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71. 发明专利

JPH0678937B2 失效
公开(公告)号：JPH0678937B2
公开(公告)日：1994-10-05
申请号：JP29673886
申请日：1986-12-15
申请人： HITACHI LTD
发明人： KATO FUMIO , ISHIBASHI YOJI , AKATSU SHIGEYUKI , OOMORI TAKASHI , SEGAWA YORIHIDE , SATO ISAO
IPC分类号： F23M11/04 , F23R3/42 , G01J1/02

72. 发明专利

JPH0579630A GAS TURBINE COMBUSTION MACHINE AND OPERATION THEREOF 失效
公开(公告)号：JPH0579630A
公开(公告)日：1993-03-30
申请号：JP24387591
申请日：1991-09-25
申请人： HITACHI LTD
发明人： OMORI TAKASHI , IWAI KAZUMI , HAYASHI NORIYUKI , KATO FUMIO , AKATSU SHIGEYUKI
IPC分类号： F02C9/34 , F23R3/30 , F23R3/34
摘要： PURPOSE:To provide a structure of a combustion machine and its operating method in which a pre-mixing combustion technology for a high temperature of a gas turbine combustion device and low NOx can be developed and in particular a stable pre-mixing combustion in a gas turbine operating range and a lean gas combustion for getting a low NOx can be stably carried out. CONSTITUTION:A combustion device is comprised of a pre-mixing burner 4 at a head part of a combustion chamber 29, an auxiliary burner 5 at its central axis and a bypassing mechanism cooperating with an inner flow rate adjusting ring 21 to cause air at the pre-mixing burner to be variable. During a period ranging from a starting of ignition to non-loading state, a partial dispersing combustion condition is carried out with excessive fuel for an amount of air at the auxiliary burner 5, a fuel control is carried out to perform an instantaneous lean pre-mixing combustion at the time of feeding fuel to the pre-mixing burner 4 under no load and the lean mixing combustion is continued under a fuel-air ratio control operation of the pre-mixing burner 4 when the load is increased so as to realize a low NOx state. With such an arrangement, the fuel-air ratio control operation for the pre-mixing combustion becomes easy.

73. 发明专利

JPH03207917A GAS TURBINE COMBUSTION DEVICE 失效
公开(公告)号：JPH03207917A
公开(公告)日：1991-09-11
申请号：JP51790
申请日：1990-01-08
申请人： HITACHI LTD
发明人： ISHIBASHI YOJI , KATO FUMIO , INOUE HIROSHI , OMORI TAKASHI , AKATSU SHIGEYUKI , YOKOTA OSAMU , KURODA MICHIO , IIZUKA NOBUYUKI
IPC分类号： F02C9/28 , F23C99/00 , F23R3/30 , F23R3/34
摘要： PURPOSE:To restrain a sharp increase in NOX at change-over of combustion state by a method wherein a fuel nozzle is arranged at the center of a first stage combustion chamber, an air rotating device is concentrically arranged around the periphery, and fuel is supplied at a position in the first stage combustion chamber which is downstream an air back-flow region formed in the first stage combustion chamber. CONSTITUTION:First stage fuel 201 is supplied into a combustion chamber through a first stage flame stabilizing nozzle 24, and ignited at an air back-flow region which is formed in a first combustion drum by flame stabilizing air 106 supplied from a rotating device 2, so that a stable flame is formed. To achieve a complete combustion and a low NOS generation, excess air is fed from first stage combustion air nozzles 20 and a clearance between an auxiliary fuel nozzle 25 and the combustion drum wall. The first stage fuel 201 is rapidly decreased and second stage fuel 203 is increased fast so that a diffusion combustion takes place in the first stage combustion drum and pre-mix combustion in the second combustion drum. The fuel 201 is decreased and the corresponding amount of fuel is supplied from the auxiliary fuel nozzle 25. And finally, the fuel 201 is stopped and pre-mix combustion is carried out in both first and second combustion drums. Thereby, a low NOX combustion can be achieved.

74. 发明专利

JPH03181712A GAS TURBINE COMBUSTOR 失效
公开(公告)号：JPH03181712A
公开(公告)日：1991-08-07
申请号：JP31750289
申请日：1989-12-08
申请人： HITACHI LTD
发明人： OMORI TAKASHI , ISHIBASHI YOJI , INOUE HIROSHI , KATO FUMIO , AKATSU SHIGEYUKI , YOKOTA OSAMU , HASHIMOTO TAKASHI
IPC分类号： F23R3/18 , F23R3/20 , F23R3/34
摘要： PURPOSE:To permit a stabilized pre-mixing combustion to be achieved even in a high-speed operating condition on a lean side advantageous in the reduction of NOx emission by a method wherein a combustion nozzle is provided on the upstream end of each of the flow passage parts with rectangular cross section divided by the swirl vanes of a second stage pre-mixing swirler and flame holding plates are provided at several places in a gang of small injection orifices formed by extending the flow passage parts in order to attain a pre-mixing combustion. CONSTITUTION:A pre-mixing chamber 4 and a main combustion chamber 5 larger in diameter than the pre-combustion chamber 4 are provided at the head of an inner cylinder 2. The pre-combustion chamber 4 is provided in its central part with an inner cylinder cone 6 projecting from its head and with pipe-like first stage fuel nozzle 7 having fuel injection orifices projecting into the annular hollow part of the cylinder cone and arranged circumferentially. A pre-mixing swirler 8 is also provided at the pre-combustion chamber 4 and an enlarged part of the main combustion chamber 5 and a second stage pre-mixing fuel nozzle 11 is provided on the upstream side of each of the flow passage parts 10 divided by swirl vanes 9. Flame holding plates 12 are provided near small injection orifice passage outlets divided by the swirl vanes 9 of the pre-mixing swirler 8.

75. 发明专利

JPH02267419A GAS TURBINE COMBUSTOR 失效
公开(公告)号：JPH02267419A
公开(公告)日：1990-11-01
申请号：JP8793889
申请日：1989-04-10
申请人： HITACHI LTD
发明人： INOUE HIROSHI , ISHIBASHI YOJI , AKATSU SHIGEYUKI , OMORI TAKASHI , KATO FUMIO , HASHIMOTO TAKASHI , KURODA MICHIO
IPC分类号： F23R3/30 , F23C99/00
摘要： PURPOSE:To always obtain uniform premixed gas regardless of the slide valve opening by displacing the inlet opening for the premixing flow passage from its center so that there may be a swirl component of the flow in the premixing flow passage. CONSTITUTION:Part of air flowing through the space between the combustor casing 3 and the combustor liner 5 enters from the premixing passage air inlet opening 20 into the premixing swirler 6, and, after being mixed with fuel 11 ejected from the fuel nozzle 12, is ejected into the combustion chamber 8, where it goes through the premixture burning. By radially displacing the premixing passage air inlet opening 20 from the center of the flow passage, a swirl component can be generated in the air flow in the flow passage. Because the air flow in the premixing flow passage possesses a swirl component by this constitution regardless of the opening of the slide valve 15, the mixing of fuel and air can be enhanced, and so, the uniformity of premixed gas can be maintained, preventing the emission of carbon monoxide and assuring a stable premixture burning in a wide range.

76. 发明专利

JPS6325522A TEMPERATURE MEASUREMENT BY ANTI-STOKES RAMAN SPECTROSCOPY 失效
公开(公告)号：JPS6325522A
公开(公告)日：1988-02-03
申请号：JP16795786
申请日：1986-07-18
申请人： HITACHI LTD
发明人： KATO FUMIO , ISHIBASHI YOJI , SATO ISAO , OMORI TAKASHI , AKATSU SHIGEYUKI
IPC分类号： G01K11/00 , G01J3/44 , G01J5/00 , G01J5/58 , G01N21/64 , G01N21/65
摘要： PURPOSE:To obtain a handy and effective optical meter, by making two first beams cross each other in a measuring area as separated in stead of overlapping them. CONSTITUTION:The temperature of a combustion flame is measured by anti- Stokes Ramans method. At this point, laser lights with two different kinds of frequencies, omega1 and omega2 (omega1>omega2) produced to irradiate non-measuring material are supplied from a YAG laser 1 and a dye laser 2. These lights are transmitted through independent optical paths to a measuring position without being mixed together while being partially cut off with beam stops 10 and 11 but the cut faces thereof are made to oppose each other with a dichroic mirror 16 while the lights are sent to a convex lens 17 as two parallel beams close to each other. The two beams are so arranged to cross each other in a combustion cylinder 18 and after checked for the generation of an anti-Stokes light, the interval thereof is adjusted by moving a prism 9. Thereafter, the two beams are removed with a dichroic mirror 20 and thus, the anti-Stokes light is converted into an electrical signal with a photodetector through a spectroscope 23.

77. 发明专利

JPS6277520A LOW NOX GAS TURBINE COMBUSTOR 失效
公开(公告)号：JPS6277520A
公开(公告)日：1987-04-09
申请号：JP21487285
申请日：1985-09-30
申请人： HITACHI LTD
发明人： ISHIBASHI YOJI , SATO ISAO , AKATSU SHIGEYUKI , UCHIYAMA YOSHIHIRO , IIZUKA NOBUYUKI , WADA KATSUO
IPC分类号： F23R3/04 , F23R3/28 , F23R3/34
摘要： PURPOSE:To achieve the low production of NOx in a gas turbine combustor by making the location of fuel injection variable in accordance with the fuel flow rate and regulating the distribution of the combustible mixture gas concentration and supplying the mixture gas into a combustion chamber. CONSTITUTION:Of compressed air 101 rarefied air 102 from a rarefied air opening 10, a second stage combustion air from a combustion air passage 9 and the rest of the compressed air as first stage combustion air 105, 105', and 106 are supplied into a first stage combustion section 2'. On the other hand the fuel is distributed and supplied by means of a fuel distributor 34 to first stage fuel 22, supplementary second stage fuel 23 and main second stage fuel 24 respectively. The fuel flow rate and the ratio of the fuel distribution are determined by a fuel control signal 300 beforehand set up according to the output of a gas turbine. Ignition and low output of the gas turbine is performed only by the supply of the first stage fuel, and when the turbine is on the side of high output which includes the rated output, it is run by the supply of the second stage fuel. The second stage fuel is a sufficiently uniform mixture with air and burns at a uniform flame temperature, developing further lower NOx combustion.

78. 发明专利

JPS6122106A Gas turbine conbustor 失效
标题翻译：燃气轮机
公开(公告)号：JPS6122106A
公开(公告)日：1986-01-30
申请号：JP14385184
申请日：1984-07-10
申请人： Hitachi Ltd
发明人： KURODA MICHIO , OOMORI TAKASHI , ISHIBASHI YOUJI , SATOU ISAO , UCHIYAMA YOSHIHIRO , KATOU FUMIO , SEGAWA YORIHIDE , AKATSU SHIGEYUKI , WADA KATSUO , IIZUKA NOBUYUKI
IPC分类号： F23R3/14 , F23C99/00 , F23R3/32
摘要： PURPOSE: To permit to keep a flame effectively and effect the lower NOx combustion in a combustion chamber at the head of a combustor by a method wherein fuel is injected at the position of an eddy flow area of head of the combustion chamber and after the air jetting portion from the outer wall of inner cylinder of the combustion chamber.
CONSTITUTION: At first, the air 16 is introduced into the gap between an outer cylinder 1 and the inner cylinder 5 of a combustor, then, the air 10a, 11a, 12a, 13a, 14a, is introduced into a combustion chamber from the group of air leading holes which are provided at the wall surface of the inner cylinder 5, an inner cylinder cap 8 and inner cylinder cone 6. On the other hand, fuel 17 is fed to fuel injecting pipes 4a, 4b from the main body 3 of a fuel nozzle and injected into the annular combustion chamber 9 of an inner cylinder head from the nozzle 15 provided on each fuel injection pipe, then, igniting combustion is continued by the operation of a spark plug. According to this method, in the annular space forming the head combustion chamber, the fuel is injected effectively into the eddy flow and jet stream formed by the flowing air from the combustion head and annular inner cylinder side, therefore, the stable and low NOx combustion may be obtained by the combination of flame keeping under relatively lean condition and the fuel injection in the more leaned area.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：允许有效地保持火焰，并通过燃料喷射在燃烧室的头部的涡流区域的位置并在空气之后的方式在燃烧室的头部的燃烧室中产生较低的NOx燃烧从燃烧室的内筒的外壁喷射部分。构成：首先，将空气16引入到外筒1和燃烧器的内筒5之间的间隙中，然后将空气10a，11a，12a，13a，14a从组中引入燃烧室设置在内筒5的壁面的空气引导孔，内筒盖8和内筒6。另一方面，燃料17从主体3的燃料喷射管4a，4b供给到燃料喷嘴，并从设置在每个燃料喷射管上的喷嘴15喷射到内筒体的环状燃烧室9中，然后通过火花塞的操作继续燃烧。根据该方法，在形成头部燃烧室的环形空间中，燃料被有效地注入由来自燃烧头和环形内筒侧的流动空气形成的涡流和喷流中，因此，稳定且低的NOx燃烧可以通过在相对稀薄的条件下的火焰保持和更倾斜的区域中的燃料喷射的组合来获得。

79. 发明专利

JPS6091141A LOW NOX GAS TURBINE BURNER 失效
公开(公告)号：JPS6091141A
公开(公告)日：1985-05-22
申请号：JP19903183
申请日：1983-10-26
申请人： HITACHI LTD
发明人： SATOU ISAO , ISHIBASHI YOUJI , UCHIYAMA YOSHIHIRO , OOMORI TAKASHI , KATOU FUMIO , HAYASHI NORIYUKI , KURODA MICHIO , AKATSU SHIGEYUKI
IPC分类号： F23R3/26
摘要： PURPOSE:To suppress CH and HC from generating in the operating range of a gas turbine by controlling premixture air flow rate supplied from second stage by the flow rate of the second stage supply fuel flow rate slways to become slightly excessive air flow rate, thereby reducing NOx in the exhaust gas. CONSTITUTION:The secondary air turning supplying hole 27 for branching and supplying air from a compressor to a main combustor are provided in two systems. A valve 30 for regulating the flow rate of air 29 so as to become the flow rate of slightly excess air always to the fuel 28 supplied to the main combustion chamber 12 from the second stage is provided. The air regulated in the flow rate is collected to an air reservoir 31, and supplied from the hole 27 to the chamber 12, fuel 32 is supplied into the turning air flow, and introduced as a premixture fuel with the secondary air 29 is regulated by a flow rate control valve 30 at the flow rate with the secondary fuel 32 so that the excess air ratio (lambda) becomes 1.2-1.8 as the slightly air excess.

80. 发明专利

JPS5857565A CLEARANCE SEAL FOR ROTARY MACHINE 失效
公开(公告)号：JPS5857565A
公开(公告)日：1983-04-05
申请号：JP15368081
申请日：1981-09-30
申请人： HITACHI LTD
发明人： SHIZUTANI MITSUTAKA , KOBAYASHI SHIGEYOSHI , MATSUMOTO MANABU , AKATSU SHIGEYUKI
IPC分类号： F16J15/447 , F16J15/44
摘要： PURPOSE:To obtain favourable sealing effect between a rotary body and a stationary body without having any restriction in assembling, by providing a large number of seal fin rows of the rotary body on an annular block which is movable through centrifugal force. CONSTITUTION:Seal fins 10 of a rotary body side are provided on an annular and movable block 10 provided on the side 3' of a rotary body and ordinary seal fins 7 are provided on the side 6' of a stationary body. Appropriate gaps on the tips of the seal fins 16 and 7 of the respective rotary body and stationary body are kept so that there is no hindrance in assembling as the movable block 10 is in a withdrawn state toward the rotary body side at the time A of nonrotating. On the one hand, sufficient sealing effect is obtainable, as the movable block 10 is moved obliquely outward through action of centrifugal force and the seal fins 10' and 7 approach and pile up each other. A return spring 11 may well by added so that the movable block 10 is returned reliably at the time of nonrotating.

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