KR101943369B1 - Safety device for insulation connector of underground line - Google Patents

Abstract

The present invention relates to a safety device for the insulation connector of an underground line. According to an embodiment of the present invention, the safety device for the insulation connector of an underground line includes a lead wire; a drawing wire; a connector; and a protection means. The connector can be prevented from coming into contact with water.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for an underground distribution line,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for a wire connecting line with an underground distribution line, and more particularly, to a safety device for a wire connecting line with an underground distribution line protecting a connector connecting a lead wire and a lead wire.

Generally, the processing facilities using electric poles have been widely used to supply electric power to the electric power customers in urban areas, but these processing facilities are being replaced with underground facilities for safety reasons and for cosmetic reasons in the city.

Underground distribution lines are installed in the underground pipelines embedded in the underground and connected to the ground level distribution boards through connectors.

The connector is connected at both ends to a lead wire leading from the power source and a lead wire drawn out from the switchboard so that power is supplied from the power source to the switchboard.

However, when a large impact such as an earthquake or a gas explosion occurs, the impact is transmitted through the lead wire provided in the underground pipe, so that the connection state of the lead wire and the connector for connecting the lead wire may be damaged.

In this case, if the incoming wire is short-circuited, it can be directly connected to the explosion or fire. If the incoming wire is in contact with the underground pipe, a short circuit may occur and there is a possibility of electric shock to nearby people.

Especially in case of flooding due to the flow of conductive water into the underground pipeline or underground pipeline during the summer heavy rainfall or rainy season, there is a possibility of causing more serious accidents.

Korean Patent No. 10-0907747 (July 7, 2009)

It is an object of the present invention to provide a safeguard apparatus for an underground distribution line with an underground distribution line which can prevent a connector from being in contact with water in the event of flooding.

And to provide a safety device for a wire connecting line with an underground distribution line which can prevent a short circuit or a short circuit of the incoming wire when a certain amount of water flows in.

According to an aspect of the present invention, there is provided a safeguard apparatus for an underground distribution line, including: a lead wire installed in an underground pipe embedded in the ground; An outgoing wire supplied with power from the incoming wire; A connector for electrically connecting the lead-in wire and the lead-out wire in the underground pipe; And protection means disposed in the underground pipe; Wherein one end of the connector is connected to a first conductor core exposed at an end of the lead wire and the other end is connected to a second conductor core exposed at an end of the lead wire, A connecting bar provided with a first notch in a reduced shape and a second notch located under the first notch, draw-out connecting means connecting one end of the connecting bar to the first conductor core, And a lead-out connecting means for connecting the other end of the connecting bar, wherein the protecting means is provided in the form of wrapping the first conductor core wire, the second conductor core wire and the connector so that the first conductor core wire, And a cover which is fixed in the underground pipe and is coupled with the cover and is variable in accordance with a degree of inflow of water into the ground or the underground pipe, Wherein the cover includes a first body in a columnar shape that surrounds the first conductor core, the second conductor core, and a portion of the connector, and a second body that is coupled to the first body, A first body and a second body formed on the bottom surface of the first body and the second body and surrounding the second conductor core and the remaining part of the connector; A coupling member provided on the first body and the second body to allow the first body and the second body to be coupled to each other, a packing provided between the first body and the second body to increase airtightness of the cover, A first notch formed in the first body or the second body and having a first insertion groove provided in the same line as the first notch and a second insertion groove formed in the lower side of the first insertion groove, Second Insert Wherein the cutting device comprises a fixing plate which is brought into contact with the inner surface of the underground pipe and which is fixed to the underground pipe by fixing means, a base plate which is provided in the underground pipe so as to be perpendicular to the fixing plate, A first elastic body provided between the upper plate and the base plate to elastically move the upper plate in a longitudinal direction, a first cutting bar provided inside the upper plate, A second elastic body provided at one side of the first cutting bar to allow the first cutting bar to elastically move laterally to be inserted into the first insertion groove and then cut the first notch; A support plate provided on one end of the lower plate of the fixing plate to support the lower plate, a second cutting bar provided inside the lower plate, And a third elastic body provided on one side of the second cutting bar to allow the second cutting bar to elastically move laterally to insert the second cutting bar into the second insertion groove and then cut the second notch.

The first insertion groove and the second insertion groove may be respectively provided with a cap for increasing airtightness of the cover.

According to the safety device of the underground distribution line with the wire connecting rod according to the present invention, it is possible to prevent the connector from coming into contact with water in the event of flooding.

In addition, it is possible to prevent a short circuit or a short circuit of the incoming wire when a certain amount of water flows in.

1 is a view showing a state where a safety device of a wire connecting rod is installed with an underground distribution line according to an embodiment of the present invention.
Fig. 2 is an enlarged view showing a normal state of the safety device of the underground distribution line with the wire connection shown in Fig. 1; Fig.
3 is a perspective view showing the cover shown in Fig.
Figure 4 shows the connector shown in Figure 2;
FIG. 5 and FIG. 6 are enlarged views showing an emergency state of the safety device of the underground distribution line with the wire connection shown in FIG. 2;
Fig. 7 is a view showing a modification of the safety device of the underground distribution line to the wire connecting part shown in Fig. 1;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a safety device for a wire connecting line with an underground distribution line according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a view showing a state where a safety device of a wire connection line is installed by a ground distribution line according to an embodiment of the present invention, FIG. 2 is an enlarged view showing a normal state of a safety device of a wire connection line by the underground distribution line shown in FIG. Fig. 3 is a perspective view showing the cover shown in Fig. 2, and Fig. 4 is a view showing the connector shown in Fig.

1 to 4, the safety device 10 of the underground distribution line wire line according to an embodiment of the present invention includes a lead wire 100, a lead wire 200, a connector 300, and a protection means 400 ).

The lead wire 100 is installed on the ground and is connected to the switchboard 40 protected by the power distribution box 50 and the first conductor core wire 110 may be exposed at the end of the lead wire 100.

The incoming wire 200 is installed in the underground pipe 30 embedded in the underground 20 under the ground 21 and the second conductor 210 is exposed at the end of the incoming wire 200 .

The connector 300 may function to electrically connect the lead wire 100 and the lead wire 200 in the underground pipe 30. To this end, the connector 300 may include a connecting bar 310, a lead connecting means 320 and a lead connecting means 330.

The connection bar 310 may have a first conductor core 110 connected to one end and a second conductor core 210 connected to the other end. The connection bar 310 may include a first notch 311 and a second notch 312 at an intermediate portion thereof. The first notch 311 and the second notch 312 are located on the same line in the lengthwise direction of the connecting bar 310. When the first notch 311 and the second notch 312 are arranged in the vertical direction, Can be located on the upper side. The first notch 311 and the second notch 312 are formed to have a reduced sectional area so that the tensile stress and shear stress of the first notch 311 and the second notch 312 are weaker than those of the other portions . Accordingly, when the impact is applied, stress concentration can be applied to the portion where the first notch 311 or the second notch 312 is formed.

The lead connection means 320 connects the first conductor wire 110 of the connection bar 310 and the lead connection means 330 connects the connection bar 310 and the second conductor wire 210 can do.

The protection means 400 is disposed in the underground piping 30 and removes the connector 300 connected to the lead wires 100 and the lead wires 200 from the water flowing along the ground 21 or the underground pipe 30 It can play a protective role. To this end, the protective means 400 may include a cover 410 and a cutting device 420.

The cover 410 includes a first conductor core 110, a second conductor core 210, and a connector 300, which are provided in the form of a check, 300 to prevent the water flowing into the underground pipe 30 from contacting the first conductor core 110, the second conductor core 210, or the connector 300. The cover 410 includes a first body 411, a second body 412, a fixing groove 413, a coupling member 414, a packing member 415, A first insertion groove 416 and a second insertion groove 417. [

The first body 411 may be formed in a columnar shape so as to surround the first conductor core 110, the second conductor core 210, and a part of the connector 300. The second body 412 may be formed in a columnar shape like the first body 411 and may be formed to surround the first conductor core wire 110, the second conductor core wire 210, and the remaining part of the connector 300 have. In this embodiment, the first body 411 and the second body 412 have a cylindrical shape. However, the first body 411 and the second body 412 may have a polygonal columnar shape.

The fixing groove 413 is formed on both bottom surfaces of the first body 411 and the second body 412 so that the end of the lead wire 100 and the end of the lead wire 200 can be inserted and fixed. The first conductor core wire 110 and the second conductor core wire 210 are not inserted and fixed into the fixing groove 413 but the end of the lead wire 100 and the end of the lead wire 200 are inserted and fixed, The core wire 110 and the second conductor core wire 210 may be completely seated in the cover 410.

The coupling member 414 is provided on the first body 411 and the second body 412 and the first body 411 and the second body 412 can be coupled through the coupling member 414. In this embodiment, the shape of the coupling member 414 is that the first body 411 has a groove (not shown) and the second body 412 has a projection (not shown) As shown in FIG.

The packing member 415 is provided between the first body 411 and the second body 412 to increase the airtightness of the joint portion generated when the first body 411 and the second body 412 are engaged, It is possible to prevent the inflow of the water introduced into the submerged pipe 30 through the pipe 30.

The first insertion groove 416 may be provided in the first body 411 or the second body 412 and may be provided so as to be in line with the first notch 311 of the connection bar 310. The second insertion groove 417 may be provided in the first body 411 or the second body 412 in the same manner as the first insertion groove 416 and may be the same as the second notch 312 of the connection bar 310 As shown in FIG. Accordingly, the first insertion groove 416 may be located above the second insertion groove 417. [

The cutting device 420 includes a fixing plate 421, a base plate 422, an upper plate 423, a first elastic body 424, a first cutting bar 425, a second elastic body 426, a lower plate 427, A protrusion 4211, a second cutting bar 428, and a third elastic body 429.

The fixing plate 421 may be fixed to the underground pipe 30 by the fixing means 500 while being in contact with the inner surface of the underground pipe 30.

The base plate 422 is disposed in the submerged pipe 30 and may be provided so as to be perpendicular to the fixed plate 421. The base plate 422 may be fixed to the fixing plate 421 in a vertical direction with the fixing plate 421 and may be coupled to the cover 410. Thus, the cover 410 can be fixed within the underground pipe 30, and the fixing force can be increased.

The first elastic member 424 is provided between the upper plate 423 and the base plate 422 so that the upper plate 423 is elastically deformed from the base plate 422 It can be moved in the longitudinal direction.

The first cutting bar 425 is provided inside the upper plate 423 and the second elastic body 426 is provided at one side of the first cutting bar 425 so that the first cutting bar 425 elastically moves in the lateral direction You can move it.

The lower plate 427 is provided at a lower portion of the base plate 422 and the support protrusions 4211 can be supported by support protrusions 4211 provided at one end of the lower plate 427 side of the fixing plate 421.

The second cutting bar 428 is provided inside the lower plate 427 and the third elastic body 429 is provided at one side of the second cutting bar 428 so that the second cutting bar 428 is moved in the lateral direction As shown in FIG.

Next, the principle of operation of the cutting device 420 will be described. In the following description, only different parts from the above-described embodiment will be described in detail and the same or similar parts will not be described in detail.

FIGS. 5 and 6 are enlarged views showing an emergency state of the safety device of the underground distribution line with the wire connection shown in FIG. 2. FIG.

1 to 6, the safety device 10 of the underground distribution line wire line according to an embodiment of the present invention includes a protection device 400, and the protection device 400 includes a cutting device 420 .

The cutting device 420 includes a fixing plate 421 which is brought into contact with the inner surface of the underground pipe 30 and is fixed to the underground pipe 30 by the fixing means 500 and the underground pipe 30 so as to be perpendicular to the fixing plate 421, A top plate 423 provided at an upper portion of the base plate 422 and a top plate 423 provided between the top plate 423 and the base plate 422. The top plate 423, A first cutting bar 425 provided inside the upper plate 423 and a second cutting bar 425 provided at one side of the first cutting bar 425 to move the first cutting bar 425 A lower plate 427 provided at a lower portion of the base plate 422 and a lower plate 427 provided at one end of the lower plate 427 side of the fixing plate 421. The second elastic member 426 elastically moves in the horizontal direction, A second cutting bar 428 provided inside the lower plate 427 and a second cutting bar 428 so that the second cutting bar 428 is elastically moved in the lateral direction And a third elastic body 429 for moving the first elastic body 429 to the second elastic body 429.

The upper plate 423 moves downward when the weight of water introduced from the ground is larger than the elastic force of the first elastic body 424. When the height of the upper plate 423 moving downward and the height of the first insertion groove 416 provided in the cover 410 are made to be in the same line, the first cutting bar 425 located inside the upper plate 423 The first notch 311 may be cut by inserting the first insertion groove 416 through the second elastic body 426 and applying an impact to the first notch 311 of the connecting bar 310. Accordingly, when the amount of the water introduced through the ground is small, the connector 300 is protected through the cover 410, and when the amount of water is large, the connector 300 is actively cut by the water, Can be blocked in advance.

The lower plate 427 is moved upward by the water introduced along the submerged pipe 30. When the height of the lower plate 427 moving upward and the height of the second insertion groove 417 provided in the cover 410 are made to be in the same line, the second cutting bar 428 located inside the lower plate 427 The second notch 312 may be cut by inserting the second insertion groove 417 through the third elastic body 429 and applying an impact to the second notch 312 of the connecting bar 310. Therefore, when the amount of the water flowing along the submerged pipe 30 is large, the connector 300 is actively cut by the water, so that the safety accident due to flooding can be prevented in advance.

Next, a modification of the safety device 10 of the wire connecting rod with the underground distribution line will be described. In the following description, only different parts from the above-described embodiment will be described in detail and the same or similar parts will not be described in detail.

FIG. 7 is a view showing a modification of the safety device of the underground distribution line to the wire connecting part shown in FIG. 1. FIG.

1 to 7, a safety device 10 of a wire connecting line according to an embodiment of the present invention includes an inlet wire 200 installed in an underground pipe 30 embedded in an underground 20, A lead wire 100 supplied with electric power from the electric wire 200, a connector 300 electrically connecting the lead wire 200 and the lead wire 100 in the underground pipe 30 and disposed in the underground pipe 30 (400). ≪ / RTI >

One end of the connector 300 is connected to the first conductor core 110 exposed at the end of the lead wire 100 and the other end is connected to the second conductor core 210 exposed at the end of the lead wire 200 A connecting bar 310 having a first notch 311 having a reduced sectional area and a second notch 312 positioned below the first notch 311 at an intermediate portion thereof, Out connection means 320 for connecting one end of the connection bar 310 to the first conductor core 210 and an inlet connection means 330 for connecting the other end of the connection bar 310 to the second conductor core 210. [ have.

The protection means 400 includes a first conductor core wire 110, a second conductor core wire 210 and a connector 300. The first conductor core wire 110, the second conductor core wire 210, The connection bar 310 is fixed in the underground pipe 30 and is coupled with the cover 410 to vary the degree of inflow of water flowing into the ground or underground pipe 30, And a cutting device 420 for cutting the wafer.

The cover 410 includes a first body 411 in the form of a column surrounding a first conductor core 110, a second conductor core 210 and a part of the connector 300, a first body 411, The second body 412 and the second body 412 that surround the conductor core wire 110, the second conductor core wire 210 and the remaining part of the connector 300 are formed on both bottom surfaces of the first body 411 and the second body 412, A fixing body 413 which is formed on the first body 411 and the second body 412 and includes a first body 411 and a second body 411, A packing member 415 provided between the first body 411 and the second body 412 to enhance the airtightness of the cover 410, a first body 411 or a second body 411, The first notch 311 is provided on the second body 412 and is positioned below the first insertion slot 416 and the first insertion slot 416 which are located on the same line as the first notch 311, And a second insertion groove 417 positioned in the second insertion groove 417. [

Here, the first insertion groove 416 and the second insertion groove 417 may be provided with a stopper 418, respectively. The cap 418 is normally provided in the first insertion groove 416 and the second insertion groove 417 to enhance airtightness of the cover 410. [ When the first cutting bar 425 or the second cutting bar 428 is operated, the stopper 418 is rotated by the first cutting bar 425 or the second cutting bar 428, And can be separated from the second insertion groove 417.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Those skilled in the art, who understands the spirit of the present invention, can readily suggest another embodiment by adding, changing, deleting, or adding elements within the scope of the same idea, but this is also within the spirit of the present invention something to do.

10: Safety device 20: Underground
21: ground 30: underground piping
40: Switchboard 50: Distribution box
100: Draw-out wire 110: First conductor wire
200: incoming wire 210: second conductor wire
300: connector 310: connection bar
311: first notch 312: second notch
320: outgoing connection means 330: incoming connection means
400: protection means 410: cover
411: first body 412: second body
413: fixing groove 414: engaging member
415: packing member 416: first insertion groove
417: second insertion groove 418: stopper
420: Cutting device 421: Fixing plate
4211: support protrusion 422: base plate
423: upper plate 424: first elastic body
425: first cutting bar 426: second elastic body
427: lower plate 428: second cutting bar
429: third elastic body 500: fixing means

Claims (2)

An incoming wire installed in the underground pipe embedded in the ground;
An outgoing wire supplied with power from the incoming wire;
A connector for electrically connecting the lead-in wire and the lead-out wire in the underground pipe; And
A protection means disposed in the underground pipe; / RTI >
The connector is connected at one end to a first conductor core exposed at an end of the lead wire and at the other end to a second conductor core exposed at an end of the lead wire, A connecting bar having a first notch and a second notch located below the first notch, draw-out connecting means connecting one end of the connecting bar to the first conductor core, And an inlet connection means for connecting the other end portion,
The protection means
A cover which covers the first conductor core wire, the second conductor core wire, and the connector so as to enclose the first conductor core wire, the second conductor core wire, and the external contact of the connector; And a cutting device which is coupled to the cover and cuts the connection bar according to a degree of inflow of water flowing into the ground or the underground pipe,
The cover
A first conductor core, a second conductor core, and a connector; a first body that surrounds the first conductor core, the second conductor core, and a portion of the connector; And a fixing groove formed on both bottom surfaces of the first body and the second body for fixing the lead wires and the lead wires to each other and a fixing groove formed in the first body and the second body, A packing member provided between the first body and the second body to increase the airtightness of the cover, and a sealing member provided between the first body and the second body, And a second insertion groove provided in the body and coaxially aligned with the first notch and a second insertion groove located below the first insertion groove and positioned in line with the second notch,
The cutting device
A base plate which is provided in the underground pipe and is coupled with the cover so as to be perpendicular to the base plate; and a base plate provided on the base plate, A first elastic body provided between the upper plate and the base plate to elastically move the upper plate in a longitudinal direction, a first cutting bar provided inside the upper plate, and a second cutting bar provided on one side of the first cutting bar A second elastic body for elastically moving the first cut bar in the lateral direction to insert the first cut bar into the first insertion groove and then cutting the first notch; a lower plate provided at a lower portion of the base plate; A second cutting bar provided inside the lower plate, and a second cutting bar provided on one side of the second cutting bar After the second cut the bar to elastically move in the horizontal direction is inserted into the second groove and a third elastic material so that cutting of the second notch,
Wherein the top plate moves in a downward direction when the water pressure of the water introduced from the ground is greater than the elastic force of the first elastic body and the frictional force between the top plate and the cover and the height of the top plate and the height of the first insertion groove The first cutting bar located inside the upper plate penetrates through the first insertion groove by the second elastic body to impact the first notch to cut the first notch, The connector is protected by the cover when the water introduced through the cover is low in water pressure and the connector is cut by the water pressure when the water pressure is high,
The lower plate moves upward in the upward direction when the water pressure of the water flowing along the underground pipe is greater than the frictional force between the lower plate and the cover, and the height of the lower plate and the height of the second insertion groove provided in the cover are equal to each other The second cutting bar located inside the lower plate penetrates through the second insertion groove by the third elastic body and impacts the second notch to cut the second notch so that the inflow Characterized in that said connector is cut off when water is at high pressure to prevent safety accidents due to inundation in advance.

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