KR102636324B1 - Actuator for circuit breaker using thomson coil - Google Patents

Abstract

The present invention relates to an actuator for a circuit breaker using a Thompson coil, comprising a fixedly installed base plate, an intermediate support frame that is fixedly installed and spaced apart from the base plate, and an upper support frame that is fixedly installed and spaced apart from the middle support frame. and a Thompson coil for insertion fixedly installed on one side of the base plate facing the intermediate support frame, a Thompson coil for opening fixedly installed on the other side of the intermediate support frame facing the base plate, a Thompson coil for input and a Thompson coil for opening. It is located between the coils and is connected to a rebound plate that moves in the direction toward the closing Thompson coil or the opening Thompson coil by the repulsive force of the closing Thompson coil and the opening Thompson coil, and the rebound plate, and is connected to the middle support frame and the upper support. A bar-shaped mover that penetrates the frame, a moving electrode that is connected to the end of the mover and moves in a straight direction with the mover to contact or separate from the fixed electrode, and an input device that is fixedly installed on the lower side of the upper support frame. A permanent magnet for opening is fixedly installed on the upper surface of the permanent magnet and the upper support frame, a suction plate for insertion is located between the middle support frame and the permanent magnet for insertion and extends to the side of the mover, and a permanent magnet for insertion is located on the upper surface of the permanent magnet for opening. It includes an opening suction plate that is located and fixed to the side of the mover and extends to the side of the mover. When operating in the closing mode in which the moving electrode moves toward the fixed electrode and comes into contact with it, the insertion suction plate is moved to the side of the permanent magnet for insertion, and the insertion permanent magnet is moved to the side of the insertion permanent magnet. It is maintained in a state of being moved upward toward the closing permanent magnet by the magnetic force of the magnet, and when operating in the opening mode where the moving electrode is spaced apart from the fixed electrode, the opening suction plate is moved in the direction toward the opening permanent magnet. It is maintained in a state of being moved downward to the opening permanent magnet by the magnetic force, the opening mode operation time is faster than the closing mode operation time, the magnetic force of the opening permanent magnet is greater than the magnetic force of the closing permanent magnet, and the moving electrode is opened. If the distance traveled to change from mode to closing mode is d1, the distance between the closing permanent magnet and the closing suction plate in the opening mode is d2, and the distance between the opening suction plate and the opening permanent magnet in the closing mode is d4, It is characterized in that d1 < d2 and d1 < d4.

Description

Actuator for circuit breaker using Thompson coil {ACTUATOR FOR CIRCUIT BREAKER USING THOMSON COIL}

The present invention relates to an actuator for a circuit breaker using a Thompson coil, and more specifically, to an actuator for a circuit breaker using a Thompson coil that has a simple structure and can perform a stable blocking operation using a Thompson coil.

In general, actuators for circuit breakers using Thompson coils are key power devices for blocking load currents or fault currents in the power system. In order to drive an actuator for a circuit breaker using a Thompson coil, an actuator, which is a manipulator, is essentially installed.

The actuator used in the actuator for a circuit breaker using a Thompson coil is generally an electric spring type, and as the rating of the actuator for a circuit breaker using a Thompson coil increases, a greater operating force is required, so the hydraulic spring type is gradually being used.

The electric spring method and hydraulic spring method used in conventional actuators for circuit breakers using Thompson coils have a problem in that the operational reliability of actuators for circuit breakers using Thompson coils is reduced due to the large number of parts. Therefore, there is a need to improve this.

The background technology of the present invention is published in Republic of Korea Patent Publication No. 2015-0052646 (published on May 14, 2015, title of invention: circuit breaker).

The present invention was created to improve the above problems, and the purpose of the present invention is to provide an actuator for a circuit breaker using a Thompson coil that has a simple structure and can perform a stable blocking operation using a Thompson coil.

The actuator for a circuit breaker using a Thompson coil according to the present invention includes a fixedly installed base plate; An intermediate support frame fixedly installed and spaced apart from the base plate; an upper support frame fixedly installed and spaced apart from the middle support frame; An input Thompson coil fixedly installed on one side of the base plate facing the intermediate support frame; An open Thompson coil fixedly installed on the other side of the intermediate support frame facing the base plate; A repulsion plate located between the closing Thompson coil and the opening Thompson coil, and moving in a direction toward the closing Thompson coil or the opening Thompson coil by the repulsive force of the closing Thompson coil and the opening Thompson coil. ; a bar-shaped mover connected to the rebound plate and penetrating the middle support frame and the upper support frame; a moving electrode connected to an end of the mover and moving in a straight direction with the mover to contact or be spaced apart from a fixed electrode; A permanent magnet for input is fixedly installed on the lower side of the upper support frame; A permanent magnet for opening fixedly installed on the upper surface of the upper support frame; an insertion suction plate located between the intermediate support frame and the insertion permanent magnet and extending to a side of the mover; and an opening suction plate located on an upper part of the opening permanent magnet and fixed to a side of the mover and extending to a side of the mover. The input suction plate is moved toward the input permanent magnet, and is maintained in a state of being moved upward toward the input permanent magnet by the magnetic force of the input permanent magnet. In the open mode operation in which the mobile electrode is spaced apart from the fixed electrode. , the opening suction plate is moved in the direction toward the opening permanent magnet, and is maintained in a downwardly moved state towards the opening permanent magnet by the magnetic force of the opening permanent magnet, and the opening mode operation time is the closing mode operation time. More quickly, the magnetic force of the opening permanent magnet is greater than the magnetic force of the closing permanent magnet, and the distance that the mobile electrode moves to switch from the open mode to the closing mode is d1, and the distance that the moving electrode moves to switch from the open mode to the closing mode is If the distance between the insertion suction plates is d2 and the distance between the opening suction plate and the opening permanent magnet in the insertion mode is d4, d1 < d2 and d1 < d4.

The present invention may further include a buffer member fixedly installed on the upper surface of the intermediate support frame facing the insertion suction plate.

The input suction plate may be fixed in close contact with the buffer member during an open mode operation in which the mobile electrode is spaced apart from the fixed electrode.

The actuator for a circuit breaker using a Thompson coil according to the present invention installs the closing Thompson coil and the opening Thompson coil facing each other with a rebound plate in between, and can operate in closing mode and opening mode by moving the rebound plate. Operation reliability can be improved.

In addition, according to the present invention, by replacing the operation method applied to the existing actuator for a circuit breaker using a Thompson coil, failure factors can be reduced by reducing the link structure and the number of parts, and the reliability of the actuator for a circuit breaker using a Thompson coil can be improved. , maintenance costs can be reduced.

In addition, according to the present invention, there is no need to use parts such as latches and leaf springs required to maintain the state of the circuit breaker, so parts and failure rates can be reduced, and the closing mode or open mode state can be maintained without deterioration in state maintenance performance depending on the number of uses. It can be maintained with a certain force.

Figure 1 is a cross-sectional view showing an open mode state of an actuator for a circuit breaker using a Thompson coil according to an embodiment of the present invention.
Figure 2 is a cross-sectional view showing a state in which an actuator for a circuit breaker using a Thompson coil is converted from an open mode to a closing mode according to an embodiment of the present invention.
Figure 3 is a cross-sectional view showing the closing mode state of the actuator for a circuit breaker using a Thompson coil according to an embodiment of the present invention.

Hereinafter, an actuator for a circuit breaker using a Thompson coil according to an embodiment of the present invention will be described with reference to the attached drawings. In this process, the thickness of lines or sizes of components shown in the drawing may be exaggerated for clarity and convenience of explanation.

Additionally, the terms described below are terms defined in consideration of functions in the present invention, and may vary depending on the intention or custom of the user or operator. Therefore, definitions of these terms should be made based on the content throughout this specification.

Figure 1 is a cross-sectional view showing an open mode state of an actuator for a circuit breaker using a Thomson coil according to an embodiment of the present invention, and Figure 2 is a cross-sectional view showing an actuator for a circuit breaker using a Thomson coil in an open mode according to an embodiment of the present invention. It is a cross-sectional view showing the state of switching to the closing mode, and Figure 3 is a cross-sectional view showing the closing mode state of the actuator for a circuit breaker using a Thompson coil according to an embodiment of the present invention.

As shown in Figures 1 to 3, the circuit breaker actuator 1000 using a Thompson coil according to an embodiment of the present invention has a fixedly installed base plate 101 and a state spaced apart from the base plate 101. An intermediate support frame 105 that is fixedly installed, an upper support frame 109 that is fixedly installed and spaced apart from the intermediate support frame 105, and one side of the base plate 101 facing the intermediate support frame 105. A Thompson coil 102 for input is fixedly installed on the base plate 101, an open Thompson coil 104 is fixedly installed on the other side of the intermediate support frame 105 facing the base plate 101, and a Thompson coil 102 for input is provided. It is located between the opening Thompson coil (104) and moves in the direction toward the closing Thompson coil (102) or the opening Thompson coil (104) by the repulsive force of the closing Thompson coil (102) and the opening Thompson coil (104). The rebound plate 103, the bar-shaped mover 10 connected to the rebound plate 103 and penetrating the middle support frame 105 and the upper support frame 109, and the end of the mover 10. It includes a moving electrode (2) that is connected and moves in a straight direction with the mover (10) and is in contact with or spaced apart from the fixed electrode (4). In addition, the actuator 1000 for a circuit breaker using a Thompson coil according to an embodiment of the present invention includes a suction plate 107 for insertion, a permanent magnet 108 for insertion, a buffer member 106, a permanent magnet 110 for opening, and It further includes an opening suction plate 111.

The mover 10 penetrates the second coil frame 104a, the middle support frame 105, the buffer member 106, the first magnet frame 108a, the upper support frame 109, and the second magnet frame 110a. It has a rod shape extending from the bottom to the top. The lower part of the mover 10 is fixed to the rebound plate 103 and moves in the vertical direction like the rebound plate 103.

The mover 10 is supported by the second coil frame 104a, the middle support frame 105, the buffer member 106, the first magnet frame 108a, the upper support frame 109, and the second magnet frame 110a. With the left and right sides supported, the second coil frame (104a), the middle support frame (105), the buffer member (106), the first magnet frame (108a), the upper support frame (109), and the second magnet frame (110a) ) and can move up and down.

The moving electrode (2) can be directly connected to the upper side of the mover (10), and the moving electrode (2) can be connected to the upper side of the moving rod (1) while the moving rod (1) is connected to the upper side of the mover (10). there is.

A fixed electrode (4) is installed on the upper side of the moving electrode (2), and this fixed electrode (4) is connected to the lower side of the fixed rod (3) extending in the vertical direction.

The state in which the fixed electrode (4) and the mobile electrode (2) are separated at a set interval is called an open mode, and the state in which the mobile electrode (2) is moved and comes into contact with the fixed electrode (4) is called an closing mode.

A plate-shaped base plate 101 is located at the bottom of the circuit breaker actuator 1000 using a Thompson coil, and a plate-shaped intermediate support frame 105 is fixed to the upper side at a certain distance from the base plate 101. It is installed.

Then, a plate-shaped first coil frame 102a is fixed to the upper surface of the base plate 101, and a plate-shaped input Thompson coil 102 is installed in a groove provided on the upper side of the first coil frame 102a.

A plate-shaped repulsion plate 103 is installed on the upper part of the input Thompson coil 102, and this repulsion plate 103 includes a metal material. One rebound plate 103 for performing closing and opening operations is installed between the opening Thompson coil 104 and the closing Thompson coil 102.

A plate-shaped second coil frame 104a is fixed to the lower surface of the intermediate support frame 105, and a plate-shaped opening Thompson coil 104 is inserted into the groove provided on the lower side of the second coil frame 104a. It is fixed.

In this structure, the rebound plate 103 moves upward due to the repulsion force caused by the eddy current induced in the rebound plate 103 when operating in the closing mode in which power is applied to the Thompson coil 102 for closing. In addition, when operating in an open mode in which power is applied to the opening Thompson coil 104, the half-arm plate 103 may move downward due to the repulsive force caused by the eddy current induced in the half-arm plate 103.

When the actuator 1000 for a circuit breaker using a Thompson coil is in the open mode, the rebound plate 103 moves in the direction toward the Thompson coil 102 for tripping as shown in FIG. 1, and the actuator for a circuit breaker using a Thompson coil When 1000 is in the closing mode, it is moved in the direction toward the opening Thomson coil 104 as shown in FIG. 3.

The lower part of the bar-shaped mover 10 extending directly upward is fixed in the center of this rebound plate 103.

The buffer member 106 is installed in a fixed state on the upper surface of the intermediate support frame 105 facing the input suction plate 107, and is made of an elastic material such as rubber or urethane.

A plate-shaped input suction plate 107 extending laterally is provided on the side of the mover 10. The input suction plate 107 according to one embodiment includes a metal material and has a plate shape located between the input permanent magnet 108 and the buffer member 106.

The input suction plate 107 is fixed in close contact with the buffer member 106 in the open mode state of the circuit breaker actuator 1000 using a Thompson coil. In addition, in the closing mode state of the circuit breaker actuator 1000 using a Thompson coil, it can be fixed by the magnetic force of the closing permanent magnet 108 at a position very close to the closing permanent magnet 108. When the insertion mode operation is completed, the insertion suction plate 107 may be spaced apart from the insertion permanent magnet 108 by a preset distance. As described later, the circuit breaker actuator 1000 using a Thompson coil is designed to prevent the closing permanent magnet 108 from being damaged by the closing suction plate 107 colliding with the closing permanent magnet 108 during the closing operation. It can be.

When the circuit breaker actuator 1000 using a Thompson coil switches from the closing mode to the open mode, the closing suction plate 107 moves at high speed from the top to the bottom, applying pressure to the circuit breaker actuator 1000 using a Thompson coil. The shock absorbing member 106 can buffer the shock, and noise caused by the shock can also be reduced.

The input suction plate 107 is fixed in close contact with the buffer member 106 when operating in an open mode in which the movable electrode 2 is spaced apart from the fixed electrode 4.

The permanent magnet 108 for insertion is fixedly installed on the lower side of the upper support frame 109. When the movable electrode 2 moves toward and contacts the fixed electrode 4, the input suction plate 107 moves toward the input permanent magnet 108 and is fixed by the input permanent magnet 108.

A plate-shaped upper support frame 109 spaced at a certain interval is installed in a fixed state on the upper part of the middle support frame 105. And the plate-shaped first magnet frame (108a) is fixed to the lower surface of the upper support frame (109).

A plate-shaped permanent magnet 108 for insertion is fixed to the first magnet frame 108a. The permanent magnet 108 for closing can magnetically maintain the state in which the closing suction plate 107 moves upward when the circuit breaker actuator 1000 using a Thompson coil operates in the closing mode. In addition, the insertion permanent magnet 108 can operate in the insertion mode more smoothly by pulling the insertion suction plate 107 with its magnetic force.

The permanent magnet 110 for opening is installed in a fixed state on the upper surface of the upper support frame 109.

The opening suction plate 111 is located on the upper part of the opening permanent magnet 110 and has a plate shape that is fixed to the side of the mover 10 and extends to the side of the mover 10. When operating in the opening mode, the opening suction plate 111 moves in the direction toward the opening permanent magnet 110 and is fixed by the opening permanent magnet 110.

The opening suction plate 111 is made of a metal material, and the opening suction plate 111 is used for opening at a position very close to the opening permanent magnet 110 in the opening mode state of the circuit breaker actuator 1000 using a Thompson coil. It is fixed by the magnetic force of the research magnet (108). And when the vacuum circuit breaker is operated in the closing mode, it is spaced apart from the permanent magnet 110 for opening.

Meanwhile, the movable rod 1 may be fixedly installed on the top of the movable rod 10, and the movable electrode 2 is installed on the top of the movable rod 1. Then, the fixed electrode 4 is fixedly installed on the upper part of the movable electrode 2, and the fixed electrode 4 is fixed to the lower end of the fixed rod 3.

The plate-shaped second magnet frame 110a is fixed to the upper surface of the upper support frame 109, and the plate-shaped opening permanent magnet 110 is fixed to the upper side of the second magnet frame 110a.

The opening permanent magnet 110 can magnetically maintain the downward movement of the opening suction plate 111 when the circuit breaker actuator 1000 using a Thompson coil operates in the opening mode. In addition, the opening operation can be made more smoothly by pulling the opening suction plate 111 with the magnetic force of the opening permanent magnet 110.

Typically, the actuator 1000 for a circuit breaker using a Thompson coil must have a blocking mode operation time faster than a closing mode operation time. Therefore, it is desirable that the magnetic force of the opening permanent magnet 110 be greater than the magnetic force of the closing permanent magnet 108. In addition, the opening permanent magnet 110 is preferably formed to have a larger area than the closing permanent magnet 108.

Hereinafter, the operating state of the circuit breaker actuator 1000 using a Thompson coil according to an embodiment of the present invention will be described in detail with reference to the attached drawings.

As the movable rod (1) moves upward by the closing mode and opening mode operation of the breaker actuator (1000) using a Thompson coil, the breaker actuator (1000) using a Thompson coil enters the closing mode, and the movable rod (1) As moves downward, the circuit breaker actuator 1000 using a Thompson coil operates in an open mode.

In addition, the distance that the moving electrode 2 moves to change from the open mode to the closing mode in which the fixed electrode 4 and the moving electrode 2 are in contact is called d1, and in the open mode, the permanent magnet 108 for closing and the permanent magnet 108 for closing are called d1. If the distance between the suction plates 107 is d2, d1 < d2.

When in the open mode, the lower surface of the input suction plate 107 is in close contact with the buffer member 106. At this time, d1 and d2 satisfy the relationship d1 < d2.

When the circuit breaker actuator 1000 using a Thompson coil operates in the closing mode, the moving electrode 2 acts as a stopper, so that the closing suction plate 107 can move upward by an amount of d1. In other words, by satisfying the “d1 < d2” relationship, damage to the insertion permanent magnet 108 due to the insertion suction plate 107 colliding with the insertion permanent magnet 108 can be prevented.

In the above structure, the moving electrode 2 acts as a stopper when the circuit breaker actuator 1000 using a Thompson coil operates in the closing mode, so that the closing suction plate 107 may move upward by a distance of d2.

In FIG. 3, reference numeral “d4” refers to the distance between the opening suction plate 111 and the opening permanent magnet 110 in the closing mode. At this time, d1 and d4 satisfy the relationship “d1 < d4”.

That is, if the distance that the moving electrode 2 moves to switch from the open mode to the closing mode is called d1, and the distance between the opening suction plate 111 and the opening permanent magnet 110 in the closing mode is d4, then d1 <d4.

During the opening operation of the circuit breaker actuator 1000 using a Thompson coil, the buffer member 106 acts as a stopper, so that the opening suction plate 111 can move downward by an amount d1. That is, by satisfying the relationship “d1 < d4”, the opening permanent magnet 110 collides with the opening suction plate 111 during the opening operation. Damage can be prevented.

As described above, according to the present invention, the input Thompson coil 102 and the opening Thompson coil 104 are installed to face each other with the rebound plate 103 in between, and the input mode is established by movement of the rebound plate 103. And operation reliability can be improved by operating in open mode. In addition, by replacing the operation method applied to the existing circuit breaker actuator (1000) using a Thompson coil, failure factors can be reduced by reducing the link structure and number of parts, and the reliability of the circuit breaker actuator (1000) using a Thompson coil can be improved. and maintenance costs can be reduced. In addition, since there is no need to use parts such as latches and leaf springs required to maintain the state of the circuit breaker, the parts and failure rate can be reduced, and the closing mode or open mode state can be maintained with a constant force without deterioration in state maintenance performance depending on the number of uses. You can.

The present invention has been described with reference to the embodiments shown in the drawings, but these are merely illustrative, and those skilled in the art will understand that various modifications and other equivalent embodiments are possible therefrom. will be. Therefore, the true technical protection scope of the present invention should be determined by the scope of the patent claims below.

1000: Actuator for circuit breaker using Thompson coil
1: moving rod 2: moving electrode
3: fixed rod 4: fixed electrode
10: mover 101: base plate
102: Thompson coil for input 102a: First coil frame
103: Repulsion plate 104: Thompson coil for opening
104a: second coil frame 105: middle support frame
106: Buffer member 107: Insertion suction plate
108: permanent magnet for input 109: upper support frame
110: Permanent magnet for opening 111: Suction plate for opening

Claims (3)

A base plate that is fixedly installed;
An intermediate support frame fixedly installed and spaced apart from the base plate;
an upper support frame fixedly installed and spaced apart from the middle support frame;
An input Thompson coil fixedly installed on one side of the base plate facing the intermediate support frame;
An open Thompson coil fixedly installed on the other side of the intermediate support frame facing the base plate;
A repulsion plate located between the closing Thompson coil and the opening Thompson coil, and moving in a direction toward the closing Thompson coil or the opening Thompson coil by the repulsive force of the closing Thompson coil and the opening Thompson coil. ;
a bar-shaped mover connected to the rebound plate and penetrating the middle support frame and the upper support frame;
a moving electrode connected to an end of the mover and moving in a straight direction with the mover to contact or be spaced apart from a fixed electrode;
A permanent magnet for input is fixedly installed on the lower side of the upper support frame;
A permanent magnet for opening fixedly installed on the upper surface of the upper support frame;
an insertion suction plate located between the intermediate support frame and the insertion permanent magnet and extending to a side of the mover; and
It includes an opening suction plate located on top of the opening permanent magnet and fixed to a side of the mover and extending to the side of the mover,
When operating in a closing mode in which the movable electrode moves toward and touches the fixed electrode, the inserting suction plate is moved toward the inserting permanent magnet, and is moved upward toward the inserting permanent magnet by the magnetic force of the inserting permanent magnet. It is maintained,
When operating in an opening mode in which the moving electrode is spaced apart from the fixed electrode, the opening suction plate is moved in a direction toward the opening permanent magnet, and is moved downward toward the opening permanent magnet by the magnetic force of the opening permanent magnet. remains in the same state,
The open mode operation time is faster than the closing mode operation time, and the magnetic force of the opening permanent magnet is greater than the magnetic force of the closing permanent magnet,
The distance that the mobile electrode moves to switch from the open mode to the closing mode is d1, the distance between the permanent magnet for closing and the suction plate for closing in the open mode is d2, and the distance between the suction plate for opening and the permanent suction plate for opening in the closing mode is If the distance between magnets is d4,
An actuator for a circuit breaker using a Thompson coil, characterized in that d1 < d2 and d1 < d4.
According to paragraph 1,
An actuator for a circuit breaker using a Thompson coil, further comprising a buffer member fixedly installed on the upper surface of the intermediate support frame facing the input suction plate.
According to paragraph 2,
The actuator for a circuit breaker using a Thompson coil, characterized in that the input suction plate is fixed in close contact with the buffer member during an open mode operation in which the moving electrode is spaced apart from the fixed electrode.