# US 10,502,137 B2 · Gas turbine with a valve cooling system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,502,137 B2 - Document ID: US10502137B2 - Status: Granted - Kind: B2 - Application number: 14/886,157 - Filed: 2015-10-19 - Published: 2017-04-20 - Granted: 2019-12-10 - Earliest claimed: 2015-10-19 - Assignees: General Electric Company - Applicants: General Electric Company - Inventors: Avishetti Srinivas; Laxmikant Merchant; Anil Kumar Dasoji; Ampili Kishore Kumar - Web page: https://patentgrep.com/patent/US10502137B2 ## CPC - F02C 7/18: the medium being gaseous, e.g. air {(F02C7/125 takes precedence)} - F01D 25/12: Cooling - F01D 25/24: Casings (modified for heating or cooling F01D25/14); Casing parts, e.g. diaphragms, casing fastenings (casings for rotary machines or engines in general F16M {; special arrangements in stators dealing with breaking-off of part of rotor F01D21/045}) - F02C 6/08: the gas being bled from the gas-turbine compressor - F16K 49/00: Means in or on valves for heating or cooling (heating or cooling of pipes or pipe systems F16L53/00; thermal insulation in connection with pipes or pipe systems F16L59/16) - 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) - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) - F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)} ## Abstract The present application provides a gas turbine engine. The gas turbine engine may include a compressor air extraction system with a number of valves, an exhaust frame cooling system with an exhaust frame blower, and a turbine valve cooling system with one or more valve protection boxes surrounding one or more of the valves. The valve protection boxes may be in communication with a flow of air from the exhaust frame blower. ## Claims ### Claim 1 A gas turbine engine, comprising: a compressor aft extraction system in communication with a compressor and a turbine; the compressor air extraction system comprising a first valve and a second valve, wherein the first valve and the second valve are in flow communication with the compressor and the turbine; the first valve and the second valve each comprising a valve body and a valve actuator; an exhaust frame cooling system; the exhaust frame cooling system comprising an exhaust frame blower; and a turbine valve cooling system; the turbine valve cooling system comprising a first valve protection box surrounding the first valve and a second valve protection box surrounding the second valve; wherein the first valve protection box comprises a first air inlet in communication with the exhaust frame blower and configured to receive a first flow of air from the exhaust frame blower; and wherein the second valve protection box comprises a second air inlet in communication with the exhaust frame blower and configured to receive a second flow of air from the exhaust frame blower. ### Claim 2 (depends on 1) The gas turbine engine of claim 1, wherein the compressor air extraction system further comprises a plurality of air extraction lines each extending from a stage of the compressor to a stage of the turbine. ### Claim 3 (depends on 2) The gas turbine engine of claim 2, wherein the first valve comprises a first extraction flow modulation valve positioned on a first air extraction line of the plurality of air extraction lines and configured to modulate a first extraction flow of air from the compressor to the turbine. ### Claim 4 (depends on 3) The gas turbine engine of claim 3, wherein the second valve comprises a second extraction flow modulation valve positioned on a second air extraction line of the plurality of air extraction lines and configured to modulate a second extraction flow of air from the compressor to the turbine. ### Claim 5 (depends on 4) The gas turbine engine of claim 4, wherein the first valve protection box comprises a first extraction flow modulation valve protection box surrounding the first extraction flow modulation valve, and wherein the second valve protection box comprises a second extraction modulation valve protection box surrounding the second extraction flow modulation valve. ### Claim 6 (depends on 5) The gas turbine engine of claim 5, wherein the exhaust frame cooling system comprises an exhaust frame manifold, and wherein the first extraction flow modulation valve protection box and the second extraction flow modulation valve protection box each are in fluid communication with the exhaust frame blower via the exhaust frame manifold. ### Claim 7 (depends on 2) The gas turbine engine of claim 2, wherein the compressor air extraction system further comprises an ejector in fluid communication with a first air extraction line of the plurality of air extraction lines and a second air extraction line of the plurality of air extraction lines. ### Claim 8 (depends on 7) The gas turbine engine of claim 7, wherein the first valve comprises a bypass valve. ### Claim 9 (depends on 8) The gas turbine engine of claim 8, wherein the bypass valve is positioned on a bypass line in fluid communication with the first air extraction line. ### Claim 10 (depends on 7) The gas turbine engine of claim 7, wherein the first valve protection box comprises a bypass valve protection box surrounding the bypass valve. ### Claim 11 (depends on 7) The gas turbine engine of claim 7, wherein the second valve comprises an isolation valve. ### Claim 12 (depends on 11) The gas turbine engine of claim 11, wherein the isolation valve is positioned on a crossover line extending between the first air extraction line and the second air extraction line. ### Claim 13 (depends on 11) The gas turbine engine of claim 11, wherein the second valve protection box comprises an isolation valve protection box surrounding the isolation valve. ### Claim 14 (depends on 1) The gas turbine engine of claim 1, wherein the first valve protection box and the second valve protection box each comprise an insulated heat shield. ### Claim 15 A method of cooling a first valve and a second valve in a gas turbine engine, comprising: providing a flow of extraction air from a compressor to a turbine; controlling the flow of the extraction air by the first valve and the second valve, wherein the first valve and the second valve each comprise a valve body and a valve actuator; positioning the first valve in a first valve protection box, wherein the first valve protection box comprises a first air inlet in communication with an exhaust frame blower; positioning the second valve in a second valve protection box, wherein the second valve protection box comprises a second air inlet in communication with the exhaust frame blower; providing a first flow of exhaust frame cooling air from the exhaust frame blower to the first valve protection box via the first air inlet; and providing a second flow of exhaust frame cooling air from the exhaust frame blower to the second valve protection box via the second air inlet. ### Claim 16 A gas turbine engine, comprising: a first air extraction valve comprising a first valve body and a first valve actuator; a second air extraction valve comprising a second valve body and a second valve actuator; wherein the first air extraction valve and the second air extraction valve are in flow communication with a compressor and a turbine; an exhaust frame blower; a first valve protection box surrounding the first air extraction valve, wherein the first valve protection box comprises a first air inlet in communication with the exhaust frame blower and configured to receive a first flow of air from the exhaust frame blower; and a second valve protection box surrounding the second air extraction valve, wherein the second valve protection box comprises a second aft inlet in communication with the exhaust frame blower and configured to receive a second flow of air from the exhaust frame blower. ### Claim 17 (depends on 16) The gas turbine engine of claim 16, wherein the first air extraction valve comprises a first extraction flow modulation valve, and wherein the second air extraction valve comprises a second extraction flow modulation valve. ### Claim 18 (depends on 16) The gas turbine engine of claim 16, wherein the first air extraction valve comprises a bypass valve in fluid communication with an ejector. ### Claim 19 (depends on 18) The gas turbine engine of claim 18, wherein the second air extraction valve comprises an isolation valve in fluid communication with the ejector. ### Claim 20 (depends on 16) The gas turbine engine of claim 16, wherein the first valve protection box and the second valve protection box each comprise an insulated heat shield.