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    • 1. 发明授权
    • Welding fixtures by which pipe ends are joined together
    • 管末端的焊接固定件连接在一起
    • US5001320A
    • 1991-03-19
    • US270812
    • 1988-11-14
    • Ralph N. ConleyMichael N. Pierce
    • Ralph N. ConleyMichael N. Pierce
    • B23K9/035F16L13/02
    • B23K9/0358F16L13/0263
    • A pipe welding connector for joining pipe sections that have been internally coated with a heat sensitive coating material. The connector is arranged so that during the welding process, the coating remains below its degradation temperature. The connector has a first fixture at the end of one pipe section and a second fixture at the end of another pipe section. The first and second fixtures, when brought into abutting relationship, can be butt welded together to form the pipe welding connector. The second fixture is a cylinder that outwardly diverges into a bell and the opposed marginal end is of constant inside diameter and is attached about the exterior of a pipe section. Part of the pipe section extends from the belled marginal end and forms a stinger. The first fixture has an enlarged interior that telescopingly receives the stinger therein and further includes a belled marginal terminal end of a diameter equal to the diameter of the belled marginal end of the second fixture. This unique structure allows a first fixture to be formed on one end of a pipe section and the second fixture to be formed on the other end of the same pipe section so that series connected pipe sections can be welded together to form a pipe line without destroying the internal coating.
    • 一种用于连接内部涂覆有热敏涂层材料的管段的管道焊接连接器。 连接器布置成使得在焊接过程中,涂层保持低于其降解温度。 连接器在一个管段的端部具有第一固定件,在另一个管段的末端具有第二夹具。 当第一和第二固定装置处于邻接关系时,可以对接焊接在一起形成管焊接头。 第二个固定装置是一个向外分开成一个钟形的圆柱体,相对的边缘端部具有恒定的内径,并且围绕管道的外部安装。 管段的一部分从鼓风边缘端延伸并形成刺针。 第一夹具具有可伸缩地容纳托管架的扩大内部,并且进一步包括直径等于第二夹具的鼓起边缘端的直径的鼓形边缘终端。 这种独特的结构允许在管段的一端形成第一夹具,而在同一管段的另一端形成第二夹具,使得串联连接的管段可以焊接在一起形成管线而不破坏 内部涂层。