KR101145723B1 - Metal Clad Switch-Gear/Cubicle - Google Patents

Abstract

According to the present invention, an independent compartment structure for each load effectively blocks the spread to peripheral circuits or devices during various accidents such as fire, while the appearance is beautiful and the installation area can be greatly reduced due to miniaturization, and also due to durability and reduced number of parts. An object of the present invention is to provide a closed switchgear capable of improving assembly performance.
To this end, in the present invention, the partition wall is installed so that the contact portion of the circuit breaker is embedded in an isolated state, and a breaker chamber having an upper surface and an upper surface of the breaker chamber are installed, and an exhaust passage connected to the breaker chamber is formed therein. The upper surface of the exhaust passage is provided with a control chamber having a first outlet for gas discharge, adjacent to the rear of the breaker chamber, the secondary insulation chamber having an opening in the rear upper surface, and installed in the front upper surface of the secondary insulation chamber And an upper side insulating chamber having a second discharge port for discharging gas on an upper surface thereof, and adjacent to a rear surface of the primary insulating chamber so as to be connected to an opening of the upper side of the secondary insulating chamber. Disclosed is a closed switchgear including an exhaust chamber provided with a third discharge port.

Description

Closed Switchboard {Metal Clad Switch-Gear / Cubicle}

The present invention relates to a closed switchgear, specifically, through an independent compartment structure for each load, it effectively cuts the spread to peripheral circuits or devices in case of various accidents such as fire, while having a beautiful appearance and greatly reducing the installation area by miniaturization. In addition, the present invention relates to a closed switchgear capable of improving assembly performance due to durability and reduced number of parts.

In general, closed switchboards receive high-voltage electricity and reduce the pressure appropriately for each consumer's load.Then, relays, transformers, circuit breakers (CB), and disconnectors (DS) are used to monitor and control electrical equipment or circuits for distribution. Concentrated facilities for switchgear, busbars, etc. in one place, consisting of multiple compartments having separate spaces or divided by grounded metal or insulated bulkheads to be isolated and stored for each unit circuit Various forms are used.

However, in the conventional closed switchboard, due to the characteristics of the closed structure, gas such as high temperature and high pressure steam or smoke generated during an accident involving an arc or flashover of the power system is not quickly discharged to the outside. The circuit is easily damaged, and gas generated individually in one compartment spreads to another adjacent compartment, which acts as a risk factor for secondary accidents.

In addition, in the case of stacking independent enclosure-type compartments in multiple layers, the compartment located at the bottom is limited in that gas cannot be smoothly discharged to the upper side, and as a result, several compartments have to be arranged side by side in a substation room. There was a restriction to secure a lot of installation space in the installation place.

In addition, since most of the plate-shaped panels are welded to the upper, lower, left, and right sides of the hexahedral support frame to form a hexahedral enclosure with an open front surface, and a door is mounted in the opening, a lot of parts and work are required. There is also a problem in that defective parts are caused by missing parts or mistakes and increase manufacturing costs.

Accordingly, the inventors of the present invention devised and completed the present invention while devoting many years to study the development of a new type of closed switchgear with the emphasis on solving the above-mentioned matters and solving the problems.

Accordingly, it is an object of the present invention to provide a closed switchgear capable of quickly and smoothly discharging gas for each compartment.

Another object of the present invention is to provide a closed switchgear that can be miniaturized to reduce the installation space.

It is still another object of the present invention to provide a closed switchgear capable of reducing the number of parts and improving the assemblability.

In order to achieve the above object, the present invention is provided with a partition wall so that the contact portion of the circuit breaker is built in an isolated state, an upper surface of the breaker chamber is installed, and is installed on the upper surface of the breaker chamber is connected to the breaker chamber therein An exhaust passage is formed and a control chamber including a first discharge port for discharging gas on an upper surface of the exhaust passage, a secondary insulation chamber formed adjacent to a rear surface of the breaker chamber, and having an opening in an upper upper surface thereof, and the secondary insulation It is installed on the front upper surface of the chamber, and is installed to be connected to the opening on the upper surface of the secondary insulation chamber adjacent to the rear side of the primary insulation chamber having a secondary outlet for gas discharge on the upper surface; It provides a closed switchgear including an exhaust chamber having a third discharge port for discharging gas on the upper surface. As a result, gas is quickly and smoothly discharged in each compartment, and a small size can obtain a closed switchboard having a small installation area.

In addition, the breaker room and the control room of the present invention is provided with a door for opening and closing in the front, the end of the both side plate corresponding to the door is bent in multiple stages, the side facing portion facing the door side and the rear facing portion facing the rear It provides a closed switchgear formed. As a result, the durability, the number of parts and the assembly are improved, and the lightweight switchgear can be additionally obtained.

In addition, the exhaust chamber of the present invention provides a closed switchboard having a partition wall detachably coupled to the front side to facilitate maintenance and replacement of the primary side insulation chamber, and a door for opening and closing the rear side. As a result, a closed switchgear with superior safety and easy maintenance can be obtained.

In the present invention having the above-mentioned means for solving the problem, the breaker chamber and the secondary insulation chamber are fixedly installed adjacent to each other on the upper surface of the base frame, and the control chamber, the primary insulation chamber and the exhaust chamber are disposed on the upper surfaces of the breaker chamber and the secondary insulation chamber. It is detachable in a layered structure and forms a hexahedral enclosure as a whole, and gas outlets are provided for each independent compartment so that the exterior is beautiful and the installation area can be greatly reduced. In addition, it can effectively prevent the damage of internal parts by quickly and smoothly discharging gas of high temperature and high pressure while effectively preventing the spread to the equipment.In addition, if the compartment in which an accident occurred is required to be replaced, only the compartment must be removed and replaced. The cost of maintenance and replacement can be reduced.

In addition, since the compartments separating and shielding the primary and secondary busbars and various devices are stacked in an optimal form and combination, the distance between phases of the primary and secondary busbars can be minimized. It is very advantageous to reduce unnecessary size, and it can reduce the installation space. In addition, the operator can easily and easily operate and replace the high voltage equipment through the door of the compartment during electrical safety inspection or maintenance management. The convenience of work can be increased and work efficiency and safety can be improved by relieving psychological anxiety, such as dread of electrical accidents.

In addition, since the present invention is formed as a side facing portion facing the side of the door and the rear facing portion facing the rear side by bending in multiple stages so as to correspond to the door both side plate end of each compartment for mounting the door when assembling as in the prior art There is no need for a separate holding frame or welding work, which can reduce labor and improve assembly performance due to durability and reduced number of parts.

1 is a perspective view showing a closed switchboard according to an embodiment of the present invention;
2 is an exploded perspective view of FIG. 1;
3 is a perspective view showing a state in which a part of the closed switchboard is removed according to an embodiment of the present invention;
Figure 4 is a plan sectional view showing the main part of the closed switchboard according to an embodiment of the present invention,

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Prior to this, terms to be described below are defined in consideration of functions in the present invention, and it should be understood that they should be interpreted as meanings commonly used in the technical field and concept corresponding to the technical idea of the present invention.

In addition, when it is determined that the detailed description of known functions or configurations related to the present invention may obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a perspective view showing a closed switchboard according to an embodiment of the present invention, Figure 2 is an exploded perspective view of Figure 1, Figure 3 is a perspective view showing a state of removing a part of the closed switchboard according to an embodiment of the present invention, As shown in FIGS. 1 to 3, the closed switchboard according to the embodiment of the present invention includes a breaker chamber 100, a control chamber 200, a secondary side insulation chamber 300, a primary side insulation chamber 400, and an exhaust chamber 500. It is configured to include).

First, the breaker chamber 100 delivers electricity whose characteristics are changed to the load through a breaker (CB) and a transformer to open or cut power transmitted from the primary busbar to the load through the secondary busbar or to prevent a short circuit. Various breakers and safety devices such as transformer current transformers, lightning arresters, and fuses are slidably moved forward by the rail device, and the circuit breakers (CB) and the control chamber 200 are provided on both sides of the hexahedral enclosure shape having the upper surface opened. The control line protection wall 110 is formed to protect the control line connecting the control devices such as the controller of the outside to the outside, the front door of the opening-type door (D) having a locking device form It is installed.

Here, the circuit breaker built in the circuit breaker chamber 100 and the primary and secondary busbars built in the primary side and secondary side insulation chambers 400 and 300 are the primary side and secondary side contacts (disconnector, terminal) of the circuit breaker (CB) during assembly. Is exposed to the outside through a hole formed in the rear of the circuit breaker chamber 100 and electrically insulated and protected by a connection with the bushing B mounted through the front surfaces of the primary and secondary insulation chambers 400 and 300, respectively. In this case, the bushing B used at this time is electrically connected to the primary side and secondary side busbars or cables, and is formed of a material having excellent electrical and mechanical durability.

The control room 200 is a controller that senses a voltage and controls the breaker of the breaker room 100 as a whole to be protected from high voltage, etc., and is formed in the shape of a hexahedral enclosure having the same front, rear, left and right widths as the breaker room 100. It is firmly installed by a coupling member such as a bolt and a nut in a state seated on the upper surface of the 100, and the inside is divided into partitions by a partition wall, so that various control devices are stored in the front and the breaker chamber in the rear. An exhaust passage 210 connected to the 100 is integrally formed.

And the upper surface of the exhaust passage 210 is provided with a first discharge port 250 for discharging the gas, the front door of the opening type door (D) for opening and closing the inside is provided in the form having a locking device. .

The secondary side insulation chamber 300 includes various secondary side connection devices such as secondary side busbars, cables, and insulators, and has the same width as that of the circuit breaker chamber 100 and the width of both sides, and the height of the circuit breaker chamber 100. Opening 310 is formed on the rear upper surface in the shape of a hexahedral housing having a low height, the opening and closing door (D) for opening and closing the inside is installed in the form having a locking device, the breaker chamber 100 It is fixedly installed adjacent to the bottom of the rear.

Here, the secondary insulation chamber 300 and the circuit breaker chamber 100 are fixed to each other by using a coupling member such as bolts and nuts in a state of being seated on an upper surface of a separate base frame 600 while maintaining a firmly coupled state with each other. It is possible to maintain a stable state spaced from the floor of the place.

The primary side insulation chamber 400 is a three-phase primary side bus bar for receiving a high-voltage current supplied from the outside, and various primary side connection devices such as insulation bushings, insulators, surge absorbers, and the like. It has a width equal to the width of both sides of the 300 and a width slightly narrower than the front and rear width of the secondary insulation chamber 300, the rear side is formed in the shape of a hexahedral enclosure, which is mounted on the front upper surface of the secondary insulation chamber 300 It is firmly installed by a coupling member such as a furnace bolt and a nut, and a second discharge port 450 for discharging the gas is provided on the upper surface.

Here, the primary busbar built in the primary side insulating chamber 400 may maintain safety spaced apart from the enclosure of the primary side insulating chamber 400 by a insulator at a predetermined interval.

In addition, the primary busbar is electrically connected to a power source supplied from the outside in a protected state by the bushing B mounted through the hole formed in the side surface of the primary insulation chamber 400.

The exhaust chamber 500 is connected to the opening 210 of the secondary insulation chamber 300 to communicate with each other. The exhaust chamber 500 has the same height and width as that of the secondary insulation chamber 300 and the width of both sides, and the front and rear surfaces thereof are opened. Formed in the shape of a hexahedron enclosure and adjacent to the rear surface of the primary insulation chamber 400 and seated on the rear upper surface of the secondary insulation chamber 300. It is fixed to be connected to, and the upper surface is provided with a third discharge port 550 for discharging the gas, the rear door is a door-type door (D) for opening and closing the inside is provided in the form having a locking device.

In addition, on the opened front surface of the exhaust chamber 500, a barrier wall 510 for easy operation during maintenance and replacement of the primary insulation chamber 400 may be detachable by a coupling member such as a bolt or a nut. Are combined.

That is, by opening the door (D) installed on the rear of the exhaust chamber 500 and by separating the blocking wall 510 coupled to the front of the exhaust chamber can open the interior of the primary insulation chamber 400, through this 1 For example, the primary side bus bar, insulator, etc., which are built in the vehicle side insulation chamber 400, may be easily and easily repaired.

The upper surfaces of the control chamber 200, the primary side insulating chamber 400, and the exhaust chamber 500 are integrally formed on one plate, and the first to third discharge ports 250, 450, and 550 are sequentially formed on the plate. In addition, by combining the control chamber 200, the primary side insulating chamber 400 and the exhaust chamber 500 on the bottom surface, it is of course possible to reduce the number of parts, ease of assembly and convenience.

In addition, the first to third outlets 250, 450, and 550 are provided on the upper surface of the control chamber 200, the primary side insulation chamber 400, and the exhaust chamber 500 to prevent water or various foreign substances from entering the interior of the enclosure. It is preferable to form a vertical wall surface having a vertical shape with respect to the vertical wall surface, and to form a plurality of vent holes through which gas is discharged forward.

Meanwhile, as shown in FIG. 4, the front doors of the breaker chamber 100 and the control chamber 200, and the doors D respectively provided on the rear side of the secondary insulation chamber 300 and the exhaust chamber 500 respectively, respectively. The sides of the side plate end is formed in the form of a panel frame (P) formed by bending in multiple stages, the side facing portion (SP) facing the side of the door and the rear facing portion (RP) facing the rear of the door.

That is, the end of the metal plate body is turned over in a direction of 180 degrees with a predetermined width, and at this time, the opposing surfaces are bent to abut each other to form a side facing portion SP, and at the end of the side facing portion SP Bend vertically in a 90-degree direction with a certain width to form a rear facing portion (RP), and bend vertically in a -90-degree direction with a certain width at the end of the rear-facing portion (RP) to the panel frame (P). Can be formed.

The breaker chamber 100, the control chamber 200, the secondary insulation chamber 300, and the exhaust chamber 500 may have a side facing portion SP facing only the side of the door and a rear surface facing the rear of the door. It is provided in the form of a panel frame (P) formed with an opposing portion (RP), it can be used in the form of a strut frame on the surface on which the door (D) is installed, and the side plate in the form of a plate can be coupled to the strut frame, the door ( Of course, it can also be used as a holding frame corresponding to the upper and lower parts of D).

Each side plate formed with the side facing part SP and the rear facing part RP is provided in the form of a single panel frame P, and requires a separate holding frame or welding work when assembling each compartment into the enclosure. This saves labor and improves assembly performance due to durability and reduced number of parts. It also prevents smoke generated during a fire from flowing through assembly gaps or gaps in connecting parts. This prevents the door (D) from being attached to the enclosure more tightly and stably.

The closed switchboard according to the embodiment of the present invention is a gas such as steam or smoke of high temperature and high pressure due to an accident involving an arc or flashover of the power system in the breaker chamber 100 and the primary and secondary insulation chambers 400 and 300. Is generated, it is quickly and smoothly discharged to the outside through the exhaust passage 210 and the exhaust chamber 500 and the first to third outlets 250, 450, and 550 connected to each other, thereby minimizing damage to internal peripherals or circuits by gas. It is possible to prevent the gas generated separately from one compartment from spreading to another adjacent compartment, leading to a secondary accident.

In addition, the breaker chamber 100, the control chamber 200, the primary side and secondary side insulation chambers 400 and 300, and the exhaust chamber 500 are each formed in an independent structure to separate and shield the primary side and secondary side busbars and the equipment. While the stack is laminated in an optimal combination, the phase distance between the primary and secondary busbars built in the primary and secondary insulation chambers 400 and 300 can be safely set to the shortest distance. It is possible to significantly improve the space efficiency of the installation place accordingly.

Furthermore, the unit panel panel P formed by bending both side plates of each compartment to which the door D is mounted is formed by bending a side facing part SP facing the side of the door and a rear facing part RP facing the rear at the end. Because it is provided in the form of), the durability of the closed switchgear is excellent and can be achieved at the same time, as well as to reduce the workmanship such as welding work and minimize the defects caused by the work, thereby improving the production efficiency.

On the other hand, the present invention is not limited to the above-described embodiment and the accompanying drawings, it is possible to change to other embodiments equivalent to substitutions and equivalents within the scope without departing from the technical spirit of the present invention usually in the art. It will be evident to those who have knowledge of.

100: breaker room
110: control line protective wall
200: control room
210: exhaust passage
250: first outlet
300: secondary insulation chamber
310: opening
400: primary insulation chamber
450: second outlet
500: exhaust chamber
510: barrier wall
550: third outlet
D: door
P: panel frame
SP: side facing part
RP: rear facing part
B: bushing
CB: Breaker

Claims (3)

A breaker chamber 100 having an upper surface opening and control line protection walls 110 formed at both sides thereof, and an exhaust passage 210 installed at an upper surface of the breaker chamber 100 and connected to the breaker chamber 100 therein are formed. In addition, the upper surface of the exhaust passage 210 is provided with a control chamber 200 provided with a first discharge port 250 for discharging gas, and adjacent to the rear surface of the breaker chamber 100, the opening 310 is formed on the rear upper surface The primary side insulation chamber 400 and the primary side insulation chamber 300 are installed on the front upper surface of the secondary side insulation chamber 300 and have a second outlet 450 for discharging gas on the upper side thereof. It is installed adjacent to the rear of the chamber 400 and connected to the upper opening 310 of the secondary insulating chamber 300 and includes an exhaust chamber 500 having a third discharge port 550 for discharging gas on the upper surface ,
The front and rear doors of the breaker chamber 100 and the control chamber 200 and the rear side of the secondary insulation chamber 300 and the exhaust chamber 500 are provided with a door D for opening and closing, respectively. Both side plates of the breaker chamber 100 and the control chamber 200 corresponding to each other, and end portions of both side plates of the secondary insulation chamber 300 and the exhaust chamber 500 are bent in multiple stages to form the side surfaces of the door D. Closed switchboard, characterized in that the side facing portion (SP) and the rear facing portion (RP) facing the rear of the door (D) is formed.
delete The method of claim 1,
The exhaust chamber 500 is a closed switchboard, characterized in that the barrier wall 510 is detachably coupled to the front to facilitate maintenance and replacement of the primary side insulating chamber 400.

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