DE2551693A1 - Fireproof conduit passage coating - has outer asbestos cement layer and single or multiple mineral wool inner layers - Google Patents

Abstract

The fire proof covering for conduit passages through ceilings and walls has an outer layer (4) of asbestos cement mixture and an inner layer (5) made of mineral wool. Both layers are in direct contact with each other, the inner acting as support. The covering can comprise several inner layers (5) of mineral wool in a counterposed supporting arrangement. A further format can comprise an outer layer (4) on both sides of asbestos cement and an inner layer (5) of mineral wool supporting one of the outer layers. In this case the space between such layers is filled with glass fibre (6).

Description

Foreclosure for bushings

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ The invention relates to a fire-proof Isolation of line penetrations in ceilings, walls or the like from different Materials.

There are bushings for lines, especially supply lines, for cables or the like in ceilings, walls or walls of buildings and the like Known structures that are sealed by bulkheads. Foreclosures after the state of the art in the simplest version consist in many cases of plastic Masses with or without self-hardening that lead to the formation of the foreclosure in the implementation be introduced from single or multi-layer panels one mostly relatively easily machinable material or combinations of the both specified means. Depending on the purpose of the foreclosure, the outer surface sufficiently resistant to mechanical effects, to chemical attacks or against extreme temperatures, so that cover materials from Wood, metal or another suitable material, for example plastic, for Application. The construction or assembly of the partition takes place nauxl of laying the lines (cables) in the implementation, so that each further Installation and / or removal of lines after they have been laid for the first time will destroy the seal has the consequence. The establishment of the foreclosure presents particular difficulties in the case of penetrations in ceilings and walls of thermally insulated rooms in which one Fire hazard must be taken into account through fire-proof training. In particular, power plant constructions pose such difficult requirements Frequent changes to the line arrangements in such structures make additional demands to the formation of the seals used for the penetrations.

It is the object of the invention to provide a substantially fire-proof To create partitioning for bushings with high demands on their heat insulating properties the replacement or installation and removal of in the implementation arranged Lines allowed without being destroyed.

To solve this problem, the invention provides that the Foreclosure an outer layer made of a knot cement mixture and one that supports it has an inner layer of pineral wool.

Is used in a particularly advantageous manner in this training the good insulating properties of mineral wool, for example mineral fiber wool, and the incombustibility of the knot cement mixture as well as its for the surface formation solid consistency, whereby the fragility of the knot cement mixture is caused by the The elasticity of the mineral wool is compensated against which the Astbestzementlösung is against supports. It should be noted the advantage that both the branch cement mixture and the mineral wool is easy to work with with simple tools. With a knife, For example, a sharp pocket knife can easily make holes in it the material of the foreclosure can be drilled if lines are subsequently inserted into the Implementation are to be withdrawn. It can be just as easy when removing - one or holes in the seal caused by loose or plucked cables , Mineral wool and a mixed knot cement mixture.

The properties of the materials used are known per se led to new effects in the training according to the invention, some of which only result from the aforementioned combination of materials.

Disadvantages of one material are caused by advantages of the other material almost ideally balanced.

The new foreclosure is therefore particularly suitable for use in Power plants are approved to meet the high demands made there.

The foreclosure according to the invention can be in the form of blanks of the individual layers made of different materials or as a composite of the layers be prefabricated as a so-called sandwich.

The blanks can then be reworked at the place of use with simple tools and without the use of workshop equipment to the size and adapt the form of implementation and then insert it into implementation. An installation with a slightly clamping pretension can be advantageous if on fasteners is waived. Another possibility is to build up the foreclosure on site the use of loose mineral wool and a later hardening knot cement mixture to see.

It is recommended that the foreclosure be trained in such a way that the outer layer is flush with the ceiling, wall or the like, Some the many conceivable design variants of the invention are now based on schematic graphic representations with reference to further advantages of the invention. They show: FIG. 1 a vertical section of a wall duct according to the invention, FIG. 2 shows a cross section through an open cable duct, FIG. 3 shows a plan view on the cable duct according to Figure 2 with a partition arranged in the cable duct and FIG. 4 some further exemplary embodiments in two, each at 90 degrees to one another offset cross-sections.

The implementation 1 in the wall 2, a ceiling, a wall or the like. for a cable 3, a line or several such cables and lines has the shape of a hole. The foreclosure in the training according to the invention is in this hole used. The bilateral formation of the foreclosure according to FIG. 1 has at each the two outer sides on a layer 4 of a Astbestzementlösung, whose Surface facing outwards should be flush with the surfaces of wall 2.

On the back of these outer layers 4 there is one on each side Layer 5 arranged from mineral wool so that adjacent surfaces of the im Ausfürungsbeispiel about the same thickness layers 4 and 5 touch and flat Both layers together carry this advantageously in the middle of the Execution of lying cables, a cable bundle or the like.

This centric arrangement is, however, not a condition for realization the invention. On the back G the layers 5 made of mineral wool can be made of the same or from further mutually supporting layers another material with a similar egg may be provided to the shafts, if necessary to increase the insulating effect. The arrangement of filler material is also suitable 6, which may also have a protective effect against radiation, for example radioactive rays, can cause.

If only insulation purposes are to be fulfilled, stuffed glass fiber mats can be used are preferred. Will the insulating effect only in a proportionate way If the requirement is small, the partition on only one side of the wall 2 is sufficient, whereby the choice of side is determined by different conditions at the place of use will. Analogous to this, the partitioning in the ceiling is also arranged on both sides or on one side either on the top or on the bottom possible.

A multi-layered formation of the foreclosure is in further different and variants to be viewed only as an example are shown in FIG.

The drawn offset by 90 degrees to each other Cross-sections recognize that the implementation do not have the shape of a round hole must, but can also take on other cross-sectional shapes.

Bushings 1 are shown in this figure one Wall 2 or ceiling with a single or multiple step-shaped training. Further it is shown that the wall surfaces of the implementation are wholly or partially conical With such an arrangement, the partitioning against the ring shoulder 7 of the step and possibly against the inclined wall surfaces of the implementation be supported.

Both options can also be used separately.

Combination with other design elements is also possible.

The upper representation in FIG. 4 shows layers 4 of the knot cement mixture at the top and at the bottom, with the space completely covered with layers 5 is filled with mineral wool. However, the layers 5 are different from that Figure 1 arranged in a pot 8 made of a structural steel fabric with a pot rim is suspended on the shoulder 7 so that the foreclosure is in a certain way viable and can be loaded from above.

In the arrangement underneath, the bushing is in the conical part a prefabricated foreclosure also with a pot 8 made of a structural steel mesh or a comparable material is used. You can optionally in Buy that inaccuracies no flush conclusion to the The underside of the ceiling, for example, which can be dispensed with, in particular, when this underside is disguised.

Then an education is shown next, in which two Layers 4 and 5 roll on a structural steel mesh 9, which is on the edge of the shoulder 7 is worn.

Finally, at the very bottom of FIG. 4, there is a prefabricated partition shown from several layers 4 and 5, in which a reinforcement 10 is incorporated is, so that higher load capacities of the foreclosure with relatively low Effort can be achieved.

In Figures 2 and 3, the application of the invention is in the foreclosure an open cable trench 12, which, for example, in a floor 11 or - offset by 180 degrees - arranged in a ceiling, in a wall or the like is. With this arrangement there are 4 from the asbestos segregation between the outer layers and these supporting layers 5 made of mineral wool from additional deposits Expanded metal 13 is provided, which by means of double-sided formation of the foreclosure Wire clips 14 or connected to one another by other suitable means, so that an extremely stable design is achieved will that too can be transferred to bulkheads for wall or ceiling penetrations.

It is clear from the exemplary embodiments that the concept of the invention through many other training variants not shown in the drawing can be realized.

L e r s e i t e

Claims (11)

Claims W Fire-proof sealing of cable bushings in ceilings, walls or the like made of different materials, characterized in that that she is a. outer layer (4). from a knot cement mixture and one of these has supporting inner layer (5) made of mineral wool, which are in direct contact. 2. Shading according to claim 1, characterized in that several Layers (5) made of mineral wool are provided in a mutually supporting arrangement are. 3. partitioning according to claims 1 and 2, characterized in that that they have on both sides an outer layer (4) made of a branch cement mixture with a this supporting inner layer (5) made of mineral wool has 0 4. Foreclosure according to claims 1 to 3, characterized in that the interior between the layers (5) of mineral wool have a coaming material (6). 5. partitioning according to claim 4, characterized in that the filler material made of stuffed fiberglass mats. (6) exists. 6. partitioning according to one or more of claims 1 to 5, characterized characterized in that the layer (4) or the layers of a knot cement mixture are arranged on an expanded metal layer (13). 7. partitioning according to one or more of claims 1 to 6, characterized characterized in that the expanded metal layers (13) of the layers (4) are made from the branch cement mixture a partition provided on both sides in the ceiling, wall or the like? are connected to one another by means of wire clips (14). 8. foreclosure according to one or more of claims 1 to 7, characterized marked that they are designed as an open cable trench (12) Durchfuhrng is arranged. 9. partitioning according to one or more of claims 1 to 8, characterized characterized in that they have a stepped cross-section is arranged and supported against the step shoulder. 10. partitioning according to one or more of claims 1 to 9, characterized characterized in that they are in a implementation with wholly or partially tapered Walls arranged and supported against the inclined ~ #andungsflächen. 11. partitioning according to one or more of claims 1 to 10, characterized characterized in that between adjacent layers of ineialwolle a stiffening fabric (9) (structural steel mesh) is provided.