# US 9,435,223 B2 · Gas turbine apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,435,223 B2 - Document ID: US9435223B2 - Status: Granted - Kind: B2 - Application number: 13/896,483 - Filed: 2013-05-17 - Published: 2014-01-30 - Granted: 2016-09-06 - Earliest claimed: 2012-07-25 - Assignees: Hanwha Techwin Co., Ltd. - Applicants: Hanwha Techwin Co., Ltd. - Inventors: Myeong-hyo Kim - Web page: https://patentgrep.com/patent/US9435223B2 ## CPC - F01D 25/12: Cooling - F01D 15/00: Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby - F01D 15/12: Combinations with mechanical gearing (driven by multiple engines F01D13/00) - F02C 6/08: the gas being bled from the gas-turbine compressor - F02C 7/12: Cooling of plants (of component parts, see the relevant subclasses, e.g. F01D; cooling of engines in general F01P) - F05D 2220/40: in turbochargers - F05D 2230/72: Maintenance - F05D 2260/4031: as in toothed gearing - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) - 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) - F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS ## Abstract Provided is a gas turbine apparatus including: a turbine unit comprising an output shaft; a cooling gas generation unit, comprising a rotation shaft, which receives power from the output shaft through the rotation shaft and generates a compressed cooling gas; a first duct unit which transfers the generated compressed cooling gas to the turbine unit; a clutch unit which controls a power transfer connection between the output shaft and the rotation shaft; and a control unit which controls the transferring of the generated compressed cooling gas. ## Claims ### Claim 1 A gas turbine apparatus comprising: a turbine unit comprising an output shaft; a cooling gas generation unit, comprising a rotation shaft, configured to receive power from the output shaft through the rotation shaft, and configured to generate a compressed cooling gas; a first duct unit configured to transfer the generated compressed cooling gas to the turbine unit; a clutch unit configured to control a power transfer connection between the output shaft and the rotation shaft; and a control unit configured to control the transferring of the generated compressed cooling gas, wherein the cooling gas generation unit comprises a plurality of compressors configured to generate compressed cooling gases having different pressures. ### Claim 2 (depends on 1) The gas turbine apparatus of claim 1, wherein the turbine unit comprises at least one expanding stage portion. ### Claim 3 (depends on 1) The gas turbine apparatus of claim 1, wherein at least one temperature sensor is disposed at the turbine unit. ### Claim 4 (depends on 3) The gas turbine apparatus of claim 3, wherein the at least one temperature sensor is configured to measure a temperature of a shaft of a rotor, a temperature of a blade, and a temperature of a vane, and configured to transmit the measured temperature to the control unit. ### Claim 5 (depends on 1) The gas turbine apparatus of claim 1, wherein a number of the plurality of compressors corresponds to a number of at least one expanding stage portion of the turbine unit. ### Claim 6 (depends on 1) The gas turbine apparatus of claim 1, further comprising an electric generation unit configured to receive the power from the output shaft and configured to generate electric power. ### Claim 7 (depends on 1) The gas turbine apparatus of claim 1, further comprising at least one first valve installed at the first duct unit, wherein the control unit is configured to control the clutch unit and the at least one first valve to control the transferring of the generated compressed cooling gas. ### Claim 8 (depends on 7) The gas turbine apparatus of claim 7, wherein the control unit is configured to monitor a temperature of the turbine unit, and if the temperature of the turbine unit exceeds a predetermined temperature, the control unit opens the at least one first valve and operates the clutch unit to connect the output shaft and the rotation shaft. ### Claim 9 (depends on 1) The gas turbine apparatus of claim 1, further comprising: a gas compression unit configured to receive the power from the output shaft and compresses gas flowing into a combustor; a second duct unit configured to extract and configured to transfer a part of the compressed gas to the turbine unit to cool the turbine unit; at least one first valve installed at the first duct unit; and at least one second valve installed at the second duct unit, wherein the control unit is configured to control the clutch unit, the at least one first valve and at least one second valve to control the transferring of the generated compressed cooling gas. ### Claim 10 (depends on 9) The gas turbine apparatus of claim 9, wherein the control unit is configured to monitor a temperature of the turbine unit, and if the temperature of the turbine unit exceeds a predetermined temperature, the control unit opens the at least one first valve and the at least one second valve and operates the clutch unit to connect the output shaft and the rotation shaft. ### Claim 11 A gas turbine apparatus comprising: a turbine unit comprising an output shaft; a cooling gas generation unit, comprising a rotation shaft, configured to receive power from the output shaft through the rotation shaft, and configured to generate a compressed cooling gas; a first duct unit configured to transfer the generated compressed cooling gas to the turbine unit; a clutch unit configured to control a power transfer connection between the output shaft and the rotation shaft; a control unit configured to control the transferring of the generated compressed cooling gas; a gas compression unit configured to receive the power from the output shaft and configured to compress gas flowing into a combustor; and a second duct unit configured to extract and configured to transfer a part of the compressed gas to the turbine unit to cool the turbine unit, wherein the second duct unit connects with the first duct unit. ### Claim 12 (depends on 11) The gas turbine apparatus of claim 11, wherein the gas compression unit comprises at least one compression stage portion, and wherein a number of the at least one compression stage portion corresponds to a number of at least one expanding stage portion of the turbine unit. ### Claim 13 (depends on 11) The gas turbine apparatus of claim 11, further comprising a combustion unit configured to generate combustion by using a compressed gas from the gas compression unit. ### Claim 14 (depends on 11) The gas turbine apparatus of claim 11, further comprising at least one second valve installed at the second duct unit, wherein the control unit is configured to monitor a temperature of the turbine unit, and if the temperature of the turbine unit exceeds a predetermined temperature, the control unit opens the at least one second valve and operates the clutch unit to connect the output shaft and the rotation shaft. ### Claim 15 A gas turbine apparatus comprising: a turbine unit configured to generate power using a compressed gas; a cooling gas generation unit configured to generate a cooling gas to cool the turbine unit; and a control unit configured to control the cooling gas generation unit to generate the cooling gas to supply the generated cooling gas to the turbine unit, wherein the cooling gas generation unit comprises a plurality of compressors configured to generate compressed cooling gases having different pressures. ### Claim 16 (depends on 15) The gas turbine apparatus of claim 15, further comprising: an output shaft connected to the turbine unit; a rotation shaft connected to the cooling gas generation unit; and a clutch configured to connect the output shaft and the rotation shaft to supply the at least a portion of the power from the turbine unit to the cooling gas generation unit, according to control of the control unit. ### Claim 17 (depends on 16) The gas turbine apparatus of claim 16, further comprising a gas compression unit configured to generate the compressed gas, and configured to supply a portion of the compressed gas to the turbine to cool the turbine unit, according to control of the control unit.