KR101016764B1 - Medium voltage switchgear for using pipe type busbar and air blower - Google Patents

Abstract

PURPOSE: A medium voltage switchgear using pipe busbar and air blower are provided to cool down the heat temperature due to the amount of used current by enforcing the suction or ventilation of the heat. CONSTITUTION: A first busbar(310) takes the form of cylinder having a hollow inside the busbar. One end of a first busbar(310) is directly connected to the main circuit breaker or the branch blocker. A second busbar(320) extends in a direction perpendicular to the first busbar. One side of the second busbar comprises a suction blower(500) or a ventilation blower(500).

Description

Switchgear using blower and cylindrical busbar {MEDIUM VOLTAGE SWITCHGEAR FOR USING PIPE TYPE BUSBAR AND AIR BlOWER}

The present invention relates to a switchgear using a blower and a cylindrical bus bar, and more particularly, to a switchgear using a blower and a cylindrical bus bar that can effectively lower the temperature of the bus bar to increase the temperature according to the current usage to further improve the allowable current and durability will be.

In general, the switchgear is a device for safely supplying current by converting the power supplied from the power supply source into a suitable low power suitable for the rating of various equipment and equipment.

The switchgear is largely composed of a bus bar which electrically connects the main breaker and the branch breaker installed inside the case, and the main breaker and the branch breaker to be installed.

The busbar is a generic term for long metal products used in place of power cables, and these busbars have a greater heat dissipation effect than the cables, and the surface area of the busbars can reduce the impedance of high-frequency current flowing on the surface of the conductor. Is more advantageous than large high speed systems.

The busbars are divided into a plate shape made of a rectangular bar structure according to the shape of the exterior, and a cylinder made of a concentric pipe structure.

However, the bus bar installed in the switchgear according to the prior art generates heat in itself in response to the overcurrent according to the increase in the current on the consumer side. At this time, if the overcurrent flows for more than a certain time, the bus bar is overheated, so that a power loss occurs, the conductivity is largely unstable, the voltage is unstable and easily deformed, and in the severe case, the bus bar itself is melted to cut off the power supply. .

Furthermore, the heat generated from the busbars raises the inside of the switchgear to a predetermined temperature or more, thereby greatly reducing the operation efficiency of other various components and devices.

The present invention has been made to solve the above problems, the object of the present invention is to lower the temperature of the bus bar to increase the temperature according to the current consumption efficiently blower and cylindrical booth that can further improve the allowable current and durability It is to provide water distribution using a bar.

In addition, another object of the present invention is to provide a water distribution using a blower and a cylindrical bus bar that can maintain the inside of the switchboard at a proper state at all times.

Water distribution using the blower and the cylindrical busbar according to the present invention to achieve the above object,

In the switchgear with the main breaker, branch breaker and busbar installed in the case,

The bus bar is formed of a cylindrical portion having a predetermined hollow portion therein, and a first bus bar having one end directly connected to the main breaker or branch breaker;

The second busbar is disposed at the other end of the first busbar and extends in a direction orthogonal to the first busbar.

One side of the second bus bar is characterized in that the suction blower for inhaling the internal heat that is overheated in communication with the hollow portion or the blower for blowing and exhausting is installed.

In addition, a suction blower or a blower blower may be additionally installed at the other side of the second bus bar.

On the other hand, the suction blower,

With suction fan,

An air circulation passage having one end connected to the suction fan and forming a branch pipe for communication with the hollow portion of the second bus bar;

Characterized in that it consists of an insulating pipe interposed between the air circulation cylinder and the second bus bar.

In addition, the blower is

Blower fan,

An air circulation passage having one end connected to the blowing fan and having a branch pipe for communication so as to communicate with the hollow portion of the second bus bar;

Characterized in that it consists of an insulating pipe interposed between the air circulation cylinder and the second bus bar.

In addition, the outer upper portion of the case is characterized in that the auxiliary case for protecting in the state in which the suction blower or the blower blower is formed.

And, the case is characterized in that the busbar support for fixing in the state wrapped around the outer circumferential surface of the second busbar.

In addition, the busbar support may be divided into a first coupling portion and a second coupling portion detachably in the up and down directions based on the second busbar.

In addition, the case is characterized in that a control control unit for measuring the amount of current supplied from the main breaker and the temperature of the second busbar, respectively.

In addition, the control control unit,

A current transformer for sensing an energizing current of the first bus bar connected to the main breaker;

A temperature sensor connected directly or indirectly to the second busbar to measure temperature;

It has a display for displaying the measured value of the current transformer and the temperature sensor, it characterized in that the control unit for adjusting the air flow amount from the suction blower and the blower blower according to the measured value.

In particular, the control control unit is characterized in that connected to the external microcomputer.

The connector may include a connection member configured to closely communicate the hollow portion of the first busbar and the second busbar.

According to the present invention, at the end of the second busbar, a suction blower for sucking the internal heat that is overheated by communicating with the hollow part or a blower for forcibly blowing the air is installed, whereby the temperature of the busbar generated by the current consumption is increased. Cooling can be efficiently carried out, thereby fundamentally blocking the loss of power, thereby increasing the allowable current of the busbar, and preventing the busbar from being deformed or cut off due to overheating. It works.

In addition, there is an effect of preventing the internal temperature of the switchgear from rising by the suction blower or the blower blower.

In addition, the control control unit is installed inside the case, there is an advantage that can efficiently control the operation of the suction fan and the blowing fan according to the rising temperature of the bus bar.

In addition, the control control unit can be connected to the external microcomputer and wired, wireless, so that the administrator can monitor the current state and temperature status of the current flowing through the busbar in real time from the outside and the action can be easily performed accordingly. There is an advantage.

1 is a perspective view showing a switchgear using a blower and a cylindrical busbar according to the present invention.
FIG. 2 is an enlarged perspective view schematically showing the internal structure of the case of FIG. 1.
3 is a perspective view showing the configuration of a switchgear using the blower and the cylindrical busbar of FIG.
4 is an exploded perspective view of FIG. 3.
5 is an exploded perspective view showing the structure of the connector of FIG.
6 is an exploded perspective view showing another structure of the connector of FIG. 3.

Hereinafter, with reference to the accompanying Figures 1 to 6 will be described in detail a preferred embodiment of the present invention.

1 to 4, the switchboard 1000 according to the present invention includes a case 100, a main breaker 200a and a branch breaker 200b installed in the case 100, and the main breaker. A bus bar 300 having a first bus bar 310 and a second bus bar 320 connecting the 200a and the branch breaker 200b, and the first bus bar 310 and the second bus bar. Or a connector 400 for interconnecting the second bus bar 320 and the second bus bar 320 and a suction blower 500 installed at one side and the other side of the second bus bar 320, respectively. And a blower 600 for blowing.

First, as shown in FIGS. 1 and 2, the case 100 is formed in a rectangular box shape and has a predetermined space portion therein, and on one side of the exterior to control the space portion to be opened and closed. The door 101 is formed.

In addition, the main circuit breaker 200a opens and closes power supplied from an external transformer and automatically cuts off when an abnormality such as an overload and disconnection occurs, and the branch circuit breaker 200b is electrically connected to the main circuit breaker 200a. It sends the power supplied from the load side.

The case 100, the main circuit breaker 200a and the branch circuit breaker 200b are well-known components that are equally applicable in the art of a switchgear, and a detailed description thereof will be omitted.

On the other hand, the busbar 300 is to electrically connect the main breaker (200a) and branch breaker (200b), where the busbar 300 is a cylindrical having a predetermined hollow portion 301 therein. The second bus bar 320 having one end connected to the main breaker 200a and the second bus bar 320 disposed at the other end of the first bus bar 310 and extending in a direction orthogonal to each other. It consists of.

For reference, the first bus bar 310 is to limit the name of the main line directly connected to the main breaker (200a) or branch breaker (200b) to the first busbar 310 for convenience of description, the main The busbars of the tracks branching from the line are referred to as second busbars 320.

Accordingly, the names of the busbars are divided into the first busbar and the second busbar for convenience of description, but the descriptions are for convenience of description and do not specifically limit the name. It can be changed.

In addition, the connection structure of the busbar is also just one embodiment for easily explaining the technical idea of the present invention, it is not necessarily limited to this, it is natural that the connection to the various structures according to the internal structure, size and design requirements of the switchgear case.

As shown in FIGS. 3 and 4, the first busbar 310 has the other end facing the second busbar 320 in a state where one end is connected to the main breaker 200a or the branch breaker 200b. It is made of a substantially 'b' shaped structure to be bent, the second bus bar 320 is extended in the direction orthogonal to the bent end of the first bus bar 310 and electrically connected.

In addition, the connector 400 may serve to firmly connect the first bus bar 310, the second bus bar 320, or the second bus bar 320 and the second bus bar 320 to each other. In addition, it provides a function to allow smooth air communication according to the action of the suction blower 500 or the blower 600 to be described later.

5 and 6, the connector 400 is formed in a substantially 'T' shape when the first bus bar 310 and the second bus bar 320 are disposed in a direction perpendicular to each other. When coupled to each other, the second busbars 320 extending in the horizontal direction are formed in a substantially '-' shape.

In particular, a connection member 410 is formed inside the connector 400 to closely communicate the hollow portion 301 of the first bus bar 310 or the second bus bar 320.

The connection member 410 is preferably coupled to the screw fastening structure for each end of the first busbar 310 or the second busbar 320, but is not necessarily limited to this structure to be slide-fitted mutually It can be formed as.

Meanwhile, as shown in FIGS. 2 to 4, one side and the other side of the second bus bar 320 communicate with the hollow part 301 to suck or heat the internal heat that is overheated, and the suction blower 500 when Blowing blowers 600 are respectively installed.

The suction blower 500 has a suction fan 510 disposed at one side of the second bus bar 320 and one end connected to the suction fan 510, and a hollow part of the second bus bar 320. The air circulation cylinder 520 having the communication branch pipe 521 is formed to communicate with the 301, and the insulating pipe 530 interposed between the air circulation cylinder 520 and the second bus bar 320. do.

That is, when the use of current on the consumer side increases, the second bus bar 320 according to the heat is generated by the overcurrent, and the suction fan 510 operates to suck internal heat of the hollow part 301. By discharging to the outside, not only can the temperature of the second bus bar 320 be effectively lowered, but also the internal temperature of the case 100 can be prevented from rising, thereby increasing the operational efficiency of other various components and devices. There is an effect that can be prevented from falling.

In addition, the blower 600 for blowing is connected to the blowing fan 610 disposed on the other side of the second bus bar 320 and one end of the blowing fan 610, the second bus bar 320 An air circulation cylinder 620 in which a communication branch pipe 621 is formed to communicate with the hollow portion 301, and an insulation pipe 630 interposed between the air circulation cylinder 620 and the second bus bar 320. It consists of.

Similarly, when the current usage of the consumer side increases, the second bus bar 320 according to the current draws heat from the hollow part 301 of the second bus bar 320 when heat is generated by overcurrent. Since the suction fan 510 and the blowing fan 610 forcibly sucking outside air and exhausting the air to the hollow part 301 may lower the heat of the second bus bar 320 more quickly, By greatly improving the self-efficiency of 300, it is possible to prevent the power loss and to prevent the bus bar 300 from being deformed or cut off of the power supply due to the overload.

Meanwhile, an auxiliary case 100a is additionally formed on the outer upper portion of the case 100 in a state in which the components of the suction blower 500 and the blower blower 600 are separately accommodated.

In addition, a bus bar support 700 is installed inside the case 100 to fix the outer circumferential surface of the second bus bar 320 in a wrapped state.

The busbar support 700 is spaced apart a plurality of at a predetermined interval along the longitudinal direction of the second busbar 320.

The busbar support 700 has a structure in which the first coupling part 710 and the second coupling part 720 are detachably detachable in the up and down directions based on the second bus bar 320. (See Figure 4).

In addition, a control control unit 800 is installed in the case 100 to measure the amount of current supplied from the main breaker 200a and the heating temperature of the second bus bar 320, respectively.

The control and control unit 800 is directly or indirectly connected to the current transformer 810 for sensing the energizing current of the first bus bar 310 connected to the main circuit breaker 200a and the second bus bar 320. It has a temperature sensor 820 for measuring the temperature, and a display 831 to display the measured value of the current transformer 810 and the temperature sensor 820 and the suction fan 510 and the blowing fan 610 according to the measured value Control unit 830 for adjusting the air volume of the).

In this case, the temperature sensor 820 may be disposed on the upper surface of the busbar support 700.

The controller 830 regulates rotation values of the suction fan 510 and the blowing fan 610 according to the amount of current supplied to the first bus bar 310 and the temperature of the second bus bar 320. Program the database.

The rotation value regulation of the suction fan 510 and the blower fan 610 is well known in the art that can control its speed by PWM control, frequency control, etc., and thus, detailed description thereof will be omitted.

In addition, the control controller 800 is connected to the external microcomputer 900 and the administrator can be manually operated through wired and wireless communication.

According to the present invention configured as described above, the blower blower 600 for forced blowing or the suction blower 500 to suck the internal heat that is overheated in communication with the hollow portion 301 at the end of the second bus bar 320 By installing the, it is possible to efficiently cool the temperature of the bus bar 300 that generates heat by the current consumption, and by blocking the power loss accordingly can not only increase the allowable current amount of the bus bar 300, Due to overheating, the bus bar 300 may be thermally deformed or the power supply may be blocked.

In addition, there is an effect of preventing the internal temperature of the switchboard from being increased by the suction blower 500 or the blower blower 600.

In addition, since the control control unit 800 is installed inside the case 100, the operation of the suction fan 510 and the blowing fan 610 can be efficiently controlled according to the rising temperature of the bus bar 300. There is an advantage.

In addition, the control control unit 800 can be connected to the external microcomputer and wired, wireless, so that the administrator can monitor the current state and temperature status information supplied to the busbar 300 in real time from the outside in accordance with the action There is an advantage that can be easily achieved.

100: case
200a: main breaker
200b: branch breaker
300: busbar
310: first busbar
320: second busbar
400: connector
410: connecting member
500: suction blower
600: blower
700 busbar support
800 control unit

Claims (12)

In the switchgear with the main breaker, branch breaker and busbar installed in the case,
The bus bar is formed of a cylindrical portion having a predetermined hollow portion therein, and a first bus bar having one end directly connected to the main breaker or branch breaker;
The second busbar is disposed at the other end of the first busbar and extends in a direction orthogonal to the first busbar.
A switchgear using a blower and a cylindrical bus bar on one side of the second bus bar, a suction blower for inhaling internal heat that is overheated by communicating with the hollow part or a blower for blowing and exhausting air is installed.
The method of claim 1,
A switchgear using a blower and a cylindrical busbar, wherein the suction blower or the blower blower is additionally installed at the other side of the second busbar.
The method of claim 1,
The switchgear using a blower and a cylindrical busbar, characterized in that further comprising a connector for interconnecting the first busbar and the second busbar or the second busbar and the second busbar.
The method of claim 1,
The suction blower,
With suction fan,
An air circulation passage having one end connected to the suction fan and forming a branch pipe for communication with the hollow portion of the second bus bar;
Switchgear using a blower and a cylindrical bus bar, characterized in that composed of an insulating pipe interposed between the air circulation cylinder and the second bus bar.
The method of claim 1,
The blower for the blowing,
Blower fan,
An air circulation passage having one end connected to the blowing fan and having a branch pipe for communication so as to communicate with the hollow portion of the second bus bar;
Switchgear using a blower and a cylindrical bus bar, characterized in that composed of an insulating pipe interposed between the air circulation cylinder and the second bus bar.
The method of claim 1,
The switchgear using a blower and a cylindrical bus bar, characterized in that the outer upper portion of the case is formed in the auxiliary case to protect the suction blower or blower blower in a state of receiving.
The method of claim 1,
The case switchgear using a blower and a cylindrical busbar, characterized in that the busbar support for fixing in the state wrapped around the outer circumferential surface of the second busbar.
The method of claim 7, wherein
The busbar support is a switchgear using a blower and a cylindrical busbar, characterized in that divided into a first coupling portion and a second coupling portion detachably in the up, down direction based on the second busbar.
The method according to any one of claims 1 to 8,
The switchgear using the blower and the cylindrical bus bar, characterized in that the control unit for measuring the amount of current supplied from the main circuit breaker and the temperature of the second bus bar, respectively installed in the case.
10. The method of claim 9,
The control control unit,
A current transformer for sensing an energizing current of the first bus bar connected to the main breaker;
A temperature sensor connected directly or indirectly to the second busbar to measure temperature;
And a display panel for displaying the measured values of the current transformer and the temperature sensor, wherein the blower and the cylindrical bus bar are configured with a control unit for respectively controlling the air volume from the suction blower and the blower blower according to the measured value.
10. The method of claim 9,
The control panel is a switchgear using a blower and a cylindrical bus bar, characterized in that connected to the external microcomputer.
The method according to any one of claims 1 to 8,
A switchgear using a blower and a cylindrical bus bar, wherein the connector includes a connection member for closely communicating the hollow portion of the first bus bar and the second bus bar.

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