KR20240018866A - Photocurable adhesive type pipeline repair packer - Google Patents

Abstract

The pipeline repair packer according to the present invention includes a pair of end blocks arranged to be spaced apart at a certain distance; An expansion tube coupled to surround the space between the pair of end blocks in a sealed structure and having a light transmittance greater than a preset standard value; and a light emitting unit that radiates curing light to the repair material mounted to surround the expansion tube. The light-curing pipe repair packer according to the present invention cures the repair material with a light source such as ultraviolet rays, so the time required for pipe repair can be significantly shortened. Even if the tube is made thin, it is not damaged when expanded, so the product is not only lighter but also more durable. It has the advantage of being highly flexible and able to pass smoothly even pipes bent at 90 degrees due to its high flexibility.

Description

Photocurable adhesive type pipeline repair packer}

The present invention relates to a pipe repair packer for repairing damaged parts of a pipe buried underground without excavating it, and more specifically, to a photocurable pipe repair packer that hardens the repair material with light such as ultraviolet rays.

Sewage pipes buried underground may be partially damaged, pipe connections widened, or steps may occur due to aging of the pipe, shock and vibration transmitted from vehicles passing above the buried location, or from surrounding construction sites. Something goes wrong. However, carrying out excavation work to repair small damaged parts such as cracks not only costs a lot of time and costs, but is also very inefficient, as it generates civil complaints.

Therefore, a non-dig repair method in which problem-prone parts are repaired by inserting a pipe repair packer through a manhole is preferred.

Hereinafter, a conventional pipe repair packer will be described with reference to the attached drawings.

Figure 1 shows an example of use of a conventional pipe repair packer.

As shown in FIG. 1, a conventional pipe repair packer includes a tube 20 on the outer periphery of a water pipe 10. The water pipe 10 is a cylindrical pipe with circular flanges 11 formed at both ends. The tube 20 is made of a rubber material, is expandable, and has flanges 21 bent inward at both ends.

Therefore, the flange 21 of the tube 20 is attached to the flange 11 of the water pipe 10, and the end block 30 is fastened to the outside of the flange 11 with a bolt 40 to secure it. A hole is also formed in the center of the end block 30 to allow water to pass during operation of the pipe repair packer. A supply pipe 50 is connected to the water pipe 10, and the supply pipe 50 is connected to a hydraulic supply device 70 located on the road surface through a hose 60. In addition, the pipe repair packer is provided with wheels 80 and 81 for movement at both ends.

The pipe repair packer constructed in this way mounts the repair material 90 on the outer surface of the tube 20 and then compresses and hardens the repair material 90 at the crack occurrence location 1a. At this time, the repair material 90 is made of a fibrous material, and a mixed agent (gel state) for water retention and hardening is applied to it and impregnated into the tissue.

When the repair material 90 is seated on the tube 20, the pipe repair packer is inserted through the manhole and moved to the part requiring repair of the sewer pipe 1, that is, the crack occurrence location 1a, and the hydraulic supply device 70 ) is operated to supply air into the inside of the tube 20 through the supply pipe 50.

When air is supplied into the tube 20, the tube 20 expands and the repair material 90 comes into close contact with the inner peripheral surface of the sewer pipe 1. Then, when a predetermined time has elapsed in the above-mentioned expanded state, the repair material 90 is hardened in close contact with the inner peripheral surface of the sewer pipe 1, and when the curing of the repair material 90 is completed, the pipe repair packer is placed in the tube 20. After the fluid is discharged, it is returned to the ground.

The hardened repair material 90 can prevent contamination of soil and groundwater by blocking the damaged part of the sewer pipe 1, preventing sewage from leaking from the sewer pipe 1, and preventing the inflow of soil into the sewer pipe 1. Sewage can be discharged smoothly through (1), and it also serves to reinforce the rigidity of the sewer pipe (1).

At this time, the repair material (90) as described above is generally stably cured at a temperature of about 25 ℃ or higher. Since the temperature inside the pipe (1) buried underground is about 15 ℃ on average, the repair material (90) is used by natural curing method. ) There is a problem that hardening takes a lot of time.

Therefore, a method of injecting high temperature steam into the tube 20 is often used to cure the repair material 90 more quickly. However, it takes some time for the heat of the steam to be conducted to the repair material 90. , there is a limit to increasing the curing speed of the repair material 90. In particular, the tube 20 is made of synthetic rubber of a certain thickness or more so that it does not break even when expanded at high pressure, but such synthetic rubber has a low thermal conductivity, so the problem is that the heat of the steam is not smoothly transmitted to the repair material 90. there is.

In addition, the conventional pipe repair packer has a disadvantage in that it is difficult to pass through a pipe bent at 90 degrees because the tube 20 is made thick and has low flexibility.

KR 10-2058109 B1

The present invention was proposed to solve the above problems. The repair material can be hardened with a light source such as ultraviolet rays, and even if the tube is made thin, it is not damaged when expanded, and can smoothly pass through a pipe bent at 90 degrees. The purpose is to provide a ductile pipe repair packer.

A pipeline repair packer according to the present invention for achieving the above object includes a pair of end blocks arranged to be spaced apart by a certain distance; An expansion tube coupled to surround the space between the pair of end blocks in a sealed structure and having a light transmittance greater than a preset standard value; and a light emitting unit that radiates curing light to the repair material mounted to surround the expansion tube.

It further includes a connecting member connecting the pair of end blocks.

The connecting member is composed of a plurality of soft wires.

The flexible wire is made of fiber-reinforced plastic.

An inlet for injecting high-pressure gas into the expansion tube is formed in the end block, and the inlet is configured to be opened and closed according to the user's selection.

The expansion tube is made of transparent vinyl.

It further includes a protection panel coupled to surround the remaining portion of the outer surface of the expansion tube except for the point where the repair material is disposed.

One side of the protective panel is coupled to surround the outer surface of the end block, and the other side is composed of a plurality of cut pieces.

The plurality of cut pieces partially overlap when the expansion tube is not inflated, and the overlapped portion decreases as the expansion tube expands.

The protective panel is made of a material that has ductility and elasticity above standard values so that it can be stretched by the expansion force of the expansion tube.

The resin impregnated in the repair material is a photocurable resin, and the light-emitting unit is applied as an ultraviolet lamp mounted on opposite sides of the pair of end blocks.

The light-curing pipe repair packer according to the present invention cures the repair material with a light source such as ultraviolet rays, so the time required for pipe repair can be significantly shortened. Even if the tube is made thin, it is not damaged when expanded, so the product is not only lighter but also more durable. It has the advantage of being highly flexible and able to pass smoothly even pipes bent at 90 degrees due to its high flexibility.

Figure 1 shows an example of use of a conventional pipe repair packer.
Figure 2 is a perspective view of a photocurable pipe repair packer according to the present invention.
Figure 3 is a longitudinal cross-sectional view of the photocurable pipe repair packer according to the present invention.
Figure 4 is a front view of an end block included in the photocurable pipe repair packer according to the present invention.
Figure 5 is a cross-sectional view of the photocurable pipe repair packer according to the present invention.
Figures 6 to 8 are a perspective view, a longitudinal section, and a cross-sectional view of a photocurable pipe repair packer with an expanded expansion tube.
Figures 9 to 12 are diagrams showing the use state of the photocurable pipe repair packer according to the present invention.

Hereinafter, an embodiment of the photocurable pipe repair packer according to the present invention will be described in detail with reference to the attached drawings.

Figure 2 is a perspective view of the photocurable pipe repair packer according to the present invention, Figure 3 is a longitudinal cross-sectional view of the photocurable pipe repair packer according to the present invention, and Figure 4 is an end block included in the photocurable pipe repair packer according to the present invention. is a front view, and Figure 5 is a cross-sectional view of the photocurable pipe repair packer according to the present invention.

The pipe repair packer according to the present invention is equipment for repairing pipes buried underground in a non-excavating manner. Like a conventional pipe repair packer, the pipe is expanded and the repair material is applied to the inner side of the pipe (more specifically, to the cracked area). The most important feature is that it is configured to cure the repair material more quickly by pressing it on the inner surface of the area and curing it by irradiating light rather than heating it above the curing temperature. .

In other words, the pipe repair packer according to the present invention is combined with a pair of end blocks 100 arranged to be spaced a certain distance apart, and surrounds the space between the pair of end blocks 100 with a sealed structure and is configured in a preset manner. It is comprised of an expansion tube 300 having a light transmittance above a standard value, and a light emitting unit 500 that irradiates curing light to a repair material 600 mounted to surround the expansion tube 300.

When curing the repair material 600 using steam or hot water, the heat of steam or hot water is transmitted to the repair material 600 through conduction, so it takes a lot of time for the repair material 600 to be heated above the curing temperature. When the repair material 600 is configured to be hardened by irradiated light, like the pipe repair packer according to the invention, the repair material 600 has the advantage that it can be hardened very quickly, that is, the construction period for repairing the pipe 1 is significantly reduced. It has the advantage of being shortened.

At this time, if the expansion tube 300 is made of an opaque material, the light emitted from the light emitting unit 500 may not pass through the expansion tube 300, and as a result, the repair material 600 may not be heated. there is. Therefore, it is preferable that the expansion tube 300 is made of a transparent material such as transparent vinyl, which has high light transmittance and a tensile strength higher than the standard value.

Meanwhile, the expansion tube 300 is expanded as high-pressure gas, such as compressed air, is supplied inside. When the internal pressure of the expansion tube 300 rises above the standard value, the pair of end blocks 100 are separated from each other. There is a risk that it may be separated from the expansion tube 300 due to pressure in the direction away from it. The pipe repair packer according to the present invention includes a connecting member 200 that connects the pair of end blocks 100 so that the pair of end blocks 100 do not move apart from each other even if the internal pressure of the expansion tube 300 increases. It is desirable to have.

In this way, when the pair of end blocks 100 are configured to be connected by the connecting member 200, even if the internal pressure of the expansion tube 300 increases significantly, as long as the connecting member 200 is not broken, Since the pair of end blocks 100 do not move in a direction away from each other, there is an advantage that the end block 100 does not become separated from the expansion tube 300.

At this time, if the connecting member 200 is made of a steel material such as a steel beam, not only does the overall weight of the pipe repair packer increase, but the middle part cannot be bent, so it becomes difficult to pass the pipe 1 bent at 90 degrees. there is.

In the pipe repair packer according to the present invention, it is preferable that the connecting member 200 is made of a plurality of flexible wires as shown in this embodiment so that the connection between the pair of end blocks 100 can be easily bent. do. In general, wires have very weak bending strength but very high tensile strength, so when the connecting member 200 is applied with a plurality of flexible wires as shown in this embodiment, the overall weight of the pipeline repair packer increases significantly. It is possible to obtain the effect of significantly improving the coupling force of the pair of end blocks 100 without increasing it.

In addition, when the connecting member 200 is applied as a soft wire, the gap between the pair of end blocks 100 can be easily bent, so the pipe repair packer can easily pass through the pipe 1 bent at 90 degrees. There is also the advantage of being able to do it. In other words, the pipe repair packer according to the present invention has the advantage of being able to easily enter the inside of the pipe 1 through various routes, greatly increasing its usability.

At this time, the soft wire can be applied as a wire of any material as long as it can be easily bent and has high tensile strength. However, the inside of the underground pipeline (1) where the pipeline repair packer is used is not only high in humidity but also contains various chemical components. Since there are mixed characteristics, if the connecting member 200 is made of metal, there is a disadvantage in that there is a risk of corrosion as the period of use increases. In the pipeline repair packer according to the present invention, it is preferable that the connecting member 200 is made of fiber-reinforced plastic so as to eliminate the above-mentioned corrosion concerns.

Fiber-reinforced plastic not only has excellent chemical and moisture resistance, so there is no risk of corrosion, but also has a high tensile strength-to-weight ratio, allowing a pair of end blocks (100) to be connected very firmly and making it possible to lighten the pipe repair packer. There is an advantage to doing it. In addition, if the connecting member 200 is applied as a wire made of fiber-reinforced plastic, the phenomenon of bending or breaking of the connecting member 200 does not occur even if the pipe repair packer is repeatedly bent several times. Another advantage is that durability is greatly increased.

In addition, the light emitting unit 500 according to the present invention does not use heat from steam or hot water to harden the repair material 600, but irradiates curing light to the repair material 600 to harden the repair material 600. It has a compositional characteristic in that it is hardened. That is, the repair material 600 is configured to be impregnated with a photocurable resin, and the light emitting unit 500 is configured to irradiate light that can cure the photocurable resin.

At this time, the light emitting unit 500 may be configured to irradiate any type of light as long as it can harden the resin impregnated in the repair material 600, but it can be configured to irradiate ultraviolet rays that do not cause heat damage and have low maintenance costs, that is, , it is desirable to apply it with an ultraviolet lamp.

In this way, if the resin impregnated in the repair material 600 is configured to be cured by photocuring, not only can the time required for curing be significantly shortened compared to the conventional heat curing method, but also the cost required for resin curing can be reduced. There is an advantage.

In addition, the light emitting unit 500 is mounted on the side facing each other among the pair of end blocks 100 so as to directly irradiate the repair material 600, and irradiates ultraviolet rays evenly throughout the repair material 600. It is preferable that a plurality of blocks are arranged at equal intervals along the edge of the end block 100.

Figures 6 to 8 are a perspective view, a longitudinal section, and a cross-sectional view of a photocurable pipe repair packer in which the expansion tube 300 is expanded, and Figures 9 to 12 are diagrams of the photocurable pipe repair packer according to the present invention in use.

When high-pressure gas is injected into the expansion tube 300 in the state shown in FIGS. 2 to 5, the expansion tube 300 expands as shown in FIGS. 6 to 8. At this time, an inlet 110 for injecting high-pressure gas into the expansion tube 300 is formed in the end block 100 so that high-pressure gas can be injected into the expansion tube 300. In addition, after the expansion of the expansion tube 300 is completed, the inlet 110 must be configured to be sealed according to the user's selection so that the gas inside the expansion tube 300 is not extracted through the inlet 110. will be.

In addition, when high-pressure gas is injected into the inside of the expansion tube 300 to expand the expansion tube 300, the maintenance material 600 mounted to surround the middle of the expansion tube 300 is connected to the expansion tube 300. It is compressed against the inner wall of the pipe 1 by the expansion force of (see Figure 12). At this time, the part of the expansion tube 300 surrounded by the repair material 600 is not in direct contact with the inner wall of the pipeline 1, but the portion not surrounded by the repair material 600 is in direct contact with the inner wall of the pipeline 1, so there is a risk of damage. There is. In particular, if the expansion tube 300 is made of transparent vinyl so that it can be easily expanded and pass through easily, the risk of damage to the expansion tube 300 increases.

Therefore, the pipe repair packer according to the present invention is additionally provided with a protection panel 400 to protect the expansion tube 300 so that it does not directly contact the inner wall of the pipe 1 even if the expansion tube 300 expands. The detailed structure and function of the same protection panel 400 will be described in detail below with reference to FIGS. 9 to 12.

When attempting to repair the pipeline (1) using the photocurable pipe repair packer according to the present invention, first, as shown in FIGS. 9 and 10, the expansion tube 300 (more specifically, the expansion tube 300 ) After wrapping the repair material 600 on the area (not covered by the protection panel 400), insert the photocurable pipe repair packer into the inside of the pipe 1 to be repaired, as shown in Figure 11.

When insertion of the pipeline repair packer is completed, high-pressure gas is injected through the inlet 110 of the end block 100 to expand the expansion tube 300 as shown in FIG. 12, so that the repair material 600 is Make sure it is in close contact with the inner wall of the pipe (1). In this way, when the repair material 600 is in close contact with the inner wall of the pipe 1, the light emitting unit 500 is operated to harden the resin impregnated in the repair material 600, thereby making it possible to repair the pipe 1.

At this time, the protection panel 400 is coupled to surround the remaining portion of the outer surface of the expansion tube 300 except for the point where the repair material 600 is disposed, and the protection panel 400 is formed into a single cylindrical shape. Once formed, there is a risk that the expansion tube 300 may be blocked by the protection panel 400 and may not be expanded normally. Therefore, the protection panel 400 is coupled on one side to surround the outer surface of the end block 100 so that the inner diameter increases as the expansion tube 300 is expanded, and the other side has a plurality of cut pieces 410. It is desirable to consist of:

At this time, the plurality of cut pieces 410 are arranged in a structure in which some overlap as shown in FIG. 5 so that they are in close contact with the outer surface of the expansion tube 300 even when the expansion tube 300 is not expanded. , Preferably, as the expansion tube 300 expands, the overlapping area decreases and the inner diameter increases.

In this way, if the protection panel 400 is configured to have a plurality of cut pieces 410, the protection panel 400 is always on the outer surface of the expansion tube 300, regardless of whether the expansion tube 300 is expanded. Since it has a close contact structure, there is an advantage in that the expansion tube 300 can be protected more stably.

Of course, if the protection panel 400 is made of a material having ductility and elasticity above the standard value so that it can be easily expanded by the expansion force of the expansion tube 300, the protection panel 400 has a plurality of cut pieces 410. In other words, it may be composed of a single cylindrical structure. However, if the protection panel 400 is made of a material with high ductility and elasticity, its strength will be relatively low, so there is a risk that its function of protecting the expansion tube 300 will be somewhat reduced.

Therefore, the protection panel 400 is preferably manufactured from a metal plate or synthetic resin plate having a strength exceeding the standard value, and has a structure including a plurality of cut pieces 410 as shown in this embodiment.

Above, the present invention has been described in detail using preferred embodiments, but the scope of the present invention is not limited to the specific embodiments and should be interpreted in accordance with the appended claims. Additionally, those skilled in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

1: Pipeline 100: End block
110: Inlet 200: Connecting member
300: expansion tube 400: protection panel
410: cut piece 500: light emitting unit
600: Repair material

Claims (8)

A pair of end blocks arranged to be spaced a certain distance apart;
An expansion tube coupled to surround the space between the pair of end blocks in a sealed structure and having a light transmittance greater than a preset standard value; and
a light emitting unit that irradiates curing light to a repair material mounted to surround the expansion tube;
A pipeline repair packer comprising: In claim 1,
A pipeline repair packer further comprising a connecting member connecting the pair of end blocks. In claim 1,
An inlet for injecting high-pressure gas into the expansion tube is formed in the end block,
A pipeline repair packer, characterized in that the inlet is configured to be opened and closed according to the user's selection. In claim 1,
A pipe repair packer further comprising a protection panel coupled to surround the remaining portion of the outer surface of the expansion tube except for the point where the repair material is disposed. In claim 4,
The protection panel is a pipeline repair packer, characterized in that one side is coupled to surround the outer surface of the end block, and the other side is composed of a plurality of cut pieces. In claim 5,
A pipeline repair packer, wherein the plurality of cut pieces partially overlap when the expansion tube is not expanded, and the overlapped portion decreases as the expansion tube expands. In claim 4,
A pipe repair packer, characterized in that the protection panel is made of a material having ductility and elasticity above a standard value so that it can be stretched by the expansion force of the expansion tube. In claim 1,
The resin impregnated in the repair material is a photocurable resin,
A pipeline repair packer, characterized in that the light-emitting unit is an ultraviolet lamp mounted on a side of the pair of end blocks facing each other.

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