EP1888963A1 - Method for manufacturing a house-connection module, a house-connection module and a method for installing the house-connection module in a pipe system - Google Patents

Method for manufacturing a house-connection module, a house-connection module and a method for installing the house-connection module in a pipe system

Info

Publication number
EP1888963A1
EP1888963A1 EP06764491A EP06764491A EP1888963A1 EP 1888963 A1 EP1888963 A1 EP 1888963A1 EP 06764491 A EP06764491 A EP 06764491A EP 06764491 A EP06764491 A EP 06764491A EP 1888963 A1 EP1888963 A1 EP 1888963A1
Authority
EP
European Patent Office
Prior art keywords
house
connection module
module
tube
connection
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Withdrawn
Application number
EP06764491A
Other languages
German (de)
French (fr)
Other versions
EP1888963A4 (en
Inventor
Raimo Krooks
Karl-Erik Wasberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Uponor Infra Oy
Original Assignee
KWH Pipe Oy AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by KWH Pipe Oy AB filed Critical KWH Pipe Oy AB
Publication of EP1888963A1 publication Critical patent/EP1888963A1/en
Publication of EP1888963A4 publication Critical patent/EP1888963A4/en
Withdrawn legal-status Critical Current

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
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F3/00—Sewer pipe-line systems
    • E03F3/06—Methods of, or installations for, laying sewer pipes
    • 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

Definitions

  • the invention is directed to a method of injecting polyurethane or another curable material into special modules for pipelines that are to be installed at house- connections and a module.
  • a special module is installed at a house-connection in a pipeline.
  • the space between the module and the pipeline to be reconstructed is sealed by injection of polyurethane in expansion collars in the line on both sides of the connection.
  • the injection is carried out with a device that is pushed into the pipe, the nozzle of which is directed into an injection valve arranged on the inner surface of the module.
  • the task can be carried out without any digging, through the sewer inspection shaft.
  • Drawbacks of present methods are installation difficulties and a phase in the installation phase where an injection nozzle is directed to the valve of the module.
  • Other disadvantages in the present methods are the slowness of installation work that leads apart from high installation costs to the need for the customer to adapt to the need of space needed by the installation equipment, pipes and installation team, sometimes in very highly habituated and trafficked areas.
  • the present invention is directed to a new method for manufacturing and installation of VipLiner house-connections and a house-connection.
  • the module is made by cutting an extruded tube at a fixed length and drilling a hole at the centre for a house connection.
  • the cut tube is turned according to the demands of the male and female connection ends and a sealing tape is arranged in the male end in its own groove, additionally grooves are turned at both sides of the drilled hole in the center of the tube for a back valve and rubber bands are fitted in the grooves and the edges of the back valve are marked on the inner surface of the tube.
  • a sealing collar is mounted on the outside of the back valve. Additionally a cover profile is made, which is directed to the hole drilled for the house connection.
  • the module can also be made by injection moulding, in which case there is no need for turning.
  • a method for installing a house connection module in a pipeline comprising cleaning of the old pipeline and filming the same with a video camera whereas the distances from the installation shafts to the house connections are marked, and using the markings the house connections are installed at the distances in the correct order, additionally the connection module is turned in a way that places the hole (opening) of the module at the place for the inlet pipe of the house.
  • the method comprises steps, wherein an injection head with its resin transfer tubes is pushed to the position of the connection, the puncture/injection nozzle is placed axially in the tube between the marked boundary areas and the injection head is pushed through the wall of the module using a hydraulic cylinder. After this polyurethane or other hardening material is pumped into the insulation collar. The rise of the pressure of the urethane indicates when a sufficient tightness is achieved, whereby the nozzle piece is drawn back into the tube by the hydraulics. The back valve prevents the not yet hardened material from flowing through the punctured wall of the module.
  • Fig 1 shows a house-connection module with the cover profile arranged in place.
  • Fig 2 shows the house-connection module and the cover profile separately.
  • Fig 3 shows a back valve arranged in its groove.
  • Fig 4 shows the injection of urethane and the injection situation in the installation step.
  • an extruded tube 4 is used for making a house connection module 2.
  • the manufacturing starts by cutting the tube 4 to fixed length.
  • the tube is then turned according to the demands of the male and female binding ends.
  • 50-200mm, preferably 100 mm wide grooves for the back valves 22 are also turned.
  • a groove is additionally turned for the sealing tape 10.
  • a hole 18 for the house connection is drilled at the center of the module. Rubber bands are placed in the turned grooves, which bands function as back valves 22 and the boundary edges 12 of the back valves 22 are marked on the inside of the module.
  • Sealing collars 14 are arranged on the outside of the back valves 22 in which collars the insulation material is injected during the installation step.
  • a sealing tape 10 is arranged in the grooves turned for it.
  • a cover profile 16 is made, which fits into hole 18 of module 2, to be arranged in connection module 2.
  • the module can be made by injection moulding a ready module in its final shape, in which case the need for turning disappears.
  • connection module according to the invention is additionally to lower production costs, that no special back valve or the installation of the same is needed, which is both harder and more time consuming that CNC-turning of a groove and installation of a rubber band.
  • the solution according to the invention is also cheaper than the previously known.
  • a house connection module with a cover profile 16 arranged around the connection hole 18 is installed without any digging, through a sewer inspection shaft. Before the actual installation the existing pipeline is cleaned and filmed with a video camera. In connection to the filming the distances to the house connections from the installation shaft are marked. Based on the measurements the special modules 2 for the house connections can be installed in the correct order, so that the connection module 2 is at the inlet pipe of the house connection.
  • connection module 2 When the connection module 2 is at the correct place it is rotated so that the opening 18 of the module is at the inlet pipe of the house.
  • injection apparatus 20 which comprises a blender and pumping unit, tubes and an injection head, is prepared for injection of polyurethane.
  • the injection head and its resin transportation tubes are pushed inside the pipe to the first sealing collar 14 of the connection module 2, then the injection head is pushed through the wall of the module with the help of a hydraulic cylinder.
  • Polyurethane is pumped through the injection head into the sealing collar 14 until the rising pressure of the urethane indicates that a sufficient fullness and thereby a sufficient thickness for the insulation is reached.
  • the nozzle piece is drawn back into the pipe by the hydraulics, whereas the back valve prevents the unhardened resin from flowing back into the pipe through the pierced hole. The same operation is repeated at the second sealing collar of the connection module 2.
  • a dosing apparatus for two-component resin and a specially made injection head the central parts of which are a forth and back operating hydraulic cylinder for punctuation, and an actual punctuation and injection head are needed, apart from the connection module.
  • the hydraulic cylinder is used as described above, for pushing the injection head through the wall and for releasing it after the injection.
  • the manufacturing and installation method for a house-connection module according to the invention solves the problems found in the present methods as well as the slowness of installation work and the high costs.
  • the solution according to the invention is especially preferable therein that the problem relating to the direction of the injection head to the valve of the module in the prior art is solved.
  • the solution according to the present invention is faster and requires less preciseness in the injection step, as the injection nozzle does not need to be directed more precisely than that it hits inside the boundaries of the back valve. This makes the installation essentially faster and results in that the total installation work can be carried through faster, which leads to lower installation costs and that the spacious pipes and installation equipment can be removed from densely habituated and highly trafficked areas faster.

Abstract

The invention is directed to a method for manufacturing of a house connection module wherein a tube of fixed length with male and female connection ends is manufactured, in the centre of which a hole is formed for a house connection, and a sealing tape is arranged in its own groove at the male end, wherein a groove is formed around the outer peripheral surface of the tube for a back valve at both sides of the centrally located hole, rubber bands are arranged in the grooves, a sealing collar is arranged on the outside of the rubber bands; and the boundary edges of the back valve are marked on the inside of the tube. The invention is also directed to a house-connection module and a method for installation of the house-connection module in a pipeline.

Description

Method for manufacturing a house-connection module, a house-connection module and a method for installing the house-connection module in a pipe system
Field of the invention
The invention is directed to a method of injecting polyurethane or another curable material into special modules for pipelines that are to be installed at house- connections and a module.
B ackground o f the invention
Using present techniques a special module is installed at a house-connection in a pipeline. The space between the module and the pipeline to be reconstructed is sealed by injection of polyurethane in expansion collars in the line on both sides of the connection. The injection is carried out with a device that is pushed into the pipe, the nozzle of which is directed into an injection valve arranged on the inner surface of the module. The task can be carried out without any digging, through the sewer inspection shaft.
Drawbacks of present methods are installation difficulties and a phase in the installation phase where an injection nozzle is directed to the valve of the module. Other disadvantages in the present methods are the slowness of installation work that leads apart from high installation costs to the need for the customer to adapt to the need of space needed by the installation equipment, pipes and installation team, sometimes in very highly habituated and trafficked areas.
Summary of the invention
The present invention is directed to a new method for manufacturing and installation of VipLiner house-connections and a house-connection. The module is made by cutting an extruded tube at a fixed length and drilling a hole at the centre for a house connection. The cut tube is turned according to the demands of the male and female connection ends and a sealing tape is arranged in the male end in its own groove, additionally grooves are turned at both sides of the drilled hole in the center of the tube for a back valve and rubber bands are fitted in the grooves and the edges of the back valve are marked on the inner surface of the tube. A sealing collar is mounted on the outside of the back valve. Additionally a cover profile is made, which is directed to the hole drilled for the house connection. The module can also be made by injection moulding, in which case there is no need for turning.
A method for installing a house connection module in a pipeline comprising cleaning of the old pipeline and filming the same with a video camera whereas the distances from the installation shafts to the house connections are marked, and using the markings the house connections are installed at the distances in the correct order, additionally the connection module is turned in a way that places the hole (opening) of the module at the place for the inlet pipe of the house. Additionally the method comprises steps, wherein an injection head with its resin transfer tubes is pushed to the position of the connection, the puncture/injection nozzle is placed axially in the tube between the marked boundary areas and the injection head is pushed through the wall of the module using a hydraulic cylinder. After this polyurethane or other hardening material is pumped into the insulation collar. The rise of the pressure of the urethane indicates when a sufficient tightness is achieved, whereby the nozzle piece is drawn back into the tube by the hydraulics. The back valve prevents the not yet hardened material from flowing through the punctured wall of the module.
Brief description of the drawings
In the attached figures, Fig 1 shows a house-connection module with the cover profile arranged in place. Fig 2 shows the house-connection module and the cover profile separately. Fig 3 shows a back valve arranged in its groove.
Fig 4 shows the injection of urethane and the injection situation in the installation step.
Detailed description of the invention
In one embodiment of the invention an extruded tube 4 is used for making a house connection module 2. The manufacturing starts by cutting the tube 4 to fixed length. The tube is then turned according to the demands of the male and female binding ends. At this point 50-200mm, preferably 100 mm wide grooves for the back valves 22 are also turned. At the male end 8 a groove is additionally turned for the sealing tape 10. A hole 18 for the house connection is drilled at the center of the module. Rubber bands are placed in the turned grooves, which bands function as back valves 22 and the boundary edges 12 of the back valves 22 are marked on the inside of the module. Sealing collars 14 are arranged on the outside of the back valves 22 in which collars the insulation material is injected during the installation step. At the male end 8 a sealing tape 10 is arranged in the grooves turned for it. Also a cover profile 16 is made, which fits into hole 18 of module 2, to be arranged in connection module 2.
Alternatively the module can be made by injection moulding a ready module in its final shape, in which case the need for turning disappears.
Advantages of the connection module according to the invention to known modules is additionally to lower production costs, that no special back valve or the installation of the same is needed, which is both harder and more time consuming that CNC-turning of a groove and installation of a rubber band. The solution according to the invention is also cheaper than the previously known. A house connection module with a cover profile 16 arranged around the connection hole 18 is installed without any digging, through a sewer inspection shaft. Before the actual installation the existing pipeline is cleaned and filmed with a video camera. In connection to the filming the distances to the house connections from the installation shaft are marked. Based on the measurements the special modules 2 for the house connections can be installed in the correct order, so that the connection module 2 is at the inlet pipe of the house connection. When the connection module 2 is at the correct place it is rotated so that the opening 18 of the module is at the inlet pipe of the house. After this the injection apparatus 20, which comprises a blender and pumping unit, tubes and an injection head, is prepared for injection of polyurethane. The injection head and its resin transportation tubes are pushed inside the pipe to the first sealing collar 14 of the connection module 2, then the injection head is pushed through the wall of the module with the help of a hydraulic cylinder. Polyurethane is pumped through the injection head into the sealing collar 14 until the rising pressure of the urethane indicates that a sufficient fullness and thereby a sufficient thickness for the insulation is reached. The nozzle piece is drawn back into the pipe by the hydraulics, whereas the back valve prevents the unhardened resin from flowing back into the pipe through the pierced hole. The same operation is repeated at the second sealing collar of the connection module 2.
The advantages of this method compared to the prior art is that there is no longer any need for precise direction of the nozzle head, it is sufficient if the nozzle head is within the boundary area of the back valve. Thus the total work time for a house connection is also shorter than when using conventional methods. The manufacturing of a house connection module becomes faster and less expensive when using the method according to the invention compared to formerly used techniques.
For carrying out the method a dosing apparatus for two-component resin and a specially made injection head the central parts of which are a forth and back operating hydraulic cylinder for punctuation, and an actual punctuation and injection head are needed, apart from the connection module. The hydraulic cylinder is used as described above, for pushing the injection head through the wall and for releasing it after the injection.
The manufacturing and installation method for a house-connection module according to the invention solves the problems found in the present methods as well as the slowness of installation work and the high costs. The solution according to the invention is especially preferable therein that the problem relating to the direction of the injection head to the valve of the module in the prior art is solved. The solution according to the present invention is faster and requires less preciseness in the injection step, as the injection nozzle does not need to be directed more precisely than that it hits inside the boundaries of the back valve. This makes the installation essentially faster and results in that the total installation work can be carried through faster, which leads to lower installation costs and that the spacious pipes and installation equipment can be removed from densely habituated and highly trafficked areas faster.
The choice between an injection moulded and an extruded and turned product can be made considering the size of the series and by optimizing investment costs and labor costs.

Claims

Claims
1. A method for making a house connection module, wherein a tube of fixed length with male and female connection ends is manufactured, in the centre of which a hole is formed for a house connection, and a sealing tape is arranged in its own groove at the male end, wherein a groove is formed around the outer peripheral surface of the tube for a back valve at both sides of the centrally located hole; rubber bands are arranged in the grooves; a sealing collar is arranged on the outside of the rubber bands; and the boundary edges of the back valve are marked on the inside of the tube.
2. The method according to claim 1, wherein the module is made from an extruded tube, which is cut into fixed length and the male and female connection ends and the grooves for the back valves are made by turning.
3. The method according to claim 1, wherein the module is made by injection moulding it into its final shape.
4. The method according to claim 1, wherein the rubber bands arranged in the grooves function as recoil valves.
5. The method according to claim 1, wherein a cover profile is arranged on the house connection module.
6. A house connection module comprising a tube, in the center of which a hole is formed for a house connection, wherein on both sides of the central hole a groove is formed around the outer peripheral surface of the tube for a back valve, each groove having a rubber band arranged therein.
7. The house connection module according to claim 6, wherein the rubber bands arranged in the grooves function as back valves.
8. The house connection module according to claim 6, wherein the module is made from a fixed length extruded tube the ends of which are turned to male and female connection ends.
9. The house connection module according to claim 6, wherein the grooves are made by turning.
10. The house connection module according to claim 6, wherein the module is injection molded into its final shape.
11. The house connection module according to claim 6, wherein the grooves for the back valves are 50-200 mm wide, preferably about 100 mm wide.
12. The house connection module according to claim 11, wherein the boundary edges of the back valves are marked on the inner surface of the module.
13. The house connection module according to claim 11 , wherein a sealing collar is arranged on the outside of the back valves.
14. The house connection module according to claim 11, wherein the sealing collar is of thermo elastic material that is attached on the module by welding.
15. The house connection module according to claim 11, wherein a sealing tape is arranged at the male end in its own groove.
16. The house connection module according to claim 11 , wherein a cover profile is installed for sealing of the connection.
17. A method for installation of a house-connection module in a pipeline wherein: the old pipeline to be reconstructed is cleaned and filmed with a video 5 camera; the distances of the house-connections to installation wells are marked; using the markings the house connections are installed at the distances in the correct order; each connection module is rotated in a way that places the hole of the o module at the place for the inlet pipe of the house; an injection head with its resin transfer tubes is pushed to the position of the insulation collar of a connection module; characterized therein, that a puncture/injection nozzle in the injection head is placed axially in the tube 5 between the marked boundary areas and is pushed through the wall of the module using a hydraulic cylinder; polyurethane or other curable material is pumped inside the sealing collar; the rise of pressure of the urethane is used to indicate when a sufficient tightness is achieved; o the nozzle piece is drawn back into the tube by the hydraulics, and the steps are repeated at the other sealing collar of the connection-module.
18. The method according to claim 17, wherein a recoil valve is used to prevent the unhardened resin from running through the pierced hole into the 5 pipeline.
19. The method according to claim 17, wherein a cover profile is installed for sealing of the connection.
0
EP06764491.4A 2005-06-10 2006-06-09 Method for manufacturing a house-connection module, a house-connection module and a method for installing the house-connection module in a pipe system Withdrawn EP1888963A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20050618A FI119658B (en) 2005-06-10 2005-06-10 Housing connection module and procedure for its manufacture
PCT/FI2006/050246 WO2006131605A1 (en) 2005-06-10 2006-06-09 Method for manufacturing a house-connection module, a house-connection module and a method for installing the house-connection module in a pipe system

Publications (2)

Publication Number Publication Date
EP1888963A1 true EP1888963A1 (en) 2008-02-20
EP1888963A4 EP1888963A4 (en) 2014-03-05

Family

ID=34778338

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06764491.4A Withdrawn EP1888963A4 (en) 2005-06-10 2006-06-09 Method for manufacturing a house-connection module, a house-connection module and a method for installing the house-connection module in a pipe system

Country Status (6)

Country Link
EP (1) EP1888963A4 (en)
JP (1) JP2008542665A (en)
FI (1) FI119658B (en)
NO (1) NO20080093L (en)
RU (1) RU2391598C2 (en)
WO (1) WO2006131605A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4504086A (en) * 1983-01-10 1985-03-12 Phillips Petroleum Company Pipe tee
EP0337031A1 (en) * 1988-04-13 1989-10-18 OY WIIK & HÖGLUND AB Improved sewer pipe relining method
US5676404A (en) * 1996-02-12 1997-10-14 Sisk; David E. Low profile flanged tee

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8506556D0 (en) * 1985-03-13 1985-04-17 Brickhouse Dudley Plc Grouting method
JPH04248096A (en) * 1991-01-23 1992-09-03 Osaka Gas Co Ltd Gas leaking prevention method in pipe connection section
US5351720A (en) * 1992-03-10 1994-10-04 Link-Pipe, Inc. Apparatus for repairing conduits
JP3507606B2 (en) * 1995-12-15 2004-03-15 積水化学工業株式会社 Construction method of sewer
DE20008293U1 (en) * 2000-05-09 2000-07-27 Jansen Franz Device for repairing underground sewers or the like.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4504086A (en) * 1983-01-10 1985-03-12 Phillips Petroleum Company Pipe tee
EP0337031A1 (en) * 1988-04-13 1989-10-18 OY WIIK & HÖGLUND AB Improved sewer pipe relining method
US5676404A (en) * 1996-02-12 1997-10-14 Sisk; David E. Low profile flanged tee

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2006131605A1 *

Also Published As

Publication number Publication date
EP1888963A4 (en) 2014-03-05
RU2008100034A (en) 2009-07-20
NO20080093L (en) 2008-01-07
RU2391598C2 (en) 2010-06-10
JP2008542665A (en) 2008-11-27
FI20050618A (en) 2006-12-11
WO2006131605A1 (en) 2006-12-14
FI20050618A0 (en) 2005-06-10
FI119658B (en) 2009-01-30

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