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Development and production of
composite reinforcing sleeves for major pipeline repair
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31.01.2018 11:12

CONE-COMPOSITE sleeves repair provides for:

• The restoration of the bearing capacity of the section with defects up to the level of a defectfree
pipe;
• Leak tightness of the repaired section for the remaining operating life of the pipeline.

Repair using CONE-COMPOSITE sleeves is classified as an overhaul repair method of pipelines.

 

 

Principle of operation

Clearances, including a clearance between the pipeline and the composite sleeve, are made leak proof by means of a pressing force created when the cone shell ring is pulled on the sleeve which is also conical. High-strength characteristics of the material of the composite sleeve and polymerizable bonding paste used during the assembly of the CCS, ensure that the load from the defective area of the pipe is completely transferred to the composite shell ring which provides for the restoration of its bearing capacity up to the level of a defect-free pipe and boosts the operating reliability of the pipeline in general.

Repair using CONE-COMPOSITE sleeves is classified as an overhaul repair method of pipelines.

 

The CONE-COMPOSITE sleeves has two modifications: Cone-Composite  and Cone-Composite Plus

  Cone-Composite   Cone-Composite Plus Clamp Lock
conus

The internal surface is aligned with the external surface of the pipeline under repair.

conus plus

The internal surface has a groove whose form and dimension align with
the external surface of the Clamp Lock Sleeve.

Антисвищ

 

 

Intended use of the CONE-COMPOSITE sleeves
_IGP1849_500

 

CONE-COMPOSITE sleeves are designed for:

  • Repairing non-through defects of steel above-ground, underground and underwater pipelines with a diameter of 50 ÷ 1 420 mm, an operating pressure of ≤ 10 MPa operated at a temperature ranging from - 60 °C to + 450 °C;
  • Reinforcing metal in sections with unacceptable installations on the pipeline surface which are to be eliminated with the regular repair method (in such a case, the CCS Cone Composite can be installed as an alternative to coil replacing);
  • Reinforcing metal in the area of pipeline circular weld joints, including at the stage of their construction;
  • Repairing defects of non-metal pipelines.

 

 

Intended use of the CONE-COMPOSITE PLUS sleeves
_IGP1599-1

 Cone-Composite Plus sleeves are designed for:

  • Repairing through defects of pipeline sections, including non-metal ones, of any design with the maximum internal operating pressure of ≤ 10 MPA which were preliminary eliminated with the use of Clamp Lock sealing sleeves;
  • Sealing steel pipelines in the weld adjacent zones of vertical welding joints.

 

 

 

 

Technical description of the CONE-COMPOSITE sleeve

The cone composite sleeve Cone-Composite contains the composite sleeve 2 (which is installed
on the pipeline 1) with a cylindrical internal surface corresponding to the diameter of the pipeline and
the shell ring 3 which can be installed as follows: its internal surface is installed on the relevant external
surface of the composite sleeve.

 

Сборочный чертеж в цвете-eng

 

The sleeve 2 is made from a composite material which is good in compression and ensures that the radial load from the defect area is transferred to the shell ring which is also made from a composite material which is bad in expanding and has an elasticity modulus of at least 130 hPa, with this value being as near as possible to the elasticity modulus of pipe steels, but for composites.

The external surface of the composite sleeve 2, as well as the external and internal surfaces of the shell ring 3, are all conical. The composite sleeve 2 is comprised of two components parts 2a and 2b which are interconnected during the assembly of the pipeline 1 with the defect 4.

Композитная обечайка                                     

The composite shell ring is comprised of two component parts 3a and 3b which are interconnected with the use of the shafts 5, with one end having a threaded part, and the other – a L-shaped fixing device.

The shafts 5 pass through the loops 7 with metal bushings inside that allow bringing down clearances between the internal surface of the loops and the shafts passing through them, to a minimum, which ensures the absence of any flexural stresses and cracks inside the loops.

The nuts 10 are screwed through the washers 9 on threaded parts of the shafts 5 which are passed through the loops 7 of the interconnected parts of the composite shell ring 3a and 3b.

Therefore, the assembled nut 10, the washer 9 and the shaft 5 perform two functions at once:
• They connect and fix two parts of the shell ring and .
• They serve as a device for screwing the ring shell on the sleeve and ensure the calibrated drafting
of the repair structure.

 

 

CONE-COMPOSITE PLUS sleeve installation

 

STEP 1

The defect area is cleaned for the CLAMP LOCK sleeve installation.
 

 2 Шаг

STEP 2

Mounting the sleeve CLAMP LOCK on the pipeline. Tightening of bolted connections. Resumption of pumping.

3 Шаг

STEP 3

Filling of the sinuses between the flanges CLAMP LOCK with the composite paste.
 

5 Шаг

STEP 4

Degreasing the internal surfaces of both parts of the composite sleeve and applying a composite paste on them.

  4 Шаг кк

STEP 5

Mounting the composite clutch over the Anti-swing arm and preparing the shell for assembly.

5 шаг кк

STEP 6

Assembling the shell next to the defective area, degreasing the outer surface of the composite sleeve and the application of composite paste on it.

6 шаг кк

STEP 7

Sliding of the composite shell along the axis of the pipe over the composite sleeve so that the L-shaped fixing of the connecting axes is caught on the edge of the composite sleeve.

  Шаг 7 кк

STEP 8

Tightening the nuts at the ends of the connecting axles with conventional wrenches and then using a torque wrench to the force specified in the product certificate.

8 шаг кк

STEP 9

Isolation of the repaired section of the pipeline with an overlap on the old insulation.

13 Шаг

 

 

 

CONE-COMPOSITE sleeve specifications

 

Черт Конус-Композит в Спец_цвет

External diameter of the pipeline under repair
(mm)

Composite shell ring

Composite sleeve

Wall thickness Sо *
(mm)

min d*
(mm)

max D*
(mm)

Length Lо*
(mm)

Cone ratio α
(degree)

Thread М
(mm)

Lenth Lм*
(mm)

Wall thickness
(mm)

Smin *

Smax *

50

5

60

90

300

3

10

350

5

15

89

5

100

130

300

3

10

350

5

15

114

8

125

155

300

3

14

350

5

15

159

8

170

200

300

3

14

350

5

15

168

8

180

210

300

3

14

350

5

15

219

10

230

260

300

3

14

350

5

15

273

10

285

325

500

2

24

550

10

30

325

10

335

375

500

2

24

550

10

30

355

10

365

405

500

2

24

550

10

30

377

10

390

430

500

2

24

550

10

30

426

10

440

480

500

2

24

550

10

30

530

10

550

590

500

3

24

550

10

30

620

10

640

680

500

3

30

550

10

30

720

10

740

780

500

3

30

550

10

30

820

12

840

880

500

3

30

550

10

30

1020

12

1040

1080

500

3

30

550

10

30

1220

12

1240

1280

500

3

30

550

10

30

1420

12

1440

1480

500

3

30

550

10

30

* - As agreed with the customer, the dimensions can be changed.

 

 

 

CONE-COMPOSITE PLUS sleeve specifications

 

Черт Конус-Композит Плюс в Спец_цвет-eng

External diameter of the pipeline under repair
(mm)

Composite shell ring

Composite sleeve

Wall thickness Sо *
(mm)

min d*
(mm)

max D*
(mm)

Length Lо*
(mm)

Cone ratio α
(degree)

Thread М
(mm)

Lenth Lм*
(mm)

Wall thickness
(mm)

Smin *

Smax *

50

5

80

90

300

3

10

350

30

40

89

5

120

130

300

3

10

350

30

40

114

8

145

155

300

3

14

350

30

40

159

8

190

200

300

3

14

350

30

40

168

8

200

210

300

3

14

350

30

40

219

10

250

260

300

3

14

350

30

40

273

10

330

350

500

2

24

550

60

80

325

10

385

405

500

2

24

550

60

80

355

10

415

435

500

2

24

550

60

80

377

10

440

460

500

2

24

550

60

80

426

10

485

505

500

2

24

550

60

80

530

10

590

610

500

3

24

550

60

80

620

10

680

700

500

3

30

550

60

80

720

10

780

800

500

3

30

550

60

80

820

12

880

900

500

3

30

550

60

80

1020

12

1080

1100

500

3

30

550

60

80

1220

12

1280

1300

500

3

30

550

60

80

1420

12

1480

1500

500

3

30

550

60

80

* - As agreed with the customer, the dimensions can be changed.

 

 

 

CONE-COMPOSITE sleeve delivery package

 

Комплект Конус-Композит плюс-eng

1 - Composite sleeve

2 - Composition shell ring

3 - Coupling shaft

4 – Washer

5 – Nut

6 - Two-component bonding paste                                     

7 - Identification plate

8 - Data sheet                                                       

9 - Installation guide