KR20160119584A - Circuit breaker - Google Patents

Circuit breaker Download PDF

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Publication number
KR20160119584A
KR20160119584A KR1020150048449A KR20150048449A KR20160119584A KR 20160119584 A KR20160119584 A KR 20160119584A KR 1020150048449 A KR1020150048449 A KR 1020150048449A KR 20150048449 A KR20150048449 A KR 20150048449A KR 20160119584 A KR20160119584 A KR 20160119584A
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KR
South Korea
Prior art keywords
unit
temperature
sensor
conductive
temperature measuring
Prior art date
Application number
KR1020150048449A
Other languages
Korean (ko)
Other versions
KR101701154B1 (en
Inventor
송민철
Original Assignee
현대중공업 주식회사
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Priority to KR1020150048449A priority Critical patent/KR101701154B1/en
Publication of KR20160119584A publication Critical patent/KR20160119584A/en
Application granted granted Critical
Publication of KR101701154B1 publication Critical patent/KR101701154B1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/10—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/025—Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

The circuit breaker according to the present invention includes a temperature measuring part, a sensor supporting part, a barrier rib, and the like so as to measure the temperature of the conductive part using an infrared ray sensor. Through such a configuration, reliability can be expected in measuring the temperature of the conductive part, and the overcurrent is prevented, thereby preventing the circuit breaker from being damaged.

Description

Circuit breaker. {CIRCUIT BREAKER}

The present invention relates to a circuit breaker that effectively prevents damage to a circuit breaker through an infrared sensor for measuring temperature.

A circuit breaker is an electrical switching device that cuts off an arc by using compressed air. It is a device that disconnects the connection of a line when a large current flows through the line to prevent current from flowing. The circuit breaker disconnects the connection of the line by separating the fixed contact and the movable contact, and blows out the arc generated when the connection of the line is disconnected by the compressed air. When a large current flows through the line, heat is generated. The circuit breaker can determine the overcurrent by measuring the temperature due to the generated heat.

Conventional circuit breakers use a thermistor thermometer to measure the temperature of the current-carrying part. Since the thermistor thermometer measures the temperature in the state that it is not in contact with the current-carrying part, in the case of the conventional circuit-breaker, there is an error in measuring the temperature of the current-carrying part.

Patent literature: Patent No. 0883042 B1

It is an object of the present invention to provide a circuit breaker designed to overcome the above-described problems, and capable of determining the overcurrent state by measuring the temperature of the current-carrying portion without contacting the current-carrying portion.

According to an aspect of the present invention, there is provided a circuit breaker comprising: a cradle; A base mold connected to the cradle; A conductive part that is seated on the base mold and constitutes a current carrying circuit; A sensor supporting part connected to the base mold and spaced apart from the conductive part; And a temperature measuring part mounted on the sensor supporting part and measuring infrared rays radiated from the conductive part, wherein a linear path is formed in which infrared rays radiated from the power transmitting part reach the temperature measuring part .

The temperature measuring unit may be located vertically above the power supply unit.

The sensor support unit may include a sensor seat on which the temperature measurement unit is mounted, and the temperature measurement unit may include an infrared sensor capable of adjusting the position of the sensor seat.

The temperature measuring unit may include a sensor frame; An infrared sensor connected to the sensor frame for measuring infrared rays radiated from the power supply unit; And a bar-shaped bar connected to the sensor frame, wherein the sensor support defines a plurality of holes through which the bar can pass, The horizontal position of the conductive part can be adjusted.

The circuit breaker according to an embodiment of the present invention includes a display unit for displaying a temperature measured by the temperature measuring unit 500. The display unit may be configured to set a reference temperature and to compare the reference temperature with the measured temperature Alarm alarm can be performed.

The circuit breaker according to an embodiment of the present invention may include a plurality of the current-passing parts, and the circuit breaker according to an embodiment of the present invention may include a plurality of current- And a barrier wall that shields the traveling infrared ray.

In addition, the partition may have a plate-like structure and traverse a path that leads to the temperature measuring unit where the infrared rays radiated from one point of the conductive unit are not vertically above the conductive unit.

The circuit breaker according to an embodiment of the present invention has the effect of preventing the circuit breaker from being damaged by measuring the actual temperature of the circuit breaker through the above configuration.

1 is a view showing a conventional circuit breaker.
2 is a perspective view of a circuit breaker in accordance with an embodiment of the present invention.
3 is a side cross-sectional view of a circuit breaker in accordance with an embodiment of the present invention.
4 is a view showing a partition located between the conductive parts according to an embodiment of the present invention.
5 illustrates a sensor support according to an embodiment of the present invention.
6 is a view showing a temperature measuring unit according to an embodiment of the present invention.
7 is a view illustrating a display unit according to an embodiment of the present invention.
8 is a flowchart illustrating an operation of the display unit according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, the embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. Further, the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art. The shape and size of elements in the drawings may be exaggerated for clarity.

FIG. 1 is a view showing a conventional circuit breaker, and FIG. 2 is a perspective view of a circuit breaker according to an embodiment of the present invention. FIG. 3 is a side cross-sectional view of a circuit breaker according to an embodiment of the present invention, FIG. 4 is a view showing a partitions positioned between the conductive parts according to an embodiment of the present invention, And Fig. FIG. 6 is a view showing a temperature measuring unit according to an embodiment of the present invention, FIG. 7 is a view illustrating a display unit according to an embodiment of the present invention, FIG. 8 is a flowchart illustrating an operation sequence of a display unit according to an embodiment of the present invention, Fig.

1, in a conventional circuit breaker 10, a thermistor for measuring a temperature is inserted into a sensor insertion hole 11 provided in a conventional circuit breaker 10. However, since the current does not come into direct contact with the conducting portion, the temperature of the conducting portion is not easily measured. If overcurrent flows through the current-carrying part, it can not be accurately measured and if the current is not blocked, the circuit-breaker may be damaged.

An embodiment of the present invention related to Fig. 2 will be described. Unlike the conventional circuit breaker 10 shown in FIG. 1, the circuit breaker 1 with an infrared ray according to an embodiment of the present invention uses an infrared sensor without using a thermistor thermometer. The air circuit breaker 1 having an infrared ray according to an embodiment of the present invention includes a cradle 100, a base mold 200, a current carrying part 300, a sensor supporting part 400 and a temperature measuring part 500 .

The base mold 200 is connected to the cradle 100 and the base mold 200 may be provided with a space in which the conductive unit 300 can be placed. A sensor supporting part 400 capable of supporting the temperature measuring part 500 is connected to the upper part of the base mold 200 and the sensor supporting part 400 is connected to the upper part of the base mold 200, And may be located between the cradles 100 located on both sides of the base mold 200.

As shown in FIG. 2, the temperature measuring unit 500 senses an infrared ray to measure the temperature of the infrared ray. The infrared ray radiated from the power supply unit 300 reaches the temperature measuring unit 500 The reliability can be expected in measuring the temperature of the power supply unit 300 because no obstacle can be caused.

As shown in FIG. 3, the infrared rays radiated from the power supply unit 300 can directly reach the temperature measuring unit 500. That is, a linear path may be formed in which the infrared ray radiated from the power supply unit 300 reaches the temperature measuring unit 500. The temperature measuring unit 500 may be positioned vertically above the power supply unit 300. In Fig. 3, the dotted arrows indicate the progress of the infrared rays radiated from the power supply unit 300. The sensor supporting part 400 can support the temperature measuring part 500 so that infrared rays radiated from the power supply part 300 can directly reach the temperature measuring part 500. [

An embodiment of the present invention related to Fig. 4 will be described. The infrared rays radiated from the power supply unit 300 can directly reach the temperature measuring unit 500. However, when a plurality of the power supply units 300 are formed, the source of the infrared rays reaching the temperature measuring unit 500 is But may not be limited to one power supply unit 300. In this case, the temperature measured by the temperature measuring unit 500 may have a problem with accuracy.

4, a circuit breaker 10 having an infrared ray according to an embodiment of the present invention includes barrier ribs 600 (see FIG. 4) positioned between neighboring power- ). That is, the barrier rib 600 shields the infrared rays radiated from the neighboring power supply unit 300, so that the temperature measuring unit 500 can measure the temperature of one power supply unit 300. The infrared rays shielded by the barrier ribs 600 are limited to the temperature measuring unit 500 which radiates from one point of the adjacent power supply unit 300 and is not positioned vertically above the power supply unit 300 do. Therefore, the barrier rib 600 may be formed so that the infrared ray radiated from one point of the power supply unit 300 passes through the path of the temperature measurement unit 500, which is not positioned vertically above the power supply unit 300, The temperature measuring unit 500 can measure the temperature of one of the power supply units 300. Here, the barrier rib 600 may have a plate-like structure, and may include an infrared ray shielding film for shielding infrared ray.

An embodiment of the present invention related to Fig. 5 will be described. As shown in FIG. 5, the sensor supporting part 400 may include a sensor seating part 410 and a hole 420. The sensor mounting part 410 may be formed in the shape of a hole in the sensor supporting part 400 and may provide a space in which the temperature measuring part 500 is seated. The holes 420 allow the temperature measuring unit 500 to be stably installed in the sensor seating unit 410.

That is, when the bar 530 or the protrusion passing through the hole 420 is provided in the temperature measuring unit 500, the bar 530 or the protrusion provided in the temperature measuring unit 500 is inserted into the hole 420, So that the temperature measuring unit 500 can be stably mounted on the sensor seating unit 410. Since the plurality of holes 420 may be formed in the sensor supporting part 400, the position where the temperature measuring part 500 is seated on the sensor supporting part 400 is determined by the position of the hole 530 through which the bar 530 is passed, May be changed according to the position of the display unit 420. The sensor mounting part 410 may be provided with a clearance space in the temperature measuring part 500 so that the position where the temperature measuring part 500 is seated according to the position of the hole 420 can be changed .

The horizontal position of the temperature measuring unit 500 can be changed according to the position of the hole 420 through which the bar 530 passes. 5, the position of the temperature measuring unit 500 may be changed in one direction (left / right direction) of the horizontal direction. However, depending on the arrangement of the holes 420 formed in the sensor supporting unit 400, The position of the temperature measuring part 500 can be changed not only in the right direction but also in the front / back direction.

An embodiment of the present invention related to Fig. 6 will be described. 6 is a view illustrating the temperature measuring unit 500. The temperature measuring unit 500 may include a sensor frame 510, an infrared ray sensor 520, and a bar 530. FIG. The infrared sensor 520 is connected to the sensor frame 510 to measure infrared rays radiated from the power supply unit 300. The bar 530 is connected to the sensor frame 510, As shown in FIG. The bar 530 passes through the hole 420 so that the temperature measuring part 500 can be stably mounted on the sensor supporting part 400. Here, the bar 530 may be formed in the form of a rod or in the form of a projection.

7 is a view showing the display unit 800. Fig. That is, the circuit breaker 10 having an infrared ray according to an embodiment of the present invention may include the display unit 800. That is, the display unit 800 can display the temperature inputted from the temperature measuring unit 500. [

On the other hand, when the temperature input from the temperature measuring unit 500 is equal to or higher than the reference temperature, it may be necessary to sound an alarm. FIG. 8 is a flowchart illustrating an operation of the display unit according to an embodiment of the present invention. As shown in FIG. 8, first, an alarm temperature, that is, a reference temperature is set. It is determined whether or not the temperature input from the temperature measuring unit 500 is higher than a set reference temperature, and then an alarm alarm is activated. When the alarm alarm is activated, the user can take appropriate measures for the circuit breaker 1. If the temperature input from the temperature measuring unit 500 is not higher than the set reference temperature, the temperature is measured again.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

1: Circuit breaker 10: Conventional circuit breaker
11: Sensor insertion hole 100: Cradle
200: base mold 300:
400: sensor supporting part 410: sensor seating part
420: hole 500: temperature measuring unit
510: Sensor frame 520: Infrared sensor
530: Bar 600:
800:

Claims (7)

Cradle;
A base mold connected to the cradle;
A conductive part that is seated on the base mold and constitutes a current carrying circuit;
A sensor support connected to the base mold and spaced apart from the conductive member; And
And a temperature measurement unit mounted on the sensor support unit for measuring infrared radiation radiated from the conductive unit,
Wherein a linear path is formed in which infrared rays radiated from the power supply unit reach the temperature measurement unit.
The method according to claim 1,
And the temperature measuring unit is located vertically above the power transmitting unit.
3. The method of claim 2,
Wherein the sensor supporting portion includes a sensor seating portion on which the temperature measuring portion is seated,
Wherein the temperature measuring unit is capable of adjusting a position in a horizontal direction in the sensor seating part.
The method of claim 3,
The temperature measuring unit includes:
Sensor frame;
An infrared sensor connected to the sensor frame for measuring infrared rays radiated from the power supply unit; And
And a rod-shaped bar connected to the sensor frame,
Wherein the sensor supporting portion forms a plurality of holes through which the bar passes,
Wherein the temperature measuring unit is capable of adjusting a horizontal position with respect to the conductive unit by adjusting a position of the bar passing through a hole formed in the sensor supporting unit.
5. The method according to any one of claims 2 to 4,
And a display unit for displaying a temperature measured by the temperature measuring unit,
Wherein the display unit sets the reference temperature and compares the reference temperature with the measured temperature to make an alarm alarm.
6. The method of claim 5,
A plurality of the conductive parts are provided,
And a barrier disposed between the neighboring conductive parts and shielding the infrared ray from the conductive part to the temperature measurement part which is not positioned vertically above the conductive part.
The method according to claim 6,
Wherein the partition wall has a plate-like structure and traverses a path that travels to the temperature measurement unit where infrared rays emitted from one point of the conductive unit are not positioned vertically above the conductive unit.
KR1020150048449A 2015-04-06 2015-04-06 Circuit breaker KR101701154B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150048449A KR101701154B1 (en) 2015-04-06 2015-04-06 Circuit breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150048449A KR101701154B1 (en) 2015-04-06 2015-04-06 Circuit breaker

Publications (2)

Publication Number Publication Date
KR20160119584A true KR20160119584A (en) 2016-10-14
KR101701154B1 KR101701154B1 (en) 2017-02-01

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200426692Y1 (en) * 2006-07-04 2006-09-19 (주)태성계전 Estimation system of insulation degradation for switchgear
KR101171723B1 (en) * 2012-03-07 2012-08-09 한선화 Temperature and humidity intelligent sensing unit of distributing board and system for intelligent sensing temperature and humidity and remote auto controlling of switchgear and automatic control panel
KR20130108885A (en) * 2012-03-26 2013-10-07 현대중공업 주식회사 Air circuit breaker for overheat diagnosis

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200426692Y1 (en) * 2006-07-04 2006-09-19 (주)태성계전 Estimation system of insulation degradation for switchgear
KR101171723B1 (en) * 2012-03-07 2012-08-09 한선화 Temperature and humidity intelligent sensing unit of distributing board and system for intelligent sensing temperature and humidity and remote auto controlling of switchgear and automatic control panel
KR20130108885A (en) * 2012-03-26 2013-10-07 현대중공업 주식회사 Air circuit breaker for overheat diagnosis

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