KR102631728B1 - Repair equipment for gas piping - Google Patents

Abstract

The present invention relates to repair equipment for gas piping capable of promptly and simply repairing a pipe when the pipe of the dissimilar gas pipe assembly is damaged. The repair equipment may comprise: a repair member (10) installed to repair a damaged area of the pipe (P); a pressure member (20) pressurizing to tightly attach to the pipe (P); and a fixing member (30) for fixing the pressure member (20) to the pipe (P) in a manner of vertically surrounding the pressure member (20) and the pipe (P).

Description

Repair equipment for piping of heterogeneous gas piping assembly {Repair equipment for gas piping}

The present invention relates to a repair device for piping of a heterogeneous gas piping assembly, and more specifically, to a repair device for gas piping that can quickly and easily repair the piping of a heterogeneous gas piping assembly when damage occurs to the piping. .

In general, synthetic resin pipes such as steel pipes or polyethylene pipes are mainly used for gas pipes used to supply city gas or LPG gas to the point of use.

In addition, these gas pipes made of different materials (heterogeneous pipes) may be connected and used, and in this case, these heterogeneous gas pipes are connected to each other through transition fittings (referred to as 'heterogeneous gas pipe assemblies').

The heterogeneous gas piping assembly used for the above purpose must not only withstand appropriate pressure but also maintain a significant degree of airtightness. Accordingly, when both pipes are joined by the heterogeneous gas piping assembly, it provides a strong bonding force and at the same time provides excellent sealing ( It must have a structure that can guarantee the sealing function.

Meanwhile, pinholes may be generated when gas pipes are used for a long time, and the gas fluid transported through the gas pipes may leak due to the occurrence of these pinholes.

In this case, conventionally, repair work was performed by manufacturing a box and installing it by welding or the like. However, when repair work is performed in this way, there is a risk of safety accidents occurring, and when the area where the pinhole occurs overlaps various facilities, part of the gas pipe is corroded, making welding difficult, as well as increasing the workload and shortening repair time. There was a problem that took a lot of time.

KR 10-1344183 B1 KR 10-1705985 B1

Therefore, the present invention was devised to solve the above problem, and provides a piping repair device for a heterogeneous gas piping assembly that can quickly and easily repair the piping if damage occurs in the piping of the heterogeneous gas piping assembly. The purpose.

Other objects and advantages of the present invention will be explained below and will be learned by practice of the present invention. Additionally, the objects and advantages of the present invention can be realized by the means and combinations indicated in the claims.

In order to achieve the above object, the pipe repair device for the heterogeneous gas pipe assembly according to the present invention includes a repair member (10) installed to repair the damaged portion of the pipe (P); A pressing member (20) that presses and adheres the maintenance member (10) to the pipe (P); And a fixing member (30) that secures the pressing member (20) to the pipe (P) by wrapping the pressing member (20) and the pipe (P) up and down, and the repair member (10) has a flat surface. An outer protective layer 11 that has a rectangular shape and has a certain thickness and has an antifouling function; an adhesive layer (12) made of adhesive and disposed so that one side faces the outer protective layer (11); and a filling layer 13 interposed between the outer protective layer 11 and the adhesive layer 12 and composed of a filling that hardens when exposed to the outside by pressure, and the maintenance member 10 The filling layer 13 is formed to protrude concavely in a downward direction, and the adhesive layer 12 of the repair member 10 is formed to protrude concavely in a downward direction along the filling layer 13. The central portion of the layer 12 includes a cut portion 12a that allows the filling layer 13 to flow out when the filling layer 13 is compressed to fill the damaged area of the pipe P. do.

In addition, the pressing member 20 is formed in a semicircular shape curved at a certain curvature so as to surround the repair member 10, and is formed with a plurality of cut grooves 21 cut at a certain depth in the longitudinal direction. It is characterized in that a plurality of ribs 22 are formed to protrude upward on both sides of the groove 21.

In addition, the fixing member 30 includes an upper member 31 disposed to surround the upper side of the pipe (P); and a lower member 33 disposed to surround the lower side of the pipe (P), wherein the upper member 31 includes a first round portion 311 configured to surround the upper side of the pipe (P); and a first wing portion 312 extending from the first round portion 311 and provided with a fastening hole H through which a fastening bolt passes, and the lower member 33 is a part of the pipe P. a second round portion 331 configured to surround the lower side; and a second wing portion 332 extending from the second round portion 331 and provided with fastening means 333 to which fastening bolts are fastened, and the fastening means 333 of the second wing portion 332. ) is fixedly coupled to the second wing portion 332 to protrude downward and is characterized in that a screw groove (333a) is formed on the inner peripheral surface.

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In addition, the adhesive layer 12 of the repair member 10 is a heat-sealable adhesive layer bonded by heat fusion, and when the repair member 10 is bonded to the surface of the pipe P during heat fusion, the temperature It is characterized by heat fusion under the conditions of 170 to 190 ℃, surface pressure of 2 to 3 MPa, and time of 2 to 4 seconds.

In addition, it is characterized in that it further includes a reinforcement sheet adhesive portion 40 adhered to a portion of the edge of the repair member 10.

In addition, the reinforcing sheet adhesive portion 40 is a reinforcing sheet made of carbon fiber, and the reinforcing sheet made of carbon fiber is a thermosetting material that is cured at a high temperature of 150 ° C. or higher in 70 to 80% of the fiber core in which carbon fiber is evenly distributed in a grid shape. It is characterized by being impregnated with 20 to 30% of the resin impregnating agent to a thickness of 10 mm or less.

As described above, according to the present invention, when damage occurs to the pipe of a heterogeneous gas pipe assembly, the pipe can be quickly and easily repaired.

1 is an overall configuration diagram of a piping maintenance device for a heterogeneous gas piping assembly according to the present invention;
Figure 2 is a diagram showing the configuration of a repair member according to the present invention,
Figure 3 is a diagram showing the configuration of a pressing member according to the present invention;
Figure 4 is a diagram showing the configuration of the lower member among the fixing members according to the present invention;
Figure 5 is a diagram showing the configuration of the reinforcement sheet adhesive portion according to the present invention.

Specific details of other embodiments are included in the detailed description and drawings.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms. In the description below, when a part is connected to another part, this is not only the case when it is directly connected. This also includes cases where they are connected through other media in between. In addition, in the drawings, parts unrelated to the present invention are omitted to clarify the description of the present invention, and similar parts are given the same reference numerals throughout the specification.

Hereinafter, the present invention will be described with reference to the attached drawings.

First, the piping repair device for the heterogeneous gas piping assembly according to the present invention is applicable to the heterogeneous gas piping assembly used by connecting gas pipes made of different materials (heterogeneous pipes).

For example, as disclosed in Patent Document 2 (KR 10-1705985), the heterogeneous gas pipe assembly connects the steel pipe 100 made of metal to the outside of the steel pipe 100, and a steel pipe 200 with teeth formed on the inside, by welding. Then, one end of the synthetic resin pipe 300 is inserted into the joining steel pipe 200 connected to the steel pipe 100, and then an insert is inserted into the other end of the synthetic resin pipe 300, the outer diameter of which is approximately the same as the inner diameter of the synthetic resin pipe 300. After inserting the pipe 400, the insert pipe 400 is forcibly pressed into the joint steel pipe 200 using a hydraulic device, etc., so that the synthetic resin pipe 300 is connected to the joint steel pipe 200. It is designed to be closely fixed between the insert pipes 400.

In this heterogeneous gas pipe assembly, the synthetic resin pipe 300 is vulnerable to deformation and is very likely to be damaged, and the metal steel pipe 100 is also likely to be damaged by the pressure of the transported gas. Therefore, the present invention is a heterogeneous gas pipe assembly. If the synthetic resin pipe 300 or the metal steel pipe 100 of the gas pipe assembly is damaged, it may be used to repair the damaged area.

Figure 1 is an overall configuration diagram of a piping maintenance device for a heterogeneous gas pipe assembly according to the present invention, Figure 2 is a diagram showing the configuration of a maintenance member according to the present invention, and Figure 3 is a diagram showing the configuration of a pressurizing member according to the present invention. Figure 4 is a diagram showing the configuration of the lower member among the fixing members according to the present invention, and Figure 5 is a diagram showing the configuration of the reinforcement sheet adhesive portion according to the present invention.

Referring to Figures 1 to 4, the piping repair device for the heterogeneous gas piping assembly according to the present invention largely includes a repair member 10 installed to repair the damaged portion of the pipe (P), and the repair member 10. A press member 20 that presses and adheres to the pipe P, and fixes the press member 20 to the pipe P by wrapping the press member 20 and the pipe P up and down. It may be configured to include a member 30.

The repair member 10 may have a rectangular shape and be formed to a certain thickness.

Specifically, the repair member 10 includes an outer protective layer 11 having an antifouling function to prevent contaminants, an adhesive layer 12 made of adhesive and disposed so that one side faces the outer protective layer 11, and , It may be configured to include a filling layer 13 that is interposed between the outer protective layer 11 and the adhesive layer 12 and is composed of a filling that hardens when exposed to the outside by pressure.

For example, the filling layer 13 may be composed of a filling that maintains a gel state and hardens when exposed to the outside. Fillers may include, but are not limited to, quick-cure epoxy or urethane.

Preferably, the filling layer 13 may be formed to protrude concavely in a downward direction. At this time, the adhesive layer 12 may be formed to protrude concavely in a downward direction along the filling layer 13.

In particular, the central portion of the adhesive layer 12 includes a cut portion 12a that allows the filling layer 13 to flow out when the filling layer 13 is compressed to fill the damaged portion of the pipe P. can do.

That is, after attaching the repair member 10 to the damaged portion of the pipe P, pressing the upper surface of the repair member 10 applies pressure to the filling layer 13, and thus the filling layer 13 The filling is exposed to the outside through the cut portion 12a of the adhesive layer 12, and then the filling in the filling layer 13 moves into the damaged area of the pipe P and hardens.

In this way, the filling of the filling layer 13 is discharged through the cut portion 12a of the adhesive layer 12 and hardens, thereby repairing the damaged area by completely filling the damaged area of the pipe P, Therefore, ensure sufficient strength and durability of the pipe (P) after repair.

Preferably, the adhesive layer 12 of the repair member 10 may be a heat-sealable adhesive layer bonded by heat fusion. In this case, when the repair member 10 is adhered to the surface of the pipe P during heat fusion, the heat fusion device is used under the conditions of a temperature of 170 to 190 ℃, a surface pressure of 2 to 3 MPa, and a time of 2 to 4 seconds. It can be heat fused. In this way, when the adhesive layer 12 of the repair member 10 is bonded by heat fusion, the adhesiveness of the repair member 10 to the pipe P is improved.

The repair member 10 may include a peeling member 14 disposed on one side of the adhesive layer 12.

The peeling member 14 protects the adhesive layer 12 in an attached state during storage or movement of the repair member 10, and is removed when the repair member 10 is attached to an adherend.

This peeling member 14 may be made of a material such as vinyl or vinyl-coated paper, but is not limited thereto.

The pressing member 20 may have a semicircular shape curved at a certain curvature so as to surround the repair member 10.

A plurality of cut grooves 21 cut at a certain depth in the longitudinal direction are formed on the upper surface of the pressing member 20, and a plurality of ribs 22 may be formed to protrude upward on both sides of the cut groove 21. .

Therefore, the pressing member 20 can be easily bent to surround the outer surface of the pipe P regardless of the various diameters of the pipe P, and spreads in a radial shape when pressed and adhered to the outer circumferential surface of the pipe P. Accordingly, each rib 22 can apply force in a direction toward the center of the pipe P to apply uniform pressure to the maintenance member 10.

The pressing member 20 may be made of a metal material with excellent corrosion resistance, such as stainless steel or titanium, but is not limited thereto.

The fixing member 30 may be configured to include an upper member 31 disposed to surround the upper side of the pipe (P) and a lower member 33 disposed to surround the lower side of the pipe (P). there is.

The upper member 31 includes a first round portion 311 configured to surround the upper side of the pipe (P); And it may be composed of a first wing portion 312 extending from the first round portion 311 and provided with a fastening hole (H) through which a fastening bolt passes.

The lower member 33 includes a second round portion 331 configured to surround the lower side of the pipe (P); And it may be composed of a second wing portion 332 extending from the second round portion 331 and provided with fastening means 333 to which fastening bolts are fastened.

Here, the fastening means 333 of the second wing 332 is fixedly coupled to the second wing 332 to protrude downward, and a screw groove 333a is formed on the inner peripheral surface.

A reinforcing rib 334 in the form of a concave groove may be additionally formed in the second round portion 331 to increase strength.

Preferably, the groove formed on the inner surface of the reinforcing rib 344 prevents the coupling force between the pipe (P) and the fixing member 30 from decreasing, which may occur as the pipe (P) expands and contracts depending on the external temperature. An elastic pad (not shown) may be additionally disposed to do this.

As another embodiment, as shown in FIG. 5, the piping repair device for the heterogeneous gas piping assembly according to the present invention may further include a reinforcing sheet adhesive portion 40 adhered to a portion of the edge of the repair member 10. there is.

Preferably, the reinforcement sheet adhesive portion 40 may be a reinforcement sheet made of carbon fiber.

For example, the reinforcing sheet made of carbon fiber is impregnated with 20 to 30% of a resin impregnating agent mainly composed of thermosetting resin that hardens at a high temperature of 150 ℃ or higher to 70 to 80% of the fiber core in which carbon fibers are evenly distributed in a lattice shape. It can be made to a thickness of 10 mm or less.

Here, the resin impregnated into the carbon fiber may include melamine and phenol.

A person skilled in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing its technical idea or essential features. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. The scope of the present invention is indicated by the scope of the claims described below rather than the detailed description above, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts are included in the scope of the present invention. must be interpreted.

10: Absence of maintenance
11: outer protective layer
12: adhesive layer
13: Filling layer
20: Pressure member
30: fixing member

Claims (8)

A repair member (10) installed to repair the damaged part of the pipe (P);
A pressing member (20) that presses and adheres the maintenance member (10) to the pipe (P); and
It includes a fixing member (30) that secures the pressing member (20) to the pipe (P) in a manner that surrounds the pressing member (20) and the pipe (P) up and down,
The repair member 10 has a rectangular shape and is formed with a constant thickness, and includes an outer protective layer 11 having an antifouling function; an adhesive layer (12) made of adhesive and disposed so that one side faces the outer protective layer (11); And a filling layer (13) interposed between the outer protective layer (11) and the adhesive layer (12) and composed of a filler that hardens when exposed to the outside by pressure,
The filling layer 13 of the repair member 10 is formed to protrude concavely in a downward direction,
The adhesive layer 12 of the repair member 10 is formed to protrude concavely in a downward direction along the filling layer 13, and the central portion of the adhesive layer 12 is formed when the filling layer 13 is pressed. A pipe repair device for a heterogeneous gas pipe assembly, characterized in that it includes a cut portion (12a) that allows the filling layer (13) to flow out to fill the damaged portion of the pipe (P). According to paragraph 1,
The pressing member 20 is formed in a semicircular shape curved at a certain curvature so as to surround the repair member 10, and is formed with a plurality of cut grooves 21 cut at a certain depth in the longitudinal direction, and the cut grooves ( A piping repair device for a heterogeneous gas piping assembly, characterized in that a plurality of ribs 22 are formed to protrude upward on both sides of 21). According to paragraph 1,
The fixing member 30 includes an upper member 31 disposed to surround the upper side of the pipe P; And a lower member 33 disposed to surround the lower side of the pipe P,
The upper member 31 includes a first round portion 311 configured to surround the upper side of the pipe (P); and a first wing portion 312 extending from the first round portion 311 and having a fastening hole (H) through which a fastening bolt passes,
The lower member 33 includes a second round portion 331 configured to surround the lower side of the pipe (P); and a second wing portion 332 extending from the second round portion 331 and provided with fastening means 333 to which fastening bolts are fastened,
The fastening means 333 of the second wing 332 is fixedly coupled to the second wing 332 to protrude downward and a screw groove 333a is formed on the inner peripheral surface of the heterogeneous gas piping assembly. Plumbing maintenance device. delete delete According to paragraph 1,
The adhesive layer 12 of the repair member 10 is a heat-sealable adhesive layer bonded by heat fusion, and when the repair member 10 is bonded to the surface of the pipe P during heat fusion, the temperature is 170~170. A piping repair device for a heterogeneous gas piping assembly, characterized in that it is heat-sealed under the conditions of 190°C, surface pressure of 2 to 3 MPa, and time of 2 to 4 seconds. According to paragraph 1,
A pipe repair device for a heterogeneous gas pipe assembly, characterized in that it further comprises a reinforcing sheet adhesive portion (40) adhered to a portion of the edge of the repair member (10). In clause 7,
The reinforcement sheet adhesive portion 40 is a reinforcement sheet made of carbon fiber, and the reinforcement sheet made of carbon fiber has a thermosetting resin that hardens at a high temperature of 150 ° C. or higher in 70 to 80% of the fiber core in which carbon fiber is evenly distributed in a lattice shape. A piping repair device for a heterogeneous gas piping assembly, characterized in that it is impregnated with 20 to 30% of the main resin impregnating agent and has a thickness of 10 mm or less.