Circuit breaker operating device and circuit breaker

Abstract

This application provides an operating device and a circuit breaker. The operating device includes an operating mechanism and a magnetic control assembly. The magnetic control assembly includes a magnetic rotating body connected to and moving synchronously with a rotating wheel, and a first magnetic pole and a second magnetic pole surrounding both sides of the magnetic rotating body. The first and second magnetic poles are energized to form opposite magnetic fields, thereby driving the magnetic rotating body to rotate. In this embodiment, the magnetic field generation in the magnetic control assembly is controlled by an electrical signal input to the first and second magnetic poles. Personnel can control the operation of the magnetic control assembly via remote electrical connection or wireless communication, thereby controlling the on / off state of the circuit breaker according to actual conditions. This enables remote control or even unmanned operation, making it suitable for locations where personnel cannot easily access, where there is no staff, or where high power supply continuity is required. It has strong versatility and practicality.

Description

Technical Field

[0001] This application relates to the field of circuit breaker technology, and in particular to an operating device for a circuit breaker and a circuit breaker. Background Technology

[0002] A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions, and capable of closing, carrying, and interrupting current under abnormal circuit conditions within a specified time. As a crucial component of power distribution protection, circuit breakers are widely used throughout the power distribution system. However, in many applications, such as those where maintenance personnel are difficult to access, where there is no one on duty, and where high continuity of power supply is required, remote control of circuit breakers is often not feasible. Summary of the Invention

[0003] This application provides an operating device and circuit breaker for a circuit breaker, which can realize remote control or even unmanned operation, and has strong practicality.

[0004] In a first aspect, embodiments of this application provide an operating device for a circuit breaker, including an operating mechanism and a magnetic control component. The operating mechanism is used to drive the moving contact of the circuit breaker to move. The operating mechanism includes a rotating wheel, which is directly or indirectly coupled to the moving contact. The magnetic control component drives the moving contact to move through the rotating wheel.

[0005] The magnetic control assembly includes a magnetic rotating body connected to and moving synchronously with the rotating wheel, and a first magnetic pole and a second magnetic pole surrounding both sides of the magnetic rotating body. The first magnetic pole and the second magnetic pole are energized to form opposite magnetic properties to drive the magnetic rotating body to rotate.

[0006] In some embodiments, the magnetic rotating body includes a magnetic boundary line, and a first magnetic rotating part and a second magnetic rotating part located on both sides of the magnetic boundary line with opposite magnetic properties. The extension direction of the magnetic boundary line intersects with but is not perpendicular to a first direction. The first magnetic pole and the second magnetic pole are arranged opposite to each other along the first direction.

[0007] In some embodiments, the operating mechanism further includes a handle connected to the outer periphery of the rotating wheel, the rotating wheel and the magnetic rotating body being coaxially arranged opposite each other along the second direction, and the handle driving the rotating wheel and the magnetic rotating body to move synchronously, wherein the first direction intersects the second direction.

[0008] In some embodiments, a limiting structure is further included, the limiting structure including a limiting shaft disposed outside the rotating wheel and extending along a second direction, wherein the minimum distance between the limiting shaft and the outer periphery of the rotating wheel is less than the extension length of the handle.

[0009] In some embodiments, a linkage mechanism is also included, one end of which is connected to the circumference of the rotating wheel, and the other end moves synchronously with the moving contact.

[0010] In some embodiments, the magnetic control assembly further includes a first magnetic yoke connected to the first magnetic pole and the second magnetic pole. The first magnetic yoke, the first magnetic pole, and the second magnetic pole together form a ring structure with a notch. The magnetic rotor is disposed in the notch. The first magnetic yoke is surrounded by a first coil along its own extension direction so that the first magnetic pole and the second magnetic pole form opposite magnetism.

[0011] In some embodiments, the first magnetic yoke includes two ends that are respectively connected to the first magnetic pole and the second magnetic pole, and an arc-shaped connecting portion that connects the two ends, with a first coil surrounding the outer periphery of the arc-shaped connecting portion.

[0012] In some embodiments, the magnetic control assembly further includes a second magnetic yoke, a first magnetic connection portion connecting the second magnetic yoke and the first magnetic pole, and a second magnetic connection portion connecting the second magnetic yoke and the second magnetic pole. The second magnetic yoke has a ring structure, and the first and second magnetic connection portions are disposed inside the second magnetic yoke and arranged opposite to each other along a first direction. A second coil is wound around each of the first and second magnetic connection portions along its own extending direction, so that the first and second magnetic poles form opposite magnetic fields. The first and second magnetic poles are arranged opposite to each other along the first direction.

[0013] In some embodiments, the magnetic rotor and the first magnetic pole, as well as the magnetic rotor and the second magnetic pole, are spaced at predetermined distances.

[0014] On the other hand, embodiments of this application provide a circuit breaker including the operating device of any of the foregoing embodiments.

[0015] In some embodiments, the first magnetic pole and the second magnetic pole are arranged opposite each other along a first direction, which is parallel to the height direction or the length direction of the circuit breaker.

[0016] In some embodiments, the circuit breaker includes a housing, a rotating wheel disposed within the housing, and an operating mechanism further includes a handle that rotates synchronously and is connected to the outer periphery of the rotating wheel. The housing has an opening to allow the handle to rotate relative to it, wherein the opening has a preset size to allow the rotating wheel to rotate within a preset angle.

[0017] This application provides an operating device and circuit breaker for a circuit breaker. A magnetic control component works in conjunction with the operating mechanism to move the moving contact away from or closer to the stationary contact, thereby closing or opening the circuit breaker. The magnetic field generated in the magnetic control component is controlled by electrical signals input to the first and second magnetic poles. Personnel can control the magnetic control component remotely via electrical connection or wireless communication, thereby controlling the on / off state of the circuit breaker according to actual conditions. This enables remote control or even unmanned operation, making it suitable for locations where personnel cannot easily access the circuit, where there is no staff, or where high power supply continuity is required. It possesses strong versatility and practicality. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of an operating device provided in an embodiment of this application after the magnetic control component is hidden;

[0020] Figure 2 This is a schematic diagram of the structure of an operating device provided in an embodiment of this application;

[0021] Figure 3 yes Figure 2 A schematic diagram of the magnetic control component in the operating device shown;

[0022] Figure 4 yes Figure 3 The diagram shows the structure of the magnetic control assembly in a steady state without a limit device.

[0023] Figure 5 This is a schematic diagram of the structure of another operating device provided in the embodiments of this application;

[0024] Figure 6 This is a schematic diagram of another operating device provided in an embodiment of this application;

[0025] Figure 7 This is a schematic diagram of another operating device provided in an embodiment of this application;

[0026] Figure 8 This is a schematic diagram of another operating device provided in an embodiment of this application;

[0027] Figure 9 This is a schematic diagram of the structure of another magnetic control component provided in the embodiments of this application;

[0028] Figure 10 This is a schematic diagram of another magnetic control component provided in an embodiment of this application;

[0029] Figure 11 This is a schematic diagram of another magnetic control component provided in an embodiment of this application;

[0030] Figure 12 This is a schematic diagram of the structure of a circuit breaker provided in an embodiment of this application;

[0031] Figure 13 This is a schematic diagram of the structure of another circuit breaker provided in the embodiments of this application;

[0032] Figure 14This is a schematic diagram of another circuit breaker provided in an embodiment of this application;

[0033] Figure 15 This is a schematic diagram of another circuit breaker provided in an embodiment of this application;

[0034] Figures 16 to 19 This is a schematic diagram of the disconnection process of a circuit breaker provided in an embodiment of this application.

[0035] Marker explanation:

[0036] 1. Operating mechanism; 11. Rotating wheel; 111. Rotating shaft; 12. Handle; 13. Limiting mechanism; 131. Limiting shaft;

[0037] 2. Magnetic control assembly; 21. Magnetic rotating body; 211. Magnetic dividing line; 212. First magnetic rotating part; 213. Second magnetic rotating part; 22. First magnetic pole; 221. Accommodating space; 23. Second magnetic pole; 24. First magnetic yoke; 241. End; 242. Arc-shaped connecting part; 25. First coil; 26. Second magnetic yoke; 27. First magnetic connecting part; 28. Second magnetic connecting part; 29. ​​Second coil;

[0038] 3. Contact system; 31. Moving contact; 32. Stationary contact; 33. Moving contact arc-starting element;

[0039] 4. Linkage structure; 41. Linkage;

[0040] 5. Overcurrent trip unit; 51. Magnetic trip unit; 52. Thermal trip unit;

[0041] 6. Arc extinguishing system;

[0042] 7. Shell; 71. Opening;

[0043] X, first direction;

[0044] Y, second direction;

[0045] Z, Third-party orientation. Detailed Implementation

[0046] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0048] A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions and capable of closing, carrying, and interrupting current under abnormal circuit conditions within a specified time. A circuit breaker typically includes an operating system, a contact system, and an arc-extinguishing system. The connection or disconnection of the circuit breaker is achieved by the contact or separation of the moving and stationary contacts in the contact system. The arc-extinguishing system is used to extinguish the electric arc generated when the moving and stationary contacts separate. The operating system is used to control the closing or opening of the contact system.

[0049] Conventional circuit breakers use an operating handle to move the operating system, causing the moving contact to move closer to or away from the stationary contact. This requires manual operation. Specifically, to close the circuit, the operator must move the operating handle in a specific direction to bring the moving contact closer to the stationary contact; to open the circuit, the operator must move the operating handle in the opposite direction to move the moving contact away from the stationary contact. Therefore, the opening and closing of traditional circuit breakers requires manual on-site operation, which cannot meet the requirements of certain specific applications.

[0050] In view of this, on the one hand, embodiments of this application provide an operating device for a circuit breaker; please refer to... Figure 1 and Figure 2 The operating device includes an operating mechanism 1 and a magnetic control component 2. The operating mechanism 1 is used to drive the moving contact 31 of the circuit breaker to move. The operating mechanism 1 includes a rotating wheel 11, which is directly or indirectly coupled to the moving contact 31. The magnetic control component 2 drives the moving contact 31 to move through the rotating wheel 11.

[0051] Operating mechanism 1 is directly or indirectly connected to moving contact 31 and moves simultaneously with it to open or close the circuit breaker. The directions of their movements can be the same or opposite. Under normal circumstances, operators can control the positional relationship between moving contact 31 and stationary contact 32, and control the opening or closing of the circuit breaker, through operating mechanism 1. It is understood that the circuit breaker also has an overcurrent trip unit 5, such as a thermal trip unit 52 or a magnetic trip unit 51, for automatic disconnection. When the circuit breaker encounters a fault current, the overcurrent trip unit 5 unlocks, causing operating mechanism 1 to move and disconnect moving contact 31 and stationary contact 32. During the disconnection process, an electric arc is generated between moving contact 31 and stationary contact 32, and the arc is guided into the arc extinguishing system 6 through their respective arc-initiating rails to be extinguished.

[0052] The operating mechanism 1 includes a rotating wheel 11, which is rotatably connected to the inner wall of the circuit breaker via a rotating shaft 111 and is directly or indirectly coupled to the moving contact 31. The connection method between the rotating wheel 11 and the moving contact 31 is not limited in this embodiment, as long as the rotation of the rotating wheel 11 can drive the moving contact 31 to move. The magnetic control assembly 2 is connected to the rotating wheel 11. When it is necessary to close or open the circuit breaker, the magnetic control assembly 2 controls the rotating wheel 11 to deflect, so that the moving contact 31 moves away from or closer to the stationary contact 32.

[0053] The magnetic control assembly 2 includes a magnetic rotating body 21 connected to and moving synchronously with the rotating wheel 11, and a first magnetic pole 22 and a second magnetic pole 23 surrounding both sides of the magnetic rotating body 21, wherein the first magnetic pole 22 and the second magnetic pole 23 form opposite magnetism when energized to drive the magnetic rotating body 21 to rotate.

[0054] In the magnetic control assembly 2, the first magnetic pole 22 and the second magnetic pole 23 have opposite magnetisms. The magnetism and magnetic force of the two are determined by the direction and magnitude of the current after energization. That is, by changing the direction of the current after energization, the magnetism of the first magnetic pole 22 and the second magnetic pole 23 can be interchanged. The magnetic rotating body 21 is disposed between the first magnetic pole 22 and the second magnetic pole 23, and can be coaxially disposed with the rotating wheel 11 to achieve synchronous movement of the two. The external dimensions of the magnetic rotating body 21 are determined by the shape and size of the accommodating space 221 formed between the first magnetic pole 22 and the second magnetic pole 23, which is not limited in this application.

[0055] In use, personnel can remotely connect the first magnetic pole 22 and the second magnetic pole 23 to power them via electrical connection or wireless control. This causes the first magnetic pole 22 and the second magnetic pole 23 to acquire different magnetic properties and generate corresponding magnetic fields. Under the influence of these magnetic fields, the magnetic rotor 21 deflects and drives the rotating wheel 11 to move synchronously. Simultaneously, the moving contact 31 moves relative to the stationary contact 32, thereby closing or opening the circuit breaker. Throughout the entire process, no manual operation or on-site control is required. The circuit breaker can be closed or opened remotely, making operation simple and convenient, and applicable to various applications.

[0056] Optionally, both the first magnetic pole 22 and the second magnetic pole 23 are arc-shaped structures, and together they enclose a circular receiving space 221. The magnetic rotating body 21 has a circular outline and is disposed within the receiving space 221. When energized, the first magnetic pole 22 and the second magnetic pole 23 together form a magnetic field within the receiving space 221. The magnetic rotating body 21 deflects under the drive of electromagnetic force and drives the rotating wheel 11 to move synchronously, so that the moving contact 31 is relatively closer to or farther away from the stationary contact 32.

[0057] This application provides an operating device in which a magnetic control component 2 works in conjunction with an operating mechanism 1 to move the moving contact 31 away from or closer to the stationary contact 32, thereby closing or opening the circuit breaker. The magnetic field generated in the magnetic control component 2 is controlled by an electrical signal input to the first magnetic pole 22 and the second magnetic pole 23. Personnel can control the operation of the magnetic control component 2 via remote electrical connection or wireless communication, thereby controlling the on / off state of the circuit breaker according to actual conditions. This enables remote control or even unmanned operation, making it suitable for locations where personnel cannot easily access, where there is no staff, or where high power supply continuity is required. It possesses strong versatility and practicality.

[0058] In some embodiments, please continue reading Figure 2 The magnetic rotating body 21 includes a magnetic dividing line 211, and a first magnetic rotating part 212 and a second magnetic rotating part 213 located on both sides of the magnetic dividing line 211 and having opposite polarities. The extension direction of the magnetic dividing line 211 intersects with but is not perpendicular to the first direction X, wherein the first magnetic pole 22 and the second magnetic pole 23 are arranged opposite to each other along the first direction X.

[0059] The magnetic rotating body 21 includes a first magnetic rotating part 212 and a second magnetic rotating part 213 with different magnetic properties. The first magnetic rotating part 212 and the second magnetic rotating part 213 are the same size and are symmetrically arranged about the magnetic boundary line 211 as the axis of symmetry. Optionally, the first magnetic rotating part 212 and the second magnetic rotating part 213 are both semi-circular structures, and they are symmetrically arranged along the magnetic boundary line 211 and together form a circular magnetic rotating body 21.

[0060] The magnetic boundary line 211 can be a straight line or a curve, and this application does not limit this. In the embodiments of this application, the extension direction of the magnetic boundary line 211 refers to the extension direction of the magnetic rotor 21 under steady-state conditions. That is, the magnetic boundary line 211 has two extension directions: one is the extension direction of the magnetic boundary line 211 when the circuit breaker is closed, and the other is the extension direction of the magnetic boundary line 211 when the circuit breaker is open. The two extension directions can be symmetrically arranged along the first direction X. It should be noted that when the magnetic boundary line 211 is a curve, the extension direction of the magnetic boundary line 211 is the overall extension trend of the magnetic boundary line 211.

[0061] In this embodiment, the extension direction of the magnetic boundary line 211 intersects the first direction X but is not perpendicular to it; that is, the first magnetic rotating part 212 and the second magnetic rotating part 213 are inclined relative to the first direction X. This design allows the magnetic rotating body 21 to deflect after the first magnetic pole 22 and the second magnetic pole 23 are energized to generate a magnetic field. Specifically, as... Figure 3 As shown, when the first magnetic pole 22 is energized and generates the same magnetism as the first magnetic rotating part 212, the second magnetic pole 23 generates the opposite magnetism to the first magnetic rotating part 212. The magnetic field lines corresponding to the first magnetic pole 22 start from the first magnetic pole 22, move through the gap between the first magnetic pole 22 and the magnetic rotating body 21 to the first magnetic rotating part 212, then pass through the magnetic boundary line 211 to the second magnetic rotating part 213, and move through the gap between the second magnetic pole 23 and the magnetic rotating body 21 to the second magnetic pole 23. Finally, they return to the first magnetic pole 21 through the gap between the first magnetic pole 22 and the second magnetic pole 23, thus forming a complete magnetic circuit. In this process, the first magnetic pole 22 repels the first magnetic rotating part 212, and the second magnetic pole 23 attracts the first magnetic rotating part 212. The first magnetic rotating part 212 rotates clockwise under the action of magnetic force. The second magnetic rotating part 213 works similarly to the first magnetic rotating part 212, and will not be described in detail in this embodiment.

[0062] It should be noted that in this embodiment of the application, a limit switch is provided inside the circuit breaker so that the extension direction of the magnetic boundary line 211 intersects with but is not perpendicular to the first direction X, thereby ensuring that the magnetic rotor 21 can deflect. Figure 4 As shown, Figure 4 This is a schematic diagram showing the structure of the magnetic rotor 21 in steady state when there is no limit switch inside the circuit breaker.

[0063] Specifically, when the circuit breaker removes the limiting effect on the magnetic rotor 21 and the first magnetic pole 22 and the second magnetic pole are energized, the attraction and repulsion of the first magnetic pole 22 and the second magnetic pole 23 on the corresponding magnetic poles of the magnetic rotor 21 cause the magnetic rotor 21 to move from... Figure 3 The state rotates counterclockwise to Figure 4In this state, the attraction force of the first magnetic pole 22 on the second magnetic rotating part 213 and the attraction force of the second magnetic pole 23 on the first magnetic rotating part 212 are balanced, so the magnetic rotating body 21 is in a natural steady state. If the polarity of the first magnetic pole 22 and the second magnetic pole 23 is changed, the attraction force on the magnetic rotating body 21 becomes a repulsive force, but the magnetic rotating body 21 is still in a balanced state and will not rotate. Therefore, in order for the magnetic rotating body 21 to drive the circuit breaker to open and close, in the corresponding opening and closing steady states, the magnetic rotating body 21 is positioned relative to the circuit breaker. Figure 4 The natural steady state has a bias in order to generate starting torque.

[0064] In some embodiments, please refer to Figure 2 and Figure 5 The operating mechanism 1 also includes a handle 12 connected to the outer periphery of the rotating wheel 11. The rotating wheel 11 and the magnetic rotating body 21 are opposite to each other along the second direction Y and are coaxially arranged. The handle 12 drives the rotating wheel 11 and the magnetic rotating body 21 to move synchronously, wherein the first direction X intersects the second direction Y.

[0065] The rotating wheel 11 and the magnetic rotating body 21 move synchronously via the rotating shaft 111. Personnel can manually control the circuit breaker via the handle 12. The deflection angle of the handle 12 is the same as the angle between the two extending directions of the magnetic dividing line 211. The handle 12 indirectly drives the magnetic rotating body 21 to deflect via the rotating wheel 11, and the magnetic rotating body 21 can also indirectly drive the handle 12 to deflect via the rotating wheel 11. When the first magnetic pole 22 and the second magnetic pole 23 are de-energized, the magnetic rotating body 21 is no longer subject to electromagnetic force, thus the handle 12 can be freely operated to close or open the circuit breaker. Optionally, the extending direction of the handle 12 is parallel to the extending direction of the magnetic dividing line 211; in this case, the handle 12 will move synchronously with the magnetic dividing line 211.

[0066] The magnetic rotor 21 is disposed on one side of the rotating wheel 11 along the second direction Y, that is, the magnetic control assembly 2 is disposed on one side of the operating mechanism 1 along the second direction Y. The second direction Y intersects with the first direction X, and the two directions can be perpendicular to each other. Figure 5 This is a schematic diagram of the circuit breaker mechanism when the first direction X and the second direction Y are perpendicular. For clarity, the first direction X and the second direction Y are shown below. Figure 5 A third direction Z is also added, where the third direction Z, the first direction X, and the second direction Y are all mutually perpendicular. The specific arrangement of the magnetic control component 2 needs to be determined according to the circuit breaker structure; it can be installed either outside or inside the circuit breaker. When the magnetic control component 2 is installed outside the circuit breaker, the connection between the magnetic control component 2 and the circuit breaker can be detachable, meaning that whether the magnetic control component 2 needs to be installed can be determined according to usage requirements, meeting the usage requirements under different conditions.

[0067] In some embodiments, please refer to Figure 6The operating device also includes a limiting mechanism 13, which includes a limiting shaft 131. The limiting shaft 131 is disposed outside the rotating wheel 11 and extends along the second direction Y. The minimum distance between the limiting shaft 131 and the outer periphery of the rotating wheel 11 is less than the extension length of the handle 12.

[0068] The limiting structure is used to limit the deflection angle of the rotating wheel 11. The rotating wheel 11 is directly connected to the handle 12, directly or indirectly coupled to the moving contact 31, and coaxially connected to the magnetic rotor 21. Therefore, controlling the rotation angle of any component is sufficient to limit the deflection angle of the rotating wheel 11. In this embodiment, a limiting shaft 131 is provided and positioned on the outer periphery of the rotating wheel 11 to limit the position of the handle 12. There are two limiting shafts 131, located on both sides of the outer periphery of the rotating wheel 11 and fixedly installed on the inner wall of the circuit breaker. The two limiting shafts 131 limit the position of the handle 12 when the circuit breaker is closed and open, respectively.

[0069] In some embodiments, please refer to Figure 7 The operating device also includes a linkage structure 4, one end of which is connected to the periphery of the rotating wheel 11, and the other end moves synchronously with the moving contact 31. The linkage mechanism consists of one or more links 41, used to transmit signals from the operating mechanism 1 to the moving contact 31, driving the moving contact 31 to move away from or closer to the stationary contact 32. Specifically, one end of the linkage mechanism is rotatably connected to the outer periphery of the rotating wheel 11, and the other end is rotatably connected to the end of the moving contact 31 closer to the rotating wheel 11.

[0070] In some embodiments, please refer to Figure 8 The magnetic control component 2 also includes a first magnetic yoke 24 connected to the first magnetic pole 22 and the second magnetic pole 23. The first magnetic yoke 24, the first magnetic pole 22 and the second magnetic pole 23 together form a ring structure with a notch. The magnetic rotor 21 is disposed in the notch. The first magnetic yoke 24 is surrounded by a first coil 25 along its own extension direction so that the first magnetic pole 22 and the second magnetic pole 23 form opposite magnetism.

[0071] The first magnetic yoke 24 connects the first magnetic pole 22 and the second magnetic pole 23, and controls the first magnetic pole 22 and the second magnetic pole 23 to generate different magnetic properties. The first coil 25 works in conjunction with the first magnetic yoke 24. When the first coil 25 is energized, the first magnetic pole 22 and the second magnetic pole 23 become magnetic. The direction of the current in the first coil 25 is determined by the winding method of the first coil 25 and the arrangement of the magnetic rotor 21, which is not limited in this application. The first magnetic yoke 24, the first magnetic pole 22, and the second magnetic pole 23 together form a ring structure with a notch. The ring structure can be a circular ring structure or a polygonal ring structure, etc. The notch in the ring structure is the receiving space 221, used to install the magnetic rotor 21. In use, the first coil 25 is energized, and one of the first magnetic pole 22 and the second magnetic pole 23 simultaneously forms the N pole and the other forms the S pole, thereby driving the magnetic rotor 21 to rotate.

[0072] In some embodiments, please refer to Figure 9 The first magnetic yoke 24 includes two ends 241 connecting the first magnetic pole 22 and the second magnetic pole 23, and an arc-shaped connecting portion 242 connecting the two ends 241. The first coil 25 is arranged around the outer periphery of the arc-shaped connecting portion 242.

[0073] As described above, the first magnetic yoke 24, the first magnetic pole 22, and the second magnetic pole 23 together form a ring structure with a notch, and the ring structure can be of various shapes. In this embodiment, the portion of the first magnetic yoke 24 where the first coil 25 is mounted is set as an arc-shaped structure, which facilitates the winding of the first coil 25 and also reduces the overall width of the magnetic control assembly 2 to meet the needs of different circuit breakers. For example, for a 2P circuit breaker, since both circuit breakers are connected to the phase line, each stage of the circuit breaker is equipped with a magnetic trip unit 51. In this case, the space for mounting the magnetic control assembly 2 is reduced, so the magnetic control assembly 2 in this embodiment can be used to meet the actual installation requirements.

[0074] In some embodiments, please refer to Figure 10 and Figure 11 The magnetic control component 2 also includes a second magnetic yoke 26, a first magnetic connection portion 27 connecting the second magnetic yoke 26 and the first magnetic pole 22, and a second magnetic connection portion 28 connecting the second magnetic yoke 26 and the second magnetic pole 23. The second magnetic yoke 26 has a ring structure. The first magnetic connection portion 27 and the second magnetic connection portion 28 are disposed inside the second magnetic yoke 26 and are arranged opposite to each other along the first direction X. The first magnetic connection portion 27 and the second magnetic connection portion 28 are both surrounded by a second coil 29 along their own extension direction so that the first magnetic pole 22 and the second magnetic pole 23 form opposite magnetism.

[0075] In this embodiment, the second magnetic yoke 26 forms a closed ring structure for supplying current to the first magnetic connection portion 27 and the second magnetic connection portion 28. The ring structure can be... Figure 9 The square ring shown can also be Figure 10 The circular shape is shown. The current directions of the first magnetic connection portion 27 and the second magnetic connection portion 28 are opposite. Two second coils 29 are provided, respectively wound around the first magnetic connection portion 27 and the second magnetic connection portion 28, and the winding directions of the two second coils 29 are the same, so that the first magnetic pole 22 and the second magnetic pole 23 form opposite magnetism. In this embodiment, the outer periphery of the second magnetic yoke 26 has a complete magnetic circuit portion, which increases the volume of the second magnetic yoke 26, makes the magnetic circuit less prone to saturation, and can output a larger electromagnetic force. It should be noted that the second coil 29 cannot be arranged on the outer periphery of the second magnetic yoke 26. If the second coil 29 is arranged on the outer periphery of the second magnetic yoke 26, the magnetic flux formed by the second coil 29 will only form a closed loop on the outer periphery of the magnetic yoke, and will not pass through the first magnetic pole 22 and the second magnetic pole 23, and it cannot be guaranteed that the magnetic rotor 21 will deflect.

[0076] In some embodiments, the magnetic rotor 21 is spaced at a predetermined distance from the first magnetic pole 22 and from the second magnetic pole 23. A magnetic gap exists between the magnetic rotor 21 and the first and second magnetic poles 22 and 23, thus forming a non-contact coupling. When the first and second magnetic poles 22 and 23 are de-energized, the circuit breaker can be manually controlled to close or open. At this time, due to the presence of the magnetic gap, there are no interference factors such as friction between the magnetic rotor 21 and the first and second magnetic poles 22 and 23. Compared to other control methods, the electromagnetic control method in this embodiment can reduce resistance interference and improve the service life of the circuit breaker.

[0077] On the other hand, this application also provides a circuit breaker, including the operating device of any of the foregoing embodiments.

[0078] The entire circuit breaker, excluding the operating device, is described in detail below. Figure 12 It also includes a contact system 3, an arc-extinguishing system 6, and an overcurrent trip unit 5, etc. This application does not limit the internal arrangement of the circuit breaker. The operating device is used to drive the moving contact 31 in the contact system 3 to move closer to or further away from the stationary contact 32; the overcurrent trip unit 5 is used to detect the fault current and control the moving contact 31 to disconnect from the stationary contact 32; the arc-extinguishing system 6 is used to extinguish the arc generated when the moving contact 31 and the stationary contact 32 disconnect.

[0079] In some embodiments, please refer to Figures 13 to 15 The first magnetic pole 22 and the second magnetic pole 23 are arranged opposite each other along the first direction X, wherein the first direction X is parallel to the height direction of the circuit breaker or parallel to the length direction of the circuit breaker.

[0080] As described above, the magnetic control assembly 2 can be installed inside or outside the circuit breaker; it can be fixedly connected to the circuit breaker or detachably connected to it. Therefore, the arrangement of the magnetic control assembly 2 in this embodiment is more flexible than that of the circuit breaker, and can be installed at different positions on the circuit breaker at different angles depending on the different circuit breaker structures.

[0081] For example, please see Figure 13 For conventional 1P+N (or 3P+N) circuit breakers, not every circuit breaker is equipped with a magnetic trip unit 51. Therefore, the magnetic control component 2 can be set at the position of the magnetic trip unit 51. At this time, there is a large space for arranging the magnetic control component 2, and the first direction X can be set parallel to the height direction (thickness direction) of the circuit breaker.

[0082] Please see Figure 14 For a 2P circuit breaker, since both circuit breakers are connected to the phase line, each stage has a magnetic trip unit 51. In this case, the magnetic control assembly 2 needs to be positioned above the magnetic trip unit 51, with the first direction X parallel to the length direction of the circuit breaker. Optionally, the portion of the first magnetic yoke 24 where the first coil 25 is mounted can be configured as an arc-shaped structure, which facilitates the winding of the first coil 25 while preventing the magnetic control assembly 2 from excessively protruding from the height of the circuit breaker.

[0083] Please see Figure 15 For some 1P+N (or 3P+N) circuit breakers where the N-level does not have an arc-extinguishing system 6, since there is more space inside the circuit breaker to accommodate the magnetic control assembly 2, the magnetic control assembly 2 can be placed inside the circuit breaker, and the first direction X can be set parallel to the height direction of the circuit breaker to improve the space utilization of the circuit breaker.

[0084] In some embodiments, please continue reading Figure 14 The circuit breaker includes a housing 7, a rotating wheel 11 disposed inside the housing 7, and an opening 71 provided on the housing 7 for the handle 12 to rotate relative to it. The opening 71 has a preset size so that the rotating wheel 11 can rotate within a preset angle.

[0085] The handle 12 is connected to the rotating wheel 11. The rotatable angle of the rotating wheel 11 is the deflectable angle of the handle 12. Therefore, by limiting the deflection angle of the handle 12, the rotating wheel 11 can be controlled. The rotating wheel 11 is not shown in the figure. In this embodiment, by providing an opening 71 on the circuit breaker and limiting the size of the opening 71, the handle 12 can only deflect within a preset angle, that is, the rotating wheel 11 can only rotate within a preset angle, thereby achieving a limiting function. The structure is simple and reliable.

[0086] Furthermore, the contact system 3 of the circuit breaker also includes a moving contact arc-inducing element 33. The moving contact 31 can only move relative to the moving contact arc-inducing element 33 and the stationary contact 32. Therefore, the moving contact arc-inducing element 33 and the stationary contact 32 can limit the range of movement of the moving contact 31. Since the moving contact 31 is indirectly or directly connected to the operating mechanism 1, the contact system 3 can also self-limit the rotation angle of the handle 12 and the rotating wheel 11. That is, the opening 71 of the circuit breaker and the structure of the contact system 3 can provide a double limiting function.

[0087] Next, please refer to Figures 16 to 19 The embodiments of this application will describe the working process of the circuit breaker in detail.

[0088] S1, please refer to Figure 16 Initially, the circuit breaker is in the closed state, with the moving contact 31 in contact with the stationary contact 32. At this time, the first magnetic pole 22 and the second magnetic pole 23 are unpolarized, and the magnetic rotating part 21 is in a steady-state biased position due to the circuit breaker's limiting state. The magnetic boundary line 211 is located at the first position. Among them, the first magnetic rotating part 212 is the S pole, and the second magnetic rotating part 213 is the N pole.

[0089] S2, please refer to Figure 17 When the circuit breaker needs to be disconnected, the first coil 25 is energized, causing the first magnetic pole 22 to have S-pole magnetism and the second magnetic pole 23 to have N-pole magnetism. Under the action of electromagnetic force, the magnetic rotor 21 begins to rotate clockwise, and at the same time, the moving contact 31 begins to move away from the stationary contact 32 and gradually approaches the moving contact arc-inducing element 33.

[0090] It should be noted that in this step, the first coil 25 may not be energized, and the moving contact 31 and the stationary contact 32 may be disconnected by controlling the handle 12. At the same time, the following steps may also be controlled by a similar method, which will not be described in detail in this embodiment.

[0091] S3, please refer to Figure 18 When the moving contact 31 contacts the moving contact arc-inducing element 33, the magnetic rotor 21 stops moving. At this time, the magnetic boundary line 211 is located at the second position, and the magnetic rotor 21 is still in an offset state and has a tendency to rotate clockwise. However, due to the presence of the internal limit device of the circuit breaker, the magnetic rotor 21 cannot continue to rotate, and the magnetic rotor is in a relatively stable intermediate state.

[0092] S4, please refer to Figure 19 Finally, the current in the first coil 25 is disconnected, causing the first magnetic pole 22 and the second magnetic pole 23 to lose their magnetism. The magnetic rotor 21 remains in a biased state and no longer has the tendency to rotate clockwise. The magnetic rotor 21 remains in this biased stable state.

[0093] It should be noted that the embodiments of this application only describe the circuit breaker opening process. The closing process is the same in principle and similar in process as the opening process, and will not be described again in the embodiments of this application.

[0094] This application embodiment adds a magnetic control component to the traditional circuit breaker. The magnetic control component controls the rotation of the rotating wheel in the operating mechanism, enabling remote control of the circuit breaker's closing and opening. Furthermore, the magnetic control component can be configured in different shapes and can be flexibly installed according to different circuit breaker structures, exhibiting strong versatility. In addition, using a magnetic control component can avoid interference factors such as friction, improving the overall lifespan of the circuit breaker.

[0095] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An operating device for a circuit breaker, characterized in that, The circuit breaker includes an operating mechanism and a magnetic control assembly. The operating mechanism is used to drive the moving contact of the circuit breaker to move. The operating mechanism includes a rotating wheel, which is directly or indirectly coupled to the moving contact. The magnetic control assembly drives the moving contact to move through the rotating wheel. The magnetic control assembly includes a magnetic rotating body connected to and moving synchronously with the rotating wheel, and a first magnetic pole and a second magnetic pole surrounding both sides of the magnetic rotating body, wherein the first magnetic pole and the second magnetic pole are energized to form opposite magnetism to drive the magnetic rotating body to rotate; The magnetic rotating body includes a magnetic dividing line, and a first magnetic rotating part and a second magnetic rotating part located on both sides of the magnetic dividing line and having opposite magnetic properties. The extension direction of the magnetic dividing line intersects with the first direction but is not perpendicular to it. Wherein, the first magnetic pole and the second magnetic pole are arranged opposite to each other along the first direction; The first magnetic pole corresponds to a portion of the structure of the first magnetic rotating part and a portion of the structure of the second magnetic rotating part, and the second magnetic pole corresponds to a portion of the structure of the first magnetic rotating part and a portion of the structure of the second magnetic rotating part, so as to generate a starting torque on the magnetic rotating body; The operating mechanism further includes a handle connected to the outer periphery of the rotating wheel. The rotating wheel and the magnetic rotating body are coaxially arranged opposite each other along the second direction. The handle drives the rotating wheel and the magnetic rotating body to move synchronously, wherein the first direction and the second direction intersect. It also includes a limiting structure, which includes a limiting shaft disposed outside the rotating wheel and extending along a second direction, wherein the minimum distance between the limiting shaft and the outer periphery of the rotating wheel is less than the extension length of the handle.

2. The operating device according to claim 1, characterized in that, It also includes a linkage mechanism, one end of which is connected to the circumference of the rotating wheel, and the other end moves synchronously with the moving contact.

3. The operating device according to claim 1, characterized in that, The magnetic control component further includes a first magnetic yoke connected to the first magnetic pole and the second magnetic pole. The first magnetic yoke, the first magnetic pole, and the second magnetic pole together form a ring structure with a notch. The magnetic rotor is disposed in the notch. The first magnetic yoke is surrounded by a first coil along its own extension direction so that the first magnetic pole and the second magnetic pole form opposite magnetism.

4. The operating device according to claim 3, characterized in that, The first magnetic yoke includes two ends that are respectively connected to the first magnetic pole and the second magnetic pole, and an arc-shaped connecting portion that connects the two ends. The first coil is disposed around the outer periphery of the arc-shaped connecting portion.

5. The operating device according to claim 1, characterized in that, The magnetic control assembly further includes a second magnetic yoke, a first magnetic connection portion connecting the second magnetic yoke and the first magnetic pole, and a second magnetic connection portion connecting the second magnetic yoke and the second magnetic pole. The second magnetic yoke has a ring structure. The first magnetic connection portion and the second magnetic connection portion are disposed inside the second magnetic yoke and are arranged opposite to each other along a first direction. The first magnetic connection portion and the second magnetic connection portion are both surrounded by a second coil along their own extension direction so that the first magnetic pole and the second magnetic pole form opposite magnetism. The first magnetic pole and the second magnetic pole are arranged opposite each other along the first direction.

6. The operating device according to claim 1, characterized in that, The magnetic rotor and the first magnetic pole are spaced at a predetermined distance from each other, as are the magnetic rotor and the second magnetic pole.

7. A circuit breaker, characterized in that, Includes the operating device as described in any one of claims 1-6.

8. The circuit breaker according to claim 7, characterized in that, The first magnetic pole and the second magnetic pole are arranged opposite each other along a first direction, which is parallel to the height direction or the length direction of the circuit breaker.

9. The circuit breaker according to claim 7, characterized in that, The circuit breaker includes a housing, the rotating wheel is disposed inside the housing, and the operating mechanism further includes a handle that rotates synchronously and is connected to the outer periphery of the rotating wheel. The housing is provided with an opening to allow the handle to rotate relative to it, wherein the opening has a preset size to allow the rotating wheel to rotate within a preset angle.

Images