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1. 发明专利

JPH08200679A METHOD FOR OPERATING GAS TURBINE COMBUSTION DEVICE 失效
公开(公告)号：JPH08200679A
公开(公告)日：1996-08-06
申请号：JP868895
申请日：1995-01-24
申请人： HITACHI LTD
发明人： KOGANEZAWA TOMOKI , ISHIBASHI YOJI , INOUE HIROSHI , YOSHIDA SHOHEI , AKATSU SHIGEYUKI
IPC分类号： F02C9/48 , F23R3/28 , F23R3/32 , F23R3/34
摘要： PURPOSE: To realize low NOX by a method wherein an operation is carried out with a dispersion type pilot burner from an activation of a gas turbine to a condition of about rated number of rotation in no-loaded state, the operation is adapted to an increased load during the operation by the dispersion pilot burner and a second premixing burner, and also a first premixing burner is added in a high load region. CONSTITUTION: Under a condition ranging from an energization of a gas turbine to about a rated number of rotation in non-load condition, fuel is passed to a dispersion pilot burner fuel system 203 and an operation is carried out with the dispersion pilot burner 8. Then, under a predetermined load, a fuel flow rate in a second premixing burner fuel system 202 is increased while a fuel flow rate of the dispersion pilot burner fuel system 203 is being decreased and for a subsequent increased load, flow rates in both fuel systems 202, 203 are increased and then the operation is performed with the dispersion pilot burner 8 and the second premixing burner 12. In addition, in a high load region, fuel is also supplied to the first premixing burner fuel system 201 and also the first premixing burner 9 is added to the operation.

2. 发明专利

JPH08135969A AIR FLOW RATE REGULATOR FOR GAS TURBINE COMBUSTOR 失效
公开(公告)号：JPH08135969A
公开(公告)日：1996-05-31
申请号：JP27351694
申请日：1994-11-08
申请人： HITACHI LTD
发明人： YOSHIDA SHOHEI , IWAI KAZUMI , ISHIBASHI YOJI , INOUE HIROSHI , AKATSU SHIGEYUKI , KOGANEZAWA TOMOKI
IPC分类号： F02C9/16 , F23R3/26 , F23R3/30
摘要： PURPOSE: To provide a gas turbine combustor, permitting reduction of NOx, by a method wherein combustion air is supplied into a premixing device without disturbing the flow of combustion air in the premixing device to retain the mixing ratio of fuel to air in combustion zone so as to be uniform regardless of the flow rate of combustion air. CONSTITUTION: A flow regulating ring 18, having lattice type slits for dividing the flow passage of air which flows into a premixing device 15, is arranged at the combustion air intake unit 19 of the premixing device 15. A lid body, covering the flow regulating ring 18, or an air flow rate regulating valve 20, having a cylindrical shape and provided with lattice type slits, is arranged at the outer periphery of the flow regulating ring 18. The air flow rate regulating valve 20 is moved into the axial direction of a gas turbine combustor whereby the opening area of the flow regulating ring 18 is regulated and the flow rate of air, which flows into the premixing device 15, can be controlled.

3. 发明专利

JPH07332113A GAS TURBINE AND GAS TURBINE COMBUSTOR 失效
公开(公告)号：JPH07332113A
公开(公告)日：1995-12-22
申请号：JP12348494
申请日：1994-06-06
申请人： HITACHI LTD
发明人： HAYASHI NORIYUKI , ISHIBASHI YOJI , IWAI KAZUMI , KOBAYASHI SHIGEYOSHI , AKATSU SHIGEYUKI
IPC分类号： F02C7/20 , F23R3/06
摘要： PURPOSE:To provide a gas turbine and a gas turbine combustor, where a quantity of cooling air flowing in the connected portion between a combustor liner and a tail cylinder is reduced and the ends of a plate spring and the combustor liner are sufficiently cooled. CONSTITUTION:An excellently heat conductive projection group or a favolably heat conductive projecting plate 10 having one end fixed to, e.g. the outer wall surface of a combustor liner 1 and the other end projected into a gap defined in an engaged portion between the combustor liner 1 and a tail cylinder 4 in such a manner as not to be brought into contact with a plate spring 8 or the tail cylinder 4 is housed inside the gap in the engaged portion and in a portion of the combustor liner 1 inside of a plate spring 8 or in a portion adjacent to the plate spring 8.

4. 发明专利

JPH03255815A LOW NOX GAS TURBINE COMBUSTOR 失效
公开(公告)号：JPH03255815A
公开(公告)日：1991-11-14
申请号：JP4928590
申请日：1990-03-02
申请人： HITACHI LTD
发明人： ISHIBASHI YOJI , OMORI TAKASHI , AKATSU SHIGEYUKI , KATO FUMIO , INOUE HIROSHI , KURODA MICHIO , AZUHATA SHIGERU , YOKOTA OSAMU
IPC分类号： F23R3/30 , F23R3/34
摘要： PURPOSE:To cool the interior of a flame holder to improve flame holding performance by fixing a flame holder of obtuse shape near the exit of premixed gas in a radial direction of a combustion cylinder and inserting an insertion tube with an opening on the side of an air passage on the side of the outer periphery of the combustion cylinder into the flame holder. CONSTITUTION:In a second-stage combustion cylinder 10, a cylindrical flame holder 12 is provided through the wall of the cylinder 10 by means of a flange 15 immediately downstream of the outlet section of premixed gas, in which the holder 12 has a length nearly equal to the width of an annular outlet passage of a premixing device and its inner peripheral end is open to a combustion chamber and an insertion tube 13 having an opening on the side of air of the cylinder 10 and having thereon a plurality of air blowoff holes 14 is fixed to the interior of the holder 12. In this manner, the premixed gas forms a low velocity flow region partially accompanying reverse flows downstream of the holder and is ignited, whereby the premixed gas as a whole is burned stably. And cooling air for the holder, as a flow 103 of the inlet of the tube and an impinging jet flow 103' from the holes 14, cools the inner surface of the holder, flows through the annular section between the holder 12 and tube 13 and flows out of the end of the holder as a flow 104.

5. 发明专利

JPH02309124A COMBUSTOR AND OPERATING METHOD THEREOF 失效
公开(公告)号：JPH02309124A
公开(公告)日：1990-12-25
申请号：JP12885189
申请日：1989-05-24
申请人： HITACHI LTD
发明人： OMORI TAKASHI , ISHIBASHI YOJI , INOUE HIROSHI , KATO FUMIO , HASHIMOTO TAKASHI , AKATSU SHIGEYUKI , KURODA MICHIO , KIRIKAMI SEIICHI
IPC分类号： F23R3/30 , F23C99/00 , F23R3/34
摘要： PURPOSE:To prevent discharge of CO and other from an unburnt gas combustor by a construction wherein a premixed gas supply means located on one side of a combustion cylinder is formed of a first premixed gas supply means disposed concentrically with the combustion cylinder and operating in a high-load zone of the combustor and of a second premixed gas supply means disposed in the outer peripheral part of said means and operating in a low-load zone. CONSTITUTION:A premixing chamber 4 (for supplying a second premixed gas) is provided in the center of the head of an inner cylinder 2, and a first-stage premixing burner 8, i.e. a first premixing gas supply means, is provided on the outer periphery of said premixing chamber, that is, in the vicinity of the inner wall surface of the inner cylinder. When combustion is started, an ignition plug 14 is operated, while a fuel 12 is jetted from an auxiliary burner 13, and thereby a flame is formed in a recessed part 11. Next, a fuel 6 premixed in a first stage is made to flow in a prescribed amount and an inflammable mixture is formed thereof and jetted from the premixing burner 8. In high-load combustion, moreover, a fuel 18 premixed in a second stage is introduced into a combustion nozzle 16 of the premixing chamber 4 and an inflammable mixture is supplied into a combustion chamber 5. According to this constitution, production of an unburnt component, i.e. CO, can be prevented satisfactorily.

6. 发明专利

JPS6152523A Gas turbine combustor 失效
标题翻译：气体涡轮搅拌机
公开(公告)号：JPS6152523A
公开(公告)日：1986-03-15
申请号：JP17329684
申请日：1984-08-22
申请人： Hitachi Ltd
发明人： ISHIBASHI YOJI , SATO ISAO , KURODA MICHIO , UCHIYAMA YOSHIHIRO , WADA KATSUO , IIZUKA NOBUYUKI , KATO FUMIO , SEGAWA YORIHIDE , OMORI TAKASHI , AKATSU SHIGEYUKI
IPC分类号： F02C9/50 , F02C9/28 , F23R3/26
CPC分类号： F23R3/26
摘要： PURPOSE:To make it possible to display an excellent combustion performance and to reduce exhaustion of harmful substances in the entire operation including the ignition for starting the gas turbine and the changeover of the fuel by making variable first- stage combustion air and second-stage combustion air. CONSTITUTION:A combustor 51 is provided on its upstream side with a first stage combustion chamber A and on its downstream side with a second-stage combustion chamber B. The first-stage combustion chamber B is formed by a first-stage combustion cylinder 1 having a plurality of combustion air ports 2 around its peripheral wall and an annular space formed by inserting an inner cylindrical cone 5 on the substantially same axis as the first stage combustion cylinder 1. The second stage combustion chamber B opens a second stage combustion air flowpath consisting of an inner peripheral ring 9, an outer peripheral ring 8 and a turning vane 7, on the outer peripheral side of a donwstream end portion of the first stage combustion cylinder 1, and is formed as a space encircled by a second stage combustion cylinder 12 provided on the outside of the outer peripheral ring 8. A slide ring 16 is moved axially of the burner by a link mechanism whereby it is possible to make variable the variable opening areas of the first and second stages. Hence, while excellently maintaining combustion, the changeover of the combustion can be carried out.
摘要翻译：目的：通过制造可变的第一级燃烧空气和第二级燃烧，可以显示出优异的燃烧性能和减少包括用于启动燃气轮机的点火和燃料转换的整个操作中的有害物质的耗尽空气。构成：燃烧器51在其上游侧设置有第一级燃烧室A，在其下游侧设置有第二级燃烧室B.第一级燃烧室B由具有第一级燃烧室围绕其周壁的多个燃烧空气端口2和通过将内圆柱形锥体5插入在与第一级燃烧气缸1基本相同的轴线上而形成的环形空间。第二级燃烧室B打开第二级燃烧空气流路，其包括在第一级燃烧气缸1的不同侧端部的外周侧设置有内周环9，外周环8和转动叶片7，并且形成为由第二级燃烧筒12包围的空间设置在外周环8的外侧。滑环16通过连杆机构沿燃烧器的轴向移动，由此可以使变量开放第一和第二阶段的区域。因此，在极好地保持燃烧的同时，能够进行燃烧的切换。

7. 发明专利

JPS6134322A Low environmental-pollution type gas turbine 失效
标题翻译：低环境污染类型气体涡轮机
公开(公告)号：JPS6134322A
公开(公告)日：1986-02-18
申请号：JP15519784
申请日：1984-07-27
申请人： Hitachi Ltd
发明人： SATO ISAO , ISHIBASHI YOJI , OMORI TAKASHI , AKATSU SHIGEYUKI , WADA KATSUO , KATO FUMIO , SEGAWA YORIHIDE , UCHIYAMA YOSHIHIRO , KURODA MICHIO
IPC分类号： B01D53/94 , F01N3/00 , F01N3/08 , F02C7/057 , F02C9/18 , F02C9/50
CPC分类号： F02C9/50
摘要： PURPOSE:To improve the efficiency of denitration which is performed by use of catalyst when a gas turbine is operated under low load by reducing quantity of air which flows into a combustor at the time of low load of the gas turbine. CONSTITUTION:In an equipment wherein a denitration catalyst layer 5 is disposed in an exhaust gas passage running from a gas turbine 3, a flow rate controller 9 is provided in an air inflow passage which extends to a compressor 1. Flow rate of air which is to flow into a combustor 2 when the gas turbine 3 is opereted under low load is reduced by sai controller 9. Exhaust gas is restrained from excessive reduction in temperature, whereby improving the denitration effifiency of the catalyst.
摘要翻译：目的：通过在燃气轮机低负载时减少流入燃烧器的空气量，提高燃气轮机在低负载下运行时使用催化剂进行脱硝效率。构成：在从燃气轮机3排出的废气通道中配置有脱硝催化剂层5的设备中，在空气流入通路中设置有流量控制器9，该空气流入通路延伸到压缩机1，当通过控制器9减少燃气轮机3在低负荷下运转时，流入燃烧器2中。排气被抑制在过度的温度降低之下，从而提高催化剂的脱硝效率。

8. 发明专利

JPS6122127A Gas turbine combustor 失效
标题翻译：气体涡轮搅拌机
公开(公告)号：JPS6122127A
公开(公告)日：1986-01-30
申请号：JP14385284
申请日：1984-07-10
申请人： Hitachi Ltd
发明人： KURODA MICHIO , SATOU ISAO , ISHIBASHI YOUJI , UCHIYAMA YOSHIHIRO , OOMORI TAKASHI , AKATSU SHIGEYUKI , KATOU FUMIO , SEGAWA YORIHIDE , WADA KATSUO , IIZUKA NOBUYUKI
IPC分类号： F23R3/30 , F23R3/02 , F23R3/06 , F23R3/14 , F23R3/34
CPC分类号： F23R3/14
摘要： PURPOSE:To make a substantial reduction of NOx by a method wherein a method for dispersing fuel which does not form a local hot temperature combustion part is employed and a mixing space for fuel and air is reduced. CONSTITUTION:Since a fuel injection part 22 is positioned at a location near the side wall of a top end combustion chamber 11, a fast mixing with air stream 28 is performed at air holes 19a, 19b, 19c and 19d, and a cooling with the air at the initial stage of combustion can be performed, so that an occurrence of hot spot can be restricted. A length of an inner core 13 is made shorter than a top combustion chamber 11, and even if an acceleration of combustion gas is generated from the extremity end of the cone to the outlet port of the top combustion chamber, it may have a volume which is endurable against a rapid expansion of the ignited gas. A pressor member 38 forming a second stage combustion air passage and a nozzle flange 39 are connected to keep the positions of the circulating vanes 37 and the nozzle injection ports 35 at their specified positions, so that even if the gas turbine is operated for long hours and a uniform mixing of second stage fuel and air can always be promoted. With the foregoing, the fuel is dispersed to cause a uniform mixing of fuel and air to be performed and an excessive air combustion with low air temperature is carried out and then a substantial reduction of NOx can be attained.
摘要翻译：目的：通过采用分散不形成局部热温燃烧部分的燃料的方法，减少燃料和空气的混合空间的方法，大幅度地减少NOx。构成：由于燃料喷射部22位于靠近顶端燃烧室11的侧壁的位置，因此在气孔19a，19b，19c，19d进行与气流28的快速混合，可以在燃烧的初始阶段执行空气，从而可以限制热点的发生。内芯13的长度比顶部燃烧室11短，即使从锥体的末端到顶部燃烧室的出口产生燃烧气体的加速度，也可以具有对于点燃气体的快速膨胀是可以耐受的。连接形成第二级燃烧空气通路的加压部件38和喷嘴凸缘39，将循环叶片37和喷嘴喷射口35的位置保持在规定位置，使得即使燃气轮机长时间运转总是可以促进第二级燃料和空气的均匀混合。如上所述，燃料被分散以使燃料和空气的均匀混合进行，并且进行低空气温度的过度空气燃烧，然后可以实现大量的NOx还原。

9. 发明专利

JPS6017633A AIR CONTROL DEVICE FOR BURNER 失效
公开(公告)号：JPS6017633A
公开(公告)日：1985-01-29
申请号：JP12335983
申请日：1983-07-08
申请人： HITACHI LTD
发明人： KATOU FUMIO , ISHIBASHI YOUJI , OOMORI TAKASHI , SATOU ISAO , HAYASHI NORIYUKI , AKATSU SHIGEYUKI
IPC分类号： F02C9/34 , F23R3/26 , F23R3/34
摘要： PURPOSE:To restrict the amount of combustion per one piece of fuel nozzle and suppress the discharging amount of NOx by effecting diffusion combustion system upon low load to contrive the dispersion of fuel. CONSTITUTION:The opening degree of an annular plate 17 is suppressed to a small value to set the amount of air to a value near a logical rate of excess air. Combustion, caused by a pilot flame from the tip end of a cone 10, is regulated so as to be about 10-20% of the total fuel upon low load and the optimum amount of air, with respect to the fuel ratio, is supplied by regulating the opening degree of a disc 20. Upon the high load of a turbine, air inflow into a combustion chamber is increased, holding of flame near the nozzle becomes impossible, the combustion chamber functions as the pre-mixing zone of the fuel and pre-mixing combustion, in which the combustion is initiated from the downstream side of the combustion chamber 31 near a place whereat the pilot flame is formed, is promoted. Flame keeping may be compensated by forming the pilot flame of sufficient strength at the tip end of the cone.

10. 发明专利

JPS5979006A Air cooling blade of gas turbine 失效
标题翻译：气体涡轮空气冷却叶片
公开(公告)号：JPS5979006A
公开(公告)日：1984-05-08
申请号：JP18757882
申请日：1982-10-27
申请人： Hitachi Ltd
发明人： MATSUMOTO MANABU , KOBAYASHI SHIGEYOSHI , SHIZUTANI MITSUTAKA , AKATSU SHIGEYUKI , KAWAIKE KAZUHIKO
IPC分类号： F01D5/18 , F01D11/02
CPC分类号： F01D5/187
摘要： PURPOSE:To make it possible to utilize as sealing air the air which has been used for cooling the turbine bucket by a method wherein a cooling air passage in the turbine bucket is made to open in an intermediate chamber between the rotor and the operating gas passage. CONSTITUTION:The outlet port 72 of the cooling air passage 71 in the bucket of the movable blade 7 is made to open in a shank chamber 37 formed within the shank of the blade 7 and a flowout hole 73 is provided underside a sealing fin 55 on the side wall 35 of the shank so as to open in the intermediate chamber 52. Thus, the cooling air passed through the cooling air passage 71 is flowed into the intermediate chamber 52 from the flowout hole 73 so that it is reused as sealing air for the prevention of the flowing out of the operating gas and as leak air for labyrinth sealing.
摘要翻译：目的：为了能够利用用于冷却涡轮机叶片的空气，其中通过使涡轮机叶片中的冷却空气通道在转子和操作气体通道之间的中间室中打开的方法。构成：可动刀片7的铲斗中的冷却空气通道71的出口72在形成在刀片7的柄部内的柄室37中开口，并且在密封翅片55的下侧设置有流出孔73 通过冷却空气通道71的冷却空气从流出孔73流入中间室52，以便再次用作密封空气防止工作气体流出，以及作为迷宫密封的泄漏空气。

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