KR101846395B1 - Apparatus for preventing corrosion of cable terminal in electric power duct - Google Patents

Abstract

The present invention relates to a device to prevent corrosion of a cable connector terminal in an electric power duct, capable of preventing corrosion of a cable. According to the present invention, the device comprises: first and second waterproof rings (20, 30) coupled to the outer circumferential surface of first and second cables, respectively; a tube formed by assembly of first and second tube plates with a hemispherical cross section, having a space formed inside for connection of the first and second cables, and having a working hole where the inside communicates with the outside, wherein both longitudinal sides are coupled to a circumferential part of the first and second waterproof rings, respectively; first and second curtains (40, 50) having a ring shape through which the first and second cables are penetrated, and disposed separately inside the tube at a predetermined distance to support the first and second cables and also block a connector of the first and second cables; a cover (60) to open/close the working hole of the tube; and a hose (70) assembled to the cover, allowing the inside and outside of the tube to communicate and be opened/closed by a valve.

Description

FIELD OF THE INVENTION [0001] The present invention relates to an apparatus for preventing corrosion of a power cable,

More particularly, the present invention relates to an electric power cable connection terminal, and more particularly, to a power cable connection terminal, more specifically, to provide a watertight connection between a connection portion of cables and water, The present invention relates to an apparatus for preventing corrosion of a power cable cable connection terminal, which effectively prevents corrosion of a cable by discharging it to the outside.

Generally, cables for power supply are buried in residential, commercial and industrial parks.

On the other hand, due to the increase in the population, the number of apartments is increasing due to the decrease of the residential space. These apartments are fully equipped with indoor facilities and are very convenient to use. .

In the past, the construction of conventional apartment houses has been rapidly accelerating as the industrialization has accelerated, and the supply of electric power is rapidly increasing from the production site to the consumer through the cable. , And it is buried in the ground at a certain depth from the ground. In order to route the cables to the ground in this way, power lines, which are ducts, are used.

The power cable is wired to the receiver through the power port, and the connection occurs in this process. The connection portion is not a connection between the cables in the power port, a connection portion between the cables, but a portion where the cable is drawn out to the outside of the power generating portion and a portion that is drawn into the receiving portion after being drawn out from the power generating portion.

It is very important for the power cable to insulate the conductor. For this purpose, the insulating layer for insulating the conductor is made of, for example, XLPE (Cross-linked Polyethylene) or the like, .

Meanwhile, the power cable is connected by a joint box at intervals of several hundred meters or tens of km, and the end of the power cable is connected by a termination part.

However, due to external factors, the outer semiconductive layer of the power cable may be removed to expose the insulating layer, and exposure of the insulating layer may cause corrosion of the terminal, thereby causing a trouble in the power supply.

Patent Document No. 10-1365186 discloses a power transmission device comprising an axial tube portion formed of a cylindrical material and axially guided so as to be connected to a metallic sheath of the power cable, a cylindrical main pipe portion having no axial pipe or widened pipe, And a clamping force assisting portion protruding in one direction convexly to assist the clamping force between the flanges is formed at a predetermined position of the expansion flange portion. It is a protection tube for cable connection box.

Patent Document 10-11888882 discloses a power transmission device including a protective cover which surrounds and protects a periphery of a terminal connecting a power transmission distribution transformer line and a cable, and is supported by an insulator; A first packing in the form of a cylinder, which is inserted into the upper portion of the protective cover and is closely attached to the periphery of the cable to tightly seal the upper opening of the protective cover; A cylindrical fastening screw threadably fastened to an upper portion of the protective cover to tightly tighten the protective cover and the first cover; A second wedge-shaped packing inserted into the upper opening of the tightening unit while being wedge-shaped, the second packing being coupled to a periphery of the cable; An excellent barrier skirt formed to have a diameter larger than that of the protective cover and mounted on the periphery of the protective cover with an interval therebetween; And a circulating fan mounted inside the superior blocking skirt and forcibly circulating outside air inside the protective cover.

Registration No. 10-1365186 Patent No. 10-1188882

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a watercraft which is watertight so as to prevent water from penetrating a connecting portion of cables, And to provide an electric corrosion prevention device for a power cable cable connection terminal which effectively prevents the corrosion of the cable by draining it.

Another object of the present invention is to use a material which is oxidized prior to a cable so that the cable can be maintained without being oxidized.

The present invention provides a power cable connection terminal terminal corrosion prevention device comprising: first and second exponential rings respectively coupled to outer circumferential surfaces of first and second cables; A first and a second tube plate having a semicircular cross section and having a space for connection of the first and second cables therein, a work hole communicating with the inside and the outside, A tube coupled to the periphery of the two exponential rings; The first and second cables are arranged in a ring shape passing through the first and second cables with a predetermined distance therebetween to support the first and second cables, , 2 curtains; A cover for opening and closing a working hole of the tube; And a hose which is assembled to the lid and opens and closes by the valve so that the inside and the outside of the tube communicate with each other and the first and second exponential rings are elastically deformed by the assembly of the first and second tube plates of the tube Wherein the first and second curtains are in close contact with the outer circumferential surfaces of the first and second cables to allow water to penetrate along the outer circumferential surface of the first and second cables Wherein the cover includes a cover body for opening and closing the work hole and first and second insertion portions protruding from the cover body and wrapping the first and second cables at an end thereof, And first and second supports for supporting the 1,2 cables at the bottom.

The present invention is characterized in that the first and second insertion portions of the first and second supports are made of materials that are oxidized prior to the first and second cables.

According to the present invention, it is possible to prevent penetration of external water into the connection portion of the cable through the structure of the tube (first and second curtains, first and second index rings) 1, 2, 3, 4, 5, 6, 7, 8, 9, 9, 9, 10, 11, 12, There is an effect that the connection portion is simply kept in a dry state to protect the cable.

In addition, the connection and repair work of the cable is very easy because the cable can be connected and disconnected through the separation of the cover. In addition, the corrosion of the cable is confirmed by separating only the cover, .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side cross-sectional view showing the inside of a power port cable connection terminal corrosion prevention device according to the present invention. FIG.
FIG. 2 is a front sectional view showing first and second tube plates of a tube applied to an apparatus for preventing terminal corrosion of a power cable connection terminal according to the present invention. FIG.
3 is an exploded perspective view of a power port cable connection terminal corrosion prevention device according to the present invention.
4 is an external perspective view of an apparatus for preventing terminal corrosion of a power cable connection terminal according to the present invention.
5 is a view showing an example in which a corrosion preventing strip is applied to a power port cable connecting terminal terminal corrosion preventing apparatus according to the present invention.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and these may be changed according to the intention of the user, the operator, or the like. Therefore, the definition should be based on the contents throughout this specification.

As shown in FIGS. 1 to 4, the apparatus for preventing corrosion of a power cable connector terminal according to the present invention includes a connection space of the first and second cables 1 and 2, (10) having a connecting portion (a portion to which a terminal or a wire of a covering is connected) is connected to both sides in the longitudinal direction of the tube (10) The first and second exponential rings 20 and 30 are brought into close contact with the outer circumferential surfaces of the first and second cables 1 and 2 in the housing 10 so that the connecting portions of the first and second cables 1 and 2 A lid 60 for opening and closing a working hole of the tube 10, a hose for connecting the connection space of the first and second cables 1 and 2 to the outside 70).

The tube 10 is formed by assembling the first and second tube plates 11 and 12 having a semicircular cross section and is provided with a packing 13 between the first and second tube plates 11 and 12 ).

The first and second tube plates 11 and 12 can be finished with waterproof bands at both ends in the longitudinal direction. In addition, the first and second tube plates 11 and 12 may be configured to be folded on one side by a hinge.

The first and second tube plates 11 and 12 have the same structure and are made of a single metal mold. The inner circumferential surface of the first and second tube plates 11 and 12 is provided with a curtain insertion groove into which the first and second curtains 40 and 50 are inserted.

The tube 10 is provided with a work hole 14 so that the inside and the outside can communicate with each other, that is, the first and second cables 1 and 2 can be connected to each other.

The work hole 14 may be formed on one side of the first and second tube plates 11 and 12 or may be formed in half by assembling the first and second tube plates 11 and 12 into a complete shape .

The first and second tube plates 11 and 12 are assembled in a fitting manner by irregularities so as to prevent water from penetrating into the first and second tube rings 20 and 30, Grooves 21 and 31 are formed in the circumferential portion of the exponent rings 20 and 30 and protrusions 11a and 12a are fitted in the grooves 21 and 31 in the inner circumferential surfaces of the first and second tube plates 11 and 12, .

The packing 13 is applied to the joining portion of the first and second tube plates 11 and 12, the joining portion of the lid 60, and the like.

The first and second exponential rings 20 and 30 are ring-shaped to be coupled to the outer circumferential surfaces of the first and second cables 1 and 2. The first and second exponential rings 20 and 30 are elastically deformed And one or more elastic guide portions 22 and 32, which are empty spaces, are formed in order to increase the adhesiveness due to elastic deformation. .

The elastic guide portions 22 and 32 can be formed in a space that is blocked from the outside and a groove in which one side communicates with the outside.

The first and second curtains 40 and 50 are formed in a ring shape having first and second wiring holes 41 and 51 through which the first and second cables 1 and 2 respectively pass, , And inserted into the curtain insertion grooves of the two tube plates (11, 12) to protect the connection portions of the first and second cables (1,2).

That is, the first and second curtains 40 and 50 are disposed on both sides of the connection portions of the first and second cables 1 and 2, respectively, so as to flow along the outer circumferential surface So that water can not flow to the connecting portions of the first and second cables (1, 2) and also prevents sagging of the first and second cables (1, 2).

The first and second curtains 40 and 50 are connected to the first and second curtains 40 and 50 so that the first and second cables 1 and 2 can be easily wired and the first and second cables 1 and 2 having different thicknesses can be wired. (42, 52) which are divided into a plurality of portions around the holes (41, 51) through an incision to be brought into close contact with the outer circumferential surface of the first and second cables (1,2).

In addition, the first and second curtains 40 and 50 are provided with one or more ventilation holes 43 and 53 so that air can be circulated while preventing the infiltration of moisture.

The lid 60 opens and closes the work hole 14 of the tube 10 and the lid body 61 and the first and second supports 62 and 63 to support the first and second cables 1 and 2 .

The lid body 61 is detachably assembled through fitting (fitting and fastening or fitting and bending) into the working hole 14 with an area for closing the working hole 14. [

The first and second supporting members 62 and 63 are formed as protruding rods on the inner surface of the lid 61. The first and second supporting members 62 and 63 include first and second insertion portions 62a and 62b, And 63a.

The first and second inserting portions 62a and 63a are in the form of "U "

The lid 60 having such a configuration separates the first and second cables 1 and 2 from the floor through the first and second supports 62 and 63 to prevent contact with water.

The hose 70 allows the inside of the tube 10 to communicate with the outside, and both air circulation and water drainage are possible.

The hose 70 includes three internal ports 71, 72 and 73 connected to three spaces in consideration of the fact that the tube 10 is divided through the first and second curtains 40 and 50, 71, 72, 73, respectively.

A valve 75 is provided in the external port 74 to allow the connection and disconnection of the inside and outside of the tube 10 to be controlled.

The hose 70 is secured to the lid 60 and assembled with the lid 60.

The hose 70 may be used independently of the lid 60 by connecting the port 71 to the tube 10 while avoiding the lid 60. [

The tube 10, the first and second index rings 20 and 30, the first and second cuts 40 and 50, the lid 60 and the hose 70 are made of a non-conductive material.

The first and second inserting parts 62a and 63a of the first and second supporting frames 62 and 63 are separated from each other and the first and second inserting parts 62a and 63a are connected to the first and second cables 62 and 63, (Zinc, magnesium, etc.) which is corroded before the first and second plates 1, 2.

The first and second supporting members 62 and 63 are connected to the first and second supporting member bodies protruding from the lid body 61 and the first and second cables 1 and 2, The first and second cables 1 and 2 are inserted into the first and second inserting portions 62a and 63a due to the peeling of the insulating tape and the like. The first and second inserting portions 62a and 63a are first oxidized more than the first and second cables 1 and 2 and the first and second cables 1 and 2 are reversely reduced in the process, .

The first and second inserting portions 62a and 63a are used when the first and second inserting portions 62a and 63a are oxidized. Therefore, the first and second inserting portions 62 and 63 can be fitted to each other by irregularities for easy replacement.

At this time, the first and second inserting portions 62a and 63a may be checked and replaced periodically, or the cover body 61 may be made transparent so that the first and second inserting portions 62a and 63a can be visually confirmed from the outside.

5, the first and second inserting portions 62a and 63a may be replaced with a single body, that is, a corrosion prevention band 65. [

The anti-corrosive band 65 is made of the above-mentioned material in a curved shape (for example, semicircular or U-shaped) and is fitted to the first and second supports 62 and 63 at the bottom, 2 and the first and second cables 1 and 2 are excellent in preventing oxidation.

The lid body 61 may also form a water collecting section which is opened toward the upper part by forming a step on the periphery of the first and second support rods 62 and 63.

1,2: First and second cables,
10: tube, 11,12: first and second tube plates
20, 30: first and second index rings, 40, 50: first and second curtains
60: cover, 61: cover body
62, 63: first and second supports, 70: hose
71, 72, 73: internal port, 74: external port
75: Valve,

Claims (3)

First and second exponential rings respectively coupled to outer circumferential surfaces of the first and second cables;
A tube in which a space for connection of the first and second cables is provided therein, a working hole communicating with the inside and the outside, and both sides in the longitudinal direction are respectively coupled to the circumferential portions of the first and second exponent rings;
The first and second cables are arranged in a ring shape passing through the first and second cables with a predetermined distance therebetween to support the first and second cables, , 2 curtains;
A cover for opening and closing a working hole of the tube;
And a hose which is assembled to the lid and opens and closes by a valve to communicate the inside and the outside of the tube with each other,
Wherein the first and second index rings are elastically deformed by the assembly of the tubes and are in close contact with the outer circumferential surface of the first and second cables,
Wherein the first and second curtains include a plurality of tight contact portions that are closely attached to the outer circumferential surfaces of the first and second cables and block water penetration along the outer circumferential surface of the first and second cables,
The lid includes a lid body for opening and closing the work hole and first and second insertion portions protruding from the lid body and wrapping the first and second cables at ends thereof, The first and second support members,
Wherein the first and second supports are made of materials that are oxidized prior to the first and second cables and are replaceable. delete The apparatus of claim 1, wherein the lid body includes a collecting portion that opens upward.

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