DE3346211A1 - Cable-duct pipe system of stable shape, consisting of extended and curved pipe and sleeve parts - Google Patents

Abstract

The internal space of the pipe parts is divided into a plurality of independent longitudinal chambers. In this way, a multiple cable-duct pipe is obtained which is laid in one operation. The longitudinal chambers and the complete pipe have a polygonal cross-section which is designed, for example, to be square (Fig. 3). Special pipe parts allow the individual longitudinal chambers to be guided independently of one another. In consequence, the pipe network can be branched towards the consumer. The flat and straight-lined shape makes it considerably easier to draw the cables in, since in contrast to pipes which are drawn in subsequently, there are no inner curves nor the friction which is caused by said curves. Furthermore, sealing with respect to pressed gas is provided by bonding to the sleeves, and it is possible to shoot in winch cables or cables, using compressed air. The multiple cable-duct pipe according to the invention is primarily used for cables of small diameter, preferably fibre-optic cables. An optimum cable-duct pipe for any application purpose can be offered by the production-engineering combination of different cross-sections. <IMAGE>

Description

Rigid cable duct system, consisting of stretched

bent and curved pipe and socket parts.

The invention relates to a dimensionally stable cable duct system, consisting made of stretched and curved pipes and socket parts.

Laying cable ducts in the ground is a very time-consuming process. and costly measure. In addition, it has significant traffic delays connected, as this work mostly has to be carried out in the street area. That is why every builder tries to make the excavation work so quickly and so rarely as possible. Cable ducts that have already been laid are therefore used for as long used as humanly possible.

With new tasks and a generally increased standard of living it has proved necessary to strengthen existing pipeline networks and to add new ones embarrassed. Since it is not always possible to route individual cables with cable ducts, If the pipeline network is strengthened, it is often necessary to move in completely. At the same time The use of several pipes is an increased flexibility and thus a better future security accessible. This pipe network allows the pipes to be laid independently of one another in terms of time and retracting cables of the appropriate diameter with relatively little effort.

Cable ducts already installed, the clear width of which is a certain Size, you can use a composite of several corrugated pipes or other Equip pipe systems. The company KABELMETAL shows in its brochure "Telecommunication cables Accessories GC 584, edition 3Vtf "Lac 1 EM /19.12.83 - - - ~~~~ -.

several application examples and combinations. This technique is a Makeshift, afterwards, to subdivide pipe runs several times in order to be independent of each other pulling in or pulling out several small diameter cables. This results in but technical difficulties. Because pipes when installing cable drums or reels run off and the impressed curvatures are retained, it comes to increased tensile and frictional forces. In the case of longitudinally elastic corrugated pipes, experience has shown that Curvatures and torsions of the pipe assembly are compressed in the laying direction. The laying must therefore largely be carried out in sections and requires a lot of effort. The THYSSEN PLASTIK ANGER brochure is an example of this "Corrugated plastic pipe system", 132 TPA 1 D 7.8QM. The great expense of laying of cable ducts with the current state of the art, the prospectus shows, again by THYSSEN PLASTIK ANGER, "Works standard for cable duct construction", 1/80. In mostly concreted A multitude of cable ducts is laid, if necessary in one manhole further work step can also be subdivided with corrugated pipes. Building a Cable duct shaft is time, cost and space intensive, the latter, because according to The round shape of the cable ducts requires a large number of spacers and a lot of unused space on the one hand between the cable ducts, on the other hand but also remains within with re-drawn pipe systems.

The invention has set itself the task of creating a dimensionally stable cable duct system, consisting of stretched and curved pipe and socket parts to create, in which, on the one hand, the subsequent subdivision by means of further pipes is omitted and on the other hand a higher packing density of the installed cables is achieved.

The cable duct system according to the invention is characterized in that that the interior of the pipe parts in a Majority of independent Longitudinal chambers is divided.

Preferably both the individual longitudinal chambers as well as that Cable duct pipe a total of a polygonal cross-section. Further advantageous refinements of the invention are the subject of the subclaims, which are hereby to be shortened the description is expressly referred to.

Using the example of a multiple cable duct (multiple KKR) the invention is presented with square cross-sections and the following figures.

Fig. 1 shows a longitudinal section through the connection of two multiple cable ducts by means of socket parts.

Fig. 2 shows an enlarged section of the connection zone Fig. 1.

Fig. 3 shows a cross section through the multiple cable duct and the socket parts.

Fig. 4 shows a possible division of the multiple cable duct tube in the course of structuring the pipe network.

The embodiment of a multiple cable duct according to FIG Invention has square cross-sections.

Rigid PVC is provided as the material, the extended lengths of the Pipes are, for example, 6 m (like conventional round cable ducts), and Elbows are used at the corner points. The individual parts can be plugged together and are connected with PVC glue. The external dimensions are e.g. 110 x 110 mm and the multiple KKR 1 is divided into four longitudinal chambers 4 and for cable diameter Suitable up to approx. 40 mm (see Fig. 3). For example, it would also be possible to do this Divide the tube into nine chambers for cable diameters up to approx. 28 mm. With larger External dimensions or a different cross-sectional shape are speaking more Chambers or other clearances can be realized. The assembly is carried out by inserting or Attaching inner and outer sleeves, 3 and 2, in or onto a pipe end. Afterward the next pipe end is inserted, everything up to the stop and using PVC glue. See FIGS. 1 and 2 in this regard.

When building a pipe network with the multiple KKR, the result is Need to branch this. This is achieved by instead of Another multiple KKR 1, for example, four individual pipes 5 in the sockets 2 and 3 of the strand end tucked in. These split up the multiple KKR and branch it according to the use of straight and curved tubes 5. In their further connections are only the correspondingly reduced outer sleeves 2 or the inner sleeves 3 are required. An example of the continuation of the primary network, consisting of multiple KKR 1, to consumers and consumer groups as secondary FIG. 4 shows a network using the single pipe 5.

The unit of the multiple KKR enables the laying of a pipe network in a single operation.

This saves valuable time and the further expandability of the laid Line networks are preserved. The angular design compared to the round has the disadvantage a larger surface and less strength, but for more space-saving and easier laying can be chosen because the inner chamber partitions stiffen the pipe string and thus the dimensional stability even with a larger cross-sectional area preserved. The laying is done evenly and in a straight line, what the subsequent Pulling in the cable is made much easier as there is hardly any internal friction as a result comes from additional curvatures inherent in the system. Because by connecting the Pipe parts 1 or 5 by means of sleeves 2 and / or 3 and the gluing of the parts pressure gas tightness is achieved, there is the possibility of using winch ropes or cables Compressed air shoot in. The multiple KKR 1 can be laid in the ground to save space, because, in contrast to conventional, round pipes, there are no larger empty spaces between the individual strands. The KKR according to the invention is particularly suitable for laying cables with small diameters, preferably fiber optic cables.

A wide variety of designs can be created by combining different cross-sections in terms of manufacturing technology. This makes it possible to provide the right pipe system for a wide variety of applications. This ensures flexibility and future security with the increasing requirements for cable duct systems as essential installation requirements for intermediaries in communication and supply networks.

Claims (10)

Rigid cable duct system, consisting of stretched and curved pipe and socket parts, characterized in that the interior the pipe parts (1) divided into a plurality of independent longitudinal chambers (4) is. 2. Cable duct system according to claim 1, d a d u r c h g e k e n n z e i c h n e t that pipe parts (5) said plurality of longitudinal chambers (4) continue independently of each other. 3. Cable duct system according to claim 1 or 2, characterized g e k e n n z e i c h n e t that the longitudinal chambers (4) and the cable duct pipe parts (1 and 5) have a total of a polygonal cross-section. 4. Cable duct system according to claim 1 or 3, characterized g e k e n It should be noted that the cross-sections of the longitudinal chambers have unequal surface areas to have. 5. Cable duct system according to claim 3 or 4, characterized in that that the polygonal cross-sections are rectangular, preferably square acts (Fig. 3). 6. Cable duct system according to one of the preceding claims, d a d u r c h g e k e n n n z e i c h n e t that the longitudinal chambers (4) are assigned inner sleeves (3) are whose outer cross-sectional contours match the inner cross-sectional contours of the longitudinal chambers (4) and in the middle area outside a stop for the End faces have the chamber walls, as well as have bevels at their ends, which a continuous transition from the inner wall of the relevant longitudinal chamber (4) to the inner wall of the inner sleeve (3). 7. Cable duct system according to claim 6, characterized in that g e k e n n z e i c h n e t that the inner sleeves (3) are connected by material webs. 8. Cable duct system according to one of the preceding claims, characterized characterized in that outer sleeves (2) are provided, the inner cross-sectional contour of which corresponds to the outer contour of the multiple cable ducts (1) or the pipe parts (5) and in the middle area there is a stop for the end faces of the inside Outer contour of the multiple cable duct pipes (1) or pipe parts (5) to be connected is located. 9. Cable duct system according to one of the preceding claims, characterized characterized in that the pipe and socket parts are made of rigid PVC. 10. Cable duct system according to one of the preceding claims, characterized notices that by gluing the pipe and socket parts by means of PVC adhesive pressure gas tightness of each chamber to the other and to the outside achieved will.