Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
  • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
  • F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
  • F16L55/17—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose
  • F16L55/171—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose the ring or the sleeve being tightened by a wedge section
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
  • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
  • F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
  • F16L55/175—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by using materials which fill a space around the pipe before hardening
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
  • F16L55/18—Appliances for use in repairing pipes

Definitions

• the invention relates to devices for repairing pipelines, in particular, for repairing defective sections and defects in welds of pipelines without stopping pumping of the product (oil, gas or water), as well as for strengthening welds at the stage of pipeline construction.
• a known polymer sleeve for repairing pipes with local corrosion defects consisting of several layers of glass tape connected to each other by an adhesive layer, and covering the pipe around the circumference, and the sleeve is made of two separate, preformed halves, provided at the ends of the loop blocks entering one another fixed between each other by embedded axes, oriented parallel to the axis of the pipeline (RU 2219423 C2, 12.20.2003).
• the absence of a metal shell does not allow to bring the area to be repaired to a defect-free level, since a fiberglass sleeve installed without preliminary tension will linearly stretch and develop a defect to a through one due to the fact that the fiberglass elastic modulus is at least seven times lower than the steel elastic modulus; - the coupling is required to be heated to high temperatures, which is not always possible due to limitations associated with the type of resins used and the technical complexity of heating large structures in the field.
• the closest analogue to the present invention is the solution RU 2374551 C2, 11.27.2009, which discloses a device for repairing pipelines containing two process rings welded to the pipeline, between which a bandage is formed of fiberglass material impregnated with a polyester resin, and a metal ring is attached to the process rings frame.
• the bandage is formed at the repair site in the field, so it takes time to polymerize the resin and, as a result, stop pumping the product;
• - curing time depends on the type of resins used and the temperature of the environment, usually 20 - 30 ° C, which means that in conditions that do not meet the specified conditions, the creation of temporary shelters and their heating are required.
• the present invention aims to eliminate the above disadvantages. Disclosure of invention
• the technical result achieved by the invention is to increase the operational reliability of the repaired pipeline and is achieved by the fact that the device for repairing pipelines comprises a sleeve mounted on the pipeline with a cylindrical inner surface corresponding to the diameter of the pipeline and a metal shell made with the possibility of installing its inner surface on the corresponding her outer surface of the coupling, and the coupling is made of cured composite the compression working material, the outer surface of the coupling and the inner surface of the metal shell are conical, while the coupling consists of two half-couplings connected to each other, each half-coupling contains protrusions and grooves corresponding to grooves and protrusions of the other half of the coupling, respectively.
• the composite material from which the coupling is made is selected from the group: fiberglass, carbon fiber, basalt plastic.
• the metal shell is made of two half-shells interconnected by welds.
• the length of the metal shell is less than the length of the coupling by 100-200 mm.
• the ends of the coupling protrude relative to the ends of the metal shell.
• the device further comprises means for tightening the coupling halves located at the ends of the coupling protruding with respect to the ends of the metal shell.
• FIG. 1 - shows a General view of the proposed device for repair of pipelines
• FIG. 2 - shows a longitudinal section of the proposed device for repair of pipelines
• FIG. 3- shows a section along line A-A according to FIG. one ;
• FIG. 4- shows the end surfaces of the coupling halves.
• a device for repairing pipelines comprises a sleeve 2 mounted on the pipe 1 with a cylindrical inner surface corresponding to the diameter of the pipeline, and a metal shell 3 configured to install its inner surface on the corresponding external surface of the sleeve.
• the coupling 2 is made of a cured composite material working in compression and ensuring the transfer of load from the defective area to the metal shell.
• the outer surface of the coupling 2 and the inner surface of the metal shell 3 can be made conical.
• the outer surface of the metal shell may have a different shape, in particular, conical.
• the coupling 2 consists of two half-couplings 4, 5 connected to each other.
• the half-coupling 4 contains protrusions 6, 7, corresponding respectively to the grooves 8, 9 of the half-coupling 5, which, in turn, contains protrusions 10, 11, corresponding respectively to the grooves 12, 13 of the half-coupling 4 (see Fig. 4).
• the metal shell is made of two half-shells 14, 15, interconnected by welds 16, 17.
• the device may further comprise means for tightening the coupling halves (for example, tape clamps) located at the ends of the coupling 2, protruding relative to the ends of the metal shell 3.
• means for tightening the coupling halves for example, tape clamps located at the ends of the coupling 2, protruding relative to the ends of the metal shell 3.
• the insulation coating is removed by an amount exceeding the length of the sleeve 2.
• the surface of the pipeline 1 is cleaned of residual insulation and corrosion.
• the defect cavity 18 is filled with a leveling material, for example, Etal plasticine.
• An adhesive composition is applied to the cleaned surface of the pipeline 1, for example Etal 45, and the coupling 2 is mounted.
• Two half-couplings 4, 5 are pulled together by any device, for example, a hand winch, fixed at the ends with tape clamps, for example, with adhesive tape, after which the winch is dismantled.
• a refractory fabric for example, asbestos
• the half-shells 14, 15 are welded with longitudinal seams 16, 17 to form a solid metal shell 3.
• the outer surface of the sleeve 2 is applied the adhesive composition, and the metal shell 3 is shifted along the axis of the pipe 1 to the sleeve 2 until the inner surface of the metal shell 3 is completely aligned with the outer surface of the sleeve 2.
• the repaired area is insulated I, for example, with shrink tape, overlapping the old insulation.
• a device mounted on a pipeline provides load transfer from a weakened defective section of the pipeline to an external defect-free metal shell.
• the protrusions and grooves made on the half-couplings, and the conical outer surface of the coupling and the inner surface of the metal shell ensure that there are no gaps between the coupling and the metal shell, between the pipeline and the coupling, which improves the operational reliability of the repaired pipeline and brings it to a level of defect-free.
• the present invention allows for installation work at any temperature and significantly reduce the total time of repair work, since all elements of the device, including couplings from cured composite materials, are made in workshop conditions.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Lining Or Joining Of Plastics Or The Like (AREA)
• Pipe Accessories (AREA)
• Mechanical Operated Clutches (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=53801717

Family Applications (1)

Country Status (3)

Cited By (1)

Families Citing this family (1)

Citations (6)

Family Cites Families (8)

• 2015
  • 2015-06-30 WO PCT/RU2015/000406 patent/WO2016010455A1/ru active Application Filing
  • 2015-07-06 UA UAU201506594U patent/UA104533U/uk unknown
  • 2015-07-09 DE DE202015103610.8U patent/DE202015103610U1/de not_active Expired - Lifetime

Patent Citations (6)

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