KR100904917B1 - Frame for underground distribution line fixation - Google Patents

Abstract

A connection structure for an underground wire is provided to prevent an underground wire from being damaged by informing an administrator of a fire inside a manhole through wireless communication. A supporting unit(10) is fixed in a bottom surface of a manhole(1). A protector(20) reciprocates in the supporting unit vertically. The protector protects the underground wire. A spring supports the protector elastically. A switch(30) is turned on or off by the protector. A fire sensor(40) is installed in the manhole to sense the fire. A controller(50) outputs an emergency signal according to an operation signal of the switch. The controller outputs the operation signal according to the fire sensing signal of the fire sensor. A transmission unit(60) transmits the emergency signal and the fire sensing signal of the controller to the outside. A first hydrant(70) sprays the fire-fighting liquid to a fire area through a spray valve. A pair of guide rollers(80) guide the underground wire.

Description

Frame for Underground Distribution Line Fixation}

The present invention relates to an electrical safety accident prevention underground distribution line connection structure that is able to effectively protect the underground wires embedded in the ground and connected by mutual bolting inside the manhole.

In general, electricity used in each home, office, and large-scale factories is supplied with electricity through substations installed in each region. These substations are installed for the purpose of modifying voltage or current and distributing power. Power generated in the is sent to the user through the transmission line or distribution line.

The substation is generally installed on the ground, in the case of such a substation is to transfer the high-voltage current is a high voltage wire is mostly exposed to the outside, the high-voltage wire exposed to the outside is a short circuit and short circuit due to external interference It is easy to be induced, and because of the dizzying hypothesis of high voltage cables, there is a problem such as hatching the surrounding landscape.

When installing high voltage cables in the basement as described above, problems such as external interference and surrounding landscape damage were solved because they were not exposed to the outside. However, the length of the first designed high voltage cables was longer depending on the site conditions. Even though there is a problem that needs to be further connected, it continues to be implemented.

In the case of the high-voltage wire, the diameter of the high-voltage wire is considerably thick due to the nature of supplying power at a high voltage, so that the high-voltage wire is coupled to each other by bolting in a state where they are opposed to each other.

When the ground is easily cooled, such as winter, the high-voltage wire is simply connected to each other, and the inner copper wire and the outer cover wire of the underground wire are rapidly cooled and contracted to generate excessive tension. There is a problem such as short-circuit easily, conventionally there was no means to tell in advance that excessive tension is generated in this way.

On the other hand, underground cables wired inside the manhole repeatedly generate tension and shrinkage due to temperature changes, and stress is generated therein. Partial breakage may cause an electrical short circuit or penetrate into the inside of the insulated wire that has lost its protective function due to aging and contact with current flowing wires, resulting in a short circuit and a short circuit. As there is a problem such as all burned down, research is being actively conducted to inform the workers in case of fire and to extinguish the fire.

Therefore, the present invention has been made to solve the above problems, the operator can quickly cope by sending a danger signal to the worker in advance so that the underground wires interconnected inside the manhole are excessively tensioned and the joints are not shorted. It can protect the joints of interconnected underground cables safely, and notify the manager through wireless transmission in case of fire due to short circuit or short circuit inside the manhole, and promptly extinguish the fire zone through the fire hydrant. The purpose of the present invention is to provide an electrical safety accident prevention underground distribution line connection structure that can prevent the underground cables from being burned out and lost.

The present invention for solving the problem to be solved,

It has a fixing stand fixed to the bottom surface having an insertion groove with an upper opening, and a pair of support pieces which are formed to protrude on the upper surface of the fixing stand, and are arranged to face each other with a guide groove in the vertical direction on the inner surface. A support;

A first cap having a guide piece inserted into the guide groove is fixed to be reciprocally movable in the vertical direction of the stator, and is formed to be rotatably installed on the first cap to wrap the underground wire received therein, A protective device having a second cap having an injection hole formed therein, and a sealant which is injected into the interior of the injection hole and covers and insulates the joints of the interconnected underground wires;

A spring having one end fixed to the bottom of the protector and the other end inserted into the insertion groove of the support to support the protector in one direction;

A switch mounted to the support piece to sense movement of the protective device to the restricted position;

A fire detection sensor installed inside the manhole and detecting heat generated in a fire;

A control unit which receives a detection signal from a switch and outputs an emergency signal, and receives a fire detection signal from a fire detection sensor and outputs a hydrant operation signal;

A transmitter which is operated by the controller and wirelessly transmits an emergency signal and a fire detection signal from the controller;

A hydrant having an injection valve operatively controlled by the hydrant operation signal of the controller, the hydrant spraying the fire extinguishing liquid filled therein into the manhole through the injection valve;

It is achieved by the electrical safety accident prevention underground distribution line connection structure that includes a pair of rotating rollers rotatably installed on the side wall of the manhole to guide the coating of the underground wires from being damaged.

According to the present invention having the above configuration, the joint is short-circuited by transmitting a danger signal to the worker through the switch, the control unit, and the transmission unit by the tension force generated by the contraction of the underground wire in winter. It can be prevented in advance, and the underground wires connected by mutual bolting can be accommodated inside the protective equipment and sealed by injecting a sealant, thereby preventing rainwater or groundwater from contacting the joint. It also prevents short circuit or short circuit, and also notifies manager through wireless transmission in case of fire due to short circuit and short circuit inside manhole where underground cables are wired, and quickly extinguish fire area through fire hydrant to wire inside That the entire underground cable is burned down and lost due to fire. You can block.

Hereinafter, it will be described in detail based on the illustrated drawings.

1 is an installation state diagram of the electrical safety accident prevention underground distribution line connection structure according to the present invention, Figure 2 is a main part perspective view showing the main parts separately from the electrical safety accident prevention underground distribution line connection structure according to the present invention, 3 is a block diagram showing the interconnection relationship between the components of the electrical safety accident prevention underground distribution line connection structure according to the present invention.

The electrical safety accident prevention underground distribution line connection structure according to the present invention is fixed to the bottom surface of the manhole (1), the support portion 10 for guiding the protective equipment 20 can be reciprocated up and down; A protection tool 20 installed on the support part 10 so as to be capable of vertical reciprocation, and having the underground wires L1 and L2 fastened by mutual bolts being accommodated therein; One end is fixed to the bottom surface of the protective tool 20, the other end is inserted into the insertion groove (11a) of the support portion 10 and the spring (S) for supporting the protective tool 20 in one direction; A switch 30 installed on the support piece 12 and turned on / off by a protective tool 20 reciprocating up and down; A fire detection sensor 40 installed inside the manhole 1 and detecting heat generated in a fire; A control unit 50 receiving an operation signal from the switch 30 and outputting an emergency signal, and receiving a fire detection signal from the fire detection sensor 60 and outputting an operation signal; A transmission unit 60 which is operated and controlled by the control unit 50 to wirelessly transmit emergency signals and fire detection signals from the control unit 50 to the outside; A fire hydrant 70 having an injection valve 71 which is operated and controlled by an operation signal of the control unit 50 and spraying the fire extinguishing liquid filled therein into the manhole 1 through the injection valve 71 to spray the fire zone 70. )and; It is composed of a pair of rotary rollers 80 which are rotatably installed on the side wall of the manhole 1 to guide the coating of the underground wires L1 and L2 so as not to be damaged, as shown in FIGS. 1 to 2.

The manhole (1) embedded in the ground, the upper part is opened in the concrete material, the manhole cover (2) is installed to be opened and closed to the upper side is opened, the underground wire (enter the inner surface) to enter the inner side ( An embedded wiring tube 3 is provided so as to protect the coating of L1 and L2 and to wire at the same time.

The support part 10 which is installed on the bottom surface of the manhole 1 and guides the protective tool 20 to be able to reciprocate up and down is provided with an insertion groove 11a whose upper part is opened, and the bottom surface of the manhole 1. A pair of support pieces 12 are formed to protrude on the upper surface of the fixing stand 11 and the fixing stand 11, which are fixed to the inner surface and are arranged to face each other with a guide groove 12a in the vertical direction. .

A guide piece inserted in the guide groove 12a is installed in the support part 10 so as to be capable of vertical reciprocating transfer, and the inside of which the protective wire 20 accommodated and protected by underground wires L1 and L2 fastened by mutual bolts is inserted therein. A first cap 21 having a 21a and fixedly movable reciprocally in a vertical direction of the holder 11; A second cap 22 rotatably installed on the first cap 21 so as to wrap underground wires L1 and L2 accommodated therein, and having an injection hole 22a formed in an upper center thereof; It is made of a sealant (SC) that is injected through the injection hole (22a) to cover and insulate the joints of the interconnected underground wires (L1, L2).

The first cap 21 and the second cap 22 is formed so as to be mutually coupled by forming a fixing groove (22b) corresponding to the fixed rod (21b) and the fixed rod (21b) in a portion that is folded.

In addition, the bottom surface of the first cap 21 is integrally formed with a single rod (not specifically shown) which projects downward and is loaded with the spring S on the outer circumferential surface.

In addition, the sealing agent (SC) that is injected into the interior through the injection hole (22a) to cover and insulate the joint portion is cured after a predetermined time to maintain a predetermined elasticity and to protect the joint portion at the same time It is preferable to form with silicon.

In addition, the guide piece 21a protruding horizontally on both side ends has a protective tool 20 vertically reciprocated when the guide piece 21a is inserted into the guide groove 12a of the support piece 12 in a planar shape. It is to be able to slide stably without departing outward.

The spring (S) is protruded into the support (11) of the support portion 10 is fixed to the end of the protector 20 (not specifically shown) to support the protective device 20 in one direction.

A switch 30 is installed on the support piece 12 of the support part 10, and the switch 30 is a protective device for reciprocating between the pair of support pieces 12 with a conventional limit switch. By 20) the horizontally projecting operation piece (not specifically shown) is rotated about the axis to sense the movement of the protective device 20 to the restricted position.

In the present embodiment, the limit position means a position where the protective device 20 is vertically lowered so that the tensile force of the underground wires L1 and L2 is maximized.

Therefore, when the switch 30 detects the protective device 20 moved to the limit position, the detection signal output from the switch 30 is input to the control unit 50, the control unit 50 receives the detection signal The emergency signal is output and transmitted to the transmission unit 60, and the transmission unit 60 that has received the emergency signal transmits the emergency signal to the central control room (not specifically shown) where the operator resides by radio, Determining the state of the current underground wire (L1, L2) through the emergency signal received will be able to respond quickly.

On the other hand, the fire detection sensor 40 is installed inside the manhole (1), in the present embodiment, the fire detection sensor 40 is a conventional heat sensor, due to excessive contraction of the underground wire (L1, L2) If a part of the conductor is broken due to a short circuit, a fire occurs due to an electric short circuit, or a penetrating water flows into the inside of the coated line which has lost its protection function due to aging, and it comes into contact with a conducting current through a short circuit. The heat detection sensor, that is, the fire detection sensor 40 detects the heat of the high temperature, and transmits a fire detection signal to the controller 50.

Therefore, the control unit 50 that receives the fire detection signal from the fire detection sensor 40 transmits the hydrant operation signal to the injection valve 71 of the hydrant 70 installed in the manhole 1 so that the injection valve ( The fire extinguishing liquid may be injected into the manhole 1 through 71 and at the same time, a fire detection signal is output and transmitted to the transmitter 60.

The fire hydrant 70 is made of a steel container with a hard outer surface, and is filled with a fire extinguishing agent and compressed air or a non-combustible gas (nitrogen, carbon dioxide, halogen gas) liquefied at a high pressure, and one side of the container is filled inside. The injection valve 71 for controlling the outflow of the extinguishing agent and incombustible gas is installed.

In the present embodiment, when the hydrant operation signal is input from the control unit 50, the inlet of the injection valve 71 is opened, and at this time, the extinguishing agent and the non-combustible gas filled in the steel container are separated by the internal pressure of the injection valve 71. It is injected into the manhole (1) through the inlet to extinguish the fire zone for a moment, thereby minimizing the damage caused by the fire.

Therefore, the control unit 50 that receives the fire detection signal from the fire detection sensor 40 transmits the hydrant operation signal to the injection valve 71 of the hydrant 70 installed in the manhole 1 so that the injection valve ( 71 through the fire extinguishing fluid (digestive chemicals and non-combustible gas) can be injected into the manhole (1) and at the same time to output a fire detection signal to the transmission unit 60, the transmission unit received the fire detection signal (60) ) Wirelessly transmits a fire detection signal to a central control room (not specifically shown) where the worker resides, whereby other wires wired inside the manhole 1 are burned out through the fire detection signal received by the worker. It will be possible to quickly respond to the follow-up measures so as not to be complete, as shown in FIG.

The pair of rotary rollers 80 which guide the damage of the underground wires L1 and L2 so as not to be damaged are brackets (not specifically shown) in which one end is fixed to the inner wall of the manhole 1 and the other end protrudes inward. ), And a roller (not specifically shown) installed so as to be idle at the end of the bracket (not specifically shown).

Referring to the operational relationship of the present invention made of the above configuration as follows.

4a to 4b is a view showing the operation of the electrical safety accident prevention underground distribution line connection structure according to the present invention.

In the case of a season with little temperature change, that is, spring and autumn, as shown in FIG. 1, the ground wires L1 and L2 are fastened to each other, and the protective device 20 inserted therein is a spring placed in the center of the support 10. (S) is always kept in a state of explosion.

However, in winter, tensile force is generated as the copper wire constituting the underground wires (L1, L2) and the covering wire surrounding the wires are contracted, and thus the underground wires (L1, L2) connected to each other are pulled in opposite directions.

As such, when the tension wires are generated in opposite directions to the underground wires L1 and L2, the protective wires 20 inserted into the underground wires L1 and L2 are gradually lowered vertically along the support part 10. While pressing the spring (S) disposed on the bottom surface of the protective device (20).

When the process is described in more detail, the guide piece 21a of the protective device 20 inserted into the guide groove 12a of the support 10 is vertically lowered by the tensile force generated in the ground wires L1 and L2. , Spring (S) disposed on the bottom surface of the protective device 20 is gradually pressed, the operating piece (not specifically shown) of the switch 30 installed in the limited position of the support piece 12 is lowered protective equipment ( The sensing signal is transmitted to the controller 50 while being rotated about the axis by 20.

The control unit 50 receives the detection signal of the switch 30 and outputs an emergency signal, and the output emergency signal is the central control room where the operator resides through the transmitter 60 exposed to the ground (not specifically shown). Emergency signal).

Therefore, the operator can easily recognize the state of the current underground wire (L1, L2) through the received emergency signal to quickly follow up.

On the other hand, underground wires (L1, L2) wired inside the manhole (1), the tension and shrinkage caused by the temperature change repeatedly occurs, the stress is generated therein.

If a certain period of time has elapsed in the above state, a part of the conductor may be broken due to repeated tension and contraction, resulting in an electrical short circuit, or the infiltration water may flow into the inside of the insulated wire, which has lost its protective function due to aging, and contact with the current flowing conductor. As a result, a fire occurs due to a short circuit and a short circuit.

Therefore, when a fire occurs in the manhole 1 due to an electric short circuit, the fire detection sensor 40 installed in the manhole 1 detects heat generated in a fire and transmits a fire detection signal to the controller 50. In addition, the control unit 50 that receives the fire detection signal from the fire detection sensor 40 transmits the hydrant operation signal to the injection valve 71 of the hydrant 70 installed in the manhole 1 to inject the injection valve ( The fire extinguishing liquid may be injected into the manhole 1 through 71 and at the same time, a fire detection signal is output and transmitted to the transmitter 60.

When the hydrant operation signal is input from the control unit 50, the inlet of the injection valve 71 is opened. At this time, the extinguishing agent and the non-combustible gas filled in the steel container are manhole 1 through the inlet of the injection valve 71 by internal pressure. It is sprayed inside to extinguish the fire zone for a moment.

Furthermore, the transmitter 60 receiving the fire detection signal from the fire detection sensor 40 wirelessly transmits the fire detection signal to the central control room (not specifically shown) where the worker resides, thereby receiving the worker. Through the fire detection signal, other wires wired inside the manhole 1 can be quickly responded to by following actions so that they are not burned down.

In addition, the pair of rotary rollers 80 installed on the side wall of the manhole 1 to be opposed to the underground wires L1 and L2 are idled by the underground wires L1 and L2 to move outward, It serves as a guide so that the coating of (L1, L2) is not damaged by the wiring pipe (3) inserted into the wall of the manhole (1).

Therefore, when the tension state applied to the underground wires L1 and L2 is released, the protective device 20 which presses the spring S is gradually shot by the spring S and returns to the initial state.

Although the present invention has been described in detail only with respect to the specific embodiments described, it will be obvious to those skilled in the art that various modifications and changes can be made within the technical scope of the present invention, and such modifications and modifications belong to the appended claims.

1 is an installation state of the electrical safety accident prevention underground distribution line connection structure according to the present invention.

Figure 2 is a perspective view showing the main parts of the electrical safety accident prevention underground distribution line connection structure according to the present invention separately extracted.

Figure 3 is a block diagram showing the interconnection relationship between the components of the electrical safety accident prevention underground distribution line connection structure according to the present invention.

4a to 4b is an operation relationship diagram of the electrical safety accident prevention underground distribution line connection structure according to the present invention.

* Description of the symbols for the main parts of the drawings *

1: manhole 10: support portion 11: fixing table

12: support 20: protective gear 21: first cap

22: second cap SC: sealant S: spring

30: switch 40: fire detection sensor 50: control unit

60: transmitter 70: hydrant 71: injection valve

80: rotary roller

Claims (1)

A fixing stand 11 fixed to the bottom surface with an insertion groove 11a having an upper portion formed therein, and is formed to protrude on the upper surface of the fixing stand 11, and has a guide groove 12a in the vertical direction on the inner surface thereof. A support part 10 having a pair of support pieces 12 disposed to face each other; The first cap 21 is rotatably installed in the first cap 21 and the first cap 21 is fixed to the guide plate 21a to be inserted into the guide groove 21a so as to be reciprocally movable in the vertical direction of the holder 11. It is formed to surround the underground wires (L1, L2) accommodated therein, the upper center is the second cap 22 is formed with an injection hole 22a and the underground wire connected to each other through the injection hole (22a) A protective device (20) provided with a sealing agent (SC) that covers and insulates the joints of (L1, L2); A spring S having one end fixed to the bottom of the protection tool 20 and the other end inserted into the insertion groove 11a of the support 10 to support the protection device 20 in one direction; A switch 30 mounted to the support piece 12 to sense movement of the protective device 20 to the restricted position; A fire detection sensor 40 installed inside the manhole 1 and detecting heat generated in a fire; A control unit 50 which receives a detection signal from the switch 30 and outputs an emergency signal, and receives a fire detection signal from the fire detection sensor 60 and outputs a hydrant operation signal; A transmission unit 60 which is operated and controlled by the control unit 50 to wirelessly transmit emergency signals and fire detection signals from the control unit 50 to the outside; A fire hydrant having an injection valve 71 which is operated and controlled by a hydrant operation signal of the controller 50, and spraying the fire extinguishing liquid filled therein into the manhole 1 through the injection valve 71 to spray the fire zone ( 70); An electrical safety accident prevention underground distribution line comprising a pair of rotating rollers 80 rotatably installed on the side wall of the manhole 1 to guide the coating of the underground cables L1 and L2 from being damaged. Connection structure.

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