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公开(公告)号：US20240209751A1
公开(公告)日：2024-06-27
申请号：US18237542
申请日：2023-08-24
发明人： Shinichi YOSHIOKA , Yasuhiro NIINA
CPC分类号： F01D21/12 , F01D9/041 , F05D2240/35
摘要： A method of evaluating performance of a gas turbine includes: acquiring static operation determination data and acquiring index value data; storing the acquired data; determining whether or not the gas turbine is in a static operation state in accordance with whether or not the static operation determination data for each of a plurality of times in a period in the past set in advance from a determination time among the static operation determination data for each of the plurality of times stored in the storing of the data entering a range of a variation width set in advance; and acquiring the evaluation index value using the index value data at the determination time at which the gas turbine is determined to be in the static operation state. The static operation determination data includes a cavity temperature between an inner shroud of a turbine vane and a rotor shaft.
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公开(公告)号：US20240191633A1
公开(公告)日：2024-06-13
申请号：US18513073
申请日：2023-11-17
申请人： ROLLS-ROYCE PLC
CPC分类号： F01D21/12 , F02C7/268 , F05D2270/3032
摘要： A method of operating a gas turbine engine having a spool includes executing, by a controller, a shutdown procedure. The shutdown procedure includes: performing an idle rotation operation; determining a parameter associated with a thermal condition of the gas turbine engine while the idle rotation operation is performed; determining, based on the determined parameter, whether the gas turbine engine has met a pre-determined criterion corresponding to a thermally stabilised condition; and terminating the idle rotation operation in response to a determination that the gas turbine engine has met the pre-determined criterion.
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公开(公告)号：US11867071B1
公开(公告)日：2024-01-09
申请号：US18155992
申请日：2023-01-18
CPC分类号： F01D21/003 , F01D15/10 , F01D17/085 , F01D21/12 , F01D21/14 , G01N17/00 , F05D2220/76 , F05D2260/80 , F05D2260/95
摘要： In one embodiment, a turbine monitoring system includes a temperature measurer configured to sense a temperature of steam to be introduced to a steam turbine, and output a sensing result of the temperature. The system further includes an electrical output measurer configured to sense an electrical output of a generator driven by the steam turbine, and output a sensing result of the electrical output. The system further includes a computing module configured to compute an erosion quantity of a moving vane of the steam turbine with water drops, based on the sensing result of the temperature that is output from the temperature measurer and the sensing result of the electrical output that is output from the electrical output measurer. The system further includes an outputting module configured to output information that is based on the erosion quantity computed by the computing module.
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公开(公告)号：US11828187B2
公开(公告)日：2023-11-28
申请号：US17078653
申请日：2020-10-23
发明人： Daryoush Mirzahekmati , Ioan Sabau , Poi Loon Tang
CPC分类号： F01D21/12 , F01D21/003 , F01D21/14 , F05D2220/323 , F05D2260/81 , F05D2270/304 , F05D2270/3011 , F05D2270/313 , F05D2270/708 , F05D2270/71
摘要： The present disclosure provides methods and systems for determining a synthesized engine parameter of a gas turbine engine. An initial model parameter is obtained from an onboard model associated with the gas turbine engine. A correction factor for the onboard model is determined by modifying a difference between the onboard model and an aero-thermal model of the gas turbine engine using first and second engine parameters and first and second operating conditions, wherein the first and second engine parameters are independent from one another over an operating envelope of the gas turbine engine. The initial model parameter is scaled by applying the correction factor thereto to obtain a corrected model parameter. The corrected model parameter is output as the synthesized engine parameter.
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公开(公告)号：US20230287802A1
公开(公告)日：2023-09-14
申请号：US17586531
申请日：2022-01-27
申请人： ROHR, INC.
发明人： PHILIP J. BJORNSSON , WILLIAM OEI
CPC分类号： F01D21/12 , F01D25/02 , F01D25/24 , F05D2260/60 , F05D2260/80
摘要： An inlet cowl may comprise: a forward bulkhead; an aft bulkhead spaced apart axially aft of the forward bulkhead; an annular structure having a radially inner wall spaced apart from a radially outer wall; a fluid conduit extending axially through an aft plenum defined axially between the aft bulkhead and the forward bulkhead, the aft plenum defined radially between the radially inner wall and the radially outer wall; and an over-temperature indication assembly coupled to at least one of the radially outer wall and the aft bulkhead, the over-temperature indication assembly configured to transition from a retracted state to a deployed state in response to a portion of the over-temperature indication assembly exceeding a temperature threshold.
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公开(公告)号：US11536202B2
公开(公告)日：2022-12-27
申请号：US16497951
申请日：2018-03-23
申请人： GE Avio S.r.l.
摘要： A gas turbine engine (10) includes a compressor section, a turbine section, and an accessory gearbox (100). A turning unit (200) for the gas turbine engine includes an output assembly (204) configured to be mechanically coupled to the gas turbine engine, and an electric motor (202). The electric motor is operable to rotate, through the output assembly, one or more components of the compressor section or the turbine section at a rotational speed less than about fifty revolutions per minute during a shut-down condition of the gas turbine engine.
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公开(公告)号：US11536198B2
公开(公告)日：2022-12-27
申请号：US17379261
申请日：2021-07-19
发明人： Michael Robert Millhaem , Christopher R. Bosco , Gerardo Perez , Hejie Li , Francisco Ernesto de la Pena , Alejandro Federico Medrano Perez , Andrew Campbell
摘要： A gas turbine engine includes a core cowl and a core contained within the core cowl. The core includes a compressor in fluid communication with a downstream combustor and a downstream turbine, the compressor including a compressor bleed port, wherein an undercowl space is defined between the core cowl and the core. The gas turbine engine further includes a cooling duct disposed at least partially in the undercowl space and having an inlet and an outlet, wherein the cooling duct is in fluid communication with a source of cooling air and is further in fluid communication with the compressor bleed port; a valve assembly including at least one valve disposed in the cooling duct; and a cooling blower disposed within the engine and operable to move an air flow from the inlet of the cooling duct towards the outlet of the cooling duct and through the compressor bleed port.
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公开(公告)号：US20220307385A1
公开(公告)日：2022-09-29
申请号：US17210754
申请日：2021-03-24
摘要： A method of detecting flame state of a combustor of a turbine engine. The method includes determining at least one of a first derivative and a second derivative of a compressor discharge pressure of a compressor of the turbine engine; determining at least one of a first derivative and a second derivative of a gas turbine exhaust gas temperature of the exhaust gases output by the turbine engine; determining at least one of a first derivative and a second derivative of a gas turbine shaft/rotor speed of the turbine engine; determining at least one of a first derivative and a second derivative of combustor dynamic pressure monitoring; and determining a flame state of a combustor of the turbine engine based on the combustor dynamic pressure monitoring, the determined derivatives of the combustion dynamics, compressor discharge pressure, gas turbine shaft/rotor speed, and gas turbine exhaust gas temperature of the exhaust gases.
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公开(公告)号：US20220195886A1
公开(公告)日：2022-06-23
申请号：US17126698
申请日：2020-12-18
摘要： A turbomachine for a vehicle is provided. The turbomachine includes a first rotatable component; a first power source operatively coupled with the first rotatable component; a second power source selectively coupled with the first rotatable component; and a controller having one or more processors and one or more memory devices, the one or more memory devices storing instructions that when executed by the one or more processors cause the one or more processors to perform operations, in performing the operations, the one or more processors are configured to: receive an input indicating an engine shutdown of the turbomachine; and in response to the engine shutdown, cause the second power source to provide power to and rotate the first rotatable component.
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公开(公告)号：US20220170372A1
公开(公告)日：2022-06-02
申请号：US17440007
申请日：2020-04-16
发明人： Shigeki Senoo
摘要： This steam turbine blade is provided with: a blade body (61) extending in a radial direction and having an airfoil profile in a cross section perpendicular to the radial direction; and a heater (H) including a heating wire disposed so as to extend along a trailing edge (Er) of the airfoil profile in the blade body (61). This configuration makes it possible to further mitigate an efficiency drop due to moisture attached to the surface of the steam turbine blade (60).
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