SYSTEMS AND METHODS FOR TURBINE ENGINE PARTICLE SEPARATION

    公开(公告)号:US20200032818A1

    公开(公告)日:2020-01-30

    申请号:US16044704

    申请日:2018-07-25

    Abstract: A turbine engine incorporating a fine particle separation means. The turbine engine includes: a compressor, a diffuser, and a flow path positioned downstream from the diffuser, wherein the flow path comprises an outer annular wall and an inner annular wall between which the compressed air flows, and wherein the flow path comprises an arc that redirects the compressed air from flowing in a substantially radial flow direction to a substantially axial flow direction. The turbine engine further includes an extraction slot in the outer annular wall that fluidly connects with a scavenge plenum, the extraction slot also being positioned downstream axially along the flow path from the arc. The turbine engine further includes an aspiration slot, downstream from the extraction slot, that allows air from the plenum to recirculate back into the flow path.

    GAS TURBINE ENGINE WITH COMPRESSOR BLEED SYSTEM FOR COMBUSTOR START ASSIST

    公开(公告)号:US20230122939A1

    公开(公告)日:2023-04-20

    申请号:US17450840

    申请日:2021-10-14

    Abstract: A gas turbine engine includes a combustor having a combustor air inlet, an axial-centrifugal compressor, a shroud, a secondary flow duct, and a valve. The shroud surrounds at least a portion of the axial-centrifugal compressor and has a surge bleed plenum defined therein that is in fluid communication with, and receives compressed air from, the axial compressor outlet. The secondary airflow duct has a duct inlet that is in fluid communication with the surge bleed plenum, and a duct outlet that is in fluid communication with the combustor air inlet. The valve is mounted on the secondary airflow duct and is movable between a closed position, in which the secondary airflow duct does not provide fluid communication between the surge bleed plenum and the combustor air inlet, and an open position, in which the secondary airflow duct provides fluid communication between the surge bleed plenum and the combustor air inlet.

    Scavenge methodologies for turbine engine particle separation concepts

    公开(公告)号:US11421595B2

    公开(公告)日:2022-08-23

    申请号:US16656262

    申请日:2019-10-17

    Abstract: A method for scavenging small particles from a turbine engine includes directing compressed air through a flowpath, downstream of a compressor, which causes a reduction in a radial flow component and the introduction of or an increase in an axial flow component of the compressed air, removing a portion of the compressed air from the flowpath and directing the portion into a scavenge plenum, the scavenge plenum being positioned adjacent to and radially outward from the flowpath, and returning the portion of the compressed air from the plenum to the flowpath while maintaining a majority of the small particles that were present in the portion within the scavenge plenum. Further, the method includes removing the majority of small particles from the plenum. The step of removing occurs intermittently during engine operation, during engine shutdown, or while the engine is not in operation, but does not occur continuously during engine operation.

    Auxiliary power units and other turbomachines having ported impeller shroud recirculation systems
    7.
    发明授权
    Auxiliary power units and other turbomachines having ported impeller shroud recirculation systems 有权
    辅助动力装置和其他带有叶轮护罩再循环系统的涡轮机

    公开(公告)号:US09377030B2

    公开(公告)日:2016-06-28

    申请号:US13853951

    申请日:2013-03-29

    Abstract: Embodiments of a turbomachine, such as a gas turbine engine, are provided. In one embodiment, the turbomachine includes an impeller, a main intake plenum in fluid communication with the inlet of the impeller, and an impeller shroud recirculation system. The impeller shroud recirculation system includes an impeller shroud extending around at least a portion of the impeller and having a shroud port therein. A shroud port cover circumscribes at least a portion of the shroud port and cooperates therewith to at least partially define an impeller recirculation flow path. The impeller recirculation flow path has an outlet positioned to discharge airflow into the main intake plenum at a location radially outboard of the shroud port when pressurized air flows from the impeller, through the shroud port, and into the impeller recirculation flow path during operation of the turbomachine.

    Abstract translation: 提供涡轮机例如燃气轮机的实施例。 在一个实施例中,涡轮机包括叶轮,与叶轮的入口流体连通的主进气室和叶轮罩再循环系统。 叶轮护罩再循环系统包括围绕叶轮的至少一部分延伸并且其中具有护罩端口的叶轮护罩。 护罩端口盖限定护罩端口的至少一部分并与其配合以至少部分地限定叶轮再循环流动路径。 叶轮再循环流动路径具有一个出口,该出口定位成当加压空气从叶轮通过护罩端口流动并进入叶轮再循环流动路径时,在外壳端口的径向外侧的位置处将气流排放到主进气通风室中 涡轮机

    SCAVENGE METHODOLOGIES FOR TURBINE ENGINE PARTICLE SEPARATION CONCEPTS

    公开(公告)号:US20200049069A1

    公开(公告)日:2020-02-13

    申请号:US16656262

    申请日:2019-10-17

    Abstract: A method for scavenging small particles from a turbine engine includes directing compressed air through a flowpath, downstream of a compressor, which causes a reduction in a radial flow component and the introduction of or an increase in an axial flow component of the compressed air, removing a portion of the compressed air from the flowpath and directing the portion into a scavenge plenum, the scavenge plenum being positioned adjacent to and radially outward from the flow path, and returning the portion of the compressed air from the plenum to the flowpath while maintaining a majority of the small particles that were present in the portion within the scavenge plenum. Further, the method includes removing the majority of small particles from the plenum. The step of removing occurs intermittently during engine operation, during engine shutdown, or while the engine is not operation, but does not occur continuously during engine operation.

    AUXILIARY POWER UNITS AND OTHER TURBOMACHINES HAVING PORTED IMPELLER SHROUD RECIRCULATION SYSTEMS
    9.
    发明申请
    AUXILIARY POWER UNITS AND OTHER TURBOMACHINES HAVING PORTED IMPELLER SHROUD RECIRCULATION SYSTEMS 有权
    辅助动力单元和其他具有叶轮式回油系统的涡轮机

    公开(公告)号:US20140294564A1

    公开(公告)日:2014-10-02

    申请号:US13853951

    申请日:2013-03-29

    Abstract: Embodiments of a turbomachine, such as a gas turbine engine, are provided. In one embodiment, the turbomachine includes an impeller, a main intake plenum in fluid communication with the inlet of the impeller, and an impeller shroud recirculation system. The impeller shroud recirculation system includes an impeller shroud extending around at least a portion of the impeller and having a shroud port therein. A shroud port cover circumscribes at least a portion of the shroud port and cooperates therewith to at least partially define an impeller recirculation flow path. The impeller recirculation flow path has an outlet positioned to discharge airflow into the main intake plenum at a location radially outboard of the shroud port when pressurized air flows from the impeller, through the shroud port, and into the impeller recirculation flow path during operation of the turbomachine.

    Abstract translation: 提供涡轮机例如燃气轮机的实施例。 在一个实施例中,涡轮机包括叶轮,与叶轮的入口流体连通的主进气室和叶轮罩再循环系统。 叶轮护罩再循环系统包括围绕叶轮的至少一部分延伸并且其中具有护罩端口的叶轮护罩。 护罩端口盖限定护罩端口的至少一部分并与其配合以至少部分地限定叶轮再循环流动路径。 叶轮再循环流动路径具有一个出口,该出口定位成当加压空气从叶轮通过护罩端口流动并进入叶轮再循环流动路径时,在外壳端口的径向外侧的位置处将气流排放到主进气通风室中 涡轮机。

    Compressor impeller with partially swept leading edge surface

    公开(公告)号:US11506059B2

    公开(公告)日:2022-11-22

    申请号:US17030040

    申请日:2020-09-23

    Abstract: An impeller associated with a compressor of a gas turbine engine includes a plurality of impeller blades. Each impeller blade of the plurality of impeller blades has a leading edge and a trailing edge opposite the leading edge in a streamwise direction. Each impeller blade of the plurality of impeller blades extends in a spanwise direction from a hub at 0% span to a tip at 100% span, and each impeller blade of the plurality of impeller blades has a plurality of mean camber lines that each extend from the leading edge to the trailing edge at a respective spanwise location. The leading edge includes a partially swept leading edge surface defined between 70% span to 100% span that extends in the streamwise direction between 3% to 15% of a mean camber line at 100% span.

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