GB2147966A - Lining pipe connections - Google Patents
Lining pipe connections Download PDFInfo
- Publication number
- GB2147966A GB2147966A GB08424494A GB8424494A GB2147966A GB 2147966 A GB2147966 A GB 2147966A GB 08424494 A GB08424494 A GB 08424494A GB 8424494 A GB8424494 A GB 8424494A GB 2147966 A GB2147966 A GB 2147966A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carrier
- sleeve
- lining
- branch pipe
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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
- F16L55/179—Devices for covering leaks in pipes or hoses, e.g. hose-menders specially adapted for bends, branch units, branching pipes or the like
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
- B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
- B29C65/26—Hot fluid
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/61—Joining from or joining on the inside
- B29C66/612—Making circumferential joints
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/81455—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps being a fluid inflatable bag or bladder, a diaphragm or a vacuum bag for applying isostatic pressure
-
- 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
- F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
- F16L55/265—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means specially adapted for work at or near a junction between a main and a lateral pipe
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Pipe Accessories (AREA)
Abstract
In a method of lining the junction between a lined sewer main (3, 4) and a lateral branch pipe (5) a sleeve (2) of hardenable plastics material is inserted into an aperture in the lining (3) under remote control by an inflatable carrier (1) supported on a traveling carriage in the interior of the main (3, 4). When the carrier (1) and sleeve (2) are in position, the carrier (1) is inflated to expand the sleeve (2) and force it against the edge of the lining (3) and the end portion of the branch pipe (5) where it seals off the annular space 8 between the lining (3) and the original wall (4) of the main. The sleeve (2) may be of a fibrous material saturated with a resin, and the carrier (1) may be heated to assist in curing the resin. Once the sleeve (2) has set, the carrier (1) is deflated and withdrawn. <IMAGE>
Description
SPECIFICATION
Method and apparatus for lining a pipe connection
This invention relates to a method and apparatus providing a connection between, for example, a branch pipe and a lined main pipe or duct, particularly a sewer pipe.
It is known to line a damaged sewer pipe or duct with an internal plastics 'slip' lining comprising a plurality of interconnecting polyethylene pipe sections. The external diameter of the lining is less than the internal diameter of the damaged pipe, leaving an annularsection space between the lining and the original pipe or duct which in most cases is subsequently filled with grout. Where a branch pipe or 'lateral' meets the lined pipe, an aperture must be cut in the lining in registry with the lateral to allow fluids to pass into the interior of the lined pipe. This necessitates plugging the above mentioned annularsection space around the lateral connection while grouting is carried out, as is described for example in my co-pending Application
No.83 00735.
In some cases the annular-section space may be very small or non-existent, as when the lining is of the type which is formed insitu, and grouting is not required. In any event, however, it is desirable to cover the annular space or join between the lining and the original pipe or duct to prevent the escape of fluid outwardly from the lining into the annular-section space or join or to reduce the possibility of blockages at the pipe junction.
According to one aspect of this invention, there is provided a method of lining the junction between a branch pipe and a lined main pipe or duct, the main pipe or duct having an internal lining with an aperture therein in registry with the branch pipe, wherein the method comprises fitting a sleeve of hardenable plastics material on a remotely expandable carrier, transporting the carrier and the sleeve on a remotely controlled carriage through the interior of the lined pipe or duct to the location of the junction with the branch pipe, remotely operating drive means on the carriage to insert the carrier and the sleeve into the aperature, remotely causing the carrier to expand thereby to bring the sleeve into contact with the lining and the branch pipe end portion, leaving the carrier in its expanded position whilst the sleeve hardens, and then contracting the carrier and withdrawing it from the aperture, leaving the hardened sleeve behind.
According to another aspect of the invention, apparatus for lining the junction between a branch pipe and an internally lined main pipe or duct comprises a remotely controllable carriage, and a remotely expandable carrier mounted on the carriage for carrying a lining sleeve, and remotely operable drive means for
moving the carrier laterally relative to a longitudinal axis of the carriage.
The carrier is preferably a detachable hollow
rubber plug or ring which can be inflated and deflated by remote control. Initially, when the sleeve is fitted to the carrier, both sleeve and carrier are of a diameter less than the internal diameter of the branch pipe and the aperture cut in the lining. The carrier is then mounted on the carriage which is caused to travel through the main pipe or duct until it reaches the branch pipe connection, whereupon the carrier and attached sleeve are inserted into the cut aperture and branch pipe with one edge of the sleeve inside the branch pipe and the other approximately flush with or overlapping the edge of the aperture nearest the main pipe or duct axis. The position of the sleeve is preferably monitored using closedcircuit TV apparatus.When the sleeve is in the required position, the carrier is inflated by remote control to expand the sleeve against the branch pipe and the aperture edge or edges. The sleeve is hardened whilst the carrier is inflated, and if necessary heated gas or liquid can be circulated through the carrier via pipe means to accelerate the hardening. The carrier is then deflated and removed, leaving the sleeve in position.
Thus the annular-section space or join between the lining and the original main pipe or duct is sealed off by the sleeve, so that if necessary grout can be injected into the space either while the inflatable carrier is still in place or when it has been withdrawn.
The stage at which heated gas or liquid is introduced into the inflatable carrier depends on the properties of the material used for the sleeve. The sleeve material may be a plastics compound which expands on the application of heat without significant pressure against its inner wall. In this case the carrier is merely inflated at relatively low pressure to ensure that the sleeve does not buckle and engages the aperture and branch pipe around the complete circumference. The action of the heat may also serve to harden the sleeve once it has been expanded, or alternatively, the material may be such as to harden when cooled or allowed to cool.
In the above example, the sleeve is initially held on the carrier by partly inflating the carrier. With an alternative material, e.g. a fibrous material saturated with resin, the sleeve may be attahced to the carrier by a weak adhesive which is broken by heat or when the carrier is inflated or removed. A resin based sleeve may be initially mounted on the carrier with a tuck in it to give the initial diameter required to insert in the branch pipe opening. When the sleeve has been correctly positioned, inflation of the carrier breaks the adhesive, and pulls out the tuck as the sleeve is expanded. In this case, heated fluid (where necessary) is introduced only when the sleeve has been expanded, so as to cure the resin.
The method of the invention enables a smoother and more durable interior surface connection between the branch pipe and main pipe lining to be produced. reducing the likelihood of a build-up of waste at the connection.
Although the invention is intended primarily for use with slip lined sewers requiring grouting, it can be used to line a connection between a branch pipe and a main pipe in which an internal lining has been formed insitu in contact with the interior surface of the original pipe.
The drawing illustrates, by way of example only, an inflatable toroidal carrier 1 and sleeve 2 positioned at a lateral connection. It should be noted that only the top walls of the pipe lining 3 and original main pipe 4 are shown.
In this embodiment, the carrier 1, being toroidal in shape, has a central opening to avoid pressure build-up in the lateral 5 while the sleeve 2 is being fitted. Element 6 is a support member attached to a clamping ring arrangement 7, the support member being attached to a remotely controlled carriage below (not shown). In the drawing the annular section space between the main pipe 4 and the lining 3 is such that a grout layer 8 is required.
The carrier 1 may be detachable from the carriage so that other operations can be performed using the carriage while the carrier 1 is left in position in the aperture to allow the sleeve to harden.
Claims (20)
1. A method of lining the junction between a branch pipe and a lined main pipe or duct, the main pipe being or duct having an internal lining with an aperture therein in registry with the branch pipe, wherein the method comprises fitting a sleeve of hardenable material on a remotely expandable carrier, transporting the carrier and the sleeve on a remotely controlled carriage through the interior of the lined pipe or duct to the location other branch pipe, remotely operating drive means on the carriage to insert the carrier and the sleeve into the aperture, remotely causing the carrier to expand, thereby bringing the sleeve into contact with the lining and the branch pipe end portion, leaving the carrier in its expanded position whilst the sleeve hardens, and then contracting the carrier and withdrawing it from the aperture, leaving the hardened sleeve in position.
2. A method according to claim 1 in which the carrier is detachable from the carriage, and in which the carriage is disconnected from the carrier when the carrier has been expanded and reconnected when the sleeve has hardened and the carrier is to be withdrawn.
3. A method according to claim 1 or claim 2, wherein the carrier is heated.
4. A method according to claim 3, wherein the carrier is hollow and a heated fluid is circulated through the interior of the carrier.
5. A method according to any preceding claim, wherein the carrier is flexible and hollow, and wherein the carrier is inflated to expand it.
6. A method according to claim 5, wherein the sleeve is mounted on the carrier by partially inflating it.
7. A method according to any preceding claim in which the sleeve is a mixture of a resin and fibrous material.
8. A method according to any of claims 1 to 6, wherein the sleeve is heated during expansion and allowed to cool when it has been expanded to the required size.
9. Appartus for lining the junction between a branch pipe and an internally lined main pipe or duct comprising a remotely controllable carriage, and a remotely expandable carrier mounted on the carriage for carrying a lining sleeve, and remotely operable drive means for moving the carrier laterally relative to a longitudinal axis of the carriage.
10. Apparatus according to claims 9, wherein the carrier is detachable.
11. Apparatus according to claim 9 or claim 10, wherein the carrier comprises an inflatable plug.
12. Apparatus according to claim 9 or claim 10, wherein the carrier comprises a hollow inflatable ring.
13. Apparatus according to any of claims 9 to 12, including a flexible sleeve mounted on the carrier.
14. Apparatus according to claim 13, wherein the sleeve is held in place on the carrier by an adhesive.
15. Apparatus according to claim 13 or claim 14, wherein the sleeve is made of a fibrous material saturated in resin.
16. Apparatus according to any of claims 9 to 15, including means for heating the carrier.
17. Apparatus according to claim 16, wherein the heating means includes a pipe for supplying a heated fluid to the carrier.
18. A method of lining the junction between internally lined sewer main and a branch pipe, in which a ring or tube of hardenable plastics material is expanded on a remotely controllable expandable carrier inside the end portion of the branch pipe to bridge the space or join between the branch pipe and the lining of the main.
19. A method of lining the junction between a branch pipe and a lined main pipe or duct, the method being substantially as herein described with reference to the drawing.
20. Apparatus for lining the junction between a branch pipe and an internally lined main pipe or duct, the apparatus being substantially as herein described and shown in the drawing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB838326009A GB8326009D0 (en) | 1983-09-28 | 1983-09-28 | Lining pipe connection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8424494D0 GB8424494D0 (en) | 1984-11-07 |
| GB2147966A true GB2147966A (en) | 1985-05-22 |
Family
ID=10549437
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB838326009A Pending GB8326009D0 (en) | 1983-09-28 | 1983-09-28 | Lining pipe connection |
| GB08424494A Withdrawn GB2147966A (en) | 1983-09-28 | 1984-09-28 | Lining pipe connections |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB838326009A Pending GB8326009D0 (en) | 1983-09-28 | 1983-09-28 | Lining pipe connection |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB8326009D0 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2188689A (en) * | 1986-04-05 | 1987-10-07 | Owen Gregory Gallagher | Inflatable pipe shutter |
| GB2192441A (en) * | 1986-07-11 | 1988-01-13 | Tracey Stephen | Lining a duct |
| GB2192442A (en) * | 1986-07-11 | 1988-01-13 | Tracey Stephen | Lining a duct |
| EP0253588A1 (en) * | 1986-07-11 | 1988-01-20 | TRACEY, Stephen | A method of lining a fluid conduit, apparatus for use in said method and a carrier for use in a fluid conduit |
| EP0260220A1 (en) * | 1986-08-14 | 1988-03-16 | Karl Weiss G.m.b.H. & Co. | Method of placing pipes into a pipeline |
| EP0391046A1 (en) * | 1989-04-07 | 1990-10-10 | TEERBAU Gesellschaft für Strassenbau mbH | Method of joining a renovated sewer main to a connecting lateral or similar |
| GB2243658A (en) * | 1990-05-01 | 1991-11-06 | British Gas Plc | Method of connecting a polymeric service pipe to a main |
| EP0465892A1 (en) * | 1990-07-11 | 1992-01-15 | HERMANN HEMSCHEIDT MASCHINENFABRIK GMBH & CO. | Method for sealing a side conduit leading into a main pipe and device for carryinf out this method |
| WO1996031727A1 (en) * | 1995-04-05 | 1996-10-10 | Rice, Doreen | Branched sewer re-lining |
| US5624629A (en) * | 1990-04-23 | 1997-04-29 | Insituform (Netherlands) B.V. | Installation of lateral linings with sealing collar from the main pipeline out |
| US6899832B2 (en) | 1990-04-23 | 2005-05-31 | Insituform (Netherlands) B.V. | Installation of flexible lining with flexible collar for lining lateral pipelines |
| WO2020072658A1 (en) * | 2018-10-05 | 2020-04-09 | Lmk Technologies Llc | Method and assembly for sealing off a pipe |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2115103A (en) * | 1982-01-12 | 1983-09-01 | Ian Roland Yarnell | Method and apparatus for grouting between pipes |
-
1983
- 1983-09-28 GB GB838326009A patent/GB8326009D0/en active Pending
-
1984
- 1984-09-28 GB GB08424494A patent/GB2147966A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2115103A (en) * | 1982-01-12 | 1983-09-01 | Ian Roland Yarnell | Method and apparatus for grouting between pipes |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2188689A (en) * | 1986-04-05 | 1987-10-07 | Owen Gregory Gallagher | Inflatable pipe shutter |
| GB2192441A (en) * | 1986-07-11 | 1988-01-13 | Tracey Stephen | Lining a duct |
| GB2192442A (en) * | 1986-07-11 | 1988-01-13 | Tracey Stephen | Lining a duct |
| EP0253588A1 (en) * | 1986-07-11 | 1988-01-20 | TRACEY, Stephen | A method of lining a fluid conduit, apparatus for use in said method and a carrier for use in a fluid conduit |
| EP0260220A1 (en) * | 1986-08-14 | 1988-03-16 | Karl Weiss G.m.b.H. & Co. | Method of placing pipes into a pipeline |
| EP0391046A1 (en) * | 1989-04-07 | 1990-10-10 | TEERBAU Gesellschaft für Strassenbau mbH | Method of joining a renovated sewer main to a connecting lateral or similar |
| US5624629A (en) * | 1990-04-23 | 1997-04-29 | Insituform (Netherlands) B.V. | Installation of lateral linings with sealing collar from the main pipeline out |
| US6899832B2 (en) | 1990-04-23 | 2005-05-31 | Insituform (Netherlands) B.V. | Installation of flexible lining with flexible collar for lining lateral pipelines |
| GB2243658A (en) * | 1990-05-01 | 1991-11-06 | British Gas Plc | Method of connecting a polymeric service pipe to a main |
| GB2243658B (en) * | 1990-05-01 | 1993-04-28 | British Gas Plc | Method of connecting a polymeric service pipe |
| EP0465892A1 (en) * | 1990-07-11 | 1992-01-15 | HERMANN HEMSCHEIDT MASCHINENFABRIK GMBH & CO. | Method for sealing a side conduit leading into a main pipe and device for carryinf out this method |
| WO1996031727A1 (en) * | 1995-04-05 | 1996-10-10 | Rice, Doreen | Branched sewer re-lining |
| US5954903A (en) * | 1995-04-05 | 1999-09-21 | Rice; Nigel Leonard | Branched sewer re-lining |
| WO2020072658A1 (en) * | 2018-10-05 | 2020-04-09 | Lmk Technologies Llc | Method and assembly for sealing off a pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8326009D0 (en) | 1983-11-02 |
| GB8424494D0 (en) | 1984-11-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |