward end of a lip 2 having film cooling structure, is prevented from being coated with a seal material 6. Coating is effected such that a spray nozzle 9 for a coating material is directed in a direction extending orthogonal to that of a liner wall surface 1, and this causes formation of a coated layer 5. From a point of view that the flow of a cooling air is uniformized, a contraction part and an expansion part formed right after the forward end of a lip may be prevented from formation, and heat shielding coating may be applied withing a range of a ratio of l/S being 2 or more. Thus, if a device is structured such that no heat shielding coating is applied within a range of a ratio of l/S being 2 or less, no effect by heat shielding coating is prevented from being exercised on cooling of a film, and this enables to display heat shielding properties being intrinsic in heat shielding coating.

39. 发明专利

JPS60185024A GAS TURBINE COMBUSTOR 失效
公开(公告)号：JPS60185024A
公开(公告)日：1985-09-20
申请号：JP3857884
申请日：1984-03-02
申请人： HITACHI LTD
发明人： HAYASHI NORIYUKI , TSUKAHARA SATOSHI , SATOU ISAO
IPC分类号： F23R3/34 , F23C99/00 , F23R3/26
摘要： PURPOSE:To contrive a reduction of NOx, by so constituting the titled combustor that mixing of fuel with a large quantity of air in an early stage wherein combustion is being progressed and low-temperature combustion is performed always under a diluted state of the fuel, at the time of a partial load and a rated load. CONSTITUTION:As a fuel flow at the time of no load on a gas turbine is few to the extent of about a quater of that at the time of a rated load, a quantity of air corresponding to a logical quantity of the air can be secured with only the air 9a flowing in through an air hole 7a provided on a liner cap 21. Then at the time of no load wherein the fuel flow is few, stabilized combustion can be made to perform under such state. Next to the above matter, to reduce NOx under a state of a combustor from the time of a partial load to that of the rated load, an excess air ratio at a combustion sphere shall be made so as not to become close to 1. As air holes 7 provided on an inner cylinder 4 and a linear cap 21 are arranged in an axial direction, the lower the air flows downstream, the more the air flow becomes. Then to constitute the titled combustor so as to become the excess air ratios at respective positions in the axial direction of the inside of the inner cylinder 4 more than 1.1, it is good to supply fuel 8 in a dispersed state in order from injection ports 20 at an upstream side.

40. 发明专利

JPS606444B2 失效
公开(公告)号：JPS606444B2
公开(公告)日：1985-02-18
申请号：JP15180877
申请日：1977-12-19
申请人： HITACHI LTD
发明人： TSUKAHARA SATOSHI , AKATSU YASUAKI , NAKAMURA SHOZO , SUGITA NARIHISA , SAKAGUCHI HARUICHIRO , KURODA MICHIO , KANEKO KOJIRO
IPC分类号： F22B3/02

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