CRIMPING FITTING, METHOD OF ITS INSTALLATION AND DEVICE FOR IMPLEMENTATION OF METHOD Russian patent published in 2024 - IPC F16L21/00 

FIELD: pipes; joints or fittings for pipes.

SUBSTANCE: group of inventions relates to the field of industrial production associated with arrangement and installation of pipelines for various purposes, including systems of oil and gas industry, chemical industry, at power engineering and housing and public utilities enterprises for transportation of gas-oil emulsions, oil products, formation and waste water, acid and alkaline solutions, industrial water, cold and hot water supply systems, and can be used for connection of thermoplastic reinforced pipes to steel pipes and shutoff valves using a fitting. Crimping fitting contains a sleeve placed inside the attached pipe and provided with a collar, and a crimping bushing with a profiled inner surface, at the same time the crimping bushing encloses the pipe with the sleeve from the outside. End of the sleeve facing the working end of the connected pipe is conically reduced in the radial direction for the pipe fitting, wherein a part of the outer surface of the sleeve near the conical end is shaped and formed by protrusions, in response to which there are annular notches on the inner shaped surface of the crimping bushing, wherein crimping bushing fitted on sleeve and permanently welded therewith has vent holes while its free end extends beyond sleeve end in axial direction. Invention also describes a device for mounting the disclosed crimping fitting and a method of mounting the crimping fitting.

EFFECT: invention increases reliability and safety of crimping fittings, as well as increases service life of pipelines.

7 cl, 7 dwg