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1. 发明专利

JP2001289441A GAS TURBINE COMBUSTOR 失效
公开(公告)号：JP2001289441A
公开(公告)日：2001-10-19
申请号：JP2000108547
申请日：2000-04-10
申请人： MITSUBISHI HEAVY IND LTD
发明人： ITSURA TETSUO , NISHIDA HIROYUKI , HASHIMURA JUNJI , INADA MITSURU , BANDAI SHIGEMI , AOYAMA KUNIAKI , OCHIAI KEIMEI
IPC分类号： F23R3/16 , F23R3/32 , F23R3/34
摘要： PROBLEM TO BE SOLVED: To prevent a gas turbine combustor from combustion vibration. SOLUTION: A gas turbine combustor 1 comprises a flow guiding partition 113 arranged in a nozzle portion 3, which accommodates therein fuel nozzles 31 and 33 for feeding fuel into an inner cylinder 5 and an adjusting hole 115, which penetrates the flow guiding partition 113 so that a section 3b at the upstream side of the flow guiding partition communicate a with section 3a at the downstream side (inner cylinder side) thereof. As a result, it is possible to change the natural frequency of the combustor alone without changing the total length thereof because the volume of the upstream-side section 3b is added to that of the inner cylinder in which combustion is performed.

2. 发明专利

JP2001141243A FUEL SUPPLYING MECHANISM FOR GAS TURBINE 失效
公开(公告)号：JP2001141243A
公开(公告)日：2001-05-25
申请号：JP31947299
申请日：1999-11-10
申请人： MITSUBISHI HEAVY IND LTD
发明人： OOTA MASATOYO , ITSURA TETSUO , BANDAI SHIGEMI , ARIMURA HISATO
IPC分类号： F23R3/34 , F23R3/28
摘要： PROBLEM TO BE SOLVED: To provide a fuel supplying mechanism for the combustor of a gas turbine which can reduce the used spots of expensive valves and can be actuated inexpensively and suitably, by securing the flow rate of pilot fuel at an appropriate value even when load fluctuation occurs. SOLUTION: Of the top hat fuel supplying route, pilot fuel supplying route, and main fuel supplying route of a fuel supplying mechanism which supplies fuel to a gas turbine, the top hat fuel supplying route is branched from the main fuel supplying route and is constituted by interposing a fixed orifice. Consequently, the required quantity of the fuel supplied from the top hat fuel supplying route can be changed appropriately by only changing the diameter of the fixed orifice. In addition, the cost of the fuel supplying mechanism is reduced by eliminating the need of an expensive valve from the top hat fuel supplying route.

3. 发明专利

JPH09250363A CATALYST COMBUSTION METHOD 失效
公开(公告)号：JPH09250363A
公开(公告)日：1997-09-22
申请号：JP5739796
申请日：1996-03-14
申请人： KANSAI ELECTRIC POWER CO , MITSUBISHI HEAVY IND LTD
发明人： HOTTA ZENJI , YONEDA YOSHITERU , KOZUKI KENJI , TANAKA YOSHIMASA , BANDAI SHIGEMI , ITSURA TETSUO
IPC分类号： F02D45/00 , F02C9/28 , F23C13/00 , F23R3/28 , F23R3/40 , F23C11/00
摘要： PROBLEM TO BE SOLVED: To carry out catalyst combustion of a steady condition in a short time when catalyst combustion is started by supplying fuel having a rate much more than that of the steady condition when catalyst combustion is started. SOLUTION: In a gas turbine and the like, when catalyst combustion is started, a fuel flow rate is increased more than that of a steady condition, and a catalyst temperature and a gas temperature is raised by catalyst reaction rapidly. When the catalyst temperature and the gas temperature exceed a sufficiently high temperature, the fuel flow rate is reduced to a steady condition value, and catalyst reaction is carried out. The catalyst temperature and the gas temperature of a catalyst layer outlet are raised rapidly, and steady catalyst combustion is transferred in a short time. When the catalyst temperature exceeds a set lowest temperature and less in the case where the catalyst temperature is detected and catalyst combustion is continued, the fuel flow rate is increased, the catalyst temperature and the gas temperature are raised, and a condition is transferred to a steady catalyst combustion.

4. 发明专利

JPH06193866A COMBUSTION MONITORING DEVICE 失效
公开(公告)号：JPH06193866A
公开(公告)日：1994-07-15
申请号：JP35737792
申请日：1992-12-24
申请人： MITSUBISHI HEAVY IND LTD
发明人： INADA MITSURU , ITSURA TETSUO , BANDAI SHIGEMI , TANAKA KATSUNORI
IPC分类号： F02C9/00 , F23N5/08 , F23N5/16
摘要： PURPOSE:To provide a combustion monitoring device, capable of detecting correct burning condition even under a condition that the level of a pressure fluctuation is low and a ratio between a signal and noise is inferior and capable of preventing malfunction due to an abnormal signal such as noise and the like when the burning condition is judged by detecting a pressure fluctuation in a gas turbine combustor. CONSTITUTION:A combustion monitoring device is constituted of a pressure sensor 6, provided so as to detect an abnormal pressure fluctuation in a combustor 2, a light sensor 10, provided so as to catch light emitted from combustion flame in the combustor 2, and a correlating device 12, receiving the pressure signal of the pressure sensor 6 and the light signal of the light sensor 10 to judge the correlation of both signals and detect abnormal combustion.

5. 发明专利

JPH06185733A CATALYTIC BURNER FOR GAS TURBINE 失效
公开(公告)号：JPH06185733A
公开(公告)日：1994-07-08
申请号：JP35493192
申请日：1992-12-18
申请人： MITSUBISHI HEAVY IND LTD
发明人： BANDAI SHIGEMI , KAWABATA HITOSHI , ITSURA TETSUO , TANIMURA SATOSHI
IPC分类号： F23R3/40
摘要： PURPOSE:To reduce a pressure loss of a premixed gas flow and to decrease a thermal stress of a catalytic layer by reducing a thickness of the layer without altering a reaction quantity and a burning quantity of the layer. CONSTITUTION:A catalytic burner for a gas turbine in which at least one catalytic layer 2 is disposed at least along an axial direction has the layer 2 which is disposed along the axial direction and has a thickness (t) 30 times or less as large as its catalytic cell size (e.g. 20-30mm in a real size).

6. 发明专利

JPH04136726A MEASURING METHOD FOR TEMPERATURE OF HIGH-TEMPERATURE GAS FLOW 失效
公开(公告)号：JPH04136726A
公开(公告)日：1992-05-11
申请号：JP25684690
申请日：1990-09-28
申请人： MITSUBISHI HEAVY IND LTD
发明人： BANDAI SHIGEMI , ITSURA TETSUO
IPC分类号： G01J5/00 , G01J5/02
摘要： PURPOSE:To measure the temperature of gas reliably and easily by measuring the temperature of the gas by a radiation thermometer through the intermediary of heat-resistant fine powder added. CONSTITUTION:A high-temperature gas flows at a high speed in a duct 1. Heat- resistant fine powder 3 is sent in through a feeder 2 and released from the force end of the feeder 2. The heat-resistant fine powder 3 is let to flow on the high-temperature gas flow and passes an objective spot 6 of measurement. The mass of the heat-resistant fine powder 3 is very small and the heat capacity thereof is also very small. Therefore it is heated immediately to the same tem perature with that of the high-temperature gas at the spot. Radiant rays 7 emitted by this heat-resistant fine powder 3 being a high-temperature solid are observed by a radiation thermometer 4 and the temperature thereof is measured. Thereby the temperature of the high-temperature gas at the pertinent spot, which is the same with the temperature of the heat-resistant fine powder 3, can be measured.

7. 发明专利

JPS63161318A COMBUSTION METHOD FOR COMBUSTOR FOR GAS TURBINE 失效
公开(公告)号：JPS63161318A
公开(公告)日：1988-07-05
申请号：JP30538286
申请日：1986-12-23
申请人： MITSUBISHI HEAVY IND LTD
发明人： BANDAI SHIGEMI , ITSURA TETSUO , FUKUE ICHIRO , AOYAMA KUNIAKI , SATO NOBUO
IPC分类号： F23R3/34
摘要： PURPOSE:To enable reduction in content of NOx and to increase a stable combustion range, by a method wherein a fuel ration of auxiliary fuel to main fuel is decreased, and pilot fuel and main fuel are burnt in the same region. CONSTITUTION:A combustor 104 comprises a pilot fuel nozzle 101, an air flow passage 102, surrounding the pilot fuel nozzle, a main fuel nozzle 103 through which to feed fuel to the air flow passage, and a wall surface cooling structure 105. When the combustion amount is small, fuel is fed only through the pilot fuel nozzle 101, but when the combustion amount is increased, the fuel is also fed through the main fuel nozzle 103. The ratio of pilot fuel to main fuel is gradually decreased, and finally the pilot fuel ratio is reduced to approximate 10% or less. Since the combustor 104 is formed in a simple shape, the wall surface cooling air amount is decreased, and the fuel air amount can be increased. Especially, by reducing the diffusion flame pilot fuel ratio, in which the NOx production amount is increased, to approximate 10% or less, a low NOx level of 50 ppm can be achieved. Since air for combustion to burn the main fuel in the same area can be commonly used, discharge of the unburnt content is small even under a transient state that the pilot fuel is decreased and the main fuel is increased.

8. 发明专利

JP2004361034A Gas turbine conbustor and gas turbine equipment using the same 有权
公开(公告)号：JP2004361034A
公开(公告)日：2004-12-24
申请号：JP2003161867
申请日：2003-06-06
申请人： Mitsubishi Heavy Ind Ltd , 三菱重工業株式会社
发明人： ITSURA TETSUO , IIDA KOZO , YASUTAKE SATONOBU , TANAKA KATSUNORI , NISHIDA KOICHI , BANDAI SHIGEMI
IPC分类号： F23R3/40 , F02C3/34 , F02C6/18 , F23R3/18 , F23R3/30 , F23R3/34
摘要： PROBLEM TO BE SOLVED: To provide a gas turbine combustor achieving lower NOx and CO in a wide load range of a gas turbine, stable operability and lower cost with a highly durable catalyst.
SOLUTION: The gas turbine combustor comprises a catalyst combustion system using a catalyst layer 10 to form pilot flames and a premixing combustion system using a premixing nozzle 5 for performing main combustion. The catalyst layer 10 consists of a low temperature region located on the upstream side of fuel mixture to be supplied to the catalyst layer 10 and a high temperature region located on the downstream side thereof.
COPYRIGHT: (C)2005,JPO&NCIPI

9. 发明专利

JP2002242702A COOLING STRUCTURE FOR WALL SURFACE OF GAS TURBINE COMBUSTOR 失效
公开(公告)号：JP2002242702A
公开(公告)日：2002-08-28
申请号：JP2001037473
申请日：2001-02-14
申请人： MITSUBISHI HEAVY IND LTD
发明人： ITSURA TETSUO , NISHIDA HIROYUKI , KITAMURA TAKESHI , NEGORO MASAAKI
IPC分类号： F02C7/18
摘要： PROBLEM TO BE SOLVED: To prevent local temperature rises of the interior wall of a combustor downstream of a combustor penetrating member. SOLUTION: A structure is provided with a combustor inner-cylinder shell 55 and a cylindrical heat insulating member 155 positioned inside the shell. On a heat insulating member 155D located downstream of the penetrating member 159 penetrating both the shell and the heat insulating member, a line of pin fins 155P is positioned which is composed of columnar protrusions protruding perpendicularly from the downstream outer peripheral part of the penetrating member. Since the line of pin fins 155P has a greater efficiency of heat transfer to and from cooling air than a fin-ring channel 155b provided in the portion 155U of the heat insulating member upstream of the penetrating member, the cooling ability of the heat insulating member increases at the downstream portion of the penetrating member so that, even if a vortex of combustion gas is generated on the wall surface of the heat insulating member downstream of the penetrating member by the presence of the penetrating member and causes a local increase in heat load on the wall surface, local temperature rises of the wall surface of the heat insulating member are prevented.

10. 发明专利

JP2001289010A COMBINED CYCLE GAS TURBINE SYSTEM 失效
公开(公告)号：JP2001289010A
公开(公告)日：2001-10-19
申请号：JP2000108533
申请日：2000-04-10
申请人： MITSUBISHI HEAVY IND LTD
发明人： ITSURA TETSUO , BANDAI SHIGEMI , KOBAYASHI KAZUYA
IPC分类号： F01K23/10 , F02C7/18
摘要： PROBLEM TO BE SOLVED: To improve the output and the efficiency of a combined cycle gas turbine system while restricting the generation of NOX. SOLUTION: A heat exchanger 70 having a heat-transfer pipe 71 passing through the flames 31a, 33a to be generated by a pilot nozzle 31 and a main nozzle 33 is provided inside of a combuster 1 of a gas turbine. Fuel quantity to be supplied from the nozzles 31, 33 is adjusted so that the combustion air excess ratio inside of the combustor becomes about 1.2. Water is fed to the heat exchanger so as to cool the flames to 1600 deg.C or less of flame temperature, and while the heat exchanger generates the steam. Exhaust flow quantity in relation to the fuel supply quantity is lowered by lowering the air excess ratio, and the exhaust heat loss is lowered. The output of the whole of the system is improved by driving a steam turbine with the steam generated by the heat exchanger.

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