KR100848177B1 - Centering device have function as cleaning and painting inside of pipe - Google Patents

Abstract

The present invention is to remove the scale layer of the inner surface of the pipeline with a single customs device configured to eject the fluid while rotating the nozzle portion without a separate rotational power by using the repulsive force when the high pressure fluid ejected from the nozzle hit the inner surface of the pipe and The present invention relates to a centering device capable of performing both post-customs painting work.

The present invention, the high pressure fluid supply means; A main body including a plurality of segmented pipes to which the high-pressure fluid supply means are inserted and having a hollow, connecting the segmented pipes, and a pipe connecting member to maintain the center by providing flexible bendability when passing the curved pipes; One end is installed at an outer surface of each segment pipe of the main body at a predetermined angle, and the other end is moved to move the main body back and forth by rolling while contacting the inner surface of the old pipe; And the outer diameter is connected to the distal end of the main body, the inner diameter is connected to the high pressure fluid supply means, and radially has injection nozzles having a deviation from the center at a predetermined interval by the repulsive force when the high pressure fluid strikes the inner surface of the aging pipe. While rotating, it provides a customs and painting centering device including a high-pressure fluid injection means for removing the scale layer of the conduit surface by the blow pressure of the high-pressure fluid is ejected.

Pipeline, customs, coating, non-rotating, high pressure fluid, nozzle, high pressure hose, center holding spring

Description

Centering device have function as cleaning and painting inside of pipe}

1 is a state diagram for cleaning an inner surface when a centering device according to the prior art passes through a curved pipe;

Figure 2 is a front cross-sectional view showing another customs state in the rotation of the centering device according to the prior art.

Figure 3a is an exploded perspective view showing an embodiment of a customs and painting centering device according to the present invention.
Figure 3b is an exploded perspective view showing a detailed configuration of the high pressure fluid injection means in Figure 3a.

Figure 4a is an assembled perspective view of Figure 3a.
Figure 4b is a combined cross-sectional view of the high pressure fluid injection means.

Fig. 5 is a sectional front view showing a state in which the nozzle is rotated by the ejection pressure of the nozzle which is the main part of the present invention.

Figure 6 is a side cross-sectional view for showing the operating state of the centering device according to the present invention.

7 is a state diagram in which a centering device according to the present invention passes through a curved pipe;

Fig. 8 is a sectional view showing the construction of a sprayer which is a main part of the present invention.

9 is a partial cutaway perspective view showing a first exemplary configuration of a mixer for sprayer;

10 is an exploded view showing a second exemplary configuration of a mixer for sprayer;

* Explanation of symbols for main parts of the drawings

2: high pressure hose 4: main body

4a, 4b 4c: 1st to 3rd segment pipe 6: center holding spring

8: Vehicle 10: Nipple Connector

12: high pressure fluid injection means 14: camera head

The present invention relates to a centering device for both a pipe and a paint applied to a non-excavation rehabilitation method of a water pipe. More specifically, the nozzle unit can be rotated using only a fluid injection pressure without the need for a separate rotational power. High-pressure water can be sprayed while maintaining the center of rotation when passing through the curved pipe, and the customs can be used together with the coating work after removing the solidified scale layer deposited on the inner surface of the constant aging pipe with one cleaning machine. It is related with the painting combined centering device.

Generally, medium and large diameter water supply pipes and small diameter water supply pipes, pipes for transferring various fluids such as oil and gas, and sewage pipes for transporting sewage are aged and used for a long time after installation. Various foreign substances contained in the fluid such as water, oil, gas, etc. are deposited on the inner wall surface or rust is generated as the inner surface of the pipe is oxidized, and these solidify to form a scale layer.

As described above, since the scale layer generated by the deposition of foreign matter on the inner surface of the fluid pipeline is gradually thickened and solidified with time, there is a problem of hindering the smooth flow of the fluid and lowering the fluid pressure. Since the scale layer is dissolved in the fluid and contaminates the fluid, the pipe should be cleaned periodically.

In addition, the problems caused by the aging of the pipeline not only causes a major obstacle in maintaining the function of the water and sewage pipe network, but also has a significant result of increasing energy consumption.

Therefore, in order to solve problems such as corrosion products and pipe breakage inside the pipe, improvement work (replacement or rehabilitation) on the old pipe is carried out.In the old water pipe rehabilitation method applied to the pipeline improvement work, customs (cleaning) and lining This is representative.

In the process of rehabilitation of old water pipes, the process is largely composed of four types, and the process description is as follows.

The first customs process: The buried old pipe is cut into pieces with a length of 60 to 80m in one section, and then cut and opened, and the customs devices such as scrapers, wire brushes, high-pressure water cleaners, etc. are repeatedly drawn and pulled to the power winches. Pull out the tube attachment scale and drain it out of the tube.

Second drying process: When the scale inside the tube is removed, water accumulated in the tube is removed, and then air is transferred to a blower to dry the inside of the tube. The air temperature at this time rises to 30-40 degreeC by the frictional resistance of air.

3rd epoxy lining process: When the surface inside the pipe is dried, put the painter's lake into the inside of the pipe, install the paint sprayer, and finish painting by adjusting the coating speed so that the film thickness is 1 ± 0.3mm.

Assembling and watering process of the 4th pipe: When the epoxy resin paint is completely hardened, after cleaning the inside of the pipe, connect the pipe incision and pass it through and fill the soil according to the regulations to complete the rehabilitation work.

In the pipe cleaning method of the series of old water pipe regeneration process, a method for removing the scale layer deposited on the inner surface of the fluid pipe has been proposed and used.

The customs method includes a method in which a scraper method for dredging the sediment by dragging the device and a water jet method using high pressure water are rushed, and the polypig is rushed by high pressure to scale the inner surface of the pipe. Poly pigs (Poly pigs) method to remove the layer has been developed, these methods are generally carried out as a pre-treatment of pipe lining.

Among the proposed customs methods, the method using the scraper and the water jet has a problem that the customs work is cumbersome and takes a long time because the customs are performed through the repeated scraper and the water jet work several times. In addition, the method is limited to the diameter that the scraper can accommodate the cleaning of the conduit, there is a problem that is not suitable for the tubing of large diameter pipelines of 700mm or more.

In particular, the solidified scale layer due to long-term deposition on the inner wall surface of the pipeline, that is, the solidified scale layer that cannot be removed even by scraper, or the mortar or the impregnated concrete connection pipe that flows from the construction site, etc., is not removed by the above method. Not only that, obstacles such as scale layers, mortars, etc. present in the pipeline restrict the movement of the scraper and the waterjet device itself, thereby increasing the difficulty of continuing dredging.

The polypig method, which is widely used as a mechanism for removing scale while transferring to the fluid pressure in a pipeline, is effective for removing the scale layer in the pipe because the polypig moves forward in a spiral direction due to the propulsion of the fluid pressure. Is suitable for small pipes, and includes a problem that cannot be applied to a method for removing a scale layer stuck to a large diameter pipe of 700 mm or more.

In addition to the customs method as described above, there is disclosed a customs device using a non-powered rotation that is towed while rotating with no power by varying the angle of the high-pressure water jet nozzle, briefly described with reference to Figures 1 and 2 as follows.

As shown in the figure, the moving body 200 is provided with a fluid transfer pipe of a predetermined length for transporting the high pressure fluid from the outside to move in the aging pipeline 100; It is installed in front of the fluid transfer pipe of the mobile body 200 to eject the high-pressure water spray nozzle 300 for removing the scale layer grown on the inner surface of the pipeline 100 and the traction device for towing the mobile body 200 It consists of 400.

In the case of the customs device using the non-powered rotation, for example, when the diameter of the pipe is reduced, for example, when the diameter is reduced from 900 mm to 850 mm, or when it passes through a curved pipe having a predetermined radius of curvature, the moving body of the customs device and the center of the pipe do not coincide with each other. At this time, if the eccentricity error interval between each nozzle tip and the pipe surface is different by t1> t2 in the drawing, the high pressure water is applied to the pipe surface according to the different eccentricity error between the pipe surface and the nozzle tip. Since the impact pressures are different from each other, the rotation of the nozzle is not smooth, and there is a problem in that the scale layer is removed from the conduit surface. The problem that the nozzle is not rotated smoothly can cause damage by acting as a cause of the support for supporting the moving wheels, and the mobile body 100 may be overturned, so that customs work cannot be performed. Cause. In addition, when the eccentricity error (t) is too large, a case that hits the pipe surface of the nozzle tip also occurs, in this case, because the nozzle tip does not hit the pipe surface can not be rotated itself, the actual customs work can be There is no other problem.

On the other hand, the conventional old water pipe rehabilitation process has the trouble of having to use dedicated equipment for each customs and painting work, there is a problem that the cost is expensive to purchase these equipment.

In the case of the painting work, since the nozzle is released from the center when passing through the curved pipe of the old pipe, the paint spraying distance of the pipe is different and there is a problem that uniform coating is not made.

Therefore, the present invention has been proposed to solve the above problems, by using the repulsive force when the high-pressure fluid ejected from the nozzle hit the inner surface of the pipe by using the repulsive force of the nozzle portion without rotating the rotating fluid It is an object of the present invention to provide a customs and painting centering device capable of performing a post-treatment painting work by using the customs equipment at the same time as removing the scale layer of the inner surface of the pipeline with a single customs equipment configured to eject.

In addition, the present invention is to uniform blow of the high-pressure fluid ejected from the injection nozzle by matching the center between the main body and the aging pipe, even when passing through the pipe having a change in diameter, such as a curved pipe having a predetermined radius of curvature, or reduced diameter or enlarged diameter Another object of the present invention is to provide a centering device for both a pipe and a paint, which can provide pressure to the pipe surface and prevent the mobile body from overturning by the ejection pressure of the high pressure fluid.

In addition, the present invention is continuously unrestricted by the movement of the scale layer by removing the scale layer attached to the inner surface of the pipeline by ejecting a high-pressure fluid from the nozzle portion that rotates while the moving body moves backward by the traction device It is possible to perform the washing operation, and also to attach and detach the customs nozzle and the painting nozzles respectively at the front end of the mobile body to provide a customs and painting centering device that can be used together with the customs and painting work in one equipment There is another purpose.

The present invention to achieve the above object, high pressure fluid supply means; A main body including a plurality of segmented pipes to which the high-pressure fluid supply means are inserted and having a hollow, connecting the segmented pipes, and a pipe connecting member to maintain the center by providing flexible bendability when passing the curved pipes; One end is installed at an outer surface of each segment pipe of the main body at a predetermined angle, and the other end is moved to move the main body back and forth by rolling while contacting the inner surface of the old pipe; The outer diameter is connected to the distal end pipe of the main body, the inner diameter is connected to the high pressure fluid supply means, and radially has injection nozzles having a deviation by a predetermined distance from the center so that the high pressure fluid strikes the inner surface of the aging pipe. High pressure fluid injection means for removing the scale layer of the conduit surface by the blow pressure of the high pressure fluid is ejected while rotating by; And after the completion of the customs process, fastened in place of the high-pressure fluid injection means connected to the distal segment pipe of the main body, and combined with the customs and painting, including painting means for spraying the lining paint on the tubular pipe while rotating with its own power Provide a centering device.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings of FIGS. 3 to 10.

Centering device for both customs and painting according to the present invention removes the scale layer of the conduit surface by using the nozzle part rotating by the repulsive force when the high-pressure fluid ejected from the nozzle strikes the conduit surface without additional rotational power. By offsetting the eccentric error generated when passing through the extension pipe section and the curved pipe so that the center of the moving body is always located at the center of the pipe line, it is possible to use a combination of uniform customs and painting work.

Figure 3a is an exploded perspective view showing one embodiment of a customs and painting centering device according to the present invention, Figure 3b is an exploded perspective view showing a detailed configuration of the high-pressure fluid injection means in Figure 3a, Figure 4a is an assembled perspective view of Figure 3a 4B is a cross-sectional view of a combined high pressure fluid injection means, FIG. 5 is a front sectional view showing a state in which the nozzle is rotated by the ejection pressure of the nozzle which is the main part of the present invention, and FIG. 6 is a centering device of the present invention. Side cross-sectional views are respectively shown for showing the state of action.

In the embodiment of the present invention, as shown in the drawing, a nipple (2a) is provided in the front end is made of a flexible tube, and a high pressure hose (2) for transferring the high pressure fluid from the outside; The first to third segmented pipes 4a, 4b and 4c, which are composed of a plurality of nodes and have stepped portions at opposite ends thereof, and the stepped portions of the first to third segmented pipes 4a 4b and 4c, respectively. It is fitted and fixed, and includes a center retaining spring (6) for providing a flexible bendability at the time of passage of the bend pipe to constantly receive a variable curvature, the first to third segment pipe (4a, 4b, 4c) A main body 4 for allowing the high pressure hose 2 to pass therethrough; One end is installed at a predetermined angle on the outer surface of each segment pipe (4a, 4b, 4c) of the main body 4, the other end is rolling while contacting the inner surface of the aging pipe 100 to move the main body 4 in the front and rear direction A moving means (8) for making it; A nipple connecting tube (10) inserted into and coupled to the first segment pipe (4a) of the main body (4) to connect the nipple (2a) of the high pressure hose (2) to the outer diameter portion; It is connected to the end of the nipple connecting pipe 10, and provided with a nozzle having a deviation from the center in a radial direction while rotating by the repulsive force when the high pressure fluid hits the inner surface of the old pipe 100, High pressure fluid injection means (12) for removing the scale layer grown on the inner surface of the aging pipe (100) by the blow pressure of the ejected high pressure fluid; The camera head is installed on the outer surface of the first segment pipe 4a of the main body 4, and has a flashlight and a CCTV for photographing to secure the situation data of the scale layer grown on the inner surface of the aging pipeline 100. 14).

In the embodiment of the present invention configured as described above, the main body 4 can be bent up to 90 ° by the elastic force of the center holding spring (6) to pass through the 90 ° curved pipe without difficulty while maintaining the center accurately. Can be.

Here, the moving means (8) is a box frame (22a) installed in the radial direction 120 ° from the outer surface of each of the first to third segment pipe (4a, 4b 4c), and from the inside of the box frame 22a to the outside A shock absorber 22 having a spring 22b that protrudes and expands; A fixing bracket 24 having a “U” shape installed at an upper end of the spring 22b of the shock absorber 22; A support bracket 26 coupled to the box frame 22a of the shock absorber 22 and having a long hole 26a vertically formed thereon; A wheel 30 fitted to the fixing bracket 24 and contacting the inner surface of the conduit 100 to roll 360 °; It includes a hinge 32 for supporting the wheel 30 to the fixing bracket 24.

In the present embodiment, the wheel 30 is made of a wheel in the form of a disc, but is not limited thereto, it is well known that it can be made of a ball type that can rotate 360 °.

As shown in FIG. 3B, the nipple connector 10 is screwed with a nipple 2a on one side, and a bushing 36 is installed on the other side with a rotational force provided from the outside. The bushing 36 rotates separately from the nipple connector 10. That is, the nipple connector 10 is fixed, and the bushing 36 is rotated by an external force.

The high pressure fluid injection means 12 includes a coupling shaft 40 coupled to the bushing 36 of the nipple connector 10 as shown in FIGS. 3B and 4B; At least two fluid passages 42b connected to the coupling shaft 40 and having a space portion 42a for temporarily storing a high-pressure fluid therein, but deviated by a predetermined distance t from a center thereof. A nozzle head 42 formed to penetrate; And a jet nozzle 44 coupled to each fluid passage 42b of the nozzle head 42 and a traction ring 46 provided to be pulled by a winch or the like on the front end surface of the nozzle head 42.

The high pressure fluid injection means 12 configured as described above is blown from the injection nozzle 44 eccentrically located at the center of the nozzle head 42 by the "t" interval hitting the pipe face at an angle. The nozzle head 42 and the coupling shaft 40 and the bushing 36 rotate together without a separate power by the repulsive force due to the strike.

The four fluid passages 42b formed in the nozzle head 42 may be processed at an angle rather than into the garden so that the direction of the fluid discharged through the fluid passage 42b is spiral. According to this structure, when the fluid is ejected through the fluid passage 42b formed in the helical direction, the rotational force to rotate in the helical direction acts on the injection nozzle 44, so that the rotation can be made smoother. In the present embodiment, four fluid spray nozzles installed in the nozzle head 42 are shown in an example in which 90 ° intervals are provided. However, the present invention is not limited thereto, and the center and top and bottom (or right and left) eccentricity of the nozzle head 42 are not limited thereto. It is also possible to provide a fluid spray nozzle bent at a predetermined angle. That is, a fluid passage is formed symmetrically on both sides of the nozzle head 42, and the fluid passage is eccentrically up, down, left, or right with respect to the center line by a predetermined distance t, and is in an opposite direction by about 45 °. You can do it with a wrong structure.

On the other hand, the front end side of the first segment pipe (4a) of the main body 4 after the completion of the tubing work, the sprayer 50 is installed in place of the high-pressure fluid injection means 12. Accordingly, in the present invention, the customs work and the painting work can be combined with one customs device.

Fig. 8 is a sectional view showing the construction of a sprayer which is the main part of the present invention.

As shown in the figure, the sprayer 50 includes a casing 52 in which a screw tube 52a is integrally formed at one side thereof so as to be fastened to the first segment pipe 4a of the main body 4; A paint sprayer (54) penetrating the casing (52) in an axial direction and spraying the lining paint provided from the hose (2) to the conduit from which the scale layer has been removed; A swivel joint 56 for connecting the hose 2 freely from the paint sprayer 54; Is installed in the casing 52, it is composed of a rotational force providing device 58 for providing a rotational force to the paint sprayer (54).

The rotational force providing device (58) is a pair of spur gears (62) which are engaged in a 1: 1 gear ratio and support the paint sprayer (54) to the driven gear; A support bracket (66) installed in the reduction motor (64) and the casing (52) connected to the cylindrical side of the spur gear (62) and having a circular groove formed therein to support the spur gear (62); And a fixing bolt 68 that fixes the support bracket 66 through the casing 52.

The paint sprayer 54 in the configuration of the sprayer 50 is composed of at least one nozzle tip 72 bent in the 90 ° direction and the paint supply pipe 74 connected to the nozzle tip 72, The structure is a structure suitable for supplying the one-part paint mixed externally. At this time, the paint supply pipe 74 may perform a function as a mixer for mixing the paint. As shown in Fig. 9, the mixer includes a connecting pipe 76 having a connecting nipple 76a on both sides; It is connected to the two-component nozzle tube for supplying the main body and the curing agent on one side, the mixing hole 78a is passed through both ends of the hollow tube and the groove for mixing is formed in a straight line in the threaded portion, respectively, so that the inside of the connecting tube 76 The first mixer tube 78 is inserted into the.

On the other hand, as shown in Figure 10 as another embodiment of the sprayer 50, the two-component paint is supplied and mixed from the outside, the mixer tube 92, the motor is built in the front end; Branched into two branches in the mixer tube 92, each of which has a different length, but is connected to the two nozzles 94 and the motor shaft, the ends of which are bent at a predetermined angle, are ejected from each nozzle 94 on the outer peripheral surface The hole for passing the paint may be composed of a spray holder 96 formed in four rows.

The working state of the customs and painting combined centering device using the non-powered rotation according to the present invention configured as described above will be described in detail.

In general, the process of regenerating the old water pipe 100 is a customs process for removing the scale layer grown on the inner surface of the pipeline by introducing a tubule to the aging pipeline 100, and discharged out of the pipe; A drying step of drying the pipe by blowing air through a brower after discharging the accumulated water into the tubular pipe; Epoxy lining step of applying a paint spraying device equipped with a paint spraying device when the inner surface of the pipe is dried, spraying the epoxy resin paint on the inner surface of the pipe to a predetermined thickness; And when the epoxy resin paint is completely cured, the interior of the pipe is cleaned and passed through the assembly of the pipeline to complete the rehabilitation work and consists of water flow process.

In the old pipeline rehabilitation method that performs a series of processes as described above, when using the customs apparatus according to the present invention can be used in combination with the customs process and epoxy lining process.

First, the case of carrying out the customs process of the pipeline will be described.

When the high pressure fluid for removing the scale layer grown on the inner surface of the old pipeline 100 is sand, sand is supplied from a sanding kit installed outside the pipeline, and in the case of high pressure water, the water jet pump is supplied. In addition, the main body 4 is introduced into the conduit 100, the rope is connected to the towing ring of the nozzle head 42, and the main body 4 is pulled to the front side of the conduit via a winch or the like. The front of the pipe line 100 is irradiated by the camera head 14 provided in the one segment pipe 4a.

When the high pressure fluid is supplied through the high pressure hose 2 while pulling the main body 4 from the front part to the rear part of the pipe line 100, the high pressure fluid is nipple connected to the nipple 2a of the high pressure hose 2. It flows into the nozzle head 42 through the connection pipe 10 and is ejected to the inner surface of the pipeline 100 through the injection nozzle 44 connected to the nozzle head 42.

At this time, as shown in Figure 4b, the high-pressure fluid ejected by the structure of the injection nozzle 44 eccentrically located by a predetermined distance (t) from the center of the nozzle head 42 so as to strike the inner curved surface of the conduit at an angle. do. At this time, the repulsive force generated when hitting the pipe surface acts on the injection nozzle 44 to generate a force that tries to rotate in a direction opposite to the ejecting direction of the high pressure fluid. The force to be rotated of the injection nozzle 44 is transmitted to the nozzle head 42 and the bushing 36 to rotate the entire high pressure fluid injection means 12 with no power.

The injection nozzle 44 ejects the high pressure fluid while rotating, and removes the scale layer grown on the conduit surface, and the wheel 30 of the moving means 8 moves while rolling on the conduit surface.

Since the vibration generated when removing the scale layer of the surface of the conduit 100 through the high pressure fluid ejected from the injection nozzle 42 is absorbed buffered by the shock absorber 22 connected to the wheel 30, the wheel 30 can perform a smooth rolling motion.

On the other hand, when the main body (4) passes through the section of reduced diameter, or the expanded section, the wheel 30 is in close contact with the inner surface of the conduit while being buffered by the buffer 22 as much as the changed diameter. For example, when the diameter of the conduit is narrowed, as shown in FIG. 6, the wheel 30 is pressed by the narrower diameter, so that the hinge 32 is the long hole 26a of the support bracket 26. It descends in the inside, and the spring 22b of the shock absorber 22 is compressed. On the contrary, when passing through the reduction section of the conduit, the wheel 30 is in close contact with the conduit 100 by the restoring force of the spring 22b. As such, when the diameter of the nozzle is reduced or expanded, the center of rotation of the nozzle head 42 is deviated from the center of the pipe line, so that an eccentric error occurs. The nozzle head 42 is towed while maintaining the center of rotation and the conduit center.

Therefore, as shown in FIG. 5, the intervals t1, t2, t3, t4 between the inner surface of the conduit 100 and the injection nozzle 44 are all the same.

On the other hand, when passing through the curvature having a predetermined curvature, as shown in Figure 7, the center holding spring 6 connecting the main body 4 by the radius of curvature is bent. Accordingly, the center of rotation of the main body 4 and the center of rotation of the nozzle head 42 are not to be eccentric, but are towed to coincide with the center of the conduit.

After the customs process is completed, the high-pressure fluid injection means 12 which is fastened to the first segment pipe 4a of the main body 4 is removed, and the coating machine 50 is connected to perform painting work.

The sprayer 50 is provided with a separate reduction motor 64 can be a lining paint operation of the pipeline while rotating the paint sprayer 54 at a desired rotational speed.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

As described above, according to the present invention, it is possible to tow the inner surface of the pipe by mounting a moving device in the rolling motion, the position of the injection nozzle is shifted by a predetermined distance (t) with respect to the center of the nozzle head or The nozzle head may be rotated without the need for a separate motor rotational power by the repulsive force of the high pressure fluid hitting the conduit surface by ejecting the high pressure fluid after displacing the injection nozzle at an angle.

In addition, the present invention provides a configuration in which the main body is in the form of a segmental tube and a center retaining spring is connected to each segmented tube, so that the main body is flexibly bent by the radius of curvature of the curved tube having a predetermined radius of curvature. The center of rotation of the body and the center of the bend can always be matched. Accordingly, the injection nozzle can provide a uniform blow pressure to the pipe surface to uniformly remove the scale layer grown on the pipe surface without damaging the pipe, and the traction of the main body is unstable due to the ejection pressure of the high pressure fluid There are other effects that can prevent overturning.

In addition, the present invention is to perform the customs work while maintaining the center of rotation of the nozzle head and the center of the pipeline, the pressure hitting the surface of the pipeline is uniform and can be done simply and cleanly without damaging the pipeline, After the customs process is completed, there is another effect that the coating of uniform thickness can be performed by using the customs device during the painting work using epoxy resin paint.

Claims (10)

delete High pressure fluid supply means; A main body including a plurality of segmented pipes to which the high-pressure fluid supply means are inserted and having a hollow, connecting the segmented pipes, and a pipe connecting member to maintain the center by providing flexible bendability when passing the curved pipes; One end is installed at an outer surface of each segment pipe of the main body at a predetermined angle, and the other end is moved to move the main body back and forth by rolling while contacting the inner surface of the old pipe; The outer diameter is connected to the distal end pipe of the main body, the inner diameter is connected to the high pressure fluid supply means, and radially has injection nozzles having a deviation by a predetermined distance from the center so that the high pressure fluid strikes the inner surface of the aging pipe. High pressure fluid injection means for removing the scale layer of the conduit surface by the blow pressure of the high pressure fluid is ejected while rotating by; And After completion of the customs process, it is fastened in place of the high-pressure fluid injection means connected to the distal segment pipe of the main body, the coating means for spraying the lining paint on the tubular pipe while rotating with its own power Customs and painting combined centering device comprising a. The method of claim 2, The painting means A casing in which a screw portion is integrally formed at one side to be fastened to the distal end pipe of the main body; A paint sprayer which penetrates the casing in an axial direction and sprays the lining paint provided from the high pressure fluid supplying means into the pipeline from which the scale layer is removed; A swivel joint connecting the hose to flow freely from the paint sprayer; Rotation force providing means installed in the casing and providing rotational force to the paint sprayer Customs and painting combined centering device comprising a. The method of claim 3 The rotational force providing means A pair of spur gears that are engaged in a 1: 1 gear ratio and support the paint sprayer on the driven gear; A reduction motor connected to the prime side of the spur gear; A support bracket installed in the casing and having a circular groove formed to support the spur gear; And Fixing bolt for fixing the support bracket through the casing Customs and painting combined centering device comprising a. The method according to any one of claims 2 to 4, Installed on the outer surface of any one of the segment pipes of the main body, and provided with a flash and CCTV further comprising a camera for securing the situation data of the scale layer grown on the inner surface of the aging pipeline, customs and painting combined centering device. The method according to any one of claims 2 to 4, Centering device for both customs and painting, characterized in that the pipe connecting member of the main body is made of a center holding spring. The method according to any one of claims 2 to 4, The means of transportation A cushioning means provided with a box frame installed at a radius of 120 ° from each outer surface of each segment pipe of the main body, and a spring protruding outwardly from the inside of the box frame to expand and contract; A fixing bracket having a “U” shape installed at an upper end of the spring of the buffer means; A support bracket which is installed to face each of the box frames of the shock absorber and has a long hole vertically formed thereon; A wheel which is fitted inside the fixing bracket and moves 360 ° in contact with the inner surface of the pipe; And A hinge that supports the wheel to be suspended inside the fixing bracket, both ends of which pass through the long hole of the support bracket and flow in the long hole as the wheel is pressed. Customs and painting combined centering device comprising a. The method according to any one of claims 2 to 4, The high pressure fluid injection means A nipple connector connected to the segment pipe positioned at the distal end of the main body, the nipple connector having an internal diameter portion connected to the high pressure hose at one side thereof, and a rotatable bushing at the other inner diameter portion thereof; A coupling shaft coupled to the bushing of the nipple connector; A nozzle head connected to the coupling shaft and having a space for temporarily storing the high pressure fluid therein, the nozzle head being formed to penetrate at least two fluid passages in a radial direction at a position deviated by a predetermined distance from the center; It is coupled to each fluid passage of the nozzle head to remove the scale by hitting the high pressure fluid to the pipe surface, the injection nozzle rotating by the repulsive force when the high pressure fluid strikes the pipe surface obliquely Customs and painting combined centering device comprising a. The method of claim 8, Custom centering and painting combined centering device further comprising a traction ring provided on the front end surface of the nozzle head. The method of claim 8, Wherein the high-pressure hose is provided with a nipple at the front end of the capillary and coating centering device, characterized in that the screw is fastened to the nipple connector.

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