WO1993004516A1 - A device in a lead-through for cables or conduits - Google Patents

A device in a lead-through for cables or conduits Download PDF

Info

Publication number
WO1993004516A1
WO1993004516A1 PCT/SE1992/000583 SE9200583W WO9304516A1 WO 1993004516 A1 WO1993004516 A1 WO 1993004516A1 SE 9200583 W SE9200583 W SE 9200583W WO 9304516 A1 WO9304516 A1 WO 9304516A1
Authority
WO
WIPO (PCT)
Prior art keywords
lead
cable
jacket
wire
packing
Prior art date
Application number
PCT/SE1992/000583
Other languages
French (fr)
Inventor
Erik Lindborg
Original Assignee
Lycab 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 Lycab Ab filed Critical Lycab Ab
Publication of WO1993004516A1 publication Critical patent/WO1993004516A1/en

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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/22—Installations of cables or lines through walls, floors or ceilings, e.g. into buildings

Definitions

  • the present invention relates to an arrangement in a lead-through device for cables and wires through a wall or the like in accordance with the preamble of Claim 1.
  • Lead-through devices of this type are used in various contexts to provide fire protection in an opening- through which cables or wires pass.
  • the packing pieces are usually made of fire protecting materials, which, in the event of a fire, expand and fill out the empty space which otherwise would arise if insulation and the like on cables or wires melts or is burned up. In this manner, it is possible to achieve a lead-through device which pre ⁇ vents a fire from spreading from one side of the lead- through device to the other.
  • the invention is intended to provide an arrangement in a lead-through device of the type described by way of introduction which improves the fire protecting pro- perties of the lead-through device and at the same time is simple and inexpensive to manufacture and install, even where there is an existing lead-through device. This is achieved according to the invention by means of an arrangement having the characteristics disclosed in the characterizing clause of Claim 1.
  • Fig. 1 is a front view of a lead-through device having an arrangement according to one embodiment of the invention
  • Fig. 2 shows a section along the line II-II in Fig. 1.
  • the drawing shows a lead- hrough device comprising a frame 1, designed to be mounted in an opening in a wall or the like.
  • the inner space of the frame 1 is rectang ⁇ ular and is filled with a plurality of rows of packing pieces 2, 3.
  • Each of the packing pieces 2 is provided with a through-channel, through which a cable 4 or other type of conductor extends.
  • the packing pieces 3 are, in contrast, not made with a channel, but are essentially homogeneous and are used to fill out the rest of the space in the frame 1.
  • These pressing means are, however, no part of the invention and are therefore not shown in the drawing.
  • Each of the packing pieces 2 is made in two halves, so that they can be easily mounted about the cables 4 even if no free end thereof is available. It is also evident from the drawing that the packing pieces 2 and 3 are made in a module system and that the packing pieces 2 have channels dimensioned so that they fit tightly about the cables 4. In this manner, it is possible to fill the frame 1 with packing pieces of the size required depend ⁇ ing on the size and number of the cables or wires which are to pass through the frame 1.
  • the packing pieces 2 and 3 are made of a fire protecting material which, in the event of a fire on one side of the lead-through device, will prevent the fire from spreading through the lead-through device to the other side.
  • the material in the packing pieces 2, 3 is usually such that, under the effect of a fire, it is transformed into a foam which increases in volume and thus fills up even the empty spaces which can arise when insulation or the like on the cables 4 melts or burns up. There is thus provided a lead-through device which prevents fire from spreading from one side to the other.
  • regula ⁇ tions may specify that in the event of a fire on one side of the lead-through device, the temperature increase on the opposite side after 90 minutes will not exceed 180°.
  • each cable 4, in conjunction with the packing piece 2 is provided with a jacket 5 of a fire protecting material, preferably of the same material as the packing pieces 2, 3 are made of.
  • the jacket 5 is connected to the packing piece 2 and extends outward therefrom to thereby form a continuation of the packing piece 2.
  • the jacket 5 con- sists of a helically wound strip.
  • the strip is manu ⁇ factured with the desired helical shape.
  • the material in the jacket 5, as disclosed above, is preferably the same material as in the packing pieces 2, 3. This material is elastically resilient. This means that the jacket 5 has a shape predetermined at manufacture, so that the jacket 5 in its free state has the shape of a cylinder, the windings of the strip lying contiguous to each other.
  • the jacket 5 is made of an elastically resilient material, it can be applied to the cable 4 in question by unwinding the strip forming the jacket 5 and then winding it about the cable 4.
  • the properties of the material in the jacket 5 are further ⁇ more such that jackets 5 of the same dimensions, i.e. made with the same predetermined free diameter, can be used for cables 4 with different outer dimensions. In this manner, jackets 5 with a few different sizes, can be used for cables 4 within a large range of diameters. This will make manufacturing and storage costs low, since only a few different sizes of jackets 5 need to be manu ⁇ factured and kept in supply.
  • the strip forming the jacket 5 has, in the embodiment shown, a rectangular cross-sectional shape, which means that the outside of the jacket 5, when the jacket 5 is mounted on a cable 4, has an essentially cylindrical shape.
  • the strip be made continuously and then be cut to a suitable length. This cutting provides at the same time essentially flat end surfaces perpendicular to the longitudinal direction of the jackets, so that each jacket 5 can lie tightly against the associated packing piece 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Cable Accessories (AREA)

Abstract

The invention relates to an arrangement in a lead-through device for cables or wires (4) through a wall or the like. The lead-through device comprises a frame (1) mounted in an opening in the wall. The frame is filled with one or more rows of packing pieces (2, 3). At least one (2) of the packing pieces is provided with a through-channel for a cable or wire (4). The cable or wire fits tightly in the channel. According to the invention, each cable or wire (4) is, on at least one side of the packing piece (2), surrounded by a jacket (5) of a fire protecting, resilient material. The jacket (5) has the shape of a helically wound strip with windings lying tightly against each other and which connects to the packing piece (2) to form a continuation thereof, the jacket tightly surrounding the cable or wire (4).

Description

A DEVICE IN A LEAD-THROUGH FOR CABLES OR CONDUITS.
The present invention relates to an arrangement in a lead-through device for cables and wires through a wall or the like in accordance with the preamble of Claim 1.
Lead-through devices of this type are used in various contexts to provide fire protection in an opening- through which cables or wires pass. The packing pieces are usually made of fire protecting materials, which, in the event of a fire, expand and fill out the empty space which otherwise would arise if insulation and the like on cables or wires melts or is burned up. In this manner, it is possible to achieve a lead-through device which pre¬ vents a fire from spreading from one side of the lead- through device to the other.
There are now more and more stringent requirements against the spreading of fire. This also involves the requirement that a fire on one side of a lead-through device during a certain predetermined period of time will not increase the temperature on the other side of the lead-through device beyond a predetermined level. Under certain conditions, the standardized lead-through devices of the type described by way of introduction must be improved as regards fire protection to fulfill the most stringent requirements.
The invention is intended to provide an arrangement in a lead-through device of the type described by way of introduction which improves the fire protecting pro- perties of the lead-through device and at the same time is simple and inexpensive to manufacture and install, even where there is an existing lead-through device. This is achieved according to the invention by means of an arrangement having the characteristics disclosed in the characterizing clause of Claim 1.
Advantageous embodiments of the invention are disclosed in the subclaims.
The invention will be described in more detail below with reference to the accompanying drawing, where: Fig. 1 is a front view of a lead-through device having an arrangement according to one embodiment of the invention; and Fig. 2 shows a section along the line II-II in Fig. 1.
The drawing shows a lead- hrough device comprising a frame 1, designed to be mounted in an opening in a wall or the like. The inner space of the frame 1 is rectang¬ ular and is filled with a plurality of rows of packing pieces 2, 3. Each of the packing pieces 2 is provided with a through-channel, through which a cable 4 or other type of conductor extends. The packing pieces 3 are, in contrast, not made with a channel, but are essentially homogeneous and are used to fill out the rest of the space in the frame 1. Usually, in the frame there is also means for pressing the packing pieces 2 and 3 together so that the packing pieces 2 tightly surround the cables 4 and are pressed against each other, so that a tight filler is provided in the entire frame 1. These pressing means are, however, no part of the invention and are therefore not shown in the drawing.
Each of the packing pieces 2 is made in two halves, so that they can be easily mounted about the cables 4 even if no free end thereof is available. It is also evident from the drawing that the packing pieces 2 and 3 are made in a module system and that the packing pieces 2 have channels dimensioned so that they fit tightly about the cables 4. In this manner, it is possible to fill the frame 1 with packing pieces of the size required depend¬ ing on the size and number of the cables or wires which are to pass through the frame 1.
The packing pieces 2 and 3 are made of a fire protecting material which, in the event of a fire on one side of the lead-through device, will prevent the fire from spreading through the lead-through device to the other side. The material in the packing pieces 2, 3 is usually such that, under the effect of a fire, it is transformed into a foam which increases in volume and thus fills up even the empty spaces which can arise when insulation or the like on the cables 4 melts or burns up. There is thus provided a lead-through device which prevents fire from spreading from one side to the other.
As stated above, further fire preventing effect is also presently required, meaning that the lead-through device must protect the cables in such a manner that the temperature on the side of the lead-through device facing away from the fire after a certain period of time will not exceed a predetermined value. For example, regula¬ tions may specify that in the event of a fire on one side of the lead-through device, the temperature increase on the opposite side after 90 minutes will not exceed 180°.
In order to more easily fulfill these stringent require¬ ments with the aid of a conventional lead-through device, each cable 4, in conjunction with the packing piece 2, is provided with a jacket 5 of a fire protecting material, preferably of the same material as the packing pieces 2, 3 are made of. The jacket 5 is connected to the packing piece 2 and extends outward therefrom to thereby form a continuation of the packing piece 2. The jacket 5 con- sists of a helically wound strip. The strip is manu¬ factured with the desired helical shape. The material in the jacket 5, as disclosed above, is preferably the same material as in the packing pieces 2, 3. This material is elastically resilient. This means that the jacket 5 has a shape predetermined at manufacture, so that the jacket 5 in its free state has the shape of a cylinder, the windings of the strip lying contiguous to each other.
By virtue of the fact that the jacket 5 is made of an elastically resilient material, it can be applied to the cable 4 in question by unwinding the strip forming the jacket 5 and then winding it about the cable 4. The properties of the material in the jacket 5 are further¬ more such that jackets 5 of the same dimensions, i.e. made with the same predetermined free diameter, can be used for cables 4 with different outer dimensions. In this manner, jackets 5 with a few different sizes, can be used for cables 4 within a large range of diameters. This will make manufacturing and storage costs low, since only a few different sizes of jackets 5 need to be manu¬ factured and kept in supply.
The strip forming the jacket 5 has, in the embodiment shown, a rectangular cross-sectional shape, which means that the outside of the jacket 5, when the jacket 5 is mounted on a cable 4, has an essentially cylindrical shape. When manufacturing a large number of jackets 5, it is suitable that the strip be made continuously and then be cut to a suitable length. This cutting provides at the same time essentially flat end surfaces perpendicular to the longitudinal direction of the jackets, so that each jacket 5 can lie tightly against the associated packing piece 2.

Claims

1. Arrangement in a lead-through device for cables or wires (4) or other conductors through a wall or the like, said lead-through device comprising a frame (1) mounted in an opening in the wall, said frame being filled with one or more rows of packing pieces (2, 3), at least one (2) of the packing pieces being provided with a through- channel for a cable or wire (4), in which channel the cable or wire fits tightly, c h a r a c t e r i z e d in that each cable or wire (4) on at least one side of the packing piece (2) is surrounded by a jacket (5) of a fire protecting, resilient material, said jacket (5) having the shape of a helically wound strip with windings lying tightly against each other, and connected to the packing piece (2) to form a continuation thereof, and to tightly surround the cable or wire (4) .
2. Arrangement according to Claim 1, c h a r a c t e r ¬ i z e d in that the helically wound strip is planed off at least at one end thereof to provide tight contact between the jacket (5) and the packing piece (2).
3. Arrangement according to one or Claims 1 or 2, c h a r a c t e r i z e d in that the helically wound strip has a rectangular cross-sectional shape.
PCT/SE1992/000583 1991-08-26 1992-08-25 A device in a lead-through for cables or conduits WO1993004516A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9102446-3 1991-08-26
SE9102446A SE469541B (en) 1991-08-26 1991-08-26 DEVICE FOR AN IMPLEMENTATION FOR CABLES OR WIRES

Publications (1)

Publication Number Publication Date
WO1993004516A1 true WO1993004516A1 (en) 1993-03-04

Family

ID=20383544

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1992/000583 WO1993004516A1 (en) 1991-08-26 1992-08-25 A device in a lead-through for cables or conduits

Country Status (3)

Country Link
AU (1) AU2516392A (en)
SE (1) SE469541B (en)
WO (1) WO1993004516A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999052191A1 (en) * 1998-04-02 1999-10-14 Decke & Licht Ag Wall duct for cables and lines
DE20107653U1 (en) 2001-05-05 2001-08-09 Walter Wichmann Brandschutzsysteme, 57439 Attendorn Device for the fire-proof partitioning of cables or the like.
WO2008069716A1 (en) * 2006-12-08 2008-06-12 Mct Brattberg Ab Insert block half, and a sealing system comprising said insert block half

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE414100B (en) * 1978-10-12 1980-07-07 Lyckeaborgs Bruk Ab Arrangement for increasing the fire resistance for a fire- protecting lead-through of cables in walls or the like
EP0146193A1 (en) * 1983-12-15 1985-06-26 Johannes Alfred Beele Installation for fire protection

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE414100B (en) * 1978-10-12 1980-07-07 Lyckeaborgs Bruk Ab Arrangement for increasing the fire resistance for a fire- protecting lead-through of cables in walls or the like
EP0146193A1 (en) * 1983-12-15 1985-06-26 Johannes Alfred Beele Installation for fire protection

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999052191A1 (en) * 1998-04-02 1999-10-14 Decke & Licht Ag Wall duct for cables and lines
DE20107653U1 (en) 2001-05-05 2001-08-09 Walter Wichmann Brandschutzsysteme, 57439 Attendorn Device for the fire-proof partitioning of cables or the like.
WO2008069716A1 (en) * 2006-12-08 2008-06-12 Mct Brattberg Ab Insert block half, and a sealing system comprising said insert block half

Also Published As

Publication number Publication date
AU2516392A (en) 1993-03-16
SE9102446D0 (en) 1991-08-26
SE9102446L (en) 1993-02-27
SE469541B (en) 1993-07-19

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