KR102374059B1 - Tube reversing device for conduit repair with internal guide pipe - Google Patents

Abstract

The present invention relates to a tube reversing device for conduit repair with an internal guide pipe, wherein a tube can be reversed and inputted into an underground conduit using air pressure, and the leakage of the air pressure to the outside can be prevented effectively even using a small amount of liquid for blocking leakage pressure alone. The present invention comprises: a main body casing having an inlet for introducing air pressure with the tube not reversed and an outlet for receiving air pressure and discharging air pressure while the tube is reversed, formed at a front side and a rear side respectively, and having an inner bulkhead installed to divide the inner space into a front-side space and a rear-side space; a guide pipe installed in the inner space of the main body casing while penetrating the inner bulkhead in an anteroposterior direction, guiding the not-reversed tube to pass the inside, having a bending part formed between a fore-end part and a rear end part to be bent downward, having the bending part filled with liquid for blocking leakage pressure to prevent the leakage of air pressure provided into the rear-side space of the main body casing for the expansion and contraction of the tube; and transporting rollers installed in a pair on an upper part and a lower part at the inlet of the main body casing to backward pressurize and transport the tube.

Description

Tube reversing device for conduit repair with internal guide pipe}

The present invention relates to a tube reversing device for pipeline repair, and in particular, by using air pressure to reverse the tube into an underground pipeline, and to effectively block the outflow of air pressure with only a minimal amount of leakage-blocking liquid. It relates to a tube inversion device for use.

In general, a tube reversing device is a device for repairing old pipes buried underground such as water and sewage pipes and industrial pipes for gas, electricity, and communication, and while inverting the tube impregnated with curable resin, the inside of the pipe After inserting into the tube, expanding the tube and pressing it to the inner wall of the pipeline, a series of operations are performed to harden the curable resin and adhere to the inner wall of the pipeline.

In this regard, the conventional tube inversion device disclosed in Korean Patent Publication No. 10-0822336 provides a roller for guiding the tube, and an enclosed space, and a fluid inlet and fluid outlet for supplying and discharging fluid to and from the inside of the tube. It was configured to include a body in which the inlet and outlet of the tube were formed.

The conventional tube reversing device having such a configuration is to fill the inside of the pipe by transferring the end of the tube while inverting it in the state that it is moved and installed toward the pipe, and the high-temperature fluid is supplied into the inside of the tube by the fluid supply device to the inside of the pipe. The thermosetting resin pre-impregnated on the outer surface of the tube in contact with the inner peripheral surface was cured. Afterwards, when the thermosetting work of the thermosetting resin was completed, a series of pipe repair work could be completed by recovering the tube in the pipe.

In the tube reversing device according to the prior art, there was a problem of reducing the working efficiency because a large amount of the fluid supplied to expand the tube flows out through the inlet to which the tube is supplied.

Korean Patent Publication No. 822336 (2008.04.08.)

Accordingly, the present invention has been proposed to solve the various problems of the prior art, and an object of the present invention is to use air pressure to invert the tube to the inside of the underground pipeline, and to inject the tube into the underground conduit by inverting the air pressure with only a minimum amount of liquid for blocking leakage. An object of the present invention is to provide a tube reversing device for repairing a pipeline to effectively block the outflow of

In order to achieve the above object, the tube reversing device for pipe repair according to the technical idea of the present invention is a tube reversing device for pipe repair in which the tube can be inverted and put into the underground pipe by using air pressure, the front side The main body casing is provided with an inlet and air pressure flowing in before the tube is inverted, and an outlet is formed in the rear and the tube is inverted, respectively, and an inner partition dividing the inner space into a front space and a rear space is installed; It is installed in the inner space of the body casing in a state that penetrates the inner partition wall in the front-rear direction and guides the tube in the state before being reversed to pass through the inside, and a bent portion bent downward is formed between the front end and the rear end, and the a guide tube filled with a liquid for blocking leakage of pressure inside the bent part to block the air pressure provided to the space behind the body casing for inversion and expansion of the tube from leaking out; and a transfer roller installed as a pair at the upper and lower portions at the inlet of the main casing to pressurize the tube to the rear.

Here, a plurality of guide rollers are installed along the inner upper and lower surfaces of the guide tube to protect the tube passing through the guide tube from being damaged due to frictional contact with the inner surface of the guide tube. there is.

In addition, the guide roller may be characterized in that it is intensively disposed on the upper surface and the lower surface of the bent portion of the guide tube.

In addition, it may be characterized in that a plurality of weight rollers are further provided inside the bent portion of the guide tube to press the tube by its own weight so as not to lift the tube in a state in which the tube is submerged in the leakage pressure blocking liquid.

In addition, a plurality of support members for supporting the upper and lower sides of the guide tube are installed inside the main casing, and among the support members, the support member installed near the outlet is provided as a spring for elastically supporting the guide tube. can do.

In addition, it may be characterized in that a plurality of observation windows arranged continuously along the transport path of the tube are installed on the side wall of the main casing.

In addition, a first flange installed on the periphery of the outlet of the main body casing, and a second flange coupled to face the first flange with one perimeter of the tube interposed therebetween to fix the periphery of one end of the tube, A crane having an arm installed in the upper part of the rear end of the main body casing so that the rotatable main body can be stretched and contracted, and the second flange is hung and supported by a rope installed in the crane and having a hook installed at the end so that it can be raised and lowered. It may be characterized in that it further comprises a flange support device consisting of a hoist.

In addition, a ring-shaped magnet plate having a magnetism is joined to the opposite surface of the second flange of the first flange to temporarily attach the second flange to the first flange by means of a magnetic force before fastening the second flange to the first flange by a bolt and a nut. It can be characterized as being able to.

The tube reversing device for pipeline repair according to the present invention uses air pressure to invert the tube into the underground pipeline and inserts it, and effectively prevents the outflow of air pressure with only a minimum amount of leakage-blocking liquid by the guide tube installed inside the main casing. can be blocked

1 is a side view of a tube inversion device for pipe repair according to an embodiment of the present invention;
Figure 2 is a side cross-sectional view for explaining the configuration of the tube inversion device for pipe repair according to an embodiment of the present invention
3 to 7 is a series of reference views for explaining the pipe repair method made using the tube inversion device for pipe repair of the present invention
8 is a side cross-sectional view for explaining the configuration of a tube inversion device for pipe repair according to a modified embodiment of the present invention;

With reference to the accompanying drawings will be described in detail with respect to the tube inversion device for pipe repair according to embodiments of the present invention. Since the present invention can have various changes and can have various forms, specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention. In describing each figure, like reference numerals have been used for like elements. In the accompanying drawings, the dimensions of the structures are enlarged than actual for clarity of the present invention, or reduced than actual in order to understand the schematic configuration.

Also, terms such as first and second may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component. Meanwhile, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. Terms such as commonly used dictionary definitions should be interpreted as having meanings consistent with the meanings in the context of the related art, and unless explicitly defined in the present application, they are not to be interpreted in an ideal or excessively formal meaning. .

<Example>

1 is a side view of a tube inverting device for pipe repair according to an embodiment of the present invention, and FIG. 2 is a side cross-sectional view for explaining the configuration of a tube inverting device for pipe repair according to an embodiment of the present invention, FIGS. 7 is a series of reference views for explaining the pipeline repair method made by using the tube reversing device for pipeline repair of the present invention.

As shown, the tube reversing device for pipe repair according to an embodiment of the present invention is a tube reversing device for pipe repair in which the tube (T) can be inverted and put into the underground pipe using air pressure, and the main body casing 110, guide pipe 120, conveying roller 130, support members 140a, 140b, guide roller 150a, rotary reel 160, flange support device 170, caterpillar 101 included as a component.

The tube reversing device 100 for pipeline repair according to an embodiment of the present invention is used to reverse the tube (T) into the underground pipeline by using pneumatic pressure by these major components and to block the minimum amount of leakage pressure It is configured to effectively block the outflow of air pressure with only the liquid FL.

Hereinafter, a tube inversion device for pipe repair according to an embodiment of the present invention will be described in detail with reference to each of the components.

The main body casing 110 is provided with an inlet 111 and air pressure flowing in before the tube (T) is inverted on the front and rear sides, respectively, and the tube (T) is inverted and an outlet 112 is formed. Provide interior space. In the inner space of the main body casing 110, an inner partition wall 113 that separates the front space and the rear space is installed. A through passage 113a through which the guide tube 120 passes is formed at the lower end of the inner partition wall 113 . Inlet holes 117a and 117b for injecting air and steam into the rear space of the inner space for inversion and expansion of the tube T are installed at one point of the body casing 110 . It is preferable that the inlet is installed separately into a first inlet 117a and a second inlet 117b. Then, the hose for air injection and the hose for steam injection can be simultaneously connected to the first inlet 117a and the second inlet 117b from the support vehicle, respectively, so the hose for air injection and the hose for steam injection are alternated during work. There is no hassle of replacing it with

A first flange 116a is installed on the periphery of the outlet 112 of the body casing 110, and a tube coupled to face the first flange 116a with one end of the tube T interposed therebetween ( A second flange 116b for fixing one end of the periphery of T) is provided. Furthermore, a ring-shaped magnet plate 116c having magnetism is bonded to the surface opposite to the second flange 116b of the first flange 116a. According to the configuration in which the magnet plate 116c is provided, the second flange 116b by the magnetic force of the magnet plate 116c before fastening the first flange 116a and the second flange 116b by the bolt and nut. Since it can be temporarily attached to the first flange 116a, it is possible to prevent shaking of the second flange 116a during the fastening operation by the bolt and nut. In the case of the magnet plate 116c, it is provided with a magnetic rubber that can also serve as a packing function. In the case of the magnetic rubber, even if the magnetic force is not strong, it is sufficient in the present invention, which is to prevent the magnet plate 116c from shaking the second flange 116b while the flange support device 170 is supporting the second flange 116b. This is because only the first flange 116a and the second flange 116b may be simply temporarily attached.

On the upper surface of the main body casing 110 , one check hole 118 communicating with the front space and the rear space of the inner space with the inner bulkhead 113 as the center is installed one by one. And a plurality of observation windows 114 continuously arranged along the transport path of the tube (T) are installed on the sidewall of the main casing 110 . When the observation window 114 is installed in this way, it can be seen whether the tube (T) introduced into the body casing 110 is being smoothly transported along a predetermined path. possible.

The guide tube 120 serves to safely guide the tube (T) in the state before being reversed in the body casing 110, and more importantly, the air pressure does not leak to the outside even if only a minimal amount of the leakage pressure blocking liquid (FL) is used. The point is that it makes blocking possible. To this end, the guide pipe 120 is installed in the inner space of the main casing 110, the front end is located near the inlet 111, the rear end is located near the outlet 112, the inner partition wall 113 is formed at the bottom of the through passage ( 113a) is installed.

Here, a bent portion 120a bent downward is formed between the front end and the rear end of the guide tube 120 to pass through the through passage 113a of the inner partition 113, the bent portion 120a inside It is filled with the leaking pressure blocking liquid (FL). With this configuration, even if only a minimum amount of leakage pressure blocking liquid (FL) is used, the air pressure injected into the rear space of the body casing 110 for inversion and expansion of the tube T is more thoroughly and more safely blocked so that the air pressure does not leak to the outside it is possible to do Here, the bent portion 120a may be simply formed only at one point in the central portion of the guide tube 120 as shown in the figure, but may be formed at a plurality of points and filled with the leakage pressure blocking liquid FL for each bent portion 120a. there is. As such, the configuration in which the bent portion 120a filled with the leakage pressure blocking liquid FL is formed at a plurality of points of the guide tube 120 is suitable for providing sufficient air pressure blocking performance when the device is enlarged.

On the other hand, the leakage pressure blocking liquid FL filled in the bent portion 120a of the guide tube 120 may be used as normal water, and even if a liquid having a higher specific gravity than normal water is used, only a small amount is used, so the cost burden There is almost no problem with disposal. When a liquid having a higher specific gravity than water is used, such as a silicone liquid, there is an advantage that it is possible to block a relatively high air pressure even if only a small amount is used compared to water.

It is preferable that the guide tube 120 is provided in the form of an independent square tube having both upper and lower surfaces, and is inserted into the main casing 110 . In this case, on both sides of the guide tube 120 , an observation window 114 installed on both walls of the main body casing 110 and a corresponding observation window 114 are installed together, and the tube (T) transported inside the guide tube 120 . ) to be observable from the outside. Here, the guide tube 120 may be installed in a form that shares both side walls of the main casing 110 without having separate side surfaces.

A discharge valve 121 is installed on the lower surface of the bent portion 120a of the guide tube 120 to selectively discharge the leakage pressure blocking liquid (FL), and the upper and lower surface of the guide tube 120 is for blocking leakage pressure. A discharge valve 121 is additionally installed for the purpose of discharging when the liquid FL is filled more than necessary. On the other hand, it is preferable that the drain valve 115 for draining the bottom of the body casing 110 is also installed.

The support members 140a and 140b are installed to support the guide tube 120 from the upper and lower sides inside the main body casing 110, and the front support members 140a and It is provided with a rear support member 140b installed on the rear side. Among them, the rear support member 140b supporting the rear portion of the guide tube 120 to which vibration and shock are continuously applied due to the inversion and expansion of the tube T is provided with a spring to enable elastic support. The rear support member 140b is mainly made of a coil spring, but may be formed of various elastic materials corresponding thereto. According to the configuration of the rear support member 140b provided with a spring as described above, when the guide tube 120 is supported from the upper and lower sides, the rear portion of the guide tube 120 located near the outlet 112 is reversed by air pressure. And it is possible to stably support the guide tube 120 while absorbing the shock by the rear support member 140b provided with a spring when it is shaken under the influence of the tube T that expands and flows out. In particular, in the case of the guide tube 120, since the leakage pressure blocking liquid (FL) is accommodated therein, it is elastically supported to allow displacement by the rear support member 140b provided with a spring rather than being installed in a completely rigid state. To be able to accept it is structurally safe and capable of withstanding continued fatigue loads.

A plurality of the guide rollers 150a are installed along the inner upper and lower surfaces of the guide tube 120 . Accordingly, the tube T passing through the guide tube 120 can be protected from being damaged due to frictional contact with the inner surface of the guide tube 120 . As shown in FIG. 2, the guide roller 150a is preferably intensively disposed on the upper and lower surfaces of the bent portion 120a, which is the point at which the contact frequency and strength with the tube T is highest.

On the other hand, inside the bent portion 120a of the guide tube 120, as can be seen in the modified embodiment diagram of FIG. A plurality of weight rollers 150b for pressing T) may be further provided. Unlike the guide roller 150a, the weight roller 150b is fixed to one point of the guide tube 120 and is installed in a freely movable form without being constrained. Thereby, the tube (T) is protected from being lifted while submerged in the leakage pressure blocking liquid (FL). The weight roller 150b may have sufficient weight to stably press the tube T passing through the guide tube 120 while having a tendency to be located at the lowest point among the lower surfaces of the bent portion 120a by its own weight. It is preferable to be provided with a metallic material rather than a plastic material. As a result, the tube passing through the inside of the guide tube 120 despite the shaking of the guide tube 120 that may occur due to the inversion, expansion, and transport of the tube T and the sway of the leakage pressure blocking liquid FL. T) is stably transported without lifting or escaping from the path in the state of being submerged in the leakage pressure blocking liquid (FL).

The transfer roller 130 is installed in a pair at the upper and lower portions at the inlet 111 of the main casing 110 to transfer the tube T to the rear under pressure. The transfer roller 130 receives a driving force from a nearby motor 130a to rotate. When such a transfer roller 130 is installed, the tube (T) is dragged with air pressure from the outlet 112 side, and the transfer roller 130 is pushed from the inlet 111 side, and the tube (T) is expanded and transferred in reverse. This is done more smoothly. The conveying roller 130 may be provided with a friction protrusion formed on the outer surface to improve the pressure conveying ability for the tube (T).

A support rope 161 wound around the rotary reel 160 is connected to the other end T1 of the tube T that is rolled inward due to the transfer and reverse expansion of the tube T. As a result, the rotating reel 160 gradually releases the support rope 161 so that the other end T1 of the tube T can move in line with the passage of the tube T and reverse expansion thereof. In this way, the support rope 161 connected to the other end T1 of the tube T is gradually released from the rotating reel 160 as shown in FIGS. 5 and 6 while continuing the other end T1 of the tube T. is supported, and thereby the tube (T) is successfully reversed and expanded, and is closely adhered to the entire area of the pipe to be repaired.

The flange support device 170 serves to elevate and support the second flange 116b when the first flange 116a and the second flange 116b are fastened to fix the periphery of one end of the tube (T). To this end, the flange support device 170 is installed on the crane 171 and the crane 171 in which the arm 171a is installed so as to be rotatably operable on the main body so as to be rotatably operable on the rear end of the main body casing 110 . It consists of a hoist 173 that allows the second flange 116b to be raised and lowered in a state in which the hook 116d of the second flange 116b is hung by a rope 173a having a hook 174 at the end thereof. Here, the first flange 116a is already installed and fixed on the periphery of the outlet 112 of the main casing 110, and the second flange 116b corresponds to the size of the tube T used separately. to be selected from those having through-holes of different sizes and fastened to the first flange 116a. In order to fasten the second flange 116b to the first flange 116a, the flange support device 170 is attached to the hook 116d of the second flange 116b in a state where the second flange 116b is placed on the transport vehicle or the ground. After hooking the hook 174 of the hoist 173, the rope 173a is wound to lift the second flange 116b to the height of the first flange 116a. Thereafter, the second flange 116b is moved to the vicinity of the first flange 116a by the crane 171 . Then, the first flange 116a and the second flange 116b are fastened with a bolt and a nut with one end of the tube T interposed between the first flange 116a and the second flange 116b. At this time, if the first flange 116a and the second flange 116b are temporarily attached to each other using a magnet plate 116c before fastening them with a bolt and a nut, the second flange 116b is attached to the rope 173a in a state in which it is attached. Since it does not wobble, fastening using bolts and nuts becomes much easier.

The caterpillar 101 is installed under the main casing 110 . Accordingly, the tube inversion device for pipe repair of the present invention is equipped with the ability to move by itself without receiving support from other vehicles. A hydraulic device 119 is installed at a lower portion of the main casing 110 to stably support the ground.

The pipeline repair method using the tube inversion device for pipeline repair of the present invention configured as described above will be briefly described based on the attached FIGS. 3 to 7 as follows.

First, the pre-investigation, dredging, and cleaning steps of the pipeline to be repaired are carried out. In this step, a field survey, a traffic treatment plan, a water return plan, and a ventilation plan are established, and the inside of the pipeline is cleaned under high pressure using the cleaning nozzle 212 installed in the vacuum suction dredging vehicle 201 as shown in FIG. 3 . Thereafter, the sludge in the pipeline is vacuum sucked together with the washing water by the high-pressure cleaning vehicle 202 to clean the inside of the pipeline. At this time, the water plug 211 is installed before the dredging operation to perform water blocking and water rotation.

After that, the investigation step in the pipeline proceeds. In this step, as shown in FIG. 4, the CCTV investigation vehicle 203 is moved near the ground manhole, and then the CCTV-equipped investigation robot 213 is put into the pipeline and moved while monitoring the condition in the pipeline, including the damaged part in the pipeline. Investigate through video. When the investigation in the pipeline is completed, if necessary, a work tool or robot is put into the pipeline to arrange the tube (T) in order to facilitate the input and application of the lining material.

After that, the tube insertion step is performed. In this step, as shown in FIG. 5, the tube reversing device 100 for pipe repair according to the embodiment of the present invention and the support vehicle 204 capable of supplying air and steam, etc., are moved together near the ground manhole, and then the By supplying air to the tube reversing device 100 for pipeline repair, the tube (T) impregnated with a thermosetting resin is put into the pipeline while inverting. At this time, the air pressure is about 0.3 to 0.6 kg/cm ² to comply with the inversion and transport speed of the tube (T), and one end of the tube (T) is installed in the outlet 112 of the body casing 110 first flange (116a) And while the tube (T) is inverted in a state fixed by the second flange (116b), the other end (T1) moves in the conduit. The outer surface of the inverted tube (T) while maintaining the state supported by the support rope 161 that is released by the is smoothly adhered to the inner circumferential surface of the conduit. When the end of the maintenance section in the pipeline is reached, the transfer of the tube T is limited by the stopper 214 installed in advance.

After that, the curing step is performed. In this step, as shown in FIG. 6, steam is supplied from the boiler of the support vehicle 204 to the tube reversing device 100 for pipeline repair of the present invention, and a high temperature temperature atmosphere 80 in the tube T already inserted into the pipeline. ℃ or higher). The temperature in the pipe line created by steam is determined by the curing program according to the pipe diameter and the thickness of the thermosetting resin, which is the lining material. do.

After that, the inspection step is performed. In this step, as shown in Fig. 7, once again, the CCTV investigation vehicle 203 is moved near the ground manhole, and then the CCTV-equipped investigation robot 213 is put into the pipe and moved while the lining is completed in detail. investigate Check the wrinkle formation, peeling phenomenon, and lifting phenomenon of the thermosetting resin used as a lining material and save it as reference data for repair or future maintenance.

Although preferred embodiments of the present invention have been described above, various changes, modifications and equivalents may be used in the present invention. It is clear that the present invention can be equally applied by appropriately modifying the above embodiments. Accordingly, the above description is not intended to limit the scope of the present invention, which is defined by the limits of the following claims.

110: body casing 120: guide tube
130: transfer roller 140a, 140b: support member
150a: guide roller 150b: weight roller
160: rotary reel 170: flange support device

Claims (8)

A tube reversing device for pipe repair that uses air pressure to reverse the tube and put it into the underground pipe,
The body casing is provided with an inlet and air pressure flowing in before the tube is inverted on the front and rear sides, respectively, and an outlet is formed when the tube is inverted, and an inner bulkhead dividing the inner space into a front space and a rear space is installed; It is installed in the inner space of the main body casing in a state that penetrates the inner partition wall in the front-rear direction and guides the tube in the state before being reversed to pass through the inside, and a bent portion bent downward is formed between the front end and the rear end, and the a guide tube filled with a liquid for blocking leakage of pressure inside the bent part to block the air pressure provided to the space on the rear side of the body casing from leaking out for inversion and expansion of the tube; and a transfer roller installed in a pair at the upper and lower portions at the inlet of the main casing to pressurize and transfer the tube to the rear;
A plurality of guide rollers are installed along the inner upper surface and lower surface of the guide tube to protect the tube passing through the guide tube from being damaged due to frictional contact with the inner surface of the guide tube, the guide roller is intensively disposed on the upper and lower surfaces of the bent portion of the guide tube,
A plurality of non-constrained weight rollers provided to be freely movable inside the bent portion of the guide tube to press the tube from the upper side by its own weight so that the tube does not float in a state in which the tube is immersed in the leakage pressure blocking liquid,
A first flange installed on the periphery of the outlet of the main body casing, and a second flange coupled to face the first flange with one perimeter of the tube interposed therebetween to fix the periphery of one end of the tube, the body comprising: A crane having an arm installed on the upper part of the rear end of the casing to enable expansion and contraction in the rotatable main body, and a hoist installed in the crane to enable lifting and lowering in a state in which the second flange is hung and supported by a rope having a hook installed at the end. It further comprises a flange support device consisting of
A ring-shaped magnet plate having a magnetism is joined to the opposite surface of the second flange of the first flange so that it can be temporarily attached by magnetic force before fastening the second flange to the first flange by a bolt and a nut. A tube reversing device for pipe repair, characterized in that. delete delete delete According to claim 1,
A plurality of support members for supporting the upper and lower sides of the guide tube are installed inside the main casing, and among the support members, a support member installed near the outlet is provided as a spring for elastically supporting the guide tube. Tube reversing device for maintenance. According to claim 1,
A tube reversing device for pipe repair, characterized in that a plurality of observation windows continuously arranged along the transport path of the tube are installed on the side wall of the main casing. delete delete

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