DE102017128801A1 - Insulating element and method for insulating a pipeline with such - Google Patents

Abstract

It is known to provide insulating surfaces with conventional insulation elements to prevent heat radiation. Here several layers of insulation are first cut and then applied one above the other. This represents a considerable amount of work on site and is to be avoided with the present invention, the insulation is simplified. The present invention therefore proposes an insulating element in the form of a Dämmschichtstapels, in which the required insulating layers are connected to one another with an edge offset, so that the insulating layers can be connected without cutting to a multi-layer insulation element on impact and can be assembled to form an overlapping insulation.

Description

The present invention relates to an insulating element and a method for insulating a pipeline with such.

It is already known in the 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. 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.

However, irrespective of the use of aerogels, it may be necessary to process insulating layer elements during installation on site and this can be time-consuming. This especially where several layers of insulation are to be laid one above the other.

In such cases, as a rule, not only several layers are laid one above the other, but also provided for an offset, so that there is no continuous break along the edges of the installed insulation layers. However, just this offset means a certain production cost and must be done on site. Especially with round installations, such as around pipelines, care must be taken that the insulation layers applied successively become larger, since with each applied insulation layer the outer radius becomes larger and consequently the area to be covered increases accordingly. This results in conventional processes much waste and it must be pieced and cut on site.

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 present invention is based on the object to reduce the cost of cutting insulation elements on site and to minimize the formation 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 11. Further useful embodiments of the Dämmelements can the subclaims 2 to 10 be removed.

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 a 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 connecting at least two Dämmschichtelemente, but preferably all Dämmschichtelemente a Dämmschichtstapels at once, 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 Dämmschichtstapel through ensures a thermal or cold bridge.

The nature of the selected connecting means, which hold together the Dämmschichtstapel, this may be different depending on the material used the Dämmschichtelemente. In particular, but not exclusively, the connection means may be, for example, a bond, seam or weld seam, pinning, stapling or other mechanical penetration with fastening elements.

In particular, the present insulating element of airgel is advantageous to produce, since just here the layered laying particularly useful is due to the dust during the cutting here particularly cut free to work during installation.

Particularly advantageously, the invention can be used in the insulation of pipelines, in the following a specially adapted for this purpose Dämmelement will be described and then explained how the laying of such takes place.

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 circular bending of the material, the layers will also shift in the radial direction relative to one another, so that initially the connecting means between the insulating layer elements may be arranged exclusively along a line-shaped or strip-shaped connecting region oriented parallel to a longitudinal edge. In detail, the connection can be formed either continuously or in sections continuously along the connection region, or only selectively at at least two points.

The bending is then 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 cut can be set without measuring this 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.

• 1 ein Dämmelement mit einem Dämmschichtstapel aus drei Dämmschichtelementen in einer perspektivischen Darstellung von schräg oben,
• 2 eine Dämmschicht, bestehend aus drei Dämmelementen gemäß 1 in einer perspektivischen Darstellung von schräg oben,
• 3 ein Schnittbeispiel für eine Dämmschicht aus mehreren Dämmelementen gemäß 1 in einer schematischen seitlichen Draufsicht,
• 4 eine Abwandlung eines Dämmelements gemäß 1 mit einem Flanschausschnitt in einer perspektivischen Darstellung von schräg oben,
• 5 eine mit einer Dämmschicht aus mehreren Dämmelementen gemäß 1 belegte Rohrleitung in einer schematischen seitlichen Draufsicht,
• 6.1 bis 6.6 eine schematische Darstellung einer Abfolge von Arbeitsschritten zur Anbringung von Dämmelementen gemäß 1 an einer Rohrleitung.

Show it

• 1 an insulating element with an insulating layer stack of three insulation layer elements in a perspective view obliquely from above,
• 2 an insulating layer, consisting of three insulating elements according to 1 in a perspective view obliquely from above,
• 3 a sectional example of an insulating layer of several insulating elements according to 1 in a schematic lateral plan view,
• 4 a modification of a Dämmelements according to 1 with a flange in a perspective view obliquely from above,
• 5 one with an insulating layer of several insulating elements according to 1 occupied pipeline in a schematic lateral plan view,
• 6.1 to 6.6 a schematic representation of a sequence of steps for the attachment of insulation elements according to 1 on a pipeline.

1 shows an insulating element 1 , which serves as an insulating layer stack 2 from three insulation layer elements 3 . 4 and 5 is made. It is an outer insulating layer element 3 , which is at the top in the drawing, a middle insulating layer element 4 and an inner insulating layer element 5 , which in the representation of the 1 lies at the bottom. These insulation layer elements are in a strip-shaped connection region 6 connected with each other.

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

At the left edge in the picture is a cut line 9 on the insulating element 1 along which a cut, such as a knife or a band saw, can be set so that only the projections of the upper two Dämmschichtelemente 3 and 4 can be separated while the inner insulating layer element 5 not being cut. Nevertheless, so congruent edges are produced and made as a fitting for laying.

The insulation elements 1 are then merged as in 2 shown. The supernatants of an insulating element 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 to form cold or thermal bridges. This is further in 3 illustrates where the interplay between projections and backsets can be seen even more clearly.

Also in 3 shown is the formation of an extension and an end piece. Through a cut 18 becomes a first insulating element 1 in an extension 10 and a tail 11 parts, with the extension piece 10 then can be applied to a surface beginning, while the tail 11 can be set on the opposite side to get there also a smooth conclusion. 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 occupancy of pipelines 13 , In this context shows 4 a variant of 1 in which a flange cutout 12 in the insulation layer stack 2 was introduced, with a common smooth edge through the insulation layer elements 3 . 4 and 5 round picks.

The assignment of a pipeline 13 is also in 5 showing, by way of example, a pipeline between two shut-off valves 14 should be insulated. As already described here are several layers of insulation 1 put together and form a three-layer insulation, as far as possible without the material must be cut. The procedure for producing such an insulation is in the 6 .1 to 6.6 are shown.

6.1 shows first an insulating element 1 which has a connection area 6 transverse to its longitudinal direction. Parallel to this connection area 6 can the insulation element 1 be bent without any uplift in the individual insulation layer elements 3 . 4 . 5 arise because the compound allows this because of their orientation and their narrow shape.

In 6.2 is then with a knife 15 along a cutting line 9 the supernatant of the two upper insulating layer elements 3 . 4 separated to a straight endpiece 10 to obtain.

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

The fixation of the extension 10 , as in 6.5 initially shown, via straps 16 with which the extension piece 10 first provisionally on the pipeline 13 is attached. This is followed by the final attachment using winding wire 17 which is between the straps 16 is arranged. Finally, the straps 16 are removed and available for the next step.

In 6.6 is finally shown again, as now the next insulating element 1 , but now without trimming, to the end piece 10 is set, wherein the respective insulating layer elements 3 . 4 . 5 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 under all side edge offset and interconnected Dämmschichtelemente whose connection allows a round bend and which allows a multi-layer wrapping the pipe in shock and at the same time a cropping the insulating layers on site avoids as much as possible.

LIST OF REFERENCE NUMBERS

1

insulating element

2

Dämmschichtstapel

3

outer insulating element

4

middle insulating layer element

5

inner insulating layer element

6

connecting area

7

Got over

8th

setback

9

intersection

10

extension

11

tail

12

flange cutout

13

pipeline

14

stopcock

15

knife

16

strap

17

winding wire

18

separating cut

Claims (10)

Insulating element consisting of an insulating layer stack (2) with at least two an all-sided edge offset having substantially rectangular insulating layer elements (3, 4, 5), and at least two Dämmschichtelemente (3, 4, 5) mutually fixing connecting means. According to Claim 1 , characterized in that the connecting means fix all Dämmschichtelemente (3, 4, 5) of the Dämmschichtstapels (2) mutually. Insulating element according to one of Claims 1 or 2 , characterized in that it is the bonding means is a bond, seam or weld, pinning, stapling or other mechanical penetration with fasteners. Insulating element according to one of the preceding claims, characterized in that at least one of the insulating layer elements (3, 4, 5) is made of an airgel. Insulating element according to one of the preceding claims, characterized in that the connecting means are arranged exclusively along a linear or strip-shaped, parallel to a longitudinal edge aligned connecting portion (6). According to Claim 5 Characterized in that parallel to the connecting portion (6) extending edges of the Dämmschichtelemente (3, 4, 5) have a layered different boundary offset, which also by a maximum projection of an outer Dämmschichtelements (3) to a minimum supernatant of a inner Dämmschichtelement (5) adjacent arranged Dämmschichtelement (4) on one side and / or of a minimum return offset of an outer Dämmschichtelements (3) to a maximum offset of an inner Dämmschichtelement (5) adjacent Dämmschichtelement (4) on the other side changed the insulation layer stack. Insulating element according to one of Claims 5 or 6 , characterized in that the connecting means are arranged selectively at least two points or at least in sections continuously along the connecting region (6). Insulating element according to one of Claims 5 to 7 , characterized in that the transversely to the connecting region (6) extending edges of the insulating layer elements (3, 4, 5) have a continuously constant edge offset. According to Claim 8 , characterized in that the position of the edge with the greatest 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 the Claims 5 to 9 b) wrapping a pipe (13) with the end piece (10) c) fixing the end piece (10) to the pipe (13), preferably by means of a winding wire or adhesive, d) applying a further insulation layer stack (2), wherein the supernatants of Dämmschichtstapels (2) overlap the Rückversatze the extension piece (10), e) if necessary repeating steps b) to d) with further Dämmschichtstapeln (2), f) straight separation of a End piece (11) of a Dämmschichtstapels, wrapping the pipe (13) with the end piece (11) and its fixation on the pipe (13).

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