WO1991019127A2 - Dispositif servant a sceller un tuyau en plastique traversant une cloison - Google Patents

Dispositif servant a sceller un tuyau en plastique traversant une cloison Download PDF

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Publication number
WO1991019127A2
WO1991019127A2 PCT/US1991/003844 US9103844W WO9119127A2 WO 1991019127 A2 WO1991019127 A2 WO 1991019127A2 US 9103844 W US9103844 W US 9103844W WO 9119127 A2 WO9119127 A2 WO 9119127A2
Authority
WO
WIPO (PCT)
Prior art keywords
plastic pipe
fire
collar
spring
sealing
Prior art date
Application number
PCT/US1991/003844
Other languages
English (en)
Other versions
WO1991019127A3 (fr
Inventor
Juergen Goebell
Koos Luitwieler
Marvin H. Christmann
Original Assignee
Minnesota Mining And Manufacturing Company
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 Minnesota Mining And Manufacturing Company filed Critical Minnesota Mining And Manufacturing Company
Priority to AU84161/91A priority Critical patent/AU651132B2/en
Priority to BR919106522A priority patent/BR9106522A/pt
Priority to JP91513690A priority patent/JPH05506494A/ja
Publication of WO1991019127A2 publication Critical patent/WO1991019127A2/fr
Publication of WO1991019127A3 publication Critical patent/WO1991019127A3/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/065—Physical fire-barriers having as the main closure device materials, whose characteristics undergo an irreversible change under high temperatures, e.g. intumescent
    • 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

Definitions

  • This invention pertains to a device for sealing a plastic pipe extending through an opening in a partition in the event of a fire.
  • Plastic pipes are progressively being used in lieu of metallic pipes.
  • Plastic pipes unlike metallic pipes, pose fire containment problems.
  • the plastic pipes will melt or burn leaving openings in the partitions (e.g. walls, ceilings, floors) which permit expansion of the fire.
  • Devices have been made to combat this kind of fire expansion.
  • a plastic pipe sealing device having a collar that includes a radially outwardly extending fastening portion at one end for attaching the device to a wall or a ceiling.
  • the device also has a tubular portion extending away from the wall OL the ceiling adapted to accommodate a lining of intumescent material.
  • An annular portion of the collar extends radially between the plastic pipe and the tubular portion retaining the lining of intumescent material within the collar.
  • the intumescent material expands to fill the opening through which the collapsed or burned plastic pipe passed.
  • a fire-resistant barrier is thereby formed which prevents an expansion of fire and passage of smoke from one room to another.
  • the front annular portion of the collar prevents the intumescent material from being axially expanded beyond the collar.
  • plastic pipes of ⁇ p to medium diameters e.g. on the order of about 30 to 100 mm
  • the device disclosed in German Utility Model 89 07,017 works satisfactorily. If the pipe diameter is relatively large (e.g. greater than about 100 mm), however, the intumescent material cannot sufficiently seal the pipe in a timely manner because the intumescent material typically needs a few minutes to chemically convert and expand. Within this time, flames, gases, and smoke may pass through the opening.
  • Japanese Utility Model Laid Open Application 64-57479 published April 10, 1989 illustrates a device for sealing a plastic pipe in the event of a fire.
  • the device has two springs, one on each side of a wall through which the pipe passes.
  • the springs encircle the pipe under tension to close the pipe when the pipe becomes soft from heat generated in a fire.
  • U.S. Patent 4,559,745 to Wexler discloses a device for "shutting-off" plastic pipes in the event of a fire.
  • the device includes a collar having an intumescent material packed therein, a refractory fabric, and a tension spring.
  • the collar and intumescent material are embedded in a wall or floor of a building.
  • the refractory fabric encircles the outside of the plastic pipe inside and outside of the wall or floor.
  • the tension spring is located outside of the wall and is placed circumferentially around the refractory fabric and plastic pipe .
  • the device of U.S. Patent 4,559,745 has at least two deficiencies. Firstly, the tension spring is located in a position that hinders activation of the intumescent material. When the tension spring constricts about the pipe, hot gasses are restricted from passing through the pipe to the intumescent material. The intumescent material therefore would not be activated as quickly. Secondly, the spring is not protected from being damaged by heat from a fire. Heat from a fire can damage the tensile properties of the spring, injuring the spring's ability to constrict and seal the plastic pipe.
  • WO 87/00761 published February 12, 1987 discloses a composite fire stop device having two tension springs, each located on opposite sides of an opening of an annulus of intumescent material.
  • a sheath of refractory fabric is located between the outer surface of the pipe and the intumescent material. Fingers of the refractory fabric are placed around the tension springs to hold the springs to a support sleeve.
  • the device disclosed in this patent possesses the same problems discussed above for U.S. Patent 4,559,745: (i) the springs and intumescent material are not positioned in the.
  • This new plastic pipe sealing device has a collar with an opening for a plastic pipe to pass therethrough.
  • the collar contains a first and second means for sealing the plastic pipe.
  • the first sealing means seals the plastic pipe when heat from the fire causes that pipe to become soft. This occurs before the second sealing means acts to seal the plastic pipe.
  • the second sealing means acts to seal the plastic pipe after being exposed to a sufficient amount of heat.
  • the first and second sealing means are arranged in the collar so that when the device is mounted in or on a partition the first sealing means is located closer to the center of the partition than at least a portion of the second sealing means.
  • a preferred first sealing means of the invention includes a radially compressive means such as a helical spring.
  • the radially compressive means can be protected from heat damage by being completely enclosed in a means for protecting the radially compressive means.
  • a protecting means can include a layer of a fire-resistant, deformable, heat-insulating material. This kind of material protects the tensile properties of the radially compressive means from damage caused by heat, and it also assists in sealing the plastic pipe.
  • an object of the invention is to provide a device for sealing a plastic pipe in the event of a fire, which can seal the plastic pipe without restricting the flow of heat to a heat-activatable sealing means such as an intumescent material.
  • Another object of the present invention is to provide a device for sealing a plastic pipe which insulates a radially compressive means such as a spring from heat generated by a fire so as to preserve the spring's function.
  • plastic pipe means any conduit composed of a substance( ⁇ ) that permits the conduit to soften or melt after being exposed to heat from a fire.
  • FIG. 1 is a perspective view of a device for sealing a plastic pipe in the event of a fire in accordance with the present invention.
  • FIG. 2 is a partial cross-sectional view taken along lines 2-2 of FIG. 1 illustrating a device for sealing a plastic pipe in the event of a fire in accordance with the present invention.
  • FIG. 3 is a perspective view of a helical spring for use in the devices depicted in FIGs. 1, 2, 4, and 5.
  • FIG. 4 is a partial cross-sectional view of a further embodiment of the present invention illustrating a radially compressive means inside a collar adjacent to a partition.
  • FIG. 5 is a cross-sectional view of a further embodiment of the present invention illustrating a radially compressive means located centrally in a collar.
  • a collar 12 is illustrated that contains a first and second means 13 and 15, respectively, for sealing a plastic pipe 22.
  • First pipe sealing means 13 can include a radially compressive means such as the spring identified by the numeral 34.
  • Spring 34 is shown encircling plastic pipe 22 under tension adjacent collar 12. In a fire, tension from spring 34 causes a progressive strangling of plastic pipe 22 as the pipe softens and becomes ductile from heat generated by the fire.
  • Tension spring 34 is shown to be contained within an enclosure 30 that will contract in conjunction with spring 34 to seal pipe 22 in the event of a fire.
  • Enclosure 30 is comprised of a fire-resistant, deformable, heat-insulating sheet material that insulates spring 34 from heat so that it can maintain its function for a longer duration while being exposed to high temperatures generated in a fire. This kind of protection is maintained at least until the commencement of the effect of the second sealing means 15.
  • Second sealing means 15 can include a heat-activatable intumescent material identified by numeral 26.
  • Tension spring 34 can be attached to an inner side of enclosure 30 by suitable fastening means, for example, by sewing.
  • a layer of the fire-resistant, deformable, heat-insulating material is folded at 32 with the spring being located in the looped end between superimposed layers.
  • enclosure 30 contemporaneously closes therewith to assist in sealing the plastic pipe to prevent passage of flames, smoke, gases, and the like.
  • two layers of folded material 30 extend into collar 12 radially inward of intumescent material 26.
  • Enclosure 30 can be made of a flat blank of sheet material that is wrapped around plastic pipe 22.
  • the flat blank of sheet material has a first portion that is located radially inward of an opening of an annulus of intumescent material 26, a second portion that is folded at 32 about spring 34, and a third portion that is located radially inward of an opening of an annulus of intumescent material 26.
  • enclosure 30 can be a double-layered hose. In this event, enclosure 30 will be slid over plastic pipe 22 prior to its assembly. It is preferred that the layer of fire-resistant, deformable, heating insulating material be wrapped around the plastic pipe for a distance of at least one half the diameter of the plastic pipe.
  • Enclosure 30 preferably consists essentially of a deformable textile fabric that is fire-resistant and heat-insulating, preferably made from high temperature resistant inorganic filaments such as ceramic filaments, for example, alumina-silica-boria fibers.
  • alumina-silica-boria fibers Two examples are indicated as follows:
  • Fabrics made from these filaments are available from 3M under the trademarks NEXTEL 312 and NEXTEL 440.
  • the fabric of enclosure 30 preferably . is relatively smooth so that no parts or filaments of the enclosure extend between the turns of spring 34, which could prevent the spring from being completely contracted.
  • the fabric preferably has a relatively small mesh to restrict flames, gases, smoke, and contaminates from passing therethrough.
  • a typical plastic pipe will soften when it reaches a temperature of about 80 to 140 °C.
  • spring 34 under tension contracts and takes along the associated part of enclosure 30, forming a barrier that prevents penetration of flames, smoke, gases, and other corrosive, aggressive or toxic gases.
  • Enclosure 30 protects spring 34 so that it will not be rendered useless by the influence of heat.
  • the above-mentioned examples of fabric for the enclosure may resist temperatures of up to 1200 °C to effectively protect the spring for at least about 15 to 20 minutes.
  • the device works with smoldering fires and high intensive fires, for example, fires with oil, gas, solvents, etc.
  • Enclosure 30 together with spring 34 thereby forms a temporary sealing of the opening duct until the intumescent material 26 has had sufficient time to react and to expand.
  • a nonwoven material made of inorganic fibers could also be used as an enclosure 30.
  • the nonwoven material should be selected to provide properties similar to the above-mentioned fabric.
  • the spring preferably is helical and preferably is made of stainless steel.
  • the spring can be designed and dimensioned such that a ductile plastic pipe is compressed to a fraction of its diameter.
  • spring 34 has a hook 36 at at least one end to retain the spring in an annular shape.
  • Spring 34 is wound around plastic pipe 22 under tension.
  • two layers of enclosure 30 may be wrapped about plastic pipe 22 radially inward of intumescent material 26 extending through opening 24 in partition 30. Enclosure 30 may extend beyond collar 12 to a greater or lesser extent, but preferably extends at least partially within an opening of an annulus of the intumescent material 26.
  • collar 12 can have a means for fastening the device to a partition such as a wall.
  • a means can be a radially fastening portion or flange 14 which can be attached to wall 10 by using means such as screwbolt ⁇ 16.
  • Collar 12 also comprises a tubular portion 18 extending from the inner end of radial flange 14 away from wall 10.
  • An annular radially inwardly facing portion 20 is shown at the end of tubular portion 18, portion 20 extending proximately adjacent to the outer side of plastic pipe 22.
  • Plastic pipe 22 extends through tubular portion 18 of collar 12 and an opening 24 of wall 10.
  • Collar 12 can resemble, for example, the collar of the German Utility Model Application 89 07 017 in regard to structure.
  • Collar 12 can be formed, for example, from two heat-resistant metallic semi-cups. A plurality of layers of an intumescent material
  • intumescent material 26 can be positioned in tubular portion 18.
  • the intumescent material greatly expands in volume upon exposure to heat in the event of a fire.
  • Intumescent fire protection material is commercially available as a deformable preproduct in the form of tapes, plates, strips or the like. In most cases, a resilient plastic material is used which expels steam during the intumescing process.
  • a material distributed by 3M under the designation FS 195 AA is suitable. Intumescent materials are disclosed in U.S. Patents 4,234,639 and 4,273,879.
  • first and second means 13 and 15 for sealing plastic pipe 22 are contained in collar 12.
  • First means 13 (such as a spring 34 and a layer of fire- resistant, deformable, heat-insulating material) is arranged in collar 12 so that when the device is mounted to partition 10, the first sealing means 13 is located closer to the center of partition 10 than the second sealing means 15.
  • plastic pipe 22 Upon closure of the first sealing means 13, plastic pipe 22 will still have a portion 17 open providing communication between the heat source and the second sealing means 15 (such as an intumescent material 26).
  • Spring 34 is located in a portion of collar 12 that is adjacent to partition 10 when the device is mounted.
  • the intumescent material 26 is located further away from partition 10, closer to annular end face portion 20.
  • the plastic pipe 22 therefore can be sealed by the spring 34 without restricting the flow of heat from a fire to intumescent material 26, thereby providing for an earlier closure of the plastic pipe 22 by the intumescent material.
  • FIG. 5 a further preferred embodiment of the invention is shown.
  • spring 34 is located centrally in collar 12'.
  • Collar 12' has a tubular portion 18' and annular radially inwardly facing portions 20'.
  • Intumescent material is located in collar 12' on opposite sides of spring 34 as indicated by numerals 25 and 27.
  • This embodiment is particularly suitable for placement within a partition 10.
  • this embodiment also allows plastic pipe 22 to be sealed by spring 34 without obstructing heat flow to the intumescent material 26.
  • This embodiment of the device possesses this advantage for fires originating on both sides of a partition 10.
  • the fire-resistant, deformable, heat-insulating material can protect spring 34 by, for example, placing one layer 29 of such material radially inward of first and second portions of intumescent material 25 and 27, respectively, and radially inward of spring 34.
  • a second layer 31 of fire-resistant, deformable, heat-insulating material can be placed radially inward of first and second portions of intumescent material 25 and 27 and radially outward of spring 34 to completely surround spring 34.
  • the layers can be joined at the spring 34, for example, by sewing the layers together.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Insulation (AREA)
  • Building Environments (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

L'invention se rapporte à un dispositif qui sert à sceller un tuyau en plastique (22) pour le protéger en cas d'incendie et qui comprend à cet effet, de préférence, un manchon (12) contenant un ressort (34) et une matière intumescente (26). Le ressort (34) et la matière intumescente (26) sont disposés dans le manchon (12) de sorte que, après fermeture du tuyau en plastique (22) par le ressort (34), une partie (17) du tuyau (22) reste ouverte pour communiquer avec le feu ou la source de chaleur. La partie ouverte (17) permet à la chaleur d'atteindre plus rapidement la matière intumescente (26) afin de produire sa dilatation. Le ressort (34) est protégé de la source de chaleur jusqu'à la dilatation de la matière intumescente (26) par une enveloppe (30) en matière thermo-isolante, déformable et ignifuge.
PCT/US1991/003844 1990-06-01 1991-05-31 Dispositif servant a sceller un tuyau en plastique traversant une cloison WO1991019127A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU84161/91A AU651132B2 (en) 1990-06-01 1991-05-31 Device for sealing a plastic pipe extending through a partition
BR919106522A BR9106522A (pt) 1990-06-01 1991-05-31 Dispositivo para obturar um tubo de plastico
JP91513690A JPH05506494A (ja) 1990-06-01 1991-05-31 仕切りを貫通するプラスチックパイプを密封するための装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4017656.8 1990-06-01
DE4017656A DE4017656A1 (de) 1990-06-01 1990-06-01 Vorrichtung zur abschottung eines durch eine wand hindurchgefuehrten kunststoffrohrs im brandfall

Publications (2)

Publication Number Publication Date
WO1991019127A2 true WO1991019127A2 (fr) 1991-12-12
WO1991019127A3 WO1991019127A3 (fr) 1992-01-09

Family

ID=6407608

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1991/003844 WO1991019127A2 (fr) 1990-06-01 1991-05-31 Dispositif servant a sceller un tuyau en plastique traversant une cloison

Country Status (8)

Country Link
EP (1) EP0536331A1 (fr)
JP (1) JPH05506494A (fr)
AU (2) AU651132B2 (fr)
BR (1) BR9106522A (fr)
CA (1) CA2082828A1 (fr)
DE (1) DE4017656A1 (fr)
WO (1) WO1991019127A2 (fr)
ZA (1) ZA914047B (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2341797A (en) * 1998-09-23 2000-03-29 Reddiplex Group Plc Intumescent pipe collar
AU718072B2 (en) * 1995-12-18 2000-04-06 Promat Australia Pty Ltd Improvements in fire collars
WO2004072530A1 (fr) * 2003-02-11 2004-08-26 Truss Holdings Pty. Ltd. Collier coupe feu
EP2527137A1 (fr) * 2011-05-26 2012-11-28 Bohle Brandschutz GmbH Cloisonnement pare-fumées
EP2749323A1 (fr) * 2012-12-27 2014-07-02 Tommy Pedersén Agencement d'un joint résistant au feu pour un passage tubulaire
EP2980465A1 (fr) * 2014-07-28 2016-02-03 Profiltra B.V. Compensateur et procédé pour son utilisation
US10100930B2 (en) 2014-04-28 2018-10-16 Hatch Ltd. Sleeve seal for electric furnace electrodes
CN113438963A (zh) * 2019-02-15 2021-09-24 J·范瓦尔拉芬私人控股有限公司 包括可扩展的折叠式套环的阻火装置
US11231129B2 (en) * 2018-03-21 2022-01-25 Hilti Aktiengesellschaft Fire protection device and fire protection assembly
EP4188557A4 (fr) * 2020-07-30 2024-05-29 Specified Technologies Inc. Collier coupe-feu destiné à fournir une exposition post-incendie assurant l'étanchéité à l'eau et au gaz

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU657309B2 (en) * 1991-03-06 1995-03-09 Chubb Security Australia Pty Limited Pipe collapsing means
DE4343061A1 (de) * 1993-12-16 1995-06-22 Missel Gmbh & Co E Brandabschottungssystem
AT411617B (de) * 2000-10-02 2004-03-25 Kamleithner Maly Uta Ing Mag Brandschutz-manschette
US6574930B2 (en) * 2001-01-23 2003-06-10 Flame Seal Products, Inc. Passive film protection system for walls
DK3346563T3 (da) * 2017-01-05 2020-05-11 Roxtec Ab Gennemføring med røg- og brandbeskyttelse

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH636667A5 (en) * 1978-12-28 1983-06-15 Geberit Ag Fire-extinguishing passage through walls or floors for flammable pipelines and cables
DE8910996U1 (de) * 1989-09-14 1989-10-26 Chemische Fabrik Grünau GmbH, 7918 Illertissen Rohrschott

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU575098B2 (en) * 1984-01-19 1988-07-21 Fire Research Pty. Limited Fire stopping of plastics pipe
AU579880B2 (en) * 1985-08-06 1988-12-15 Fire Research Pty. Limited Devices for the fire stopping of plastics pipes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH636667A5 (en) * 1978-12-28 1983-06-15 Geberit Ag Fire-extinguishing passage through walls or floors for flammable pipelines and cables
DE8910996U1 (de) * 1989-09-14 1989-10-26 Chemische Fabrik Grünau GmbH, 7918 Illertissen Rohrschott

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU718072B2 (en) * 1995-12-18 2000-04-06 Promat Australia Pty Ltd Improvements in fire collars
GB2341797A (en) * 1998-09-23 2000-03-29 Reddiplex Group Plc Intumescent pipe collar
GB2341797B (en) * 1998-09-23 2002-02-27 Reddiplex Group Plc Intumescent pipe collar
WO2004072530A1 (fr) * 2003-02-11 2004-08-26 Truss Holdings Pty. Ltd. Collier coupe feu
CN100445622C (zh) * 2003-02-11 2008-12-24 特拉斯控股私人有限公司 防火圈
US7676991B2 (en) * 2003-02-11 2010-03-16 Ig6 Pty Ltd Fire collar
EP2527137A1 (fr) * 2011-05-26 2012-11-28 Bohle Brandschutz GmbH Cloisonnement pare-fumées
EP2749323A1 (fr) * 2012-12-27 2014-07-02 Tommy Pedersén Agencement d'un joint résistant au feu pour un passage tubulaire
US10100930B2 (en) 2014-04-28 2018-10-16 Hatch Ltd. Sleeve seal for electric furnace electrodes
EP2980465A1 (fr) * 2014-07-28 2016-02-03 Profiltra B.V. Compensateur et procédé pour son utilisation
US11231129B2 (en) * 2018-03-21 2022-01-25 Hilti Aktiengesellschaft Fire protection device and fire protection assembly
CN113438963A (zh) * 2019-02-15 2021-09-24 J·范瓦尔拉芬私人控股有限公司 包括可扩展的折叠式套环的阻火装置
CN113438963B (zh) * 2019-02-15 2023-01-17 J·范瓦尔拉芬私人控股有限公司 包括可扩展的折叠式套环的阻火装置
US11992714B2 (en) 2019-02-15 2024-05-28 J. Van Walraven Holding B.V. Firestop device including an expandable fold-out collar
EP4188557A4 (fr) * 2020-07-30 2024-05-29 Specified Technologies Inc. Collier coupe-feu destiné à fournir une exposition post-incendie assurant l'étanchéité à l'eau et au gaz

Also Published As

Publication number Publication date
CA2082828A1 (fr) 1991-12-02
AU8416191A (en) 1991-12-31
DE4017656A1 (de) 1991-12-05
EP0536331A1 (fr) 1993-04-14
WO1991019127A3 (fr) 1992-01-09
AU6310294A (en) 1994-07-21
ZA914047B (en) 1992-04-29
BR9106522A (pt) 1993-05-25
JPH05506494A (ja) 1993-09-22
AU651132B2 (en) 1994-07-14

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