KR100639268B1 - Top and bottom water pipe part repair device and method of construction - Google Patents

Abstract

The present invention relates to a water and sewage buried pipe partial repair device for partially repairing water and sewage pipes buried in the ground without excavating the ground, and more particularly, a repair device when the water supply device is introduced into a buried pipe refracted into a U-shape. Partial repair device for water and sewage buried pipe, which enables the refraction along the buried pipe to be limited and the design of the length of the repair device is not limited, and the repair sheet closely adhered to the inner wall of the buried pipe can be quickly cured and cooled with compressed air and steam. And the public law.

In the unmanned repair device for repairing the cracks and damage parts of the water and sewage pipes buried in the ground to achieve the object of the present invention, the housing provided with a plurality of drive wheels in the front is formed to be symmetric with each other at a constant interval A moving member having a fixed bracket inside; A refracting member connecting the front / rear housings in a longitudinal direction and enabling refraction between the housing and the housing; A reinforcement tube fixed to the rear of the housing to allow the inside to be sealed and expandable by the high pressure air introduced into the housing; And a repair sheet that is rounded at the outer periphery of the reinforcement tube and sewn on both ends and attached to the inner wall of the sewer pipe and cured, and the repair device includes a cleaning step, a preparation step, an entry step, and an initial curing step. It is characterized by being able to complete the construction method through the curing, finishing and finishing steps.

Repair device, housing, refractive member, reinforcement tube, repair sheet

Description

Top and bottom water pipe part repair device and method of construction             

1 is a block diagram showing the overall structure of the present invention

2 is a cross-sectional view showing the interior of the present invention.

3 is a side cross-sectional view of FIG. 2

4 is a cross-sectional view showing an operating state of the present invention

5 is a cross-sectional view showing a state in which high-pressure air is injected into the partial repair device of the present invention.

6 is a cross-sectional view showing a state in which steam is injected into the partial repair device of the present invention.

7 is a schematic view showing another operating state of the present invention

8 is an enlarged cross-sectional view of a main portion showing another embodiment of the present invention;

9 is a cross-sectional view of the operating state of FIG.

10 is a process diagram showing the overall process of the present invention.

* Explanation of symbols for main parts of drawings *

 1: Repair device 10,100: Moving member

11,12 housing 13 inclined surface

14 wheel 15 high pressure air inlet

16: steam inlet 17: tow hook

18: pressure adjustment relief 19: fixed bracket

20,200: refracting member 21: joint wire chain

22: connection pipe 30,300: reinforcement tube

40,400: Maintenance sheet 41: Waterproof plate

The present invention relates to a water and sewage buried pipe partial repair device for partially repairing water and sewage pipes buried in the ground without excavating the ground, and more particularly, a repair device when the water supply device is introduced into a buried pipe refracted into a U-shape. Partial repair device for water and sewage buried pipe, which enables the refraction along the buried pipe to be limited and the design of the length of the repair device is not limited, and the repair sheet closely adhered to the inner wall of the buried pipe can be quickly cured and cooled with compressed air and steam. And the public law.

Various water supply and sewage pipes buried in the ground gradually deteriorate with time, and corrosion occurs in the water supply pipes, and enormous amount of water leaks, drinking water is contaminated by the inflow of green water, and cracks occur in the sewage pipes. Sewage flows out of the pipeline and contaminates the living environment such as soil and groundwater.

As described above, in repairing an old buried pipeline in which cracks are damaged, a non-excavated pipeline repair method is used to repair the entire buried pipe. As a method of forming a new complex pipe in the sewer pipe by inserting a reinforcement tube into the old buried pipeline, there is no need for road repair work, which is advantageous in terms of workability, reliability, and economics.

In general, the unexcavated pipeline repairing method is a method of inserting and fixing a reinforcing tube formed of a waterproof coating layer or a film layer and an adhesive resin impregnated felt layer into an old buried pipe. An adhesive resin impregnated felt layer is placed inside and a waterproof coating layer is placed on the surface. In one state, the reinforcing tube is inverted into the buried pipe so that the adhesive resin impregnated felt layer, which was the inner surface, is inverted to the surface and adhered to the inner wall of the buried pipe, and the reinforcing tube is coated on the inner wall of the buried pipe.

However, there is no problem in repairing the entire buried pipe as described above, but in the case of partially repairing the buried pipe, there is a problem that the non-excavated pipe repair method cannot be applied.

In order to secure such a problem, in recent years, an unmanned repair device that can be partially repaired is used, and a patented 2001-72697 buried pipe repair method is mainly used.

The repairing device used in the repairing method is to be inserted into the buried pipe inlet having the first U-shape for partial repairing, so it must be deflected and moved at the end of the pipe. There was a problem of making the length of the smaller.

In addition, the sludge 3a formed on the inner wall of the tube 10 is not completely removed because the second sheet 210b and the first sheet 210a are mounted on the outer circumference of the body of the unmanned repair machine 5 so as to completely remove the sludge. (3a) and the first sheet 210a are in contact with each other, causing the first sheet 210a to be damaged.

On the other hand, since the second sheet 210b and the first sheet 210a mounted in the form of being wrapped in the body of the unmanned repair machine 5 have a structure in which both ends are not connected (see FIG. 1F), compressed air When injected, the second sheet 210b and the first sheet 210a expand and adhere to the inner wall of the tube 10. At this time, both ends of the second sheet 210b and the first sheet 210a which expand momentarily expand. While not being firmly adhered to the inner wall of the tube 10, a single layer was formed, or there was a problem that the finishing of both ends was not made neatly.

In addition, since the first sheet 210a is impregnated with glass fiber fabric and polyethylenic resin, the strength is high, so that peeling occurs even with a slight impact, and because the resin is a solvent type, the smell is severe. .

In addition, in the case of the construction method using the above-described repairing device, since the hardening time of the second sheet 210b and the first sheet 210a takes a long time and the work of the repairing device 5 must be repeated several times due to the limitation of the length of the repairing device 5. Excessive labor costs and material costs, there is a problem that takes a lot of repair budget.

The present invention has been made in view of the above-described conventional problems, and its object is to restrict the length of the repairing device by allowing the repairing device to be freely deflected to the repairing position along the inlet of the U-shaped water and sewer buried pipe. It is to provide partial repair and construction method for water and sewage buried pipe that can be manufactured without

Another object of the present invention is to form a refracting member in the interior of the repair device to enable free refraction, and the water and sewage system having a plurality of connection pipes to be prevented from sagging of the reinforcing tube is fixed to both housings to seal the inside It is to provide buried pipe partial repair device and construction method.

It is still another object of the present invention to provide a water and sewage buried pipe partial repair device and a method for forming a reinforcement tube and a repair sheet smaller than the outer diameter of the housing to solve the defects caused by contact between the sludge formed on the inner wall of the buried pipe and the repair sheet. .

Another object of the present invention is to sew both ends of the repair sheet to form a circular shape so as to be in close contact with the inner wall of the buried pipe and at the same time using the compressed air and steam so that the repair sheet can be cured in a short time working time In order to reduce the construction cost by shortening the repair and extending the repair length, the water supply and sewage buried pipe partial repair device and construction method are provided.

In the unmanned repair device for repairing the cracks and damaged parts of the water and sewage pipes buried in the ground to achieve the object of the present invention, the housing with a plurality of driving wheels installed in front to be symmetrical with each other at a constant interval Is formed, the moving member having a fixed bracket on the inside; A refracting member connecting the front / rear housings in a longitudinal direction and enabling refraction between the housing and the housing; A reinforcement tube fixed to the rear of the housing to allow the inside to be sealed and expandable by the high pressure air introduced into the housing; And a watertight sewer pipe partial repair device and a crack in the water and sewage pipe buried in the ground, characterized in that it consists of a repair sheet that is rounded on the outer periphery of the reinforcement tube and is sewn on the inner wall of the sewer pipe. And a method for repairing a damaged part, the cleaning step of identifying a crack and a damaged part in a buried pipe and removing foreign matters attached to the surrounding part; Installing a repair sheet impregnated with an adhesive resin in the reinforcing tube of the repair device, the repair sheet is prepared so that both ends are sewn to maintain a state in close contact with the inner wall of the buried pipe; An entry step in which a refraction member, a reinforcing tube, and a repair sheet are refracted and enters the buried pipe while the repair device is moved to the buried pipe inlet toward the buried pipe inlet and the length of the joint wire chain is changed; An initial curing step of injecting high pressure air into the high pressure air inlet formed in the housing of the repair device located at the crack and the damaged part to maintain the state in which the repair sheet is in close contact with the inner wall of the buried pipe while the reinforcing tube expands; The steam is injected into the steam inlet of the housing so that the repair sheet adhered to the inner wall of the buried pipe can be cured in a short time, and the pressure and temperature of the steam are adjusted to a set value in a pressure regulating relief formed on the opposite housing. Curing step to cure at the steam pressure and temperature set to the optimum conditions; And a finishing step of cooling the cured repair sheet and then recovering the repair apparatus after CCD photographing the repair status.

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

1 is a block diagram showing the overall structure of the present invention, Figure 2 is a block diagram showing the interior of the present invention, the present invention is a movable member 10 that can move the interior of the water and sewer buried pipe (2) and A refraction member 20 formed inside the moving member 10 to enable refraction; a reinforcement tube 30 formed on the refraction member 20 to seal the inside of the moving member 10; In addition, the reinforcing tube (30) is installed on the outer periphery is largely composed of a repair sheet 40 which is hardened in close contact with the inner wall of the buried pipe (2).

The repair device 1 for repairing the cracks and damages of the water and sewage pipes buried in the ground is formed with a moving member 10 so as to be movable inside the buried pipe 2, where the moving member 10 is formed on the front / rear side. The housings 11 and 12 are formed to be symmetrical with each other in the same shape at the rear side.

The housing 11 is formed to have an inclined surface 13 in which the upper outer periphery is inclined backward by a predetermined angle, and the reinforcement tube 30 to be described later is fused to the inner side by bending the end portion downward to the rear of the inclined surface 13. The inside of the housings 11 and 12 on both sides is sealed. (See Fig. 1).

A plurality of wheels 14 are installed along the outer circumference of the inclined surface 13 of the housings 11 and 12 to allow the wheels 14 to move forward / rearward along the inner wall of the buried pipe 2.

The high pressure air inlet 15 is formed on the front side of the housing 11 to transfer the high pressure air supplied from the outside into the housings 11 and 12, and a steam inlet 16 is formed at one side thereof to form steam. Transfer it inside. And the other end of the housing 12 is formed with a traction ring 17 and the pressure adjusting relief 18, respectively, the traction ring 17 is one end of the wire when the maintenance device 1 is moved to the outside traction ring 17 ), The other end is connected to the traction device 5 formed on the outside to operate the traction device 5 to end the repair device 1 (see FIG. 7), and the pressure regulating relief 18 is The steam flowing into the steam inlet 16 maintains the set value set by the user while discharging the pressure and temperature to the outside so as to maintain a constant pressure and temperature inside the housings 11 and 12, so as to provide a fast time in the best condition. To be able to cure the repair sheet 40 (see Fig. 6).

A fixed bracket 19 is installed inside the housing 11 and 12 so that both ends of the joint wire chain 21 to be described later are connected to the fixed bracket 19 (see FIG. 2).

One end of the joint wire chain 21 is fixed to the fixing bracket 19 formed in the housings 11 and 12 on both sides of the refracting member 20, and the other end is formed on the upper / right side of the connecting pipe 22. The joint wire chain 21 is fixed to the lower portion, where the length of the joint wire chain 21 is fixed when it is fixed with the connecting pipe 22, so that the connecting pipe 22 can be naturally deflected when moving along the buried pipe 2, so that the long and short buried Repair work can be carried out without limiting the length of the pipe (2) (see Figure 2).

The joint wire chain 21 and the connecting pipe 22 are repeatedly provided in succession at regular intervals in the longitudinal direction.

Preferably, the connecting pipe 22 is made of aluminum, and since the refracting member 20 is freely refracted upon entry along the buried pipe 2 having a U-shape, the repair device 1 is buried in the related art. (2) because it does not bend when entering into the buried pipe (2) by securing the problem that must be made to the size that can enter, it is to be able to perform the work quickly and simply in one construction.

The reinforcement tube 30 is fixed to the rear of the housing 11, 12 on both sides, wherein the reinforcement tube 30 can be fixed and used in various ways.

The reinforcement tube 30 is integrally fused to seal the housings 11 and 12, and is formed at the rear of the housings 11 and 12 to be smaller than the outer diameter of the housings 11 and 12 to form the housings 11 and 12. Do not directly contact with the buried pipe (2) when entering the buried pipe (2).

The reinforcement tube 30 is expanded by the high pressure air introduced into the high pressure air inlet 15 of the housing 11 to maintain a state in close contact with the buried pipe (2), the outer periphery of the reinforcement tube (30) The repair sheet 40 formed in the expansion function to be attached to the buried pipe (2) (see Figure 5).

The repair sheet 40 is formed on the outer periphery of the reinforcing tube 30 to be sewn on both ends while forming a circular shape, the repair sheet 40 can be easily installed in the reinforcing tube 30 because it is elastically expandable. have.

The repair sheet 40 is installed on the outer periphery of the reinforcement tube 30 smaller than the outer diameter of the housing 11, 12, the bottom surface of the repair sheet 40 in which the adhesive resin is vacuum-impregnated to have a double waterproof structure The waterproof plate 41 is integrally formed to improve the adhesive strength and at the same time, the shrinkage expansion index is small. Therefore, the glass fiber and the polyether resin have a large number of shrinkages. It is a security problem.

8 and 9 is a view showing another embodiment of the present invention, when looking at the operation state with reference to the drawings, by forming a moving member 100 hollow inside the construction so that water can be supplied during repair work in progress There is a feature that can resolve the complaints of residents who have to wait a long time until the end.

The moving member 100 has a hollow pipe 100a installed in the central longitudinal direction of the housing 110 to seal the inside of the housing 110 and supply water to the water supply and drainage into the pipe 110a. In this case, allow the water to move smoothly.

Here, a plurality of driving wheels 140 are formed on the upper portion, and an upper portion of the rear portion thereof forms a step in a stepped manner so that an extension portion 110b is bent toward the lower portion thereof so that an end portion of the extension portion 100b is formed of a pipe ( Maintaining close contact with the end of the 100a, at this time the end of the pipe (100a) is formed to seal the inside of the housing 110 while maintaining a close contact with the outside of the extension (100b).

An injection hole 150 is formed at the front of the housing 110 to supply high pressure air and steam injected from the outside, and the other end of the injection hole 150, that is, the discharge hole at the upper wall surface of the extension part 100b. 100c is formed to allow the high pressure air and steam introduced into the injection hole 150 to move to the outside through the discharge hole 100c. The high pressure air and steam moving through the discharge hole 100c will be described later. High pressure air is injected into a space formed between the first reinforcing tube 310 and the second reinforcing tube 320 to allow the second reinforcing tube 320 to expand.

The refractive member 200 connects the front and rear housings 110 and 120 in the longitudinal direction, and the joint wire chain 210 and the connection pipe 220 are continuously connected to allow the housing and the housing to be bent. It is formed as, and the same as the configuration described above will be omitted.

The reinforcing tube 300 is fixed to the first reinforcing tube 310 on both sides of the extension portion (110b) of the housing 110 by the fixture 330 to seal the inside, the upper portion of the first reinforcing tube (310) While maintaining the state in which the second reinforcing tube 320 having the same structure is spaced at a predetermined interval, the high reinforcement air and steam introduced through the discharge port 100c remain sealed to expand the second reinforcing tube 320. (See Figure 9).

The repair sheet 400 is installed on the outer periphery of the second reinforcing tube 320 while being sewn on both ends, impregnated with an adhesive resin to have a double waterproof structure, and the waterproof plate 410 is integrally formed on the bottom thereof. The structure formed is the same as the configuration and operation described above.

The partial repair device 1 as described above allows water to flow to the water supply and sewage during partial repair work so that the water can be supplied to the inhabitants while the work is in progress. There is a feature that can be eliminated.

Thus, the present invention will be described with reference to the water and sewage buried pipe partial repair device operation state and the water and sewage buried pipe partial repair method.

Cleaning step (S100),

Check the cracks and damages inside the buried pipe (2) with a CCTV camera, remove foreign substances attached to the surroundings with a washing machine, and then irradiate the inside of the buried pipe (2) again with CCTV Service the interior.

Preparation step (S200),

When the cleaning operation is completed, the repair sheet 40 impregnated with the adhesive resin is inserted into the outer periphery of the reinforcement tube 30 of the repair device (), where the both ends of the repair sheet 40 are sewn first to repair the sheet ( 40 to form a circular shape so that the repair sheet 40 is uniformly in close contact with the inner wall of the buried pipe (2) can be cured (see Fig. 2).

In addition, the repair sheet 40 has a double waterproof structure to form a waterproof plate 41 integrally on the bottom surface of the repair sheet 40 to improve adhesive strength and at the same time have a low shrinkage expansion index. Resin has a large number of shrinkage has secured a problem that needs to be repaired again due to internal separation and gap after construction.

Entry step (S300),

When the preparation step is completed, the repair device (1) enters the buried pipe (2) inlet toward the inlet, the length of the joint wire chain (21) is variable as the repair device (1) moves along the buried pipe (2) refracted in the U-shape At this time, the joint wire chain 21 is variable while the refractive member 20, the reinforcing tube 30, the repair sheet 40 is refracted to enter the buried pipe (2) to move to the repair position.

Initial curing step (S400),

The repair device () located at the crack and the damaged part is provided with a high pressure air supplied from a compressor (not shown) to the high pressure air inlet 15 formed in the housing 11, and the air passes through the connecting pipe 22 to the upper and lower parts. While inflating the reinforcing tube 30 and the repair sheet 40 while inflating the repair sheet 40 to the inner wall surface of the buried pipe (2) is fixed by fixing (see Fig. 5).

The repair sheet 40 is formed smaller than the outer diameter of the housing 11, 12 is installed on the outer periphery of the reinforcement tube 30, the repair sheet 40 impregnated with an adhesive resin in a vacuum to have a double waterproof structure The waterproof plate 41 is integrally formed on the bottom to improve the adhesive strength, and the shrinkage expansion index is small, so that the number of shrinkages that glass fibers and polyether resins have in the past is large. It is a security problem that needs to be repaired.

Since the repair sheet 40 is formed in a circular shape, the repair sheet 40 is firmly adhered to the inner wall of the buried pipe 2, so that the repair sheet 40 is not wrinkled or laminated.

Curing Finishing Step (S500),

When expansion of the reinforcing tube 30 and the repair sheet 40 using high pressure air is completed, the steam is injected into the steam inlet 16 of the housing 11 by using a steam apparatus (not shown). The repair sheet 40 in close contact with the inner wall can be cured in a short time, and the pressure and temperature of the steam in the pressure regulating relief 18 formed on the opposite housing 11 are adjusted to the set value. It is possible to cure the repair sheet 40 in a short time with the steam pressure and temperature set in the conditions of.

When the temperature of steam is 45 ~ 60 °, and the pressure is injected at 1 ~ 2K, the pressure regulating relief (18) always sets the pressure inside the maintenance device (1) to 1.5 when the user sets the setting value, for example, 1.5K. Keep it at K and let the rest out.

Finishing step (S600),

After cooling the cured repair sheet 40 naturally and then repairing the CCD using the photographing equipment 6 to repair the repair device 1, a series of methods are completed.

As described above, the partial repairing device and the construction method do not bend the existing repairing device, and the size of the repairing device 1 that is introduced into the buried pipe 2 is limited, thereby making it difficult to perform the partial repair work for a limited length. Due to the large amount of time required for the work, the increase in labor costs, poor adhesion to the inner wall of the buried pipe (2), the problem of double repairs, and the long time of hardening of the repair sheet. This excessively occurring defect has a feature that can be solved in the present invention.

The present invention as described above is a partial repair device used for water and sewage buried pipe to improve productivity by simulaneous engineering (simultaneous engineering), and the water and sewage buried pipe partial repair device and method to make the overall structure convenient, as follows. It has the same advantages.

First, the refraction member is formed inside the partial repair device so that the repair device can be freely deflected when entering the buried pipe made of the U-shape or the stepped pipe formed stepwise. Due to the inconvenience and the limitation of the length of the repairing device to limit the length of the invention is to improve the hassle of having to perform several times according to the length of the buried pipe.

Secondly, the adhesive resin was vacuum-impregnated inside the repair sheet to form a double waterproof structure, and at the same time, both ends of the repair sheet were stitched to be firmly adhered to the inner wall of the buried pipe so that it could be cured quickly.

Thirdly, the reinforcing tube and the repair sheet were expanded in high pressure air and cured in a short time by supplying steam to shorten the construction work and reduce the construction budget.

Fourth, to maintain a constant temperature and pressure in the maintenance device to form a pressure regulating relief on one side of the housing to maintain the set value set by the user at all times.

 Fifth, the repairing device and the method can partially repair the length of the existing limited accessory device up to 0.4 ~ 20m at a time, and can shorten the working time and save materials by allowing hardening and cooling work in a short time. And, the invention is effective to improve the productivity of the construction work by reducing the labor costs.

If the fifth effect is described as an example, the maximum length of the conventional partial repair device is 5 m and the repair length is 8 m, the hassle of having to perform the repair work twice, and the continuous repair work for the first time There was a problem that the construction should be performed once more if there is a crack or leaking part because both ends of the starting construction part and the second construction part are kept in close contact with each other.

Sixthly, as shown in another embodiment of the present invention, the center portion of the partial repair device forms a hollow pipe so that water flows freely in the buried pipe, thereby stopping supply of water until construction is completed. It is an invention that has the effect of securing the problem to be solved.

Claims (9)

In the unmanned repair device for repairing the cracks and damage parts of water and sewage pipes buried underground A moving member 10 having a plurality of driving wheels 14 installed at the front thereof so as to be symmetric with each other in a state of maintaining a predetermined interval, and having a fixed bracket 19 therein; A refracting member (20) connecting the front and rear housings (11) in a lengthwise direction and allowing refraction between the housing (11) and the housing (11); A reinforcement tube 30 fixed to the rear of the housing 11 on both sides to seal the inside thereof and expandable by high pressure air introduced into the housing 11; And Water and sewage buried pipe partial repair device, characterized in that it consists of a repair sheet 40 is rounded on the outer periphery of the reinforcement tube 30 is sewn, attached to the inner wall of the sewer pipe and cured. The housing 11 of the movable member 10 is formed to have an inclined surface 13 whose upper outer circumference is inclined at a predetermined angle to the rear, and the rear end is bent downward so as to have a reinforcing tube 30 inside. ) To be fused, and the housing 11 having a plurality of wheels 14 installed along the inclined surface 13 is formed to be symmetrical with each other, and the high pressure air inlet 15 and the steam inlet are formed at the center of the front side of the housing 11 on one side. (16) is formed, the water supply and sewage buried pipe partial repair device, characterized in that the other end of the housing (12) is provided with a traction ring (17) and a pressure regulating relief (18). According to claim 1, The refracting member 20, one end of the joint wire chain 21 is fixed to the fixed bracket 19 formed in both housings (11, 12) inside, the other end of the hollow connection The connection wire 22 is deflected while the length of the joint wire chain 21 fixed to the pipe 22 is formed to be variable, and the joint wire chain 21 and the connection pipe 22 extend in the longitudinal direction. Water and sewage buried pipe partial repair device, characterized in that installed repeatedly at regular intervals. According to claim 1, wherein the pressure adjustment relief 18 is to adjust the set value of the pressure adjustment relief 18 so as to maintain a constant pressure and temperature of the steam flowing into the repair device (1) Water and sewage buried pipe partial repair device characterized in that. According to claim 1, wherein the maintenance sheet 40 is installed smaller than the outer diameter of the housing 11 so that the unmanned maintenance machine does not come in contact with the buried pipe (2), the adhesive resin is impregnated to have a double waterproof structure Water and sewage buried pipe partial repair device, characterized in that the waterproof sheet 41 is integrally formed on the bottom of the repair sheet (40). In the unmanned maintenance device for repairing the cracks and damage of water and sewage pipes buried underground Inside the hollow pipe (110a) is installed in the central longitudinal direction of the housing 110 to seal the interior of the housing 110, a plurality of driving wheels 140 are formed on the housing 110, Its upper rear side is stepped in a stepped step, the end is bent to form an extension portion (110b) in close contact with the pipe (110a), the discharge member (110c) formed on the upper wall surface of the extension portion (110b) ; A refracting member (200) connecting the front and rear housings (110) (120) in the longitudinal direction and enabling refraction between the housing and the housing; The first reinforcing tube 310 is fixed to both sides of the extension part 110bc of the housing 110 to seal the inside thereof, and the second reinforcing tube 320 having the same structure on the upper part of the first reinforcing tube 310. A reinforcement tube (300) which seals the inside so that high pressure air and steam may be introduced through the discharge hole (110c) at a predetermined interval; And Both ends of the second reinforcing tube 320 in a circular shape is sewn and installed, impregnated with an adhesive resin so as to have a double waterproof structure, a water-retaining plate 410 integrally formed on the bottom of the repair sheet 400 Water and sewage buried pipe partial repair device, characterized in that consisting of. According to claim 6, The housing 110 of the movable member 100 is formed so that the housing 110, 120 having an inclined surface 130 inclined at an angle to the rear of the upper peripheral edge symmetric with each other, An injection hole 150 is formed in the center of the front of the housing 110 to inject high pressure air and steam, and the housing 120 at the other end is provided with a traction ring 170 and a pressure regulating relief 180 installed therein. Tube part repair device. The method of claim 6, wherein the refractive member 200 is fixed to one end of the joint wire chain 210 to one end of the extension portion (110a) of the housing 110, the other end is fixed to the connection pipe 220 hollow inside The length of the joint wire chain 210 formed on the upper and lower sides is variable so that the connecting pipe 220 can be deflected, and the joint wire chain 210 and the connecting pipe 220 are repeatedly installed at regular intervals in the longitudinal direction. Water and sewage buried pipe partial repair device characterized in that it is. In the method for repairing the cracks and damage sites of water and sewage pipes buried underground Check for cracks and damage in the buried pipe and the cleaning step of removing the foreign matter attached to the surrounding step (S100); Install a repair sheet 40 impregnated with an adhesive resin in the reinforcement tube 30 of the repair device 1, wherein the repair sheet 40 is sewn at both ends to maintain a state of being in close contact with the inner wall of the buried pipe 2. Preparing to install so that (S200); The repair device 1 enters the buried pipe 2 entrance to the entrance of the buried pipe 2, while the repair device 1 moves, and the length of the joint wire chain 21 is changed so that the refracting member 20 and the reinforcement tube are moved. 30, the entry step (S300) that the repair sheet 40 is refracted to enter the buried pipe (2); When high pressure air is injected into the high pressure air inlet 15 formed in the housing 11 of the repair device () located at the crack and the damaged part, the reinforcing tube 30 expands and the repair sheet 40 is buried inside the buried pipe 2. Initial curing step to maintain the state in close contact (S400); Injecting steam into the steam inlet 16 of the housing 11 so that the repair sheet 40 in close contact with the inner wall of the buried pipe 2 can be cured in a short time, the pressure regulating relief formed on the opposite housing 11 A curing finishing step (S500) to adjust the pressure and temperature of the steam in accordance with the set value set in 18 to cure to the steam pressure and temperature set in the optimum conditions; And After cooling the cured repair sheet (40) and the CCD photographing the repair status after the finishing step of returning the repair device (S600); water and sewage buried pipe repair method comprising a.

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