EP3622212A1

EP3622212A1 - Device for renovating damaged line walls, comprising a heating device for quickly curing the renovation compound

Info

Publication number: EP3622212A1
Application number: EP18729025.9A
Authority: EP
Inventors: Christian Noll
Original assignee: Pipetronics GmbH and Co KG
Current assignee: Pipetronics GmbH and Co KG
Priority date: 2017-05-09
Filing date: 2018-05-09
Publication date: 2020-03-18
Also published as: WO2018206055A1; US11287075B2; US20210148501A1; DE102017109980A1

Abstract

The invention relates to a device (1) for renovating damaged line walls in the region of the connection of an auxiliary line to a main line, comprising a movable support element, wherein a cover element (3) and an expandable element (5) are arranged on the support element. In the non-expanded state, the expandable element is positioned or can be positioned in the auxiliary line at least partly in or through a first recess (7) in the cover element, and in the expanded state, the expandable element lies against the wall of the auxiliary line such that the cover element and the expandable element together form a shell. The cover element has a second recess (11), through which a curable viscous renovation compound can be introduced from a storage device into the space between the shell and the main and auxiliary line walls adjoining the shell by means of a transport means. The device comprises a heating device which is integrated into the cover element, the storage device, and/or the transport means at least in the region of the second recess and/or is operatively connected to the cover element, the storage device, and/or the transport means at least in the region of the second recess.

Description

Apparatus for remediating defective conduit walls with a heater for faster curing of the refurbishment mass

The present invention relates to a device for refurbishing defective line walls in the region of the connection of a secondary line to a main line.

There are known devices for such a refurbishment in the prior art in which a self-propelled or with ropes in the channel movable sewer rehabilitation robot a support device for

includes various remediation tools. These tools, in particular a spatula device, can be controlled after positioning the robot in the damaged area from outside the channel.

For the repair of damaged areas in the region of the connection of a secondary line to a main line devices are also described in the prior art, in which the can be arranged in the main channel Kanalsanierungsroboter forms a support device for an attachable in the region of the secondary channel connection to the wall of the main cover.

The cover in turn carries an insertable into the secondary line, expandable expansion body, also called bubble. In the expanded state of this expansion body is against the wall of the secondary line and then forms together with the cover from a formwork, which supports an introduced in this form viscous sealant before curing the same. After curing, the expansion body is contracted and the cover removed and the sealant forms the

restored, previously defective duct wall areas. Such a cover according to the prior art, also as Formwork cuff referred to, is in one embodiment

basically known from WO 1995027167A1.

In principle, there is the possibility to supply the used by the devices of the type described viscous curable sealant from the outside of the channel via hoses or other movable lines the sewer rehabilitation device.

However, this solution is not only expensive, but also in many ways

Disadvantageous. The tightening of lines restricts the

Maneuverability of the device in the channel considerably, especially as often multiple defective and sites to be rehabilitated occur in a channel and the damaged areas can be located more than 100 meters from the introduction of Kanalsanierungsroboters. Therefore, the supply lines for the filler or sealant must be very long.

The tough renovation compound to push through such long lines prepares considerable problems. Tough, especially tixotropic media cause a speed-dependent pressure loss with every movement in the line. The numerical values for viscosity and

Shear stress in the remediation mass varies greatly with the

Line geometry, the temperature and the exact state of the often granular shares containing refurbishment.

Especially in working with formwork devices is the

Compliance with certain pressure ranges when pressing the

Remediation compound particularly important. The pressure must always be at least high enough to ensure that the

Remediation all the defective channel wall areas completely fills. However, the pressure must not be so high that it loads the damaged and brittle channel wall areas too high. Since the operator usually sits dozens of meters away, this is usually so overwhelmed, the delivery pressure for the refurbishment set so that this mass with the required pressure in the area of the spatula or with a cover and a

Dehnkörper formed formwork arrives.

From the prior art, therefore, solutions are known to dispense with the use of lines for supplying the remediation masses.

From DE 36 18 963 equipped with a cover and Dehnkörper channel restoration device is known, in which the remediation compound is arranged around the initially slack Dehnkörper around and then retracted together with this in the secondary channel. At the

Widening of the expansion body presses this the remediation mass radially against the damaged channel wall.

This has the disadvantage that only remediation compounds with a high

Pot life can be used. The term "pot life" refers to the processing time of reactive materials. It is therefore the time between the mixing of a multi-component substance and the end of its processability, ie the period in which the substance can still be taken out of the pot and processed.

As a remediation usually two-component adhesive

be used, therefore, in a solution according to DE 36 18 963 the time to curing must be set with many securities to ensure that the formwork is set before the end of the pot life.

Therefore, it has become known in the art alternatively, the

Restoration mass in cartridges, cylinders and by means of pumps emptied storage containers to arrange directly on the rehabilitation robot.

The problem here, however, is that this is the necessary pot life

extended. When using storage containers begins the

Curing of the remediation mass at the latest with the filling of the same and thus already before the introduction of the rehabilitation robot in the line to be rehabilitated.

It should be noted that the attachment of the formwork more

Work steps includes. First, the cover in the

Main line expands, then the elongated body inserted through a recess in the secondary line and also expanded by a small needle-shaped connecting element has to be inserted into the valve of the expansion body. Subsequently, a closure in the cover must be opened, and there the outlet of a conduit for transporting the remediation compound in the space between the formwork formed by the cover and the expansion body and the

Existing walls are pressed.

Each of these steps is potentially error-prone and may need

be repeated several times, so that the pot life must be designed with high security for such operating errors. Accordingly, the curing time of the remediation mass is long until the formwork can be removed again.

However, it is desirable to minimize the time period in which the formwork must remain in the conduit. This reduces labor costs as well as the cost of keeping the sewer rehabilitation robot available. A disadvantage of the known devices, it is thus that, although by dispensing with external supply lines of remediation the problems of proper pressurization can be minimized, but a long curing time is necessary because the entrained remediation must have a sufficiently sized pot life.

Therefore, the object of the present invention was to overcome the disadvantages of the prior art and in particular to provide a device that allows a faster and more reliable rehabilitation of lines, with the fastest possible curing of the

Restoration mass is enabled.

This object is achieved by a device for refurbishing

defective duct walls in the region of the connection of a secondary line to a main line, comprising a mobile

Carrier element, wherein on the support member, a cover member and an expandable expansion body is arranged, and wherein the expandable expansion body in the unexpanded state at least partially positioned or positionable in one or by a first recess in the cover in the secondary line and in the expanded state on the wall the secondary line is applied, so that the

Covering element and the expansion body together form a formwork, and wherein the cover member has a second recess, introduced by means of a transport from a storage device, a viscous, curable restoration compound in the space between the formwork and adjacent to the formwork walls of the main and secondary line is, wherein the device is a

Heating device includes, in the cover and / or in the Aufbwahrungseinrichtung is integrated and / or is in operative connection with the cover and / or the Aufbwahrungseinrichtung.

Under a support member is to be understood in particular an element that is movable on wheels or chains and has an integrated drive. As an alternative to an integrated drive, the carrier element can also be moved by means of cables, cables and the like in the line.

Under a cover is to be understood an element which can cover the inner wall of the main line such that between the cover and the underlying space a defined cavity is formed, which is tight against the refurbishment and prevents penetration thereof into the main line.

Often it has proved to be advantageous that the cover is provided in the form of a hollow cylinder whose inner diameter is variable. So is the hollow cylinder with reduced

Inner diameter moved in a transport state to the defective location by means of the support member and then expanded there, so that it rests firmly against the inner walls of the main line.

Under a Dehnkörper is a variable size element

be understood, which is usually based on plastic or rubber and in principle resembles a balloon. In addition, the expansion body comprises, in particular, a valve in order to allow expansion with compressed air and, when the valve opens, subsequent contracting.

The Dehnköper is doing in a first recess in the

Cover arranged and expands into the secondary line.

Together, the cover and the expansion body form a Formwork, which, at least approximately, corresponds to the inner diameter of the lines.

Over a second recess in the cover can subsequently the refurbishment in the closed by the shuttering

Cavity be pressed. After curing of the remediation mass, the formwork is removed, in which the expansion body is contracted and removed from the first recess of the cover. Subsequently, the cover itself is contracted to leave the main line

to be removed.

By a heater according to the invention can thereby

Curing time of the refurbishment mass can be significantly reduced.

According to the invention, the heating device can be integrated in the cover element and / or in the transport means at least in the region of the second recess or be in operative connection with this region.

Thus, the remediation compound may already be in the

Means of transport, usually a hose, preheated. Alternatively or additionally, a heating device can also be integrated into the formwork and provide heating power during the entire hardening process in order to accelerate it.

The invention is based on the surprising finding that the disadvantages of the prior art can be overcome that a refurbishment with sufficiently high pot life and thus long curing time can be used, and at the same time by means of the heating power provided a rapid curing is ensured , According to one embodiment it can be provided that the

Microwave generating device, a magnetron, which generates microwaves and a radiation antenna, for blasting through the

Magnetron generated microwaves in the space between the formwork and adjacent to the formwork walls of the main and secondary line and / or in the storage device, wherein the radiation antenna preferably by the cover

formed, comprises of this or is in operative connection with this.

It has proved to be particularly advantageous that heating the

Renovation mass by means of microwave radiation takes place. It may be particularly advantageous if the remediation after the

Introducing is heated in the space between the formwork and adjacent to the formwork walls of the main and secondary line, being used as a radiation antenna on the cover. It may be advantageous that the

Cover element itself forms the radiation antenna, or that the radiation antenna is at least partially integrated in the cover. Also alternatively preferably, the radiation antenna can be in operative connection with the cover.

It can be provided in particular that the heating device in the form of a heating hose, a radiation source, in particular an infrared heater and / or a

Microwave generating device, and / or an electric heater is formed.

Under a heater should in principle any

Heat generating device to be understood, whose function is primarily in the generation of provision of heat energy. Not as Heating device are in the context of the invention while devices that produce so-called waste heat, such as lamps,

Electric motors and the like.

The preferred heaters have to be as special

proven advantageous for heating the refurbishment.

Also, it may be preferred according to the invention that the

Storage device is arranged on the support element.

As already stated, it is known in the art that the

Storage device for the refurbishment compound is arranged outside the line system. The related disadvantages have been described. However, it has been shown that a direct integration of the storage device on the support element allows a particularly compact design and in particular the waiver allows a second car or robot.

It may be provided that the refurbishment of the

Storage device can be introduced by a pressurization in the interior of the storage device and / or by a pumping device via the transport in the space behind the formwork.

The remediation mass must be pressed with a respective individual minimum pressure in the cavity defined by the formwork. Furthermore, the pressure must not be so high that the formwork can no longer fulfill its sealing function. To be able to adjust such a defined pressure have become

Pumping devices, such as peristaltic pumps or piston pumps proved to be particularly suitable. Alternatively, however, it may also be possible by means of a pressurization within the Storage device to allow a flow of redevelopment compound in the said cavity.

In one embodiment of the present invention, it may

Be advantageous that the cover in a transport state has a smaller inner diameter than in an operating condition, and in particular in the form of a formwork cuff is formed.

The formation of the cover with different

Inner diameters are advantageous and known from the prior art. In particular, an embodiment of the cover element in the form of a shuttering collar has the advantage that the cylindrical cover element can be transported very well in the line and in the

Operating state is very securely fixed, since it is within the

Align main line independently and can be locked by the contact pressure in the desired position, without the need for additional tools are used.

Furthermore, according to one embodiment, it has proved to be advantageous that a compressed air generating element, in particular in the form of a compressor and / or a compressed air tank, is included in order to expand the expansion body by means of compressed air.

It can be provided in particular that the expansion body a

Valve, which is arranged in the region of the first recess and / or in the interior of the cover, wherein a movable at least in a spatial axis Randaus boom for guiding a

Transport line for the compressed air is comprised by the carrier element, wherein the transport line on the opposite side of the compressed air generating element comprises a connecting element, which is engageable or is operatively connected to the valve of the expansion body, by means of the compressed air generating element with the expansion body

Compressed air to pressurize and expand.

It may further be preferred that the

Connecting element is designed and adapted to actuate the valve of the expansion body for a contracting of the expansion body.

For expanding and contracting the expansion body is preferably resorted to a valve integrated in the expansion body. The valve itself is by means of the connecting element either with pressure

acted upon or overpressure in the expansion body can by

Make active connection bring the connecting element with the valve from the Dehnkörper be drained.

In order to expand the expansion body, recourse is preferably made to compressed air according to the invention. The compressed air is either generated locally or carried in a compressed air tank. To that

To connect connecting element with the valve of the expansion body, it has also proven to be vorteihaft that is used on a movable in at least one spatial axis boom, at whose loose end is the connecting element. In this case, the connecting element is connected to the transport line for compressed air, which in turn is connected to the compressed air generating element.

It may be advantageous that the boom by means of at least one actuator, in particular an electric motor in which at least one spatial axis, in particular in two, preferably in three spatial axes is movable.

A movement of the boom by means of an actuator, such as an electric motor or a hydraulic or pneumatic Cylinder is particularly advantageous, since the boom is thus provided in the form of a robot arm, which can be remotely controlled by a user.

It may be particularly preferred that a camera is included, which is arranged on the carrier element, wherein the camera is arranged adjacent to the boom.

In the prior art, cameras are mounted on a cantilever extending outside the self-supporting member. However, it has been shown that due to the visibility, the distortion from the outside perspective and the lighting conditions

in particular the relatively small valve of the expansion body and a

Only very complex locking device for the second recess can be approached with the boom by a user. An arrangement of a camera, which according to the present invention should also comprise a system of cameras or image recording devices adjacent to the cantilever, overcomes these disadvantages. Furthermore, a camera according to the invention can be brought into operative connection with a light source or stand in order to allow an improved display of the objects to be manipulated by the user.

According to one embodiment of the present invention, the viscous, curable refurbishment mass is an epoxy resin and / or the refurbishment composition consists of a one- or two-component resin and / or for a curing of the epoxy resin a temperature of at least 100 °, 90 °, 80 °, 70 °, 60 °, 50 °, 40 °, 30 °, 20 ° or 10 ° C is necessary.

Two-component resins have proven to be particularly advantageous

Sealing compounds proved. Also, choosing an on or Two-component resin with a high cure

Temperature be advantageous, since then only a cure occurs when the heater according to the invention is in operation. Thus, any pot life can be made possible.

Also, it may be provided according to an embodiment of the present invention, that the second recess by means of a

Closing element is closed, in particular the

Closing element can be opened and closed by means of the carrier element and / or a further carrier element, wherein the further

Carrier element is movably mounted in at least one, in particular two, preferably three spatial axes.

Such a closure element is advantageous, since it thus prevents the not yet cured sealing compound from penetrating through the small but present second recess.

Finally, it can be provided that the means of transport with the

Support element or the further support member is connected so that the storage container opposite end of the

Transport means on or at least partially in the second recess can be arranged or angeorndet to the remediation compound in the space between the formwork and adjacent to the formwork

Walls of the main and secondary line bring.

The invention also provides a method for remediating defective line walls in the area of connecting a secondary line to a main line, comprising the following steps, in particular in this order: a) providing a device according to one of the preceding

Claims; b) moving the carrier element to the area to be rehabilitated; c) expanding the cover member until it abuts the inner wall of the main conduit; d) positioning the expansion body through the first recess of the

cover; e) expanding the expansion body; f) positioning the transport means on the second recess of the cover; g) heating the cover member and / or the means of transport before, during and / or after the transport of the remediation mass in the space between the formwork and the adjacent to the formwork walls of the main and secondary line.

Finally, the invention provides a use of a

Inventive device for remediation of damaged line walls in the region of the connection of a secondary line to a main line.

Further features and advantages of the invention will become apparent from the

In the following description, embodiments of the invention will be described by way of example with reference to schematic drawings, without thereby limiting the invention.

FIG. 1 shows a schematic view of a section of a

Device according to the invention and an inventive

Formwork system in a pipe system in the transport state in Cut;

FIG. 2: a schematic view of a section of a

Device according to the invention and an inventive

Formwork system in a line system in the operating state in section; and

FIG. 3: a schematic view of a section of a

Device according to the invention and an inventive

Formwork system in a pipe system after a renovation in the cut.

In the figures, a device 1 according to the invention is shown only partially. Not shown, for example, a chassis and a storage container for the refurbishment. In Figure 1, a transport state of a device according to the invention is shown schematically. The device 1 comprises a cover element 3 and an expansion element 5. The cover element 3 is designed in the form of a shuttering collar and the expansion element 5 in the form of a bubble. The expansion element 5 is partially already arranged in a first recess 7. A closure element 9 closes a second recess 11, through which the remediation compound can be introduced into the cavity 13 closed by the expansion body 5 and the cover element 3, in order to rehabilitate the defective location in the conduit system. A camera 15 and a boom 17 are arranged on a support arm 19 of the only partially shown first device 1.

As can be seen in Figure 1, the cover 3 is arranged at a distance from the inner wall of the main line and the expansion body 5 is already in the first recess 7. Thus, a simple Transport of the two formwork elements to be rehabilitated

Section of the pipe system allows.

FIG. 2 shows the operating state of the device according to the invention. In this case, the cover 3 is expanded, so that it rests firmly against the inner wall of the main line. Similarly, the expanded expansion body 5 in the secondary line closely to the inner wall of the

Secondary line adjoining. The thus closed cavity 13 ^' is filled by the exposed by opening the closure member 9, the second recess 11 by means of the boom 17 with the remediation compound. Subsequently, the closure element 9 is closed and the

Restoration mass can harden.

In order to accelerate the curing, a heater, not shown, is used according to the invention. This can, for example, be arranged directly in the cover element 3 in the region of the second recess 11, or integrated into the means of transport for the refurbishment mass. Also, it may be that the

Heating device is in operative connection with the cover or the transport and is not directly integrated into this.

After curing, the expansion element 5 is contracted and also reduces the outer diameter of the cover 3, so that the formwork formed from these two elements can be removed. The remediation compound 13 ^" cured at this time and the

Renovation of the line thus successfully completed.

The features of the invention disclosed in the foregoing description and claims may be essential both individually and in any combination for the realization of the invention in its various embodiments.

Claims

claims

Anspruch [en] A device for rehabilitating defective duct walls in the region of connecting a secondary line to a main line, comprising a mobile carrier element, wherein a cover element and an expandable expansion element are arranged on the carrier element, and wherein the expandable expansion element in the unexpanded state at least partially in one or through a first recess in the cover in the

Secondary line is positioned or positioned and rests in the expanded state on the wall of the secondary line, so that the cover and the expansion element together form a formwork, and wherein the

Covering element has a second recess through which by means of a transport from a storage device a viscous,

hardenable remediation compound in the space between the formwork and the adjacent to the formwork walls of the main and secondary line can be introduced, characterized in that

the device comprises a heating device which is in operative connection in the cover element and / or in the storage device and / or with the cover element and / or the storage device.

2. Apparatus according to claim 1, characterized in that

the heating device in the form of an airbag, a radiation source, in particular an infrared heater and / or a

Microwave generating device, and / or an electric heater is formed.

Device according to claim 2, characterized in that the microwave generating device comprises a magnetron which generates microwaves and a radiation antenna for irradiating the microwaves generated by the magnetron into the space between the formwork and the walls of the main and secondary lines adjacent to the formwork and / or into the storage device, the radiation antenna preferably formed by the cover, comprises of this or is in operative connection with this.

4. Device according to one of the preceding claims, characterized

marked that

the storage device is arranged on the support element.

5. Device according to one of the preceding claims, characterized

marked that

the remediation mass from the storage facility by a

Pressurization in the interior of the storage device and / or can be introduced by a pumping device via the transport in the space behind the formwork.

6. Device according to one of the preceding claims, characterized

marked that

the cover in a transport state a smaller

Inner diameter than in an operating condition, and in particular in the form of a formwork cuff is formed.

7. Device according to one of the preceding claims, characterized marked that

a compressed air generating element, in particular in the form of a compressor and / or a compressed air tank, is included to expand the expansion body by means of compressed air.

8. Apparatus according to claim 7, characterized in that

the expansion body comprises a valve which is arranged in the region of the first recess and / or in the interior of the cover element, wherein a movable at least in a spatial axis Randaus boom for guiding a transport line for the compressed air from the support element is included, wherein the transport line to the Compressed air generating element opposite side comprises a connecting element, which is engageable or can be brought into operative connection with the valve of the expansion body to pressurize the expansion means by means of the compressed air generating element with compressed air and to expand.

9. Apparatus according to claim 8, characterized in that

the connecting element is designed and arranged to actuate the valve of the expansion body for a contracting of the expansion body.

10. Apparatus according to claim 8 or 9, characterized in that

the boom by means of at least one actuator, in particular an electric motor in which at least one spatial axis, in particular in two, preferably in three spatial axes is movable.

11. Device according to one of claims 8 to 10, characterized in that a camera is arranged, which is arranged on the carrier element, wherein the camera is arranged adjacent to the boom.

12. Device according to one of the preceding claims, characterized

marked that

the viscous, curable refurbishment mass is an epoxy resin and / or the refurbishment composition consists of a one- or two-component resin and / or for curing the epoxy resin a temperature of at least 100 °, 90 °, 80 °, 70 °, 60 ° , 50 °, 40 °, 30 °, 20 ° or 10 ° C is necessary.

13. Device according to one of the preceding claims, characterized

marked that

the second recess is closed by means of a closure element, wherein in particular the closure element can be opened and closed by means of the carrier element and / or a further carrier element, wherein the further carrier element is movably mounted in at least one, in particular two, preferably three spatial axes.

14. The apparatus according to claim 13, characterized in that

the transport means is connected to the carrier element or the further carrier element, so that the storage container opposite end of the transport means is arranged or angeorndet at least partially in the second recess to the refurbishment in the space between the formwork and adjacent to the formwork walls of the To introduce main and secondary line.

15. A method for remediating defective duct walls in the area of connecting a secondary line to a main line, comprising the following steps, in particular in this order: a) providing a device according to one of the preceding claims; b) moving the carrier element to the area to be rehabilitated; c) expanding the cover member until it abuts the inner wall of the main conduit; d) positioning the expansion body through the first recess of the

cover; e) expanding the expansion body; f) positioning the transport means at the second recess of the

cover; g) heating the cover element and / or the means of transport,

during and / or after the transport of the remediation mass in the space between the formwork and the adjacent to the formwork

Walls of the main and secondary line.

16. Use of a device according to one of claims 1 to 14 for a renovation of defective line walls in the region of the connection of a secondary line to a main line.