DE2607633A1 - Three layered prefabricated chimney component - has horizontal wire loop round movable inner pipe and LED through to concrete reinforcement - Google Patents

Abstract

The triple-layered prefabricated chimney component comprises an inner pipe of fireproof material, sheathing heat-insulating layer, and outer layer of pref. light concrete, the inner pipe being displaceable lengthways for heat expansion compensation. A horizontally aligned wire loop (4) is laid round the inner pipe (1b). The open end of this is led upwards at an angle through the insulating layer and into the external concrete layer and is fastened to the reinforcement in this. There may be three or more inside pipe pieces set one on top of another, the one at the bottom being held by the wire loop. There may be an eye-loop at one end of the wire loop, through which the free end can be passed. It may be made of galvanished steel wire or cable, or of abrasion and/or heat resistant plastic.

Description

Precast chimney

The invention relates to a prefabricated chimney part, which consists of three shells, namely of at least one inner tube made of refractory material, one the inner pipe giving off a heat-insulating insulation layer and an outer layer made of concrete, preferably made of lightweight concrete, the inner tube within the Thermally insulating layer for the purpose of equalizing the thermal expansion is arranged.

When transporting and installing such prefabricated chimney parts the Geiahr that due to the displaceability of the inner tube within the demi layer this in the vertical or almost vertical state of the finished part downwards can slip out.

There are therefore already known arrangements in which i for the transport and / or assembly in the vertical position Gripping tools both are provided for the outer concrete layer as well as for the inner pipe. At a known arrangement, the gripping tools for the inner tube consist of parts that are introduced into the interior of the inner tube and spread out there, whereupon they hold the inner tube under tension. In addition to these spreading tools are for the outer concrete layer there are tools that are attached to the mounting screws of the attack the outer concrete layer and connect to hoists or the like. In this known arrangement, both the tools for the outer concrete layer as well as the tools for the inner pipe are attached.

The disadvantage of this known arrangement is that the mentioned Gripping tools are complex and expensive and that there is a large additional expenditure of time means during the assembly and especially when transporting the prefabricated chimney parts to work with these tools.

The invention is accordingly based on the object of a Sohornstein prefabricated part of the type mentioned in such a way that despite the required mobility the inner pipes within the dairy layer, the prefabricated chimney parts can be easily removed and easy to transport and assemble.

This object is achieved according to the invention in that around the inner tube an approximately horizontally running wire loop is placed, the free end of which is inclined passed upwards through the insulation layer and into the outer concrete layer attached to the reinforcement of the outer concrete layer.

With this arrangement it is achieved that the inner tube in a simple Way in the vertical or almost vertical state of the prefabricated chimney is held in its position and not due to gravity to the insulation layer can slip downwards. The effort required for this is minimal and In particular, there are no additional tasks or expensive tools complicated operations are required.

Accordingly, the costs incurred by the design according to the invention and securing the prefabricated chimney part are also very low.

Another advantage of the arrangement according to the invention is that that in spite of the perfect and simple securing of the inner tube this securing does not have to be additionally attached by unskilled assembly workers, but is built into the prefabricated chimney from the start, so that a fuse Do not forget the inner tube as in the known arrangements will can. The risk of accident that may arise from forgetting to do so, as well as the risk of destroying inner pipes and prefabricated chimney parts is thus effectively excluded.

The arrangement according to the invention also has the advantage that despite this flawless securing the free mobility of the inner tube upwards through the Fuse according to the invention is not hindered, but rather are movable according to above no limits at all.

The arrangement according to the invention can be used with prefabricated chimney parts use that only have an inner pipe, but look just as good with such prefabricated chimney parts, in which in a known manner three or more individual pieces of inner pipe on top of one another are set. In the latter case, only the lower piece of inner pipe in each case is in the as described, held by a wire loop, while the following ud a closed chimney prefabricated interior pieces on this lower one Sit on the pipe section and be carried along by it through the wire loop.

In a corresponding manner, the arrangement according to the invention can aud Use prefabricated chimney parts with several flues, whereby the lower inner pipe piece of each individual Ruchzuges in the described Way is secured.

It is advantageous if the wire loop is at least one end is provided with an eyelet through which its free end is passed and is then pulled taut so that the wire loop is under tension from the outside around the inner tube. The free end of the wire loop can also be provided with an eyelet, with which it is either on a section of the reinforcement can be hooked or fixed with an additional binding wire.

Another possibility is to use a wire rope or the like.

double around the jacket of the inner tube in a horizontal position and the two free ends of the wire rope it through as a result of the double guidance Pass the loop formed and tighten in the manner described. In this case, the two free ends of the wire rope must be attached to the reinforcement will.

A plastically deformable wire can be used so that fixing to the reinforcement and bracing by wrapping and / or twisting can be done.

Various materials are conceivable for the wire loop.

A galvanized steel wire or rope can be used in an expedient manner made of galvanized steel wire can be used; however, it is also possible to use other materials, For example, wear-resistant and heat-resistant plastic should be used, provided that this is the case due to the ii Schernstein existing temperatures on the one hand and due to Admission requirements on the other hand appear possible. The fact that a burning or fusible material is used for the wire loop, the effect is impaired the arrangement according to the invention not, since generally after a one-time assembly A subsequent dismantling of a chimney is out of the question and therefore a fuse for the inner tubes is no longer required after assembly.

In a method for producing the prefabricated chimney part according to the invention First, an insulation layer is applied to a lower concrete layer in the mold and then placed the inner tubes. Before the lower inner tube in the assembled state is placed, it is provided with the wire loop in the manner described and this is tightened. Your free end is then through the inner tubes covering Danish layer led out and æhräg outwards to the reinforcement of the outer Concrete layer brought there. Then the wire loop is stretched and with its free End attached to the reinforcement. Then the outer concrete layer is filled.

The invention is illustrated below with reference to exemplary embodiments in the drawing explained in more detail.

Fig. 1 shows a perspective view of a prefabricated chimney part, to which the invention applies.

Fig. 2 shows a perspective view of an embodiment the type of fastening according to the invention for an inner pipe stick.

Fig. 3 shows a modification of the perspective view Embodiment according to FIG. 2.

Fig. 4 is a longitudinal section through the buttocks of the prefabricated chimney Fig. 1 with the inventive securing of the inner tubes.

Fig. 5 shows a perspective view of a prefabricated chimney with two flues lying next to each other, on which the ore is also fed Can apply.

6 is a longitudinal section through the shear component according to FIG 5 with the definition of the inner tubes according to the invention.

The prefabricated chimney part according to FIG. 1 is designed with three shells and consists of inner tubes 1 made of refractory material, one surrounding the inner tubes 1 heat insulating insulation layer 2 and an outer layer 3 made of lightweight concrete. the Inner pipes 1 are composed of several individual pipe pieces 1a per prefabricated part, which interlock with tongue and groove and are connected by mortar. (See. Fig. 4).

The inner tubes are longitudinally displaceable within the insulating layer 2 surrounding them arranged so that thermal expansion can be compensated. For this reason there is however, there is also the risk that the inner tubes after transport or during assembly can slip out of the insulation layer 2 at the bottom.

2 shows a perspective illustration of an embodiment the definition of the respective lower inner pipe section provided according to the invention Ib inside the prefabricated chimney part. For this purpose, around the inner pipe section 1b is a placed approximately horizontally extending wire loop 4, the free end 4a at an angle guided upward through the thin layer 2 into the outer concrete layer 3 and is attached to the reinforcement 5 (see. Fig. i).

In the embodiment of FIG. 2, the wire loop is at its the inner tube 1b facing the end provided with an eyelet 6 through which your free End 4a is passed, po that the wire blade 4 can be drawn and rests under bias against the outer circumference of the inner tube 1b. The free The end 4a can also be provided with an eyelet 7 with which it is attached to a section the reinforcement 5 (see. Fig. 4) hooked or with an additional plastically deformable Binding wire can be set.

Fig. 3 shows a similar arrangement in perspective Fig. 2 in a modified embodiment. Here is the wire loop 4 from a wire rope 8 or the like, which - as shown - in a double layer around the jacket of the inner tube ib is guided around so that a loop 9 is formed.

The two free ends 8a of the wire rope are through this loop 9 inserted through it, so that the wire loop is tightened in the manner described can be. In this case, the two free ends of the wire rope 8 must both on the reinforcement. There is a possibility that the wire rope 8 consists of a plastically deformable wire or is formed by this, so that the attachment to the reinforcement by wrapping around the bars of the reinforcement and / or can be done by twisting, whereby the bracing of the Wire clusters 4 can be brought about. The order after Fig. 3 has the advantage that the wire loop is attached in a very simple manner Una can be formed, with additional eyelets or the like are not required.

Fig. 4 is a longitudinal section through the prefabricated chimney Fig. T and shows the definition of the lower inner tube piece ib by means of the wire loop 4, the free end 4a of the wire loop 4 in the illustrated embodiment is attached to a cross bar 5a of the reinforcement 5 of the outer concrete layer 3. on in this way, the lower inner pipe section ib and thus those approaching it Inner pipe pieces la held against the direction of arrow 10 securely while it on the other hand, it can move in the direction of arrow 10 upwards as desired.

FIGS. 5 and 6 show a prefabricated chimney part equipped according to the invention with two adjacent flues, with the lower inner pipe pieces Ib wire loops 4 are assigned in the manner described, with which they are attached attached to the reinforcement 5 of the outer concrete layer 3 and against slipping out are secured downwards.

The determination of the inner pipe pieces is therefore already carried out during the manufacture of the prefabricated chimney part. The prefabricated chimney parts are produced horizontally, with a lower concrete layer 3 first being introduced into the mold, on which an insulating layer 2 and then the inner pipe pieces la and lb are placed. Before the lower inner pipe section Ib is placed, it is provided with the wire blade 4 in the manner described and this is pulled taut. Its free end 4a is then led out through the insulating layer 2 covering the top of the inner pipes and led obliquely outwards to the reinforcement of the outer concrete layer 3 inserted into the side of the mold. The outer concrete layer is then filled on the sides of the inner pipes and above the insulation layer 2 resting on the inner pipes. The free end 4a of the wire loop 4 can optionally also be attached to the reinforcement of the outer concrete layer placed on the inner pipes from above.

Claims (10)

Claims 1. Precast part consisting of three shells, namely made of at least one external refractory material, one the inner tube surrounding heat insulating insulation layer and an outer layer of concrete, preferably consists of lightweight concrete, with the inner pipe inside the heat-insulating insulation layer is arranged to be longitudinally displaceable for the purpose of compensating for the thermal expansion, characterized in that un the inner tube (lb) is an approximately horizontally Wire loop (4) is placed, the free end (4a) obliquely up through the Insulation layer (2) passed through into the outer concrete layer (3) and attached to the reinforcement (5) the outer concrete layer (3) is attached. 2. Precast chimney part according to claim 1, characterized in that that three or more individual inner pipe pieces (ia) are placed on top of one another, with each lower inner pipe section (lb) is held by a wire loop (4). 3. Application of the features of claims 1 or 2 to prefabricated chimney parts with several flues, the lower inner pipe piece (ib) of each individual Smoke is held by a wire loop (4). 4. Prefabricated chimney part according to one of the preceding claims, characterized in that the wire loop has at least one end with a Eyelet (6) is provided through which its free end (4a) can be passed. 5. Precast chimney part according to claim 4, characterized in that that the free end (4a) of the wire loop (4) is provided with an eyelet, with which it can be hooked either to a section (5a) of the reinforcement (5) or with an additional binding wire can be determined. 6. Precast chimney part according to one of claims 1 to 4, characterized characterized in that the wire loop (4) is formed by a wire rope (8) or the like is, which is led around twice in a horizontal position around the jacket of the inner rotary (ib) is, the two free ends (8a) of the wire rope (8) by the result of the Double guide formed loop (9) of the wire rope (8) passed through and on the reinforcement (5) are specified. 7. Precast chimney part according to one of the preceding claims, characterized in that the wire loop (4) consists of a plastically deformable Wire consists or is formed by this, with the definition of the reinforcement (5) and the tension is brought about by wrapping and / or twisting. 8. Precast chimney part according to one of the preceding claims, characterized in that the wire loop (4) is made by a galvanized steel wire or a rope is formed from galvanized steel wire. 9. Precast chimney part according to one of claims 1 to 7, characterized characterized in that the wire loop (4) consists of a wear-resistant and / or heat-resistant Plastic is formed. 10. Process for the production of a chimney prefabricated part according to a of the preceding claims, in which lying on a lower one introduced into the mold Concrete layer first an insulation layer and then the inner pipes are placed, characterized in that the lower inner pipe section in the assembled state in front of his Insertion into the mold is surrounded by a wire loop, which is then tightened whereupon its free end through the then laterally and from above on the Inner pipes passed through on applied insulation layer and obliquely outwards to the reinforcement of the outer concrete layer is led, whereupon the wire loop tensioned and attached with its free end to the reinforcement, whereupon then the outer concrete layer is filled.