KR101709324B1 - Insulation type connector for extra high voltage power incoming cable in substation - Google Patents

Abstract

The present invention provides an insulation type connector for an extra high voltage power incoming cable of a substation, capable of preventing a power distributor from being submerged under water when the ground is filled with the water due to flood. According to the present invention, the insulation type connector comprises: a buoyant body (20) supported by multiple guide rods (6) to be able to lift/lower and filling the inside with air for buoyancy, wherein the guide rods (6) are installed in the upper part of a concrete base part (3) constructed on the ground with a predetermined thickness to include one or more waterways which are opened upwards to connect an underground cable to the power distributor on the ground; a support plate (40) covering the upper surface of the buoyant body (20) as a cover shape opened towards a lower part and having, on an upper surface, a space part in which the power distributor is installed; an air charging means (30) including an air sensor (31) to detect the pressure of the air inside the buoyant body, an air pump (32) to charge the air inside the buoyant body, and a controller controlling operation of the air pump when a detection value of the air sensor is smaller than a reference value, so as to maintain the inside of the buoyant body at a constant pressure; a connection line (10) wound in a coil shape to connect the underground cable and a hub (50) of a power distributor side while being contracted when the buoyant body is lifted; a protection pipe (50) to connect and protect the underground cable (1) and the power distributor (2); a connection fixation part (70) connecting the protection pipe (50) to be able to open/close in order to replace the connection line (10); and a detachable waterproofing part (80) to detachably connect the support plate (40) to the guide rod (6), and to prevent moisture from entering a gap between the guide rod (6) and the support plate (40).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an insulated type connector for an extra high voltage incoming wire of a substation,

The present invention relates to an insulation type connector for an extra high voltage input wire of a substation, and more particularly, to an insulation type connector for a substation, in which, when water is flooded due to flooding or the like, the distributor is prevented from being immersed in water, The present invention relates to an insulated connector for an extra high voltage input wire of a substation which can be used for a high voltage input wire.

Generally, electricity used in each home, office and large-scale factory is supplied through a substation equipped for each region. This substation is installed for the purpose of modifying voltage and current and distributing power, The power generated by the power line will be sent to the customer through the transmission line.

The substation is installed on the ground. In such a substation, the high-voltage electric current must be transferred. Most of the high-voltage electric wires are exposed to the outside. The high-voltage electric wire exposed to the outside causes short-circuit and short- It is easy, and there is a problem such as hurting the surrounding scenery due to the erratically installed high-voltage electric wire, so that the high voltage electric wire is installed in the ground.

There are two major types of buried high voltage cables in the ground. One is a tunnel of concrete material embedded in the ground and a shelf inside the tunnel so that underground distribution lines can be installed. Another method is to place a protective pipe made of concrete material or synthetic resin in the ground and to store the underground distribution line inside the buried protective pipe.

In both methods, a space separated from external contact is installed in the ground, and a ground distribution line is installed in this space.

The background art of the present invention is disclosed in Korean Patent Registration No. 10-0857213 (published on Sep. 01, 2008, entitled " Distribution Connector for Underground Cable Connection to Distribution Line).

Since the connector according to the prior art is connected without the separate waterproofing device or the drainage device of the cable extending from the ground and the cable on the ground, it is possible to suddenly enter the stormwater when a heavy rain or flood occurs, There is a problem that the inflow of water due to breakage may occur unevenly.

In addition, since the connector according to the related art does not have a separate drainage device, the drainage of water introduced by the environment separated from the external contact is not smoothly performed, so that the underground distribution line can be brought into contact with water, There is a problem that an electric shock accident may occur due to being immersed in water.

Further, in the connector according to the prior art, it is difficult to install the connector when the waterproofing device and the drainage device are installed, so that it is difficult to reduce the time and cost required for the connector installation and the replacement of the connecting device There is a problem that it is difficult to reduce the time and cost required for the replacement work because the connector is released and installed in a complicated manner.

Therefore, there is a need for improvement.

The present invention provides an insulation type connector for an extra high voltage incoming wire of a substation which can prevent a distributor from being immersed in water when water is flooded due to flooding or the like and can easily perform installation work and replacement work of a connector .

The present invention relates to a large number of guide rods (6) mounted on an upper portion of a concrete foundation part (3) constructed with a certain thickness on the ground so as to have at least one waterway opened upward to connect an underground wire to a ground distributor A buoyant body 20 supported so as to be able to be lifted and lowered and filled with air for buoyancy therein; A support plate (40) which covers the upper surface of the buoyant body and forms a space portion on the upper surface of the buoyant body, the space being opened toward the bottom; An air pump (32) for filling the air inside the buoyant body; and an air pump (32) for detecting the air pressure inside the buoyant body when the detected value by the air sensor is smaller than a reference value, An air filling means (30) comprising a controller (33) for controlling driving to maintain the inside of the buoyant body at a constant pressure; A connection line (10) wound in a coil shape to connect the underground cable to the hub (5) on the distributor side when the buoyant body is lifted and lowered; A protective pipe (50) for connecting and protecting the underground cable (1) and the distributor (2); A connection fixture 70 for opening and closing the protective pipe 50 so that the connection line 10 can be replaced; And a detachable waterproofing part (80) detachably connecting the supporting plate (40) to the guide rod (6) and preventing moisture from flowing into the space between the guide rod (6) and the supporting plate .

Also, the protection pipe of the present invention may include: a first protection pipe (51) coupled to a wiring hole formed in the concrete base portion and having the ground wire penetrated through the insulation pipe; A second protective pipe (52) fixed to a hub on the distributor side; And a corrugated pipe (53) interposed between the first and second protective pipes and stretched and contracted when the buoyant body is lifted and lowered. The first protective pipe (51) includes a lower protective pipe ); And an upper protection pipe (51e) detachably connected to the lower protection pipe (51f) by the connection fixing part (70).

In addition, the connection fixing portion 70 of the present invention includes a fixing protrusion 72 having a bent portion 72a extending from the upper protective pipe 51e and bent laterally; A sliding groove portion 74 formed in the lower protective pipe 51f so that the fixing protrusion 72 is inserted and movable in the lateral direction and has a curved space portion 74a; A locking protrusion 76 inserted into the locking groove portion 72b formed in the bent portion 72a and installed to protrude / retract toward the bending space portion 74a so as to confine the fixing protrusion 72; A first elastic member 77 for providing an elastic force for pressing the locking projection 76 toward the curved space 74a; A release wire 78 extending outwardly of the lower protection pipe 51f from the engagement protrusion 76; And a lever member 79 connected to the release wire 78 and disposed on an outer wall of the lower protective pipe 51f.

In the insulated connector for a special high-voltage lead-in wire of a substation according to the present invention, when water is flooded due to flood or the like on the ground where a distributor is installed, the distributor floats on the water due to buoyancy of the buoyant body, There is an advantage that a short circuit and an electric shock accident can be prevented in advance because it can not penetrate into the connection part.

In addition, since the protective pipe is detachably connected, the insulated connector for a special high-voltage lead-in wire of a substation according to the present invention can easily remove the protective pipe and replace the connection line when the connection line is broken. There is an advantage of saving time and money.

Further, in the insulation type connector for an extra high-voltage lead-in wire of a substation according to the present invention, since the case and the buoyant member constituting the support plate are easily connected to or detached from the guide rod to form a closed space, the connector can be installed more easily, There is an advantage that the time and cost required for replacement work can be more effectively reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view illustrating an insulated connector for an extra high voltage input wire of a substation according to an embodiment of the present invention; FIG.
2 is a cross-sectional view illustrating a connection line mounting structure of an insulation type connector for an extra high voltage input wire of a substation according to an embodiment of the present invention.
3 is an operational state diagram illustrating an insulated connector for an extra high voltage incoming wire of a substation according to an embodiment of the present invention.
4 is a cross-sectional view illustrating a protective pipe mounting structure of an insulated connector for an extra high voltage incoming wire of a substation according to an embodiment of the present invention.
5 is an exploded perspective view illustrating a case mounting structure of an insulation type connector for an extra high voltage input wire of a substation according to an embodiment of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of an insulation type connector for an extra high voltage input wire of a substation according to the present invention will be described with reference to the accompanying drawings.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator.

Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a cross-sectional view illustrating an insulation type connector for an extra high voltage input wire of a substation according to an embodiment of the present invention. FIG. 2 is a cross- Fig. 3 is an operational state diagram showing an insulated connector for an extra high voltage incoming wire of a substation according to an embodiment of the present invention.

4 is a cross-sectional view illustrating a protection tube mounting structure of an insulation type connector for an extra high voltage input lead wire of a substation according to an exemplary embodiment of the present invention, FIG. 5 is a cross-sectional view of a high voltage input lead wire of a substation according to an exemplary embodiment of the present invention, Fig. 2 is an exploded perspective view showing a case mounting structure of an insulated connector for use with the present invention.

1 to 5, an insulated connector for an extra high voltage input wire of a substation according to an embodiment of the present invention connects a ground wire 1 to a ground distributor 2, The concrete base portion 3 is constructed on the ground and the distributor 2 is provided on the concrete foundation 3 so as to prevent water from being accumulated on the joint portion between the distributor 2 and the distributor 2 and the underground wire 1 when the ground is filled with water. (3). The ground wire 1 is wired to the distributor 2 along the wiring hole 4 in the ground and the end is connected to the hub 5 of the distributor 2. The concrete foundation 3 is formed with one or more water passages 3a filled with water so that the buoyant body 20 to be described later can be quickly lifted.

First, in the present invention, the ground wire 1 and the hub 5 of the distributor 2 are connected to each other by a connecting line 10 when the distributor 2 floats in water. That is, the connecting line 10 is wound in the form of a coil so that the length thereof can be expanded and contracted. Both sides of the connecting line 10 are fixed to the underground cable 1 and the hub 5 of the power distributor. When the power distributor 2 is lifted, ) And the distributor (2).

In the present invention, the distributor (2) is installed on the concrete base (3) through the buoyant body (20). The buoyant body 20 is a tube filled with air, which is a buoyancy material, and is mounted on a plurality of guide rods 6 mounted on the concrete base 3 so as to be able to ascend and descend.

The air filling means 30 is applied so that the inside of the buoyant body 20 can be maintained at a constant pressure.

The air filling means 30 includes an air sensor 31 for detecting air pressure in the buoyant body 20, an air pump 32 for filling air in the buoyant body 20, And a controller 33 for controlling the operation of the air pump 32 to maintain the inside of the buoyant body 20 at a constant pressure when the value is smaller than the reference value.

A support plate (40) for stably supporting the distributor (2) is formed on the upper surface of the buoyant body (20).

Preferably, the support plate 40 is in the form of a lid that supports the distributor 2, protects the buoyant body 20 and opens toward the bottom.

An enclosure for covering and protecting the distributor 2 is coupled to the upper portion of the support plate 40. The enclosure may be in the form of a box opened toward the bottom, and the support plate 40 and the enclosure may be integrally formed.

The present invention constitutes a protective pipe (50) for protecting the connection between the underground wire (1) and the distributor (2).

The protection pipe 50 is connected to the wiring hole formed in the concrete base portion 3 and includes a first protection pipe 51 in which the underground wire 1 is wired through and a second protection pipe 52 and a corrugated pipe 53 interposed between the first and second protective pipes 51, 52 and stretched and contracted when the buoyant body 20 is moved up and down.

The first protection pipe 51 is fixed to the concrete foundation 3 through an anchor or the like and is watertightly fixed to the buoyant body 20 while the second protection pipe 52 is fixed to the hub 5 via a clamp or the like And the corrugated pipe 53 are fixed through an adhesive or the like in a water-tight manner so that water can not penetrate through the spaces between the first and second protective pipes 51 and 52.

1 is a state in which the buoyant body 20 is not lifted, and Fig. 3 is a state in which the buoyant body 20 is lifted up on the water to be.

3, when the water flows around the distributor 2 due to flooding or the like in the state of FIG. 1, the buoyant body 20 floats on the water by the buoyancy force. At this time, The ground wire 2 and the distributor hub 5 are fixed at this time. However, since the connecting wire 10 is expanded and contracted, the distributor 2 2, the ground wire 1 and the distributor 2 are maintained in a connected state.

At this time, the corrugated pipe 53 also extends and protects the connection between the underground wire 1 and the distributor-side hub 5.

When the water level is lowered, the buoyant body 20 is lowered under the guidance of the guide rod 5, and the connecting wire 10 and the bellows pipe 53 are wound or folded so that the underground wire 1 and the distributor 2 are connected State.

The first protection pipe 51 is formed in a watertight manner so that water can not penetrate into the ground through the wiring hole of the concrete foundation 3. The first protection pipe 51 is made of a tubular body 51a, First and second wings 51b and 51c formed on the upper and lower surfaces of the concrete foundation 3 respectively and formed at the periphery of the concrete foundation 3 and an injection hole 51d formed in the first wing 51b.

The first wing 51b may be detachable for fitting the first protective pipe 51 and may be fitted to the body 51a and then fixed by a mortar 54 or fixed by a fastener.

The injection hole 51d may be in the form of a hole, or may be in the form of a connected porous injection pipe capable of injecting a mortar.

The first protective pipe 51 is fixed only to the concrete base 3 and is not fixed to the buoyant body 20 and thus also serves as a guide rod for guiding the buoyant body 20 to ascend and descend.

The first protection pipe 51 is installed by the mortar 54 filled between the first and second blades 51b and 51c and the discharge port of the concrete base 3 through the injection hole 51d, Water can not penetrate into the ground through the wiring hole of the base part (3).

The first protective pipe 51 of the present embodiment includes a lower protective pipe 51f fixed to the base portion 3 and an upper protective pipe 51a detachably connected to the lower protective pipe 51f by the connection fixing portion 70 The worker operates the connection fixing part 70 to separate the upper protective pipe 51e from the lower protective pipe 51f to remove the protective pipe 50 from the lower protective pipe 51f, And the connection line 10 can be replaced.

The connection fixing portion 70 includes a fixing protrusion 72 having a bending portion 72a extending from the upper protective pipe 51e and bent in the lateral direction and a fixing protrusion 72b A sliding groove portion 74 formed in the protective pipe 51f and having a curved space portion 74a and a locking groove portion 72b formed in the curved portion 72a to fix the fixing protrusion 72, A first elastic member 77 that provides an elastic force to urge the locking projection 76 toward the curved space 74a and a second elastic member 77 which extends from the locking projection 76 to the lower A release wire 78 extending outwardly of the protection pipe 51f and a lever member 79 connected to the release wire 78 and disposed on the outer wall of the lower protection pipe 51f.

Therefore, when the operator pulls the lever member 79, the first elastic member 77 is compressed by the tension of the release wire 78, and the locking protrusion 76 is lifted and separated from the locking groove portion, so that the locking protrusion is released .

The worker can separate the upper protective pipe 51e from the lower protective pipe 51f while rotating the upper protective pipe 51e after rotating the upper protective pipe 51e, It is possible to replace the connection line 10 exposed at the interval between the lower protection pipe 51f and the lower protection pipe 51f.

The attachment and detachment waterproofing portion 80 is provided on the support plate 6 so that the guide rod 6 can be inserted into and removed from the support plate 6. In this embodiment, An opening / closing panel 83 formed on the upper surface of the support plate 40 and having one side detachably detachably attached to the upper surface of the support plate 40, 83 formed integrally on the bottom surface of the first insertion protrusion 83a and integrally formed on the bottom surface of the opening and closing panel 83. The first insertion protruding portion 83a extends from the first insertion protruding portion 83 and is inserted into the passage groove portion 82, A second insertion protrusion 83b integrally formed on the bottom surface of the first insertion protrusion 83a and extending from the second insertion protrusion 83a in the same shape as the first insertion protrusion 83a from the other side of the support plate 40, And a second insertion protrusion 83a inserted into the lock hole portion 84 and configured to support the first insertion protrusion 83a, And imposed insertion guide (86), and a fixing protrusion 88 to maintain the insert status of the retention arm (86).

A curved fixing portion 86a is formed at an end of the fixing table 86 and a curved fixing portion 86a is formed at the end of the fixing table 86. An arcuate working groove 87 is formed in the outer wall of the supporting plate 40 so that the curved fixing portion 86a is rotatably inserted. And the operating recess 87 is provided with a securing projection 88 having a constriction bending portion 88a projected and retracted by the second elastic member 88b.

The first insertion projection 83a and the second insertion projection 83b are formed with a curved surface portion 83c recessed inwardly so that the guide rod 6 is disposed at the inner end of the passage groove portion 82 The first insertion protrusion 83a and the second insertion protrusion 83b are formed in the through hole of the support plate 40 when the support plate 40 is placed on the base 3 and then the open / close panel 83 is placed on the open side of the support plate 40. [ (82).

The support plate 40 is slidable in the vertical direction by the plurality of guide rods 6 because the hole portion through which the guide rod 6 passes is formed at the inner end of the passage groove portion 82 by the curved surface portion 83c Is installed in the base portion (3).

The first insertion protrusion 83a and the support plate 40 are restrained in close contact with each other when the fixing plate 86 is inserted along the lock hole portion 84 from the other end of the support plate 40, It is possible to prevent installation and inflow of moisture.

After the fixing base 86 is inserted into the locking hole 84, the bending fixing portion 86a is rotated along the inner wall of the operating bending portion 87 so that the fixing bending portion 88a of the fixing bending portion 88 contacts the bending fixing portion 86a. So that the fixing table 86 is restrained.

The second elastic member 88b is compressed by pulling the fixing projection 88 in the outward direction of the operating groove 84 while holding the fixing rod 86 to separate the fixing rod 86. When the fixing bend portion 88a and the curved fixing portion 88 are compressed, The engagement of the fastening base 86a is released and the fastening base 86 can be separated from the support plate 40.

This makes it possible to provide an insulation type connector for an extra high voltage input wire of a substation which can prevent the distributor from being immersed in water when the ground surface is filled with water due to flooding or the like and can easily perform installation work and replacement work of the connector .

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 embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

Further, although the insulated connector for the extra high voltage incoming wire of the substation is described as an example, the present invention is merely an example, and the connector of the present invention can be used for other products other than the insulated type connector for the extra high voltage incoming wire of the substation.

Accordingly, the true scope of the present invention should be determined by the following claims.

1: underground wire 2: distributor
5: Hub 10: Connector
20: Buoyant body 30: Air filling means
40: support plate 50: protective tube
51: first protection pipe 52: second protection pipe
53: corrugated pipe 70:
80: Attachment /

Claims (3)

A plurality of guide rods 6 mounted on an upper portion of a concrete base portion 3 constructed to have a predetermined thickness on the ground so as to have at least one water channel opened upward to connect an underground cable to a ground distributor A buoyant body (20) which is supported and filled with air for buoyancy therein;
A support plate (40) which covers the upper surface of the buoyant body and forms a space portion on the upper surface of the buoyant body, the space being opened toward the bottom;
An air pump (32) for filling the air inside the buoyant body; and an air pump (32) for detecting the air pressure inside the buoyant body when the detected value by the air sensor is smaller than a reference value, An air filling means (30) comprising a controller (33) for controlling driving to maintain the inside of the buoyant body at a constant pressure;
A connection line (10) wound in a coil shape to connect the underground cable to the hub (5) on the distributor side when the buoyant body is lifted and lowered;
A protective pipe (50) for connecting and protecting the underground cable (1) and the distributor (2);
A connection fixture 70 for opening and closing the protective pipe 50 so that the connection line 10 can be replaced; And
A detachable waterproofing portion 80 for detachably connecting the support plate 40 to the guide rod 6 and preventing moisture from flowing into the gap between the guide rod 6 and the support plate 40 and,
The protective pipe
A first protection pipe (51) coupled to the wiring hole formed in the concrete base portion and having the ground wire penetrated through the inside thereof;
A second protective pipe (52) fixed to a hub on the distributor side; And
(53) interposed between the first and second protective pipes and stretchable and contractible when the buoyant body is lifted and lowered,
The first protective pipe (51)
A lower protective pipe (51f) fixed to the base (3); And
And an upper protective pipe (51e) detachably connected to the lower protective pipe (51f) by the connection fixing part (70)
The connection fixing portion (70)
A fixing protrusion (72) having a bent portion (72a) extending from the upper protective pipe (51e) and bent laterally;
A sliding groove portion 74 formed in the lower protective pipe 51f so that the fixing protrusion 72 is inserted and movable in the lateral direction and has a curved space portion 74a;
A locking protrusion 76 inserted into the locking groove portion 72b formed in the bent portion 72a and installed to protrude / retract toward the bending space portion 74a so as to confine the fixing protrusion 72;
A first elastic member 77 for providing an elastic force for pressing the locking projection 76 toward the curved space 74a;
A release wire 78 extending outwardly of the lower protection pipe 51f from the engagement protrusion 76; And
And a lever member (79) connected to the release wire (78) and disposed on an outer wall of the lower protective pipe (51f). delete delete

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