Maintenance equipment and repair method for partial repair sections of water and sewage buried pipes using tapered airbags that do not use housing bodies

Abstract

The present invention relates to a repair device and repair method for a partial repair section of a buried water and sewer pipe using a tapered airbag that does not use a housing body, and more specifically, to a repair device and repair method for a partial repair section of a buried water and sewer pipe using a tapered airbag that does not use a housing body, provided with a body of a tapered airbag made of a flexible material that can be smoothly inserted into a narrow sewer manhole and bend freely when moving along a curved buried pipe, tapered sections are formed on both sides of the body to install a traction ring and an air and steam supply valve on the front and rear sides, and a repair tube and a transfer sheet are inserted into the circumference of the body to quickly move to a partial repair section of a buried pipe where cracks occur on the wall of the buried water and sewer pipe or where the pipe is damaged, and to simultaneously perform the inflation of the tapered airbag and the hardening of the repair tube by supplying air and steam into the body.

Description

Technology Field

[0001] The present invention relates to a repair device and repair method for a partial repair section of a buried water and sewer pipe using a tapered airbag that does not use a housing body, and more specifically, to a repair device and repair method for a partial repair section of a buried water and sewer pipe using a tapered airbag that does not use a housing body, provided with a body of a tapered airbag made of a flexible material that can be smoothly inserted into a narrow sewer manhole and bend freely when moving along a curved buried pipe, tapered sections are formed on both sides of the body to install a traction ring and an air and steam supply valve on the front and rear sides, and a repair tube and a transfer sheet are inserted into the circumference of the body to quickly move to a partial repair section of a buried pipe where cracks occur on the wall of the buried water and sewer pipe or where the pipe is damaged, and to simultaneously perform the inflation of the tapered airbag and the hardening of the repair tube by supplying air and steam into the body. Background Technology

[0002] Various water and sewage pipes buried underground gradually deteriorate and corrode over time, causing massive water leakage and contaminating drinking water due to the influx of rusty water.

[0003] In the case of sewer pipes, partial damage occurs due to the load from above-ground structures or repeated vibrations, or gaps or unevenness develop at the pipe joints. This causes domestic wastewater to leak out of the buried pipes, resulting in environmental pollution by contaminating not only the soil but also groundwater.

[0004] Accordingly, when repairing aging buried pipes damaged by cracks or other issues, a trenchless pipe repair device and method are used when repairing the entire pipe. This method involves inserting a reinforcing tube into the aging buried pipe with cracks to form a new composite pipe without excavating the ground. Since this eliminates the need for road restoration work, it offers significant advantages in terms of constructability, reliability, and economic efficiency.

[0005] Generally, the trenchless pipeline repair method is a method of inserting and fixing a reinforcing tube formed of a waterproof coating layer or film layer and an adhesive resin-impregnated felt layer into the interior of an aged buried pipe. With the adhesive resin-impregnated felt layer facing inward and the waterproof coating layer facing outward, the reinforcing tube is inserted inward into the buried pipe so that the adhesive resin-impregnated felt layer, which was on the inner side, is inverted to the surface and adheres to the inner wall of the buried pipe, thereby covering the inner wall of the buried pipe with the reinforcing tube.

[0006] However, while there is no problem when repairing the entire buried pipe as described above, there was a problem in that the trenchless pipeline repair method could not be applied when repairing the old section of the buried pipe only partially.

[0007] In order to compensate for such problems, an unmanned repair device capable of partial repair is being used in recent times. Looking at the prior registered patent No. 10-0639268 regarding the partial repair device and method for buried water and sewage pipes, it is characterized by comprising: a housing (11) having a plurality of driving wheels (14) installed at the front, formed symmetrically with respect to each other while maintaining a certain distance, and a movable member (10) having a fixed bracket (19) on the inside; a bending member (20) connecting the front and rear housings (11) in the longitudinal direction and allowing the housings (11) to bend; a reinforcing tube (30) fixed to the rear of the housings (11) on both sides to seal the interior and capable of expanding by high-pressure air introduced into the interior of the housings (11); and a repair sheet (40) formed in a circular shape on the outer circumference of the reinforcing tube (30), with both ends sewn together, and attached to the inner wall of the sewage pipe to harden.

[0008] The invention of Patent Document 1 has the problem that, since the entire connecting pipe is integrally connected between the connecting pipes by an articulated wire chain, it is difficult to adjust the length of the connecting pipe according to the repair length of the repair sheet, and since the articulated wire chain is circular, it is difficult to continuously connect the connecting pipes, and if the articulated wire chain is damaged while passing through a curved pipe, the connecting pipe cannot be freely bent by a certain angle by the articulated wire chain.

[0009] The invention of Patent Document 1 has the disadvantage that since the reinforcing tube is installed inside the housing, it is difficult to perform maintenance and replacement work on the reinforcing tube, and since it is difficult to change the length of the reinforcing tube installed in the housing, it is also practically impossible to adjust the length of the connecting pipe.

[0010] In the case of repair sheets installed on the circumference of reinforcing tubes, there is a disadvantage that they cannot be adjusted to suit the extent of cracks and damaged parts of buried pipes, so multiple repair devices must be manufactured and used, but this is practically difficult.

[0011] Conventional partial repair devices have the disadvantage of incurring excessive manufacturing costs because they are mostly made of metal, as well as problems such as damage to the reinforcing tube and the pipe due to collisions with the pipe wall while moving curved buried pipes, and prolonged construction time because it is difficult to move freely along curved pipes. Prior art literature

[0012] Republic of Korea Registered Publication No. 10-0639268 The problem to be solved

[0013] The present invention aims to solve the aforementioned conventional problems. The objective of the present invention is to provide a repair device and repair method for a partial repair section of a water and sewer pipe using a tapering airbag that does not use a housing body, which is equipped with a tapering airbag made of a flexible material that can be smoothly inserted into a narrow sewer manhole and bend freely when moving along a curved buried pipe, and by inserting a repair tube and a transfer sheet into the circumference of the tapering airbag body, it moves quickly to a partial repair section of a buried pipe where cracks occur on the wall of the buried pipe or the pipe is damaged, thereby simultaneously performing the inflation of the tapering airbag and the curing of the repair tube to shorten the construction time.

[0014] Another objective of the present invention is to provide a repair device for a section of a buried water and sewage pipe using a tapered airbag that does not use a housing body, wherein a reinforcing material made of fiber is inserted inside the tapered airbag so that the body does not stretch in the longitudinal direction.

[0015] Another objective of the present invention is to provide a repair device for a partial repair section of a buried water and sewage pipe using a tapered airbag that does not use a housing body, which reduces the weight of the tapered airbag, removes the air inside the body, inserts a repair tube and rolls it up to minimize the volume, and then moves quickly to the partial repair section by means of a towing rope installed on a towing vehicle to improve the efficiency of the curing work.

[0016] Another objective of the present invention is to provide a repair device for a partial repair section of a buried water and sewage pipe using a tapered airbag that does not use a housing body, which can prevent the repair tube from being damaged during the process of moving the buried pipe by inserting a transfer sheet into the circumferential surface of the repair tube.

[0017] Another objective of the present invention is to provide a repair device for a section of a buried water and sewage pipe using a tapered airbag that does not use a housing body, wherein air and steam supply valves are formed in the tapered airbag and pressure gauges are formed in the air and steam supply valves so that the internal pressure of the tapered airbag can be automatically adjusted by the operation of a regulator.

[0018] Another objective of the present invention is to provide a repair method for a section of a buried water and sewage pipe using a tapered airbag that does not use a housing body, which eliminates the inconvenience of having to repeat repair work 3 to 4 times for a damaged repair section of 1 to 1.5 meters by manufacturing the length of the lightweight tapered airbag to be 3 meters or longer, thereby reducing construction costs by shortening construction time. means of solving the problem

[0019] To achieve the objective of the present invention as described above, a repair device for a partial repair section of a buried water and sewage pipe using a tapered airbag that does not use a housing body according to the present invention forms a body of a tapered airbag having tapered sections formed on both sides, inserts a reinforcing material made of fiber material into the inner circumference of the body to prevent the body from stretching in the longitudinal direction, installs a towing ring at the end of the tapered section formed on the front of the body to connect a loop of a towing rope installed on a towing vehicle so that the body can move along the pipeline, forms an air and steam supply valve at the end of the tapered section formed on the rear of the body, connects a hose of a steam supply vehicle to the air and steam supply valve to move the body to a partial repair section of the buried pipe and inflates the tapered airbag, wherein, before connecting the hose to the body, a repair tube is inserted into the circumference of the body and rolled up to minimize volume, and a transfer sheet made of polyethylene is inserted into the circumference of the repair tube and secured at one of the two sides with a fixing strap, and the The body is moved to a partial repair section of the buried pipe by a towing rope, and air and steam are supplied through the air and steam supply valve to inflate the tapering airbag, thereby adhering the repair tube and the transfer sheet to the wall of the partial repair section and curing them.

[0020] delete

[0021] The present invention is characterized by forming a pressure gauge in the air and steam supply valve so that the internal pressure of the tapering airbag can be automatically adjusted by the operation of the regulator.

[0022] delete

[0023] delete Effects of the invention

[0024] According to the present invention as described above, the invention has the effect of enabling smooth insertion into narrow sewer manholes by providing a tapering airbag made of a flexible material, allowing it to bend freely and move quickly along a curved buried pipe, and also has the effect of shortening construction time by inserting a repair tube and a transfer sheet into the circumference of the body of the tapering airbag so that it can quickly move to a partial repair section of a buried pipe where cracks have occurred on the wall of the buried pipe or the pipe is damaged, thereby simultaneously performing the inflation of the tapering airbag and the hardening of the repair tube.

[0025] The present invention has the effect of preventing the body from stretching in the longitudinal direction by inserting a reinforcing material made of fiber material into the interior of a tapered airbag.

[0026] The present invention has the effect of reducing the weight of the tapering airbag, removing the air inside the body, inserting a repair tube, and rolling it up to minimize the volume, while rapidly moving to a partial repair section by a towing rope installed on a towing vehicle, and improving the efficiency of the repair tube curing work.

[0027] The present invention has the effect of preventing the repair tube from being damaged during the process of moving the buried pipe by inserting a transfer sheet into the circumference of the repair tube.

[0028] The present invention has the effect of automatically adjusting the internal pressure of a tapered airbag by operating a regulator by forming air and steam supply valves in a tapered airbag and forming pressure gauges in the air and steam supply valves.

[0029] The present invention has the effect of enabling partial and full repair work by manufacturing a lightweight tapered airbag with a length of 3m or more to eliminate the inconvenience of having to repeat repair work multiple times (2 to 3 times) on a damaged repair section of 1m to 1.5m in the past, the effect of being able to smoothly insert it into a narrow sewer manhole, and the effect of reducing construction costs by shortening the time for tapered airbag work and the curing of the repair tube by moving quickly through curved pipes.

[0030] The tapering airbag of the present invention has the effect of reducing the overall weight, making it easy to move to a location where maintenance work is required, and making it easy to insert the tapering airbag into the pipe inlet. Brief explanation of the drawing

[0031] FIG. 1 is a configuration diagram showing the installation of the tapering airbag repair device of the present invention in the direction of the buried pipe inlet. FIG. 2 is a configuration diagram for moving the tapering airbag repair device of the present invention to a partial repair section. FIG. 3 is a configuration diagram for inflating the tapered airbag of the present invention. FIG. 4 is a partially enlarged configuration diagram of the tapered airbag of the present invention. FIG. 5 is a cross-sectional view of the tapered airbag of the present invention. FIG. 6 is a configuration diagram of the operating state of a conventional maintenance device. Specific details for implementing the invention

[0032] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0033] Referring to FIGS. 1 to 5, the present invention is configured such that a repair tube (20) and a transfer sheet (21) are inserted into the circumference of the body (11) of a tapered airbag (10) that is lightweight enough to be moved quickly into a curved buried pipe, thereby allowing the tapered airbag (10) to be quickly moved to a partial repair section of the curved buried pipe and the inflation of the tapered airbag (10) and the curing of the repair tube (20) to be carried out simultaneously, thereby shortening the construction work time.

[0035] The structure of the tapering airbag (10) is improved so that the curved buried pipe can be bent freely, thereby forming a lightweight body (11) that allows for smooth insertion into a narrow sewer manhole and rapid movement of the curved buried pipe, and a reinforcing material (11a) made of fiber material is inserted into the body (11) so that the body (11) does not stretch in the longitudinal direction, and tapered sections (12)(12a) are formed on both sides of the body (11), and a towing ring (13) is installed at the end of the tapered section (12) formed on the front of the body (11) to connect the loop (18) of the towing rope (17) installed on the towing vehicle (16) so that the body (11) is smoothly inserted into a narrow sewer manhole and rapidly moved into the curved buried pipe, and air and at the end of the tapered section (12a) formed on the rear of the body (11) A tapering airbag (10) is inflated to form a steam supply valve (14) and to connect a hose (31) of a steam supply vehicle (30) to the air and steam supply valve (14). A repair tube (20) is inserted into the circumferential surface of the body (11) of the tapering airbag (10), and a transfer sheet (21) is inserted into the circumferential surface of the repair tube (20). By tying one of the two sides of the transfer sheet (21) with a fixing strap (22) and inserting it into a narrow sewer manhole, the tapering airbag (10), the repair tube (20), and the transfer sheet (21) move smoothly into the narrow sewer manhole by the operation of the towing rope (17) of the towing vehicle (16), passing through the curved buried pipe and moving to the repair section requiring repair. During the process of moving along the buried pipe, the transfer sheet (21) prevents the repair tube (20) from being damaged, while simultaneously It has the feature of being able to move quickly along buried pipes.

[0036] When air and steam are supplied through the air and steam supply valve (14) of the tapered airbag (10) that has moved to the partial repair section of the buried pipe, the tapered airbag (10) expands and the fixing strap (22) of the transfer sheet (21) is released, and the transfer sheet (21) and the repair tube (20) are in close contact with the wall of the partial repair section, and at the same time, the repair tube (20) is cured, thereby reducing construction time and construction costs.

[0037] The air and steam supplied to the tapered airbag (10) can automatically control the internal pressure by operating the regulator according to the value set in the pressure gauge (15) installed in the air and steam supply valve (14).

[0039] The repair method for a section of a buried water and sewage pipe using a tapered airbag that does not use the housing body according to the present invention configured as above is constructed as follows.

[0040] The preparation step for moving the tapering airbag (10) to the repair section requiring repair work on the curved buried pipe involves first installing a steam supply vehicle (30) in the direction of the entrance of the buried pipe, moving a towing vehicle (16) in the opposite direction of the entrance of the buried pipe, inserting the loop (18) of the towing rope (17) installed on the towing vehicle (16) into the inside of the buried pipe and moving it in the direction of the entrance of the buried pipe, and fixing the loop (18) of the towing rope (17) to the towing ring (13) formed on the front of the body (11) of the tapering airbag (10) so that it can be smoothly inserted into the narrow sewer manhole and moved into the inside of the buried pipe.

[0041] The repair preparation step for moving the tapering airbag (10) to the partial repair section of the buried pipe involves inserting a repair tube (20) around the circumference of the body (11) of the tapering airbag (10) and rolling it up to minimize its volume, inserting a transfer sheet (21) around the circumference of the repair tube (20) and securing one of the two sides with a fixing strap (22), connecting the hose (31) of the steam supply vehicle (30) to the air and steam supply valve (14) installed on the rear of the body (11) to smoothly insert the body (11) into the narrow sewer manhole and push it into the pipe so that it can pass through the curved buried pipe, and then operating the towing rope (17) of the towing vehicle (16) to move the tapering airbag (10) to the partial repair section of the buried pipe. Since the air inside the body (11) of the tapering airbag (10) has been released from the tapering airbag (10) initially, the overall The weight is reduced so that it can be smoothly inserted into a narrow sewer manhole and moved quickly, and the tapering airbag (10) is smoothly inserted into a narrow sewer manhole and can bend freely while passing through a curved buried pipe, so it can pass through the curved buried pipe more quickly, and the transfer sheet (21) is characterized by preventing the repair tube (20) from being damaged while passing through the curved buried pipe and at the same time, being able to move the buried pipe quickly.

[0042] As shown in FIG. 6, the entire weight of the tapered airbag (10) can be reduced so that the entire length can be made longer, allowing for a length of more than 3m, and thus enabling partial repair and full repair work to be done in one operation. This eliminates the inconvenience of having to repeat repair work multiple times (2 to 3 times) on a damaged repair section of 1m to 1.5m in the conventional partial repair section.

[0043] The repair device of the present invention has the feature of being able to resolve many problems, such as the disadvantage that it is difficult to move smoothly when a repair device made of a metal housing body is inserted into a narrow sewer manhole during the process of moving into a curved buried pipe as shown in Fig. 6, and that the buried pipe is damaged by colliding with it during the process of moving through the curved buried pipe, or that the tube is damaged while passing through the curved buried pipe.

[0044] The repair tube curing step, which cures the repair tube (20) by supplying steam to the tapered airbag (10), has the characteristic of reducing construction costs by shortening the overall work time because it is possible to simultaneously cure the repair tube (20) and the transfer sheet (21) by supplying air and steam to the air and steam supply valve (14) to inflate the tapered airbag (10) and simultaneously cure the repair tube (20) while adhering the repair tube (20) to the wall of the partial repair section.

[0046] The repair device and repair method for a buried water pipe section using a tapered airbag that does not use a housing body according to the present invention described above are not limited to the embodiments described above, and the technical spirit extends to the scope in which any person with ordinary knowledge in the field to which the present invention belongs can make various modifications without departing from the gist of the present invention claimed in the following patent claims. Explanation of the symbols

[0047] 10: Tapered airbag 11: Body 11a: Reinforcement 12, 12a: Tapered section 13: Towing hook 14: Air and steam supply valve 15: Pressure gauge 16: Towing vehicle 17: Towing rope 18: Hook 20: Repair tube 21: Transfer sheet 30: Steam supply vehicle 31: Hose

Claims

Claim 1 A body (11) of a tapered airbag (10) is formed with tether sections (12)(12a) formed on both sides, and a reinforcing material (11a) made of fiber material is inserted into the inner circumference of the body (11) to prevent the body (11) from stretching in the longitudinal direction, and a towing ring (13) is installed at the end of the tapered section (12) formed on the front of the body (11) to connect the loop (18) of the towing rope (17) installed on the towing vehicle (16) so that the body (11) can move along the pipeline, and an air and steam supply valve (14) is formed at the end of the tether section (12a) formed on the rear of the body (11), and a hose (31) of a steam supply vehicle (30) is connected to the air and steam supply valve (14) to move the body (11) to a partial repair section of the buried pipe so that the tapered airbag (10) A repair device for a partial repair section of a buried water and sewage pipe using a tapering airbag that does not use a housing body, characterized by being inflated, but before connecting a hose (31) to the body (11), a repair tube (20) is inserted into the circumferential surface of the body (11) and rolled up to minimize volume, a transfer sheet (21) made of polyethylene is inserted into the circumferential surface of the repair tube (20) and secured at one of the two sides with a fixing strap (22), the body (11) is moved to a partial repair section of the buried pipe by a traction rope (17), and air and steam are supplied through the air and steam supply valve (14) to inflate the tapering airbag (10) so that the repair tube (20) and the transfer sheet (21) adhere to the wall of the partial repair section and harden. Claim 2 delete Claim 3 A repair device for a section of a buried water and sewage pipe using a tapered airbag that does not use a housing body, characterized in that, in claim 1, a pressure gauge (15) is formed in the air and steam supply valve (14) so ​​that the internal pressure of the tapered airbag (10) can be automatically adjusted by the operation of a regulator. Claim 4 A towing vehicle (16) is installed in the opposite direction of the pipe entrance, and the loop (18) of the towing rope (17) installed on the towing vehicle (16) is inserted into the buried pipe and moved toward the entrance of the buried pipe, and the loop (18) of the towing rope (17) is coupled to a towing ring (13) formed on the front of the body (11) of the tapered airbag (10) to prepare for towing; a reinforcing material (11a) made of fiber material is inserted into the inner circumference of the body (11) to prevent the body (11) from stretching in the longitudinal direction, a repair tube (20) is inserted into the circumference of the body (11) and rolled up to minimize volume, a transfer sheet (21) made of polyethylene is inserted into the circumference of the repair tube (20) and secured at one of the two sides with a fixing strap (22), and steam is supplied to an air and steam supply valve (14) installed on the rear of the body (11). A method for repairing a partial repair section of a buried pipe using a tapered airbag that does not use a housing body, characterized by comprising: a preparation step for repairing a partial repair section of a buried pipe in which a hose (31) of a vehicle (30) is connected to insert a body (11) into the buried pipe, and a towing rope (17) of a towing vehicle (16) is operated to move a tapered airbag (10) to a partial repair section of the buried pipe; and a repair tube curing step in which air and steam are supplied to the air and steam supply valve (14) to inflate the tapered airbag (10) and to cure the repair tube (20) by pressing the repair tube (20) and the transfer sheet (21) against the wall of the partial repair section. Claim 5 A repair method for a section of a buried water and sewage pipe using a tapered airbag that does not use a housing body, characterized in that, in claim 4, a pressure gauge (15) is formed in the air and steam supply valve (14) so ​​that the internal pressure of the tapered airbag (10) can be automatically adjusted by the operation of a regulator. Claim 6 delete Claim 7 delete Claim 8 delete Claim 9 delete Claim 10 delete

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