METHOD AND DEVICE FOR THE RECONSTRUCTION OF A PIPE SECTION OF A PIPELINE SYSTEM

Abstract

In order to further improve a method and a device for rehabilitating a pipe section, wherein the rehabilitation device has at least one tube-shaped inliner for sealing damage to the pipe section and a heating element, in such a way that the rehabilitation may be carried out more easily, safer, and more economically, it is proposed to design the heating element as a tube-shaped and electric heating element and to arrange it essentially across an entire length of the inliner arranged within the pipe section, and to cure the inliner essentially along the entire length in one step by means of the tube-shaped electric heating element.

Claims

1. A method for rehabilitating a pipe section of a pipeline system using a rehabilitation device, wherein the rehabilitation device has at least one tube-shaped inliner for sealing damage to the pipe section and a tube-shaped electric heating element, wherein the method has at least the following steps: a) Inserting the rehabilitation device into the pipeline system (110), wherein the inliner and the tube-shaped heating element are positioned in the pipe section, and b) Supplying compressed air, so that the tube-shaped inliner is applied to an inner wall of the pipe section, and c) Activating the tube-shaped electric heating element for curing the inliner, by which means damage to the pipe section is sealed, wherein the tube-shaped electric heating element is arranged in step a) essentially across an entire length of the inliner arranged within the pipe section and the inliner is cured in step c) essentially along its entire length in one step.

2. Method according to claim 1, wherein the rehabilitation device additionally has a calibration tube, which is positioned in the pipe section in step a), together with the inliner and the tube-shaped electric heating element, wherein the inliner is arranged around the calibration tube.

3. Method according to claim 1, wherein the rehabilitation device is inserted into the pipe section by means of a sliding arrangement.

4. Method according to claim 3, wherein the sliding arrangement is fixed on a first end of the inliner in its interior prior to step a).

5. Method according to claim 1, wherein the tube-shaped electric heating element is fixed on a first end of the inliner in its interior prior to step a).

6. Rehabilitation device for rehabilitating a pipe section of a pipeline system, wherein the rehabilitation device has at least one tube-shaped inliner for sealing damage to the pipe section and a heating element, wherein the heating element is designed as tube-shaped and is arranged with a plurality of electric heating means essentially across an entire length of the inliner arranged in the pipe section.

7. Rehabilitation device according to claim 6, wherein the tube-shaped electric heating element is fixed on a first end of the inliner and or on a first end of a calibration tube of the rehabilitation device.

8. Rehabilitation device according to claim 6, wherein the tube-shaped electric heating element is designed to be flexible and/or invertible.

9. Rehabilitation device according to claim 6, wherein the tube-shaped electric heating element has a flexible tube carrier unit, wherein the electric heating means are arranged on the tube carrier unit and/or integrated into the same.

10. Rehabilitation device according to claim 6, wherein the tube-shaped electric heating element is integrated into a material of a calibration tube of the rehabilitation device and/or is arranged on the calibration tube.

11. Rehabilitation device according to claim 6, wherein the rehabilitation device has a sliding arrangement, with which the inliner and/or a calibration tube of the rehabilitation device may be inserted into the pipe section.

12. Rehabilitation device according to claim 11, wherein the tube-shaped electric heating element is connected to the sliding arrangement and/or is fixed on the sliding arrangement and/or is integrated into the sliding arrangement.

13. Rehabilitation device according to claim 6, wherein the rehabilitation device for rehabilitating a connecting pipe of the pipeline system has a calibration tube designed as a support bladder, wherein the support bladder has a first section for arrangement in a main pipeline section of the connecting pipe and a second section for arrangement in a secondary pipeline section of the connecting pipe.

14. Rehabilitation device according to claim 6, wherein the tube-shaped inliner is designed as a shortliner to rehabilitate a short pipe of the pipeline system and/or has a glass fiber laminate impregnated with resin.

15. Rehabilitation device according to claim 6 to 14, wherein the rehabilitation device is designed for rehabilitating a pipe section according to a method according to claim 1.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The invention is subsequently explained exemplarily by way of preferred embodiments.

[0033] As schematically shown in:

[0034] FIGS. 1a, 1b: a rehabilitation device for rehabilitating a pipe section;

[0035] FIGS. 2a, 2b: another rehabilitation device for rehabilitating a pipe section;

[0036] FIGS. 3a, 3b: a rehabilitation device with calibration tube and sliding arrangement;

[0037] FIGS. 4a, 4b: a rehabilitation device with calibration tube and sliding arrangement;

[0038] FIG. 5: a shortliner rehabilitation device with calibration tube and sliding arrangement;

[0039] FIG. 6: another shortliner rehabilitation device with calibration tube and sliding arrangement;

[0040] FIG. 7: a rehabilitation device with a calibration tube designed as a support bladder for rehabilitating a connecting pipe of a pipeline system; and

[0041] FIG. 8 another rehabilitation device with a calibration tube designed as a support bladder for rehabilitating a connecting pipe of a pipeline system.

DETAILED DESCRIPTION OF THE INVENTION

[0042] FIGS. 1a and 1b show a rehabilitation device 100 for rehabilitating a pipe section 111 of a pipeline system 110, wherein pipe section 111 has a closed end (not shown in detail in FIGS. 1a and 1b).

[0043] By means of an inversion device 112, starting from the outlet pipe 114 of inversion device 112, a fabric tube 115, which also functions as a pressure tube, is inserted into inversion duct 116 and fitted on the inversion bracket 114. Rehabilitation device 100 was inserted into pipeline system 110 and positioned in pipe section 111 to be rehabilitated. In this embodiment, rehabilitation device 100 has a tube-shaped inliner 10, which is impregnated with resin, and a tube-shaped electric heating element 11 with a plurality of heating means 11barranged one behind the other on a tube carrier unit 11a. At the first end 14 of inliner 10, tube-shaped electric heating element 11 is connected to inliner 10 in its interior. Furthermore, inliner 10 is closed at said first end 14.

[0044] After positioning rehabilitation device 100 in pipe section 111, compressed air is supplied via inversion device 112, so that tube-shaped inliner 10 is contacted or pressed onto the inner wall of pipe section 111 to be rehabilitated. Subsequently, tube-shaped electric heating element 11 is activated so that inliner 10 or the resin, with which inliner 10 is impregnated, cures and thus seals damage to pipe section 111.

[0045] Tube-shaped electric heating element 11 is hereby designed as flexible. In the example shown in FIG. 1a, heating means 11b are arranged in a net-like fashion on tube carrier unit 11a. Furthermore, tube-shaped electric heating element 11 is arranged in tube-shaped inliner 10 across its entire length so that the curing may be carried out in a single step and tube-shaped electric heating element 11 does not have to be pushed or pulled through.

[0046] A cross section through pipe section 111 to be rehabilitated with inserted rehabilitation device 100 is shown in FIG. 1b.

[0047] FIGS. 2a and 2b show another rehabilitation device 100 for rehabilitating a pipe section 111. In contrast to the example shown in FIGS. 1a and 1b, heating means 11b are arranged in a spiral on tube carrier unit 11a.

[0048] FIGS. 3a and 3b show a rehabilitation device 100 with calibration tube 12 and sliding arrangement 13. After inserting and positioning rehabilitation device 100 within pipe section 111, compressed air is supplied to calibration tube 12 via inversion device 112. Calibration tube 12 thus presses tube-shaped inliner 10 on the inner wall of pipe section 111 to be rehabilitated.

[0049] Similar to what is shown in FIGS. 1a, 1b, 2a, and 2b, tube-shaped electric heating element 11 is likewise designed to be flexible for this. In FIGS. 3a and 3b, heating means 11b are arranged in a spiral shape on tube carrier unit 11a, like in FIGS. 2a and 2b.

[0050] FIGS. 4a and 4b show another rehabilitation device 100 with calibration tube 12 and sliding arrangement 13. The design essentially corresponds to the example from FIGS. 3a and 3b. In contrast to this, however, heating means 11b are arranged in a net-like fashion on tube carrier unit 11a, as in FIGS. 1a and 1b.

[0051] FIGS. 5 and 6 show another variant of a rehabilitation device 100 with calibration tube 12 and sliding arrangement 13. In these examples, rehabilitation device 100 or its inliner 10 is designed as a shortliner for short pipes with high static and/or chemical load capacity. By this means, pipe damage in the form of points may be easily rehabilitated for the long term. Tube-shaped inliner 10 preferably has a glass fiber laminate impregnated with resin.

[0052] In FIG. 5, heating means 11b are arranged in a net-like fashion on tube carrier unit 11a, as in FIGS. 1a and 1b. In FIG. 6, heating means 11b are arranged in a spiral shape on tube carrier unit 11a, like in FIGS. 2a and 2b.

[0053] FIGS. 7 and 8 show another variant of a rehabilitation device 100 with calibration tube 12 and sliding arrangement 13. The variant shown here functions for rehabilitating a connecting pipe of a pipeline system 110. Calibration tube 12 is designed for this as a support bladder with a first section for arrangement in a main pipeline section 119 of the connecting pipe and a second section for arrangement in a secondary pipeline section 118 of the connecting pipe. Prior to inserting the support bladder into pipeline system 110, the second section may be inverted. Upon subsequent positioning of the support bladder in the connecting pipe, the previously inverted second section unfolds into secondary pope section 118 of the connecting pipe due to the supply of compressed air.

[0054] In both variants, at least one tube-shaped electric heating element 11 is provided, wherein heating means 11b are arranged essentially over the entire length of the first and second sections of the support bladder. In FIG. 7, heating means 11b are arranged in a net-like fashion on tube carrier unit 11a, as in FIGS. 1a and 1b. In FIG. 8, heating means 11b are arranged in a spiral shape on tube carrier unit 11a, like in FIGS. 2a and 2b.

LIST OF REFERENCE NUMERALS

[0055] 100 Rehabilitation device

[0056] 10 Tube-shaped inliner

[0057] 11 Tube-shaped electric heating element

[0058] 11a Tube carrier unit

[0059] 11b Heating means

[0060] 12 Calibration tube

[0061] 13 Sliding arrangement

[0062] 14 First end of the inliner

[0063] 15 First end of the calibration tube

[0064] 110 Pipeline system

[0065] 111 Pipe section

[0066] 112 Inversion device

[0067] 113 Compressed air hose

[0068] 114 Outlet pipe

[0069] 115 Textile hose

[0070] 116 Inversion duct

[0071] 117 Inversion bracket

[0072] 118 Secondary pipe section

[0073] 119 Main pipeline section