DE19825325A1 - Method of installing at least one pipe line and/or an empty conduit in already laid supply and sanitation pipes, esp. sewer pipe systems, does not affect operation of pipes - Google Patents

Abstract

The method involves introducing the pipe line and/or empty conduit (2) into the pipe (1) and attaching it/them to its wall. A tubular inner cladding (3) is inserted and/or pulled into the already laid pipe, whereby at least one flexible empty conduit and/or pipe line is mounted in the region of its outer surface. The flexible cladding is forced against the inner wall of the pipe by a pressure medium. An Independent claim is also included for

Description

The present invention relates to a method for installing at least one Lei device and / or an empty pipe for pulling a line, in particular Lei for information transmission, in laid sewer pipes, in sewer pipe systems or networks and the like, especially in sewer pipes or ventilation pipes, along their inner wall.

The field of communication continues to show strong growth rates and an end this growth is currently not foreseeable. While in particular the Te telecommunications has been carried out on a large scale via satellites at least the transmission of data and information via underground cables Maintain an equivalent rank to the possibility of transmission via satellite. In addition, lines and cables laid in the ground are becoming increasingly popular of importance with the introduction of fiber optic cables that allow high Transfer data at high speeds. Furthermore, na energy supply lines, especially for private households as previously laid in the earth.  

Especially with regard to fiber optic cables is a quick and inexpensive Ver Networking to set up nationwide communication networks desired. A sol Of course, laying cables or lines requires extensive earthworks, be it because it will be on existing, installed empty pipes or other usable ones Sewer pipes used.

A procedure for installing pipes and / or conduits, in which lines can be drawn into these empty pipes, such as Infor mation transmission lines or additional power supply lines, the is already being practiced, is that in existing sewer pipes, for example as wastewater pipes, which can have very large cross-sections, such new installing cables or conduits are attached to the walls, for example as by means of pipe or pipe clamps, which are connected to the Sewer pipe walls are pegged. Such a way is more understandable very labor-intensive and therefore costly and is only in sewer pipes with large Cross-section accessible to one person, feasible unless it is who the robot, guided and monitored by cameras, for such laying work used.

As an alternative to doweling individual pipes with individual pipe clamps It is also currently possible to use multiple conduits or pipes using clamps to attach, which brace the circumference of the entire channel cross section. Such clamps can also be installed using robots, even in front existing sewer pipes, such as sewage pipes, which are smaller Cross-section, which is still sufficient for such robots, i. H. sol pipe diameters must be 200 mm and more. It can be seen that the empty pipes and cables subsequently installed, whether with pipes or cables clamp or fastened with the mentioned clamps, completely the rough Ka are exposed to normal operation. These pipe routes must include both the wastewater flow withstand high water demand as well as high-pressure sewer cleaning. Experience is particularly evident on the filigree clamps and tension rings according to wastewater solids and sooner or later clog the channel, so that there it is to be expected that these fasteners will also be installed later  Pipes and conduits do not withstand the resulting back pressure become. For this reason, it is not foreseeable that such a procedure Enforce it in the future taking into account the expected disruptive factors becomes.

Based on the prior art specified above and the ver tied problems, the present invention is based on the object a method for installing at least one line and / or an empty pipe for pulling cables into installed sewer pipes, sewer pipe systems or - Specify networks and the like, which does not have the disadvantages mentioned of the previous procedures, in which one is sufficient protection of the subsequently installed empty pipes and lines is given and at who is not at risk of constipation as mentioned.

This problem is solved on the basis of the method mentioned at the beginning because by inserting a tubular inner lining into the sewer pipe ben and / or is drawn in, in the area of whose outer surface least a flexible empty pipe and / or a line is arranged.

The basic idea of the invention is in existing, laid channel pipes, in sewer pipe systems or networks, and the like, for example also in Ventilation pipes to pull in or push in a tubular inner lining and between the outer wall of this inner liner and the inner wall of the front existing sewer pipe, the new pipes or empty pipes to be later on to move in to order. With this procedure there are no additional Chen suspension elements or fasteners necessary to the individual, new Laying pipes and / or empty pipes in the sewer pipe to fix and hold. Furthermore, the tubular inner lining creates a new, smooth one Pipe wall created through which the wastewater is passed, so that no sturgeon places arise that hinder the flow or the flow through the sewer pipe could or in the area of those due to the settling of solids there carried in the wastewater, can form blockages. Rather, it will the smooth inner surface of such a new tubular inner lining the Hy promote draulic. All newly installed empty pipes and lines are of the same through the  Sewer pipe flowing medium separated and the risk of corrosion and abrasion regarding the newly laid lines is not given. At the same time, with the This procedure additionally sealed or refurbished sewer pipes become. It can be seen that practically unlimited possibilities are possible with this method existing, a data communication network with a relatively small structure to build and expand, as practically all households or other industrial and commu nale facilities are connected to sewer pipes that are used can, even if such sewer pipes have a relatively small diameter ha ben, for example also with sewer pipes, the diameter of which is between 80 and 150 mm, because the procedure according to the invention is also in such sewer pipes can be used.

It can happen that the conditions in the existing, laid channel pipes, sewer pipe systems or networks are such that the tubular interior clothing can only be retracted if its outer diameter is significantly reduced is larger than the inside diameter of the sewer pipe into which the tubular inside clothing should be inserted or drawn in. Especially for a sol Chen case becomes an irreversibly deformable as a tubular inner lining Retracted hose, with an outer diameter such that it easily into the Ka canal is retractable. Then this hose is, by suitable measure men, such as deformed by a high internal pressure and thereby counter pressed the inner wall of the sewer pipe, so that even between the deformed Hose and the sewer pipe wall, the pipes and / or empty pipes are immovable be pressed in bar.

A flexible hose is preferably used for such a deformable hose turns, furthermore, in relation to its cross-sectional dimensions can be folded so that there is a flat web that simply fits into a front existing sewer pipe or a sewer pipe system or network is retractable. With the Pulling in such a hose can simultaneously require empty pipes and Lines are applied to the outer surface. After the hose in the sewer pipe is retracted, the hose can be closed at its ends and by filling with a liquid medium or with a gaseous medium, at for example compressed air, pressed against the inner wall of the sewer pipe and then on the  Inner wall are irreversibly solidified, for example by heat or UV radiation, if the material of the hose is under heat me curable or UV curable material. After this the hose is solidified, the pressure can go away from the interior of the hose be taken. The hose is then close to the inner wall of the sewer pipe, holding the lines and conduits.

Basically, it is possible to install the lines and / or empty pipes (for pulling in lines) on all sides of the tubular inner lining and thus to be installed on all sides of the existing sewer pipe. Preferably However, such empty pipes and / or lines are on the upper area of the Applied to the outer surface of the tubular inner liner so that after the tubular liner is installed, on top of the Ka can be positioned.

To complete the installation work on site, i.e. H. at the construction site, it can facilitate be beneficial to use a tubular liner that already has the or contains the empty pipe (s) and / or the line (s) integrated in the wall. In Be Such a conduit can be pulled onto a deformable hose as the inner lining and empty pipes can be integrated into the wall.

It may be sufficient to have the empty pipes and / or lines to be installed the outside of the tubular interior to be retracted or inserted to fix clothing along the length of the surface at points so that this when installing the tubular inner lining in a fixed assignment these remain. Such a point-like attachment is also directly on site during the installation of the tubular inner lining with simple means possible so that the individual pipes or lines to be installed depending on the Be may be directly attached to the pipe while the tubular inner lining is being pulled in be fixed.

If a hose is pulled into the sewer pipe, it should be made of Fe reasons of rigidity, to act a fabric tube, being a glass fiber tube is to be preferred. Furthermore, a hose with a curable resin can be used as a hose impregnated, textile fabric and / or scrim hose can be used. As a resin  can be used here under UV radiation or heat hardens, then the hose pressed against the duct wall under pressure to solidify. Because the resin has a sticky property before it cures a film should be placed on the outer and / or inner surface of this hose Tubular shape are applied so that the tube walls, in particular even if the hose is folded into the sewer pipe is pulled, do not stick together.

Especially when such a tubular inner lining is used should be, which is inherently stable, d. H. which are not under pressure after moving in brought to their final shape and then solidified can be beneficial be the tubular inner liner when inserted into the sewer pipe from Bah inner material spirally, dimensionally stable. This is done in an access shaft an appropriate machine arrangement is introduced and the web material is closed fed to this machine as an endless path. This path then becomes in the machine spirally wound and the individual longitudinal edges lying against each other this spiral shape are connected with each other by suitable means, for example by flanging or welding. The spiral tube is then continuously in the sewer pipe advanced, while at the same time installing the on the outer wall cable and / or the empty pipe to be installed is introduced. The paving material that can be used to form the spiral tube be a metal sheet or a plastic sheet.

Another option that is preferable under certain circumstances is that that a plastic tube is used as the tubular inner lining, the pipe wall cross section as a folded profile in the existing sewer pipe drawn and then using a heated medium under internal pressure is deformed back to the original pipe cross section.

A tight fit of a dimensionally stable pipe that covers the tubular inner lining dung to achieve on the inner wall of a sewer pipe can be a process be an advantage when using a plastic tube as the tubular inner lining is used, the pipe cross-section before moving into the existing channel tube mechanically reduced in size by extrusion and again after pulling in  by removing the tension to the original pipe cross section ent is stretched. This measure ensures that the tubular inner lining then lies tightly against the wall of the sewer pipe and thus between the Outer wall of this plastic pipe and the inner wall of the existing sewer pipe retracted empty pipes and / or lines are kept tight.

The subsequent installation of the lines and / or empty pipes in existing Ka nalrohre, in sewer pipe systems or networks, or the like, is preferred by so-called manholes or other, easily accessible places from pre taken. In the area of these installation accesses, the between the tubular lining and the existing sewer pipe and / or empty pipes with their ends in a distribution and / or junction box leads to them later in the area of these junction boxes network or to an existing communication network or an electrical network connect; The same applies to empty pipes, which are then connected to the junction boxes common, lines, such as data communication lines, pulled can be.

Further details and features of the invention result from the following the description of exemplary embodiments with reference to the drawing. In the drawing shows:

Fig. 1A is a cross-section through a misplaced sewer pipe with a recessed guide therein th tubular inner liner in a folded state with the on top of the already laid pipes and / or conduits,

FIG. 1B, the channel tube of FIG. 1A with angepreßter on the inner wall tubular inner liner,

Fig. 2 is a schematic view for explaining the installation, the tubular inner liner, as provided in FIGS. 1A and 1B represent

Fig. 3A, 3B show cross sections through a misplaced sewer pipe with two different process steps of arranging an inner liner, which is first introduced in the deformed state (Fig. 3A),

Fig. 4A is a schematic representation of the introduction of pipe sections as an inner lining with arrangement of empty pipes or lines to be installed thereon, and

FIG. 4B is a cross section through the channel of Fig. 4A with threaded pipe sections

Fig. 5 is a schematic representation illustrating the structure of a communication network using the procedure according to the invention.

In order to install sewer pipe, pipes and / or empty pipes 2 in an existing, laid sewer pipe 1 , for example a sewage, as can be seen in FIG. 2, a hose 3 folded together to form a flat web with respect to its cross section withdrawn from a supply roll 4 and lowered over a feed roller 5 into a supply shaft 6 which runs perpendicularly between the road surface 7 and the sewer pipe 1 or a channel 8 . This hose 3 can be a fabric and / or lay-up hose which is impregnated with a resin, so that this hose 3 or the web folded from it can be handled easily, since it is flexible. As this hose 3 runs in, lines or flexible empty pipes are unwound from supply rolls 11 , for example stored in a supply truck 9 , guided over a deflection roll 10 and brought together with the folded hose. In the area of the inlet roll 5 , these lines and / or empty tubes 2 can be fixed point by point on the top of the folded hose 3 , so that these lines / empty tubes 2 cannot move. The hose 3 together with the lines / empty pipes 2 is in the shaft 6 , from which the channel 1 is easily accessible, pulled into the channel 1 , for example by means of a pulling rope in the direction of arrow 12 . The hose 3 is then pulled into the channel to another access point, not shown in FIG. 2, for example a further shaft, so that the end is accessible there. The hose 3 with the lines / empty pipes 2 on the upper side thereof then lies on the bottom of the sewer pipe 1 , as indicated by the broken line 13 in FIG. 2 or shows the cross-sectional view of the sewer pipe of FIG. 1A. The hose 3 is then separated from the supply roll 4 and sealed airtight at its two open ends. Compressed air is then supplied via at least one of these closed ends, for example via a compressor installed on the truck 9 , the hose 3 is inflated and thereby pressed against the inner wall of the sewer pipe 1 . As a result, the line / empty pipes 2 come to rest on the upper side of the sewer pipe 1 , as shown in FIG. 1B. In this on the inner wall of the sewer pipe 1 lying positioning of the hose 3 is then, depending on the type of hose 3 used , this solidified; for example, if the hose 3 is one that is impregnated with a thermosetting resin, the inside of the hose 3 is heated to cure the resin, or if the resin is a resin curing under UV radiation, the inside of the tube 3 is irradiated by means of a suitable radiation device with infrared radiation. After the hose 3 has hardened, the internal pressure can be removed. The lines and / or empty pipes 2 are then inserted and fixed in a transfer station 14 , which is fastened to the wall of the shaft 6 in an easily accessible manner. The ends of the hose 3 can then be suitably fastened in the region of the transition from the sewer pipe 1 to the shaft 6 , so that the space between the wall of the sewer pipe 1 and the outside of the hose 3 is sealed. The duct 1 is thus, as shown in FIG. 1B, provided with a smooth inner lining, with simultaneous protection and simultaneous sealing of the lines or empty pipes 2 which bear against the inner wall of the sewer pipe 1 . In empty pipes 2 , which are installed between the sewer pipe 1 and the hose 3 , later required lines, for example data communication lines in the form of optical fiber cables, can be drawn in from the transmission station 14 .

As can be seen from FIGS. 1 and 2, this method for the subsequent installation of lines and / or empty pipes in existing sewer pipes, sewer pipe systems or networks is a very flexible and universally usable method of using existing sewer pipe systems to expand communication networks.

While the method for installing lines and / or empty pipes 2 in existing sewer pipe systems using a flexible, folded hose 3 has been described above, a cross section of a sewer pipe 1 is shown in Fig. 3A, in which a longitudinally folded pipe profile a deformed plastic tube is shown, which is seen with its edges, seen in cross section, inwardly ge, ie the two edges are folded down and facing each other. Such a deformed tube, for example made of a plastic material, shows a certain dimensional stability in the folded state, as shown in Fig. 3A. Lines / conduits 2 are in turn arranged and fixed on the top of this folded hose 3 , so that they point to the upper sewer pipe wall. After this hose 3 is suitably positioned in the sewer pipe 1 , the hose is deformed back to the original pipe cross section by means of a heated medium and under internal pressure, so that it lines the inside of the sewer pipe 1 and at the same time the line / empty pipes 2 against the inner wall of the sewer pipe 1 presses, as shown in Fig. 3B.

While the method using a hose as a tubular inner lining has been described above, a schematic view of a sewer pipe 1 , which extends between two shafts, is shown in FIG. 4A. In contrast to the procedures described above, in the Dar position of FIG. 4A, individual pipe sections 16 are lowered in one shaft 3 and are pushed in sections into the sewer pipe 1 by means of a pushing device 17 . Here, the individual pipe sections 16 are inserted into one another, welded to one another or screwed together, so that they are connected to one another. At the same time 16 INTR empty pipes 2 are gen on top of these pipe sections / attached and ben pre scho together with the pipe sections 16th These lines / empty pipes 2 can be fed directly to a storage vehicle as shown in FIG. 2. After the pipe sections 16 have penetrated as far as the second shaft 3 , the lines / empty pipes 2 are in turn inserted and fastened into a transfer station 14 . The required length for the lines / empty pipes can be left as soon as the first pipe section 16 is inserted into the channel 1 , or these lines or empty pipes can be extended to the transfer station 14 . If desired, insulation material 15 can then be injected into any remaining spaces or creating a ring space, as shown in FIG. 4B.

In Fig. 5 the schematic structure of a network is shown using the above-mentioned method. For example, to build a new information transmission network, preferably already installed main sewer pipes 1 of a sewer pipe network, for example for wastewater disposal, are used to insert a plurality of individual pipes / empty pipes 2 between transfer stations 14 using a tubular inner lining, for example a hose 3 or of pipe sections 16 , as described above, to be installed. Over existing house connections, ie Hausan circuit sewer pipes, the füh ren the waste water from a house 18 to the sewer pipe 1, also denoted by the reference numeral 1, are drawing a tubular inner liner, preferably in such a case, the tubes 3 are introduced, and between a such hose and the sewer pipe 1 jammed. A transfer station 14 is then provided in the house 18 in order to couple this house to the newly laid network. In the area of the transition from the house connection sewer pipe 1 to the main sewer pipe 1 , a separate connection point 19 can be provided in order to make the necessary branches of the lines / empty pipes 2 to the house 18 there.

Claims (21)

1.Procedure for installing at least one line and / or an empty pipe for pulling a line, in particular lines for information transmissions, in installed sewer pipes, in sewer pipe systems or networks and the like, in particular in sewer pipes or ventilation pipes, along the inner wall thereof, characterized in that a tubular inner lining is inserted and / or drawn into the installed sewer pipe, at least one flexible empty pipe and / or a line being arranged in the area of the outer surface thereof. 2. The method according to claim 1, characterized in that as the inner lining an irreversibly deformable hose is pulled in. 3. The method according to claim 2, characterized in that the hose in the Sewer pipe is drawn in, the hose for lining the sewer pipe  by filling the interior wall with a gaseous or liquid medium of the sewer pipe and irreversibly solidified against the inner wall becomes. 4. The method according to claim 1, characterized in that the empty pipe and / or the pipe on the outer surface of the tubular inner lining application will be applied. 5. The method according to claim 4, characterized in that the empty pipe and / or the line is applied to the upper area of the outer surface becomes. 6. The method according to claim 1, characterized in that a tubular In inner lining is used, the empty pipe and / or the pipe in the Wall integrated contains. 7. The method according to claim 1, characterized in that the empty tube and / or the line at least in spots on the outer surface of the tube shaped inner lining along its length is (are) fixed. 8. The method according to any one of claims 1 to 5, characterized in that for Installation of the tubular inner lining, the empty pipe and / or the Lei tion ready and when pulling the tubular inner lining in the sewer pipe, the empty pipe and / or the line applied to the hose will become). 9. The method according to claim 1, characterized in that as a tubular In inner lining is used, the cross-sectional circumference approx corresponds to the cross-sectional circumference of the sewer pipe. 10. The method according to claim 2, characterized in that as a hose Fabric hose is used. 11. The method according to claim 10, characterized in that as a fabric a glass fiber tube is used.   12. The method according to claim 10, characterized in that as a hose textile fabric and / or scrim impregnated with a hardenable resin hose is used. 13. The method according to claim 12, characterized in that the outer and / or the inner surface of the hose with a film in the form of a hose is covered. 14. The method according to claim 11, characterized in that as a resin with ul traviolet radiation curable resin is used. 15. The method according to claim 2, characterized in that the hose as an egg ne essentially flat sheet folded and drawn into the respective sewer pipe becomes. 16. The method according to claim 1, characterized in that a Da as a line telecommunications line is pulled in. 17. The method according to claim 1, characterized in that the tubular In inner lining is formed by individual pipe sections that work together when connected to the sewer pipe. 18. The method according to claim 1, characterized in that the tubular In inner lining made of spiral sheeting when inserted into the sewer pipe shaped, dimensionally stable. 19. The method according to claim 1, characterized in that as a tubular In a plastic tube is used, the tube wall cross cut and folded into the existing sewer pipe as a folded profile closing by means of a heated medium under internal pressure original pipe cross section is deformed. 20. The method according to claim 1, characterized in that as a tubular In a plastic pipe is used, the pipe cross section of which is used mechanically by pulling it into the existing sewer pipe  reduced in size and after moving in again by removing the tension is relaxed to the original pipe cross section. 21. The method according to claim 1, characterized in that after laying the Empty pipe and / or the line whose respective ends in a distributor or Connection box are performed, which in the area of an access point to the sparse sewer pipe is arranged.