MULTI-SURFACE SEALING FOR TWO-POSITION VALVES

    公开(公告)号:US20240360903A1

    公开(公告)日:2024-10-31

    申请号:US18140761

    申请日:2023-04-28

    IPC分类号: F16K1/44 F16K1/46 F16K27/02

    CPC分类号: F16K1/44 F16K1/465 F16K27/02

    摘要: A valve includes a housing. A stroking valve is operatively connected to the housing for valve stroking movement relative to the housing in a direction of a longitudinal axis of the housing. The stroking valve has an open position for flow through the housing and a closed position for blocking flow through the housing. The stroking valve is configured to make sealing contact with a second face seal between the seal block and the stroking valve after a first portion of a stroke from the open position to the closed position prior to making sealing contact with a first face seal between the stroking valve and the housing.

    ACCESSORY GEARBOXES
    4.
    发明申请
    ACCESSORY GEARBOXES 审中-公开

    公开(公告)号:US20180283281A1

    公开(公告)日:2018-10-04

    申请号:US15476319

    申请日:2017-03-31

    摘要: An accessory gearbox for a gas turbine engine has an accessory gear train, a first input and a second input. The first input and the second input are coupled to the accessory gear train. The accessory gear train operably couples the first input and the second input for communicating rotational energy between one or more accessories mounted to the accessory gearbox and the first and second inputs.

    GEARS AND GEAR PUMPS
    6.
    发明申请

    公开(公告)号:US20170198694A1

    公开(公告)日:2017-07-13

    申请号:US14993406

    申请日:2016-01-12

    IPC分类号: F04C15/00 F04C15/06 F04C2/18

    摘要: A gear pump includes a drive gear with drive gear teeth and a driven gear with driven gear teeth. The drive gear is rotatably disposed about a drive gear axis. The driven gear is rotatably disposed about a driven gear axis and is intermeshed with the drive gear such that a plurality of driven gear teeth are in sliding contact with a plurality of the driven gear teeth. One or more of the drive gear teeth or the driven gear teeth define within the tooth interior a cavity. The cavity is in fluid communication through an orifice with an inter-tooth volume defined between the contacting drive gear teeth and driven gear teeth such that fluid flows through the orifice to reduce cavitation within fluid confined within the inter-tooth volume.

    HEATED BYPASS VALVE FOR HEAT EXCHANGER
    9.
    发明申请
    HEATED BYPASS VALVE FOR HEAT EXCHANGER 有权
    加热旁通阀用于换热器

    公开(公告)号:US20150048617A1

    公开(公告)日:2015-02-19

    申请号:US14191801

    申请日:2014-02-27

    IPC分类号: F28F27/02 H02K7/18

    摘要: A heat exchanger bypass system comprises a liquid circuit, a first fluid circuit, a second fluid circuit, a first heat exchanger, a second heat exchanger, a liquid bypass line and a heated bypass valve. The first heat exchanger thermally couples the first fluid circuit to the liquid circuit. The second heat exchanger thermally couples the second fluid circuit to the liquid circuit. The liquid bypass line circumvents the first heat exchanger. The heated bypass valve controls flow through the liquid bypass line.

    摘要翻译: 热交换器旁路系统包括液体回路,第一流体回路,第二流体回路,第一热交换器,第二热交换器,液体旁通管线和加热的旁通阀。 第一热交换器将第一流体回路热耦合到液体回路。 第二热交换器将第二流体回路热耦合到液体回路。 液体旁路管线绕过第一热交换器。 加热旁路阀控制通过液体旁路管路的流量。

    AIR TURBINE STARTER AIR VALVE
    10.
    发明申请

    公开(公告)号:US20210189968A1

    公开(公告)日:2021-06-24

    申请号:US16725177

    申请日:2019-12-23

    IPC分类号: F02C7/277 F02C3/04 F02C9/18

    摘要: A starter air valve has a valve member and an actuator. A rotary spool valve has a rotatable valve body and an outer housing to selectively provide three modes of operation for the starter air valve. A first mode of operation connects air through the rotatable valve body to communicate with an actuator control, and to receive air back from the actuator control. The rotatable valve body then communicates the air to the actuator. In a second mode the rotatable valve body blocks communication between the actuator control and the actuator, and delivers air through a variable area port in a wall of the rotatable valve body to bypass the valve member. In a third mode the rotatable valve body blocks communication between the actuator and the actuator control, and connects air to the actuator without having passed to the actuator control. A starter air system is also disclosed.