KR102151703B1 - Polyethylene pipe structure for easy pipe detection line using conductive resin and electric wire - Google Patents

Abstract

The present invention relates to a pipe structure for easy pipe detection using a conductive resin and an electric wire, the pipe structure which includes a synthetic resin pipe, the electric wire installed on the outside of the synthetic resin pipe in a longitudinal direction, and the conductive resin which makes the synthetic resin pipe adhere to the synthetic resin pipe while enclosing the electric wire. The conductive resin includes 50 to 70 parts by weight of a synthetic resin, 10 to 15 parts by weight of conductive carbon, and 8 to 10 parts by weight of general carbon. According to the present invention, the electric wire attached to the synthetic resin pipe is enclosed with the conductive resin to protect the electric wire, and a connect for connecting the electric wires of the synthetic resin pipe and a neighboring synthetic resin pipe is improved, so that the connection of the wires can be perfect, reliable waterproofing can be achieved, and a connection work can be easily completed.

Description

Polyethylene pipe structure for easy pipe detection line using conductive resin and electric wire}

The present invention relates to a pipe structure that is easy to detect a pipe, and more particularly, to a conductive resin capable of effectively detecting a pipe by attaching a wire to a synthetic resin pipe with a conductive resin, and a pipe structure that is easy to detect a pipe using a wire.

Pipes are mainly used for transport of water, sewage, and gas. There are various types of such pipes, such as concrete pipes, cast iron pipes, and synthetic resin pipes, but recently, the use of synthetic resin pipes having excellent formability, workability, and chemical resistance is increasing.

When the synthetic resin pipe, which is an insulator, is buried in the ground, it is not easy to detect, and during excavation work such as embedding a new pipe, the pipe is frequently damaged, and accordingly, large accidents such as gas leakage or rupture of water and sewage pipes. As there is a concern about this, it is becoming an important task to determine the location of the underground pipeline.

There is a technology that detects pipelines by installing electric wires along synthetic resin pipes to detect synthetic resin pipes. In the case of detecting a pipeline by installing wires in this way, the electric field due to the current flowing through the wires is not uniform, noise is generated, and the wire covering in contact with groundwater hardens over time and the shape of the tree There is a problem that occurs.

In addition, in the case of electric wires, laying work is complicated, and there is a problem of rapid oxidation due to damaged or contaminated groundwater by other constructions.

In order to solve the above problems, a technique of attaching or embedding a metal wire to a synthetic resin pipe using a conductive resin is disclosed. For example, Korean Patent Application Publication No. 1999-030400 and Korean Patent Application Publication No. 10-1408920.

The prior art is a technology that prevents the metal wire from being disconnected by the conductive resin even if the metal wire is disconnected by attaching or embedding a metal wire in a synthetic resin pipe using a conductive resin.

However, in order for the metal wire to be directly attached by the conductive resin, in order to exert its effect, the conductive resin must be continuous at the connection part of the pipe, but it is not easy to make the conductive resin continuous at the connection part of the pipe. There is a problem that it is complicated and the cost increases.

In addition, since the conductive resin is exposed to the ground as a whole or at the connection portion of the tube, that is, grounded to the ground, there is a problem in that it is difficult to achieve a result of detecting a pipeline with a normal current.

In addition, in the case of Korean Patent Publication No. 10-1408920, when the conductive carbon black coating part is not smoothly mixed with the conductive carbon black and polyethylene, it is difficult to obtain a uniform conductivity, and the conductive carbon black coating part is extruded with an extruder. , There is a problem in that the physical properties are changed due to high heat, resulting in a decrease in conductivity, and the configuration of a sealed connector connecting the tube probe is complicated.

Republic of Korea Patent Publication No. 1999-030400 Korean Patent Publication No. 10-1408920

The present invention has been devised to solve the above problems, and by attaching a sheathed electric wire to a synthetic resin pipe with a conductive resin, a uniform electric field is generated and noise is not generated, so that the pipe can be effectively detected. At the same time, it is to provide a pipe structure that is easy to detect a pipe using a conductive resin and wires that minimize the hardening of the wire sheath or the water tree phenomenon.

In addition, the current flowing through the wire is prevented from being discharged to the ground by the covering, and a pipe structure that is easy to detect a pipe using a wire and a conductive resin without the difficulty of separately connecting the conductive resin at the connection point of the neighboring synthetic resin pipe. In the offering.

In addition, by firmly attaching the electric wire to the synthetic resin pipe with conductive resin, not only the difficulty of separately laying the electric wire is prevented, but also the conduit using conductive resin and electric wire that prevents the electric wire from being damaged by other works or from being rapidly oxidized by groundwater, etc. It is to provide a tube structure that is easy to detect.

In addition, by applying a general resin to the outside of the conductive resin to which the wire is attached, a conductive resin capable of preventing an unexpected discharge phenomenon through the conductive resin and a pipe structure that is easy to detect a pipe using a wire is provided.

In addition, by improving the connect that connects the wires of the synthetic resin pipe and the neighboring synthetic resin pipe, not only the connection of the wire is perfect, but also the connection work is easy, and it is possible to detect the pipeline using conductive resin and wires that can reliably achieve waterproofing. It is to provide an easy pipe structure.

A pipe structure that facilitates detection of a pipe path using a conductive resin and an electric wire according to an example of the present invention includes a synthetic resin pipe, a wire installed along the lengthwise direction on the outer side thereof, and being attached to the synthetic resin pipe while surrounding the wire. It includes a conductive resin, and the conductive resin may include 50 to 70 parts by weight of synthetic resin, 10 to 15 parts by weight of conductive carbon, and 8 to 10 parts by weight of general carbon.

The conductive resin may further include 2 to 4 parts by weight of a lubricant, 0.1 to 0.5 parts by weight of an antioxidant, 0.05 to 0.25 parts by weight of a heat stabilizer, and 0.05 to 0.25 parts by weight of an antistatic agent.

The physical properties of the conductive carbon are DBP absorption rate (mg/100g) 300-400, ash content (%) maximum 3, granulation (grit) content (ppm) maximum 150, moisture content (%) maximum 1, pH 7-10 days have.

The physical properties of the conductive carbon are DBP absorption rate (mg/100g) 400-550, ash content (%) maximum 1, granulation (grit) content (ppm) maximum 150, moisture content (%) maximum 1, pH 7.0-10.0 days have.

Further comprising a coating layer covering the conductive resin, the material of the coating layer may be a synthetic resin.

Further comprising a connector for interconnecting the wires respectively installed in the synthetic resin pipe and the synthetic resin pipe adjacent thereto, wherein the connector includes: a first member having an insertion hole into which one of the two wires is inserted, and a wire on the other side An external connector including a second member having an insertion hole to be inserted and being coupled to the first member to form one closed space with the first member; And an inner connector located inside the closed space of the outer connector and connecting the wires of the one side and the other side.

The inner connector may include a body portion installed to have a spaced apart from the outer connector in all directions of front and rear, up and down, left and right; And a rib part protruding from the body part to allow the body part to be spaced apart from the external connector.

The external connector includes an injection hole and a discharge hole, and by injecting an injection material into the spaced space through the injection hole, perfect watertightness can be secured.

The body portion of the inner connector includes a lower body having a recess-shaped seating groove along the front-rear direction; It may include an upper body installed on the upper side of the lower body while covering the electric wire installed in the seating groove.

A U-shaped or U-shaped lower socket installed in the seating groove of the lower body; And an upper socket installed on the upper body and configured to elastically press the electric wire installed on the lower socket to be connected, wherein the upper socket has a central protrusion protruding downward from the central portion and a front protruding downward from the front and rear of the central protrusion The protrusion and the rear protrusion may be connected to each other.

The wire is a copper wire, and the copper wires on both sides may be directly connected by extending to at least the central protrusion and simultaneously press-connected in multiple stages.

The wire includes metal-plated carbon fibers and copper wires disposed between the metal-plated carbon fibers, and the copper wires are formed to extend longer than the metal-plated carbon fibers and are pressed by the central protrusion to be directly connected, the The metal-plated carbon fibers may be pressed by the front protrusion and the rear protrusion to be connected by the upper socket and the lower socket.

According to the present invention, by attaching a sheathed electric wire to a synthetic resin pipe with a conductive resin, a uniform electric field is generated and noise is not generated, so that the pipeline can be effectively detected, and at the same time, the hardening of the electric wire or sutri Can be minimized.

In addition, the phenomenon that the current flowing through the wire is discharged to the ground is prevented by the coating, and there is no difficulty in separately connecting the conductive resin at the connection point of the adjacent synthetic resin pipe.

In addition, by firmly attaching the electric wire to the synthetic resin pipe with a conductive resin, not only the difficulty of separately laying the electric wire can be prevented, but also the electric wire can be prevented from being damaged by other works or from being rapidly oxidized by groundwater.

In addition, by applying a general resin to the outside of the conductive resin to which the wire is attached, it is possible to prevent unexpected discharge through the conductive resin.

In addition, by improving the connection connecting the electric wires of the synthetic resin pipe and the neighboring synthetic resin pipe, not only the connection of the electric wire is perfect, but also the connection operation is easy, and waterproofing can be reliably achieved.

1 is a cross-sectional view of an example of a pipe structure that is easy to detect a pipe using a conductive resin and a wire to which the present invention is applied
2 is a cross-sectional view of another example of a pipe structure in which pipe path detection is easy using a conductive resin and a wire to which the present invention is applied
3 to 6 are views showing the connect of the present invention
Figure 6a is a case in which the wire is a copper wire, Figure 6b is a view in the case where the wire includes a copper wire and metal-plated carbon fiber
7 is a view showing another embodiment of the internal connector of the present invention
8 to 9 are cross-sectional views of an installation state of a pipe structure for easy pipe detection using a conductive resin and wire to which the invention is applied

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to elements of each drawing, the same elements are assigned the same numerals as possible even if they are indicated on different drawings. In addition, in describing an embodiment of the present invention, when it is determined that a detailed description of a related known configuration or function interferes with an understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In addition, in describing the constituent elements of an embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, order, or order of the component is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected or connected to that other component, but another component between each component May be “connected”, “coupled” or “connected”.

1 is a cross-sectional view of a tube structure that is easy to detect a pipeline using a conductive resin and a wire according to an example of the present invention, and FIG. 2 is a cross-sectional view of another example.

The pipe structure 100 that is easy to detect a pipe using a conductive resin and an electric wire according to an example of the present invention may include a synthetic resin pipe 110, an electric wire 120, and a conductive resin 130.

The synthetic resin pipe 110 may be made of polyethylene (PE). In this embodiment, high density polyethylene (HDPE, High Density Polyethylene) may be used. High-density polyethylene is strong against impact and has excellent heat resistance and cold resistance.

The electric wire 120 is a line through which electric current flows, and may be installed outside the synthetic resin pipe 110 along the longitudinal direction. When the synthetic resin pipe 110 is buried, the electric wire 120 may use current to detect the location of the pipe. The electric wire 120 may be in the form of covering a metal such as copper (copper).

The conductive resin 130 may be attached to the synthetic resin pipe 110 while surrounding the wire 120 to protect and fix the wire 120. The conductive resin 130 may include 50 to 70 parts by weight of synthetic resin, 10 to 15 parts by weight of conductive carbon, and 8 to 10 parts by weight of general carbon.

The synthetic resin constituting the conductive resin 130 may be the same polyethylene (PE) as the synthetic resin pipe 110.

Conductive carbon imparts conductivity to PE materials that do not conduct electricity, and the length of the chain ring is long, so when mixed with PE materials, conductivity can be exhibited without decreasing conductivity. In addition, since conductive carbon has a very small impurity content, there is little deterioration in physical properties when mixed with other materials.

Table 1 below shows the properties of conductive carbon.

division GRADE A GRADE B DBP absorption rate (mg/100g) 300~400 400~550 Ash content (%) 3.0 Max 1.0 Max Grit content (ppm) 150 Max 150 Max Moisture content (%) 1.0 Max 1.0 Max pH 7.0~10.0 7.0~10.0

The DBP absorption rate is a measure of the degree of the surface area of conductive carbon. It is a principle of injecting a specific gas (generally 30% nitrogen, 70% helium gas) to the surface of a solid sample and adsorbing and desorbing it. It may be a value obtained by calculating the specific surface area and pore size distribution of the material. The grit content is a kind of abrasive component and may be a numerical value indicating the content of impurities generated during carbon black production.

General carbon has a large particle size, and can be used to disperse conductive carbon having a small particle size. If conductive carbon is mixed with the general carbon to evenly disperse, and then mixed with PE, which is a resin, dispersion and diffusion can be smoothly performed. In other words, general carbon has a larger particle size than conductive carbon, and it helps to disperse and diffuse the conductive carbon by preventing the phenomenon that the conductive carbon blended in PE is lumped to one side, and to make it smoothly mixed with PE, thereby increasing the conductivity by conductive carbon. I can.

In addition, the conductive resin 130 may further include 2 to 4 parts by weight of a lubricant, 0.1 to 0.5 parts by weight of an antioxidant, 0.05 to 0.25 parts by weight of a heat stabilizer, and 0.05 to 0.25 parts by weight of an antistatic agent.

When the lubricant is extruded by putting the conductive resin 130 into an extruder, additives for producing conductivity are sufficiently melted in the extruder, and the movement by the screw in the extruder can be smoothly performed. The lubricant prescribes an external lubricant and an internal lubricant, and the external lubricant serves to reduce the friction between a metal such as a die and a plastic resin, that is, a polymer, when extruding a conductive resin into an extruder. Can be used. The internal lubricant serves to reduce the frictional force between the existing resin (Polymer) and the conductive resin (Polymer) when extruding the conductive resin into the extruder, and zinc-based additives can be used.

The antioxidant may prevent the conductive resin 130 from being oxidized when the conductive resin 130 is put into an extruder and extruded at a temperature of 190 to 230°C. Antioxidants can be used as primary antioxidants and secondary antioxidants. Phenol series can be used as the primary antioxidant series, and phosphorus series can be used as the secondary antioxidant series.

Here, the primary antioxidant series is phenolic, but it is not toxic and can use a material that has passed through PDA.

When the conductive resin 130 is extruded at a temperature of 190 to 230°C by putting the conductive resin 130 into the extruder, the thermal stabilizer may prevent the change of physical properties due to high heat.

When the conductive resin 130 is extruded into an extruder, the antistatic agent may prevent degradation of properties of the conductive resin 130 due to electricity of a high voltage of 380 to 440 V supplied to the die. As an antistatic agent, ester alcohol, GMS (Glyceryl Mono-Stearate), and amine may be used.

In addition, a coating layer 140 covering the conductive resin 130 may be further included to prevent an electric discharge phenomenon of the conductive resin 130. That is, the sheathing of the electric wire 120 including the sheath may be peeled off for various reasons, and in this case, the current may be discharged to the ground through the conductive resin 130. The covering layer 140 may prevent or mitigate discharge through the conductive resin 130. That is, when the covering layer 140 completely seals the conductive resin 130, discharge can be completely prevented. The material of the covering layer 140 may be a synthetic resin, such as PE.

Referring to FIG. 2, at least one synthetic resin line 140 ′ is further formed in the synthetic resin pipe 110 to prevent bending of the synthetic resin pipe 110 and reinforce strength. That is, the synthetic resin line 140' is formed radially symmetrically to the synthetic resin tube 110, thereby preventing the bending of the synthetic resin tube 110 that occurs when the wire 120 is attached to only one side, and at the same time, the synthetic resin tube ( 110) can be reinforced.

In addition, referring to FIGS. 3 to 6, a connect 150 for interconnecting the electric wire 120 attached to the synthetic resin pipe 110 and the electric wire 120 ′ attached to the adjacent synthetic resin pipe 110 ′ It may contain more.

The connect 150 may include an external connector 151 located outside and an internal connector 152 located inside the external connector 151.

The external connector 151 includes a first member 151a having an insertion hole into which one of the electric wires 120 and 120 ′ of the synthetic resin pipe 110 ′ adjacent to the synthetic resin pipe 110, and the other side It may include a second member (151b) having an insertion hole into which the electric wire is inserted. The first member 151a and the second member 151b may be screwed or fitted to form a single closed space inside the first member 151a and the second member 151b.

The inner connector 152 has a body portion 153 installed to have a spaced apart from the outer connector 151 in all directions in front and rear, up and down, left and right, and the body portion 153 protruding from the body portion 153. It may include a rib portion 154 that allows 153 to be spaced apart from the external cannut 151.

The external connector 151 may include an injection hole 151c through which an injection material is injected and a discharge hole 151d through which air is discharged. The injection material is injected into the spaced space between the outer connector 151 and the inner connector 152 through the injection hole 151c to surround the inner connector 152, so that perfect waterproofing can be achieved. Silicone, epoxy, rubber, etc. may be used as the injection material.

The body part 153 covers the lower body 153a having a recessed seating groove in the front and rear direction, and the upper body installed on the upper side of the lower body 153a while covering the electric wire installed in the lower body 153a (153b) may be included.

A U-shaped or U-shaped lower socket (153c) installed in the seating groove of the lower body (153a) and an upper socket (153d) installed on the upper body (153b) and connected by elastically pressing an electric wire to the lower body (153a) ) May be further included. The material of the lower socket 153c and the upper socket 153d may be copper (copper) having excellent electrical conductivity.

The upper socket 153d may have a shape in which a central protrusion protruding downward from the central portion, and a front protrusion and a rear protrusion protruding downward from the front and rear of the central protrusion are connected to each other.

When the used wires 120 and 120 ′ are copper wires, they may be extended only to the front protrusion or the rear protrusion and connected by a socket, or may be directly connected by extending a central protrusion or more and connected by a socket.

In addition, a protrusion 153e protruding downward from the center of the central protrusion of the upper socket 153d and a depression provided in the center of the lower socket 153c so as to correspond to the protrusion 153e and accommodating the protrusion 153e It may further include a portion (153f). The recessed portion 153f may be formed by being bent into a concave shape without penetrating or penetrating it.

The rib part 154 may include a front rib provided in front of the body part 153, a rear rib provided in the rear of the body part 153, and a circumferential rib provided in the upper, lower, left and right circumferences of the body part 153. A plurality of peripheral ribs may be provided while being spaced apart. Further, referring to FIG. 7, the circumferential rib may be formed in a spiral shape from one side to the other side of the body part 153. The spiral-shaped circumferential rib allows the injection material to be completely injected from one side to the other, thereby ensuring reliable waterproofness.

The electric wires 120 and 120 ′ are copper wires, and the copper wires on both sides extend to at least the central protrusion to be directly connected and simultaneously press-connected in multiple stages.

The electric wires 120 and 120 ′ may include a copper wire disposed between metal plated carbon fibers and metal plated carbon fibers. In this case, the copper wires are extended longer than the metal-plated carbon fibers so that they are directly connected by being pressed by the central protrusion, and the metal-plated carbon fibers are urged by the front protrusion and the rear protrusion to the upper socket (153d) and the lower socket (153c). Can be connected by This double connection, that is, the copper wire is directly connected between the copper wires, and the carbon fibers are indirectly connected by the upper socket (153d) and the lower socket (153c), thereby ensuring perfect connectivity.

The upper body (153b) and the lower body (153a) may further include a wire fixing portion (153g) for fixing by pressing the wires 120 (120'). The wire fixing part 153g may be formed in a sawtooth shape while being positioned in front and rear of the upper body 153b and the lower body 153a. When the wire fixing part 153g press-fits and fixes the wires 120 and 120', it is possible to prevent the wires 120 and 120' from being removed.

The above-described copper wire may be plated with nickel or chromium on the outside. Nickel or chrome plating can completely prevent corrosion of copper wire.

In addition, the metal plated on the carbon fiber in the metal-plated carbon fiber may be plated with nickel or chromium after first plating with copper (copper). Copper (copper) can make nickel or chromium firmly attached to carbon fibers.

The metal-plated carbon fiber has excellent stiffness, corrosion resistance, and conductivity, so that it can withstand loads generated in a pipeline well, and corrosion can be prevented even by long-term soil or groundwater. In addition, the metal-plated carbon fiber has excellent fatigue strength and can well withstand bending that may occur during piping work.

The method of extending the copper wire longer in a wire including metal-plated carbon fibers and copper wires is to bend the whole at a certain angle and remove the force, the carbon fibers return to their original state and the copper wires remain bent. The fibers can be partially cut.

The following describes the manufacturing and construction process of the present invention configured as described above.

First, 50 to 70 parts by weight of synthetic resin, 10 to 15 parts by weight of conductive carbon, 8 to 10 parts by weight of general carbon, 2 to 4 parts by weight of lubricant, 0.1 to 0.5 parts by weight of antioxidant, 0.05 to 0.25 parts by weight of heat stabilizer, antistatic agent The conductive resin mixture containing 0.05 to 0.25 parts by weight may be supplied to the first extruder and melted by applying heat to form the conductive resin 130.

In addition, it is possible to heat with hot air while scratching the surface of the previously manufactured synthetic resin pipe, that is, the part to which the electric wire is attached, with a scraping member, or with hot air without scratching.

The electric wire 120 may be attached to the surface of the synthetic resin pipe 110 by supplying the molten conductive resin 130 to the first extruder to the surface of the synthetic resin heated by the hot air and simultaneously supplying the electric wire 120. The wire 120 is formed longer than the synthetic resin pipe 110 and both ends may not be attached to the pipe.

On the other hand, the same material as the synthetic resin pipe 110 may be supplied to the second extruder and melted by applying heat to form a synthetic resin. The synthetic resin may be supplied to the surface of the conductive resin 130 before the conductive resin 130 is hardened or the surface of the hardened conductive resin 130, and is cooled at the same time as it surrounds the conductive resin 130 and hardens to form the covering layer 140.

Referring to FIG. 8, the synthetic resin pipe may be a pipe having the same diameter. In this case, an adhesive guide plate is placed between the synthetic resin pipe 110 to which the electric wire 120 is attached and the adjacent synthetic resin pipe 110', and after melting the end of the synthetic resin pipe with heat generated from the adhesive guide plate, the adhesive guide plate is removed. It can be melt-bonded by making it close together.

Referring to FIG. 9, the synthetic resin pipe may be a pipe whose one side is expanded, and the front end of the synthetic resin pipe 110 to which the electric wire 120 is attached through the above process is inserted into the rear end of the adjacent synthetic resin pipe 110' And it can be fastened and fixed with bolts/nuts through the pressure ring.

In addition, the synthetic resin pipe 110 coupled through the above process and the electric wires 120 and 120 ′ attached to the adjacent synthetic resin pipe 110 ′ may be interconnected by a connector 150. Each of the wires 120 and 120 ′ attached to the synthetic resin pipe 110 and the adjacent synthetic resin pipe 110 ′ is connected to the first member 151a and the second member 151b of the external connector 151. ), and the ends of the electric wires 120 and 120 ′ protruding into the inside of each member can be connected to the inner connector 152. That is, the ends of the wires 120 and 120 ′ are respectively seated on both sides of the lower body 153a, and the wires 120 and 120 ′ are respectively attached to the wire fixing portions 153g on both sides of the body 153 The metal-plated carbon fiber may be seated on both sides of the lower socket 153c, and the copper wire may overlap and be seated at the center of the lower socket 153c. The metal-plated carbon fiber is seated at a position corresponding to the front protrusion and the rear protrusion of the upper socket 153d described below, and the copper line is overlapped with the central protrusion of the upper socket 153d described below. Can be settled.

When the electric wire is seated on the lower body 153a, the upper body 153b may be coupled to the lower body 153a by hook coupling. At this time, while the upper socket (153d) installed on the upper body (153b) is coupled to the lower socket (153c) can be connected by pressing the wire. The front protrusion and the rear protrusion of the upper socket 153d may press the metal-plated carbon fiber, and the central protrusion may press the overlapped copper wire. The protrusion 153e protruding in the center of the central protrusion presses the overlapped copper wire, and at the same time, the copper wire may be positioned in the depression 153f while being pressed by the pressing force of the protrusion 153e. In addition, the wire fixing part 153g pressurizes the outer surface of the wire, so that the connected state of the wire can be firmly maintained.

When connected to the inner connector 152 through the above process, the first member 151a and the second member 151b of the outer connector 151 are moved and combined by fitting or screwing to connect the inner connector 152. Can be accommodated.

At this time, a rib portion 154 including a front rib, a rear rib, and a circumferential rib protruding from the outer surface of the body portion 153 of the inner connector 152 is disposed on the inner surfaces of the first member 151a and the second member 151b. In close contact with each other, a spaced space may be provided between the body portion 153 and the inner surfaces of the first member 151a and the second member 151b by the protruding length of the rib portion 154. In the spaced space, an injection material is injected through the injection hole 151c of the external connector 151 until discharged to the discharge hole 151d, thereby completely waterproofing the inner connector 152.

By repeating the above process, it is possible to form a pipe by interconnecting a neighboring synthetic resin pipe, another neighboring synthetic resin pipe, and an electric wire attached to each pipe. The conduit can detect the location of the conduit by supplying current to the electric wire attached to each conduit.

In the above, even if all the constituent elements constituting an embodiment of the present invention have been described as being combined into one or operating in combination, the present invention is not necessarily limited to these embodiments. That is, within the scope of the object of the present invention, all the constituent elements may be configured or operated by selectively combining one or more. In addition, terms such as "include", "consist of" or "have" described above mean that the corresponding component may be present unless otherwise stated, excluding other components Rather, it should be interpreted as being able to further include other components. All terms, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art, unless otherwise defined. Terms generally used, such as terms defined in the dictionary, should be interpreted as being consistent with the meaning of the context of the related technology, and are not interpreted as ideal or excessively formal meanings unless explicitly defined in the present invention.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains will be able to make various modifications and variations without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain the technical idea, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

100: pipe structure 110: synthetic resin pipe
120: wire 130: conductive resin
140: cladding layer 150: connect

Claims (12)

A synthetic resin pipe, an electric wire installed along the lengthwise direction on the outer side thereof, and a conductive resin to be attached to the synthetic resin pipe while surrounding the electric wire,
The conductive resin includes 50 to 70 parts by weight of synthetic resin, 10 to 15 parts by weight of conductive carbon, 8 to 10 parts by weight of general carbon,
Further comprising a connector for interconnecting wires respectively installed in the synthetic resin pipe and the synthetic resin pipe adjacent thereto,
The connect,
A first member having an insertion hole into which one of the two wires is inserted, and an insertion hole into which the other side of the wire is inserted, and is coupled to the first member to form a closed space together with the first member An external connector including a second member; And
Including; an inner connector located inside the closed space of the outer connector and connecting the wires of the one side and the other side,
The inner connector may include a body portion installed to have a spaced apart from the outer connector in all directions of front and rear, up and down, left and right; And a rib portion protruding from the body portion to allow the body portion to be spaced apart from the external connector; and
The external connector includes an injection hole and a discharge hole, and an injection material is injected into the spaced space through the injection hole, thereby securing perfect watertightness. The method according to claim 1,
The conductive resin further comprises 2 to 4 parts by weight of a lubricant, 0.1 to 0.5 parts by weight of an antioxidant, 0.05 to 0.25 parts by weight of a heat stabilizer, and 0.05 to 0.25 parts by weight of an antistatic agent. . The method according to claim 1,
The physical properties of the conductive carbon are DBP absorption rate (mg/100g) 300-400, ash content (%) maximum 3, granulation (Grit) content (ppm) maximum 150, moisture content (%) maximum 1, pH 7-10. A pipe structure that makes it easy to detect pipes using conductive resins and wires. The method according to claim 1,
The physical properties of the conductive carbon are DBP absorption rate (mg/100g) 400-550, ash content (%) maximum 1, granulation (Grit) content (ppm) maximum 150, moisture content (%) maximum 1, pH 7.0-10.0. A pipe structure that makes it easy to detect pipes using conductive resins and wires. The method according to claim 1,
Further comprising a coating layer covering the conductive resin,
The material of the coating layer is a synthetic resin, characterized in that the pipe structure easy to detect a pipe using a conductive resin and a wire. delete delete delete The method according to claim 1,
The body portion of the inner connector includes a lower body having a recess-shaped seating groove along the front-rear direction; A pipe structure that covers the electric wire installed in the seating groove and facilitates detection of a pipeline using a conductive resin and electric wire including an upper body installed on the upper side of the lower body. The method of claim 9,
A U-shaped or U-shaped lower socket installed in the seating groove of the lower body; And an upper socket installed on the upper body and configured to elastically press the wire installed on the lower socket to be connected,
The upper socket has a central protrusion protruding downward from the center and a front protrusion and a rear protrusion protruding downward from the front and rear of the central protrusion. The method of claim 10,
The wire is a copper wire, and the copper wires on both sides extend to at least the central protrusion and are directly connected and simultaneously press-connected in multiple stages. The pipe structure for easy pipe detection using conductive resin and wires. The method of claim 10,
The electric wire includes metal-plated carbon fibers and copper wires disposed between the metal-plated carbon fibers,
The copper wires are formed to extend longer than the metal-plated carbon fibers and are pressed by the central protrusion to be directly connected, and the metal-plated carbon fibers are pressed by the front protrusion and the rear protrusion to be connected by the upper socket and the lower socket. Pipe structure that makes it easy to detect pipes using conductive resins and wires.

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