DEVICE FOR CONNECTION OF PIPELINE TIPS Russian patent published in 2024 - IPC F16L21/00 

FIELD: machine building.

SUBSTANCE: invention relates to a device for connecting pipeline tips. Device for connection of ends of pipelines with connecting elements such as nipples or fittings from dissimilar materials can be used in high-load detachable structures of pipelines of machine building for operation in hydraulic and pneumatic systems of various units. Proposed device comprises nipple fitted at pipeline end section and coupling nut fitted on said nipple. Nipple is made in the form of a hollow cylinder with an annular flange at one end. Nipple and union nut are made from alloy having shape memory with temperature of phase transformations below operational ones, at that, in the zone of contact of the nipple with the conjugated section of the pipeline, the nipple is made with taper of 72°, and the fitting is made with a taper angle of 74°30¹. On inner surface of nipple there are power annular projections, which width is 0.3–0.6 mm, and the height is within 0.2–0.6 mm, between which along the annular generatrix there are diametrically arranged spike-shaped projections, which height is within 0.1–0.5 mm, and width is 0.5–0.8 mm.

EFFECT: invention provides higher reliability of connection of ends of pipelines with mounting elements.

1 cl, 5 dwg