KR20140092465A - System and method for reparing conduit in non-excavation manner - Google Patents

Abstract

A system and a method for non-excavation type water and sewage repair are provided. According to an embodiment of the present invention, the system for non-excavation type water and sewage repair comprises a liner which includes thermo-hardening resin; a manifold which is connected with both ends of the liner, injects and circulates a fluid in the liner, and discharges the circulating fluid from the liner; a fluid distributor which is connected with the manifold and a fluid supply pipe in order to distribute the fluid; and a valve controller which is placed on the fluid supply pipe in order to sense the temperature and pressure of the fluid and to control the supply of the fluid. The fluid is injected into the both ends of the liner, and the circulating direction thereof is switched at the middle of the liner.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a water-

The present invention relates to a non-digging type water supply and sewer repairing system and method, and more particularly, to a non-digging water supply and sewer repairing system and method that can improve maintenance efficiency of a water supply and sewage pipe and shorten a repairing time.

With urbanization, various pipelines such as water supply and drainage pipes and gas pipes were buried in the basement, and these pipes gradually became aged and corrosion occurred over time. It is an important issue to repair old pipes due to the leakage of water and sewage, pollution of drinking water and leakage of gas due to corrosion of piping.

In the case of excavation works to repair water pipes or gas pipes buried underground, the cost of social loss such as enormous construction cost, heavy traffic, safety accidents and environmental problems will increase. As a result, the unreinforced water supply and sewerage repair method has begun to be developed. Especially in Korea, the width of the road is narrow and the bending part is many, and there are many joints of the auxiliary facilities such as the branch pipe connection and the manhole. In addition, since the depth of the piping is deep and the working environment is poor, many non-digging piping repairing methods are advantageous because there are many sites that are used for the removal of obstacles and the like.

As unreinforced water and sewerage repair methods, there are slip lining, close fit pipe lining, fold and form lining, spirally wound pipe lining, and cured in place pipe ). Recently, reinforced tube hardening method has been attracting the most attention, and various technologies are being developed in various countries around the world.

In such a reinforcement tube curing method, one end of the sealed liner is connected to a retractor, the retractor is moved to the inside of the pipe, the liner is inserted into the pipe, and then the expansion and hardening are performed. A method is required.

SUMMARY OF THE INVENTION A problem to be solved by the present invention is to provide a non-digging type water supply and sewer repairing system and method capable of quickly inserting a piping repair liner into a piping and rapidly curing a piping repair liner inserted therein, .

Another object of the present invention is to provide a non-digging type water supply and sewerage repair system and method which can rapidly cure the liner in consideration of the steam circulation structure inside the liner.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a non-drilling water supply and sewerage repairing system, comprising: a liner including a thermosetting resin; a fluid pipe connected to both ends of the liner, A manifold for discharging the circulated fluid from the liner, a fluid distributor connected to the manifold and a fluid supply tube to distribute the fluid, and a fluid distributor disposed on the fluid supply tube to sense the temperature and pressure of the fluid, Wherein the fluid is injected into both ends of the liner and the circulation direction is switched at a central portion of the liner.

According to an aspect of the present invention, there is provided a non-drilling water and sewage repair method, comprising: checking and analyzing a repair section in a pipe; removing an obstacle in the repair section; Attaching a manifold for fluid injection and fluid circulation to both ends of the liner, a fluid distributor connecting one end of the fluid supply pipe to the manifold and the other end for supplying the first fluid and the second fluid, Connecting the inner surface of the repair section with the liner by injecting the first fluid into the liner, and injecting the second fluid into the liner to cure the liner.

According to the non-excavation type water supply and sewer repairing system and method of the present invention as described above, the following effects can be obtained.

When the liner for repairing the piping is moved to the inside of the piping by the retractor, the camera module and the acceleration sensor can be used in the retractor to precisely move the work, and the twist of the liner can be prevented.

By providing two or more distribution holes in the fluid distributor, it is possible to simultaneously inject compressed air or hot steam at both end sides of the liner, thereby increasing the circulation rate of the fluid inside the liner, and the rapid expansion of the liner And curing can be achieved.

Also, the condensed water formed inside the fluid distributor can be efficiently discharged, and the condensed water that hinders the temperature rise inside the fluid distributor can be effectively removed.

FIG. 1A is a perspective view of a piping constructed by a non-excavated water supply and drainage repair method according to the present invention. FIG.
FIG. 1B is a cross-sectional view taken along the line II-II 'of FIG. 1A.
FIG. 2A is a view showing a configuration of a non-excavation type water supply and sewerage repair system according to an embodiment of the present invention.
FIG. 2B is a partially enlarged view showing the configuration of the valve controller of FIG. 2A. FIG.
FIG. 3 and FIG. 9 are views schematically showing a work according to a non-excavated water supply and drainage repairing method according to an embodiment of the present invention.
FIGS. 10 to 12 are views schematically showing a work according to a non-excavated water supply and drainage repairing method according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

Hereinafter, piping constructed by the unreduced water supply and drainage repair method of the present invention will be described in detail with reference to FIGS. 1A and 1B. FIG. Here, FIG. 1A is a perspective view of piping constructed by the unreduced water supply and drainage repair method of the present invention, and FIG. 1B is a sectional view taken along line II-II 'of FIG. 1A.

In the unreinforced water supply and sewer repairing method applied to the present invention, a liner (L) including a nonwoven fabric impregnated with resin is inserted into a piping 20 to be repaired and cured to form the inside of the piping 20 And is reinforced with the liner (L) to repair the broken pipe (20).

Referring to Figs. 1A and 1B, a liner L is inserted into the inner side of the broken pipe 20. The liner L serves to prevent fluid such as sewage, water, and gas from flowing out of the piping 20 through the broken portion 25 of the piping 20 and to prevent foreign matter from flowing into the piping 20 . The liner L includes a nonwoven fabric P impregnated with a resin and a vinyl C surrounding the outer side of the nonwoven fabric P. Then, the liquid resin is impregnated into the double-folded nonwoven fabric (P). The inner tube of the pipe 20 is formed by covering the outer surface of the nonwoven fabric P impregnated with the resin with the vinyl C and inserting it into the pipe 20 and then hardening the resin.

The vinyl C covers the nonwoven fabric P when the air is filled in the nonwoven fabric P and the nonwoven fabric P expands. That is, the cover surrounding the nonwoven fabric P is not limited to the vinyl (C), and various materials such as polypropylene and polystyrene which can be used as the covering material of the nonwoven fabric P may be used. Particularly, it is possible to use a cover formed of a heat insulating material so that the resin can be cured even at a very low temperature depending on the construction environment.

The unreinforced type water and sewage repairing method using the manifold 90 used for expanding and hardening the liner L and the liner L will be described later in detail.

Hereinafter, a non-excavated water supply and drainage repair system according to an embodiment of the present invention will be described with reference to FIGS. 2A and 2B. FIG. FIG. 2A is a diagram showing the construction of a non-excavated water supply and drainage repair system according to an embodiment of the present invention, and FIG. 2B is a partially enlarged view showing the construction of the valve controller of FIG. 2A.

The unshrunk water supply and drainage repairing system according to the present embodiment includes a liner L including a thermosetting resin and a liner L connected to both ends of the liner L. The fluid is injected into the liner L for circulation, And a fluid distributor 2000 connected to the manifold 90 and connected to the fluid supply pipe to distribute the fluid and a fluid distributor 2000 disposed on the fluid supply pipe to sense the temperature and pressure of the fluid, And a valve controller 2100 for controlling the supply of the fluid, and the fluid is injected into both ends of the liner L to change the circulation direction at the center of the liner L.

The manifold 90 is connected to both ends of the liner L and has a cylindrical body, a clamping member which is located on the outer diameter side of the body and fixes one end of the liner L, A fluid outlet formed on one side of the body for discharging the fluid to the outside and a condensed water outlet formed on one side of the body for discharging the high pressure condensate formed inside the liner L to the outside .

A pair of manifolds 90 are connected to the fluid distributor 2000 through a fluid supply line to receive fluid and the fluid is supplied to the inside of the liner L through the fluid inlet and fluid outlet of the manifold 90. [ And then discharged to the outside.

The fluids herein may include, but are not limited to, water, air, water vapor, high pressure steam, etc., and other fluids that may be used to inflate the liner (L) or cure the liner (L) .

The fluid distributor 2000 includes a chamber having a predetermined internal space, a first fluid supply unit for supplying air into the chamber, a second fluid supply unit for supplying a second fluid into the chamber, A distributor for distributing the fluid or the second fluid to the outside, and a condensed water discharger for discharging the condensed water condensed in the chamber to the outside, and the distributor may include a plurality of spaced distribution holes.

The chamber has a predetermined space therein and is shown in a rectangular shape in the illustrated example, but is not limited thereto. One side of the chamber may have a first fluid supply part for supplying the first fluid into the chamber and a second fluid supply part for supplying the second fluid, or may be provided on different surfaces of the chamber. Further, the first fluid or the second fluid may be supplied into the chamber through one fluid supply portion. Although the first and second fluid supply portions are shown in a cylindrical shape, their shapes can be changed. For example, the first fluid may be compressed air and the second fluid may be high temperature steam, but the present invention is not limited thereto. The first fluid may be high temperature steam, the second fluid may be compressed air, ) Can be used.

The supplied fluid can be circulated inside the chamber, and the fluid can be discharged to the outside through the connected fluid supply pipe when the distribution hole of the distribution unit is opened. The dispensing portion may include a plurality of spaced apart distribution holes, each of which may be connected to a fluid supply line to be connected to a predetermined location of the liner (L) to provide the fluid to the liner (L).

The first fluid supply part or the second fluid supply part may be formed on different surfaces of the distribution part and the chamber.

The condensed water discharge part can discharge the condensed condensed water from the inside of the chamber to the outside. The temperature inside the chamber is kept at room temperature before the steam supply. When the high temperature steam is supplied, the steam is condensed by the initial temperature difference, and condensed water can be formed inside the chamber. The condensed water thus formed may delay the fluid circulation inside the chamber and the rise of the internal temperature, so that the process of removing the condensed water may be required. The condensate discharge part is formed adjacent to the bottom surface of the chamber, and a part of the condensed water discharge part can be connected to the bottom surface of the chamber.

The valve controller 2100 may be disposed on the fluid supply line to sense the temperature and pressure of the fluid and to selectively control the supply of the fluid. The valve controller 2100 may be disposed at any location between the fluid distributor 2000 and the manifold 90 of the liner L. [

Referring to FIG. 2B, a control valve 2110 is provided at one end of the valve controller 2100 to cut off the supply of the fluid. The control valve 2110 may be a configuration that is controlled by an electronic signal and may be a manual control scheme that allows the operator to monitor the temperature and pressure to allow the supply of fluid if an abnormal situation is captured or the appropriate temperature / .

The body of the valve controller 2100 may be equipped with a thermometer 2120 and / or a pressure gauge 2130 and may measure the temperature and pressure of the fluid supplied from the fluid distributor 2000. After the operator or the like confirms the measured result, it is possible to decide whether or not to supply the fluid to the liner (L).

Hereinafter, a non-excavated water supply and drainage repairing method according to an embodiment of the present invention will be described with reference to FIGS. 3 to 9. FIG. FIG. 3 and FIG. 9 are views schematically showing a work according to a non-excavated water supply and drainage repairing method according to an embodiment of the present invention.

The unreinforced water supply and drainage repair method according to an embodiment of the present invention includes the steps of checking and analyzing a repair section in a pipe, removing an obstacle in a repair section, inserting a liner into a repair section, Coupling a manifold for fluid injection and fluid circulation, connecting one end of the fluid supply line to the manifold and the other end to a fluid distributor for supplying a first fluid and a second fluid, Adhering the liner to the inner surface of the repair section, and injecting a second fluid with the liner to cure the liner.

Specifically, referring to FIG. 3, as a preliminary preparation process for repairing the piping 20, the inside of the piping 20 is irradiated to check whether the piping 20 is damaged, and a repair position is determined. As a method of irradiating the interior of the piping 20, a robot equipped with an endoscope or a camera may be inserted to visually confirm a damaged part. The endoscope or the robot may be inserted through the manholes 40a and 40b, and if necessary, a part of the pipe 20 may be inserted and inserted.

If it is determined that the piping 20 needs to be repaired during the irradiation of the piping 20, the inside of the piping 20 may be cleaned for a repair work. Specifically, the upstream pipe 21 may be blocked by the water receiving apparatus 60 in order to prevent the introduction of water or sewage into the piping 20 to be operated. Then, the interior of the pipe 20 can be cleaned by spraying high-pressure cleaning water into the pipe 20 using a high-pressure injector or the like. The inside of the pipe 20 can be cleanly cleaned by sucking foreign substances or sediments together with the spraying of the washing water by the high-pressure injector.

In addition, it is possible to remove obstacles that may interfere with the operation of the inside of the piping 20 for repairing the piping 20. Here, the obstacle obstructing the work means that the protruding portion of the branch pipe 30 protrudes into the inside of the pipe 20 to form the concave and convex on the inner surface of the pipe 20. In order to insert the liner (see L in Fig. 1A) into the pipe 20, it must be maintained uniformly on the inner surface. At this time, the operation of removing the obstacle can be changed depending on the diameter of the pipe 20. That is, the maintenance of the piping 20 having a diameter enough for the operator to directly enter can be performed by the operator, and the diameter can not be entered by the operator, or the internal environment is dangerous. If there is no robot, the work robot can be used. A cutting tool may be attached to the work robot to remove any obstacle inside the pipe 20.

Then, the liner L for repairing the pipe 20 can be manufactured in the field, and the previously prepared liner L can be supplied. If the length or width of the liner L required in the course of the above-described piping 20 irradiation is determined, the liner L may be directly manufactured in the form of a fitting in the field. At this time, the liner (L) can be manufactured by using the liner manufacturing apparatus (10). The liner manufacturing apparatus 10 can be used by being mounted on a moving means such as a vehicle, and can be used after being fixedly installed in the field. The liner L can be manufactured immediately before insertion into the pipe 20 in consideration of the pot life of the resin. The manufactured liner (L) can be bound to the manifold (90). The liner (L) may include a nonwoven fabric impregnated with a thermosetting resin.

Referring to FIG. 4, the liner L is inserted into the pipe 20. The liner L may be inserted into the pipe 20 by the retractor 50 connected to the manifold 90 but the liner L may be inserted directly into the pipe 20 in the state where the manifold 90 is not fastened, Can be fixed to the retractor (50) and pulled into the underground pipe (20). The liner L previously manufactured in the field can be connected to the retractor 50 and inserted into the pipe 20 but the liner manufacturing equipment 10 is installed on the site so that the pipe 20 ). ≪ / RTI > That is, the liner L is manufactured in the apparatus for manufacturing a liner L and is directly connected to the manifold 90 and / or the retractor 50 without being taken up by a separate collecting unit (not shown) ). ≪ / RTI > In this way, the working time can be shortened. That is, one end of the liner L may be coupled to the retractor 50 to move the liner L to a predetermined position inside the pipe.

The retractor 50 further includes a camera module so that the inside of the pipe 20 and the liner L can be monitored externally, and the image captured by the camera module can be transmitted to an external monitor device.

That is, the retractor 50, which is coupled with one end of the liner L and moves the liner L to a predetermined position inside the pipe, is inserted into the repair section, and the retractor 50 ).

In addition, the retractor 50 is provided with a sensor capable of measuring the tilt or acceleration information of the retractor 50, so that information sensed by the sensor can be transmitted to the outside. If the retractor 50 is overturned, it can be quickly detected from the outside and measures can be taken. That is, the retractor 50 can be controlled based on the inclination information of the liner L inside the pipe.

The retractor 50 is connected to a driving means such as a winch 72 disposed inside or outside the pipe 20 by connecting means such as a wire, so that the moving direction and the moving speed can be controlled.

The winch 72 and the monitor device 71 may be integrally formed as shown in the figure but the present invention is not limited thereto and the winch 72 can be controlled by an operator who controls the winch 72, (72) may be arranged close to the monitor device (71).

5, when the liner L is inserted into a predetermined pipe 20, the manifold 90 is connected to both ends of the liner L, and air or compressed air is supplied through the manifold 90 To inflate the liner (L). At this time, the air injected into the liner L expands the liner L to closely contact the liner L inside the pipe 20, and keeps the liner L in the same shape as the pipe 20. When the low temperature curable resin is used for the liner L, the resin impregnated in the nonwoven fabric may be first cured by injecting air at room temperature into the liner L. At this time, the manifold 90 may be connected to one end of the liner L.

For example compressed air, distributed by the distributor 2000 into the liner L through the manifold 90 fastened to both ends of the liner L. [ In this process, before the fluid dispensed by the distributor 2000 is injected into the liner L through the manifold 90, the temperature, pressure, and the like are checked. A valve controller 2100 may be provided to check the condition and selectively block the supply of fluid.

The expanded liner L may then be maintained for a period of time to cure the resin contained in the liner (L). The curing time of the resin may vary depending on the thickness and diameter of the liner (L), and may vary depending on the composition ratio of the materials contained in the resin. The time for performing the curing may vary depending on the composition ratio of the substance contained in the resin. The curing may be performed at a temperature of 100 to 180 ° C, and may be a method of injecting high temperature steam into the liner L through the manifold 90.

When the high-temperature steam is injected through the manifold 90 provided on both sides of the liner L along the fluid supply pipe in the fluid distributor 2000, the high-temperature steam is introduced into the liner L in a certain direction The high temperature fluid causes the liner L to gradually cure, and the fluid circulation can be repeated for a predetermined time to complete the curing operation. That is, the fluid can be injected into both ends of the liner (L), and the circulation direction can be switched at the center side of the liner (L).

In some other embodiments, in the course of curing the liner (L), it may further comprise supplying fluid into the liner (L) using a through hole passing through the center of the liner (L).

As shown in FIG. 8, condensate CW may be generated in the inner liner L by the initial temperature inside the liner L and the temperature difference of the fluid supplied to the liner L, for example, And may become rigid on the lower side of the liner L along the direction of gravity.

When the condensed water (CW) is generated, the liner (L) in the portion where the condensed water (CW) flows is slower than the portion where the condensation speed is different, so that irregular hardening may occur or distortion or damage may occur.

9, the condensed water CW can be discharged to the outside of the liner L by opening the condensed water outlet 915 in the manifold 90 provided at both ends of the liner L. [

In some other embodiments, a condensate discharge pipe is inserted into the condensate discharge port 915 of the manifold 90, a part of the condensate discharge pipe can be inserted into the liner L, And a predetermined weight may be added to the end portion. Therefore, even if the liner L or the manifold 90 rotates to change the position of the condensed water in the cylindrical liner L, the condensed water and the condensed water discharge pipe move in the same direction due to gravity, Can always be maintained in a state of being settled in the condensed water, thereby facilitating the discharge of the condensed water.

Hereinafter, an unreduced water supply and drainage repair system and method according to another embodiment of the present invention will be described with reference to FIGS. 10 to 12. FIG. FIGS. 10 to 12 are views schematically showing a work according to a non-excavated water supply and drainage repairing method according to another embodiment of the present invention.

10, the fluid dispenser 2000 is substantially the same as the un-drilled water supply and drainage repair system and method according to the present embodiment, and the fluid distributor 2000 is connected to the center of the liner L to add fluid into the liner L To the fluid supply pipe. In the illustrated example, a fluid addition pipe is connected to the central portion of the liner L from the fluid distributor 2000, but the present invention is not limited thereto. The fluid addition pipe may be disposed at any position on the liner L . It is also contemplated that two or more fluid addition tubing may be connected such that the fluid is dispensed from fluid distributor 2000 to three or more fluid tubing / fluid addition tubing.

As shown in FIG. 10, air can be injected into the fluid addition supply tube to rapidly expand the liner L.

Further, as shown in Fig. 11, high temperature steam can be injected into the fluid addition pipe to quickly cure the liner L.

12, when the hardening of the liner L is completed, it is possible to finish the repair work by cutting the hardened liner L in accordance with the length and size of the pipe 20.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

10: piping maintenance liner manufacturing apparatus 20: piping
40a, 40b: Manhole 50: Retractor
60: order device 90: manifold
2000: Fluid distributor 2100: Valve controller

Claims (18)

A liner comprising a thermosetting resin;
A manifold connected to both ends of the liner for injecting and circulating fluid into the liner and discharging the circulated fluid from the liner;
A fluid distributor connected to the manifold via a fluid supply pipe to distribute the fluid; And
And a valve controller disposed on the fluid supply pipe to sense the temperature and pressure of the fluid and to control the supply of the fluid,
Wherein the fluid is injected into both ends of the liner and the circulation direction is switched at a central portion of the liner. The method according to claim 1,
Further comprising a retractor coupled to one end of the liner to move the liner to a predetermined location within the pipeline. 3. The method of claim 2,
Wherein the retractor includes a camera module that provides an image of the liner inside the tubing to the exterior. 3. The method of claim 2,
Wherein the retractor includes an acceleration sensor for providing tilt information of the liner inside the pipe to the outside. The method according to claim 1,
Wherein the manifold further comprises a condensate outlet for discharging the condensed water generated in the interior of the liner. 6. The method of claim 5,
And a condensed water discharge pipe inserted into the condensed water discharge port,
And a part of the condensed water discharge pipe is inserted into the liner. The method according to claim 6,
And a predetermined weight is added to an end of the condensate discharge pipe on the inner side of the liner. The method according to claim 1,
Wherein the fluid distributor is connected to a fluid addition supply pipe connected to a central portion of the liner to further supply the fluid into the liner. The method according to claim 1,
Wherein the fluid comprises air or water vapor. Checking the repair section in the piping and analyzing the repair section;
Removing an obstacle in the repair section;
Inserting the liner into the repair section;
Coupling manifolds for fluid injection and fluid circulation to both ends of the liner;
Connecting one end of the fluid supply pipe to the manifold and the other end to a fluid distributor supplying the first fluid and the second fluid;
Injecting the first fluid into the liner to closely contact the inner surface of the repair section with the liner; And
And injecting the second fluid into the liner to cure the liner. 11. The method of claim 10,
Further comprising grinding an inner surface of said repair section. 11. The method of claim 10,
Wherein the liner comprises a nonwoven fabric impregnated with a thermosetting resin. 11. The method of claim 10,
Wherein the first fluid is air and the second fluid is water vapor. 11. The method of claim 10,
The step of inserting the liner comprises:
And a retractor coupled to one end of the liner to move the liner to a predetermined position inside the piping is inserted into the repair section. 15. The method of claim 14,
Further comprising the step of controlling said retractor based on an image of said liner inside said tubing. 15. The method of claim 14,
Further comprising the step of controlling the retractor based on the slope information of the liner inside the piping. 11. The method of claim 10,
The step of curing the liner comprises:
And discharging the generated condensed water to the inside of the liner. 11. The method of claim 10,
The step of curing the liner comprises:
Further comprising the step of supplying the second fluid to the inside of the liner by using a through hole passing through the center of the liner.

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