GB2111624A - Fire-resistant sleeve - Google Patents
Fire-resistant sleeve Download PDFInfo
- Publication number
- GB2111624A GB2111624A GB08137638A GB8137638A GB2111624A GB 2111624 A GB2111624 A GB 2111624A GB 08137638 A GB08137638 A GB 08137638A GB 8137638 A GB8137638 A GB 8137638A GB 2111624 A GB2111624 A GB 2111624A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sleeve
- fire
- pipe
- service
- canister
- 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- Withdrawn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
- F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
- F16L5/02—Sealing
- F16L5/04—Sealing to form a firebreak device
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Building Environments (AREA)
Abstract
A fire-resistant sleeve 10 for fitting around a service, such as a cable, pipe, trunking or ductwork, passing through an orifice in a floor or wall, forms a fire-resistant seal on the outbreak of fire. The sleeve 10 comprises an annular canister made up of two segments 12, 14, each having a sheet steel outer wall 16 and a PVC inner sleeve 22 between which are sandwiched strips of intumescent sheet material. The segments 12, 14 are hinged together by a hinge 28 and secured by a toggle after positioning around the service.
Description
SPECIFICATION
Fire-resistant sleeves
This invention relates to fire-resistant sleeves for forming, on the outbreak of fire, a fire-resistant seal where a pipe, cable, cable trunking or ductwork passes through a wall or floor of a building.
The problems of providing such a fire-resistant seal are discussed in our co-pending Application No.
8117152 and a fire-resistant sleeve which overcomes or mitigates these problems is there described and claimed. Another approach to overcoming these problems is constituted by a fire-resistant sleeve comprising two galvanised steel half-shells, each containing an intumescent liner and which are secured together after having been fitted around a plastic pipe by sliding a clamping strip over pairs of flanges provided at the juxtaposed edges of each half-shell.Such a fire-sleeve, although embodying a principle which is usually effective in operation, has the disadvantages that the intumescent material is not protected from mechanical and chemical damage during and after installation; that it is often difficult to fitihe shells together; and that it is possible for shells of different size and type to become mixed up before assembly or for the small, loose parts mislaid.
According to the present invention there is provided a fire-resistant sleeve for fitting around a service, such as a cable, pipe, trunking or ductwork, passing through an orifice or piercing in a fire-resis tantstructure, for example a floor or wall, and which forms a fire-resistant seal on the outbreak of fire, the sleeve comprising an annular casing having its outer wallsformed of a rigid, fire-resistant material and the inner walls, which are in use presented to the service, formed of a non-fire-resistant material, and constituted by a number of segments each containing a body of intumescent material sealed within the casing, the arrangement being such that in normal conditions the intumescent material is protected from mechanical and chemical damage and on the outbreak of fire expands inwardly to form a seal between the orifice or piercing and the service whether in a deformed or undeformed condition.
Preferably each segment is hinged to its neighbour at all but one pair of juxtaposed edges to allow the sleeve to be fitted around the service, said one pair being securable after fitting by securing means preferably constituted by one or more toggle clips.
In certain circumstances, for example where the sleeve is to be fitted around a steel pipe, the inner wall may be omitted, particularly if the intumescent
material is in sealed strip form, and in such circumstances each segment is hinged to its neighbour in the
manner described above.
Preferably the outer walls of the segments are formed of sheet steel and the inner walls of a thermoplastic sheet material, for example PVC.
The body of intumescent material may be formed of paste or granular material but is preferably constituted by one or more moulded shells. Most preferably the body of intumescent material is made up of a number of layers of thin, juxtaposed strips, each layer being mounted on a sheet of flexible backing material, for example metal foil which gives good heat conduction, or cloth.
Where the wall or floor is thick and the casing correspondingly long a saving in the amount of intumescent material required may be made by providing a body of intumescent material at each end only of the casing and filling the space between with a suitable combustible or incombustible material such as calcium silicate which retains its integrity under fIre conditions.
Generally the annular casing has a circular internal cross-section, for fitting around a service of circular cross-section, and a corresponding external cross section, but when the service is of rectangular cross-section as, for example, is most trunking, the casing is of corresponding rectangular cross-section; the segments may then be constituted by pairs of adjacent sides, i.e. be of L-section; or by one full side and parts of two adjacent sides, i.e. be of a section resembling a square capital U with arms of equal or unequal length; again the segments may be hinged at three corners.
According to the intended mode of installation the casing may have a radially-projecting flange at one or each end or at an intermediate position. Again the casing may have longitudinally-projecting flanges which overlie the service; where this is a trunking the flanges may be secured thereto by, for example, self-tapping screws.
The sleeve according to the invention may be used in conjunction with a collar having a sleeve portion which fits between the service and the inner wall and a flange which overlies a surface of the floor or wall through which the service passes. The collars are normally formed of a low-melting point material, typically PVC or ABS, that does not interfere with the action of the intumescent material.
Cold-smoke seals may advantageously be incorporated with the sleeve according to the present invention: any appropriate type, for example neoprene strip or blade, brush or O-ring, may be em pioyed. The seal may be secured to the outer surface of the inner wall or behind the flanges of the collars, if employed.
Although the invention may be carried out in a variety of ways, one particular embodiment thereof will now be described, by way of example, with reference to the accompanying drawings in which:
Figure 1 is a perspective view of a fire-resistant sleeve according to the invention;
Figure 2 is another perspective view of the sleeve of Figure 1;
Figure 3 is an exploded perspective view of the
outer walls of the sleeve of Figures 1 and 2; and
Figure 4 is a perspective view of one of the inner walls of the sleeve of Figures 1 and 2.
The fire-resistant sleeve shown in the drawings
has the form of an annular canister 10 made up of two semi-cylindrical segments 12, 14 each of which
The drawings originally filed were informal and the print here reproduced is taken
from a later filed formal copy.
comprises an 18 swg sheet steel, semi-cylindrical,
outer shell 16 (see Fig. 3) having at each end a
terminal flange 18 with a peripheral lip 20 lying in
the axial plane. The cavity defined by each shell 16 is
filled with several layers of intumescent strip mate
rial (not shown), being that sold by BASF under the
trade mark PALUSOL; each layer consists of a
number of adjacent axially-aligned strips which are
maintained in their correct relative positions by
being mounted on a layer of aluminium foil. Each outer layer has an extra strip at each end which is folded up to lie against a respective flange 18.
Each segment 12, 14 also comprises a semi-cylindrical inner sleeve 22 which is vacuum formed from sheet PVC with a longitudinal flange 24 at each side edge and an arcuate lip 26 at each end edge. The intumescent material is sealed within the respective shells 16 by means of a sleeve 22 which is secured in position by means of adhesive between the juxtaposed surfaces of the flanges 18 and lips 20 of the shell 16 of the flanges 24 and lips 26 of the sleeve 22.
As shown in Figure 1 the two segments 12, 14 are hinged together at one side of the canister 10 by a hinge 28 and are securable in position around a pipe by means of a toggle catch 30 at the other side.
If the canister occupies the gap between a metal pipe or a pipe surrounded by an incompressible insulating layer pipe, and a floor or wall through which the pipe passes, the intumescent material will, on the outbreak of fire, expand to seal the gap as no resistance is of course offered by the softened PVC.
The intumescent material when expanded exerts an inwardly directed pressure of 5 bar which is sufficient to crush a PVC pipe if the canister 10 is used therearound, thus allowing the intumescent material to fill the void apart from any region occupied by fire-degraded PVC.
If the canister 10 is used around a pipe surrounded by compressible or thermally-degradable insulation, the intumescent material will expand to fill the void left by the compression or degradation of the insulation caused by the outbreak of fire.
If collars are employed in conjunction with the canister 10, these may be of the plastics material described earlier or be of metal, e.g. stainless steel, in which case the sleeve portion is of mesh form, this sheet metal or low-melting point allow.
An advantage afforded by the canister 10 is that it may be used in conjunction with an insulated pipe having a surrounding vapour seal, without removing the insulation or the seal.
A cold smoke seal, if employed, may be fitted to the canister 10 as described earlier or to the pipe itself.
CLAlMS 1. A fire-resistant sleeve for fitting around a service, such as a cable, pipe, trunking or ductwork, messing through an orifice or piercing in a fire-resis stunt structuY e; for example a floor or wall, and which -orms a ;#re-resistant seal on the outbreak oYirea Y;;,e a Ieeve comprising an annular casing having an oeeae jaIl former of a rigid fire-resistant material snd constituted by a number of segments each contaqn- ing a body of intuwnescent nzaterist at attached to the asking, the arrnngement being such than in ~FilCH < uai coilclitions the inturnescent material is protected from mechanical and chemical damage and on the outbreak of fire expands inwardly to form a seal between the orifice or piercing and the service whether in a deformed or undeformed condition.
2. A sleeve as claimed in Claim 1, in which the annular casing additionally comprises an inner wall, which is, in use, presented to the service, formed of a non-fire-resistant material.
3. A sleeve as claimed in Claim 2, in which the inner wall is formed of a thermoplastic sheet material.
4. A sleeve as claimed in any preceding claim, in which the outer wall is formed of sheet steel.
5. A sleeve as claimed in any preceding claim, in which each segment is hinged to its neighbour at ail but one pair of juxtaposed edges to allowthe sleeve to be fitted around the service.
6. A sleeve as claimed in Claim 5 and additionally comprising securing means for securing together said one pair after fitting of the sleeve around the service.
7. A sleeve as claimed in any preceding claim, in which the intumescent material comprises a moulded shell.
8. A sleeve as claimed in any preceding claim, in which the intumescent material comprises a number of layers of thin, juxtaposed strips, each layer being mounted on a sheet of flexible backing material.
9. A sleeve as claimed in any preceding claim, in which the body of intumescent material is provided at each end only of the casing, the space between said bodies being filled with a suitable combustible or incombustible material which retains its integrity under fire conditions.
10. Asleeve as claimed in any preceding claim and having a circular internal cross-section.
11. A sleeve as claimed in any preceding claim and having a rectangular internal cross-section.
12. A sleeve as claimed in Claim 11, in which the constituent segments are each of U-section with arms of unequal length.
13. A sleeve as claimed in any preceding claim and additionally comprising at least one radial flange.
14. Asleeve as claimed in any preceding claim and additionally comprising at least one longitudinal flange.
15. A sleeve as claimed in any preceding claim and additionally comprising a collar having a sleeve portion which fits between the service and the casing and a flange which overlies a surface of the floor or wall through which the service passes.
16. A sleeve as claimed in any preceding claim and additionally comprising at least one cold smoke seal.
17. A sleeve as claimed in Claim 1 and substan tially as herein described.
18. A fire-resistant sleeve, substantially as herein described with reference to the accompanying draw
nags.
19. The features as herein disclosed, or their equivalents, in any novel selection.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (19)
1. A fire-resistant sleeve for fitting around a service, such as a cable, pipe, trunking or ductwork, messing through an orifice or piercing in a fire-resis stunt structuY e; for example a floor or wall, and which -orms a ;#re-resistant seal on the outbreak oYirea Y;;,e a Ieeve comprising an annular casing having an oeeae jaIl former of a rigid fire-resistant material snd constituted by a number of segments each contaqn- ing a body of intuwnescent nzaterist at attached to the asking, the arrnngement being such than in ~FilCH < uai coilclitions the inturnescent material is protected from mechanical and chemical damage and on the outbreak of fire expands inwardly to form a seal between the orifice or piercing and the service whether in a deformed or undeformed condition.
2. A sleeve as claimed in Claim 1, in which the annular casing additionally comprises an inner wall, which is, in use, presented to the service, formed of a non-fire-resistant material.
3. A sleeve as claimed in Claim 2, in which the inner wall is formed of a thermoplastic sheet material.
4. A sleeve as claimed in any preceding claim, in which the outer wall is formed of sheet steel.
5. A sleeve as claimed in any preceding claim, in which each segment is hinged to its neighbour at ail but one pair of juxtaposed edges to allowthe sleeve to be fitted around the service.
6. A sleeve as claimed in Claim 5 and additionally comprising securing means for securing together said one pair after fitting of the sleeve around the service.
7. A sleeve as claimed in any preceding claim, in which the intumescent material comprises a moulded shell.
8. A sleeve as claimed in any preceding claim, in which the intumescent material comprises a number of layers of thin, juxtaposed strips, each layer being mounted on a sheet of flexible backing material.
9. A sleeve as claimed in any preceding claim, in which the body of intumescent material is provided at each end only of the casing, the space between said bodies being filled with a suitable combustible or incombustible material which retains its integrity under fire conditions.
10. Asleeve as claimed in any preceding claim and having a circular internal cross-section.
11. A sleeve as claimed in any preceding claim and having a rectangular internal cross-section.
12. A sleeve as claimed in Claim 11, in which the constituent segments are each of U-section with arms of unequal length.
13. A sleeve as claimed in any preceding claim and additionally comprising at least one radial flange.
14. Asleeve as claimed in any preceding claim and additionally comprising at least one longitudinal flange.
15. A sleeve as claimed in any preceding claim and additionally comprising a collar having a sleeve portion which fits between the service and the casing and a flange which overlies a surface of the floor or wall through which the service passes.
16. A sleeve as claimed in any preceding claim and additionally comprising at least one cold smoke seal.
17. A sleeve as claimed in Claim 1 and substan tially as herein described.
18. A fire-resistant sleeve, substantially as herein described with reference to the accompanying draw
nags.
19. The features as herein disclosed, or their equivalents, in any novel selection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08137638A GB2111624A (en) | 1981-12-14 | 1981-12-14 | Fire-resistant sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08137638A GB2111624A (en) | 1981-12-14 | 1981-12-14 | Fire-resistant sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2111624A true GB2111624A (en) | 1983-07-06 |
Family
ID=10526589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08137638A Withdrawn GB2111624A (en) | 1981-12-14 | 1981-12-14 | Fire-resistant sleeve |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2111624A (en) |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0226190A1 (en) * | 1985-12-13 | 1987-06-24 | E. Missel GmbH & Co. | Sealing device |
| GB2216220A (en) * | 1988-03-03 | 1989-10-04 | Mann Mcgowan Fabrications Ltd | Fire damper sleeves |
| WO1991004074A1 (en) * | 1989-09-14 | 1991-04-04 | Chemische Fabrik Grünau Gmbh | Pipe grommet |
| GB2212187B (en) * | 1987-11-12 | 1991-11-27 | Furukawa Electric Co Ltd | Fire/smoke protection structure for a plastic pipe or cable channel portion in a floor or wall |
| GB2252456A (en) * | 1990-12-11 | 1992-08-05 | Aaf Distribution Limited | Fire stop seals for pipes and cables |
| US5312137A (en) * | 1990-03-27 | 1994-05-17 | Ramco Manufacturing Company, Inc. | Safety shield |
| US5489124A (en) * | 1990-03-27 | 1996-02-06 | Ramco Manufacturing Company, Inc. | Safety shield |
| AU690721B2 (en) * | 1994-08-29 | 1998-04-30 | Promat Australia Pty Ltd | A fire sealing collar |
| WO2000068608A1 (en) * | 1999-05-07 | 2000-11-16 | Promat Fyreguard Pty Ltd | Service shut off device |
| AU766350B2 (en) * | 1999-05-07 | 2003-10-16 | Promat Australia Pty Ltd | Service shut off device |
| FR2877372A1 (en) * | 2004-10-28 | 2006-05-05 | Compart Sas Soc Par Actions Si | FIRE PROTECTION DEVICE |
| FR2943115A1 (en) * | 2009-03-10 | 2010-09-17 | Poujoulat | EQUIPMENT FOR FILLING THE PERFORMANCE OF AN ORIFICE MADE IN A WALL FOR PERMITTING THE PASSAGE OF A CONDUIT |
| EP2467914A2 (en) * | 2009-08-21 | 2012-06-27 | 3M Innovative Properties Company | Sleeve system and method of using |
| DE102012216562C5 (en) * | 2012-03-30 | 2018-12-06 | Doyma Gmbh & Co. | Fire protection system at transition to plastic pipe, and use of a fire protection device |
| CN109282260A (en) * | 2018-10-30 | 2019-01-29 | 江苏中圣压力容器装备制造有限公司 | A kind of waste heat of coke oven crude gas recyclable device and system |
| WO2020167127A1 (en) | 2019-02-15 | 2020-08-20 | J. Van Walraven Holding B.V. | Firestop device including an expandable fold-out collar |
| WO2021080484A1 (en) * | 2019-10-24 | 2021-04-29 | Roxtec Ab | Fire protection seal and method of mounting a fire protection seal |
| US11628321B2 (en) | 2015-04-27 | 2023-04-18 | Hilti Aktiengesellschaft | Firestop collar |
| US11655919B2 (en) | 2015-04-27 | 2023-05-23 | Hilti Aktiengesellschaft | Fire protection sleeve |
| US12104737B2 (en) | 2016-10-05 | 2024-10-01 | Hilti Aktiengesellschaft | Line feed-through for feeding a line through a building component |
| US12123534B2 (en) | 2015-04-27 | 2024-10-22 | Hilti Aktiengesellschaft | Fire protection sleeve |
-
1981
- 1981-12-14 GB GB08137638A patent/GB2111624A/en not_active Withdrawn
Cited By (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0226190A1 (en) * | 1985-12-13 | 1987-06-24 | E. Missel GmbH & Co. | Sealing device |
| GB2212187B (en) * | 1987-11-12 | 1991-11-27 | Furukawa Electric Co Ltd | Fire/smoke protection structure for a plastic pipe or cable channel portion in a floor or wall |
| GB2216220A (en) * | 1988-03-03 | 1989-10-04 | Mann Mcgowan Fabrications Ltd | Fire damper sleeves |
| GB2216220B (en) * | 1988-03-03 | 1992-11-11 | Mann Mcgowan Fabrications Ltd | Fire damper sleeves |
| WO1991004074A1 (en) * | 1989-09-14 | 1991-04-04 | Chemische Fabrik Grünau Gmbh | Pipe grommet |
| EP0570989A2 (en) * | 1989-09-14 | 1993-11-24 | Grünau Illertissen GmbH | Composition of intumescent material |
| EP0570989A3 (en) * | 1989-09-14 | 1994-08-03 | Gruenau Gmbh Chem Fab | |
| US5312137A (en) * | 1990-03-27 | 1994-05-17 | Ramco Manufacturing Company, Inc. | Safety shield |
| US5489124A (en) * | 1990-03-27 | 1996-02-06 | Ramco Manufacturing Company, Inc. | Safety shield |
| GB2252456A (en) * | 1990-12-11 | 1992-08-05 | Aaf Distribution Limited | Fire stop seals for pipes and cables |
| GB2252456B (en) * | 1990-12-11 | 1994-11-23 | Aaf Distribution Limited | Fire stop seals for plastic pipes |
| AU690721B2 (en) * | 1994-08-29 | 1998-04-30 | Promat Australia Pty Ltd | A fire sealing collar |
| US6725615B1 (en) | 1999-05-07 | 2004-04-27 | Promat Fyreguard Pty Ltd. | Service shut off device |
| AU766350B2 (en) * | 1999-05-07 | 2003-10-16 | Promat Australia Pty Ltd | Service shut off device |
| WO2000068608A1 (en) * | 1999-05-07 | 2000-11-16 | Promat Fyreguard Pty Ltd | Service shut off device |
| FR2877372A1 (en) * | 2004-10-28 | 2006-05-05 | Compart Sas Soc Par Actions Si | FIRE PROTECTION DEVICE |
| FR2943115A1 (en) * | 2009-03-10 | 2010-09-17 | Poujoulat | EQUIPMENT FOR FILLING THE PERFORMANCE OF AN ORIFICE MADE IN A WALL FOR PERMITTING THE PASSAGE OF A CONDUIT |
| EP2236897A3 (en) * | 2009-03-10 | 2011-07-27 | Poujoulat | Equipment for isolating the perimeter of a pipe section |
| EP2467914A2 (en) * | 2009-08-21 | 2012-06-27 | 3M Innovative Properties Company | Sleeve system and method of using |
| EP2467914A4 (en) * | 2009-08-21 | 2014-06-18 | 3M Innovative Properties Co | Sleeve system and method of using |
| DE102012216562C5 (en) * | 2012-03-30 | 2018-12-06 | Doyma Gmbh & Co. | Fire protection system at transition to plastic pipe, and use of a fire protection device |
| US11628321B2 (en) | 2015-04-27 | 2023-04-18 | Hilti Aktiengesellschaft | Firestop collar |
| US11655919B2 (en) | 2015-04-27 | 2023-05-23 | Hilti Aktiengesellschaft | Fire protection sleeve |
| US12083366B2 (en) | 2015-04-27 | 2024-09-10 | Hilti Aktiengesellschaft | Firestop collar |
| US12123534B2 (en) | 2015-04-27 | 2024-10-22 | Hilti Aktiengesellschaft | Fire protection sleeve |
| US12104737B2 (en) | 2016-10-05 | 2024-10-01 | Hilti Aktiengesellschaft | Line feed-through for feeding a line through a building component |
| CN109282260A (en) * | 2018-10-30 | 2019-01-29 | 江苏中圣压力容器装备制造有限公司 | A kind of waste heat of coke oven crude gas recyclable device and system |
| CN109282260B (en) * | 2018-10-30 | 2023-12-08 | 江苏中圣压力容器装备制造有限公司 | Raw coke oven gas waste heat recovery device and system |
| WO2020167127A1 (en) | 2019-02-15 | 2020-08-20 | J. Van Walraven Holding B.V. | Firestop device including an expandable fold-out collar |
| NL2022587B1 (en) | 2019-02-15 | 2020-08-28 | Walraven Holding Bv J Van | Firestop device including an expandable fold-out collar |
| WO2021080484A1 (en) * | 2019-10-24 | 2021-04-29 | Roxtec Ab | Fire protection seal and method of mounting a fire protection seal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |