# US 10,371,048 B2 · Combustor and gas turbine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,371,048 B2 - Document ID: US10371048B2 - Status: Granted - Kind: B2 - Application number: 15/049,667 - Filed: 2016-02-22 - Published: 2017-08-24 - Granted: 2019-08-06 - Earliest claimed: 2016-02-22 - Assignees: Mitsubishi Hitachi Power Systems, Ltd. - Applicants: Mitsubishi Hitachi Power Systems, Ltd. - Inventors: Takahiro Yamauchi; Keijiro Saito; Satoshi Takiguchi; Koichi Nishida; Masakazu Nose - Web page: https://patentgrep.com/patent/US10371048B2 ## CPC - F02C 3/305: {Increasing the power, speed, torque or efficiency of a gas turbine or the thrust of a turbojet engine by injecting or adding water, steam or other fluids (F01K21/04 takes precedence)} - F01K 21/047: {having at least one combustion gas turbine} - F02C 3/30: Adding water, steam or other fluids {for influencing combustion, e.g. to obtain cleaner exhaust gases (F02C7/141, F02C7/30, F01D21/00, F01K21/04, F23D11/10 take precedence)} - F23D 11/10: the spraying being induced by a gaseous medium, e.g. water vapour - F23D 11/16: in which an emulsion of water and fuel is sprayed - F23D 2209/30: Purging - F23R 3/00: Continuous combustion chambers using liquid or gaseous fuel - F23R 3/28: characterised by the fuel supply (burners F23D) - F23R 3/283: {Attaching or cooling of fuel injecting means including supports for fuel injectors, stems, or lances} - F02C: GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F01D; jet-propulsion plants F02K; construction of compressors or fans F04; generating combustion products of high pressure or high velocity F23R; using gas turbines in compression refrigeration plants F25B11/00) - F01K: STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES (gas-turbine or jet-propulsion plants F02; nuclear power plants, engine arrangements therein G21D) - F23D: BURNERS - F23R: GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS (fluidised bed combustion apparatus specially adapted for operation at superatmospheric pressures F23C10/16) ## Abstract A combustor having a plurality of nozzles (main nozzles) to supply fuel disposed, includes a water supplier that is connected to all or part of the plurality of nozzles to supply water to each of a plurality of fuel pipes. The water supplier is configured to vary a supply amount of water for each of plurality of nozzles to which the water is supplied. ## Claims ### Claim 1 A combustor having only one first nozzle configured to receive fuel via a first fuel supply line and a plurality of second nozzles which are positioned around the only one first nozzle and are configured to receive fuel via second fuel supply lines different from the first fuel supply line, the combustor comprising: a water supplier that is connected to all or part of the plurality of second nozzles and configured to supply water to each of a plurality of fuel pipes, wherein the water supplier is configured to vary water supply for each of the plurality of second nozzles to which the water is supplied, and wherein a first supply amount of water and a second supply amount of water are supplied alternately to the plurality of second nozzles arranged consecutively in a circumferential direction around the only one first nozzle. ### Claim 2 (depends on 1) The combustor according to claim 1, wherein the only one first nozzle is a pilot nozzle and the plurality of second nozzles are main nozzles. ### Claim 3 (depends on 1) The combustor according to claim 1, wherein the water supplier comprises: a variable water supply unit configured to vary the first supply amount of water and the second supply amount of water; and a control unit configured to store water supply information in which the first supply amount of water and the second supply amount of water depending on an operating condition of the combustor are set, and control the variable water supply unit based on the operating condition of the combustor and the water supply information. ### Claim 4 (depends on 1) A gas turbine comprising the combustor according to claim 1. ### Claim 5 (depends on 2) The combustor according to claim 2, wherein the water supplier comprises: a variable water supply unit configured to vary the first supply amount of water and the second supply amount of water; and a control unit configured to store water supply information in which the first supply amount of water and the second supply amount of water depending on an operating condition of the combustor are set, and control the variable water supply unit based on the operating condition of the combustor and the water supply information. ### Claim 6 (depends on 2) A gas turbine comprising the combustor according to claim 2. ### Claim 7 (depends on 3) A gas turbine comprising the combustor according to claim 3. ### Claim 8 A combustor having only one first nozzle configured to receive fuel via a first fuel supply line and a plurality of second nozzles which are positioned around the only one first nozzle and are configured to receive fuel via second fuel supply lines different from the first fuel supply line, the combustor comprising: a water supplier that is connected to all or part of the plurality of second nozzles and configured to supply water to each of a plurality of fuel pipes, wherein the water supplier is configured to vary water supply for each of the plurality of second nozzles to which the water is supplied, and wherein a first supply amount of water is supplied to some of the plurality of second nozzles arranged consecutively in a circumferential direction around the only one first nozzle and a second amount of water is supplied to others of the plurality of second nozzles arranged consecutively in the circumferential direction around the only one first nozzle. ### Claim 9 A combustor having only one first nozzle configured to receive fuel via a first fuel supply line and a plurality of second nozzles which are positioned around the only one first nozzle and are configured to receive fuel via second fuel supply lines different from the first fuel supply line, the combustor comprising: a water supplier that is connected to all or part of the plurality of second nozzles and configured to supply water to each of a plurality of fuel pipes, wherein the water supplier is configured to vary water supply for each of the plurality of second nozzles to which the water is supplied, and wherein the plurality of second nozzles are configured such that supply amounts of water increase or decrease according to an order of the second nozzles in a circumferential direction around the only one first nozzle.