RU97105055A - METHOD OF ANTI-CORROSION PROTECTION OF THE INTERNAL SURFACE OF WELDED PIPES - Google Patents

METHOD OF ANTI-CORROSION PROTECTION OF THE INTERNAL SURFACE OF WELDED PIPES

Info

Publication number
RU97105055A
RU97105055A RU97105055/06A RU97105055A RU97105055A RU 97105055 A RU97105055 A RU 97105055A RU 97105055/06 A RU97105055/06 A RU 97105055/06A RU 97105055 A RU97105055 A RU 97105055A RU 97105055 A RU97105055 A RU 97105055A
Authority
RU
Russia
Prior art keywords
sleeve
sealing
corrosion
paste
welding
Prior art date
Application number
RU97105055/06A
Other languages
Russian (ru)
Other versions
RU2122150C1 (en
Inventor
В.Н. Протасов
О.В. Штырев
Original Assignee
Государственная академия нефти и газа им.И.М.Губкина
Filing date
Publication date
Application filed by Государственная академия нефти и газа им.И.М.Губкина filed Critical Государственная академия нефти и газа им.И.М.Губкина
Priority to RU97105055A priority Critical patent/RU2122150C1/en
Priority claimed from RU97105055A external-priority patent/RU2122150C1/en
Application granted granted Critical
Publication of RU2122150C1 publication Critical patent/RU2122150C1/en
Publication of RU97105055A publication Critical patent/RU97105055A/en

Links

Claims (4)

1. Способ противокоррозионной защиты внутренней поверхности сварных соединений труб с внутренним противокоррозионным покрытием, включающий установку перед сваркой во внутренней полости соединяемых труб втулки с уплотнениями на концах и с проточкой на наружной поверхности с образованием полости между наружной поверхностью втулки и внутренней поверхностью трубы, отличающийся тем, что перед сваркой на концах соединяемых труб в области проточки втулки за пределами зоны термического влияния процесса сварки выполняют отверстия, через одно из которых после сварки в полость вводят под давлением герметизирующую пасту и подачу пасты продолжают до выхода ее через второе отверстие, после чего производят опрессовку труб избыточным давлением жидкости и при отсутствии через отверстия течи последние заглушают.1. A method of anticorrosive protection of the inner surface of welded pipe joints with an internal anticorrosive coating, comprising installing a sleeve with seals at the ends and with a groove on the outer surface before welding in the inner cavity of the pipes to be connected, with the formation of a cavity between the outer surface of the sleeve and the inner surface of the pipe, characterized in that before welding, holes are made at the ends of the pipes to be connected in the area of the bore of the sleeve outside the zone of thermal influence of the welding process, through of which upon welding into the cavity under pressure introduced into the sealing paste and the paste feeding is continued until its exit through the second opening, whereupon crimp tubes pressurized fluid and in the absence of a leak through the holes last choke. 2. Способ по п.1, отличающийся тем, что используют втулку из коррозионно-термостойкого материала или втулку, имеющую коррозионностойкое и термостойкое покрытие. 2. The method according to claim 1, characterized in that they use a sleeve made of a corrosion-resistant material or a sleeve having a corrosion-resistant and heat-resistant coating. 3. Способ по пп.1 и 2, отличающийся тем, что уплотнение концов втулки осуществляют самоуплотняющимися эластичными манжетами, наружный диаметр которых больше наибольшего внутреннего диаметра трубы. 3. The method according to claims 1 and 2, characterized in that the sealing of the ends of the sleeve is carried out by self-sealing elastic cuffs, the outer diameter of which is greater than the largest inner diameter of the pipe. 4. Способ по п.1, отличающийся тем, что подачу и последующую сушку герметизирующей противокоррозионной пасты осуществляют при нагревании. 4. The method according to claim 1, characterized in that the supply and subsequent drying of the sealing anti-corrosion paste is carried out with heating.
RU97105055A 1997-04-02 1997-04-02 Method of corrosion protection of internal surfaces of welded joints of pipes RU2122150C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU97105055A RU2122150C1 (en) 1997-04-02 1997-04-02 Method of corrosion protection of internal surfaces of welded joints of pipes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU97105055A RU2122150C1 (en) 1997-04-02 1997-04-02 Method of corrosion protection of internal surfaces of welded joints of pipes

Publications (2)

Publication Number Publication Date
RU2122150C1 RU2122150C1 (en) 1998-11-20
RU97105055A true RU97105055A (en) 1999-03-27

Family

ID=20191414

Family Applications (1)

Application Number Title Priority Date Filing Date
RU97105055A RU2122150C1 (en) 1997-04-02 1997-04-02 Method of corrosion protection of internal surfaces of welded joints of pipes

Country Status (1)

Country Link
RU (1) RU2122150C1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2584016C1 (en) * 2015-04-13 2016-05-20 Виктор Николаевич Протасов Method by protasov v.n. for anti-corrosion protection of bell and bell

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