KR101683769B1 - Distributing board of underground electric power distribution line - Google Patents

Distributing board of underground electric power distribution line Download PDF

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Publication number
KR101683769B1
KR101683769B1 KR1020160008754A KR20160008754A KR101683769B1 KR 101683769 B1 KR101683769 B1 KR 101683769B1 KR 1020160008754 A KR1020160008754 A KR 1020160008754A KR 20160008754 A KR20160008754 A KR 20160008754A KR 101683769 B1 KR101683769 B1 KR 101683769B1
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South Korea
Prior art keywords
connector
manhole
distribution
solenoid
fire
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KR1020160008754A
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Korean (ko)
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이임기
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(주)우진이엔지
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Priority to KR1020160008754A priority Critical patent/KR101683769B1/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G9/00—Installations of electric cables or lines in or on the ground or water
    • H02G9/10—Installations of electric cables or lines in or on the ground or water in cable chambers, e.g. in manhole or in handhole
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/14—Fire prevention, containment or extinguishing specially adapted for particular objects or places in connection with doors, windows, ventilators, partitions, or shutters, e.g. automatic closing

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection factor switchboard structure for underground distribution lines, comprising: an underground distribution tunnel; A manhole connected to one end of the ground distribution tunnel; A power distribution facility installed on the ground above the manhole, an underground distribution line is wired in the underground distribution tunnel, and an output line of the distribution facility in which the distribution device is accommodated in the distribution facility box is connected to a sub- Connection factor of underground distribution line connected to underground distribution line. - Connector operating means for separating underground distribution line and output line in case of fire in switchboard structure, shutter device for blocking manhole and underground distribution tunnel, and connector for interlocking connector and shutter. - Shutter It is equipped with interlocking means to prevent the fire from spreading to the underground distribution tunnel by blocking the underground distribution tunnel from the manhole when a fire occurs at the side of the manhole or power distribution facility and minimizes the damage caused by the fire. Fire extinguisher is injected into the manhole and the distribution facility where the fire occurred. By evolution to be one in order to minimize the damage caused by the fire.

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a distribution board for an underground electric power distribution line,

More particularly, the present invention relates to a structure of a switchboard for connection of underground distribution lines among technologies of underground distribution, more specifically, a fire shutter is provided between a underground distribution tunnel and a manhole, and when a fire occurs in a manhole or a distribution facility, It is possible to minimize the damage caused by the fire by preventing the tunnel from spreading to the underground distribution tunnel by blocking the tunnel from the manhole, and it is possible to minimize the damage caused by the fire by injecting the fire extinguishing agent into the manhole and the distribution facility where the fire occurs. To the structure of the connecting panel of the underground distribution line.

Generally, underground distribution lines are constructed by installing underground distribution lines, laying underground distribution lines, installing manholes at one or both ends of underground distribution tunnels, installing distribution facilities such as ground-type transformers or ground- have.

In this underground distribution line, because the underground distribution tunnel and the manhole are simply communicated, when the fire occurs in the manhole and the distribution facility box due to the overvoltage and other reasons generated during the distribution process, the fire spreads to the inside of the underground distribution tunnel, Which is damaged by a fire, and damages the facilities by underground distribution lines to such an extent that maintenance can not be done, resulting in a great economic damage.

Therefore, when a fire occurs in a manhole or a power distribution box, it is detected and when a fire occurs in a manhole or a power distribution box side, the underground distribution tunnel is blocked from the manhole to prevent the fire from spreading to the underground distribution tunnel, And the development of a technology that minimizes the damage caused by the fire by injecting the fire extinguishing agent into the manhole and the distribution facility where the fire occurred is evolved by itself.

As a prior art related to this, Korea registered patent No. 10-1231215 (registered on 2013.02.01) "Insulated switchgear for underground burial" and Korea registered patent No. 10-1483492 (Registered on January 12, 2015) Type switchboard "

Korea Registered Patent No. 10-1231215 (Registered on Mar. 2, 2013) "Insulated Switchboard for Underground Embedding" Korea Registered Patent No. 10-1483492 (Registered on January 12, 2015) "Insulated Switchgear for Landfill"

Accordingly, it is an object of the present invention to provide a fireproof shutter between a ground distribution tunnel and a manhole to prevent fire from spreading to underground distribution tunnels by blocking a underground distribution tunnel from a manhole when a fire occurs in a manhole or a power distribution box side, And to minimize the damage caused by the fire by injecting the fire extinguishing agent into the manhole and the distribution facility where the fire occurred, and to provide the structure of the connection factor switchboard of the underground power distribution line.

According to an aspect of the present invention, there is provided an underground distribution tunnel, A manhole connected to one end of the ground distribution tunnel; A power distribution facility installed on the ground above the manhole, an underground distribution line is wired in the underground distribution tunnel, and an output line of the distribution facility in which the distribution device is accommodated in the distribution facility box is connected to a sub- Wherein the underground distribution line is supported by a wire support which is fixedly installed at the bottom of the underground distribution tunnel, and the underground distribution line and the output line are connected to the underground distribution tunnel and the ground distribution line, It is located inside the underground distribution tunnel when the underground distribution line and the output line are connected. When the underground distribution line and the output line are separated, it can be connected and separated by the connector located inside the manhole. The connector includes a connector body, and a connector protruding from a front side of the connector body And a connecting conductor having a protruding portion, an output wire fixed connection portion buried in the connector main body and the protruding portion, embedded in the connector body and the protruding portion and fixedly connected with the output wire, and a ground distribution line connecting portion, And the connector operating means includes a linear actuator installed in the manhole, and a linear actuator which is operated in the forward and backward directions by the linear actuator and is connected to the connector body at the front end thereof And a shutter device disposed between the underground distribution tunnel and the manhole for blocking a tunnel between the underground distribution tunnel and the manhole when a fire occurs and the shutter device is installed at a boundary between the underground distribution tunnel and the manhole, A pair of left and right pairs of vertically installed right and left side walls of the manhole And a shutter plate provided so as to be able to move up and down along the pair of right and left guide rails, wherein the connector-shutter interlocking means is interlocked with the connector separating operation of the connector actuating means so that the shutter- Wherein the connector-shutter interlocking means comprises: an interlocking arm coupled to an intermediate portion of the operating rod; a pair of right and left interlocking wire ropes having one end fixed to both ends of the interlocking arm and the other end coupled to the surface plate; A first guide roller for reversing the interlocking wire rope at a position adjacent to the interlocking arm; and a second guide roller positioned at a lower front side of the guide roller and inverting the interlocking wire rope upwardly, The other ends of the pair of right and left interlocking wire ropes are formed opposite to each other so that the half of the interlocking wire rope wrapping the first half and the second half of the outer circumference of the interlocking wire rope And the connector-shutter interlocking means is fixed to the shutter plate by fastening a fixing bolt passing through the pair of fixing pieces to the rear surface of the shutter plate with a pair of front and rear fixing pieces having grooves, And a stopper coupled to a distal end portion of the operating rod of the solenoid and having a stopper piece attached to a lower surface of the stationary piece, wherein the stopper body is installed inside the manhole, And a solenoid valve provided in the discharge pipe, a discharge pipe connected to the main body of the fire extinguisher, and a solenoid valve installed in the discharge pipe. And a control unit for controlling the connector operating means, the stopper and the manhole extinguisher and the distributing fire extinguisher The control unit includes a manhole fire detector installed inside the manhole, a distribution facility box fire detector installed inside the distribution facility box, a manhole fire detector and a distribution facility box fire detector A linear actuator connecting operation direction control command for causing the linear actuator constituting the connector actuating means to advance forward in the connector connecting direction when a fire is not detected by the solenoid stop operation for allowing the solenoid constituting the stopper to move forward in the stopping direction Outputting a control command and a solenoid valve closing operation control command for causing the solenoid valve constituting the manhole extinguisher and the power distribution unit fire extinguisher to close and to operate the connector when a fire is detected by the manhole fire detector and the distribution facility box fire detector The linear actuator constituting the means A solenoid deactivation operation control command for causing the solenoid constituting the stopper to retract in the stop releasing direction, a solenoid deactivation operation control command for causing the solenoid constituting the stopper to be retracted in the detaching direction of the solenoid valve and the solenoid valve A linear actuator driving unit for driving the linear actuator to operate in a connecting direction or a separating direction in accordance with a linear actuator control command of the control unit, and a control unit for controlling the solenoid control command And a solenoid driving unit for driving the solenoid to operate in a stopping direction or an unmating direction according to the solenoid control command from the control unit, To provide a connecting structure of the switchboard factor in underground distribution line according to claim.

According to the connection factor switchboard structure of the present invention, the underground power distribution tunnel includes: an underground distribution tunnel; A manhole connected to one end of the ground distribution tunnel; A power distribution facility installed on the ground above the manhole, an underground distribution line is wired in the underground distribution tunnel, and an output line of the distribution facility in which the distribution device is accommodated in the distribution facility box is connected to a sub- Connection factor of underground distribution line connected to underground distribution line. - Connector operating means for separating underground distribution line and output line in case of fire in switchboard structure, shutter device for blocking manhole and underground distribution tunnel, and connector for interlocking connector and shutter. - Shutter It is equipped with interlocking means to prevent the fire from spreading to the underground distribution tunnel by blocking the underground distribution tunnel from the manhole when a fire occurs at the side of the manhole or power distribution facility and minimizes the damage caused by the fire. Fire extinguisher is injected into the manhole and the distribution facility where the fire occurred. By evolution to be able to minimize the damage caused by the fire.

1 to 10 show a preferred embodiment of a connection factor distribution board structure for an underground distribution line according to the present invention,
1 is a perspective view showing an example of an underground distribution line to which the present invention is applied,
FIG. 2 is a perspective view showing a state in which a ground distribution tunnel and a manhole are partially cut,
3 and 4 are perspective views showing a state in which a ground distribution tunnel and a manhole are removed,
5 is an exploded perspective view showing a wire support, a connector and an underground distribution line and an output wire,
6 and 7 are exploded perspective views showing the connector operating means, the shutter device, and the connector-shutter interlocking means,
8 is a side view showing a state in which the connector is connected and the shutter is opened;
9 is a side view showing a state in which the connector is detached and the shutter is blocked,
10 is a functional block diagram showing control means.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

In the following description, the bolt through-holes and the bolt fastening holes through which the bolts are inserted or fastened for simple combination of the components are shown in the drawings, and reference numerals and detailed explanations thereof are omitted.

In addition, the directions toward the underground distribution tunnel are forward and the direction toward the manhole is backward, and the respective directions will be described with reference to this.

The connection factor distribution board structure of the underground distribution line according to the present embodiment includes a ground distribution tunnel 100; A manhole 200 connected to one end of the ground distribution tunnel 100; A ground distribution line 10 is wired in the underground distribution tunnel 100 and an output line 20 of the distribution facility 300 is connected to the power distribution facility 300 Is applied to an underground distribution line connected to a ground distribution line (10) through a manhole (200) to an underground distribution tunnel (100).

The upper surface of the ground distribution tunnel 100 is completely buried in the ground, and the manhole 200 is buried in a state in which the upper surface is exposed at the ground surface. In FIG. 1, the boundary between the underground distribution tunnel 100 and the manhole 200 is indicated by a two-dot chain line.

As shown in the drawing, the underground distribution tunnel 100 may be configured such that a floor, both side walls, and an upper plate are integrally formed. However, the underground distribution tunnel 100 includes a tunnel main body having an opened top surface and a cover plate covering the upper part of the tunnel main body Can be configured.

The manhole 200 includes a manhole body 210 having an open upper surface and a first cover plate 220 and a second cover plate 230 covering the upper surface of the manhole body 210 You can. The floor, the side walls, and the upper plate may be integrally formed.

The first cover plate 220 is a part where the power distribution facility 300 such as a ground transformer or a ground switch is installed and the first cover plate 220 has a function as a base for supporting the power distribution facility 300 And the second cover plate 230 is a portion that is opened and closed so that a worker can actually enter and exit the manhole 200.

The power distribution facility 300 includes a power distribution box 310 that is seated on the first cover plate 220 and has a door 320 installed on the front of the power distribution facility 300 and a ground transformer Or a power distribution device 330 such as a ground switch. 2, the illustration and description of the internal structure of the power distribution device 330 are omitted.

The ground distribution line (10) is supported on a wire support base (30) fixedly installed on the bottom of the underground distribution tunnel (100). Although one wire support 30 is shown in the drawing, it can be supported by a plurality of wire supports 30 at predetermined intervals according to the length of the underground distribution wire 10.

The wire support base 30 is fixed to the bottom of the underground distribution tunnel 100 and has a lower support base 31 having a semicircular support groove 32 for covering the lower half of the outer circumference of the underground distribution cable 10 on the upper surface thereof, An upper support frame 33 coupled to an upper end of the lower support frame 31 and having a semicircular support groove 34 surrounding the upper half of the outer periphery of the underground distribution line 10, (Four in the drawing) of bolts B1.

The coupling bolt B1 passes through the upper support 33 and is fastened to the lower support 31. [

When the insulated coated wire is used as the underground power distribution line 10 and the output power line 20, the underground power distribution line 10 peels off the insulation coating at the manhole 200 side end of the underground distribution line 10 to expose the conductor portion, The output wire 20 can be configured to peel off the insulation coating at the lower end to expose the conductor portion so that the exposed conductor portion is mechanically and electrically connected to the connector 400 to be described later.

The connector 400 includes a connector body 410, a protrusion 420 protruding from a front side of the connector body 410, and a connector body 410 embedded in the connector body 410 and the protrusion 420, And an underground distribution line connection portion 432 in which the underground distribution line 10 is detachably connected to the output wire fixing connection portion 431 embedded in the protrusion portion 420 and fixed to the output wire 20, (See FIG. 5).

The connector 400 is installed to be movable between the underground distribution tunnel 100 and the manhole 200. When the underground distribution line 10 and the output line 20 are connected to each other, And is located inside the manhole 200 in a state where the underground distribution line 10 and the output line 20 are separated from each other. For this purpose, a separate slide guide means (not shown) may be provided.

The connector 400 is installed to be movable in forward and backward directions by the connector operating means 500.

The connector actuating means 500 includes a linear actuator 510 installed in the manhole 200 and an actuating rod 510 which is operated in the forward and backward directions by the linear actuator 510 and is coupled to the connector body 410 at its distal end 520) (see Figs. 6 and 7).

The linear actuator 510 may be a solenoid, a pneumatic cylinder, or the like, using a rotary motor and a screw.

The connector main body 410 is formed with a coupling hole 411 through which the operation rod 520 passes through the connector main body 410 and a screw portion 521 formed on the operation rod 520 to penetrate the operation rod 520 And the engaging nut 522 is fastened to the threaded portion 521 at the front and rear opposite ends of the connector main body 410 so as to be brought into close contact with both front and rear end surfaces of the connector body 410, Can be coupled to the distal end.

The connection factor switchboard structure of the underground distribution line according to the present embodiment includes a shutter device 600 for blocking the underground distribution tunnel 100 and the manhole 200 between the underground distribution tunnel 100 and the manhole 200 when a fire occurs ).

The shutter device 600 includes a pair of left and right guide rails 610 vertically installed at the left and right side walls of the manhole 200 at the boundary between the underground distribution tunnel 100 and the manhole 200, And a shutter plate 620 which is installed so as to be able to move up and down along the guide rail 610 (see FIGS. 6 and 7).

The connection factor switchboard structure of the underground distribution line according to the present embodiment further includes a connector-shutter interlocking means 700 for interlocking the shutter device 600 in conjunction with the connector separating operation of the connector operating means 500 .

The connector-shutter interlocking means 700 includes an interlocking arm 710 coupled to an intermediate portion of the operation rod 520, and a connector-shutter interlocking means 700 having one end fixed to both ends of the interlocking arm 710 and the other end connected to the shutter plate 620 A first guide roller 730 for inverting the interlocking wire rope 720 at a position adjacent to the interlocking arm 710 and a second guide roller 720 for inverting the interlocking wire rope 720 at a position adjacent to the interlocking arm 710, And a second guide roller 740 located on the lower front side of the guide wire 730 to upwardly reverse the interlocking wire rope 720 (see FIG. 7).

The interlocking arm 710 has a through hole 711 formed at an intermediate portion of the interlocking arm 710 so as to penetrate the operation rod 520 through the through hole 711, The engaging nut 712 is fastened to the threaded portion 521 of the interlocking arm 520 so as to be brought into close contact with both the front and rear end surfaces of the interlocking arm 710.

One end of the left and right pair of interlocking wire ropes 720 forms a semicircular groove 721 surrounding the lower half of the outer circumferential surface of the interlocking wire rope 720 on the upper left and right ends of the interlocking arm 710, And a fixing piece 722 which is seated on the upper surface of both ends and has a semicircular groove 723 surrounding the upper half of the outer circumferential surface of the interlocking wire rope 720 so that the interlocking wire rope 720 is inserted between the semicircular grooves 721 and 723 The fixing bolts B2 penetrating through the fixing pieces 722 can be fixed to both ends of the interlocking arm 710 by fastening them to the interlocking arms 710. [

The other ends of the left and right pair of interlocking wire ropes 720 are opposite to each other and are fixed to a pair of front and rear fixing pieces 724 and 722 having semicircular grooves 725 and 727 surrounding the front and rear portions of the outer circumferential surface of the interlocking wire rope 720, 726 can be fixed to the shutter plate 620 by fastening the fixing bolts B3 passing through the pair of fixing pieces 724, 726 to the rear surface of the shutter plate 620. [

The first guide roller 730 and the second guide roller 740 are each formed with a groove having a semicircular cross section and the first guide roller 730 is fixed to the bottom of the manhole 200 by roller supports 731, 741, respectively.

The roller support 731 may be mounted on a support block 732 fixed to the bottom of the manhole 200 to adjust the height.

Anchor bolts (not shown) are buried in the bottom of the manhole 200 to fix the roller supports 731 and 741 to the bottom of the manhole 200 and the anchor bolts are passed through the roller supports 731 and 741 A nut (not shown) can be fastened to the next anchor bolt.

The connector-shutter interlocking means 700 includes a stopper 750 for preventing the shutter plate 620 from descending arbitrarily in a state in which the shutter plate 620 rises and the underground distribution tunnel 100 and the manhole 200 are connected to each other ).

The stopper 750 is fixed to the front side of the guide rail 610 and includes a solenoid 751 having a working rod 752 and a stopper 751 coupled to a distal end of the working rod 752 of the solenoid 751, And a stopper piece 753 which is hooked on the lower surface of each of the stoppers 724 and 726. The stopper piece 753 is configured to catch the lower surface of the fixing pieces 724 and 726 in a state where the shutter plate 620 rises and the underground distribution tunnel 100 and the manhole 200 are communicated with each other.

The connection factor switchboard structure of the underground distribution line according to the present embodiment includes a manhole fire extinguisher 810 installed inside the manhole 200 and a distribution equipment extinguisher 820 installed inside the distribution facility box 310 .

The manhole extinguisher 810 includes a fire extinguisher main body 811 installed inside the manhole 200 and a spray pipe 812 connected to the fire extinguisher main body 811 and a solenoid valve 812 813).

The power distribution system fire extinguisher 820 includes a fire extinguisher main body 821 installed in the power distribution box 310, a spray pipe 822 connected to the fire extinguisher main body 821, And a solenoid valve 823.

The fire extinguisher main bodies 811 and 821 are formed in the form of a pressure tank, and an extinguishing agent is filled therein.

As the extinguishing agent, it is preferable to use an extinguishing agent containing CO 2 gas or dichlorotrifluoroethane (HCFC-123) gas as a main component, which can minimize the secondary damage to corrosion of power distribution facilities and electric wires after the fire is suppressed .

The manhole fire extinguisher 810 and the power distribution box extinguisher 820 are constructed such that the extinguishing agent is sprayed by controlling the solenoid valves 813 and 823 by the control means 900 to be described later, A fire extinguisher that detects and automatically extinguishes the fire extinguisher may be used.

The connection factor switchboard structure of the underground distribution line according to the present embodiment includes control means 900 for controlling the connector operation means 500, the stopper 750 and the manhole digester 810 and the power distribution box extinguisher 820 .

The control unit 900 includes a manhole fire detector 910 installed inside the manhole 200, a distribution facility box fire detector 920 installed inside the distribution facility box 310, A linear actuator connection direction operation control for causing the linear actuator 510 constituting the connector operating means 500 to advance forward in the connector connecting direction when no fire is detected by the detector 910 and the distribution box fire detector 920 And a solenoid stopping operation control command for causing the solenoid 751 constituting the stopper 750 to move forward in the stopping direction and the solenoid stopping operation control command for actuating the solenoid stopper 810 and the solenoid valves 813, 823 when the fire has been detected by the manhole fire detector 910 and the power distribution box fire detector 920. The connector operating means 50 0) is retracted in the connector detachment direction and a solenoid stop (not shown) for causing the solenoid 751 constituting the stopper 750 to retract in the detaching direction A controller 930 for outputting a release operation control command and a solenoid valve release operation control command for causing the solenoid valves 813 and 823 constituting the manhole extinguisher 810 and the power distribution box extinguisher 820 to open; A linear actuator driving unit 940 for driving the linear actuator 510 to operate in a connecting direction or a separating direction in accordance with a linear actuator control command of the controller 930, and a solenoid 751, according to a solenoid control command of the controller 930, A solenoid drive unit 950 for driving the solenoid drive unit 930 to operate in a stopping direction or a stop releasing direction, La is configured to include a solenoid valve solenoid valve drive unit (960, 970) for driving to (813, 823) is closed or the opening operation.

Hereinafter, the operation of the connection factor distribution board structure of the underground distribution line according to the present embodiment will be described.

In the initial state, the underground distribution line 10 is supported in the underground distribution tunnel 100 by the wire support 30, and the connector 400 is moved in accordance with the advancement of the operation rod 520 of the connector operation means 500 So that the ground distribution line 10 and the output line 20 are maintained connected by the connector 400. That is, the output wire 20 is fixedly connected to the output wire fixed connection portion 431 of the connector 400 and the underground distribution line 10 is connected to the underground distribution line connection portion 432 and electrically connected through the connection conductor 430 .

The shutter plate 620 of the shutter device 600 is lifted and held in a state where the boundary between the underground distribution tunnel 100 and the manhole 200 is opened and communicated with each other, The interlocking arm 710 is kept in the advanced state with the connector 400 as the working rod 520 advances (see Figs. 2 to 4 and Fig. 8).

At this time, the solenoid 751 constituting the stopper 750 advances and the stopper piece 753 coupled to the actuating rod 752 is engaged with the lower surface of the fixing pieces 724 and 726 fixed to the shutter plate 620 So that the shutter plate 620 can not be lowered arbitrarily.

The stopper 750 is fixed to the front side of the guide rail 610 and includes a solenoid 751 having a working rod 752 and a stopper 751 coupled to a distal end of the working rod 752 of the solenoid 751, And a stopper piece 753 which is hooked on the lower surface of each of the stoppers 724 and 726. The stopper piece 753 is configured to catch the lower surface of the fixing pieces 724 and 726 in a state where the shutter plate 620 rises and the underground distribution tunnel 100 and the manhole 200 are communicated with each other.

When a fire occurs in the underground distribution tunnel 100 or the manhole 200 in this state, the manhole fire detector 910 senses the fire and transmits a fire detection signal to the controller 930. In the distribution facility box 310, When a fire occurs, the distribution facility box fire detector 920 senses the fire and transmits a fire detection signal to the controller 930.

The control unit 930 receiving the fire detection signal receives the connector detachment direction operation control command for the linear actuator 510 constituting the connector operating means 500 and the solenoid stop for the solenoid 751 constituting the stopper 750 Release operation control command and the solenoid valve release operation control command to the solenoid valves 813 and 823 constituting the manhole extinguisher 810 and the power distribution box extinguisher 820. [

The linear actuator driving unit 940 sends a connector detachment direction actuating drive signal to the linear actuator 510 according to the connector detachment direction operation control command of the controller 930 and outputs a connector detachment direction actuating drive signal to the solenoid deactuation operation control command of the controller 930 The solenoid drive unit 950 sends a stop release operation drive signal to the solenoid 750 and the solenoid valve drive units 960 and 970 are driven by the manhole extinguisher 810 And the open operation drive signal for the solenoid valve 823 of the power distribution box extinguisher 820 is sent out.

The linear actuator 510 of the connector actuating means 500 retracts in the connector separating operation direction in accordance with the connector separating direction actuating drive signal of the linear actuator driving section 940 and the connector 400 coupled to the actuating rod 520, The underground distribution line 10 is disconnected from the underground distribution line connection portion 432 of the connector 400 and the underground distribution line 10 and the output line 20 are separated.

The solenoid 751 constituting the stopper 750 is retracted in response to the operation signal of the stop release operation of the solenoid drive unit 950 and accordingly the movable plate 752 is fixed to the shutter plate 620, The stopper piece 753 which is hooked on the lower surface of the shutter plate 620 is retracted to release the stopping of the shutter plate 620, so that the shutter plate 620 can be lowered.

As the operation rod 520 is retracted, the interlocking arm 710 of the connector-shutter interlocking means 700 coupled to the operation rod 520 is retracted, and the interlocking arm 710 of the interlocking arm 710, The lower end of the wire rope 720 is pulled in the retreating direction and is coupled to the upper end of the interlocking wire rope 720 which is guided in a state of being reversed by the first guide roller 730 and the second guide roller 740 The shutter plate 620 is pulled downward and descends to block the gap between the underground distribution tunnel 100 and the manhole 200.

Since the connector 400 and the shutter plate 620 are structured to be interlocked by the operation rod 520, the interlocking arm 710 and the interlocking wire rope 720, the horizontal retraction distance of the connector 400, The falling distance of the shutter plate 620 in the vertical direction is the same, so that the falling shutter plate 620 can be designed to operate without collision or interference with the retreating connector 400.

As the underground distribution tunnel 100 and the manhole 200 are blocked, the fire generated in the underground distribution tunnel 100 is diffused into the manhole 200 or the fire generated in the manhole 200 is diffused into the underground distribution tunnel 100. [ So that the damage due to the spread of the fire can be minimized.

As the solenoid valves 813 and 823 are opened, the extinguishing agent charged in the manhole extinguisher 810 and the power distribution box extinguisher 820 is discharged through the spray pipes 812 and 822 to the inside of the manhole 200, The fire generated in the manhole 200 or the power distribution box 310 can be rapidly suppressed by itself and the damage caused by the fire can be minimized.

In addition, by using a fire extinguishing agent mainly composed of CO 2 gas or dichlorotrifluoroethane (HCFC-123) gas as the extinguishing agent used in the manhole fire extinguisher 810 and the power distribution box extinguisher 820, Secondary damage can be minimized, minimizing replacement parts and allowing for faster recovery.

After the fire is extinguished, the restoration work can not be automatically restored because it is necessary to replace damaged part due to fire and reassembly of each part.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or essential characteristics thereof. Therefore, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: Underground distribution line 20: Output line
30: Cable support 100: Underground distribution tunnel
200: Manhole 300: Distribution facility
400: connector 500: connector operating means
510: Linear actuator 520: Working rod
600: shutter device 610: guide rail
620: shutter plate 700: connector-shutter interlocking means
710: Interlocking arm 720: Interlocking wire rope
730, 740: guide roller 750: stopper
810: Manhole fire extinguisher 820: Power distribution box fire extinguisher
900: control unit 910: manhole fire detector
920: Power distributor box fire detector 930:
940: Linear actuator driving part 950: Solenoid driving part
960, 970: Solenoid valve driving part

Claims (1)

A ground distribution tunnel (100); A manhole 200 connected to one end of the ground distribution tunnel 100; A ground distribution line 10 is wired in the underground distribution tunnel 100 and a power distribution apparatus 300 is installed in the distribution facility box 310. The ground distribution line The output power line 20 of the distribution facility 300 in which the power line 330 is accommodated is connected to the underground distribution line 10 through the manhole 200 to the underground distribution tunnel 100, ,
The underground distribution line 10 is supported by a wire support 30 fixed to the bottom of the underground distribution tunnel 100 and the underground distribution line 10 and the output wire 20 are supported by the underground distribution tunnel 100, The underground distribution line 10 and the output line 20 are located inside the underground distribution tunnel 100 in a state where the underground distribution line 10 and the output line 20 are connected to each other, The connector 400 can be connected and detached by the connector 400 located inside the manhole 200,
The connector 400 includes a connector body 410, a protrusion 420 protruding from a front side of the connector body 410, and a connector body 410 embedded in the connector body 410 and the protrusion 420, And an underground distribution line connection portion 432 in which the underground distribution line 10 is detachably connected to the output wire fixing connection portion 431 embedded in the protrusion portion 420 and fixed to the output wire 20, (430)
Further comprising connector operating means (500) for moving said connector (400) in the anteroposterior direction,
The connector actuating means 500 includes a linear actuator 510 installed in the manhole 200 and an actuating rod 510 which is operated in the forward and backward directions by the linear actuator 510 and is coupled to the connector body 410 at its distal end 520,
A shutter device 600 is provided between the ground distribution tunnel 100 and the manhole 200 to shut off the underground distribution tunnel 100 and the manhole 200 when a fire occurs,
The shutter device 600 includes a pair of left and right guide rails 610 vertically installed at the left and right side walls of the manhole 200 at the boundary between the underground distribution tunnel 100 and the manhole 200, And a shutter plate 620 which is installed to be able to move up and down along the guide rails 610 of the guide rails 610,
Further comprising a connector-shutter interlocking means (700) for interrupting the shutter apparatus (600) in conjunction with the connector separating operation of the connector operating means (500)
The connector-shutter interlocking means 700 includes an interlocking arm 710 coupled to an intermediate portion of the operation rod 520, and a connector-shutter interlocking means 700 having one end fixed to both ends of the interlocking arm 710 and the other end connected to the shutter plate 620 A first guide roller 730 for inverting the interlocking wire rope 720 at a position adjacent to the interlocking arm 710 and a second guide roller 720 for inverting the interlocking wire rope 720 at a position adjacent to the interlocking arm 710, And a second guide roller 740 located on the lower front side of the guide wire 730 for upwardly reversing the interlocking wire rope 720,
The other ends of the left and right pair of interlocking wire ropes 720 are opposite to each other and are fixed to a pair of front and rear fixing pieces 724 and 722 having semicircular grooves 725 and 727 surrounding the front and rear portions of the outer circumferential surface of the interlocking wire rope 720, 726 are fixed to the shutter plate 620 by fastening a fixing bolt B3 passing through the pair of fixing pieces 724, 726 to the rear surface of the shutter plate 620,
The connector-shutter interlocking means 700 includes a solenoid 751 fixed to the front side of the guide rail 610 and having a working rod 752, and a connector 751 coupled to the distal end of the working rod 752 of the solenoid 751 Further comprising a stopper (750) provided with a stopper piece (753) which is caught on the lower surface of the fixing pieces (724, 726)
A manhole fire extinguisher 811 provided with a fire extinguisher main body 811 installed inside the manhole 200, a spray pipe 812 connected to the fire extinguisher main body 811 and a solenoid valve 813 provided in the spray pipe 812, A main body 821 installed in the power distribution box 310 and a discharge pipe 822 connected to the main body 821 of the extinguisher main body 821 and a solenoid valve Further comprising a power distribution unit extinguisher (820) provided with a power source (823)
Further comprising control means (900) for controlling the connector operating means (500), the stopper (750) and the manhole extinguisher (810) and the power distribution box extinguisher (820)
The control unit 900 includes a manhole fire detector 910 installed inside the manhole 200, a distribution facility box fire detector 920 installed inside the distribution facility box 310, A linear actuator connection direction operation control for causing the linear actuator 510 constituting the connector operating means 500 to advance forward in the connector connecting direction when no fire is detected by the detector 910 and the distribution box fire detector 920 And a solenoid stopping operation control command for causing the solenoid 751 constituting the stopper 750 to move forward in the stopping direction and the solenoid stopping operation control command for actuating the solenoid stopper 810 and the solenoid valves 813, 823 when the fire has been detected by the manhole fire detector 910 and the power distribution box fire detector 920. The connector operating means 50 0) is retracted in the connector detachment direction and a solenoid stop (not shown) for causing the solenoid 751 constituting the stopper 750 to retract in the detaching direction A controller 930 for outputting a release operation control command and a solenoid valve release operation control command for causing the solenoid valves 813 and 823 constituting the manhole extinguisher 810 and the power distribution box extinguisher 820 to open; A linear actuator driving unit 940 for driving the linear actuator 510 to operate in a connecting direction or a separating direction in accordance with a linear actuator control command of the controller 930, and a solenoid 751, according to a solenoid control command of the controller 930, A solenoid drive unit 950 for driving the solenoid drive unit 930 to operate in a stopping direction or a stop releasing direction, Connection factor switchboard structure of a solenoid valve la underground distribution line, characterized by configured by comprising a solenoid valve drive unit (960, 970) for driving to (813, 823) is closed or the opening operation.
KR1020160008754A 2016-01-25 2016-01-25 Distributing board of underground electric power distribution line KR101683769B1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101955302B1 (en) * 2018-08-29 2019-03-08 주식회사 남해이엔지 Coupler apparatus for distributing cable
KR102030659B1 (en) 2019-02-25 2019-10-10 주식회사 서부전기 Distributing board of underground electric power distribution line
KR102160996B1 (en) 2020-01-15 2020-09-29 이정국 Protection apparatus for underground power distribution line
KR102313346B1 (en) * 2021-01-29 2021-10-15 주식회사 강남엔지니어링 Switchboard connection terminal apparatus of underground distribution line
KR102386594B1 (en) 2021-04-27 2022-04-15 (주)삼화종합기술 Power distribution box for underground power distribution line

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KR101057450B1 (en) * 2011-02-14 2011-08-19 기술사사무소 세일엔지니어링(주) Underground line protection pipe having a fireproof shutter
KR101231215B1 (en) 2012-09-06 2013-02-07 (주)한신콘설탄트 Under ground insulating switch board
KR101483492B1 (en) 2014-07-03 2015-01-16 (주)신라감리단 Under ground insulating switch board

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KR101057450B1 (en) * 2011-02-14 2011-08-19 기술사사무소 세일엔지니어링(주) Underground line protection pipe having a fireproof shutter
KR101231215B1 (en) 2012-09-06 2013-02-07 (주)한신콘설탄트 Under ground insulating switch board
KR101483492B1 (en) 2014-07-03 2015-01-16 (주)신라감리단 Under ground insulating switch board

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101955302B1 (en) * 2018-08-29 2019-03-08 주식회사 남해이엔지 Coupler apparatus for distributing cable
KR102030659B1 (en) 2019-02-25 2019-10-10 주식회사 서부전기 Distributing board of underground electric power distribution line
KR102160996B1 (en) 2020-01-15 2020-09-29 이정국 Protection apparatus for underground power distribution line
KR102313346B1 (en) * 2021-01-29 2021-10-15 주식회사 강남엔지니어링 Switchboard connection terminal apparatus of underground distribution line
KR102386594B1 (en) 2021-04-27 2022-04-15 (주)삼화종합기술 Power distribution box for underground power distribution line

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