WO2019042501A1

WO2019042501A1 - Insulating element and method for insulating a pipeline with same

Info

Publication number: WO2019042501A1
Application number: PCT/DE2018/100751
Authority: WO
Inventors: Harry Pfeiffer
Original assignee: Stadur-Süd Dämmstoff-Produktions-Gmbh
Priority date: 2017-09-04
Filing date: 2018-09-04
Publication date: 2019-03-07
Also published as: DE102017128801A1

Abstract

It is known to provide surfaces requiring insulation with conventional insulating elements to avoid heat emission. A plurality of insulating layers are first cut to size and then placed one on top of the other. This involves considerable effort on site, and the present invention aims to avoid this and simplify the insulation. The present invention therefore proposes an insulating element in the form of a stack of insulating layers, in which the required insulating layers are connected one on top of the other with an edge offset so that the insulating layers are connected in an abutting manner without cutting to size to form a multilayer insulating element and can be put together to form an overlapping insulation.

Description

INSULATION ELEMENT AND METHOD FOR THE INSULATION OF A PIPING SYSTEM WITH SUCH A

The present invention relates to an insulating element consisting of a Dämmschichtstapel having at least two all sides edge offset having substantially rectangular Dämmschichtelementen, and in each case at least two Dämmschichtelemente mutually fixing connecting means, and a method for insulating a pipe with such an insulating element.

Such an insulating element and a similar method are already known from EP 0 087 613 A1. This is a multilayer foam

Plate element produced with an offset between the plates, wherein the individual layers are connected to each other via a weld. In this case, the plates have different sizes and an offset, so that they can be arranged around a line to be insulated. After the individual layers have been wound around the pipe successively starting from the weld seam, the construction is connected by means of a closure means along the abutting edges of the outermost layer, for example adhesively bonded with an adhesive strip.

A method is also known from DE 94 18 369 U1, in which an edge offset leads to a tight connection between adjacent layers be generated, but this is achieved via a stair offset in the full material.

It is so far known from the prior art to connect to insulating surfaces with insulating elements, for which many different materials and characteristics are known and common. At lower temperatures and large areas such as facade insulation, for example, a coating with polystyrene is common, in the insulation of piping is often depending on the temperature range of the application foam or mineral wool use.

However, there are also in recent times so-called aerogels in use, which even with a very thin installation have very good properties as heat insulators. These are highly porous solids, which are synthesized by means of a sol-gel process. A mention as

Insulating material takes place approximately in DE 20 201 1 050 488 U1. Precisely in the case of such airgel materials, the finest dust particles are formed during processing, which are not toxic in themselves, but can accumulate in the lungs and damage them as a result. Processing can therefore only be carried out under appropriate respiratory protective measures and should be kept to a minimum.

The Dämmschichtstapel described above can not be transferred to aerogels. The welding of the layers mentioned in EP 0 087 613 A1 is not feasible with aerogels, furthermore a connection of the insulating layer stack as proposed in the cited disclosure can not take place.

An offset as in DE 94 18 369 U1, however, requires a complex processing, but due to the properties of the airgel for health reasons should be avoided. While aerogels bring a particular advantage in piping, because this can be saved considerably in space and partially in closely spaced pipes thereby the heat insulation can be significantly improved, this means a very considerable effort on site and causes heavy pollution and harmful dust by the fine dust particles formed during cutting.

Against this background, the object of the present invention is to reduce the cost of cutting insulating layer elements on site and to minimize the generation of waste and material dust during installation.

This is achieved by an insulating element according to the features of claim 1, and in particular by a method for insulating a pipeline according to the features of the independent claim 5. Further useful

Embodiments of the Dämmelements can be found in the dependent claims 2 to 4.

According to the invention it is provided that an insulating element consists of an insulating layer stack, so that several insulating layer elements can be laid at one time. In this case, the insulating layer elements have a mutual edge offset, which ensures overlap in the region of the edge offset when attached to each other insulating layer elements. All Dämmschichtelemente therefore have at two adjacent edges on a supernatant to the next layer, at the two other edges a return offset. The substantially rectangular cut insulation layer elements can thus be connected step by step to a surface, without causing a continuous break in the insulation. The Dämmschichtstapel is held together by means of connecting means, each at least two Dämmschichtelemente, but preferably all Dämmschichtelemente a Dämmschichtstapels at once, connect with each other and thus prevent slippage of Dämmschichtelemente against each other. When using such prefabricated and vorverbundener Dämmschichtstapel the laying of the insulating layer elements can be significantly accelerated and it is ensured that no continuous break through the insulation layer stack through ensures a thermal or cold bridge.

In particular, the present insulating element of airgel is advantageous to produce, since just here the layered installation is particularly useful and should be worked here very clean cut due to the dust during cutting here during installation.

Furthermore, according to the invention, a connection of the individual insulating layer elements should take place by suturing the individual layers together, or throughout the entire stack. The suturing allows a connection of airgel plates, which with a weld as in the

Technology could not be connected.

The invention can be used to particular advantage in the insulation of pipelines, with a specially adapted insulating element being described below and subsequently explaining how the laying of such is carried out.

In an insulating element according to the invention, which is to be used for the insulation of a pipeline, it must be taken into account that the insulation increases from one insulating layer to the next by the thickness of this insulating layer, the return offset must therefore be adjusted from layer to layer. In the case of the round bending of the material, the layers will also shift in the radial direction relative to one another, so that first of all the connecting means between the insulating layer elements are aligned exclusively along a line-shaped or strip-shaped parallel to a longitudinal edge

Connection area may be arranged. In detail, the connection can be either continuous or partially continuous along the Be formed connecting region, or even selectively at least two points.

The bending then takes place parallel to this longitudinal edge, the connection area runs in the laying state of the pipeline along. On the other hand, the edges running transversely to the connection region experience no displacement and there the edge offset also remains constant from layer to layer, preferably the same for all layers. However, the longitudinal edge and the opposite second longitudinal edge behave differently. They have a layer-wise different edge offset, wherein at an outer insulating layer element, the supernatant is the largest and / or the return offset is the smallest. The exception is the case that the connection area is located directly on a longitudinal edge. Then the return offset or supernatant also remains constant.

Correspondingly, in this case, in the case of an inner insulating layer element, the offset from the next higher layer is greatest, while at the other side the projection is the smallest.

By this prefabrication and the aforementioned type of connection, an insulating element can also be prepared for pipes, which can also be laid at least for long pipes sections without cuts. However, cuts are still required if an end piece or end piece is required for installation. An extension piece can be formed, in particular, by cutting off the projection or the offset so far that the cut runs along the edge of the farthest insulating layer element. The invention provides for this, that the position of the edge can be marked with the largest return offset on the opposite insulating layer element, so that along this line the

Can be cut without measuring it again. In the insulation of a pipeline run in different steps, which are repeated in the course of the pipeline. In one approach, an extension piece is first separated from an insulation layer stack, for example, by cutting along a perforation. This is wrapped around the pipe and held with straps until the extension between the straps, for example with winding wire, is attached to the pipe.

Then, a complete stack of insulating material is applied to the extension piece via the pipeline, wherein the constant projection of the insulation layer stack is applied conclusively to the corresponding reverse offset of the extension piece. Then this layer of insulating material is secured with straps and held by them until again, preferably with winding wire, the insulation layer is connected to the pipe. This is repeated as often as desired until no complete layer of insulation has more space. Then, an end piece is cut off and also connected in the manner described with the pipeline. The part cut off from the end piece can be used again as an extension piece for the next pipeline.

The invention described above will be explained in more detail below with reference to an embodiment.

Show it

1 shows an insulating element with an insulating layer stack of three insulation layer elements in a perspective view obliquely from above,

FIG. 2 an insulating layer consisting of three insulating elements according to FIG. 1 in a perspective view obliquely from above, FIG. 3 shows a sectional example of an insulating layer comprising a plurality of insulating elements according to FIG. 1 in a schematic lateral plan view,

FIG. 4 shows a modification of an insulating element according to FIG

1 with a flange in a perspective view obliquely from above,

FIG. 5 shows a pipeline with a layer of insulation comprising a plurality of insulating elements according to FIG. 1, a schematic lateral plan view,

Figure 6.1 to 6.6 is a schematic representation of a sequence of steps for attaching insulation elements according to Figure 1 to a pipe.

Figure 1 shows an insulating element 1, which is made as insulating layer stack 2 of three insulation layer elements 3, 4 and 5. It is an outer Dämmschichtelement 3, which is in the drawing at the top, a middle Dämmschichtelement 4 and an inner Dämmschichtelement 5, which lies in the illustration of Figure 1 at the bottom. These insulation layer elements are connected to one another in a strip-shaped connection region 6.

The individual insulating layer elements 3, 4 and 5 are rectangular cut and lie flat against each other, wherein the elements have an all-round edge offset. Each insulating layer element 3, 4 and 5 has opposite to an adjacent insulating layer element 3, 4 and 5, a projection 7 at two adjacent edges, however, a return offset 8 at the other two edges.

At the left edge of the picture, a cutting line 9 is recorded on the insulating element 1, along which a cut, for example with a knife or a band saw, can be set so that only the supernatants of the upper two Dämmschichtelemente 3 and 4 can be separated, while the inner Dämmschichtelement 5 is not cut. Nevertheless, such congruent edges are produced, thus producing an extension piece for laying.

The insulating elements 1 are then combined as shown in Figure 2. The projections of a Dämmelements 1 overlap exactly the Rückversatze of each adjacent Dämmelements 1 and vice versa, so that each layer is formed continuously and none of the edges are superimposed on

Cold or thermal bridges to form. This is further illustrated in Figure 3, where the interaction between supernatants and Rückversatzen is even more clearly visible. Also shown in Figure 3 is the formation of an extension and a

Tail. By a separating cut 18, a first insulating element 1 is divided into an extension piece 10 and an end piece 1 1, wherein the extension piece 10 can then be attached to a surface beginning, while the end piece 1 1 can be attached to the opposite side, there also a smooth To get graduation. This can be done in both surface directions so that with very few cuts a complete area occupancy can be realized according to the invention.

In particular, however, the invention is also suitable for the laying of pipelines 13. In this connection, FIG. 4 shows a variant of FIG. 1 in which a flange cutout 12 has been introduced into the insulating layer stack 2, which has a common smooth edge through the insulating layer elements 3 , 4 and 5 passes through. The occupancy of a pipe 13 is further shown in Figure 5, wherein a pipe between two shut-off valves 14 is to be insulated, for example. As already described, several layers of insulating material 1 are connected to one another here. set and form a three-layer insulation, as far as possible without the material must be cut. The procedure for producing such an insulation is shown in FIGS. 6.1 to 6.6.

FIG. 6.1 initially shows an insulating element 1 which has a connecting region 6 transversely to its longitudinal direction. Parallel to this connection region 6, the insulating element 1 can be bent, without causing warping in the individual insulating layer elements 3, 4, 5, since the compound allows this due to their orientation and their narrow expression.

In FIG. 6.2, the supernatant of the two uppermost insulating layer elements 3, 4 is then separated with a knife 15 along a section line 9 in order to obtain a straight end piece 10.

This extension 10 is then placed centrally on the pipe to be insulated 13, as shown in Figure 6.3. It is wrapped around the pipe according to Figure 6.4, so that the narrow edges collide on the bottom. Again, the corresponding edges are folded together and join together on impact to three continuous layers.

The fixation of the extension piece 10, as shown in Figure 6.5, initially via tensioning straps 16, with which the extension piece 10 is first provisionally attached to the pipe 13. This is followed by the final fastening by means of winding wire 17, which is arranged between the tension straps 16. Finally, the straps 16 are removed and are available for the next step again.

Finally, FIG. 6.6 again shows how now the next insulating element 1, but now without trimming, is attached to the end piece 10, wherein the respective insulating layer elements 3, 4, 5 of both elements join together to form continuous layers. Thus described above is thus an insulating element and a method for insulating a pipe with an insulating element, wherein the insulating element stacked on all sides edge offset and interconnected Dämmschichtelemente whose connection allows a Rundbie- supply and allows a multi-layer wrapping the pipe on impact and simultaneously Cutting the insulation layers on site avoids as much as possible.

I REPLY

insulating element

Dämmschichtstapel

outer insulating element

middle insulating layer element

inner insulating layer element

connecting area

Got over

setback

intersection

extension

tail

flange cutout

pipeline

stopcock

knife

strap

winding wire

separating cut

Claims

P A T E N T A N S P R U C H E

Insulation element consisting of an insulation layer stack (2) with at least two all-sided edge offset having substantially rectangular Dämmschichtelementen (3, 4, 5), and at least two Dämmschichtelemente (3, 4, 5) mutually fixing connecting means,

characterized in that the connecting means is a seam arranged exclusively along a line-shaped or strip-shaped connecting region (6) aligned parallel to a longitudinal edge, wherein the edges of the insulating layer elements (3, 4, 3) extending transversely to the connecting region (6) 5) have a continuously constant edge offset and at least one of the insulating layer elements (3, 4, 5) is made of an airgel.

Insulating element according to claim 1, characterized in that the connecting means fix all insulating layer elements (3, 4, 5) of the insulating layer stack (2) mutually.

Insulating element according to one of claims 1 or 2, characterized in that parallel to the connecting region (6) extending edges of the insulating layer elements (3, 4, 5) have a layer-wise different edge offset, this being a maximum projection of an outer insulating layer element (3 ) to a minimum projection of an insulating layer element (4) arranged adjacently to an inner insulating layer element (5) on one side and / or of a minimum return offset of an outer insulating layer element (3) to a maximum return offset of an inner insulating layer element (5) insulation Layer element (4) on the other side of the insulation layer stack changed.

Insulating element according to one of the preceding claims, characterized in that the position of the edge with the largest return offset on the opposite insulating layer element (3, 5) is marked as a cutting line (9).

Method for insulating a pipeline (13) with an insulating element (1) according to one of Claims 1 to 4, comprising the steps of a) cutting straight off an extension piece (10) of an insulation layer stack (2),

b) wrapping a pipeline (13) with the attachment piece (10) c) fixing the attachment piece (10) to the pipeline (13), preferably by means of a winding wire or adhesive,

d) applying a further insulating layer stack (2), wherein the

Supernatants of the insulating layer stack (2) overlap the Rückversatze the extension piece (10),

e) repetition of steps b) to d) with further insulation layer stacks (2), if necessary

f) straight cutting an end piece (1 1) of an insulating layer stack, wrapping the pipe (13) with the end piece (1 1) and its fixation on the pipe (13).