中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

19 records (took 0.017 seconds)

    Centrifugal Pump Stage with Increased Compressive Load Capacity
    11.
    发明申请
    Centrifugal Pump Stage with Increased Compressive Load Capacity 有权
    离心泵级增加压缩负载能力

    公开(公告)号：US20140294575A1

    公开(公告)日：2014-10-02

    申请号：US14171653

    申请日：2014-02-03

    Applicant: Schlumberger Technology Corporation

    Inventor： Tony R. Morrison ,  David Milton Eslinger ,  Kean Wee Cheah ,  Lye Heng Chang ,  Raju Ekambaram ,  Narayanan Lakshmanan

    IPC: F04D29/44 ,  F04D1/06

    CPC classification number: F04D1/063 ,  F04D29/445 ,  F04D29/548 ,  F04D29/648

    Abstract: A centrifugal pump stage with increased compressive load capacity is provided. In an implementation, a centrifugal pump stage includes a diffuser with outside wall capable of supporting increased axial forces. A mating surface of the outer wall can support axial forces generated by a stack of subsequent pump stages across the entire thickness of the outer wall. The diffuser can be a two-piece assembly including a load bearing module and a flow diffusing module. The load bearing module may be a cylinder of strong tubular alloy while the flow diffusing module can be separately cast in a manner that improves hydraulic efficiency. Various means for radially positioning the pump stages relieve the load bearing module from the task of aligning additional pump stages. A single rigid tube may also be used as the load bearing module for multiple pump stages. The tube may be made with a thin wall to increase pump volume.

    Abstract translation: 提供了具有增加的压缩载荷能力的离心泵级。 在一个实施方案中，离心泵级包括具有能够支撑增加的轴向力的外壁的扩散器。 外壁的配合表面可支撑穿过整个外壁整个厚度的后续泵级的堆叠产生的轴向力。 扩散器可以是包括承载模块和流动扩散模块的两件式组件。 承载模块可以是强的管状合金的气缸，而流动扩散模块可以以提高液压效率的方式分开铸造。 用于径向定位泵级的各种装置可以减轻承载模块的任务，使其对齐附加的泵级。 单个刚性管也可用作多个泵级的承载模块。 管可以用薄壁制成以增加泵的体积。

    BEARINGS FOR ELECTRIC SUBMERSIBLE PUMPS
    17.
    发明申请
    BEARINGS FOR ELECTRIC SUBMERSIBLE PUMPS 有权

    公开(公告)号：US20220341435A1

    公开(公告)日：2022-10-27

    申请号：US17753792

    申请日：2020-09-18

    Applicant: Schlumberger Technology Corporation

    Inventor： Kean Wee Cheah ,  Sethuraj Arumugam ,  Kim Hoo Goh

    IPC: F04D29/046 ,  E21B43/12 ,  F04D13/10

    Abstract: Anti-rotation bearing assemblies for electric submersible pumps are provided. An electric submersible pump includes a plurality of centrifugal pump stages, each stage including a rotating impeller and a stationary diffuser mounted on a shaft coupled to a motor. In use, the motor rotates the shaft, which rotates the impeller within the stationary diffuser. A bearing assembly can include a bearing sleeve disposed about the shaft and a bushing disposed radially between the bearing sleeve and the diffuser. The bearing sleeve rotates with the shaft in operation, and the bushing remains stationary with the diffuser. The bushing can have an external key that is received in a key way or groove in the diffuser to act as an anti-rotation feature. In other variations, the bushing can have an eccentric or oblique profile, which can act as an anti-rotation feature.

    THRUST HANDLING FOR ELECTRIC SUBMERSIBLE PUMPS
    18.
    发明申请
    THRUST HANDLING FOR ELECTRIC SUBMERSIBLE PUMPS 有权

    公开(公告)号：US20220282732A1

    公开(公告)日：2022-09-08

    申请号：US17753797

    申请日：2020-09-18

    Applicant: Schlumberger Technology Corporation

    Inventor： Raju Ekambaram ,  Teng Fei Wang ,  Pradeep Mahadevan ,  Kean Wee Cheah ,  David Milton Eslinger

    IPC: F04D13/10 ,  F04D29/047

    Abstract: An electric submersible pump includes a plurality of centrifugal pump stages, each stage including a rotating impeller and a stationary diffuser mounted on a shaft coupled to a motor. An upthrust washer can be disposed axially between an impeller and its associated diffuser at or near a tip of the impeller, and the gap between the impeller tip and diffuser can define the end play or axial clearance for the pump. If the upthrust washer wears away, upthrust rubbing occurs at the impeller tip instead of proximate the pump shaft to advantageously help protect the shaft from damage or failure related to heat. In some ESPs, an upthrust bearing assembly can be located at the pump head. A downthrust washer can be disposed in an upstream facing groove of the impeller. The downthrust washer can have a thickness greater than 0.10 in.

    PARTICLE GUARD RING FOR MIXED FLOW PUMP
    19.
    发明申请
    PARTICLE GUARD RING FOR MIXED FLOW PUMP 有权

    公开(公告)号：US20210310493A1

    公开(公告)日：2021-10-07

    申请号：US17352450

    申请日：2021-06-21

    Applicant: Schlumberger Technology Corporation

    Inventor： Kean Wee Cheah ,  David Milton Eslinger

    IPC: F04D13/10 ,  F04D1/06 ,  F04D7/04 ,  F04D29/041 ,  F04D29/70 ,  F04D13/02

    Abstract: A mixed-flow impeller for an electric submersible pump can include a lower end and an upper end; a hub that includes a through bore that defines an axis; blades that extend at least in part radially outward from the hub where each of the blades includes a leading edge and a trailing edge; an upper balance ring that includes a radially inward facing balance chamber surface and a radially outward facing diffuser clearance surface; and an upper guard ring disposed radially outwardly from the upper balance ring where the upper guard ring includes an axially facing diffuser clearance surface that is disposed axially between the trailing edges of the blades and the upper end.

Patent Agency Ranking