METHOD FOR CONNECTION OF METAL PIPES WITH INNER PLASTIC LINING Russian patent published in 2019 - IPC F16L13/00

Abstract RU 2686129 C1

FIELD: transportation.

SUBSTANCE: invention relates to the field of pipeline transport and can be used in the construction and repair of pipelines for various purposes, transporting aggressive media. Proposed method comprises trimming of plastic lining at depth of thermal effect of welding, attachment of lining ends inside metal pipes by rings, installation of protective bushing with sealing rings at connection of pipes inside rings. Rings are made with external diameter not exceeding minimum inner diameter of metal pipes. On ends of rings located in the area of plastic cladding, before installation the rings are equipped with internal two-step grooves with reduction of their diameter from the end of metal pipes. Rings of rings are fixed to ends of metal pipes without deformation. Protective sleeve is made with inner diameter not less than inner diameter of rings, length – not more than total length of grooves of two rings. O-rings are arranged on protective sleeve with possibility of being arranged in compressed state between steps of grooves after installation of protective bushing at connection point of tubes inside rings.

EFFECT: invention provides anticorrosive protection of pipes connection at simultaneous increase of flow passage of pipes in connection points.

1 cl, 2 dwg

Similar patents RU2686129C1

Title	Year	Author	Number
PIPE WITH INTERNAL PLASTIC SHELL	2015	Ibragimov Nail Gabdulbarievich Gareev Ravil Mansurovich Shammasov Rafael Mavlavievich Shakirov Farid Shafkatovich Knyazev Sergej Yurevich Traev Lenar Ravilevich	RU2594036C1
METHOD OF CONNECTION OF STEEL PIPES PROVIDED WITH INTERNAL PLASTIC LINING	2002	Ibragimov N.G. Dautov F.I. Fadeev V.G. Gareev R.M. Dautov D.F.	RU2225562C1
STEEL PIPE WITH INTERNAL PLASTIC SHELL	2009	Takhautdinov Shafagat Fakhrazovich Ibragimov Nail' Gabdulbarievich Dautov Farvaz Insapovich Gareev Ravil' Mansurovich Khamitov Ravil' Anvarovich Valeev Rinat Raisovich Dolgikh Sergej Aleksandrovich	RU2393371C1
METHOD OF CONNECTING PIPES WITH INTERNAL COATING	2018	Shammasov Rafael Mavlavievich Shakirov Farid Shafkatovich Knyazev Sergej Yurevich	RU2686374C1
METHOD OF PROTECTING AGAINST CORROSION WELDED PIPE JOINT WITH INTERNAL ANTICORROSIVE COATING	2016	Abramov Mikhail Alekseevich Shammasov Rafael Mavlavievich Lutfullin Azat Abuzarovich Evseev Aleksandr Aleksandrovich Talypov Shamil Mansurovich Knyazev Sergej Yurevich	RU2621451C1
METHOD OF CONNECTING PIPES HAVING INNER COAT	2002	Ibragimov N.G. Dautov F.I. Fadeev V.G. Gareev R.M. Dautov D.F.	RU2226637C2
STEEL PIPE WITH PLASTIC LINING	2003	Ibragimov N.G. Dautov F.I. Fadeev V.G. Gareev R.M. Fedotov G.A. Akhmetvaliev R.N. Dautov D.F.	RU2238470C1
METHOD OF MAKING METAL PIPE WITH INTERNAL PLASTIC SHELL	2015	Ibragimov Nail Gabdulbarievich Gareev Ravil Mansurovich Shammasov Rafael Mavlavievich Shevchenko Andrej Alekseevich Shakirov Farid Shafkatovich Knyazev Sergej Yurevich	RU2594039C1
STEEL PIPE CORROSION PROTECTION METHOD	2002	Ibragimov N.G. Dautov F.I. Fadeev V.G. Gareev R.M. Dautov D.F.	RU2217651C1
METHOD FOR JOINING METAL PIPES WITH INTERNAL PLASTIC PIPE	2013	Ajduganov Vjacheslav Mikhajlovich	RU2518999C1

RU 2 686 129 C1

Authors

Shammasov Rafael Mavlavievich

Shakirov Farid Shafkatovich

Knyazev Sergej Yurevich

Dates

2019-04-24—Published

2018-06-13—Filed