WO2018104933A1 - The method of repair from inside of large diameter pipes - Google Patents
The method of repair from inside of large diameter pipes Download PDFInfo
- Publication number
- WO2018104933A1 WO2018104933A1 PCT/IL2017/051310 IL2017051310W WO2018104933A1 WO 2018104933 A1 WO2018104933 A1 WO 2018104933A1 IL 2017051310 W IL2017051310 W IL 2017051310W WO 2018104933 A1 WO2018104933 A1 WO 2018104933A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cylinder
- pigs
- clause
- repair
- diameter
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 241000282887 Suidae Species 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 4
- 238000003780 insertion Methods 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 239000007787 solid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000007799 cork Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
- F16L55/1645—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a sealing material being introduced inside the pipe by means of a tool moving in the pipe
- F16L55/16455—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a sealing material being introduced inside the pipe by means of a tool moving in the pipe a part of the tool defining, together with the inner wall of the pipe, an enclosed space into which sealing material is injected
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/007—After-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
- B05D7/222—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of pipes
Definitions
- This invention relates to the field of pipe repair methods.
- the method of repairing pipes from the inside is a part of pipe repair methods.
- Figure 1 shows a diagram explaining the operation of the prototype method.
- FIG. 2 is a schematic diagram explaining the operation of the method, according to the proposed technical solution.
- these parts are installed cylinder 9.
- It can be hollow and a spring 10 can be arranged inside it.
- the latter by means of the stops 101 and 102, can act on 2 and 3 pigs .
- the part 8 can have an empty cavity 81, closed by the valve 84. When the pigs 2 and 3 move along the pipe, they carry the parts 7 and 8 along of the cylinder 9.
- this cylinder does not allow the particles 5 and 6 to move away from the inner surface of the tube 1. And when one of the particles moves near the hole 4 , she enters this hole and plugs it. Since the particles have a liquid hardening material, a solid plug is formed here.
- the safety valve 84 which is installed in the cavity 81, is triggered.
- the size of the diameter of the cylinder 9 must correspond to the relation
- d - is the diameter of the cylinder 9 in cm
- D - is the diameter of the pipe 1 to be repaired in cm
- the reliability of repairing a large-diameter pipe will be the same as the reliability of repairing a pipe of smaller diameter.
- the intended goal will be met. It is clear, that the additional cylinder can be with changing length.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The method relates to internal lining of tubes through the insertion of two pigs, between which a curing material is inserted, said pigs are connected through a cylinder which forces the particles of the curing material towards the inner surface of the tube, thus providing efficient repair from inside.
Description
The method of repair from inside of large diameter pipes
This invention relates to the field of pipe repair methods. In particular, the method of repairing pipes from the inside.
A method for repairing pipes from the inside is known. A description of this can be found at www.curapjpe.com. In this case elastic particles are inserted into the tube. The particles are impregnated with reinforcing material. The elastic particles together with the liquid flow move inside the pipe.
When they pass through the hole in the tube, they, along with the entire flow, enter it and block from the inside. Over time, the particles harden and create a solid and reliable cork. Recently, this method is very common. But he also has shortcomings. Particles that are far from the inner surface of the pipe have practically no chance of being used. Especially this happens during the repair of large diameter pipes, for example, more than 8 inches.
It is an object of the present invention to overcome this disadvantage. This is achieved due to the fact, that an additional cylinder is installed between the front and rear pigs.
Figure 1 shows a diagram explaining the operation of the prototype method.
Here is a pipe requiring repair; 2- front pigs. ; 3-back pigs.; 4- hole in pipe 1, which must be closed during repair; 5 and 6 are the particles, in which the hardening material is located. It can be seen from FIG. 1, that the particle 5 and the particle 6 have a different possibility of being used for repair. So, a particle, that is far from the inside of all the pipes ,is practically useless.
Figure 2 is a schematic diagram explaining the operation of the method, according to the proposed technical solution. Here 1- pipe, 2-front pig., 3-rear pig; 4-holes in pipe 1, that during repair;5 and 6- elastic particles, impregnated with the composition, which after some time hardens, resulting in a solid plug;7 and 8-additional toroidal parts. In these holes these parts are installed cylinder 9. It can be hollow and a spring 10 can be arranged inside it. The latter, by means of the stops 101 and 102, can act on 2 and 3 pigs . The part 8 can have an empty cavity 81, closed by the valve 84. When the pigs 2 and 3 move along the pipe, they carry the parts 7
and 8 along of the cylinder 9. The presence of this cylinder does not allow the particles 5 and 6 to move away from the inner surface of the tube 1. And when one of the particles moves near the hole 4 , she enters this hole and plugs it. Since the particles have a liquid hardening material, a solid plug is formed here.
If the pressure in the pipe 1 is too large, then the spring 10 through the stops 101 and 102 resists the approach of the pigs. If this does not help completely and the pressure between the pigs 2 and 3 is greater, than desired, the safety valve 84, which is installed in the cavity 81, is triggered.
The size of the diameter of the cylinder 9 must correspond to the relation
d = kD-n (1)
Where: d - is the diameter of the cylinder 9 in cm, D - is the diameter of the pipe 1 to be repaired in cm;
K = 0, 45 ... 0, 5; n = 4 ... 8.
In this case, the reliability of repairing a large-diameter pipe will be the same as the reliability of repairing a pipe of smaller diameter. The intended goal will be met. It is clear, that the additional cylinder can be with changing length.
Claims
1. The method of repair from inside of large diameter pipes, in which the space between the rear and front horns to install additional toroidal elements in the holes ,in which a cylinder is installed, the diameter of which is smaller, than the diameter of the pipe.
2. The method of claim 1, wherein the cylinder diameter is selected by the empirical dependence of the bracket (1).
3. The method of claim 2 ,in which the cylinder is axially movable relative to the torus of the
shaped parts.
4. The meters according to clause 3, which establishes additional force elements,acting on the pigs.
5. The method according to clause 4, in which a spring is used as an element of force action.
6. The method according to clause 5, in which the spring is mounted inside the additional cylinder.
7. The method according to clause 6, in which the spring acts on the pigs through the stops.
8. The method of clause 7, in which the cylinder performs the ability to change its length with relative movement of the pigs.
9. The method according to clauses 1- 7 with the description, figures and empirical dependence.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IL249372A IL249372A0 (en) | 2016-12-01 | 2016-12-01 | Method for repair inside |
| IL249372 | 2016-12-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2018104933A1 true WO2018104933A1 (en) | 2018-06-14 |
Family
ID=62491657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IL2017/051310 WO2018104933A1 (en) | 2016-12-01 | 2017-12-03 | The method of repair from inside of large diameter pipes |
Country Status (2)
| Country | Link |
|---|---|
| IL (1) | IL249372A0 (en) |
| WO (1) | WO2018104933A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110586394A (en) * | 2019-10-17 | 2019-12-20 | 马付林 | Hydropower station pressure steel pipe integral inner wall anticorrosion construction device and anticorrosion construction method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3394025A (en) * | 1964-06-15 | 1968-07-23 | Schlumberger Technology Corp | Method and apparatus for coating a pipe |
| US4584963A (en) * | 1983-12-28 | 1986-04-29 | Tokyo Gas Co., Ltd. | System for repairing joints in pipes laid underground |
| JPS62171770A (en) * | 1986-01-22 | 1987-07-28 | Kubota Ltd | Device for lining inner surface of existing pipe |
| WO1990012241A1 (en) * | 1989-04-06 | 1990-10-18 | Insituform Group Limited | Improvements relating to the lining of pipelines or passageways |
| US5230842A (en) * | 1989-02-21 | 1993-07-27 | Munde Bruce A | Interior pipeline coating process |
| WO1998050725A1 (en) * | 1997-05-03 | 1998-11-12 | Advanced Engineering Solutions Limited | Method of lining pipes |
| JP2001300368A (en) * | 2000-04-24 | 2001-10-30 | Soken:Kk | Spray gun device for in-pipe coating |
| JP2006095495A (en) * | 2004-09-30 | 2006-04-13 | Sanyo Chem Ind Ltd | Washing method of pipe |
| JP2016203441A (en) * | 2015-04-20 | 2016-12-08 | 東芝プラントシステム株式会社 | Lining device and lining method for inner surface of tubular body |
-
2016
- 2016-12-01 IL IL249372A patent/IL249372A0/en unknown
-
2017
- 2017-12-03 WO PCT/IL2017/051310 patent/WO2018104933A1/en active Application Filing
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3394025A (en) * | 1964-06-15 | 1968-07-23 | Schlumberger Technology Corp | Method and apparatus for coating a pipe |
| US4584963A (en) * | 1983-12-28 | 1986-04-29 | Tokyo Gas Co., Ltd. | System for repairing joints in pipes laid underground |
| JPS62171770A (en) * | 1986-01-22 | 1987-07-28 | Kubota Ltd | Device for lining inner surface of existing pipe |
| US5230842A (en) * | 1989-02-21 | 1993-07-27 | Munde Bruce A | Interior pipeline coating process |
| WO1990012241A1 (en) * | 1989-04-06 | 1990-10-18 | Insituform Group Limited | Improvements relating to the lining of pipelines or passageways |
| WO1998050725A1 (en) * | 1997-05-03 | 1998-11-12 | Advanced Engineering Solutions Limited | Method of lining pipes |
| JP2001300368A (en) * | 2000-04-24 | 2001-10-30 | Soken:Kk | Spray gun device for in-pipe coating |
| JP2006095495A (en) * | 2004-09-30 | 2006-04-13 | Sanyo Chem Ind Ltd | Washing method of pipe |
| JP2016203441A (en) * | 2015-04-20 | 2016-12-08 | 東芝プラントシステム株式会社 | Lining device and lining method for inner surface of tubular body |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110586394A (en) * | 2019-10-17 | 2019-12-20 | 马付林 | Hydropower station pressure steel pipe integral inner wall anticorrosion construction device and anticorrosion construction method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| IL249372A0 (en) | 2017-03-30 |
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