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热词
    • 2. 发明公开
    • Concentric wrench for blind access opening in a turbine
    • KonzentrischerSchraubenschlüsselfürBlindzugangöffnungvon Turbinen
    • EP1018405A2
    • 2000-07-12
    • EP99308438.3
    • 1999-10-26
    • GENERAL ELECTRIC COMPANY
    • Laurer, Kurt NealDrlik, Gary JosephGibler, Edward Eugene
    • B25B13/48
    • B25B13/481B25B13/48Y10T29/49318Y10T29/49963
    • The concentric wrench includes an outer tube (60) having flats (62) at one end and a gripping surface (64) at an opposite end. An inner tube (66) has interior flats (68) at one end and a gripping surface (70) at its opposite end. With the inner and outer tubes (60, 66) disposed about a pressure transmitting conduit, the tubes may be inserted into a blind access opening in the outer turbine casing to engage the flats (62, 68) of the tubes (60, 66) against hex nuts of an internal fitting. By relatively rotating the tubes (60, 66) using the externally exposed gripping surfaces (64, 70), the threaded connection between the parts of the fitting bearing the respective hex nuts can be tightened or loosened.
    • 同心扳手包括在一端具有平面(62)的外管(60)和在相对端的抓握表面(64)。 内管(66)在一端具有内部平面(68)和在其相对端的夹持表面(70)。 通过设置在压力传递导管周围的内管和外管(60,66),管可以插入到外涡轮机壳体中的盲进入开口中以接合管(60,66)的平面(62,68) 针对内部配件的六角螺母。 通过使用外露的夹持表面(64,70)相对地旋转管(60,66),可以拧紧或缩小轴承相应的六角螺母的配件的螺纹连接。