Circuit breaker opening and closing device

Abstract

The present invention belongs to the technical field of electric power equipment, and discloses a circuit breaker opening and closing device. The circuit breaker opening and closing device is used to rotate the switch of the circuit breaker, and includes a clamping assembly, a fixing seat and a transmission member. The clamping assembly can drive the switch to rotate; the fixing seat includes a first magnet, a second magnet and an insulating plate, the first magnet and the second magnet are respectively arranged on both sides of the insulating plate, the second magnet is fixedly connected to the insulating plate, the first magnet is adsorbed and connected to the insulating plate by the magnetic force of the second magnet, and the clamping assembly is connected to the first magnet; one end of the transmission member is connected to the second magnet, and the other end is connected to the driving mechanism, so as to be able to remotely drive the fixing seat to rotate around its own axis. The circuit breaker opening and closing device provided by the present invention can remotely open and close the circuit breaker without power outage, and at the same time, the device has a non-physical connection, which can effectively block the electrical connection between the operator and the live structure.

Description

Technical Field

[0001] The present invention relates to the technical field of power equipment, and particularly to a breaker closing and opening device. Background Art

[0002] A substation is a place in the power system for transforming voltage and current and receiving and distributing electric energy. Among them, the 10kV voltage level system of the substation often uses an SF6 vacuum breaker as the switching device in the power system. The SF6 vacuum breaker is a breaker with SF 6 gas as the insulating medium, which can realize the functions of closing, carrying, and opening the current under normal circuit conditions, as well as closing, carrying, and opening the current under abnormal circuit conditions within a specified time.

[0003] To ensure the normal operation of the power system, it is necessary to overhaul the SF6 vacuum breaker. Before overhauling the SF6 vacuum breaker, the breaker should be tripped first and the operating power supply should be cut off to ensure operation safety.

[0004] During the overhaul process, there is often an operation step that requires the operator to manually disconnect the breaker on-site. To ensure safety, there are currently two treatment methods. One is to cut off the power supply of the 10kV bus in the power system, make the breaker in a de-energized state, and then manually trip it. However, this overhaul method has problems such as long power outage time, many loads to be transferred, and complaints from users due to affecting user use. At the same time, due to the extended power outage time, it is easy to cause further deterioration of equipment defects, resulting in high economic costs and social costs. The other method is live operation. Since there is a risk of breakdown and explosion when the breaker trips during a fault, a device that can press the operating mechanism of the breaker is often used to remotely disconnect the breaker. However, due to the need to meet the strength of the device during remote operation, most of the existing pressing devices are made of metal or have physical connections, which are prone to electrical connection with the operator, resulting in the risk of electric shock to the operator during the operation process. Summary of the Invention

[0005] The purpose of the present invention is to provide a breaker closing and opening device that can remotely close and open the breaker without power outage, and at the same time, the device has no physical connection, which can effectively block the electrical connection between the operator and the energized structure.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A breaker closing and opening device for rotating the switch of the breaker, comprising:

[0008] A clamping assembly that can drive the switch to rotate;

[0009] A fixing seat, the fixing seat comprising a first magnet, a second magnet and an insulating plate, the first magnet and the second magnet are respectively arranged on both sides of the insulating plate, the second magnet is fixedly connected to the insulating plate, the first magnet is adsorbed and connected to the insulating plate by the magnetic force of the second magnet, and the clamping assembly is connected to the first magnet;

[0010] A transmission member, one end of which is connected to the second magnet, and the other end of which is connected to a driving mechanism, so as to be able to remotely drive the fixing seat to rotate around its own axis.

[0011] Optionally, the clamping assembly includes a plurality of clamping members, and the plurality of clamping members cooperate with each other to drive the switch to rotate.

[0012] Optionally, a plurality of the clamping members are arranged at intervals on the first magnet, and the intervals between different clamping members can match the thickness of the switch so as to be clamped with the switch.

[0013] Optionally, the clamping assembly is provided with a connecting structure, the first magnet is provided with a sliding groove, and the connecting structure can cooperate with the sliding groove to enable the clamping assembly to be slidably disposed on the first magnet.

[0014] Optionally, the clamping assembly is fixed to the first magnet via an insulating pin.

[0015] Optionally, the fixing seat further comprises a fixing pin, and the fixing pin can be passed through the second magnet and the transmission member to connect the transmission member and the fixing seat.

[0016] Optionally, the clamping assembly is made of insulating material.

[0017] Optionally, an insulating shell is provided on the fixing seat and the clamping assembly, and the insulating shell can cooperate with the base of the switch so that the clamping assembly can be positioned relative to the switch.

[0018] Optionally, the driving mechanism comprises a motor, and the motor is in driving connection with an end of the transmission member away from the fixing seat.

[0019] Optionally, it also includes a control component, which can remotely control the forward and reverse rotation of the motor to change the rotation direction of the switch.

[0020] Beneficial effects:

[0021] ​The circuit breaker opening and closing device provided by the present invention is to achieve the opening and closing of the circuit breaker without power interruption. The driving mechanism drives the transmission member to rotate, so that the fixed seat connected to the transmission member can rotate around its own axis. A clamping assembly is connected to the fixed seat, and the switch of the circuit breaker is clamped by the clamping assembly, so as to be able to remotely drive the switch to rotate, realize changing the rotation angle of the switch to complete the opening and closing of the circuit breaker, and reduce the risk brought by the operator approaching the circuit breaker; the clamping assembly is connected to the first magnet on the fixed seat, and the second magnet is fixed on the insulating plate. The first magnet can be adsorbed on the side of the insulating plate away from the second magnet by the magnetic force of the second magnet, and there is no conductive physical connection between the first magnet and the second magnet, avoiding the danger caused by accidental energization of the switch. The circuit breaker opening and closing device provided by the present invention can remotely perform the opening and closing of the circuit breaker without power interruption. At the same time, there is no physical connection in the device, which can effectively block the electrical connection between the operating personnel and the live structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 FIG. is a schematic structural diagram of the circuit breaker opening and closing device provided in Embodiment 1 of the present invention;

[0023] Figure 2 FIG. is a first perspective view of the circuit breaker switch provided in Embodiment 1 of the present invention;

[0024] Figure 3 FIG. is a second perspective view of the circuit breaker switch provided in Embodiment 1 of the present invention;

[0025] Figure 4 FIG. is a side view of the clamping assembly provided in Embodiment 1 of the present invention;

[0026] Figure 5 FIG. is a front view of the fixed seat provided in Embodiment 1 of the present invention;

[0027] Figure 6 FIG. is a front view of the transmission member provided in Embodiment 1 of the present invention.

[0028] In the figure:

[0029] 1. Clamping assembly; 11. Clamping member; 12. Insulating pin;

[0030] 2. Fixed seat; 21. First magnet; 22. Second magnet; 23. Insulating plate; 24. Fixed pin;

[0031] 3. Transmission member; 31. Connection hole;

[0032] 4. Driving mechanism; 41. Motor output shaft;

[0033] 5. Insulating housing;

[0034] 6. Control assembly;

[0035] 7. Switch; 71. Base. Specific Embodiment

[0036] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that for the convenience of description, only the parts related to the present invention are shown in the drawings, rather than all the structures.

[0037] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0038] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0039] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0040] Embodiment 1

[0041] As Figures 1-3 shown, the embodiment of the present invention provides a circuit breaker opening and closing device (hereinafter referred to as the "opening and closing device") for remotely rotating the switch 7 of the circuit breaker to achieve opening and closing of the circuit breaker without power interruption, avoiding the electric shock risk caused by the operator's close-range opening and closing.

[0042] The opening and closing device includes a clamping assembly 1, a fixed seat 2 and a transmission member 3. The clamping assembly 1 can drive the switch 7 to rotate. The fixed seat 2 includes a first magnet 21, a second magnet 22 and an insulating plate 23. The first magnet 21 and the second magnet 22 are respectively arranged on both sides of the insulating plate 23. The second magnet 22 is fixedly connected to the insulating plate 23. The first magnet 21 is magnetically adsorbed and connected to the insulating plate 23 through the magnetic force of the second magnet 22. The clamping assembly 1 is connected to the first magnet 21. One end of the transmission member 3 is connected to the second magnet 22, and the other end is connected to the driving mechanism 4 so as to be able to remotely drive the fixed seat 2 to rotate around its own axis.

[0043] The shape of the clamping assembly 1 can be determined according to the actual situation of the switch 7, as long as it can drive the switch 7 to rotate to realize the opening and closing of the circuit breaker. The clamping assembly 1 can be set as a detachable or adjustable structure to improve the applicability to different switches 7. The clamping assembly 1 is connected to the first magnet 21 of the fixed seat 2. The second magnet 22 is fixed on the insulating plate 23. The first magnet 21 can be magnetically adsorbed on the side of the insulating plate 23 away from the second magnet 22 through the magnetic force of the second magnet 22. The insulating plate 23 can isolate the first magnet 21 and the second magnet 22 to prevent conduction. There is no conductive physical connection between the first magnet 21 and the second magnet 22, which can reduce the electric shock risk caused by the physical connection during the opening and closing operation of the circuit breaker and avoid the danger caused by the accidental energization of the switch 7.

[0044] The fixed seat 2 is in transmission connection with the driving mechanism 4 through the transmission member 3. The driving mechanism 4 drives the transmission member 3 to rotate, so that the fixed seat 2 connected to the transmission member 3 can rotate around its own axis. Since the clamping assembly 1 is connected to the fixed seat 2, that is, when the clamping assembly 1 clamps the switch 7 of the circuit breaker, it can drive the switch 7 to rotate clockwise or counterclockwise, realize the change of the rotation angle of the switch 7, and then complete the opening and closing of the circuit breaker. In situations such as when the circuit breaker fails and there is a risk of breakdown and explosion, etc., the opening and closing device can reduce the need for operating personnel to rotate the switch 7 closely and reduce the safety risk brought by the operating personnel approaching the circuit breaker. The opening and closing device can remotely open and close the circuit breaker without power-off. At the same time, because the opening and closing device adopts magnetic adsorption connection and there is no physical connection, it can effectively block the electrical connection between the operating personnel and the energized structure, ensure personnel safety, and has a simple structure and convenient operation.

[0045] Preferably, a positioning structure can be provided on the insulating plate 23 to prevent the first magnet 21 from having a large deviation when adsorbed on the insulating plate 23.

[0046] Optionally, the driving mechanism 4 includes a motor, and the motor is in transmission connection with the end of the transmission member 3 away from the fixed seat 2.

[0047] The motor is drivingly connected to the transmission member 3 through the motor output shaft 41. The rotation of the transmission member 3 drives the fixed seat 2 to rotate about its own axis, so as to drive the switch 7 to rotate.

[0048] Optionally, the circuit breaker opening and closing device further includes a control component 6, and the control component 6 can remotely control the forward and reverse rotation of the motor to change the rotation direction of the switch 7.

[0049] The control component 6 is electrically connected to the motor to control the forward and reverse rotation of the motor through the control component 6. The control component 6 may include a control panel for the convenience of operation by the operator. A communication connection can be established between the control component 6 and the motor to better achieve the purpose of remote control. Since the control component 6 is a conventional structure, it will not be elaborated here.

[0050] As Figures 1-6 shown, optionally, the fixed seat 2 further includes a fixing pin 24, and the fixing pin 24 can pass through the second magnet 22 and the transmission member 3 to connect the transmission member 3 and the fixed seat 2.

[0051] Specifically, the transmission member 3 is of a cylindrical structure, and connecting holes 31 are provided at both ends of the transmission member 3. The two connecting holes 31 are respectively used to connect the fixing pin 24 and the motor output shaft 41. The size of the connecting holes 31 is determined according to the actual situation, and the sizes of the connecting holes 31 at both ends can be different.

[0052] Optionally, the clamping assembly 1 is fixed to the first magnet 21 through an insulating pin 12.

[0053] Optionally, the clamping assembly 1 is made of insulating material to reduce the risk of electric shock.

[0054] Optionally, the clamping assembly 1 includes a plurality of clamping members 11, and the plurality of clamping members 11 cooperate with each other to drive the switch 7 to rotate.

[0055] The plurality of clamping members 11 can be independent of each other or connected to form an integral structure. Preferably, the clamping member 11 can be in a strip shape to clamp on both sides of the switch 7, or can be staggeredly distributed on the first magnet 21, as long as it can drive the switch 7 to rotate.

[0056] Optionally, the plurality of clamping members 11 are arranged at intervals on the first magnet 21, and the distance between different clamping members 11 can be matched with the thickness of the switch 7 to be clamped with the switch 7.

[0057] Specifically, in this embodiment, the clamping assembly 1 includes two clamping members 11, and the two clamping members 11 cooperate with each other. The distance between the two clamping members 11 is slightly greater than or equal to the thickness of the switch 7 to be clamped on both sides of the switch 7, so that when the clamping assembly 1 rotates, the switch 7 can be driven to rotate.

[0058] Optionally, an insulating housing 5 is sleeved on the fixed seat 2 and the clamping assembly 1. The insulating housing 5 can cooperate with the base 71 of the switch 7 so that the clamping assembly 1 can be relatively positioned with respect to the switch 7.

[0059] The shape of the insulating housing 5 is the same as that of the base 71. When using the opening and closing device, by sleeving the insulating housing 5 on the base 71, the relative positioning of the opening and closing device and the switch 7 can be realized, which is convenient for rotating the switch 7. Specifically, the fixed seat 2 can be integrally cylindrical. Among them, the diameters of the first magnet 21 and the second magnet 22 can be slightly smaller than the diameter of the insulating plate 23. The diameter of the insulating housing 5 can cooperate with the insulating plate 23 so as to be sleeved outside the fixed seat 2 and the clamping assembly 1, prevent foreign objects from interfering, keep the inside of the insulating housing 5 clean, and prevent accidental electric shock and other situations. One end of the insulating housing 5 is open to cooperate with the base 71, and the other end cooperates with the transmission member 3, so that the fixed seat 2 is completely arranged inside the insulating housing 5, optimizing the insulation effect. Preferably, the opening and closing device can be provided with a certain support structure (not shown in the figure) to facilitate controlling the installation height and installation position and improve the convenience of use.

[0060] During use, the operator operates the control assembly 6 to control the forward or reverse rotation of the driving mechanism 4. The driving mechanism 4 can generate a torque to drive the transmission member 3 to rotate. The transmission member 3 is fixedly connected to the second magnet 22, and then drives the fixed seat 2 to rotate around its own axis, so that the first magnet 21 on the fixed seat 2 can drive the clamping assembly 1 to rotate, and thus the clamping assembly 1 can rotate the switch 7.

[0061] It can be understood that when using the opening and closing device, the operator needs to place the opening and closing device at a preset position in advance to be able to cooperate with the switch 7; when there are relatively dangerous opening and closing operations, the operator can stay away from the circuit breaker to ensure personal safety.

[0062] Embodiment 2

[0063] The circuit breaker opening and closing device provided in this embodiment is basically the same as the circuit breaker opening and closing device in Embodiment 1, and the difference lies in: the connection method of the clamping assembly 1 is different.

[0064] Optionally, a connection structure is provided on the clamping assembly 1, and a sliding groove is provided on the first magnet 21. The connection structure can cooperate with the sliding groove so that the clamping assembly 1 is slidably arranged on the first magnet 21.

[0065] By slidably connecting the clamping assembly 1 on the first magnet 21, the applicability of the opening and closing device can be improved, so as to be convenient for use in different scenarios, and avoid situations such as interference between the first magnet 21 and the base 71, which makes it difficult to realize the opening and closing operation.

[0066] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A circuit breaker opening and closing device, characterized in that: A switch (7) for turning the circuit breaker comprises: A clamping assembly (1), wherein the clamping assembly (1) can drive the switch (7) to rotate; A fixing seat (2), the fixing seat (2) comprising a first magnet (21), a second magnet (22) and an insulating plate (23), the first magnet (21) and the second magnet (22) being arranged on both sides of the insulating plate (23), the second magnet (22) being fixedly connected to the insulating plate (23), the first magnet (21) being adsorbed and connected to the insulating plate (23) by the magnetic force of the second magnet (22), and the clamping assembly (1) being connected to the first magnet (21); a transmission member (3), one end of the transmission member (3) being connected to the second magnet (22), and the other end of the transmission member (3) being connected to a driving mechanism (4), so as to be able to remotely drive the fixing seat (2) to rotate around its own axis; The clamping assembly (1) comprises a plurality of clamping members (11), and the plurality of clamping members (11) cooperate with each other to drive the switch (7) to rotate.

2. The circuit breaker opening and closing device according to claim 1, characterized in that: A plurality of the clamping members (11) are arranged at intervals on the first magnet (21), and the spacing between different clamping members (11) can match the thickness of the switch (7) so as to be clamped with the switch (7).

3. The circuit breaker opening and closing device according to claim 1, characterized in that: The clamping assembly (1) is provided with a connection structure, the first magnet (21) is provided with a slide groove, and the connection structure can cooperate with the slide groove so that the clamping assembly (1) is slidably arranged on the first magnet (21).

4. The circuit breaker opening and closing device according to claim 1, characterized in that: The clamping assembly (1) is fixed to the first magnet (21) via an insulating pin (12).

5. The circuit breaker opening and closing device according to claim 1, characterized in that: The fixing seat (2) further comprises a fixing pin (24), wherein the fixing pin (24) can be inserted through the second magnet (22) and the transmission member (3) to connect the transmission member (3) and the fixing seat (2).

6. The circuit breaker opening and closing device according to claim 1, characterized in that: The clamping assembly (1) is made of insulating material.

7. The circuit breaker opening and closing device according to claim 1, characterized in that: An insulating shell (5) is sleeved on the fixing seat (2) and the clamping assembly (1); the insulating shell (5) can cooperate with the base (71) of the switch (7) so that the clamping assembly (1) can be positioned relative to the switch (7).

8. The circuit breaker opening and closing device according to claim 1, characterized in that: The driving mechanism (4) comprises a motor, which is in driving connection with an end of the transmission member (3) away from the fixing seat (2).

9. The circuit breaker opening and closing device according to claim 8, characterized in that: It also comprises a control component (6), wherein the control component (6) can remotely control the forward and reverse rotation of the motor to change the rotation direction of the switch (7).

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