KR20040107984A - Reparing method of ducts for water supply - Google Patents

Abstract

PURPOSE: A method for repairing a duct is provided to lengthen the life span of a duct by surely repairing a damaged part and to reduce the costs by reducing the period for construction. CONSTITUTION: A support reinforcing sleeve(30) having at least one diameter reduction preventing unit is inserted to the outer portion of a forcible fitting expansion support member(10). A repairing agent(15) for hardening is coated on the outer surface of the support reinforcing sleeve. The forcible fitting expansion support member is pushed into the inside of a duct(1) to be repaired to expand the forcible fitting expansion support member at a position corresponding to a crack(C) of the duct. According to the expansion of the expansion support member, the support reinforcing sleeve and the repairing agent are adhered to the inner wall surface of the duct. Then, the forcible fitting expansion support member is shrunken and released from the duct. The repairing agent and the support reinforcing sleeve are hardened.

Description

Repairing method of ducts for water supply

The present invention relates to a repairing method of a water pipe, and more particularly, to a method for easily repairing cracks or breakage of water and sewage.

Most water pipes and sewer pipes are buried in the ground, and various types such as cement molded bodies, clay molded bodies, iron pipe bodies, stainless steel pipe bodies, and copper pipe bodies have been constructed and buried underground.

These conventional water pipes or sewer pipes are cracked or partially damaged due to various factors such as impacts from the ground, thermal expansion due to seasonal changes, corrosion, misaligned connections due to stratum fluctuations, and the like. It has a problem that causes breakage of the connection part.

Therefore, the water supply or sewer pipes in the underground burial have to be repaired periodically, and these costs are a significant government expense.

A large part of the repair costs can be accounted for by the labor cost of the workers, not only because they are quite cumbersome, but also because labor costs rise due to time-consuming repairs of cracks and breaks in water pipes that require individual repairs.

Conventionally, the following method has been used as a method for repairing problems such as cracking or breakage of water pipes such as water supply or sewage, and releasing of joints of water pipes.

As shown in FIG. 1, the water pipe 1 in which the breakage portion C is caused due to external force or temperature difference is buried in the ground, and the air in the state where the water pipe 1 is excavated to open the buried inlet. A fluid supply means such as a pump is connected as the supply pipe 2 to use a pressurized expansion support 10 having a long tube shape formed of a rubber material so as to freely expand and contract.

The press-expanded support 10 has its diameter slightly smaller than the inner diameter of the water pipe in the normal state. 3 is a roller for guiding the maintenance agent 15 applied by maintaining a constant distance between the outer surface of the pressure-expansion support 10 and the inner wall surface of the water pipe 1 to safely enter the damage (C) as Illustrations in other drawings are omitted.

In the normal state in which the pressure-expansion support 10 is contracted, when the time passes on the outer surface 10 ′, the water-retaining pipe 1 is broken by applying a repair agent 15 of various pharmaceutical compositions that solidify and form a thick film. Insert the pressure-expansion support 10 into the portion C. (Fig. 1A).

When air is blown into the supply pipe 2 at a position (Fig. 1B) in which the coating portion of the water-retaining agent 15 of the pressure-expansion support 10 is roughly coincident with the damaged portion C of the water pipe 1,

The press-expanded support 10 expands, so that the maintenance agent 15 comes into close contact with the inner wall surface of the breakage portion C (Fig. 1C).

In this expanded state of the pressure-expansion support 10, if the appropriate time (approximately 1.5 hours or more) is left to cure the repair agent 15, the repair agent 15 hardens against the inner wall surface of the broken part C. As a result, a protective film 15 'is formed so that the damaged portion C is maintained in a normal tube (Fig. 1D).

The repairing method of water pipes widely used in the related art as described above has the following problems.

Since it takes a considerable time to harden the repair agent 15, the operator has to wait for that time, thereby greatly reducing the number of repairs that the worker can handle, resulting in excessive labor costs.

In the conventional method, the release agent is applied between the repair agent 15 and the press-expansion support 10, or a release paper is used, but due to a construction mistake, the repair agent 15 and the press-expansion support 10 are In order to recover the pressure-expansion support 10 by sticking together in the curing process, the entire water pipe 1 should be excavated or

As the protective film 15 'to be formed by the repair agent 15 is broken, many problems such as the need to remove the protective film 15' remaining on the inner wall surface of the damaged part C and reconstruct it. There was this.

The repair method of the water pipe of the present invention is devised to solve the above problems,

By drastically shortening the construction time, labor cost can be saved, and the construction of damaged parts is also performed steadily, which increases the service life of water pipes and shortens the repair work later. It can have various advantages such as can.

1, A, B, C, and D are working process diagrams for explaining a method of repairing a conventional water pipe.

2 A, B, C, D is a working process diagram illustrating the repair method of the water pipe of the present invention.

Figure 3 is a perspective view of the first embodiment showing the support reinforcing sleeve used in the repair method of the water pipe of the present invention and enlarged perspective view of the main portion of the male locking portion.

4A, 4B and 4C are partial side views illustrating the operation of the supporting reinforcing sleeve of FIG.

5A, B, C, and D are perspective views showing the use of the support reinforcing sleeve used in the repairing method of the water pipe of the present invention.

* Explanation of symbols used in the main part of the drawing *

1: water pipe

10: pressure expansion support

15: Remuneration

30: reinforcement sleeve

Repair method of the water pipe of the present invention for achieving the above object;

In the method of repairing water pipes, such as water and sewage that caused cracks, breakage on the wall surface,

It is a tube body made of rubber or the like, and is located on the outer side of the pressure-expanding support that can be expanded and contracted by air supply.

An elastic plate member, such as a coiled metal part of a winding coil, is inserted into a reinforcing reinforcement sleeve having at least one means for prohibiting the reduction of the diameter when the coil is expanded in a coil state.

By applying a repair agent for repair hardening on the outer surface of the support reinforcing sleeve,

The pressing expansion support is pushed into the inner side of the frequency to be repaired,

By expanding the pressure-expanding support at the corresponding position of breakage of the water pipe, the support reinforcing sleeve and the repair agent applied to the surface thereof are enlarged in diameter to closely adhere to the inner wall surface of the water pipe,

By contracting the pressure-expansion support in the state of close contact with the inner wall surface to remove it from the water pipe to cure the maintenance agent with the support reinforcing sleeve,

It is characterized in that to repair the damaged portion of the water pipe.

In addition, the means for preventing the shaft diameter of the support reinforcing sleeve; It is also one of the main features of the present invention to be the judging section, which is the circumferential cut end of the supporting reinforcing sleeve, which is an elastic plate such as a stainless steel plate, and an axial bore stopper formed on the end side of the other judgment.

In addition to this, the shaft prohibiting stopper portion is a stopper hole, which is a series of circumferential perforation chains which are placed at equal intervals in the circumferential direction at the judgment of one side and constitute the perforation portion,

One of the stopper holes and the hook-shaped locking stopper that is placed and bent so as to be fitted when the support reinforcing sleeve is expanded becomes the main feature of the support reinforcing sleeve.

Hereinafter, a preferred embodiment of the present invention for achieving the above object with reference to the accompanying drawings as follows.

2A, B, C, and D are working process diagrams illustrating the repairing method of the water pipe of the present invention, and FIG. 3 is a perspective view and hermaphrodite of a first embodiment showing a supporting reinforcing sleeve used in the repairing method of the water pipe of the present invention. 4A, B, and C are partial side views illustrating the operation of the support reinforcing sleeve of FIG. 3, and FIGS. 5A, B, C, and D are support reinforcement used in the repairing method of the water pipe of the present invention. It is a perspective view which shows the use method of a sleeve.

2 will be described in more detail with reference to the repair method of the water pipe of the present invention.

In the present invention, in the implementation of the repair method of the water pipe, the main feature of the construction by using a support reinforcing sleeve more than the conventional method.

The support reinforcing sleeve 30 employed in the method of the present invention is shown in perspective in FIG. 3.

The support reinforcing sleeve 30 may be formed of various metal plates such as stainless steel plates or copper plates, or elastomeric resin plates, if necessary, to the extent that the thickness of the support reinforcing sleeve 30 can be maintained without being excessively thick. For example, a metal plate made of inexpensive stainless steel coated with synthetic rubber on its surface may be used.

The support reinforcing sleeve 30 of such a material is merely a coil of a coil of a simple rectangular plate,

The judgment part 30 'of one side cut | disconnected before being initially supplied to a city factory is wound up and formed in the extent which covers the other judgment part 30 ". Therefore, the supporting reinforcement sleeve 30 is formed at the end thereof. It has a coil body shape that is partially wound up.

Therefore, the support reinforcing sleeve 30 is configured to have a coil pipe shape in which the end portion is partially overlapped, and can be supplied to the site bundled with various fastening means to maintain such a state.

In addition, the support reinforcing sleeve 30 in order to comply with the present invention,

The shaft-stopping stopper part 35 is comprised in the edge part side of the judgment part 30 'which is both ends, and the other judgment part 30 ". The shaft-stopper stopper part 35 is shown as a partial enlarged view in FIG. together,

On one side of the judging section 30 'is a series of stopper holes (36-1,36-2,36-3 ..) that are placed at equal intervals in the circumferential direction and constitute a perforation part, and are perforated at one or more places,

A locking stopper 37 fitted with one of the stopper holes 36-1, 36-2, 36-3... At the position of the other determination unit 30 ″ corresponding to the determination unit 30 ′. Is also processed into a rough hook shape that is punched out and bent to protrude toward the end side.

Accordingly, as such a configuration, the stopper holes 36-1, 36-2, 36-3 .. and the stopping stopper 37 of the shaft prohibiting stopper part 35 are engaged with each other, and the centrifugal force of the supporting reinforcing sleeve 30 is more than a certain degree. It will prevent the reduced diameter in the direction and detailed operation will be described later.

The axis-prohibited stopper part 35 may be installed at one or more spaced apart portions of the support reinforcing sleeve 30 and may be configured as a configuration for performing various same operations, which will be described later.

The repairing method of the water pipe of the present invention using the support reinforcing sleeve 30 having the axis-prohibited stopper portion 35 having the above-described configuration will be described in more detail with reference to FIGS. 2, 4, and 5.

The operator inserts the above-mentioned support reinforcing sleeve 30 into the pressure-expansion support 10, which is a tube body made of a conventional rubber material or the like, in order to repair the water pipe 1 in which the breakage portion C is formed.

At this time, of course, the supporting reinforcing sleeve 30 is supplied while having the coil shape wound smaller than the inner diameter of the water pipe 1 in the above-described configuration.

In this state, a repair agent 15, which is a conventional hardening repair material, is applied to a position corresponding to the breakage portion C of the water pipe 1 on the outer surface of the support reinforcing sleeve 30. (Fig. 2A, Fig. 2). 5A)

In this state, the pressure-expansion support 10 is inserted into the water pipe 1 having the damaged portion C to be repaired (FIGS. 2B and 5B) so that the repair chemical 15 breaks the water pipe 1 When the air is fed through the supply pipe 2 while positioned to be positioned inward and downward in (C), the press-expansion support 10 expands and the outer diameter thereof is increased. (FIGS. 2C and 5C). )

In this expansion, the expansion pressure due to air pressure is considerable, so that the supporting reinforcing sleeve 30 fitted thereon is gradually extended (Fig. 4A).

In the process of gradually expanding the diameter, the locking stopper 37 of the shaft prohibiting stopper part 35 is gradually directed outward while passing through the innermost stopper holes 36-1, 36-2, 36-3. If the pressure-expanding support 10 continues to expand in the state where it is unfolded and locked with any one stopper hole (36-1, 36-2, 36-3.), (4B),

Break away from the previous stopper balls (36-1,36-2,36-3 ...) and move to the next stopper balls (36-1,36-2,36-3 ...) 4B),

This operation is continued until the expansion of the pressure-expanding support 10 is pressed against the inner diameter surface of the tap water pipe (1). (Fig. 4C)

Therefore, the water-repellent agent 15 applied to the outer surface of the support reinforcing sleeve 30 is also pressed against the inner wall surface while pressing the water pipe 1 to be applied.

In this state, since the supporting reinforcing sleeve 30 is maximally expanded to become caught in the shaft prohibiting stopper part 35, even when the pressing expansion support 10 is removed, the supporting reinforcing sleeve 30 is not restored again. It will maintain the expanded diameter.

In this state, the air of the pressure-expansion support 10 is removed and the pressure-expansion support 10 is pulled out of the water pipe 1 (FIGS. 2D and 5D).

Even if the pressure expanding support 10 is contracted and removed, the support reinforcing sleeve 30 which maintains the maximum diameter by the locking action of the shaft restraining stopper portion 35 of the support reinforcing sleeve 30 is a water repellent agent 15. Since it keeps pushing continuously to the inner wall surface of (1), it can immediately transfer to the next work to the water pipe 1 to be repaired.

That is, the press-expansion support 10 can be removed regardless of the hardening of the water-retaining agent 15, so that no waiting time for hardening is necessary.

In addition, since the support reinforcing sleeve 30 of the plate serves as a reinforcing material, the repair of the inner wall surface with the hardening of the water-retaining agent 15 is performed, and thus has a great effect on the extension of the life of the water pipe 1.

The repairing method of the water pipe of the present invention, by using the support reinforcing sleeve 30 and the shaft diameter stopper portion 35 can be significantly shortened the waiting time compared to the conventional repair method, thereby maximizing the repair efficiency, The drastic reduction of labor costs and shortening of construction period can minimize the disruption of traffic.

In addition, by reducing the need for refurbishment, the extension of lifespan and the resulting cost reduction are enormous across the country, which has the effect of drastically reducing the government budget.

Claims (4)

In the method of repairing the water pipe (1) such as water supply and sewerage that causes cracks, breakage on the wall surface, An outer diameter of the press-expansion support 10, which is a tube body made of rubber or the like, which can be expanded and contracted by air supply, and is an elastic plate material such as a wound coil-shaped metal material that is reduced in diameter when expanded in a coil state. Insert the support reinforcing sleeve (30) having at least one means for prohibiting Applying a repair agent 15 for repair hardening on the outer surface of the support reinforcing sleeve 30, The press-expansion support 10 is pushed inward of the water pipe 1 to be repaired, By expanding the pressing expansion support 10 at the corresponding position of the broken portion (C) of the water pipe (1) to enlarge the diameter of the support reinforcing sleeve 30 and the maintenance agent 15 applied to the surface thereof In close contact with the inner wall surface of the water pipe (1), By contracting the press-expansion support 10 in the state of close contact with the inner wall surface to remove from the water pipe (1) to cure the repair agent 15 together with the support reinforcing sleeve 30, Repairing of the water pipe, characterized in that for repairing the damaged portion (C) of the water pipe (1). The method of claim 1, Means for preventing the shaft diameter of the support reinforcing sleeve (30); It is characterized in that it is an axial diameter stopper part 35 formed on the end side of the judgment part 30 'and the other judgment part 30 "of the circumferential cut-out end of the support reinforcement sleeve 30 which is an elastic plate material, such as a stainless steel plate material. How to repair water pipes. The method of claim 2, The shaft forbidden stopper part 35 is a stopper hole (36-1, 36-2, 36-3) which is a series of circumferential perforations formed in the periphery at equal intervals in the determination part (30 ') of one side to form a perforation part. .), And hook-shaped locking stopper 37, which is placed and bent so as to fit when one of the stopper holes 36-1, 36-2, 36-3 .. and support reinforcing sleeve 30 is expanded. The repair method of the water pipe characterized in that. The method according to any one of claims 1 to 3, The support reinforcing sleeve 30 is wound around a simple rectangular plate in the shape of a coil, and when the repairing method of the first water pipe is constructed, one side determination unit 30 ′ of the support reinforcing sleeve 30 cut is different. A coil repairing method for repairing a water pipe, characterized in that the coil pipe is wound around a part of the coil by winding the part to be partially covered.