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公开(公告)号：US11047306B1
公开(公告)日：2021-06-29
申请号：US16800677
申请日：2020-02-25
发明人： Michael R. Millhaem , Byron Andrew Pritchard , Hendrik Pieter Jacobus de Bock , John Carl Glessner , Jeffrey Scott Ksander , Craig A. Gonyou , Christopher Jon Potokar
摘要： A turbine engine includes: a core cowl, a core within the core cowl, the core including a compressor having a bleed port; an undercowl space; a cooling duct at least partially in the undercowl space and having an inlet and an outlet, the inlet communicating with a source of cooling air, the outlet communicating with the compressor bleed port; a valve assembly in the cooling duct; and a cooling blower operable to move air flow from the inlet of the cooling duct towards the outlet of the cooling duct and into the compressor bleed port. A method of cooling an engine having a core cowl and a compressor, combustor and turbine includes: operating the engine; shutting the engine down; after or during engine shutdown, operating a cooling blower internal to the engine cowl, to force air through the compressor by way of a compressor bleed port.
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公开(公告)号：US20210148243A1
公开(公告)日：2021-05-20
申请号：US17143115
申请日：2021-01-06
发明人： Nathan Evan McCurdy Gibson , Christopher Jon Potokar , Hariharan Manickavasagam Sarojini , Arnab Sen , Bikramjit Chatterjee
IPC分类号： F01D11/02
摘要： An aspirating face seal between high and low pressure regions of a turbomachine at a juncture between rotatable and non-rotatable members of turbomachine includes gas bearing rotatable and non-rotatable face surfaces. Primary and starter seal teeth and optional deflector seal tooth are mounted on seal teeth carrier on rotatable member. Non-rotatable face surface is mounted on an annular slider on the non-rotatable member. A pull-off biasing means urges the annular slider away from the rotatable member and the non-rotatable face surface away from the rotatable surface. A secondary seal is in sealing engagement with the annular slider in the low pressure region and the pull-off biasing means is located radially outwardly of the annular slider in the high pressure region. Biasing means may include coil springs within spring chambers of circumferentially spaced cartridges. Tongues extend inwardly from spring chambers into grooves in slider.
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公开(公告)号：US11624290B2
公开(公告)日：2023-04-11
申请号：US17143115
申请日：2021-01-06
发明人： Nathan Evan McCurdy Gibson , Christopher Jon Potokar , Hariharan Manickavasagam Sarojini , Arnab Sen , Bikramjit Chatterjee
IPC分类号： F01D11/02
摘要： An aspirating face seal between high and low pressure regions of a turbomachine at a juncture between rotatable and non-rotatable members of turbomachine includes gas bearing rotatable and non-rotatable face surfaces. Primary and starter seal teeth and optional deflector seal tooth are mounted on seal teeth carrier on rotatable member. Non-rotatable face surface is mounted on an annular slider on the non-rotatable member. A pull-off biasing means urges the annular slider away from the rotatable member and the non-rotatable face surface away from the rotatable surface. A secondary seal is in sealing engagement with the annular slider in the low pressure region and the pull-off biasing means is located radially outwardly of the annular slider in the high pressure region. Biasing means may include coil springs within spring chambers of circumferentially spaced cartridges. Tongues extend inwardly from spring chambers into grooves in slider.
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公开(公告)号：US20170022837A1
公开(公告)日：2017-01-26
申请号：US14807376
申请日：2015-07-23
CPC分类号： F01D5/046 , F01D5/048 , F01D11/025 , Y02E20/14 , Y02T50/673
摘要： An aspirating seal assembly for use in a turbine engine is provided. The aspirating seal assembly includes a face seal and a rotary component. The face seal includes a first annular seal surface, and the rotary component includes a second annular seal surface positioned adjacent the first annular seal surface and defining a seal interface therebetween. The face seal is configured to discharge a flow of air towards the seal interface. The seal assembly also includes a first seal member extending between the first and second annular seal surfaces such that the flow of air induces a back pressure across the seal interface, and a second seal member positioned radially inward from the first seal member and extending between the first and second annular seal surfaces. A length of the second seal member is selected to increase the back pressure induced across the seal interface.
摘要翻译： 提供了一种用于涡轮发动机的吸气密封组件。 抽吸密封组件包括面密封件和旋转部件。 所述面密封件包括第一环形密封表面，并且所述旋转部件包括邻近所述第一环形密封表面定位并且在其之间限定密封接合的第二环形密封表面。 面密封件构造成朝向密封界面排出空气流。 密封组件还包括在第一和第二环形密封表面之间延伸的第一密封构件，使得空气流引导穿过密封界面的背压，以及从第一密封构件径向向内定位并在第一密封构件之间延伸的第二密封构件 第一和第二环形密封表面。 选择第二密封构件的长度以增加在密封界面上引起的背压。
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公开(公告)号：US11174752B2
公开(公告)日：2021-11-16
申请号：US16723011
申请日：2019-12-20
发明人： Thomas Earl Dyson , Daniel Gene Dunn , Changjie Sun , Christopher Jon Potokar , Douglas Glenn Decesare
摘要： A ceramic matrix composite (CMC) component and method of fabrication including one or more elongate functional features formed in multiple fiber plies of the CMC component. The CMC component includes a plurality of longitudinally extending ceramic matrix composite plies in a stacked configuration. Each of the one or more elongate functional features includes an inlet and an outlet to provide a flow of fluid from a fluid source to an exterior of the ceramic matrix composite component. The one or more elongate functional features are configured in multiple plies of the plurality of longitudinally extending ceramic matrix composite plies to form a plurality of cooling channels in multiple plies of the ceramic matrix composite component.
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公开(公告)号：US20210189902A1
公开(公告)日：2021-06-24
申请号：US16723011
申请日：2019-12-20
发明人： Thomas Earl Dyson , Daniel Gene Dunn , Changjie Sun , Christopher Jon Potokar , Douglas Glenn Decesare
摘要： A ceramic matrix composite (CMC) component and method of fabrication including one or more elongate functional features formed in multiple fiber plies of the CMC component. The CMC component includes a plurality of longitudinally extending ceramic matrix composite plies in a stacked configuration. Each of the one or more elongate functional features includes an inlet and an outlet to provide a flow of fluid from a fluid source to an exterior of the ceramic matrix composite component. The one or more elongate functional features are configured in multiple plies of the plurality of longitudinally extending ceramic matrix composite plies to form a plurality of cooling channels in multiple plies of the ceramic matrix composite component.
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公开(公告)号：US10900369B2
公开(公告)日：2021-01-26
申请号：US16129218
申请日：2018-09-12
发明人： Nathan Evan McCurdy Gibson , Christopher Jon Potokar , Hariharan Manickavasagam Sarojini , Arnab Sen , Bikramjit Chatterjee
IPC分类号： F01D11/02
摘要： An aspirating face seal between high and low pressure regions of a turbomachine at a juncture between rotatable and non-rotatable members of turbomachine includes gas bearing rotatable and non-rotatable face surfaces. Primary and starter seal teeth and optional deflector seal tooth are mounted on seal teeth carrier on rotatable member. Non-rotatable face surface is mounted on an annular slider on the non-rotatable member. A pull-off biasing means urges the annular slider away from the rotatable member and the non-rotatable face surface away from the rotatable surface. A secondary seal is in sealing engagement with the annular slider in the low pressure region and the pull-off biasing means is located radially outwardly of the annular slider in the high pressure region. Biasing means may include coil springs within spring chambers of circumferentially spaced cartridges. Tongues extend inwardly from spring chambers into grooves in slider.
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公开(公告)号：US09976420B2
公开(公告)日：2018-05-22
申请号：US14807376
申请日：2015-07-23
CPC分类号： F01D5/046 , F01D5/048 , F01D11/025 , Y02E20/14 , Y02T50/673
摘要： An aspirating seal assembly for use in a turbine engine is provided. The aspirating seal assembly includes a face seal and a rotary component. The face seal includes a first annular seal surface, and the rotary component includes a second annular seal surface positioned adjacent the first annular seal surface and defining a seal interface therebetween. The face seal is configured to discharge a flow of air towards the seal interface. The seal assembly also includes a first seal member extending between the first and second annular seal surfaces such that the flow of air induces a back pressure across the seal interface, and a second seal member positioned radially inward from the first seal member and extending between the first and second annular seal surfaces. A length of the second seal member is selected to increase the back pressure induced across the seal interface.
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