| 摘要 |
FIELD: machine building.SUBSTANCE: device for connection of two pipes includes an external thread located on the first pipe. A shutoff element with external shutoff profiles is installed on the second pipe of the pipeline with possibility of radial movement. On external thread there screwed is a coupling sleeve having an internal thread and internal shutoff profiles for engagement with the above external shutoff profiles. The coupling sleeve moves in the first axial direction to the first pipe by rotation on the external thread, when its internal profiles are in intermediate engagement with external profiles until this movement is restricted with thrust surfaces of internal and external profiles after possible axial gaps are chosen as a result of that first axial movement. Thrust surfaces have an inclination allowing to tighten the coupling sleeve in axial direction opposite to the first axial direction, at outward movement of external shutoff profiles in radial direction from position of intermediate engagement to position of further engagement with internal shutoff profiles.EFFECT: improving pipe connection reliability.6 cl, 7 dwg |
