KR20150038890A - Outside air introducing apparatus in Motor Control Center - Google Patents

Abstract

The present invention relates to a device for introducing outside air into an MCC. The device for introducing outside air into an MCC comprises: a main body (100) having an electronic device installed in the sealed inner space thereof; an air blower (200) provided inside the main body (100); an air inlet (300) provided on one side of the main body (100) to introduce air into the main body (100) according to the operation of the air blower (200); an air outlet (400) provided on the other side of the main body (100) to discharge air to the outside of the main body (100) according to the operation of the air blower (200); opening and closing dampers (320, 420) respectively installed in the air inlet (300) and the air outlet (400) to open and close the inside according to electrical operations; a temperature display unit (520) to display a temperature inside the main body (100); a humidity display unit (540) to display humidity inside the main body (100); and a control unit (500) to maintain an internal temperature at an appropriate temperature by controlling the air blower (200) and the opening and closing dampers (320, 420) through the sensing values of the temperature and humidity display units (520, 540). The device of the present invention can maintain the temperature and humidity of the inner space of the main body by introducing outside air into the inner space of the main body when temperature and humidity conditions required for the inside of the main body forming an MCC correspond to the temperature and humidity of the outside air.

Description

{Outside air introducing apparatus in Motor Control Center}

The present invention relates to a system and method for controlling temperature and humidity in an MCC such that the temperature and humidity in the MCC can be maintained at an appropriate temperature. More specifically, The present invention relates to an outside air introducing device in an MCC that not only blocks outside air but also effectively suppresses fire when a fire occurs in the MCC.

Generally, electric power facilities refer to facilities and devices that supply electric power from a power plant to each household or industry. The process in which electric power is transmitted from a power plant to a general household is usually a power plant, a primary substation, a secondary substation, , Water generators, transformers, distribution boards, distribution boards, meter boxes, household distribution boards, and switches.

The water reception panel and the switchboard are devices used for monitoring, controlling and protecting the power system, and means a collection of unit devices, supporting structures, and wires connecting the same. Accordingly, the above-mentioned switchgear may include an extra high voltage, a high voltage, a low voltage, an MCC (Motor Control Center), and the like.

In addition, there is a risk of fire due to electric overheating due to over current, overload or short circuit in the switchgear. In order to prevent the occurrence of such a fire in a power and control panel, a thermal sensor, a smoke detector, and the like are mounted in a power and control panel, and a spray nozzle for spraying an extinguishing agent such as halon or carbon dioxide In fact.

In addition, there is a fire extinguishing device equipped with a fire extinguishing agent separately at the upper part of the switchgear. Such a fire extinguishing device is inconvenient to periodically check the pressure state of the extinguishing agent, the voltage of the applied driving power, have.

In addition, since the fire extinguishing system is installed at the upper end of the switchboard, it is not easy to confirm the voltage, and it is not easy to check the voltage of the driving power source of the fire extinguishing system and the temperature inside the switchboard must be measured with a thermometer .

In order to solve this problem, Document No. 1 No. 20-0399329 entitled "Automatic Extinguishing System for Switchboards"

This is an automatic fire extinguishing system for a water and switchboard, comprising: a pressure indicator for sensing and displaying a pressure of a fire extinguisher installed in the automatic fire extinguishing system; A voltage indicator for sensing and displaying a voltage of a power source applied to the motor for opening and closing the fire extinguisher; And a temperature indicator for sensing and displaying the temperature in the water / switchboard, wherein the pressure indicator, the voltage indicator, and the temperature indicator are respectively mounted on the front panel of the automatic fire extinguishing system and the front panel of the water distribution board .

However, in the case of the automatic fire extinguishing system described above, when a fire occurs inside the switchgear, it is extinguished and it can not prevent a fire.

Also, Patent Document No. 10-1089240 entitled "Switchboard with automatic spreading fire extinguisher" has been proposed as Document 2.

This is a technique for automatically suppressing the fire to prevent diffusion in the case of a fire in the inside of the switchboard, and the above technique is also used for safely extinguishing the fire, and the fire can not be prevented in advance.

In recent years, as in Document 3, Patent Publication No. 10-2012-01385643 "Switchboard management system and method" has been proposed.

This system comprises a power monitoring unit for monitoring the power of the equipment related to the power plant, an environment monitoring unit for monitoring the environment of the power plant related equipment, a status monitoring unit for monitoring the operation status of the power plant related equipment, A quality management unit for managing the operation quality of the equipment related to the switchboard and a mobile communication terminal interlocking unit for controlling interlocking with the mobile communication terminal for monitoring and controlling the equipment related to the switchboard,

In other words, it is a technology that can promptly notify the manager in the event of an abnormality such as a fire, an equipment failure, or a motor operation problem, and respond quickly to the occurrence of an equipment abnormality.

In other words, it is possible to perform more efficient management by monitoring and controlling the switchboard at a remote place using a smart phone.

However, even in the case of the above-mentioned switchboard management system, there is a fundamental problem in that it is not possible to prevent the abnormal phenomenon before the monitoring function and the abnormal phenomenon occur.

In addition, the MCC (Motor Control Center) consists of NFB, CT, M / C, ammeter, LAMP thermostat relay or EOCR and other relays and operation buttons. It has remote control switch, MCC operation switch and LOP (Local Operating Panel) operation switches, and the like.

Accordingly, there is no serious problem in motor control, power supply, or power cut-off operation. However, since there is no function of detecting an electric fault condition (contact failure and arc), for example, And there is a disadvantage in that it is impossible to prevent the occurrence of a large-sized fire due to occurrence of an electrical abnormality state in advance.

Documents: 1 Utility Model Registration No. 20-0399329. Automatic Switchgear Fire Extinguishing System October 25, 2005 Announcement Document 2: Patent Registration No. 10-1089240 Automatic switchboard with automatic fire extinguisher Document 3: Patent Publication No. 10-2012-01385643 "Switchboard management system and method" December 26, 2012 disclosure

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art,

SUMMARY OF THE INVENTION [0006]

first; It is possible to allow the outside air to flow into the MCC and maintain the inside temperature of the MCC at an appropriate temperature through the inflow air.

second; Temperature and humidity sensors and a control unit so as to be automatically controlled to have appropriate conditions.

third; In case of fire inside the MCC, it is possible to extinguish the air by interrupting the supply and discharge of air through the damper of the air inlet and the outlet when the fire extinguisher operates.

fourth; If the temperature and humidity of the outside air do not satisfy the proper conditions required in the interior space of the main body, the temperature and humidity conditions are maintained through the separate air conditioner.

In order to achieve the above object,

The present invention

In the MCC,

An air inlet provided at one side of the main body and allowing air to flow into the main body according to the operation of the blower; An opening and closing damper installed in the air inlet and the air outlet so as to open and close the inside according to an electric operation; And a controller for controlling the blower and the opening / closing damper through the sensed value of the temperature and humidity display unit to maintain the internal temperature at an appropriate temperature through the outside air, .

It is preferable that the blower is installed at the air outlet.

It is preferable that a cooler for supplying cool air is further installed in the main body so that cool air can be supplied.

And a fire alarm unit for informing a fire alarm when a fire occurs inside the main body.

And a spray nozzle connected to the Halon fire extinguisher may be provided in the inner space of the main body so as to spray the halon in the fire area when a fire occurs.

According to the present invention, when the temperature and humidity conditions required in the main body of the MCC are matched with the temperature and humidity of the outside air, the air of the outside air flows into the inside space of the main body, As shown in Fig.

In addition, there is an effect that a fire can be prevented in advance by blocking the outside air when an abnormal phenomenon such as a fire occurs in an electric device in the main body.

In addition, when the air conditioner is installed in the main body, the air conditioner is operated only when the outdoor air temperature is high, thereby reducing the electricity cost and reducing the CO2.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a frontal incisional incision view showing an apparatus for introducing an outside air in an MCC according to the present invention;
Fig. 2 is a schematic view of the side incision of Fig. 1; Fig.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may obscure the subject matter of the present invention. do.

The present invention is intended to appropriately maintain the temperature and humidity conditions of the internal space of the main body using external air in order to maintain the internal space of the main body of the MCC to maintain the temperature and humidity required by the electrical apparatus.

1 and 2, a main body 100 having an electrical device installed in an internal space having a closed structure, a blower 200 provided inside the main body 100, An air inlet 300 provided at one side of the main body 100 to allow air to flow into the main body 100 according to the operation of the blower 200 and an air inlet 300 provided at the other side of the main body 100, And an opening / closing damper 320 (420) installed in the air inlet 300 and the air outlet 400 to open and close the inside of the main body 100 according to an electric operation, respectively, A temperature display unit 520 for displaying the temperature inside the main body 100 and a humidity display unit 540 for displaying the humidity inside the main body 100 and the temperature and humidity display units 520 and 540, And controls the blower 200 and the opening and closing dampers 320 and 420 through sensing values And a control unit 500 for maintaining the sub-temperature at an appropriate temperature through the outside air.

The main body 100 has an opening / closing door, and the internal space 120 is sealed and an electrical device is installed in the internal space 120.

The air inlet 300 is located at one side of the main body 100 and communicates with the outside. An opening / closing damper 320 is installed in the air inlet 300 so that the opening / closing damper 320 operates in accordance with an electrical operation to selectively block the inflow of air.

The air outlet 400 is located on the other side of the main body 100 and communicates with the outside. An opening / closing damper 420 is installed in the air outlet 400 so that the opening / closing damper 420 operates according to an electrical operation to selectively block the air discharge.

The opening / closing dampers 320 and 420 include a rotating plate to which a known technique can be applied and whose rim is in close contact with the air outlet 400 and the duct of the air inlet 300 and a motor for rotating the rotating plate in normal and reverse directions, The movement of the air is blocked.

In the electric blower 200, the motor rotates the fan to allow the external air to flow. The blower 200 is preferably installed at the air outlet 400.

The temperature display unit 520 includes a temperature sensor that senses an internal space 120 of the main body 100 and an external temperature and displays a signal value sensed by the temperature sensor. 500).

The humidity display unit 540 includes a humidity sensor that senses an internal space 120 and an external temperature of the main body 100. The humidity display unit 540 displays a signal value sensed by the humidity sensor, 500).

The control unit 500 controls various electrical devices installed in the internal space 120 of the main body 100 and operates the opening and closing dampers 320 and 420 according to the signal value of the temperature and humidity display unit do.

Meanwhile, a cooler 600 for supplying cool air may be installed in the outer or inner space of the main body 100, and the cooler 600 supplies cool air during power supply.

When the cooler 600 is installed outside the main body 100, the cool air supply nozzle 620 may be inserted into the inner space 120 of the main body 100.

A fire alarm unit 700 may be further provided to inform a fire alarm when a fire occurs in the internal space or outside of the main body 100. The fire alarm unit 700 informs the outside through an alarm sound .

The main body 100 is also provided with a halon extinguishing unit 800. The halon extinguishing unit 800 includes a fire extinguishing nozzle 820 in a fire area when a fire occurs in the internal space 120 of the main body 100 And a fire extinguishing nozzle 820 for supplying the halon from the body to the corresponding region.

The operation of the outdoor air introducing device in the MCC according to the present invention will now be described.

As shown in FIGS. 1 and 2, the temperature display unit 520 and the humidity display unit 540 sense the temperature of the inside and the outside of the main body 100, and output the signal value to the control unit 500. Then, the control unit 500 compares the memory value with the input signal value, and when the outdoor temperature is determined to be an appropriate temperature, the control unit 500 places the opening / closing damper 320 (420) in the open state and operates the blower 200. The outside air is introduced into the internal space 120 of the main body 100 through the air inlet 300 and the air introduced into the internal space 120 is discharged to the air outlet 400 again by the blower 200 do. Then, the internal space 120 of the main body 100 maintains the same conditions as the external temperature and humidity conditions.

When the outside air is hot or when an abnormal phenomenon such as a fire occurs in the internal space, the controller 500 detects the abnormal state and outputs the sensed result. Then, the controller 200 turns off the blower 200 and simultaneously opens and closes the open / close dampers 320 and 420 So that the internal space 120 of the main body 100 is blocked.

If the outside air is hot, the cooler 600 installed in the main body 100 operates to cool the inner space of the main body 100 through the cool air supply nozzle 620 120 can maintain the desired temperature.

Meanwhile, when a fire is generated in the internal space 120 of the main body 100 and the fire alarm unit 700 senses the fire, the alarm sound is notified to the outside or the halon fire extinguishing unit 800 is operated, And the molten metal is injected through the nozzle 820 to be extinguished.

100:
120: interior space
200: blower
300: Air inlet
400: Air outlet
500:
520: temperature display section 540: humidity display section
600: air conditioner
700: Fire alarm
800: Halon digestion

Claims (5)

In the MCC,
A main body having an electrical device installed in an internal space having a closed structure,
A blower provided in the main body,
An air inlet provided at one side of the main body to allow air to flow into the main body according to the operation of the blower,
An air outlet provided on the other side of the main body for discharging air to the outside of the main body according to the operation of the blower,
An opening / closing damper installed in each of the air inlet and the air outlet so as to open / close the inside according to an electric operation;
A temperature display unit for displaying a temperature inside the main body,
A humidity display section for displaying the humidity inside the main body,
And a control unit for controlling the blower and the opening / closing damper through a sensing value of the temperature and humidity display unit to maintain an internal temperature at an appropriate temperature through outside air.
The method according to claim 1,
Wherein the blower comprises:
And the air outlet is provided at the air outlet.
The method according to claim 1,
And an air conditioner for supplying cold air to the main body is further installed.
The method according to claim 1,
Further comprising a fire alarm unit for informing a fire alarm when a fire occurs inside the main body.
3. The method of claim 2,
The main body is provided with a halon fire extinguisher,
Wherein an injection nozzle connected to the halogen fire extinguishing unit is provided in the inner space of the main body so as to inject halon into a fire area when a fire occurs.

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