DE19900229A1 - Lining of channels and pipes (serving for conduction of various media) with renovation hoses involves use of movable energy sources for hardening of the resin impregnated hoses - Google Patents

Abstract

Method for lining horizontal channels (4) between vertical shafts (1, 2) with a renovation hose (8) incorporating at least one layer of textile material comprises lowering the hose into the shaft (1); introducing at least one energy source (21) into the hose, the rear end of the hose is closed and the hose is pulled along the channel until its final position is reached; the resin is then hardened. The method for lining horizontal channels (4) between vertical shafts (1, 2) with a renovation hose (8) incorporating at least one layer of textile material comprises: (a) the front end of the hose is lowered into the shaft (1) and introduced into the channel (4), after which it is pulled along by a traction unit (13) until its rear end is at a predetermined height (H); (b) at least one energy source (21) is introduced into the hose, the rear end of the hose is closed and the hose is pulled along the channel until its final position is reached; (c) hardening of the resin impregnated renovation hose takes place. An Independent claim is also included for an apparatus for implementation proposed method. This apparatus comprises movable energy sources in addition to hose handling and transport devices.

Description

The invention relates essentially to a method for lining horizontal channels arranged between vertical shafts are, with renovation hoses that have at least one layer from one have textile material that hardens with energy radiation baren resin is impregnated, the renovation hose by means of a Pulling element pulled into the channel and before the resin hardens, provided at both ends with closure elements, through a pressure medium the cross section of the channel is expanded, and being used for curing at least one energy source in the longitudinal direction through the expanded Rehabilitation hose is transported.

The lining of canals, to which sewers of all kinds Cross-sectional shapes count as well as pipes for fresh and Wastewater as well as pipes and lines for any media, including gaseous and vaporous media is a technically highly sensitive process, the utmost care and flawless material, namely the so-called Rehabilitation hoses, and appropriate tools required. This is based on a rough construction site operation. The  Rehabilitation hoses, also called "liners" in technical terms, are very good sensitive to mechanical influences, temperature and light. The Homogeneous resin impregnation of the material must be maintained until hardening stay. Compression, crushing and buckling of the material handling can cause imperfections in the material impregnation.

Lining channels for repair is an important contribution to protect the environment and to reduce renovation costs. Especially It is important to make sure that the outer and inner film, between where the impregnated textile material is embedded air-free the further handling is not separated from the laminate. Thereby This is because air gets into the laminate through the hose ends closure elements to be attached in a pressure-tight manner, the so-called "packers", is included. When inflating the renovation hose, the so-called calibration, this air is distributed uncontrolled over the Lateral surface, d. H. about the perimeter and the entire length, and through also penetrates the impregnated textile material. This in turn leads to that the resin is displaced from the textile material at such points, which creates capillaries and weak points that lead to leakage of the renovation hose after curing.

Very high demands are made on the rehabilitated sewers during acceptance This is due to the fact that the relevant industry lacks speci fischer standards for the requirements of a factory-made and in open construction is based on laid pipe.

With light and thermosetting resins, energy sources such as UV and IR emitter pulled through the inflated rehabilitation hose, whereby the introduction of these - usually bulky - special energy sources Causes problems, especially with smaller diameters those multi-part, articulated energy sources, so-called "Trains" of spotlights placed in the rehabilitation hose and through must be pulled through. The usual energy sources are bulky, sharp-edged and voluminous, so that their insertion is not only Hose damage but also great physical exertion  in very tight spaces.

In some processes, one of the closure elements has to be after the potash burn through compressed air once again to remove the energy to bring source (s). Not all liners are so stiff that they are in open or calibrated state remain open. The bigger the hose diameter is, the less this auxiliary works medium. When setting the closure element again and when Calibration often separates the foils from the impregnated Fiber material, making the ones already mentioned and still to be described the problems occur: The closure elements should only be inserted once sets and the rehabilitation hose can be calibrated only once. defects and damage that occurs in the operations described noticed after the last calibration at the earliest, but usually only after curing, d. that is, if it is already for a corrective one handle is too late. This is based on the prior art below to be explained in more detail.

It is through US-A-4 680 066 and the corresponding EP-A-0 168 053 known, renovation hoses before placing in a horizontal Sewer pipe on a rigid elbow with one vertical and one fasten horizontal leg and by water pressure in the Everting sewer pipe or turning it upside down. The effect of water pressure is supported by a traction rope, which is at the inner end of the Rehabilitation hose is attached. With this attachment point is a Tow connected to which a number of UV lamps that the Cure the rehabilitation hose, pulled through it become. The large-volume rigid elbow must be in a lower right manhole can be lowered and thereby blocks everyone most of its cross section, so that handling in the Residual cross section of the manhole is made considerably more difficult. Moreover must be the connection between the rehabilitation hose and the knee be sufficiently firm and tight for the relatively high water pressure. The redirection of the necessarily waterproof UV lamps in the The area of curvature of the elbow is designed via a deflection roller  difficult because the UV lamps are sensitive devices acts. For a linear retraction without inverting, the known one is Device neither provided nor suitable, especially not for that Refurbishment of sewer pipes with a diameter of about 100 cm.

US-A-5 154 936 is a mounting rack for a similar Evertie rungsverfahren known in which the outer ends of renovation hoses on one before inserting them into a horizontal sewer pipe vertical pipe socket to be attached, which is located at the bottom a two-part, above-ground pressure chamber is located. A Pressure difference between the two parts of the pressure chamber is caused by achieved a tubular flexible but fiber-reinforced membrane that the part of the rehabilitation hose that has been drawn over is pressure-tight jammed and slows him down too. This device is for the thermi cure provided by hot water and not by UV radiation lung, and it is also not possible to use UV lamps through the waist-shaped to bring constricted and inextensible diaphragm valve through. For a linear retraction without inverting is neither the known device provided still suitable.

EP-A-0 301 204 describes a generic method with a device tion known, initially through the renovation hoses in full length and lying flat between two vertical manholes be drawn into a horizontal sewer pipe before opening blow with air pressed against the tube wall and by UV rays be cured. This is done by closing the Rehabilitation hose through closure bodies, so-called "packers" the pressure-tight also the traction ropes for moving one back and forth UV lamp are passed. The underground installation of the Packer and the UV lamp must, however, before inflating in the lower right manholes can be carried out by using a hose the top half of which is raised by hand to open an opening generate, in which first one or more UV lamps and then the packer must be inserted. However, this is part of it increasing diameter and / or specific basis weight  of the rehabilitation hose more difficult and uncomfortable because namely, the hose wall to be lifted heavy and worn out Resin is covered. Naturally, the hose has that under gravity Tendency to collapse again, and it particularly hinders the sufficiently deep or complete insertion or "threading" of the UV lamp and the last closure element or "packer", in particular This is the case if it is a "train" of such UV lamps that are articulated together. At the other end of the Renovation hose does not have to be pushed in the UV lamps, insists on the need to unfold the hose and the tight placement of the packer inside the manhole, so again underground. Only after all of these very time-consuming work, where there is also a risk that the the renovation hose can be damaged inflated and cured. Damage to the inner film usually has resin leakage and a leaky renovation hose result. In the cited document there is a maximum diameter of Refurbishment hose of 400 mm specified.

The invention is therefore based on the object, a method and a Specify device with which the rehabilitation of horizontal sewer and other pipes significantly easier due to radiation curing, time-saving, cleaner, more reliable and more ergonomic with high Quality and reproducibility must be carried out.

According to the invention, the object is achieved in the method specified at the outset in that

• a) the front end of the rehabilitation hose initially in vertical lowered the shaft and then converted into the horizontal steers and so far into the channel by means of the train until its rear end, if necessary by cutting off one sigen hose length, in a holding position a predetermined Distance "H" over the bottom of the shaft,
• b) the vertically hanging rear end of the rehabilitation hose opened and its edge on a holding device above or in the  first shaft is attached,
• c) the at least one energy source perpendicular to the open end lowered and then this through a rear closure element is closed,
• d) the now closed rear end with the enclosed Abge at least one energy source to the level of the channel bottom lowers and is drawn horizontally into the channel until the entire renovation hose in its specified end position lung, and that
• e) the renovation hose is expanded and then cured becomes.

The invention solves the problem in its entirety, that is, the renovation of horizontal sewer and other pipes by radiation curing is significantly easier, time-saving, cleaner, more reliable and ergonomic and can be carried out with high quality and reproducibility. In particular, the process

• - to be carried out reliably in rough construction site operations,
• - facilitates the introduction of energy sources for the Curing and the "packer" for calibration, because all Masses hanging, d. i.e., free of lateral forces, handled can be
• - protects the sensitive liners against excessive mechanical influences such as compression, crushing and kinks and tears in the wrapping films,
• - avoids air pockets and thus local resin repression and thus defects and complaints,
• - avoids the separation of foil covers and impregnation fiber material,
• - avoids calibration twice d. H. the repetition of operations, and
• - saves time and costs as well as rework.

In the course of further refinements of the method according to the invention, it is particularly advantageous if - either individually or in combination -:

• - The rehabilitation hose on his before inserting it into the sewer front end is closed by a first closure element,
• - The at least one energy source through its casters in the vertical hanging rear end of the rehabilitation hose is centered, and / or if
• - the traction element for the transport of the rehabilitation hose from first to the second shaft, the target shaft, on the first Closure element is attached.

The invention also relates to a device for lining in essential horizontal channels between vertical shafts are arranged with renovation hoses that have at least one layer made of a textile material with an energy source curable resin is impregnated, the device being a first Winch with a first pulling element for pulling in the renovation hose into the channel, a second winch with a second pulling element for the handling of the rehabilitation hose and the energy source and at least one closure element for the closure of at least the has rear end of the rehabilitation hose.

To solve the same problem, such a device is fiction characterized in that one over or in one of the chess te attachable holding platform is provided, the clamping devices for the vertically hanging open rear end of the renovation hose and that the second winch is arranged above the holding platform is that by means of the second train element, for. B. a cable, first the at least one energy source and immediately afterwards one of the Closure elements concentrically in the vertically hanging open rear end of the renovation hose can be lowered.  

In the course of further refinements of the device according to the invention, it is particularly advantageous if - either individually or in combination -:

• - at least the front one when pulling in the renovation hose Closure element has a cross section such that it along with the end of the remediation associated with it hose can be pulled through the channel,
• - at least the front one when pulling in the renovation hose Closure element is attached to the traction element of the first winch.

Two exemplary embodiments of the invention are explained in more detail below with reference to FIGS. 1 to 4.

Show it:

Fig. 1, the first phase of a remediation process according to a first embodiment, starting from a slot with a substantially constant cross-section,

Fig. 2 shows the second phase of the remediation process according to the same embodiment,

Fig. 3 shows the third phase of the renovation process according to the same embodiment and

Fig. 4 shows the second phase of a refurbishment process according to another embodiment, starting from a shaft with a narrow entry opening.

In Figs. 1 to 3, a first shaft 1 and a second shaft 2 are shown, whose vertical axes "d" vonein A1 and A2 a distance, on the other, which is usually 50 to 60 m is, however, also be shorter or longer than 100 m can be. The shafts each have an upper edge 3 and open at the bottom into an essentially horizontal channel 4 , which connects them and other shafts, not shown, to one another. The channel 4 has a sole 5 .

In Fig. 1 lies on the first shaft 1, a pallet 6 , which initially only a first closure element 7 , also referred to as a "packer" carries, namely a cylindrical body with outer peripheral ribs. About this closure element 7 , the lower, circularly open edge of a prefabricated, resin-impregnated renovation hose 8 is drawn, which is supplied in a flat state from the side and is deflected by a roller 9 into the vertical. For example, the rehabilitation hose 8 comes from another pallet that is located on a vehicle. In the pulled-over state, the hose end on the closure element 7 is tightened in a pressure-tight manner by means of tensioning straps. A protective device 10 , which can consist of skids, which are arranged distributed over the circumference of the closure element, protect the sensitive hose from damage on its further path. The protective device 10 namely allows the closure element 7 with the surrounding hose beginning without any problems such as nissse. B. sleeve heels, which are located between the shaft 1 and the target shaft 2 .

The overall diameter is smaller than the cross section of the channel 4 . A first pulling rope 11 is already passed through the closure element 7 , which continues within the rehabilitation hose 8 and the meaning of which will be discussed in more detail below.

After briefly lifting the arrangement, the pallet 6 is pulled away and the closed hose end is lowered into the shaft 1 . Arrived on the sole 5 , the closure element 7 is tilted by 90 ° and pulled away laterally into the channel 4 by means of a pulling element 13 , a deflection roller 14 and a winch 15 , which is arranged above the second shaft 2 . This process shows FIG. 2.

The sideways movement of the closure element 7 and the mitschllepp th renovation hose 8 happens until the other side, second end of the renovation hose 8 has arrived at a height distance "H" above the shaft floor or the sole 5 of the shaft 1 . This presupposes an exact length assembly of the renovation hose 8 . Any excess lengths can also be cut off on site. Now a holding stage 16 with a work platform 17 is arranged on the upper edge 3 of the shaft 1 , which has a circular opening and on its circumference a ring of clamping devices 18 . The upper edge of the hose end is turned through 90 ° and held by means of the clamping devices 18 .

The opening in the renovation hose 8 is so large that now from above by means of a tensile cable 19 via a deflection roller 20, both an energy source 21 , which consists of a series arrangement, a "train", of three UV radiation sources, and a second closure element 22 hanging vertically into the hose opening. Before the traction rope 11 already in the renovation hose 8 is fastened at the point 12 at the front end of the energy source 21 . The energy source 21 centers gently in the renovation hose 8 by the usual, not numbered casters. After the closure element 22 has been inserted, it is connected to the hose end in a pressure-tight manner via further tensioning straps 23 .

The cable 19 , which is sealed, but movably guided through the closure element 22 , serves to supply energy to the energy source 21 and to lower and later pull the same. The individual members of the energy source 21 are flexibly connected to each other by the cable 19 . The rehabilitation hose 8 is now ready for its further trans port in its final position as shown in FIG. 3. The dimension "H", which ends above ground in the present case, is to be chosen so that all the links of the energy source 21 are hanging vertically deep enough in the Hose end can be lowered.

First, the clamping devices 18 are released , and then the entire renovation hose 8 is pulled into its final position according to FIG. 3, again by the traction element 13 , the deflection roller 14 and the winch 15 . The holding platform 16 can also be removed later. The closure elements 7 and 22 are now within the floor plans of the shafts 1 and 2 , as can be seen from FIG. 3. The upper circumferential half of the renovation hose 8 conforms to the axial contour of the energy source 21 , but in the remaining areas and at a distance from the closure elements 7 and 22 initially lies flat on the lower circumferential half of the renovation hose 8 .

From this position shown in FIG. 3, the renovation hose 8 is now blown up by a compressor and compressed air lines, not shown, whereby it bears against the entire circumference of the channel 4 . Now the energy source 21 is switched on and moved in the longitudinal direction through the rehabilitation hose 8 , which can also be done several times in the back and forth by means of the pull cable 11 and the cable 19 . Once the renovation hose 8 is cured, it is separated along the contours of the shafts 1 and 2 and the channel 4 , so that the closure elements 7 and 22 with the hose ends attached to them can be pulled out of the shafts 1 and 2 . Channel 4 is now completely renovated between shafts 1 and 2 .

Fig. 4 shows a variant of the method according to Fig. 2, namely in this case the shaft tapers at its upper entry end 1 a, wherein between the lower part of the shaft 1 and the entry end 1 a a frustoconical transition surface 1 b is . A common measure for the diameter of the entry end is 600 mm. The dimension "H", which ends in this case, starting from the base 5 , is also to be chosen so that the energy source 21 and the last "packer" can be lowered vertically hanging deep enough in the hose end. In the event that the closure element 22 and / or the energy source 21 cannot be inserted completely through the entry end 1 a, a closure element 22 that can be dismantled into individual parts and energy sources 21 that can be dismantled can be used. The holding platform 16 and the working platform 17 can also be designed to be dismantled and are then reassembled in the lower shaft part, as shown in FIG. 4.

The following considerations apply here, among other things: With increasing diameter of the rehabilitation hose 8 , the number of "limbs" of the energy source 21 decreases in the limit case to a single limb ( FIG. 4) with a simultaneous increase in the number of individual radiators 21 a on the circumference of the Limb or limbs, which then again increases the bulkiness and weight of the energy source (s) and the surface weight of the rehabilitation hose increases.

It is also possible not to mount the closure member 7 in advance at the front end of the hose, as shown in Fig. 1 and 8 do not pass pull the Sanierungs hose by means of this fastener element 7 through the channel 4, as shown in Figs. 2 and 3. Rather, it is entirely possible to pull the rehabilitation hose 8 lying completely flat by means of the traction cable 13 through the channel 4 to the target shaft 2 and to mount the closure element 7 there only. Fig. 4 also shows that each link of the energy source 21 has a number of distributed on the circumference th emitters 21 a, which can be UV emitters and / or infrared emitters.

Instead of placing the work platform 17 on the sole 5 by means of supports 16 a, it is also possible, as shown in FIG. 4, to hang them up on the ropes 16 b through the entry end 1 a, thereby increasing the free space in the shaft for the working personnel. B for the suspension of the upper ends of the soap 16 can then again a working platform 2 can be used analogous to FIG., But this is not shown.

Reference list

1

first shaft

1

a End of boarding

1

b conical transition surface

2nd

second shaft

3rd

upper edge

4th

channel

5

sole

6

palette

7

Closure element

8th

Renovation hose

9

roller

10th

Protection device

11

Traction rope

12th

Job

13

Tension member

14

Pulley

15

Winds

16

Stage

16

a props

16

b ropes

17th

Work platform

18th

Clamping devices

19th

electric wire

20th

Pulley

21

Energy source

21

a spotlight

22

Closure element

23

Straps
A1, A2 vertical axes
"d" distance
"H" height difference

Claims (8)

1. A method for lining substantially horizontal channels ( 4 ), which are arranged between vertical shafts ( 1 , 2 ), with renovation hoses ( 8 ) which have at least one layer made of a textile material which is impregnated with a resin curable by energy radiation , wherein the remediation tube (8) fed by means of a traction member (13) into the channel (4) and provided at both ends with closure elements (7, 22) prior to curing of the resin, is expanded by a pressure medium to the cross section of the channel (4) , and wherein for curing at least one energy source ( 21 ) is transported in the longitudinal direction through the expanded rehabilitation hose ( 8 ), characterized in that

• a) the front end of the renovation hose ( 6 ) is first lowered vertically into the shaft ( 1 ) and then diverted into the horizontal and drawn into the channel ( 4 ) by means of the pulling element ( 13 ) until its rear end, possibly through Cutting off an excess length of hose, in a holding position assumes a predetermined height distance ("H") above the base ( 5 ) of the shaft ( 1 ),
• b) the vertically hanging rear end of the renovation hose ( 8 ) is opened and its edge is fastened to a holding device ( 16 ) above or in the first shaft ( 1 ),
• c) the at least one energy source ( 13 ) is lowered vertically into the open end and this is then closed by a rear closure element ( 22 ),
• d) the now closed rear end with the enclosed at least one energy source ( 21 ) is lowered to the level of the sewer base ( 5 ) and drawn horizontally into the sewer ( 4 ) until the entire renovation hose ( 8 ) is in its predetermined position End position, and that
• e) the rehabilitation hose ( 8 ) is expanded and then cured.

2. The method according to claim 1, characterized in that the rehabilitation hose ( 8 ) before insertion into the channel ( 4 ) is closed at its front end by a first closure element ( 7 ). 3. The method according to claim 1, characterized in that the at least one energy queue ( 21 ) is centered by its casters in the vertically hanging rear end of the rehabilitation hose ( 8 ). 4. The method according to claim 2, characterized in that the train organ ( 13 ) for the transport of the rehabilitation hose ( 8 ) from the first ( 1 ) to the second shaft ( 2 ) on the first closure element ( 7 ) is attached. 5. Device for lining substantially horizontal channels ( 4 ), which are arranged between vertical shafts ( 1 , 2 ), with renovation hoses ( 8 ), which have at least one layer made of a textile material, which with a source of energy ( 21 ) is curable resin, the device comprising a first winch ( 15 ) with a first pulling element ( 13 ) for pulling the rehabilitation hose ( 8 ) into the channel ( 4 ), a second winch with a second pulling element for handling the Sanie rungsschlauchs ( 8 ) and the energy source ( 21 ) and at least one closure element ( 7 , 22 ) for closing at least the rear end of the renovation hose ( 8 ), characterized in that one over or in one of the shafts ( 1 , 2nd ) Attachable bare holding platform ( 16 ) is provided, the clamping devices ( 18 ) for the vertically hanging open rear end of the renovation hose ( 8 ) and that the two te winch is arranged above the holding platform ( 16 ) in such a way that by means of the second pulling element (cable 19 ) first the at least one energy source ( 21 ) and immediately afterwards one of the closure elements ( 22 ) concentrically into the vertically hanging open rear end of the rehabilitation hose ( 8 ) can be lowered. 6. Apparatus according to claim 5, characterized in that minde least the front during insertion of the rehabilitating pipe (8), closure element (7) has a cross-section such that the tube together with its related end of the rehabilitation (8) through the channel ( 4 ) can be pulled through. 7. The device according to claim 5, characterized in that at least the front closure element ( 7 ) is attached to the pulling element ( 13 ) of the first winch ( 15 ) when the sanitation hose ( 8 ) is pulled in. 8. The device according to claim 5, characterized in that the holding platform ( 16 ) within the shaft ( 1 ) on ropes ( 16 b) is suspended.