Reinforced seal unit for pumpdown pistons or well swabs
    15.
    发明授权
    Reinforced seal unit for pumpdown pistons or well swabs 失效
    用于抽空活塞或井拭子的加强密封单元

    公开(公告)号:US4227573A

    公开(公告)日:1980-10-14

    申请号:US961139

    申请日:1978-11-16

    摘要: A piston for use as a TFL locomotive or well swab having a seal unit forming a fluid seal between the piston and the inner wall of a flow conductor or tubing string. The seal unit comprising at least one annular fin or lip extending radially from the piston. The annular fin or lip having an exterior portion formed from elastomeric material which is deformable to seal with the flow conductor and an interior portion formed from elastomeric material molded on wire mesh. The interior portion providing increased wear resistance and strength for the annular lip. In one version, the piston carries several individual seal units each having an annular lip.

    摘要翻译: 用作TFL机车或井眼用的活塞,其具有在活塞和流动导体或管柱的内壁之间形成流体密封的密封单元。 密封单元包括从活塞径向延伸的至少一个环形翅片或唇缘。 环形翅片或唇缘具有由弹性体材料形成的外部部分,其可变形以与流动导体密封,以及由在金属丝网上模制的弹性体材料形成的内部部分。 内部部分为环形唇缘提供增加的耐磨性和强度。 在一个版本中,活塞承载多个具有环形唇缘的单个密封单元。