Magnetic control type pole-mounted circuit breaker

Abstract

The utility model provides a magnetic control type pole-mounted circuit breaker, which relates to the technical field of circuit breakers and comprises a circuit breaker body and a magnetic control mechanism, an insulating cover is mounted on the circuit breaker body, the magnetic control mechanism is arranged on the circuit breaker body inside the insulating cover, and a transmission main shaft is arranged inside the circuit breaker body. A main shaft connecting lever is rotatably mounted on the circuit breaker body in the insulating cover and connected with one end of the transmission main shaft, a connecting arm is arranged on the magnetic control mechanism, one end of the connecting arm is connected with the main shaft connecting lever, a mounting shaft is rotatably arranged on the circuit breaker body in the insulating cover, and an opening cam is arranged on the mounting shaft. The position of the opening cam is matched with the position of the magnetic control mechanism, and the connecting arm is connected with the opening cam; according to the utility model, the magnetic control mechanism is arranged to replace a traditional spring operating mechanism to carry out switching-on and switching-off control, the response speed of the magnetic control mechanism is high, the switching action can be rapidly completed, and the switching-off time of the whole switch is as low as 10ms, so that the normal operation of other lines is protected.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and in particular to a magnetically controlled pole-mounted circuit breaker. Background Technology

[0002] In various regions with complex environments, overhead transmission lines are a major component of the power system and transmission network, undertaking most of the industrial and domestic power transmission tasks, and are also the most prone to failure in the power system.

[0003] In the event of various faults, it is necessary to quickly disconnect the fault point to protect the normal power supply of other lines. However, traditional pole-mounted circuit breakers mostly use spring-operated mechanisms, which have a relatively long inherent operating time and cannot quickly disconnect the fault point, failing to meet the requirements of accurate line classification and rapid fault isolation. Therefore, a switch with a faster response speed is needed to handle faults. Magnetic switches have a faster response speed and can quickly complete the switching action to protect the normal operation of other lines. Therefore, this utility model proposes a magnetically controlled pole-mounted circuit breaker to overcome the shortcomings of the existing technology. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a magnetically controlled pole-mounted circuit breaker. By replacing the traditional spring-operated mechanism with a magnetic control mechanism for opening, closing, and tripping control, the magnetic control mechanism has a fast response speed and can quickly complete the switching action. The tripping time of the entire switch is as low as 10ms, thereby protecting the normal operation of other lines.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A magnetically controlled pole-mounted circuit breaker includes a circuit breaker body and a magnetic control mechanism. An insulating cover is mounted on the circuit breaker body. The magnetic control mechanism is located inside the insulating cover. A drive shaft is located inside the circuit breaker body. A main shaft crank arm is rotatably mounted on the circuit breaker body inside the insulating cover. One end of the main shaft crank arm is connected to one end of the drive shaft. A connecting arm is located on the magnetic control mechanism. One end of the connecting arm is connected to the main shaft crank arm. An installation shaft is rotatably mounted on the circuit breaker body inside the insulating cover. A tripping cam is mounted on the installation shaft. The position of the tripping cam is adapted to the position of the magnetic control mechanism. One end of the installation shaft extends through the outside of the insulating cover and has a tripping handle. The connecting arm is connected to the tripping cam.

[0007] A further improvement is that a fixing plate is provided on the outer wall of the insulating cover near the circuit breaker body, and a fixing bolt is provided on the fixing plate. The insulating cover can be detachably installed and removed from the circuit breaker body by means of the fixing bolt.

[0008] A further improvement is that the connecting arm includes a first lever arm and a second lever arm. One end of the first lever arm is hinged to the magnetic control mechanism and is connected to the opening cam. The other end of the first lever arm is rotatably provided with a second lever arm, and one end of the second lever arm is connected to the main shaft crank arm.

[0009] Further improvements include: an aviation socket is provided at the bottom of the insulating cover, an insulating sleeve is provided on the circuit breaker body, and an insulating component is provided inside the circuit breaker body.

[0010] A further improvement is that a hoisting bracket is provided on the top of the circuit breaker body, and a mounting bracket is provided at the bottom of the circuit breaker body.

[0011] A further improvement is that the circuit breaker body below the main shaft crank arm is provided with open and close indicators, and the main shaft crank arm is provided with a pointer that points to the open and close indicators.

[0012] The beneficial effects of this utility model are as follows: This utility model replaces the traditional spring operating mechanism with a magnetic control mechanism for opening and closing the circuit breaker. The magnetic control mechanism has a fast response speed and can quickly complete the switching action. The opening time of the entire switch is as low as 10ms, thereby protecting the normal operation of other lines.

[0013] The magnetic control mechanism of this utility model is installed outside the circuit breaker body and is designed to be isolated from the live circuit. This reduces the influence of the live circuit on the magnetic holding force of the magnetic control mechanism, thereby improving the stability of the magnetic control mechanism and increasing the overall life of the switch. At the same time, it is convenient to replace the magnetic control mechanism when it fails, and it will not affect some mechanical characteristics and data. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a side view of the structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the connecting arm structure of this utility model.

[0017] The components include: 1. Circuit breaker body; 2. Magnetic control mechanism; 3. Insulating cover; 4. Drive spindle; 5. Spindle crank arm; 6. Connecting arm; 601. First lever arm; 602. Second lever arm; 7. Mounting shaft; 8. Opening cam; 9. Opening handle; 10. Fixing bolt; 11. Aviation socket; 12. Insulating sleeve; 13. Insulating component; 14. Lifting bracket; 15. Mounting bracket; 16. Opening and closing indicators; 17. Pointer. Detailed Implementation

[0018] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0019] according to Figure 1-3 As shown, this embodiment proposes a magnetically controlled pole-mounted circuit breaker, including a circuit breaker body 1 and a magnetic control mechanism 2. An insulating cover 3 is installed on the circuit breaker body 1. The design of the insulating cover ensures that the operating conditions can be met even if the switch leaks air. The magnetic control mechanism 2 is provided on the circuit breaker body 1 inside the insulating cover 3. A transmission main shaft 4 is provided inside the circuit breaker body 1. A main shaft crank arm 5 is rotatably installed on the circuit breaker body 1 inside the insulating cover 3. The main shaft crank arm 5 is connected to one end of the transmission main shaft 4. A connecting arm 6 is provided on the magnetic control mechanism 2. One end of the connecting arm 6 is connected to the main shaft crank arm 5. An installation shaft 7 is rotatably provided on the circuit breaker body 1 inside the insulating cover 3. The installation shaft 7 is connected to the circuit breaker body 1 through a torsion spring. A tripping cam 8 is provided on the installation shaft 7. The position of the tripping cam 8 is adapted to the position of the magnetic control mechanism 2. One end of the installation shaft 7 extends through the outside of the insulating cover 3 and is provided with a tripping handle 9.

[0020] When the magnetically controlled pole-mounted circuit breaker is controlled to open and close, the magnetic control mechanism 2 of this invention is first rapidly magnetized after being energized. Then, the two magnets attract each other. After the magnets attract each other, the connecting arm 6 moves, driving the main shaft crank arm 5 to rotate, and the switch closes. The closing of the switch is completed. Then, when the opening button of the circuit breaker body 1 is pressed, the magnetic holding force of the magnetic control mechanism 2 dissipates, the two magnets separate, the connecting arm 6 moves, driving the main shaft crank arm 5 to rotate in the opposite direction, and the switch opens. The mounting shaft 7, the opening cam 8, and the opening handle 9 of this invention cooperate to realize manual opening. By moving the opening handle 9, the opening cam 8 on the mounting shaft 7 rotates, and the opening cam 8 lifts the upper magnet of the magnetic control mechanism 2 to manually open the circuit.

[0021] The insulating cover 3 has a fixing plate on its outer wall near the circuit breaker body 1, and a fixing bolt 10 is provided on the fixing plate. The insulating cover 3 is detachably installed and removed from the circuit breaker body 1 by the fixing bolt 10. This arrangement facilitates quick inspection and maintenance of the components installed inside the insulating cover 3 and the circuit breaker body 1.

[0022] The connecting arm 6 includes a first lever arm 601 and a second lever arm 602. One end of the first lever arm 601 is rotatably connected to the magnetic control mechanism 2, and the other end of the first lever arm 601 is rotatably connected to the second lever arm 602. One end of the second lever arm 602 is connected to the main shaft crank arm 5. In this invention, during the switch closing operation, the first lever arm 601 rotates downward, driving the second lever arm 602 to rotate, thereby driving the transmission main shaft 4 connected to the main shaft crank arm 5 to move, realizing the closing control. During the opening operation, the first lever arm 601 and the second lever arm 602 move in opposite directions, realizing the opening.

[0023] The bottom of the insulating cover 3 is provided with an aviation socket 11, the circuit breaker body 1 is provided with an insulating sleeve 12, and the circuit breaker body 1 is provided with an insulating component 13 inside.

[0024] The circuit breaker body 1 is provided with a hoisting bracket 14 at the top and a mounting bracket 15 at the bottom. This invention enables the hoisting of the magnetically controlled pole-mounted circuit breaker by using the hoisting bracket 14, and enables the mounting of the magnetically controlled pole-mounted circuit breaker by using the mounting bracket 15.

[0025] The circuit breaker body 1 below the main shaft crank arm 5 is provided with a circuit breaker opening and closing indicator 16, and the main shaft crank arm 5 is provided with a pointer 17, which points to the circuit breaker opening and closing indicator 16.

[0026] This invention replaces the traditional spring-operated mechanism with a magnetic control mechanism 2 for opening and closing control. The magnetic control mechanism 2 has a fast response speed and can quickly complete the switching action. The overall opening time of the switch is as low as 10ms, thereby protecting the normal operation of other lines. The magnetic control mechanism 2 of this invention is installed outside the circuit breaker body 1 and is designed to be isolated from the live circuit, which reduces the influence of the live circuit on the magnetic holding force of the magnetic control mechanism 2, thereby improving the stability of the magnetic control mechanism 2 and increasing the overall life of the switch. At the same time, it is convenient to replace the magnetic control mechanism 2 when it fails, and it will not affect some mechanical characteristics and data.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A magnetically controlled pole-mounted circuit breaker, characterized in that: The circuit breaker includes a circuit breaker body (1) and a magnetic control mechanism (2). An insulating cover (3) is installed on the circuit breaker body (1). The magnetic control mechanism (2) is provided on the circuit breaker body (1) inside the insulating cover (3). A transmission main shaft (4) is provided inside the circuit breaker body (1). A main shaft crank arm (5) is rotatably installed on the circuit breaker body (1) inside the insulating cover (3). One end of the main shaft crank arm (5) is connected to one end of the transmission main shaft (4). A connecting arm (6) is provided on the magnetic control mechanism (2). One end of the connecting arm (6) is connected to the main shaft crank arm (5). An installation shaft (7) is rotatably provided on the circuit breaker body (1) inside the insulating cover (3). A tripping cam (8) is provided on the installation shaft (7). The position of the tripping cam (8) is adapted to the position of the magnetic control mechanism (2). One end of the installation shaft (7) extends out of the outside of the insulating cover (3) and is provided with a tripping handle (9). The connecting arm (6) is connected to the tripping cam (8).

2. The magnetically controlled pole-mounted circuit breaker according to claim 1, characterized in that: The insulating cover (3) has a fixing plate on the outer wall of one end near the circuit breaker body (1), and a fixing bolt (10) is provided on the fixing plate. The insulating cover (3) can be detachably installed from the circuit breaker body (1) by means of the fixing bolt (10).

3. A magnetically controlled pole-mounted circuit breaker according to claim 1, characterized in that: The connecting arm (6) includes a first lever arm (601) and a second lever arm (602). One end of the first lever arm (601) is hinged to the magnetic control mechanism (2) and the first lever arm (601) is connected to the gate cam (8). The other end of the first lever arm (601) is rotatably provided with a second lever arm (602). One end of the second lever arm (602) is connected to the main shaft crank arm (5).

4. A magnetically controlled pole-mounted circuit breaker according to claim 1, characterized in that: The bottom of the insulating cover (3) is provided with an aviation socket (11), the circuit breaker body (1) is provided with an insulating sleeve (12), and the circuit breaker body (1) is provided with an insulating component (13).

5. A magnetically controlled pole-mounted circuit breaker according to claim 1, characterized in that: The circuit breaker body (1) is provided with a hoisting bracket (14) at the top and a mounting bracket (15) at the bottom.

6. A magnetically controlled pole-mounted circuit breaker according to claim 1, characterized in that: The circuit breaker body (1) below the main shaft crank arm (5) is provided with a circuit breaker opening and closing indicator (16), and the main shaft crank arm (5) is provided with a pointer (17), which points to the circuit breaker opening and closing indicator (16).

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