Pipe connection

Abstract

The invention relates to a pipe connection for connecting an in particular metal thin-walled pipeline (1), comprising a pipeline (1) having a shaped connecting segment, which connecting segment grows larger from the connecting end of the connecting segment in the form of a frustum of a cone at a cone angle and forms a circumferential sealing surface (7) there on the outer circumferential surface of the connecting segment and has a shoulder having a stop surface (9) adjacent to the sealing surface. Furthermore, the pipe connection comprises a connection stub (20a), which has a connection thread (25a) and a connection bore (23a), which decreases in size from the opening of the connection bore in the form of a frustum of a cone at a cone angle that is matched to the cone angle of the connecting segment in the region of the sealing surface (7) and which forms, there on the inner circumference, a circumferential connection surface (27a) for contacting the sealing surface (7), and a union threaded part (10a), which has a clamping thread (13a) and a passage opening, which has, on the inner circumference, a circumferential clamping surface (15a) for contacting the stop surface (9). The cone angle of the connecting segment in the region of the sealing surface (7) and the cone angle of the connection bore (23a) in the region of the connection surface (27a) are 38 degrees to 50 degrees. The invention further relates to a pipeline (1) and a connection stub (20a) for a pipe connection according to the invention.

Description

technical field [0001] The invention relates to a pipe connection for connecting thin-walled conduits, in particular of metal, comprising a conduit with a deformed connection section which is truncated from its connection end at a conical angle enlarged and here forms a surrounding sealing surface on its outer peripheral surface and has a shoulder with a stop surface adjacent to the sealing surface; and a connecting sleeve with a connecting thread and a connecting hole, the connecting Starting from its opening, the bore decreases frusto-conically with a cone angle adapted to the cone angle of the sealing surface, and a circumferential connecting surface for abutting against the sealing surface is formed on the inner circumference; and the lock Tight screw connector It has a tensioning thread and has a through-opening which has a circumferential tensioning surface on the inner circumference for bearing against the stop surface. The invention also relates to conduits and conn...

AI Technical Summary

Problems solved by technology

The known pipe connections produced by deformation have the disadvantage that, especially for thin-walled pipe connections, inward collapse of the sealing surface can occur during the deformation process This means that the pipe wall does not rest against the inner contour of the deformation tool during the deformation process, but collapses inwards towards the pipe axis

This inward collapse disadvantageously impairs the sealing function of the pipe connection, since in the installed state the sealing surface of the line no longer bears against the connection surface of the connecting sleeve over its entire surface.

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