ELECTRICAL MACHINE
    2.
    发明申请
    ELECTRICAL MACHINE 审中-公开

    公开(公告)号:US20190214887A1

    公开(公告)日:2019-07-11

    申请号:US16222198

    申请日:2018-12-17

    申请人: ROLLS-ROYCE plc

    摘要: An electrical machine has a stator carrying electrical windings which protrude at opposite ends of the stator to form respective, ring-shaped end windings. The electrical machine further has a rotor having a plurality of magnetic field-producing elements for producing a rotor magnetic field which interacts with a stator magnetic field produced by the windings. The electrical machine further has a coolant bath for holding liquid coolant. The electrical machine further has a heat sink in thermal contact with at least one of the end windings, the bath and the heat sink being configured such that the heat sink is immersed in the coolant held in the bath. The heat sink defines one or more fluid pathways configured such that vapour bubbles, formed when coolant in contact with the heat sink boils, escape by rising through the heat sink.

    STEAM DRIVEN SUBMERSIBLE PUMP
    8.
    发明申请

    公开(公告)号:US20180355703A1

    公开(公告)日:2018-12-13

    申请号:US15617225

    申请日:2017-06-08

    摘要: Methods and systems for lifting wellbore fluids in a subterranean well towards a surface include providing a closed water system free of fluid communication with the wellbore fluids, the closed water system having a water storage tank located outside of a high temperature zone of the subterranean well. Water from the water storage tank is circulated into the high temperature zone of the subterranean well to form a steam. A downhole steam turbine is rotated by the steam to drive a submersible pump system in fluid communication with the wellbore fluids and the wellbore fluids are lifted towards the surface with the submersible pump system. The steam exiting from the steam turbine is directed towards the water storage tank.