WO2002021036A1 - Inflatable seal - Google Patents

Inflatable seal Download PDF

Info

Publication number
WO2002021036A1
WO2002021036A1 PCT/GB2001/003769 GB0103769W WO0221036A1 WO 2002021036 A1 WO2002021036 A1 WO 2002021036A1 GB 0103769 W GB0103769 W GB 0103769W WO 0221036 A1 WO0221036 A1 WO 0221036A1
Authority
WO
WIPO (PCT)
Prior art keywords
envelope
duct
sheet portions
envelope according
sealing
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.)
Ceased
Application number
PCT/GB2001/003769
Other languages
French (fr)
Inventor
Richard Graf
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.)
Tyco Electronics Raychem GmbH
Tyco Electronics UK Ltd
Original Assignee
Tyco Electronics Raychem GmbH
Tyco Electronics UK Ltd
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 Tyco Electronics Raychem GmbH, Tyco Electronics UK Ltd filed Critical Tyco Electronics Raychem GmbH
Priority to AU2001279983A priority Critical patent/AU2001279983A1/en
Publication of WO2002021036A1 publication Critical patent/WO2002021036A1/en
Anticipated expiration legal-status Critical
Ceased 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
    • F16L55/10—Means for stopping flow in pipes or hoses
    • F16L55/12—Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ
    • F16L55/128—Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
    • 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
    • F16L55/10—Means for stopping flow in pipes or hoses
    • F16L55/12—Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ
    • F16L55/128—Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
    • F16L55/132—Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Pipe Accessories (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

An inflatable seal (20) for closing an empty elongate duct, or for sealing cables as they pass out through a duct, is formed by welding two sheets (22,24) of polymeric laminate material together at their peripheries and also at a number of locations over their surfaces (26). An envelope thus produced has a plurality of generally elongate parallel tubes (27) in communication with each other, giving a contoured outer surface. When the envelope is rolled lengthwise over onto itself, the contouring provides mechanical interlocking, thereby resisting movement of the inflated seal along the duct.

Claims

6 Claims
1. A flexible envelope for sealing a duct, the envelope having an outer surface defined by two sheet portions that overlie each other and that are secured to each other at a plurality of locations internally of the envelope to define a plurality of inflatable chambers in communication with each other, sealing means being provided on the outer surface to seal the envelope to the duct.
2. An envelope according to claim 1, wherein the securement of the sheet portions to each other is effected by welding the sheet portions together.
3. An envelope according to claim 1, wherein the securement of the sheet portions to each other is effected by bonding, preferably by the formation of adhesive bonds.
4. An envelope according to any of the preceding claims, wherein the securement locations extend along at least one substantially straight line.
5. An envelope according to claim 4, wherein the securement locations extend discretely along said at least one line.
6. An envelope according to any one of the preceding claims, wherein the two sheet portions are formed from separate sheets that are sealed together peripherally.
7. An envelope according to any one of claims 1 to 5, wherein the two sheet portions are formed from a single sheet that is folded over and sealed peripherally.
8. An envelope according to any one of claims 1 to 5, wherein the two sheet portions are formed from a single tubular member.
9. An envelope according to any one of the preceding claims, wherein each sheet portion is of laminate construction.
10. An envelope according to claim 9, wherein the laminate comprises metallised polymeric material.
11. An envelope according to any one of the preceding claims, of generally rectangular configuration.
12. An envelope according to any one of the preceding claims, wherein the sealing means comprises a layer of mastic or adhesive.
13. An envelope according to any one of the preceding claims, wherein the sealing means comprises elastic material.
14. A duct sealed by an inflated envelope in accordance with any one of the preceding claims being inserted therein.
15. A duct according to claim 14 having at least one elongate member extending therefrom, and wherein the envelope seals the or each elongate member into the duct, and the sealing means seals the envelope to the or each elongate member.
16. A duct according to claim 14 or 15, wherein the envelope is wrapped over onto itself with the inflated chambers thereof interlocking thereby to resist movement of the envelope along the duct.
17. A method of sealing a duct, wherein an envelope according to any one of claims 1 to 13 is inserted into the duct and inflated into sealing contact therewith.
18. A method according to claim 17, wherein the duct has at least one elongate member extending therefrom and the envelope is positioned to seal the or each member within the duct.
19. A method according to claim 17 or 18, wherein the envelope is wrapped around onto itself.
PCT/GB2001/003769 2000-09-05 2001-08-22 Inflatable seal Ceased WO2002021036A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001279983A AU2001279983A1 (en) 2000-09-05 2001-08-22 Inflatable seal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0021797A GB0021797D0 (en) 2000-09-05 2000-09-05 Inflatable seal
GB0021797.6 2000-09-05

Publications (1)

Publication Number Publication Date
WO2002021036A1 true WO2002021036A1 (en) 2002-03-14

Family

ID=9898894

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2001/003769 Ceased WO2002021036A1 (en) 2000-09-05 2001-08-22 Inflatable seal

Country Status (3)

Country Link
AU (1) AU2001279983A1 (en)
GB (1) GB0021797D0 (en)
WO (1) WO2002021036A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2148087A3 (en) * 2008-07-24 2013-11-20 General Electric Company Expandable cable support for wind turbine
US20230204143A1 (en) * 2020-06-10 2023-06-29 Noaq Flood Protection Ab Pipe plug arrangement and method for activating such pipe plug arrangement

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1223605A (en) 1968-02-22 1971-02-24 Richard Bruce Sharp An improved sealing device
DE2457412A1 (en) * 1974-12-05 1976-06-10 Immanuel Jeschke Arrgmt for sealing a pipe line - consists of elastomer sleeves which are axially compressed by a flexible screw
GB2056012A (en) * 1979-08-07 1981-03-11 Kurukulasuriya M Stopper to Block Circular Pipes Tunnels etc.
EP0152696A2 (en) 1983-12-19 1985-08-28 Raychem Gmbh Expansible seal
EP0377141A2 (en) * 1989-01-02 1990-07-11 Günter Kempken Pipe control and closure device
WO2000047928A1 (en) * 1999-02-11 2000-08-17 Glynwed Pipe Systems Limited Apparatus for stopping flow through a pipe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1223605A (en) 1968-02-22 1971-02-24 Richard Bruce Sharp An improved sealing device
DE2457412A1 (en) * 1974-12-05 1976-06-10 Immanuel Jeschke Arrgmt for sealing a pipe line - consists of elastomer sleeves which are axially compressed by a flexible screw
GB2056012A (en) * 1979-08-07 1981-03-11 Kurukulasuriya M Stopper to Block Circular Pipes Tunnels etc.
EP0152696A2 (en) 1983-12-19 1985-08-28 Raychem Gmbh Expansible seal
EP0377141A2 (en) * 1989-01-02 1990-07-11 Günter Kempken Pipe control and closure device
WO2000047928A1 (en) * 1999-02-11 2000-08-17 Glynwed Pipe Systems Limited Apparatus for stopping flow through a pipe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2148087A3 (en) * 2008-07-24 2013-11-20 General Electric Company Expandable cable support for wind turbine
US20230204143A1 (en) * 2020-06-10 2023-06-29 Noaq Flood Protection Ab Pipe plug arrangement and method for activating such pipe plug arrangement

Also Published As

Publication number Publication date
GB0021797D0 (en) 2000-10-18
AU2001279983A1 (en) 2002-03-22

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