WO2002064351A2 - Method and apparatus for lining an outer pipe with an inner pipe - Google Patents
Method and apparatus for lining an outer pipe with an inner pipe Download PDFInfo
- Publication number
- WO2002064351A2 WO2002064351A2 PCT/IB2002/000445 IB0200445W WO02064351A2 WO 2002064351 A2 WO2002064351 A2 WO 2002064351A2 IB 0200445 W IB0200445 W IB 0200445W WO 02064351 A2 WO02064351 A2 WO 02064351A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pipe
- inner pipe
- outer pipe
- pressure
- pressure chamber
- Prior art date
Links
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
- F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
- F16L55/1652—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section the flexible liner being pulled into the damaged section
- F16L55/1654—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section the flexible liner being pulled into the damaged section and being inflated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/26—Lining or sheathing of internal surfaces
- B29C63/34—Lining or sheathing of internal surfaces using tubular layers or sheathings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
- B29K2023/0608—PE, i.e. polyethylene characterised by its density
- B29K2023/065—HDPE, i.e. high density polyethylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
- B29K2705/08—Transition metals
- B29K2705/12—Iron
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
- B29L2009/003—Layered products comprising a metal layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
Definitions
- This invention relates to a method and apparatus for lining an outer pipe with an inner pipe.
- Hydrostatic reduction of the diameter of polymeric pipes prior to insertion into steel pipes is known.
- the advantage of hydrostatic reduction is that only radial stresses are imposed on the polymeric pipe. No axial stresses are imposed on the polymeric pipe. Consequently contraction of the polymeric pipe within a steel pipe in the axial direction over a period of time does not occur.
- Hydrostatic reduction of the diameter of a polymeric pipe is described in South African patents 93/8890 and 94/3981.
- the apparatus described in these prior art patents which is used to achieve the hydrostatic reduction in diameter is relatively large and expensive.
- a method of lining an outer pipe with an inner flexibly resilient pipe includes the steps of:
- the method may include the step of pulling the inner pipe into the outer pipe with a winch.
- the method may include the step of attaching a towing head to the inner pipe.
- the towing head may be welded to the inner pipe.
- the outer surface of the outer pipe may be reinforced against forces generated by the fluid under pressure in the pressure chamber.
- a mandrel may be inserted into the inner pipe to limit the reduction in diameter of the inner pipe and also to prevent the inner pipe from collapsing under pressure.
- the leading end of the inner pipe may be pulled into a run-out pipe attached to the outer pipe before the pressure in the pressure chamber is reduced.
- apparatus for lining an outer pipe with an inner flexibly resilient pipe includes a pressure housing for attachment to the outer pipe, the pressure housing having at least one fluid inlet and a static trailing seal for forming a seal between the inner pipe and the pressure housing, and a towing head for attachment to the inner pipe, a leading seal for forming a seal between the inner pipe or the towing head and the outer pipe as the inner pipe is pulled into the outer pipe, so that in use fluid can be introduced through the fluid inlet into a pressure chamber of increasing size, formed between the inner and outer pipes and sealed at opposite ends by the trailing static seal and the leading seal, to reduce and to maintain reduced the diameter of the inner pipe as the inner pipe is pulled into the outer pipe.
- Reinforcing means may be provided for reinforcing the outer surface of the outer pipe against forces generated on the outer pipe by the pressure of the fluid in the pressure chamber.
- the reinforcing means may comprise a jacket located around the outer pipe.
- the jacket may have a slightly larger internal diameter than the external diameter of the outer pipe.
- the reinforcing means may comprise a pressure jacket which forms an outer pressure chamber, between the outer pipe and the pressure jacket, into which fluid is introduced at the same pressure as the fluid which is introduced into the pressure chamber between the outer pipe and the inner pipe.
- the outer pressure chamber may contain a dynamic seal which can be moved at substantially the same rate as the leading seal so that the length of the outer pressure chamber increases at the same rate as the length of the pressure chamber between the inner and outer pipes.
- the apparatus may include a mandrel for location within the inner pipe to limit the reduction in diameter of the inner pipe.
- the mandrel may be a pipe.
- the mandrel may be lined on its outer surface with a flexibly resilient material to cater for variations in the wall thickness of the inner pipe.
- the flexibly resilient material may be rubber or polyurethane.
- the apparatus may include a run-out pipe for attachment to the end of the outer pipe remote from the end to which the pressure housing is attached.
- the run-out pipe and the pressure housing may consist of two sections which can be split from one another along their longitudinal axes to facilitate their attachment and removal.
- the apparatus may further include pulling means for pulling the towing head through the outer pipe.
- the pulling means may be a winch with a cable which can be connected to the towing head.
- the outer pipe may be a steel pipe and the inner pipe may be a polymeric pipe.
- the outer pipe may be curved and may be a pipe bend.
- Figure 1 is a diagrammatic cross-sectional side view of the apparatus according to the invention.
- Figure 2 is a cross-sectional side view of the apparatus showing the inner pipe pulled part way into the outer pipe;
- Figure 3 is a cross-sectional side view of the pressure housing according to the invention.
- Figure 4 is a cross-sectional side view of the towing head according to the invention.
- Figure 5 is a cross-sectional side view of the mandrel
- Figure 6 is a cross-sectional side view of part of the apparatus showing a reinforcing jacket on the outer pipe;
- Figure 7 is a cross-sectional side view of apparatus according to another embodiment of the invention.
- apparatus 10 for lining an outer steel pipe 12 with an inner high density polyethylene pipe 14 includes a pressure housing 16 and a towing head 18.
- the pressure housing 16 as can be seen in more detail in figure 3, has a static trailing seal 20, water inlets 22 and a flange 24.
- the outer steel pipe 12 has two flanges 26 and 28. Flange 26 is attached to flange 24 of the pressure housing 16 to secure the pressure housing 16 to the outer steel pipe 12 to form a seal between the two flanges.
- the towing head 18 has a leading dynamic seal 30 located in a groove 32 in a high density polyethylene body 34 from the rear of which a hollow cylindrical section 36 extends.
- An eye bolt 38 is fixed to the body 34.
- the body 34 and part of the section 36 are tapered.
- a mandrel 40 is inserted into the inner pipe 14.
- the mandrel 40 consists of a steel tube 42 with a flexibly resilient rubber coating 44 on its outer surface.
- a run-out pipe 46 has a flange 48 which is attached to the flange 28 of the outer pipe 12 to secure the run-out pipe 46 to the outer pipe 12 and also to provide a seal between the two flanges.
- a winch 50 is connected to the eyebolt 38 of the towing head 18 by a cable 52 which passes through the run-out pipe 46 and the outer pipe 12.
- the towing head 18 is fusion welded to the inner pipe 14 and then winched into the outer pipe 12 by the winch 50.
- a pressure chamber 60 is initially formed between the inner pipe 14 and the pressure housing 16, and that as the inner pipe 14 is pulled into the outer pipe 12, the pressure chamber increases in length and is thus also formed between the inner pipe 14 and the outer pipe 12.
- the pressure chamber 60 is sealed at its opposite ends by the static trailing seal 20 and the leading seal 30.
- the pressure housing 16 has a section 62 which has the same internal diameter as the outer pipe 12. This internal diameter may be less than that of the outer pipe 12 to introduce a degree of axial stress into the inner pipe 14 should this be required.
- the pressure of the water reduces the diameter of the inner pipe 14 and forces it onto the mandrel 40.
- the mandrel 40 prevents the inner pipe 14 from collapsing under the influence of the pressure of the water in the pressure chamber 60.
- the towing head 18 is pulled into the run-out pipe 46 by the winch 50.
- the pressure chamber 60 has reached its maximum length.
- the pressure in the pressure chamber 60 is then reduced to allow the inner pipe 14 to expand and in so doing to discharge water from the pressure chamber 60 through the water inlets 22.
- the run-out pipe 46 is disconnected from the outer pipe 12 and removed from that part of the inner pipe 14 protruding from the outer pipe 12.
- the towing head 18 is then severed from the inner pipe 14.
- the pressure housing 16 is also disconnected from the outer pipe 12 and removed from that part of the inner pipe 12 protruding from the outer pipe 12.
- the parts of the inner pipe 14 protruding from the opposite ends of the outer pipe 12 can be used to form flanges (not shown) which abut the flanges 26 and 28.
- a reinforcing jacket in the form of a steel pipe 62, see figure 6, can be located over the outer pipe 12 to prevent the outer pipe 12 from undergoing any significant radial expansion caused by the pressure of the water in the pressure chamber 60.
- a relatively thin walled outer pipe 12 can be lined with an inner pipe 14, without the outer pipe 12 being damaged during the lining process.
- a pressure housing 16.1 has a static trailing seal 20.1 , water inlets 22.2, a tapered die section 64 and an oil cavity 66.
- the oil cavity 66 is formed between a radially inwardly extending lip 68 and the static trailing seal 20.1.
- the tapered die section 64 has bolt holes 68 to which a flange 26.1 of an outer steel pipe 12.1 can be fastened by bolts (not shown).
- a free leading dynamic seal 30.1 is provided for sealing the leading end of the pressure chamber 60.1.
- the pressure chamber 60.1 is sealed at opposite ends by the static seal 20.1 and the leading seal 30.1 , and is formed between the inner pipe 14.1 on the one hand and the outer pipe 12.1 and the pressure housing 16.1 on the other hand.
- the leading seal 30.1 has an outer seal 72 which can seal against the outer tube 12.1 , and an inner seal in the form of an O-ring 74 which can seal against the inner tube 14.1.
- the leading seal 30.1 has a circumferentially extending groove 75 which is in use filled with water under pressure.
- oil is introduced into the oil cavity 66 and water is introduced under pressure into the pressure chamber 60.1.
- the water urges the static seal 20.1 radially inwardly to seal against the inner pipe 14.1.
- the water also enters the groove 75 and urges the O-ring 74 radially inwardly to seal against the inner pipe 14.1 , and the seal 72 radially outwardly to seal against the outer pipe 12.1.
- a spacer (not shown) may be interposed between the leading seal 30.1 and a sleeve 78 of the towing head 18.1 to prevent the leading seal 30.1 from moving forwardly along the inner pipe 14.1.
- the bore of the leading seal 30.1 may have a plurality of spaced circumferentially extending grooves for engaging the inner pipe 14.1 to prevent the leading seal 30.1 from moving along the inner pipe 14.1.
- the inner pipe 14.1 is pulled into the outer pipe 12.1 and the length of the pressure chamber 60.1 increases as the dynamic seal 30.1 moves away from the static seal 20.1.
- a mixture of water and an anti-corrosion agent such as glycol may be used in the pressure chamber.
- outer pipe need not be straight and that the method described could be used to line a pipe bend with an inner pipe.
- the tapered die section 64 can be used for full or partial reduction of the diameter of the inner pipe 14.1 to introduce axial stresses into the inner pipe 14.1 should this be required.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2002232052A AU2002232052A1 (en) | 2001-02-15 | 2002-02-14 | Method and apparatus for lining an outer pipe with an inner pipe |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA200101285 | 2001-02-15 | ||
ZA2001/1285 | 2001-02-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002064351A2 true WO2002064351A2 (en) | 2002-08-22 |
WO2002064351A3 WO2002064351A3 (en) | 2002-12-05 |
Family
ID=25589070
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2002/000445 WO2002064351A2 (en) | 2001-02-15 | 2002-02-14 | Method and apparatus for lining an outer pipe with an inner pipe |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU2002232052A1 (en) |
WO (1) | WO2002064351A2 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005047757A1 (en) * | 2003-11-07 | 2005-05-26 | Insituform (Netherlands) B.V. | Installation of cured in place liner with inner impermeable layer and apparatus |
US7238251B1 (en) | 2003-11-07 | 2007-07-03 | Insituform (Netherlands) B.V. | Method of preparing cured in place liner using resin impregnation tower |
US7261788B1 (en) | 2003-11-07 | 2007-08-28 | Insitaform (Netherlands) B.V. | Preparation of cured in place liner with integral inner impermeable layer |
US7766048B2 (en) | 2004-11-03 | 2010-08-03 | Ina Acquisition Corp. | Installation of cured in place liners with air and flow-through steam to cure |
US7857932B1 (en) | 2003-11-07 | 2010-12-28 | Ina Acquisition Corp. | Cured in place liner with everted outer impermeable layer and method of manufacture |
ES2360780A1 (en) * | 2009-11-20 | 2011-06-09 | Manuel Barreto Avero | Manufacturing procedure of a metal tube interiorly coated by a tube of polymeric material and tube so manufactured. (Machine-translation by Google Translate, not legally binding) |
GB2482220A (en) * | 2010-07-20 | 2012-01-25 | Glynwed Pipe Systems Ltd | Sealing of Coiled Pipe |
WO2013144010A1 (en) * | 2012-03-29 | 2013-10-03 | Wavin B.V. | Device and method for installing a compact pipe within a pipeline |
CN110561772A (en) * | 2019-08-13 | 2019-12-13 | 长沙理工大学 | production equipment for metal-coated thermosetting plastic profiles |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4120614A (en) * | 1976-07-30 | 1978-10-17 | Etablissements Poutrait-Morin S.A. | Hand bicycle pump with pressure preselection and display means |
EP0233006B1 (en) * | 1986-02-10 | 1991-01-23 | British Gas plc | Method for lining a pipe or main |
FR2665234A1 (en) * | 1990-07-27 | 1992-01-31 | Carbon Ste Fse Amortisseurs | Separator piston for hydraulic cylinders |
DE19502781A1 (en) * | 1994-02-05 | 1995-08-10 | Schluemer Heinz Dieter | Air sprung bicycle saddle support for adjustment of suspension |
WO1998050725A1 (en) * | 1997-05-03 | 1998-11-12 | Advanced Engineering Solutions Limited | Method of lining pipes |
-
2002
- 2002-02-14 WO PCT/IB2002/000445 patent/WO2002064351A2/en not_active Application Discontinuation
- 2002-02-14 AU AU2002232052A patent/AU2002232052A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4120614A (en) * | 1976-07-30 | 1978-10-17 | Etablissements Poutrait-Morin S.A. | Hand bicycle pump with pressure preselection and display means |
EP0233006B1 (en) * | 1986-02-10 | 1991-01-23 | British Gas plc | Method for lining a pipe or main |
FR2665234A1 (en) * | 1990-07-27 | 1992-01-31 | Carbon Ste Fse Amortisseurs | Separator piston for hydraulic cylinders |
DE19502781A1 (en) * | 1994-02-05 | 1995-08-10 | Schluemer Heinz Dieter | Air sprung bicycle saddle support for adjustment of suspension |
WO1998050725A1 (en) * | 1997-05-03 | 1998-11-12 | Advanced Engineering Solutions Limited | Method of lining pipes |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005047757A1 (en) * | 2003-11-07 | 2005-05-26 | Insituform (Netherlands) B.V. | Installation of cured in place liner with inner impermeable layer and apparatus |
US7112254B1 (en) | 2003-11-07 | 2006-09-26 | Insituform (Netherlands) B.V. | Installation of cured in place liner with inner impermeable layer and apparatus |
JP2007512480A (en) * | 2003-11-07 | 2007-05-17 | アイエヌエイ アクイジション コーポレーション | In-situ curable liner installation and equipment with inner impermeable layer |
US7238251B1 (en) | 2003-11-07 | 2007-07-03 | Insituform (Netherlands) B.V. | Method of preparing cured in place liner using resin impregnation tower |
US7261788B1 (en) | 2003-11-07 | 2007-08-28 | Insitaform (Netherlands) B.V. | Preparation of cured in place liner with integral inner impermeable layer |
US7857932B1 (en) | 2003-11-07 | 2010-12-28 | Ina Acquisition Corp. | Cured in place liner with everted outer impermeable layer and method of manufacture |
JP4833075B2 (en) * | 2003-11-07 | 2011-12-07 | アイエヌエイ アクイジション コーポレーション | Installation method for in-situ curable liner with inner impermeable layer |
NO342248B1 (en) * | 2003-11-07 | 2018-04-30 | Ina Acquisition Corp | Procedure for installing a hardened on-site resin impregnated cladding. |
US7766048B2 (en) | 2004-11-03 | 2010-08-03 | Ina Acquisition Corp. | Installation of cured in place liners with air and flow-through steam to cure |
ES2360780A1 (en) * | 2009-11-20 | 2011-06-09 | Manuel Barreto Avero | Manufacturing procedure of a metal tube interiorly coated by a tube of polymeric material and tube so manufactured. (Machine-translation by Google Translate, not legally binding) |
GB2482132A (en) * | 2010-07-20 | 2012-01-25 | Glynwed Pipe Systems Ltd | Sealing of coiled pipe with plastic towing head |
GB2482220B (en) * | 2010-07-20 | 2014-10-08 | Glynwed Pipe Systems Ltd | Sealing of coiled pipe |
GB2482220A (en) * | 2010-07-20 | 2012-01-25 | Glynwed Pipe Systems Ltd | Sealing of Coiled Pipe |
WO2013144010A1 (en) * | 2012-03-29 | 2013-10-03 | Wavin B.V. | Device and method for installing a compact pipe within a pipeline |
CN104272006A (en) * | 2012-03-29 | 2015-01-07 | 韦文有限公司 | Device and method for installing a compact pipe within a pipeline |
JP2015517063A (en) * | 2012-03-29 | 2015-06-18 | ウェイヴィン ビー.ヴィ. | Apparatus and method for installing small pipes in pipelines |
CN104272006B (en) * | 2012-03-29 | 2016-11-16 | 韦文有限公司 | For installing the equipment to pipeline and method by compressing pipe |
AU2013242010B2 (en) * | 2012-03-29 | 2017-04-20 | Wavin B.V. | Device and method for installing a compact pipe within a pipeline |
US9695971B2 (en) | 2012-03-29 | 2017-07-04 | Wavin B.V. | Device and method for installing a compact pipe within a pipeline |
CN110561772A (en) * | 2019-08-13 | 2019-12-13 | 长沙理工大学 | production equipment for metal-coated thermosetting plastic profiles |
Also Published As
Publication number | Publication date |
---|---|
WO2002064351A3 (en) | 2002-12-05 |
AU2002232052A1 (en) | 2002-08-28 |
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