WO2012016244A2 - Apparatus and method for heat curing of pipe liners - Google Patents
Apparatus and method for heat curing of pipe liners Download PDFInfo
- Publication number
- WO2012016244A2 WO2012016244A2 PCT/US2011/046159 US2011046159W WO2012016244A2 WO 2012016244 A2 WO2012016244 A2 WO 2012016244A2 US 2011046159 W US2011046159 W US 2011046159W WO 2012016244 A2 WO2012016244 A2 WO 2012016244A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tubular liner
- curing
- flexible tube
- port
- pipe
- 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
- F16L55/1651—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 everted
-
- 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
- This invention relates, generally, to pipe liners that are used to repair buried pipes without excavation. More particularly, it relates to an apparatus and method that reduces the amount of time required to complete such repairs.
- Methods of rehabilitating damaged pipes by inverting an tubular liner impregnated with curable resin are known.
- the known methods of installing a liner to repair a buried pipe, while it remains underground, involve inserting a liner into the pipe and forcing the liner into engagement with the inner walls of the pipe by inflating a bladder.
- the liner is impregnated with curable resins prior to insertion and the bladder must remain inflated until the resin cures.
- the time required for resin to cure ranges from three to eight hours, depending upon ambient temperatures. Thus there is a need for an apparatus and method that provides a shorter curing time regardless of ambient temperatures.
- the apparatus includes a curing cap having an inflation port, a curing port and a drainage port.
- a remote source of pressurized fluid (preferably air) is placed in fluid communication with the inflation port.
- the apparatus also includes a manifold having an outlet, a first inlet in valved fluid communication with a heated fluid source, a second inlet in valved fluid communication with a pressurized fluid source and a third inlet in valved fluid communication with the drainage port.
- a flexible curing tube is slidably received by the curing port while maintaining a substantially fluid-tight seal.
- the flexible tube has a first end in fluid communication with (via the manifold) a source of heated fluid (such as water or steam) and the second end has a substantially spherical guide thereon.
- the second end of the flexible tube also includes a plurality of perforations to allow fluids to pass there through. During curing operations, the heated fluid flows through the flexible tube and exits, through said perforations, into the interior of an inverted line
- Fig. 1 is a perspective view of an illustrative curing cap
- Fig. 2 is a side plan view of an illustrative curing cap
- Fig. 3A is a side plan view of an inversion head, with an un-inverted tubular liner positioned thereon;
- Fig. 3B is a side plan view of an illustrative curing cap installed in an inversion head, which is in turn installed in the open end of an liner tube;
- Fig. 4A is a side plan view of an illustrative curing cap installed in an inversion head with the flexible tube extending there through;
- Fig. 4B is a side plan view of an illustrative curing cap installed in an inversion head with the flexible tube extending there through and into the lumen of the tubular liner;
- Fig. 5 is a diagrammatic view of an illustrative manifold.
- Figs. 1 and 2 depict an illustrative embodiment of the novel curing cap which is denoted as a whole by the reference numeral 10.
- Curing cap 10 includes substantially circular body 12 having an outer side 12a and inner side 12b. Outer side 12a further includes inflation port 14, curing port 16 and discharge port 18. All ports are preferably arranged to provide unidirectional fluid communication between outer side 12a and inner side 12b of circular body 12. Inner side 12b of circular body 12 is received by intake 22 of inversion head 20 (Fig. 3A). Discharge end 24 releasably engages the interior of open end 26a of liner tube 26.
- the first type of liner comprises a felt or fiberglass lining, having a closed end and an open end impregnated with a curable resin.
- the second type includes a lining composition of two (2) main layers; a first layer comprising an inflatable bladder having a closed end and an open end, and a second layer of felt or fiberglass lining that is impregnated with a curable resin.
- Liner tube 26 preferably comprises a felt layer (26b) and a plastic layer (26c) as is known in the art.
- the felt layer is adapted to absorb a liquid resin
- the plastic layer is adapted to provide an impervious smooth continuous surface.
- the plastic layer Prior to inverting the liner tube, the plastic layer is located on the outside of the liner tube and the felt layer is located on the inside.
- the liner tube 26 is inverted so that the felt layer is on the outside of the liner tube and the smooth plastic layer is on the inside of the liner tube.
- an impermeable coating on the liner tube allows the liner tube to be inflated and inverted without the use of a separate bladder. In embodiments using an inflatable bladder, the bladder overlies the felt lining and is contact with plastic layer 26c.
- intake 22 of inversion head 20 is connected (via a tubular conduit) to a liner dispensing unit (which normally include a source of pressurized air).
- the dispensing unit holds the length of resin soaked liner prior to delivery.
- the air under pressure flows through the system from the dispensing unit toward inversion head 20.
- open end 26a of liner tube 26 is fitted over discharge end 24 of inversion head 20 and is secured in place to create an airtight connection there around ensuring the air under pressure causes the closed leading end of liner tube 26 (not shown) to follow a path of travel through curing cap 20 into the interior or lumen of the pipe, thereby inverting said liner as said closed end is propelled to the distal end of the pipe by said heated fluid under pressure (see FIG. 3B).
- liner tube 26 is fully inverted along its entire extent when the closed end of liner tube 26 reaches the distal end of the pipe.
- the rubber layer or uncoated lining layer now forms the interior surface of liner tube 26 and the resin-impregnated outer layer now forms the exterior layer and is pressed against the inner sidewalls of the pipe by the pressure of said gaseous or liquid fluid.
- Air from the inversion compressor further causes liner 26 (or bladder/liner combination) to expand radially so that the resin coated surface of liner 26 comes into contact with the interior of the pipe to be repaired. Air pressure is continued, either directly against the interior of the liner (or inflatable bladder) to force the resin-coated surface of liner 26 into contact with the interior of the pipe.
- inversion head 20 is uncoupled from the dispensing unit and compressed air source.
- curing cap 10 is then coupled with intake 22 of curing cap 20 (FIG. 3B).
- Inflation port 14 is connected to an air compressor, not shown, via airline 14a. Air from the compressor maintains the pressure within liner 26 to keep the resin- coated surface (26b) of liner 26 in contact with the interior of the pipe.
- Curing port 16 is connected, via flexible curing tube 16a, to manifold 30 (see Fig. 5), which is in turn in fluid communication with a heated fluid source and an air compressor, not depicted. In an alternative embodiment, however, it is possible to use a single air compressor connected to the manifold to provide connections to both inflation port 14 and curing port 16. Curing port 16 is preferably of a slip-ring configuration, but can be adapted for any configuration that allows curing curing tube 16a to slide through curing port 16 while maintaining a substantially fluid- tight seal. Drainage port 18 is also connected to manifold 30 and provides fluid communication, via drainage line 18a, from the interior of the pipe outward to manifold 30.
- Manifold 30, Fig. 5 includes heat inlet 32, air inlet 34 and outlet 36.
- Heat inlet 32 is in fluid communication with a heating source which provides heated fluid (i.e. hot water or steam) to the system.
- heated fluid i.e. hot water or steam
- the flow of heated fluid into the system is controlled by heat valve 32a, and the temperature and/or pressure of the heated fluid is monitored by gauge 32b.
- Air inlet 34 is in fluid communication with a drainage air compressor which provides air, under pressure, to the system.
- the flow of air under pressure into the system is controlled by air valve 34a, and the temperature and/or pressure of the air is monitored by gauge 34b.
- the drainage air compressor can be replaced by the inversion air compressor using linkages as know in the art.
- Both heat fluid inlet 32 and air inlet 34 are in open fluid communication with outlet valve 36.
- outlet valve 36 For example, when heat valve 32a is open then heated fluid is permitted to pass through manifold 30 thereby exiting outlet 36 and entering the system via curing tube 16a.
- Manifold 30 also includes drainage inlet 38, connected to drainage line 18, which further comprises drainage valve 38a and temperature/pressure gauge 38b. Fluids leaving the system via drainage line 18a can be monitored via gauge 38b and disposed of when safe through drainage outlet 38c.
- Another aspect of the inventive method occurs after liner tube 26 has been inverted and is being held against the sides of the pipe under pressure.
- This aspect includes the steps of inserting curing curing tube 16a into the lumen of liner tube 26, opening heat valve 32 so that heated fluid flows through manifold 30, via outlet 36, into curing curing tube 16a and into the lumen of liner tube 26.
- Curing tube 16a is an elongate flexible tube including substantially spherical guide 17 at its distal end. Curing tube 16a also includes a series of perforations (19) proximal to spherical guide 17. Once liner tube 26 is fully extended, curing tube 16a is fed through curing port 16 thereby advancing guide 17 through the lumen of liner tube 26. The substantially spherical shape of guide 17 allows the distal end of the tube to easily navigate corners and bends. Once properly positioned, the heated fluid passes through curing tube 16a and out perforations 19 into the lumen of liner tube 26 near its distal end. This ensures liner tube 26 is heated from the distal (closed) end toward the proximal (open) end.
- the air under pressure used to invert the liner tube is permitted to escape through drainage port 18 and back to manifold 30 via drainage line 18a.
- Gauge 38a is monitored as the fluids (air under pressure, steam or hot water) pass there through. When the gauge shows the temperature of the drainage fluids are substantially equal to the temperature of the heated fluid entering the system, this indicates that the heated fluid has reached the proximal end of liner tube 26. It can now be assumed liner tube 16 is now substantially filled said heated fluid. Heat valve 32a and drainage valve 38a can then be closed, fully or partially, so that liner tube 26 is not over-pressurized. The resin cures within a significantly abbreviated time because the heat of the heated fluid is conducted by the inflatable bladder (or plastic liner layer (26c) into the resin-impregnated layer (26b) where it acts as a catalyst.
- drainage valve 36a When the resin has sufficiently cured, drainage valve 36a is opened to allow the lumen of the liner tube to be emptied. To facilitate drainage, air valve 34a is opened forcing air under pressure through perforations 19 in the distal end of curing tube 16a. This air under pressure forces any remaining heated fluid through drainage port 18, through line 18a and into drainage inlet 38a. Inversion head 20 and curing cap 10 can be removed once all heated fluids are removed from the lumen of liner tube 26. All documents cited herein are incorporated herein by reference. The invention is illustrated by the preceding embodiments. These embodiments are provided to aid in the understanding of the invention and are not to be construed as a limitation with regard to the arrangement of the parts shown in the figures or the order of steps provided.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112013002261A BR112013002261A2 (en) | 2010-07-30 | 2011-08-01 | Method and apparatus for heat remediation in pipe lining |
AU2011283645A AU2011283645B2 (en) | 2010-07-30 | 2011-08-01 | Apparatus and method for heat curing of pipe liners |
CA2807112A CA2807112C (en) | 2010-07-30 | 2011-08-01 | Apparatus and method for heat curing of pipe liners |
EP11813307.3A EP2598787A4 (en) | 2010-07-30 | 2011-08-01 | Apparatus and method for heat curing of pipe liners |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US36943910P | 2010-07-30 | 2010-07-30 | |
US61/369,439 | 2010-07-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2012016244A2 true WO2012016244A2 (en) | 2012-02-02 |
WO2012016244A3 WO2012016244A3 (en) | 2012-05-31 |
Family
ID=45530769
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2011/046159 WO2012016244A2 (en) | 2010-07-30 | 2011-08-01 | Apparatus and method for heat curing of pipe liners |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP2598787A4 (en) |
AU (1) | AU2011283645B2 (en) |
BR (1) | BR112013002261A2 (en) |
CA (2) | CA2807112C (en) |
CO (1) | CO6680661A2 (en) |
WO (1) | WO2012016244A2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013126925A1 (en) * | 2012-02-26 | 2013-08-29 | Perma-Liner Industries, Llc | Apparatus and method for repairing pipes |
EP3351843A1 (en) * | 2017-01-18 | 2018-07-25 | Antje Krausser | Method and device for renovating pipes |
CN110126311A (en) * | 2019-04-15 | 2019-08-16 | 桐昆集团浙江恒通化纤有限公司 | A kind of method of online processing spinning oil pump petroleum pipeline oil leak reparation |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022090333A1 (en) * | 2020-10-28 | 2022-05-05 | Per Aarsleff A/S | An apparatus for curing a liner |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050098909A1 (en) * | 2003-11-10 | 2005-05-12 | Blue Sky Forever, Inc. | Tube inverting device and method for using same |
KR20070047211A (en) * | 2005-11-01 | 2007-05-04 | 가부시키가이샤 쇼난 고세이쥬시 세이사쿠쇼 | Method of reversing and inserting pipe lining material into pipe passage, and press device for pipe lining material |
US7360559B2 (en) * | 2001-08-10 | 2008-04-22 | Insituform (Netherlands) B.V. | Steam cure of cured in place liner |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2501048B2 (en) * | 1991-05-14 | 1996-05-29 | 康弘 横島 | Pipeline repair method |
JPH08425B2 (en) * | 1993-04-13 | 1996-01-10 | 株式会社湘南合成樹脂製作所 | Pipe repair method |
JPH0673906B2 (en) * | 1992-10-09 | 1994-09-21 | 株式会社湘南合成樹脂製作所 | Pipe repair method |
JP2001322170A (en) * | 2000-05-18 | 2001-11-20 | Shonan Gosei Jushi Seisakusho:Kk | Pipe lining material reversal nozzle and pipe lining method |
CA2529389C (en) * | 2003-06-13 | 2012-09-25 | Underground Solutions Technologies Group, Inc. | System and arrangement for conduit reparation |
JP4778775B2 (en) * | 2005-11-01 | 2011-09-21 | 株式会社湘南合成樹脂製作所 | Lining material reversing device |
-
2011
- 2011-08-01 EP EP11813307.3A patent/EP2598787A4/en not_active Withdrawn
- 2011-08-01 CA CA2807112A patent/CA2807112C/en active Active
- 2011-08-01 AU AU2011283645A patent/AU2011283645B2/en not_active Ceased
- 2011-08-01 BR BR112013002261A patent/BR112013002261A2/en not_active IP Right Cessation
- 2011-08-01 CA CA2863479A patent/CA2863479C/en active Active
- 2011-08-01 WO PCT/US2011/046159 patent/WO2012016244A2/en active Application Filing
-
2013
- 2013-02-25 CO CO13037811A patent/CO6680661A2/en active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7360559B2 (en) * | 2001-08-10 | 2008-04-22 | Insituform (Netherlands) B.V. | Steam cure of cured in place liner |
US20050098909A1 (en) * | 2003-11-10 | 2005-05-12 | Blue Sky Forever, Inc. | Tube inverting device and method for using same |
KR20070047211A (en) * | 2005-11-01 | 2007-05-04 | 가부시키가이샤 쇼난 고세이쥬시 세이사쿠쇼 | Method of reversing and inserting pipe lining material into pipe passage, and press device for pipe lining material |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013126925A1 (en) * | 2012-02-26 | 2013-08-29 | Perma-Liner Industries, Llc | Apparatus and method for repairing pipes |
CN104272005A (en) * | 2012-02-26 | 2015-01-07 | 帕尔玛-莱利尔工业公司 | Apparatus and method for repairing pipes |
JP2015509451A (en) * | 2012-02-26 | 2015-03-30 | パーマ−ライナー インダストリーズ,エルエルシー | Apparatus and method for repairing pipes |
US9074720B2 (en) | 2012-02-26 | 2015-07-07 | Perma-Liner Industries, Llc | Apparatus and method for repairing pipes |
AU2013222067B2 (en) * | 2012-02-26 | 2016-02-18 | Perma-Liner Industries, Llc | Apparatus and method for repairing pipes |
EP3351843A1 (en) * | 2017-01-18 | 2018-07-25 | Antje Krausser | Method and device for renovating pipes |
CN110126311A (en) * | 2019-04-15 | 2019-08-16 | 桐昆集团浙江恒通化纤有限公司 | A kind of method of online processing spinning oil pump petroleum pipeline oil leak reparation |
CN110126311B (en) * | 2019-04-15 | 2021-07-27 | 江苏桐昆恒阳化纤有限公司 | Method for repairing leaked oil of oil delivery pipe of spinning oil pump through online treatment |
Also Published As
Publication number | Publication date |
---|---|
AU2011283645A1 (en) | 2013-02-28 |
EP2598787A2 (en) | 2013-06-05 |
CA2807112C (en) | 2015-02-10 |
CA2863479A1 (en) | 2012-02-02 |
WO2012016244A3 (en) | 2012-05-31 |
CO6680661A2 (en) | 2013-05-31 |
AU2011283645B2 (en) | 2015-06-11 |
BR112013002261A2 (en) | 2016-05-24 |
EP2598787A4 (en) | 2017-11-01 |
CA2807112A1 (en) | 2012-02-02 |
CA2863479C (en) | 2016-07-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9074720B2 (en) | Apparatus and method for repairing pipes | |
US9851040B2 (en) | Apparatus and method to repair the junction of a sewer main line and lateral pipe | |
US6024910A (en) | Method for lining a tubular conduit | |
US8118063B2 (en) | Method and apparatus for lining a pipe | |
US8550121B2 (en) | Method and apparatus for lining a pipe | |
SG157364A1 (en) | Installation of cured in place liners with air and flow-through steam to cure | |
US9523457B2 (en) | Apparatus and method for heat curing of pipe liners | |
CA2807112C (en) | Apparatus and method for heat curing of pipe liners | |
US20180306371A1 (en) | Method and Apparatus for Lining a Pipe | |
US9074719B2 (en) | Apparatus and method for heat curing of pipe liners | |
KR101935403B1 (en) | Elastic tube type pipeline repairing device and pipeline repairing method using it | |
AU2014203356B2 (en) | Pipe and Conduit Rehabilitation System |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11813307 Country of ref document: EP Kind code of ref document: A2 |
|
ENP | Entry into the national phase in: |
Ref document number: 2807112 Country of ref document: CA |
|
NENP | Non-entry into the national phase in: |
Ref country code: DE |
|
ENP | Entry into the national phase in: |
Ref document number: 2011283645 Country of ref document: AU Date of ref document: 20110801 Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2011813307 Country of ref document: EP |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112013002261 Country of ref document: BR |
|
ENP | Entry into the national phase in: |
Ref document number: 112013002261 Country of ref document: BR Kind code of ref document: A2 Effective date: 20130130 |