KR101746088B1 - A hardening heat coil for pipeline maintenance work - Google Patents

Abstract

The present invention relates to a thermosetting coil for pipeline maintenance work, and more particularly to a thermosetting coil for a pipeline maintenance work, in which a pair of heat generating means are provided in a pair so that the outer circumference of the pipe can be wrapped in both directions, To a thermosetting coil for pipeline maintenance work in which a heat curing operation can be performed directly in the city underground.
A pair of heating means facing each other on opposite sides of the pipe, and a pair of heating means for fastening the pair of heating means to each other so as to surround the outer peripheral surface of the pipe, Wherein one end of one of the pair of heat generating means is constituted by an inlet terminal through which a high frequency current flows and one end of the other heat generating means is constituted by a high frequency current And the connecting means is a conductor which allows the high-frequency current to flow from one of the heating means to the other heating means, and each of the heating means is rounded in the width direction of the pipe in a semicircular shape And both ends of the respective heating means are integrally and repeatedly bent in the longitudinal direction of the pipe with respect to the central axis of the pipe , And a pair of heat generating means is further provided with a binding member made of an insulating material for maintaining binding between the pair of heat generating means, and the binding member is disposed between the heat generating means, And a heat-curing coil for pipeline maintenance work.

Description

Technical Field The present invention relates to a hardening coil for pipeline maintenance work,

The present invention relates to a thermosetting coil for pipeline maintenance work, and more particularly, to a thermosetting coil for a pipe line maintenance work, To a thermosetting coil for maintenance work.

In general, pipes for supplying fluid to consumers such as water pipes, oil pipelines, and gas pipes are installed underground or exposed to the ground for a short distance of several hundred meters to several tens of kilometers.

These pipes are very important to prevent pipe damage through maintenance.

Particularly, in the case of pipes with gas flowing, it is important to prevent, repair and replace in advance, because it can cause major accidents due to gas leakage when pipes are damaged.

The reason for the breakage of the pipe is that corrosion occurs on the outside of the pipe due to moisture and microorganisms remaining in the ground, and corrosion inside the pipe is caused by the fluid moving into the pipe.

In addition, mechanical damage may be caused when a construction work is performed in a place adjacent to a pipe where the pipe is buried or a pipe is buried in a section adjacent to the railway, so that a physical force is constantly applied to the pipe.

Accordingly, frequent maintenance is required in order to prevent the fluid from leaking out due to internal or external corrosion or mechanical damage of the pipe.

Meanwhile, the repair work for preventing the mechanical damage of the pipe as described above is performed by attaching a patch made of a composite material such as epoxy and carbon fiber to a crack of the pipe, and then hardening the patch.

That is, before the mechanical damage of the pipe occurs, prognosis symptoms such as cracks are seen. In the maintenance work, a patch is attached to the crack to prevent the mechanical damage of the pipe.

At this time, the patch must be cured after the patch is attached to the crack. As the means for curing, a heating coil made of a cylindrical body is used.

This is to heat the heating coils around the peripheral surface of the pipe so as to harden the patches adhering to the peripheral surface of the pipe at one time.

At this time, in order for the cylindrical heating coil to surround the peripheral surface of the pipe, it is necessary to remove the pipe of a specific section to be repaired from the entire pipeline and to lift it out to the ground.

This is because, in the entire pipeline, it is virtually impossible to place the cylindrical heating coil in a pipe located in a specific section.

Therefore, the specific pipe requiring maintenance is separated from the entire pipeline and then lifted to the ground. After the repair work using the patch is performed, a cylindrical heating coil is inserted through the end of the pipe to generate heat through the heating coil The patch is hardened and the maintenance work of the pipe is completed.

However, the conventional pipe repair work has the following problems.

First, a series of work processes for separating the pipes buried underground and bringing them down to the ground has been problematic in terms of work efficiency.

It has been difficult to remove the specific pipe to be repaired from the entire pipeline and lifting the specific pipe to the ground by using a crane or the like because it takes a long time to work and work,

In addition, heavy equipment such as a crane is mobilized, which causes a problem of increased working costs.

Second, since the maintenance work is carried out after the pipe is lifted to the ground, the operation of the pipeline that is normally operating is inevitably stopped. As a result, a large amount of cost is lost due to the shutdown of the pipeline, Various problems have occurred.

Republic of Korea Publication No. 10-2013-0136288

SUMMARY OF THE INVENTION The present invention has been conceived in order to solve the problems described above, and it is an object of the present invention to provide a heat exchanger which is separated from a heat- The present invention provides a thermosetting coil for pipeline maintenance work that can heat-cure directly from underground without lifting the pipe necessary for the pipe.

In order to achieve the above object, according to the present invention, there is provided a heat exchanger comprising: a pair of heat generating means facing each other on opposite sides of a pipe; a pair of heat generating means, which are separated from each other so as to surround the outer peripheral surface of the pipe, Wherein the heat generating means generates heat through a high frequency heat treatment method and one end of the heat generating means among the pair of heat generating means comprises an inflow terminal into which a high frequency current flows, Wherein one end of the one heat generating means is an outlet terminal through which a high frequency current flows out and the connecting means is a conductor through which a high frequency current flows from one heat generating means to the other heat generating means, And in the longitudinal direction of the pipe, with respect to the central axis of the pipe, Wherein both ends of the heat generating means are integrally and repetitively bent, and between the pair of heat generating means, there is further provided an insulating material binding member for holding the binding between the pair of heat generating means, wherein the binding member is disposed between the heat generating means, And the heat-curing coil for pipeline maintenance work is provided.

In this case, each of the heat generating means preferably has a semicircular shape corresponding to the curvature of the pipe.

At this time, it is preferable that the pipe has a curvature corresponding to the curvature of the pipe and is rolled up in the longitudinal direction of the pipe.

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The thermosetting coil for pipeline maintenance work according to the present invention has the following effects.

First, since the heat generating means is configured to be detachable from both sides of the pipe, local repair work for a specific section of the pipe can be easily performed.

In other words, since the heat generating means is formed in a pair of semicircular shapes, it is not necessary to fit the thermosetting coil in the longitudinal direction of the pipe, so that even if it is a specific section of the pipeline, .

Therefore, there is an effect that it is easy to repair the pipe by installing the thermosetting coil directly in the underground without having to separate the pipe buried in the underground and enter the ground.

Secondly, since the heat generating means is constituted by the high frequency heat treatment method, the heat can be rapidly generated, shortening the time of the heat hardening operation and promptly performing the maintenance work.

Third, there is no need for a heavy equipment such as a crane for lifting the pipe to the ground, and there is no need to separate the pipe from the pipeline, thereby reducing the maintenance work time.

Therefore, the productivity of the pipe maintenance work can be increased.

Fourth, since there is no need to separate the pipe from the pipeline, there is an effect that the maintenance work can be performed while the pipeline is normally operating.

Therefore, no cost loss is incurred due to the pipeline stoppage, and no complaints are caused.

Fifth, there is an effect that not only the heat hardening operation for pipeline maintenance work but also the local thawing operation of the pipeline can be directly performed in the underground when the working fluid flowing through the pipeline is frozen.

1 is a side view showing a state in which a repair work of a pipeline according to the related art is performed;
2 is an exploded perspective view showing a thermosetting coil for pipeline maintenance work according to a preferred embodiment of the present invention.
FIG. 3 is a perspective view showing a thermosetting coil for pipeline maintenance work according to a preferred embodiment of the present invention.
4 is a front view showing a state in which a thermosetting nose for pipeline maintenance work is combined according to a preferred embodiment of the present invention
5A and 5B are side views showing a state in which a heat hardening operation for a patch attached to a pipe is performed directly under the ground using a thawing coil for pipes according to a preferred embodiment of the present invention.

It is to be understood that the words or words used in the present specification and claims are not to be construed in a conventional or dictionary sense and that the inventor can properly define the concept of a term in order to describe its invention in the best possible way And should be construed in light of the meanings and concepts consistent with the technical idea of the present invention.

Second, a thermosetting coil for pipe maintenance work according to a preferred embodiment of the present invention will be described with reference to FIGS. 2 to 5B attached hereto.

The thermosetting coils for pipeline maintenance work are separated by a pair of technical features that can be detached from each other in both directions of the pipe.

Thus, in order to thermally cure the patches after the patching operation, it is possible to conduct the heat-setting operation directly under the ground without separating the pipes from the pipeline and exposing them to the ground.

As shown in FIG. 2, the heat-hardening coil for pipeline maintenance work includes a heat generating means 100, a fastening means 200, and a binding member 300.

The heat generating means 100 generates heat to thermally cure the patches during the pipe maintenance work, and is composed of a pair.

At this time, it is preferable that each of the heat generating means 100 is formed in a semicircular shape corresponding to the curvature of the pipe.

That is, the heat generating means 100 is arranged on the outside of the pipe in both directions of the pipes, and when the pair of heat generating means 100 are coupled to each other, the heat generating means 100 is formed in a circular shape corresponding to the outer diameter of the pipe.

At this time, it is preferable that the heat generating means 100 is configured to wind up the pipe in the longitudinal direction of the pipe, that is, to wind the pipe.

More preferably, as shown in FIG. 2, each of the heat generating units 100 is formed to be repeatedly bent in a round manner alternately in the width direction of the pipe.

It is preferable that the heating unit 100 is provided as a coil that generates heat by a high-frequency heat treatment method using induction current rather than a heating coil that is directly heated using electricity.

The high-frequency heat treatment coil is a heat treatment method using induction heating. Since the heating time is short, there is less heat effect, and the material is less deformed, and there is a technical feature that local heat treatment of only necessary part is easy.

Since the heat generating means is constituted by the high frequency heat treatment coil, one end of the heat generating means 100 of the pair of heat generating means 100 constitutes the inlet terminal 110 into which the high frequency current flows, One end of the heat generating means constitutes an outflow terminal 120 through which a high-frequency current flows.

Next, the fastening means 200 is connected to the other end of each heat generating means 100 in order to allow the heat generating means 100 to generate heat while a high-frequency current flows from the inlet terminal 110 to the outlet terminal 120 It also serves to tighten.

That is, the heat generating means 100 are provided as a pair and are separated from each other. The fastening means 200 integrates the pair of heat generating means 100, and the high-frequency current is supplied to the pair of heat generating means 100, And the like.

At this time, the fastening means 200 is formed of a conductor so that a high-frequency current can smoothly flow, and it is preferable that the fastening means 200 is bolted as shown in FIG. 2, but the present invention is not limited thereto.

Embodiments of the fastening means may be variously provided, and are herein referred to as being bolted to facilitate understanding of the description.

The fastening means 200 includes a flange 210 formed at the other end of each heat generating means 100 and a bolt 220 for tightly coupling the flange 210 and a gasket 230 interposed between the flange 210 ).

At this time, a plurality of bolt holes (h) are formed in the flange (210) and the gasket (230) so that the bolt (220) can pass through.

Next, the binding member 300 binds the pair of heating members 100 coupled to the outside of the pipe so as not to flare, and is preferably made of an insulating material for smooth flow of the high-frequency current.

The binding members 300 are connected to both sides of the heat generating means 100 by connecting the rounded bent portions of the heat generating means 100 facing each other on the outer peripheral surface of the pipe.

2, the binding member 300 includes a finishing material 310 corresponding to the length of the heat generating means 100 and a plurality of hooks 310 formed in a longitudinal direction of the finishing material 310 at one side of the finishing material 310. [ (320).

The hook 320 is formed toward both the upper and lower sides with respect to the middle portion of the finishing material 310.

The hook 320 is disposed between the bent portions of the heating means 100 facing the upper and lower sides of the pipe and has a pair of heating means 100 by hanging the bent portions of the upper and lower heating means 100 It binds.

At this time, the hook 320 is preferably made of a flexible material so that the bent portion of the heat generating means 100 can be easily engaged.

Hereinafter, a pipe maintenance operation using the thermosetting coil for the pipeline maintenance work having the above-described configuration will be described.

Separate measurement equipment is used to identify pipelines that require maintenance.

Then, after the ground was dug, the operator was put in to check the damaged part such as the crack occurred on the outer surface of the pipe.

The operator finds a crack occurring on the outer circumferential face of the pipe and uniformly attaches the patch (f) made of composite material such as epoxy and carbon fiber to the crack region.

Next, as shown in FIG. 5A, the operator places one of the pair of heat generating means 100 constituting the heat curing coil for pipeline maintenance work on the bottom surface of the pipe where cracks are generated And the other heat generating means 100 is placed over the upper portion of the pipe.

At this time, the flange 210 formed at the other end of each heat generating means 100 is closely contacted, and a gasket 230 is interposed between the flanges 210 closely attached to each other.

Thereafter, the flanges 210 tightly coupled to each other are fastened together using the bolts 220, so that the pair of heat generating means 100 are coupled to each other and a high-frequency current flows through the inlet terminal 110 to the outlet terminal 120 It becomes a state that can be.

5B, the operator uses the binding member 300 to bind the pair of heating means 100 disposed on the upper side and the lower side of the pipe.

The operator places the finishing material 310 between the bent portions of the heating means 100 facing each other and engages the bent portion of the heating means 100 by using the hook 320 formed toward the upper side and the lower side.

Accordingly, as shown in FIG. 4, the separated pair of heat generating means 100 can be stably engaged.

Then, when a thermosetting coil for pipeline maintenance work is installed on the outer circumferential surface of the pipe as described above, the operator applies power to heat the thermosetting coil for pipeline maintenance work.

At this time, the heat-hardening coil for pipeline maintenance work generates heat through a high-frequency current, and a process of generating heat by a high-frequency current is a well-known technology, so a detailed description will be omitted.

Thereafter, the patch (f) attached to the outer surface of the pipe is heated by the heat of the thermosetting coil for pipeline maintenance work through the high-frequency current, so that the pipeline maintenance work is completed.

The pair of heat generating means 100 is separated from the heat generating means 100 by releasing the bolts 220 of the fastening means 200, .

Accordingly, since the pair of heat generating means 100 can be separated toward both sides of the pipe, the disassembling work of the thermosetting coil for the pipeline maintenance work can be easily and quickly performed.

Then, by restoring the dug soil, all the pipeline maintenance work is completed.

As described above, the thermosetting coil for pipeline maintenance work according to the present invention has a technical feature that the heat generating means 100 is composed of a pair of semicircular shapes corresponding to the pipe curvature.

Accordingly, since the heat generating means 100 can be coupled to both sides of the pipe, not the longitudinal direction of the pipe, it is possible to perform the pipe maintenance work directly underground without the pipeline separation operation, Can be maximized.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art.

100: heating means 110: inlet terminal
120: outlet terminal 200: fastening means
201: flange 220: bolt
230: gasket 300: coupling member
310: Finishing material 320: Hook
f: patch h: bolt hole

Claims (6)

A pair of heating means opposed to each other on both sides of the pipe but separated from each other;
And a coupling means for coupling the pair of heat generating means to each other so that the pair of heat generating means surrounds the outer peripheral surface of the pipe,
The heat generating means generates heat through a high-frequency heat treatment method,
Wherein one of the pair of heat generating means is composed of an inlet terminal through which a high frequency current flows and one outlet terminal from the other heat generating means is an outlet terminal through which a high frequency current flows out, Is a conductor which conducts from one of the heat generating means to the other of the heat generating means,
Wherein each of the heat generating means is roundly formed in a semicircular shape in the width direction of the pipe and both ends of each heat generating means are integrally and repeatedly bent in the longitudinal direction of the pipe with respect to the central axis of the pipe,
Wherein a coupling member of insulating material is provided between the pair of heat generating means so as to maintain mutual coupling,
Wherein the heat-generating coil is disposed between the heat-generating means, and each of the bent portions of the heat-generating means of the two sides is engaged to maintain the bond. The method according to claim 1,
Wherein each of the heat generating means is formed in a semicircular shape corresponding to a curvature of the pipe. 3. The method of claim 2,
Wherein the pair of heat-
Wherein the pipe has a curvature corresponding to the curvature of the pipe and is rolled up in the longitudinal direction of the pipe.



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