EP0200764A1

EP0200764A1 - Device for fixing to a support wall a fibre insulation element.

Info

Publication number: EP0200764A1
Application number: EP19850905517
Authority: EP
Inventors: Patrick Berthe
Original assignee: KERLANE
Current assignee: KERLANE
Priority date: 1984-11-06
Filing date: 1985-11-06
Publication date: 1986-11-12
Also published as: EP0200764B1; ES296289Y; WO1986002991A1; DE3565888D1; DK163684C; DK316886A; FR2572796A1; FR2572796B1; ES296289U; DK316886D0; DK163684B

Abstract

Dispositif de fixation sur une paroi-support d'un élément d'isolation formé de fibres comprenant une pièce métallique (1) formée d'une première partie (2, 3) capable de pénétrer dans le module (11) parallèlement à la paroi-support de préférence à la façon des dents d'une fourche, d'une seconde partie (8, 9, 10) qui peut coopérer avec un organe d'accrochage (vis, goujon etc ...) fixe sur la paroi-support, et d'une troisième partie (4 à 7) qui relie les deux premières et peut coopérer avec l'extrémité d'une pièce métallique analogue qui a traversé un élément adjacent.Fixing device on a support wall of an insulation element formed of fibers comprising a metal part (1) formed of a first part (2, 3) capable of penetrating into the module (11) parallel to the wall- support preferably in the manner of the teeth of a fork, of a second part (8, 9, 10) which can cooperate with a hooking member (screw, stud, etc.) fixed on the support wall, and a third part (4 to 7) which connects the first two and can cooperate with the end of a similar metal part which has passed through an adjacent element.

Description

"Device for fixing an insulating element formed of fibers to a support wall"

The present invention relates to a device for fixing an insulating element formed on fibers, in particular ceramic fibers, to a support wall.

One of the usual techniques for thermal insulation of high temperature enclosures consists in placing a layer of insulating material based on refractory ceramic fibers on the hot face of a support wall which may be made of refractory steel. - silent, this layer being obtained by laying elements in the form of a parallelepiped called "modules" obtained either by cutting out sheets of needled fibers, stacked or more, for example in accordion, or by forming blocks in which the fibers are linked together, for example using a small amount of a binder, which does not reduce the flexibility of the module. Usually these modules, the dimensions of which, in two directions parallel to the wall-support are, for example 300 x 300 mm or 600 x 600 mm, are fixed individually to the support wall of the thermal enclosure by means of a device. metal attachment inserted on the one hand, into the module itself by gluing or by a mechanical system, and fixed on the other hand to the shielding at the time of construction of the wall by welding, screwing, or any other way.

In existing systems, the modules have an independent fixing, and they are therefore independent of each other, their connection between them being effected only by contact and friction of the strips of ^' ceramic fiber more or less compressed and tightened together on others. This has the disadvantage that if a fixing fails, there is a risk of seeing the corresponding module detach from the wall, which can

F £ U! L Ξ DU fiirJ ^ ACSME T then be damaged by the temperature of the atmosphere of the enclosure.

The object of the invention is to produce a positive fixing device, which avoids this drawback by allowing a provisional holding of a module, even in the event of failure of its fixing to the wall, this device also being ^" at least as inexpensive and easy to implement as existing devices.

The invention thus provides a fastening device on a supporting wall of an insulating member formed of fibers, this device comprising a piece mé¬ Metallic which a first part is able to pene- ^"trate within said module by removing the fi¬ bers and a second part of which is calculated to be fixed to the wall by welding or using a fastening member such as a screw head which has the particularity that said part of the metal part is capable of penetrating into the element parallel to the wall and at a certain distance from this wall over a length greater than that of the element in the direction in which it passes through it, in that the metal part comprises a third part capable of co-operating with one end of another metal part which has passed through an adjacent element, said third part connecting the first and second parts together.

^" Preferably the third part 'is available in a plane perpendicular to that of the support wall, and is intended to be placed in the junction plane between two adjacent modules.

According to an interesting method, the metal part, as a whole, is obtained from a single metal rod, suitably bent.

Advantageously, the first part is made up of ^" two branches parallel to each other and

t ~~? - - ~~ "~~ ~ ^ - ~~ ^' ~ - ~ - ~~" ~. ~' ~ - ⁾ - L * f ^~ > ^~ T ^~ - - ~~ ψ ~~~ - placed to be parallel to the surface of the support wall, and spaced from the latter, the second part extends in a plane intended to be tangent to the surface of the support wall and is intended to be welded to said support wall or to be crossed by a fastening member thereto, and the third part is intended to be crossed with friction by the ends of the two branches constituting the first part of an adjacent metal part. The invention goes. now be described in more detail with the aid of a practical, nonlimiting example, illustrated in the drawings among which:

Fig. 1 is a perspective view showing a metal part according to the invention and a module not engaged in the part;

'Fig. 2 is a view similar to that of FIG. 1 but with the module engaged in the part;

Fig. 3 is a partial sectional view of an enclosure wall constructed using the device of the invention;

Fig. 4 is a perspective view, from another angle than Figures 1 and 2, showing the cooperation of two parts.

The metal part 1 visible in the figures is obtained by bending a refractory steel rod.

It has two parallel branches 2, 3, of the same length, one end of which ^" ends in point and the other end of which is connected to a curved part 4, 5. These curved parts have the shape of an arc of circle extending over a little more than 180 °, with an internal radius close to the half-diameter of the branches 2, 3 for a reason which will be explained later. The curved parts 4, 5 are situated in a plane perpendicular to that of the two branches 2, 3 and their open part

r '"?" - -) "- ^• is oriented in a direction which is 45 ° with the plane which contains the branches 2, 3, going towards the mediating plane of the two branches. The curved parts 4, 5 are each connected, on the side opposite to the branches 2, 3 to a rectilinear part 6, 7 perpendicular to the plane which contains the branches 2, 3.

The two rectilinear parts 6, 7 are of the same length, and they are connected .between them, at their end opposite to the curved parts, by a part of. connection 8, which is substantially rectilinear and has a direction parallel to the intersection of the two planes one containing the branches 2, 3 and the other the straight parts 6, 7. The connection part 8 comprises two curvatures 9 , 10 in the shape of a U, situated in a plane parallel to that of the branches 2, 3.

One of these bends, 9, is open in the direction of the branches 2, 3 and the other 10, in the opposite direction.

The whole of the part 1 is symmetrical with respect to the mediating plane of the branches 2, 3, apart from the curvatures 9, 10.

FIG. 1 shows, next to a part 1, a module 11 of ceramic fibers in the shape of a rectangular parallelepiped, formed of a stack of fiber plates cut in the shape of a rectangle and linked between them. FIG. 2 shows the same module 11 into which the branches 2, 3 have penetrated. The branches 2, 3 are of sufficient length so that their end then leaves the module ^" 11 on the face opposite to that by which they entered and the connecting part 8, with its ^" curvatures 9, 10 is in the plan of one of the large faces of the module.

Figure 3 further shows a support wall 12 against which is placed a series of modules 11, 11a, 11b held by parts "1, la, lb. These parts ^'

~ - ^~ ~ ~ " ^~ " ^~ - ' ^~ - ~ ^{> ~} "~ ^~ - 1 are made integral with the support wall 12 by welding or by means of hooking means 13, 14 such as studs or screws whose head is spaced from the support wall by a distance substantially equal to the diameter of the rod from which part 1 is made. The attachment means can cooperate with one or the other of the curvatures 9, 10. These curvatures preferably have an internal radius close to the half-diameter of the rod of the stud or screw 13, 14 and a. curve extending over a little more than 180 ° so as to obtain an elastic blocking.

FIG. 4 shows the way in which two metal parts 1, 1 cooperate when the installation is finished. As can be seen in this figure, the branches 2, 3 of the part 1, after having passed through the module 11, not shown in this figure, penetrate into the curved parts 4a, ^' 5a of the adjacent part 1a. The end of the branches 2, 3 of the part 1. is slightly separated from the rest position, and this end is placed parallel to the branches 2a, 3a of the part la, and in contact with them. The friction of the ends of the branches 2, 3 of the part 1 against the curved parts 4a, 5a and the branches 2a, 3a of the part contributes to keeping the part 1 in place relative to the part 1a.

Due to the fact that the curved parts 4a, 5a have the shape of an arc of a circle which extends over more than 180 ° the branches 2, 3 can only penetrate inside these curved parts or leave it by a displacement ¬ along the axis of the branches.

Consequently, the parts 1 and 1a cannot separate once they have been fixed to the wall.

F -ta -.- W --_-— ~ - r -m- ~ ^~ —- * s --— ^~ - To facilitate the introduction of the branches 2, 3 into the bends 4a, 5a, one can, in varian¬ te, provide that these branches are of slightly different length. The operator then sets up the branch la _. longer, then shorter.

According to a first embodiment of the device of the invention, to build the insulation of an enclosure, one begins by placing, by welding for example, fixing studs 13 on the wall (fig.

10 Figure 5) and then, a module 11 being attached with the help of the part 1 corresponding métallique-, the end of the branches 2, 3 protrudes on one side, a new module is equipped with approach previously IIa ^' its metal part, and it is advanced in such a way that the

15 mites of the branches 2, 3, which project from the module 11 already in place enters the curved parts 4a, 5a of the part 1a of the new module, and that simultaneously a stud 13a enters the curvature 9a of the part

. the. This is then fixed by a simple push

20 from module 11a to module 11.

According to another embodiment, which does not require the prior fixing of the stud, and therefore gives more flexibility, the fixing means are not studs fixed beforehand, but self-tightening screws.

-25 tapping machines 14a, 14b, which are put in place in the curvature 10 by the operator who pushes slightly to the left (in FIG. 3) the fibers of the module already in place, which then return to their position by elasticity. In addition to or in replacement of that which is

30 placed in the curve 10, it will be observed that this operating mode allows the installation of two metallic parts 1 in the same module, directed perpendicularly to one another.

In all cases, 1 pieces of shapes

35 special ones can be provided for angles, orifices and other singular points of the enclosure, for example, at one end of the line, so that the metal piece does not go beyond the limit of the module, the in¬ curvation 10 can be deleted, and at the other end of the line, for the same purpose, the branches 2 and 3 can be shortened.

Other operating modes are, of course, possible.

Whichever fixing system is used, installation is simplified because the operator can always see the fixing at the time of the operation.

The main advantages of the invention are as follows:

- the manufacture of the modules is extremely easy, the metal attachment device being put in place after the constitution of the fiber module itself.

- The assembly is done "following", each module being individually compressed, on demand, depending solely on the distance chosen for the points of attachment to the shielding.

- In each module, the compression of the strips is uniform, between them and over their entire surface.

- You can, at will, install or not a ceramic fiber underlay between the furnace shield and the modules.

- This underlay may also have been placed on the module during manufacture.

- The fixing of each module on the shielding of the oven can be done in any way by ^" stud welded on the ^" shielding and nut. By screw passing through the shield and nut-By self-tapping screw-By welding, either manual or automatic, without this list being exhaustive.

F— “t” î s r- f ^~ -.- ^~~ ι— ..-, -, mj * - * - ΛΛi a ”:

Claims

1. A device for fixing an insulating element formed of fibers to a wall-port, this device comprising a metal part, a first part of which is capable of penetrating inside said module by spreading it apart the fibers and of which a second part is calculated to be fixed to the wall by sou¬ dage or using a fastening member such as a screw head, characterized in that the metal part, in its together, is obtained from a single metal rod ^" suitably bent, so that said first part of the metal part is capable of penetrating into the element parallel to the wall and at a certain distance from this wall on a length greater than that of the element in the direction in which it passes through it, and that the metal part comprises a third part capable of cooperating with an end of another metal part which has passed through an adjoining element nt, said third part connecting between them the first and the second part.

2. Device according to claim 1, ca¬ characterized in that the third part is arranged in a plane perpendicular to that of the wall-sup¬ port, and is intended to be placed in the plane .de junction between two modules adjacent.

3. Device according to one of claims 1 and 2 wherein the first part consists of two branches parallel to each other and arranged to be parallel to the surface of the support wall, and spaced from the latter, the second part s' extends in a plane intended to be tangent to the surface of the support wall and is intended to be welded to said support wall or to be traversed in a fixing member thereto, characterized in that the third part, intended to be crossed with friction by the ends of the two branches constituting the first part of an adjacent metal part, comprises curved parts in the form of an arc of a circle extending over more than 180 ° with an internal radius close to the half-diameter of the branches, and intended to be crossed by them.

4. Device according to claim 3, ca¬ acterized in that the two branches are of different length.

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