KR20050122953A - Method of regenerating a corroded water supplying pipe - Google Patents

Abstract

Inspect the inside of the conduit 1 by inspecting the inside of the conduit 1 while driving by inserting the inspection robot 110 with the camera 111 and the light 112 attached to the inside of the old conduit 1. In accordance with the internal inspection step (S1) and the damage and sludge accumulation information in the internal pipe (1) provided in the internal inspection step (S1) to rotate while rotating the polishing unit 121 is formed with a polishing roll (121c) Grinding step (S2) to remove the sludge with the polishing robot 120, and the pinhole which is the damaged part inside the pipeline 1 in the state of removing the sludge in the pipeline 1 in the removal step (S2) polishing roll (121c) A surface treatment step (S3) for surface-treating the inner surface of the conduit 1 to a uniform surface with a polishing robot 120 having a polishing roll 121c formed thereon so as to smooth the surface by polishing by rotation of In step S3, the paint is applied at a high pressure to the front surface inside the pipe line 1 surface-treated. Install the nozzle 131 and the camera 132 for rotational injection to form a nozzle rotation unit 133 coupled to rotate the injection nozzle 131, the nozzle rotation unit 133 to the arm 134 arm drive motor In combination with the 135, the nozzle rotating unit 133 is formed to operate up and down in accordance with the drive of the arm drive motor 135, and the driving motor 136 and the wheel 137 is formed at the bottom to form a self-driving While observing the surface of the conduit 1 with the camera 132, the center and the center of the conduit 1 are adjusted by adjusting the angle and position of the injection nozzle 131 injected at high pressure by the operation of the arm 134 and the nozzle rotating part 133. Painting step (S4) for painting the inside of the pipeline 1 by spraying a solvent-free hardening paint in water accurately, and after coating the surface of the inside of the pipe (1) in the coating step (S4) Curing step (S5) and the curing in a predetermined time, the curing step (S5) of the paint After life is characterized in that the water passage passing water comprises a water passage test of step (S6) to check whether available as drinking water.

Description

Method of regenerating old pipe for water {Method of regenerating a corroded water supplying pipe}

The present invention relates to a method for rehabilitation of old pipes for water supply, and more specifically, all the work from the internal inspection, the proposal, and the painting are constructed by using a self-propelled robot, and the construction speed is fast and no manpower is introduced into the pipeline. It is carried out in a dry state, by collecting dust from by-products to minimize environmental pollution, enhance durability, reduce the drying process, increase the construction speed, and use the spraying robot to check the inside of the pipeline with a camera to paint the underwater hardening of solventless materials. Since it is coated using, condensation and peeling phenomenon are minimized after coating, it can be applied regardless of the weather, and it is cured in water, which shortens the construction time and it is coated with non-toxic and odorless paint. It provides a method for rehabilitation of old water pipes for rehabilitation of old pipes to solve the problem.

In general, the water formed to supply water for homes and buildings and to discharge used water is divided into water supply and sewage.

The tap water refers to a systematic water supply system whose main purpose is health and hygiene and fire extinguishing. Generally, the tap water refers to tap water, but it is called tap water when distinguished from sewage and industrial tap water. In the water supply method, it is a condition of water supply to supply a drink by a pipe. There are three types of water supply. Water supply population of 5,000 or more is called water supply, water supply of 5,000 or less is called simple water supply, and private water supply to 100 people, such as dormitories and houses, is called dedicated water supply.

This capital is not only absolute in urban life and industrial production, but also brings great health benefits. In other words, when the water supply spreads, endemic diseases, eye diseases, and infant mortality rates are greatly reduced, including infectious diseases of the digestive system such as typhoid fever, cholera, and dysentery. On the other hand, when poorly managed, infectious germs can be exploded through the water.

The water pipe through which the tap water flows is not stagnant in water, and the commercial water pressure flows for a long time at a very high flow rate of 4 to 10 kg / cm ² , so that the sealing material applied to the surface inside the pipe is lost within a few months. When the surface of the pipeline is exposed to flowing water, hydrogen ion concentration (PH) is caused by contact with carbon dioxide gas in the air, chlorine ion (Cl-) in tap water, or water flowing under pressurized water. ) If it is lower than 11, rust occurs, and when rust occurs, 2.5 times the volume of iron expands due to rust, causing destruction or cracking of rust-proofing material applied inside the pipeline. In case of water pipe, the lining thickness is very thin. Therefore, a problem arises in that green water is eluted between the voids, and thus the purpose of preventing the green water is lost.

In addition, domestic tap water is injected with a large amount of chlorine according to season and environment of raw water (intake source) for sterilization, so that chlorine ion (Cl-) in tap water is 1.0 ~ 2.0ppm in summer and winter. Inject about 0.8 ~ 1.5ppm and the end of the tube (faucet) is about 0.2ppm remaining to sterilize.

Therefore, the amount of chlorine dissipated in the water pipe passing through is 0.8 ~ 1.8ppm, which dissolves calcium hydroxide by reacting with calcium hydroxide in mortar lining, penetrates into the exposed water pipe, makes pores larger, generates rust, and abrasion of water equipment. The phenomenon of letting is detected.

As described above, after a certain period of time, rust and abrasion occurred inside the water pipes, and odors and toxicity were detected in the tap water, which caused serious problems in drinking water. As it should be, a lot of equipment and manpower is required, and the construction period is long, the inconvenience of blocking the water for a long time is increased, there was a problem that the cost of construction cost and water blocking increases.

Accordingly, in recent years, various methods for rehabilitation without replacing old pipes have been developed and implemented. The method includes cement mortar lining, polyethylene lining, and epoxy lining.

The cement mortar lining method is a method used to form a high-strength cement mortar lining through the drying process after spraying the pre-kneaded cement mortar after the customs (하는 管) to remove foreign substances in the tube as the most commonly used method As it has a structural reinforcing effect, it can be applied to a pipe body in which pinholes are generated, and has a relatively long experience and track record of high reliability, prevents corrosion, and can be constructed in wet surfaces.

However, the cement mortar lining method takes a long time for hardening and curing after spraying, so that the actual curing work takes a lot of time, and the short time is long, and the finish is not successful in the small diameter tube. There is a difference, and when the lining work continues to penetrate the existing water inlet chip penetration there was a problem that the construction is difficult.

The polyethylene lining method is a technique to improve the expansion of the tube using the characteristics of high-density polyethylene, which is inserted into the existing tube, and expands and fusion-bonds the polyethylene pipe through the pressure of steam and high pressure air, there is a structural reinforcing effect It can be applied to the tube where pinholes are generated and has a very long service life.

However, the polyethylene lining method should be excavated construction of the branch pipe and more than 45 ° bent pipe, and the most expensive of the construction method is the same as the replacement cost in the case of small diameter pipe, the construction is impossible because of the heat fusion in winter There was a difficult problem.

In the epoxy lining method, after the tubing operation to remove foreign substances in the pipe, the epoxy and the hardener are mixed with a liquid epoxy resin having a suitable viscosity, and the coating film is sprayed on the inner surface of the pipe by a high-speed centrifugal force through the spray head. It is formed inside, the construction cost is low, the construction period is short, can be installed in the bend pipe and injection pipe, etc., there is little difference in water supply capacity.

But. When the epoxy lining method is applied in a state where it is not completely dried, the "amine" component contained in the curing agent elutes and is contained in the tap water, which may be harmful to the human body due to its toxicity. Due to the difficulty in forming a uniform coating film is difficult to apply, there was a problem that the coating film can be removed due to the possibility of pinholes after the epoxy coating.

In order to solve the problems, the main object of the present invention is to use the self-propelled robot equipped with a camera to mechanically remotely operate the pipeline to observe the inside of the pipeline with a camera while inspecting the inside of the pipeline with an internal inspection, tapping, surface treatment and painting work. By doing this, the operator does not enter the inside of the pipeline is safe, and as the work is checked while checking all sides by the camera, the painted surface is flat, thereby minimizing leakage due to the peeling of the pipeline, thereby increasing the coating efficiency.

In addition, another object of the present invention is to observe the pinholes and rust generated in the tube surface of the old tube closely by the camera while performing the deburring operation and surface treatment operation by the self-propelled robot while rotating the polished roll is formed in the aged tube. While forming the painted surface by rotating and removing the polishing part, it minimizes the voids inside the coating, increases the flatness of the painted surface, and the frictional heat generated by the friction between the abrasive and the pipe during surface treatment increases the curing speed after spraying the paint. It is to increase work efficiency and painting efficiency by minimizing peeling phenomenon by increasing.

In addition, another object of the present invention is to separate the sludge and dust generated by connecting the air compressor to the robot with an abrasive material for decontamination and surface treatment to discharge the sedimentation process in a dry state to separate the process Since it is not necessary, it saves time and cost according to the drying process and continuously collects while running to prevent foreign substances from remaining on the surface treatment surface of the pipe. To reduce the cost of rehabilitation by reducing the process.

In addition, another object of the present invention is a self-propelled paint robot having a camera and a high-pressure air spray rotary spray nozzle formed inside the old tube subjected to decontamination and surface treatment, while observing the surface treated portion of the old tube by a strong spraying nozzle. By precisely spraying in the center of the pipeline to improve the adsorption power of the paint, even coating is formed inside the pipeline to minimize peeling after construction, and easy to control the injection pressure, nozzle rotation, coating speed, coating thickness, etc. Since it is sprayed with particles, it is possible to suppress the generation of pinholes on the painted surface and to coat the pinholes generated on the surface of the old pipe to increase the coating life.

In addition, another object of the present invention is to apply the coating material for curing the solvent-free underwater in water after painting and surface treatment to the old pipe with a painting robot to perform the painting work, so that the volatile solvent is not used during curing curing of the paint. There is no difference in dry coating film, minimizing the loss of materials caused by solid content ratio, and excellent water affinity, so that it can be painted even in the place of moisture, and curing cures in water, which shortens curing curing time after coating. It prevents condensation and prevents condensation regardless of weather and temperature.It minimizes water shortening time, and it is constructed without being affected by weather and temperature, so it hardens under water without being affected by atmospheric temperature change due to weather. By supplying, the construction period is shortened to minimize the damage caused by the single stage.

In order to achieve the above object, the old water pipe rehabilitation method of the present invention is to test the internal information of the pipeline by inspecting the inside of the pipeline while driving by inserting a test robot equipped with a camera and a light inside the aging pipeline. An inspection step for removing sludge with an autonomous robot, which rotates the polishing part in which the polishing roll is formed in accordance with the inspection step and the damage and sludge accumulation information in the pipeline provided in the internal inspection step; A surface treatment step of surface treating the inner surface of the conduit with a uniform surface by a polishing robot having a polishing roll formed to polish the surface of the pinhole, which is a damaged portion inside the conduit, by rotating the polishing roll with sludge removed; High pressure paint is applied to the front part inside the pipe line surface treated in the surface treatment step. A nozzle rotating unit coupled to rotate the spray nozzle by installing a spray nozzle and a camera to rotate the spray nozzle, and combining the nozzle rotating unit with the arm driving motor by the arm so that the nozzle rotating unit operates up and down according to the driving of the arm driving motor. It forms the driving motor and the wheel at the lower part, and it is formed to run independently. And by observing the surface of the pipe with a camera, it adjusts the angle and position of the injection nozzle sprayed at high pressure by the operation of the arm and the nozzle rotating part. A coating step of coating the inside of the pipeline by spraying the solvent-free curing material in water accurately on the curing step, and a curing step of curing the coating material for the curing of the solvent-free material in water after the coating step in the coating step, and the curing After curing the paint at the stage, pass water to check if the water passed is available as drinking water. It is characterized in that it comprises a checking step.

In addition, the polishing robot used in the decontamination step and the surface treatment step is rotated by coupling the polishing rolls formed on the upper and lower sides of the rotary link rotated in conjunction with the polishing motor to contact the inside of the pipe on the front surface to be interlocked with the polishing motor by interlocking means. The grinding part is formed to polish the surface inside the pipeline while rotating in the opposite direction to the rotary link, and the upper part is formed at the end of the support link so that the support roll contacts the pipeline to prevent the flow of the polishing robot during polishing. A buffer rod coupled with a buffer spring is coupled between the links to form a support for supporting a buffer role, and a lower portion of the lower surface is formed on the front surface of the pipeline by combining the driving wheels with interlocking means to travel independently. Characterized in that it is configured to remove scale and foreign objects while observing with a camera. .

In addition, the polishing robot having a polishing roll for removing scales and performing surface treatment while rotating the polishing unit used in the degreasing step and the surface treatment step is carried out in a dry state and attached to the polished scale and the inner surface of the pipe. The by-product is characterized in that it is configured to continuously collect in the air compressor connected to the dust collector formed on the front surface of the polishing robot to remove foreign substances in the pipeline.

In addition, the paint sprayed by the painting robot in the painting step is characterized in that it is configured to cure in water without using volatile solvent.

Thus, a preferred embodiment of the conduit for rehabilitation of old water pipes of the present invention configured as follows will be described with reference to the drawings.

1 is a process chart showing the old pipe rehabilitation method for tap water of the present invention, Figure 2 is a side view showing an internal inspection step in the water pipe regeneration method for tap water of the present invention, Figure 3 is a side view showing the step of decontamination in the old pipe regeneration method for tap water of the present invention. 4 is a side view showing a surface treatment step in the water pipe regeneration method of the water supply pipe of the present invention, FIG. 5 is a side view showing a coating step in the water pipe regeneration method for water pipes of the present invention, FIG. Figure 7 is a side view showing the curing step, Figure 7 is a side view showing the water test step in the water pipe rehabilitation method of the present invention, Figure 8 is a front view showing the polishing robot of the decontamination step and the surface treatment step in the water pipe regeneration method of the present invention. .

As shown in Figures 1 to 8, the old water pipe rehabilitation method of the present invention is based on the internal inspection step (S1) for inspecting while driving the old pipe (1), and based on the data inspected in the internal inspection step (S1) A surface treatment step (S3) for removing sludge from the inside, a surface treatment step (S3) for smoothly treating the surface in a state in which sludge is removed from the inner surface of the conduit (1) in the removal step (S2), and the surface treatment A coating step (S4) for applying a solvent-free underwater curing paint to the painting robot 130 on the surface flattened in the step (S3), and a curing step (S5) for curing the coating applied in the painting step (S4); After passing through the curing and curing of the paint in the curing step (S5) is configured to include a water test step (S6) to check whether the drinking water can be used as drinking water.

The internal inspection step S1 drives the wheel 114 linked to the motor 113 by inserting the inspection robot 110 with the camera 111 and the light 112 attached to the aging pipe 1. It is configured to inspect while traveling inside the pipeline (1).

The polishing step (S2) is a polishing robot that moves on its own while rotating the polishing unit 121, the polishing roll (121c) is formed according to the damage and sludge accumulation information in the pipeline 1 provided in the internal inspection step (S1) ( 120 to remove the sludge in the pipeline (1).

The surface treatment step (S3) is to smooth the surface by grinding the pinhole, which is a damaged portion in the pipeline 1 in the state of removing the sludge in the pipeline 1 in the deburring step (S2) by the rotation of the polishing roll (121c). The inner surface of the conduit 1 is configured to treat the surface with a uniform surface by the polishing robot 120 having the polishing roll 121c formed thereon.

Here, the polishing robot 120 used in the degreasing step (S2) and the surface treatment step (S3) is coupled to the polishing motor 121a to rotate in contact with the inside of the conduit 1 on the front and bottom of the rotary link (121b) Polishing portion 121c to be polished to the surface in the conduit 1 while rotating in the opposite direction of the rotary link 121b is rotated by coupling the polishing roll 121c formed in the interlocking means 121d to interlock with the polishing motor 121a. (121) is formed on the upper end of the support link (122b) so as to contact the support roll (122a) inside the conduit (1) to prevent the flow of the polishing robot 120 at the time of polishing and the support link (122b) ) Between the buffer rods 122c coupled to the buffer springs 122d to form a support portion 122 supporting the buffer rod, and the driving motor 123a to the interlocking means 123b. 123c) is formed so as to travel independently and the surface inside the pipeline (1) to the front Observe with the camera 126 formed to remove the scale and foreign matter.

In addition, the polishing robot 120 with the polishing roll 121c for removing the scale and performing the surface treatment while the polishing unit 121 used in the degreasing step S2 and the surface treatment step S3 is rotated is dry. By-products attached to the polished scale and the inner surface of the pipeline 1 are continuously collected in the air compressor 125 connected to the dust collector 124 formed on one side of the polishing robot 120 to thereby form the interior of the pipeline 1. Configure to remove foreign substances.

The coating step (S4) is a spray nozzle (131) and the camera 132 by installing a spray nozzle 131 for spraying the coating at a high pressure to the front surface inside the pipe line (1) surface treated in the surface treatment step (S3) The nozzle rotator 133 coupled to rotate the 131 is formed, and the nozzle rotator 133 is coupled to the arm drive motor 135 by the arm 134 so that the nozzle rotator 133 of the arm drive motor 135 is rotated. It is formed to operate up and down in accordance with the drive, the driving motor 136 and the wheel 137 is formed in the lower portion to drive independently, and the camera 132 while observing the surface of the conduit 1 arm 134 And the nozzle rotating unit 133 to control the angle and position of the injection nozzle 131 is injected at high pressure by spraying the solvent-free underwater curing paint precisely in the center of the pipe (1) to paint the inside of the pipe (1) Configure.

Here, the paint sprayed by the painting robot 130 is configured to cure in water without using a volatile solvent.

The curing step (S5) is configured to cure the solvent-free underwater curing paint for a predetermined time after painting the surface inside the pipe (1) in the painting step (S4).

The water flow inspection step (S6) is configured to pass through the water and supply it to the home if it is determined that the water passed through the water in the curing step (S5) when the water passed by passing through the water can be used as drinking water.

Thus, look at the action on the constitution of the old pipe for rehabilitation of the present invention configured as follows.

First, the inspection robot 110, in which the camera 111 and the light 112 are formed, is inserted into the conduit 1, and the wheels 114 are interlocked by the driving of the motor 113 to connect the conduit to the camera 111. While observing the inside of (1) and inspecting the aging degree and scale accumulation information of the pipeline 1 in the internal inspection step (S1), by adjusting the rotary link (121b) to which the abrasive roll (121c) with the abrasive is bonded It is formed so as to be in contact with the upper and lower sides of the pipe (1), by coupling the rotary roll 121b formed in the center of the front portion of the polishing robot 120 and the polishing roll (121c) by the interlocking means (121d) to the polishing motor (121a) While rotating in a reverse direction to each other while observing the inside of the conduit 1 with the camera 126, the polishing roll 121c with the abrasive is rotated while rotating about its own rotation and the rotary link 121b. 1) remove the internal scale, the end of the support link 122b formed to the upper side unfolded Supports the upper part of the polishing robot 120 while buffering the center with the buffer rod 122c having the buffer spring 122d formed between the support links 122b while the formed support roll 122a is in contact with the pipe line 1. To restrain the flow and to smoothly travel with the buffer rod 122c having the buffer spring 122d formed therein, even when driving the rough surface inside the pipeline 1 to prevent damage, and to the camera 126 with the pipeline 1 The step of deburring while observing the inside of the conduit 1 with the camera 126 with the polishing robot 120 which removes the scale and the foreign matter inside the conduit 1 by observing the inside of the conduit 123. Remove the scale in (S2).

Thus, in order to process the rough surface of the surface, such as a pinhole, inside the conduit 1 in a state in which the scale is removed in the deburring step S2, the polishing roll 121c is observed while observing with the camera 126 of the polishing robot 120. Drive to process the surface to surface treatment in the surface treatment step (S3) to a flat surface.

Here, the dehumidifying step (S2) and the surface treatment step (S3) is processed by the polishing robot 120, which is rotated and polished by the polishing roll 121c in a dry state, the air compressor 125 is the scale and foreign matter generated after processing By continuously collecting dust from the connected dust collector 124 to remove foreign matters, the drying process is reduced and foreign substances in the conduit 1 are kept free.

The coating robot 130 having the camera 132 and the high-pressure air spray rotating spray nozzle 131 formed in the pipe 1 after finishing the decontamination and surface treatment as described above is introduced into the pipe to drive the motor 136 and the wheel ( 137 driving the nozzle 134 and the injection nozzle of the solvent-free water-based cured paint supplied from the paint supply unit 138 by the arm drive motor 135 while observing the inside of the pipe 1 with the camera 132. The inside of the conduit 1 is painted in the coating step S4 of spraying at a high pressure while controlling the position and angle of the spray nozzle 131 by rotating the nozzle 131.

Here, in the surface treatment step (S3) in the state in which the friction heat generated due to the friction between the polishing roll 121c and the pipeline 1 remaining in the pipeline 1, the coating robot 130 is introduced to the injection nozzle 131 In order to improve the adhesion of the paint by friction heat by spraying a solvent-free water-based curing paint in the.

In addition, in the painting step (S4), the coating robot 130 is hardened by spraying the paint cured in water without using a volatile material is cured even if water remains in the interior, when the water is not used because the volatile solvent is not used Suppresses the release of pollutants and protects the environment during curing.

In this way, after passing through the curing step (S5) to retard the paint is cured for a predetermined time after coating the water-free curing material paint in the coating step (S4), the water passing through the water in the pipe cured pipe to check whether it is suitable as drinking water When the water passed in the inspection step (S6) is inspected and the water reaches a reasonable value, the old pipe is painted with a solvent-free water-hardening paint to loosen the water in the regenerated state and supply the water supply to complete the construction.

<Example>

In order to prove the effect of the water pipe regeneration method according to the present invention was tested in the pipeline (Φ 3000mm).

9 to 11 are photographs showing the old pipe before the old water pipe rehabilitation method of the present invention, Figures 12 to 14 are photographs showing the decontamination and surface treatment in the water pipe rehabilitation method for water supply of the present invention, Figure 15 to 17 are photographs showing the coating step in the water pipe rehabilitation method for water supply of the present invention, Figures 18 to 20 are photographs showing the interior of the rehabilitation pipe is completed in the water pipe rehabilitation method for water supply of the present invention.

As shown in Figures 9 to 11, before the old pipe rehabilitation method to look at the old pipe can be confirmed that the tap water contaminated materials such as sludge and pinholes remain inside the pipeline, this in the internal inspection step (S1) It confirmed by the inspection robot 110.

12 to 14 illustrate a state in which the inside of the pipe 1 is inspected in the internal inspection step S1 and then subjected to a polishing step S2 and a surface treatment step S3 by the polishing robot 120. Similarly, it was confirmed that sludge and pinholes were removed from the inner surface of the pipe 1 to form a uniform surface.

15 to 17 in the state in which the sludge and the pinhole is removed after the surface treatment step (S3), the coating robot 130 is injected into the pipeline to spray the solvent-free underwater curing paint spray nozzle 131 Spraying) was carried out to the coating step (S4).

After passing through the curing step (S5) to finish the coating step (S4) through a curing step (S5) through the water through the inspection step (S6) to check whether it is suitable as drinking water even after the passage of the pipe shown in Figures 18 to 20 As described above, it was possible to confirm the reinforcement tube that was regenerated by the rehabilitation method.

As a result of the test evaluation, the voids inside the coating were minimized, and the surface to be coated was flat, so that leakage due to peeling of the pipe hardly occurred.

As such, the constitution of the old pipe for rehabilitation of the present invention by using a self-propelled robot equipped with a camera to perform a remote inspection of the pipe interior mechanically while performing the internal inspection, tapping, surface treatment and painting work while observing the inside of the pipe with a camera It is safe because the worker does not enter the inside of the pipeline, and as the work is checked while checking all the surfaces by the camera, the painted surface is flat, thereby minimizing leakage due to the peeling of the pipeline, thereby increasing the coating efficiency.

In addition, by rotating the polishing part with the polishing roll inside the aged pipe, the self-propelled robot performs the deburring operation and the surface treatment operation to rotate the polishing part while closely observing the pinhole and the rust generation part generated on the inner surface of the decommissioning pipe with a camera. By forming the painted surface in the removed state, it minimizes the voids inside the coating, increases the flatness of the painted surface, and minimizes the peeling phenomenon by increasing the curing speed after spraying the paint due to the frictional heat generated by the friction between the abrasive and the pipe during surface treatment. It provides the effect of increasing the work efficiency and painting efficiency.

In addition, the sludge and dust generated by connecting the air compressor to the robot with abrasive material for deburring and surface treatment are collected and discharged in a dry state, so a separate drying process is not required. By reducing the time and cost and continuously collecting dust while driving to prevent foreign matters from remaining on the surface of the pipe, the painting work is carried out while removing foreign matters on the painted surface, reducing the process while improving the coating efficiency and reducing the cost of rehabilitation. Provides the effect of reducing

In addition, the self-propelled paint robot with the camera and the high-pressure air spray rotary spray nozzle formed inside the old pipe subjected to decontamination and surface treatment, while observing the surface-treated portion of the old tube, was precisely positioned at the center of the pipeline by the strong pressure by the rotary spray nozzle By increasing the adsorption power of the paint by spraying, an even coating film is formed inside the pipeline to minimize peeling after construction, and it is easy to control the spray pressure, nozzle rotation, coating speed, coating thickness, etc. It is possible to suppress the generation of pinholes and to coat the pinholes generated on the surface of the old pipe, thereby increasing the coating life.

In addition, after decontamination and surface treatment on old pipes, paints are applied by painting robots without any water, so there is no difference between the humidity film and the dry coating film. It minimizes the loss of materials generated according to the ratio, and has excellent affinity for water, so that it can be painted even in the place of moisture, and it cures in water. Therefore, it shortens the time of curing curing after painting and prevents condensation after painting. It is possible to paint regardless of temperature and temperature, minimizing the short time, and it is constructed without being influenced by weather and temperature, and it is cured in water without being affected by the change of atmospheric temperature according to the weather. It provides the effect of minimizing the damage caused by the singular.

1 is a process chart showing the old pipe rehabilitation method for water supply of the present invention.

Figure 2 is a side view showing the internal inspection step in the water pipe regeneration method of the present invention.

Figure 3 is a side view showing the step of decontamination in the water pipe regeneration method of the present invention.

Figure 4 is a side view showing the surface treatment step in the water pipe regeneration method of the present invention.

Figure 5 is a side view showing the coating step in the water pipe regeneration method of the present invention.

Figure 6 is a side view showing the curing step in the water pipe regeneration method of the present invention.

Figure 7 is a side view showing the water flow inspection step in the water pipe regeneration method of the present invention.

8 is a front view showing the polishing robot of the degreasing step and the surface treatment step in the water pipe regeneration method of the present invention.

9 to 11 are photographs showing the aging pipe before implementing the method for rehabilitation of the aging pipe for water of the present invention.

12 to 14 are photographs showing the decontamination and surface treatment in the water pipe regeneration method of the present invention.

15 to 17 are photographs showing that the coating step is performed in the water pipe regeneration method of the present invention.

18 to 20 are photographs showing the interior of the rehabilitation pipe is completed in the retirement method for old water pipes for the present invention.

* Description of Symbols Representing Major Parts of Drawings *

1: pipeline 110: inspection robot

111: Camera 112: Light

113: motor 114: wheels

120: grinding robot 121: grinding unit

121a: Polishing motor 121b: Rotary link

121c: polishing roll 121d: interlocking means

122: support portion 122a: support roll

122b: support link 122c: buffer rod

122d: buffer spring 123: driving part

123a: travel motor 123b: interlock means

123c: driving wheel 124: dust collecting unit

125: air compressor 126: camera

130: painting robot 131: spray nozzle

132: camera 133: nozzle rotation

134: arm 135: arm drive motor

136: driving motor 137: wheels

138: paint supply

Claims (4)

Inspecting the inside information of the conduit 1 by inspecting the inside of the conduit 1 while driving by inserting the inspection robot 110 with the camera 111 and the light 112 attached to the inside of the old conduit 1. Internal inspection step (S1), The sludge is removed by the polishing robot 120 which moves on its own while rotating the polishing unit 121 in which the polishing roll 121c is formed according to damage and sludge accumulation information in the pipeline 1 provided in the internal inspection step S1. Proposal step (S2) and The polishing roll 121c is polished by rotating the polishing roll 121c to polish the pinhole, which is a damaged portion inside the pipeline 1, in a state in which the sludge is removed in the pipeline 1 in the dehumidifying step S2. A surface treatment step (S3) for surface-treating the inner surface of the conduit 1 to a uniform surface with the formed polishing robot 120; The spray nozzle 131 and the camera 132 are installed to rotate the spray nozzle 131 by installing a spray nozzle 131 for spraying paint at a high pressure on the front surface of the inner surface of the pipe line 1 surface treated in the surface treatment step (S3). The nozzle rotating part 133 is formed, and the nozzle rotating part 133 is coupled to the arm driving motor 135 by the arm 134 so that the nozzle rotating part 133 operates up and down according to the driving of the arm driving motor 135. It is formed, the driving motor 136 and the wheel 137 is formed at the lower portion to be formed to run independently, and while observing the surface of the conduit 1 with the camera 132 of the arm 134 and the nozzle rotating part 133 Painting step (S4) for painting the inside of the pipeline (1) by controlling the angle and position of the injection nozzle 131 that is injected at high pressure by the operation to precisely spray the solvent-free curing material in the center of the pipeline (1), Curing step (S5) to cure the paint for curing the solvent-free in water after coating the surface inside the pipe (1) in the coating step (S4), After the curing of the paint in the curing step (S5) passing through the water passing water inspection step (S6) for inspecting whether the water passed through can be used as drinking water, characterized in that the constitution of the old pipe for water. The method of claim 1, The polishing robot 120 used in the degreasing step (S2) and the surface treatment step (S3) is coupled to the polishing motor 121a so as to contact the inside of the conduit 1 on the front and bottom of the rotary link 121b that rotates. The polishing portion 121c is coupled to interlock with the polishing motor 121a by the interlocking means 121d to interlock with the polishing motor 121a, and rotates in the opposite direction of the rotating link 121b to polish the surface inside the conduit 1. 121 is formed, and is formed at the end of the support link 122b so that the support roll 122a is in contact with the inside of the pipeline to prevent the flow of the polishing robot 120 during polishing, and between the support links 122b. The buffer rod 122c coupled to the shock absorbing spring 122d is coupled to form a support portion 122 supporting the buffer rod, and the driving wheel 123c is connected to the driving motor 123a by the interlocking means 123b. Forming to run independently and combine to form the surface inside the pipeline (1) to the front The observing with a camera 126 for water works nohugwan rehabilitation method characterized in that configured to remove the scale and debris. The method of claim 1, As the polishing unit 121 used in the degreasing step (S2) and the surface treatment step (S3) is rotated, the polishing robot (120) having the polishing roll (121c) attached thereto to remove the scale and perform the surface treatment is placed in a dry state. The by-products attached to the polished scale and the inner surface of the pipeline 1 are continuously collected in the air compressor 125 connected to the dust collector 124 formed on the front surface of the polishing robot 120 to perform the work. Old pipe rehabilitation method for water, characterized in that configured to remove foreign substances. The method of claim 1, The paint sprayed by the painting robot 130 in the painting step (S4) is a water pipe regeneration method, characterized in that configured to cure in water without using volatile solvent.