KR101945248B1 - Apparatus for Stabilizing Hot Line Work of Underground Distribution lines - Google Patents

Abstract

The present invention relates to an apparatus for stabilizing a hot line work of underground distribution lines which instantaneously closes a vicinity of an input wire and forms an inner closed structure when a connector, which connects the input wire and an output wire, is damaged due to a strong vibration or an aftereffect of a shock generated by diastrophism such as an earthquake and the like, thereby preventing a short circuit of the input wire and reducing danger such as an explosion, a fire, a current leakage and the like.

Description

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a stabilizing hot line work underground distribution lines,

[0001] The present invention relates to a live wire stabilizing device for underground distribution lines in distribution technology, and more particularly, to a connector for connecting an input wire to an output wire due to a strong vibration or impact caused by a crustal change such as an earthquake The present invention relates to a live wire stabilizing device for an underground distribution line, which can prevent a short circuit of an input wire and reduce the risk of explosion, fire, short-circuit, etc. by forming an internal hermetic structure by closing an input wire instantaneously.

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

In the transmission and distribution system composed of underground distribution line using underground, a ground channel adapter is provided in the underground distribution line through which the underground distribution line is drawn, and the plug is connected to the end of the underground distribution line, and this plug is connected to the underground channel adapter.

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 installed in the underground pipe, so that the connection state of the connector connecting the lead wire and the lead wire may be damaged.

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

Especially, in case of disaster such as flood due to heavy rain, there is a problem that water may flow into the underground pipeline, resulting in electric leakage, electric shock and fire accident.

Korean Patent No. 10-1402991

In order to solve the problems and necessities of the prior art, the present invention has been made to solve the problems and necessity of the prior art, and it is an object of the present invention to provide an input / And it is an object of the present invention to provide a live wire stabilizing device for an underground distribution line which can prevent a short circuit of an input wire and reduce the risk of explosion, fire, short-circuit, etc.

In order to achieve the above object, the present invention provides an underground distribution line stabilizing apparatus (100) for an underground distribution line, comprising: an underground pipe (40) embedded in the ground; An input wire 120 installed in the underground pipe 40; An input wire 120 receiving power from the input wire 120; A connector (200) for electrically connecting the input wire (120) and the output wire (110) in the underground pipe (40); And a protective member 400 disposed in the underground pipe 40. The connector 200 is connected at one end to a conductor core 201 exposed at an end of the output wire 110, A connecting member 210 having the other end connected to the conductor wire 205 exposed at the end of the wire 120 and having a concave groove 203 having a reduced cross-sectional area formed at an intermediate portion thereof; An output connection member 202 connecting one end of the connection member 210 to the conductor core 201 of the output wire 110; And an input connection member 204 connecting the other end of the connection member 210 to the conductor core wire 220 of the input wire 120. The protection member 400 is connected to the underground pipe 40, A fixing part 410 made of a hard insulator and disposed on the upper side of the conductor core line 201 and the output connecting member 202 of the output wire 110; An insertion hole 432 inserted upward from the bottom surface is formed on the bottom surface and the conductive core wire 220 of the input wire 120 and the input connecting member 204 and the concave groove 203 are formed therein A movable part 430 having a container shape with a top opened and formed of a hard insulator and a movable part 430 formed so as to connect between the fixed part 410 and the movable part 430. When a tensile force is applied A through hole 441a through which the connecting member 210 is inserted is formed in a shape And the vertical bars 443 and 444 are extended in the downward direction at the positions where the through holes 441a are formed and the upper ends of which are formed into hooking protrusions 441 and 442, A support rib 431 extending in the longitudinal direction of the input wire 120 and closely contacting the outer circumferential surface of the sheath 210 of the input wire 120 is formed in the insertion hole 432, A joining portion 535 to which the outer circumferential surface of the input wire 120 and the inner circumferential surface of the support rib 431 are bonded or fused with each other and a connecting portion 535 connecting between the fixing portion 410 and the moving portion 430, A connecting hole 550 is formed through the connecting member 210 to seal the upper portion of the open portion of the movable member 430, A horizontal barrier rib 540 made of an insulator of the first conductivity type; And a plurality of compartments for sealing the space formed by the movable part 430 and the transverse partitions 540 by dividing the part where the live wire of the input wire 120 is disposed and the part where the neutral wire is disposed, The connection member 210 is formed with a connection body 211 at a portion of the connection member 210 which is inserted into the through hole 441a of the horizontal barrier rib 440.

The connecting body 211 is a portion not inserted into the through hole 441a and has protrusions 212 protruding in the horizontal direction on both sides thereof and a cover having a lid inverted on the lower end which is a portion passing through the through hole 441a And the cover 220 includes a receiving portion 221 extending in both directions of a lower end of the connecting body 211 and a receiving portion 221 extending from both ends of the receiving portion 221 And the vertical bars 443 and 444 of the horizontal partition wall 440 are inserted and coupled to the space between the lower end of the connection body 211 and the supports 222 and 223 .

According to the present invention having the above-described structure, in the event of disaster such as an earthquake and water entering the underground pipe due to flooding, the input wire is instantly sealed to prevent the risk of short circuit, short- There is an effect that can be.

The present invention can prevent the inflow of water completely by closing the periphery of the input wire momentarily when the connector is damaged, thereby preventing the connection failure or malfunction of the inside of the switchboard in advance and increasing the maintenance and repair cost Can be prevented.

1 is a view showing a state where a live wire work stabilizing device for an underground distribution line is installed on a lower surface of a switchboard according to an embodiment of the present invention.
2 is a cross-sectional view illustrating a detailed structure of a live wire work stabilizing device for an underground distribution line according to an embodiment of the present invention.
3 is an enlarged view of a configuration of a transverse bulkhead and a cover of a live line stabilizing device for an underground distribution line according to an embodiment of the present invention.
And
4 is a diagram for explaining an emergency operation of a live line stabilization device for an underground distribution line according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

When a large impact such as an earthquake or a gas explosion occurs in a conventional switchboard, the impact is transmitted through a lead wire provided in the underground pipe, thereby deteriorating the connection state of a connector connecting the lead wire and the lead wire.

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

The present invention relates to an input / output connector for connecting an input wire and an output wire to an input wire by instantly closing an input wire and forming an internal hermetic structure when a connector for connecting an input wire and an output wire is damaged by a strong vibration or impact caused by a crustal change, Provides a live wire stabilization device for underground distribution lines that can prevent short circuits and reduce the risk of explosion, fire, short circuit, etc.

FIG. 1 is a view showing a state in which a live wire work stabilizing device for an underground distribution line according to an embodiment of the present invention is installed on a lower surface of an electric power distribution board, FIG. 2 is a perspective view of a live wire work stabilizing device for an underground distribution line according to an embodiment of the present invention, FIG. 3 is an enlarged view of a configuration of a lateral partition wall and a cover portion of a live line stabilizing device for an underground distribution line according to an embodiment of the present invention.

The live wire work stabilizing apparatus 100 for an underground distribution line according to an embodiment of the present invention includes an underground pipe 40, an output wire 110, an input wire 120, a connector 200, and a protection member 400 .

The underground pipe 40 is installed in the ground 31 at a lower portion of the ground 30 and has a constant internal space 41 formed therein.

The input wire 120 is connected to an electric power source (not shown) and is installed in the underground pipe 40 as a line for supplying electric power.

The present invention assumes that power is supplied from the input wire 120 to the output wire 110 of the switchboard 10 installed on the ground. The distribution box (20) is a housing for protecting the switchboard (10).

The input wire 120 and the output wire 110 are electrically connected to the connector 200. The connector 200 includes an input connecting member 204, a connecting member 210, and an output connecting member 202.

The cover is removed at the end of the output wire 110 so that the exposed portion of the conductor wire 201 is formed and the exposed portion of the input wire 120 is removed so that the exposed portion of the conductor wire 205 is formed do.

One end of the connecting member 210 is connected to the conductor core wire 201 of the output wire 110 by using the output connecting member 202 and the input connecting member 204 is connected to the other end of the connecting member 210 And is connected to the conductor wire 205 of the wire 120.

The connecting member 210 electrically connects the input wire 120 and the output wire 110 to a rod made of a conductor.

A concave groove 203 is formed in the lower part of the connecting member 210 and the concave groove 203 is formed in a shape having a reduced sectional area so that tensile stress and shear stress at the portion where the concave groove 203 is formed It weakens.

The concave groove 203 enables the stress concentration to be applied when an impact due to an earthquake or the like is applied, so that the position of the connecting member 210 can be predicted when the connecting member 210 is broken.

The protective member 400 includes a fixing part 410, a variable part 420, a movable part 430, a supporting rib 431, a horizontal partition wall 440 and a vertical partition wall 450.

The fixing portion 410 is fixed to the inner wall of the underground pipe 40 by a fixing means such as an anchor 411 and the conductor core 201 and the output connecting member 202 of the output wire 110 .

The fixing portion 410 is made of a hard insulator such as hard rubber.

The anchor 411 is fixed to the wall surface of the underground pipe 40 and surrounds the surface of the anchor 411 with an insulator in order to prevent a short circuit due to penetration of moisture.

The movable part 430 is made of a hard insulator such as the fixing part 410 and has a container shape with an open upper part. An insertion hole 432 is formed in an upper direction of the input wire 120 on the bottom surface of the movable part 430. The insertion hole 432 is in close contact with the outer circumferential surface of the input wire 120, A support rib 431 extending in the direction of the support rib 431 is formed.

The conductive core wire 205 of the input wire 120 and the concave groove 203 of the input connecting member 204 and the connecting member 210 are disposed in the movable portion 430. The concave groove 203 may be formed to be close to a portion of the connecting member 210 connected to the input wire 120.

The variable portion 420 is formed to connect the fixed portion 410 and the movable portion 430, and is formed of an insulator and is formed to extend when a tensile force is applied thereto.

The variable portion 420 includes a plurality of housings 421a, 421b and 421c and is connected by connecting bars 422 and 423 between the housings 421a, 421b and 421c and the adjacent housings 421a, 421b and 421c, 421b and 421c are connected by spring members 424 between the ends of one of the connecting bars 422 and 423 and the ends of the other connecting bars 422 and 423 in the inside of the housings 421a and 421b and 421c, And 421c are filled with waterproof materials (not shown).

The variable member 420 is extended in the housing 421a, 421b and 421c by the external impact so that the end of the connecting bars 422 and 423 and the connecting bar 422 and 423 of the other connecting bar 422 and 423 The ends move to both inner ends of the housings 421a, 421b and 421c and the distance between the housings 421a, 421b and 421c and the adjacent housings 421a, 421b and 421c is flexibly variable.

The horizontal partition wall 440 has a flat plate shape and is installed to seal the opened upper portion of the movable portion 430. The horizontal partition wall 440 is formed with a through hole 441a through which the connection member 210 is inserted.

The horizontal barriers 440 are vertically erected vertically in the positions where the through holes 441a are formed and have hooking protrusions 441 and 442 formed at upper ends thereof in the form of hooks, As shown in Fig.

The connection member 210 is formed with a connection body 211 at a portion thereof inserted into the through hole 441a of the horizontal partition wall 440. [

The connecting body 211 is a portion not inserted into the through hole 441a and has protrusions 212 protruding in the horizontal direction on both sides thereof and a cover having a lid inverted on the lower end which is a portion passing through the through hole 441a (Not shown).

The cover part 220 includes a support part 221 extending in both directions of a lower end of the connection body 211 and support parts 222 and 223 vertically upwardly extended from both ends of the support part 221 And the vertical bars 443 and 444 of the horizontal partition wall 440 are inserted and coupled to the space between the lower end of the connection body 211 and the supports 222 and 223.

At the lower end portion of the connection body 211, an inclined portion 224 is formed along the circumference of the outer circumferential surface and widened from the upper portion to the lower portion.

Recesses 445 and 446 are formed on the outer surfaces of the vertical bars 443 and 444 and protrusions 222a and 223a protruding from the inner surfaces of the supports 222 and 223 are formed.

On the inner surfaces of the vertical bars 443 and 444, sealing members 447 and 448 projecting toward the connection body 211 are formed. The sealing members 447 and 448 are formed to have the opposite width to the inclined portion 224 and to have a wider width from the lower portion to the upper portion.

The vertical barrier ribs 450 form a plurality of compartments so that the space formed by the movable portion 430 and the horizontal barrier ribs 440 is divided into a portion where the live wire of the input wire 120 is disposed and a portion where the neutral wire is disposed.

The horizontal barrier ribs 440 and the vertical barrier ribs 450 are made of an insulator.

The vertical partition 450 forms an inner space in the movable part 430, and the inner space 451 functions to keep the outer space hermetic.

An O-ring member 300 surrounding the connecting body 211 is inserted into the lower portions of the latching protrusions 441 and 442 of the transverse bulkhead 440.

4 is a diagram for explaining an emergency operation of a live line stabilization device for an underground distribution line according to an embodiment of the present invention.

Referring to FIG. 4, when the external impact exceeds a predetermined strength range due to an earthquake or other cause, the concave groove 203 ruptures.

When the concave groove 203 ruptures, the load of the input wire 120 is transmitted to the movable portion 430 to which the input wire 120 is coupled. Therefore, the input wire 120, the variable portion 420, the movable portion 430, The load is transferred to the horizontal barrier ribs 440 and the vertical barrier ribs 450.

Accordingly, the movable portion 430 is moved to the lower side of the inner space 41 by the elongation of the variable portion 420.

At this time, when the concave groove 203 ruptures, an upper portion connected to the output connecting member 202 is moved upward with respect to the concave groove 203, The lower portion connected to the connecting member 204 is moved downward.

The convex portions 222a and 223a of the support portions 222 and 223 move up to the concave portions 445 and 446 of the vertical bars 443 and 444 to be engaged with each other in the convex concave manner, The sealing members 447 and 448 are brought into close contact with each other to remove the empty space. As a result, a part of the horizontal partition 440 and the cover 220 are closely contacted to each other.

When water flows into the underground pipe 40 due to floods at the same time of an earthquake or the like, water often contains a large amount of foreign matter and has conductivity. When such water contacts the input wire 120, Is likely to occur.

However, due to the strong contact structure of the part of the transverse bulkhead 440 and the cover 220, the inflow of water can be completely blocked, and the risk of short-circuiting or leakage can be significantly reduced.

The embodiments of the present invention described above are not implemented only by the apparatus and / or method, but may be implemented through a program for realizing functions corresponding to the configuration of the embodiment of the present invention, a recording medium on which the program is recorded And such an embodiment can be easily implemented by those skilled in the art from the description of the embodiments described above.

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, It belongs to the scope of right.

40: underground piping 100: live stabilization device for underground distribution line
110: output wire 120: input wire
200: connector 211: connection body
220: cover part 221:
222, 223: Support portion 224:
300: O-ring member 400: Protective member
410: fixing part 420: variable part
430: moving part 440:
441, 442: latching jaws 443, 444: vertical bars
447, 448 sealing member 450: vertical partition wall

Claims (1)

An underground pipeline (40) embedded in the ground;
An input wire (120) installed in the underground pipe (40) and connected to a power source to supply electric power;
An output wire (110) receiving power from the input wire (120);
A connector (200) for electrically connecting the input wire (120) and the output wire (110) in the underground pipe (40); And
And a protection member (400) disposed in the underground pipe (40)
The connector (200)
A connection body 211 having one end connected to the conductor core 201 exposed at the end of the output wire 110 and the other end connected to the conductor wire 205 exposed at the end of the input wire 120, The lower end portion of the connecting body 211 has a reduced cross-sectional area, a tensile stress and a shear stress are formed weakly in comparison with other portions, a stress concentration is applied when an impact caused by an earthquake is applied, A connecting member 210 having a connecting portion 203;
An output connection member 202 connecting one end of the connection member 210 to the conductor core 201 of the output wire 110; And
And an input connecting member 204 connecting the other end of the connecting member 210 to the conductor core 220 of the input wire 120,
In the protective member 400,
A fixing portion 410 fixed to the inner wall of the underground pipe 40 and disposed on the upper side of the conductor core 201 and the output connecting member 202 of the output wire 110, ,
An insertion hole 432 in which the input wire 120 is inserted upward from the bottom surface is formed on the bottom surface and the conductive core 220 of the input wire 120 and the input connection member 204 and the concave groove 203 ), A movable portion 430 made of a hard insulator and having a container shape opened on the upper side,
A variable portion 420 formed to connect between the fixing portion 410 and the movable portion 430 and formed to extend when a tensile force is applied thereto,
A through hole 441a through which the connecting member 210 is inserted is formed and hooking protrusions 441 and 442 are vertically formed in the upper direction at the position where the through hole 441a is formed and the upper end is formed into a hook shape, A horizontal barriers 440 formed by extending the vertical bars 443 and 444 in the downward direction,
The insertion hole 432 is formed with a support rib 431 which is in contact with the outer circumferential surface of the sheath 210 of the input wire 120 and extends in the longitudinal direction of the input wire 120, A connecting portion 535 to which the inner circumferential surface of the supporting rib 431 is adhered or welded and a connecting portion 535 connecting between the fixing portion 410 and the moving portion 430 and having an elasticity, A horizontal partition wall 440 formed of a hard insulator and sealing the open upper side of the movable part 430; And
The space formed by the movable portion 430 and the horizontal partition 440 is divided into a plurality of compartments for sealing the portion where the live wire of the input wire 120 is disposed and the portion where the neutral wire is disposed, Includes a barrier 450,
The variable portion 420 includes a plurality of housings 421a, 421b and 421c and is connected by connecting bars 422 and 423 between the housings 421a, 421b and 421c and the adjacent housings 421a, 421b and 421c And is connected by spring members 424 between the ends of one connecting bars 422 and 423 and the ends of the other connecting bars 422 and 423 inside the housings 421a and 421b and 421c, 421b, and 421c are filled with waterproof materials,
The spring member 424 is extended inside the housings 421a, 421b and 421c by an external impact so that the ends of the connecting bars 422 and 423 and the connecting bar 422 422 and 423 move to both inner ends of the housings 421a, 421b and 421c so that the distance between the housings 421a, 421b and 421c and the adjacent housings 421a, 421b and 421c is elastically variable,
The connection member 210 has the connection body 211 formed at a portion thereof inserted into the through hole 441a of the horizontal barrier rib 440,
The connection body 211 is a portion not inserted into the through hole 441a and includes protrusions 212 protruding in the horizontal direction on both sides thereof and a protrusion 212 protruding from the lower end of the through hole 441a And a cover part 220. The cover part 220 includes a support part 221 extending in both directions of a lower end of the connection body 211 and a support part 221 extending from both ends of the support part 221 The vertical bars 443 and 444 of the horizontal partition wall 440 are inserted into the space between the lower end of the connection body 211 and the supports 222 and 223, And,
A slope portion 224 is formed at a lower end portion of the connection body 211 so as to be wider from the upper portion to the lower portion along the circumference of the outer circumferential surface of the connection body 211. A recess 445 is formed on the outer surface of each of the vertical bars 443, And convex portions 222a and 223a protruding from the inner surfaces of the support portions 222 and 223 are formed,
The sealing members 447 and 448 protrude toward the connection body 211 on the inner side surfaces of the vertical bars 443 and 444 and the sealing members 447 and 448 protrude from the inclined portion 224 The width is made wider from the lower part to the upper part in the opposite shape,
When the concave groove 203 ruptures, the upper portion of the connection body 211 connected to the output connection member 202 is moved upward with respect to the concave groove 203, and the concave groove 203 The lower portion connected to the input connection member 204 is moved downward,
The convex portions 222a and 223a of the support portions 222 and 223 move up to the concave portions 445 and 446 of the vertical bars 443 and 444 to be engaged with each other in the convex concave manner, (224) is in close contact with the sealing members (447, 448) to remove an empty space so that a part of the horizontal partition (440) and the cover part (220) are tightly contacted with each other to seal the underground distribution line Work stabilizer.

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