Intelligent vacuum circuit breaker

Abstract

The invention relates to the technical field of circuit breakers, and discloses an intelligent vacuum circuit breaker which comprises a vacuum circuit breaker body and a controller, a heat dissipation support is arranged at the bottom of the vacuum circuit breaker body, the heat dissipation support is provided with an upper layer and a lower layer, and an auxiliary heat dissipation mechanism is arranged between the upper layer and the lower layer of the heat dissipation support. The auxiliary heat dissipation mechanism comprises heat dissipation fins which are arranged between the upper heat dissipation support and the lower heat dissipation support and are vertically distributed at equal intervals. The heat pipe is vertically arranged in the vacuum circuit breaker body, and the other end of the heat pipe extends to the heat dissipation support located on the upper layer; the temperature sensor is arranged in the vacuum circuit breaker body and is used for detecting the temperature of the vacuum circuit breaker body; and the active heat dissipation assembly is used for carrying out active heat dissipation on the vacuum circuit breaker body according to the temperature detected by the temperature sensor.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to an intelligent vacuum circuit breaker. Background Art

[0002] In the application of power system, outdoor intelligent vacuum circuit breakers play a pivotal role, and the stability and reliability of their performance are directly related to the safety and efficiency of power grid operation. Although intelligent vacuum circuit breakers have achieved significant improvements in functionality and integrated many intelligent technologies, in actual outdoor application scenarios, their heat dissipation effect has become a key factor restricting their performance.

[0003] Specifically, during the operation of the intelligent vacuum circuit breaker, a large amount of heat will be generated due to the high-speed operation of the internal electrical components and the conversion of electrical energy. If this heat cannot be effectively dissipated, it will directly lead to a sharp rise in the temperature of the circuit breaker as a whole, especially inside the insulation shell. The high temperature environment not only accelerates the aging of internal components and reduces the service life of the circuit breaker, but may also cause safety hazards such as insulation failure and short circuit, seriously threatening the stable operation of the power system.

[0004] At present, the existing outdoor intelligent vacuum circuit breakers on the market often have deficiencies in heat dissipation design, making it difficult to effectively cope with the challenges brought by high-temperature working environments. The limitations of the heat dissipation structure, coupled with the complexity of the outdoor environment such as large temperature differences, humidity changes, dust accumulation, etc., greatly reduce the heat dissipation effect, further exacerbating the problem of temperature rise. Summary of the invention

[0005] The purpose of the present invention is to provide an intelligent vacuum circuit breaker to solve the technical problem that the existing outdoor intelligent vacuum circuit breakers often have deficiencies in heat dissipation design and are difficult to effectively cope with the challenges brought by high-temperature working environments.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] An intelligent vacuum circuit breaker comprises a vacuum circuit breaker body and a controller, wherein a heat dissipation bracket is arranged at the bottom of the vacuum circuit breaker body, wherein the heat dissipation bracket comprises an upper and a lower layer, and an auxiliary heat dissipation mechanism is arranged between the upper and lower layers of the heat dissipation brackets, wherein the auxiliary heat dissipation mechanism comprises:

[0008] Heat dissipation fins, which are arranged between the upper and lower layers of the heat dissipation brackets and are distributed equidistantly vertically;

[0009] A heat pipe is vertically arranged inside the vacuum circuit breaker body, and the other end of the heat pipe extends to the heat dissipation bracket located on the upper layer;

[0010] A temperature sensor, the temperature sensor is arranged inside the vacuum circuit breaker body and is used to detect the temperature of the vacuum circuit breaker body;

[0011] An active heat dissipation component is used to actively dissipate heat from the vacuum circuit breaker body according to the temperature detected by the temperature sensor.

[0012] As a further technical solution, the active heat dissipation component includes:

[0013] A motor, the motor being mounted on the heat dissipation bracket located at the lower layer;

[0014] A cooling fan, wherein a rotating shaft of the cooling fan is drivingly connected to the motor;

[0015] A secondary cooling fan, the secondary cooling fan is selectively driven by the motor through a differential assembly, and the differential assembly is operated according to the temperature of the heat pipe;

[0016] An inlet slot is provided on the heat dissipation bracket of the lower layer at a position corresponding to the heat dissipation fan;

[0017] An outlet slot is provided at a position on the lower heat dissipation bracket corresponding to the auxiliary heat dissipation fan.

[0018] As a further technical solution, the differential assembly includes:

[0019] A memory alloy spring, the memory alloy spring is wound on the heat pipe and can be freely expanded and contracted on the heat pipe, and the bottom of the memory alloy spring is in contact with the top surface of the heat dissipation bracket located at the lower layer;

[0020] A first gear, the first gear being arranged on the rotating shaft of the cooling fan;

[0021] A second gear, the second gear is arranged on the rotating shaft of the auxiliary cooling fan, and the first gear and the second gear are in an intermittent meshing state;

[0022] The meshing assembly is connected to the memory alloy spring. When the memory alloy spring is in a contracted state, the meshing assembly works and puts the first gear and the second gear in a meshing state.

[0023] As a further technical solution, the engagement assembly comprises:

[0024] A sleeve plate, one side of which is provided with a through slot and is sleeved on the heat pipe through the through slot, and the sleeve plate is connected to the memory alloy spring;

[0025] A sub-gear set, the sub-gear set includes two transmission gears, the transmission gears are rotatably mounted on a support frame, a first magnet is arranged at the bottom of the support frame, a second magnet is arranged directly above the support frame, the second magnet is fixedly arranged on the sleeve plate, the first magnet and the second magnet are magnetically attracted to each other, the two transmission gears are located between the first gear and the second gear, a limiting groove is provided on the top surface of the heat dissipation bracket located at the lower layer, and the bottom of the support frame slides in the limiting groove.

[0026] As a further technical solution, in the initial state, the two transmission gears are located above the No. 1 gear and the No. 2 gear; when the second magnet is located within the magnetic force range of the first magnet, under the action of the magnetic attraction, the support frame drives the two transmission gears to move upward, so that the No. 1 gear, the transmission gear and the No. 2 gear are in a meshing state, and the bottom of the support frame is still in the limiting groove.

[0027] As a further technical solution, a cleaning component is further provided between the upper and lower layers of the heat dissipation brackets, and the cleaning component is used to clean impurities accumulated between the upper and lower layers of the heat dissipation brackets.

[0028] As a further technical solution, the cleaning component includes:

[0029] Dust brushes, two of which are symmetrically arranged on both sides of the heat pipe, and the two dust brushes achieve a cleaning effect through a clamping displacement unit; the clamping displacement unit includes a connecting plate, one side of which is fixedly connected to the two dust brushes, and the other side of the connecting plate is sleeved on a vertical sliding shaft, and both ends of the vertical sliding shaft are respectively arranged between the upper and lower layers of the heat dissipation brackets, and the airflow of the cooling fan is directed toward the space between the connecting plate and the upper layer of the heat dissipation bracket.

[0030] As a further technical solution, the heat dissipation fan is used for air intake, and the auxiliary heat dissipation fan is used for air exhaust.

[0031] Beneficial effects of the present invention:

[0032] (1) The temperature of the vacuum circuit breaker during operation is detected in real time by a temperature sensor. Once the temperature reaches a preset dangerous value, the active heat dissipation component is activated for active heat dissipation. Before the preset dangerous value is reached, natural heat dissipation is performed by means of heat pipes and heat dissipation fins to increase the contact area and improve the heat dissipation performance. Once the preset dangerous value is reached, it means that the natural heat dissipation is insufficient and the active heat dissipation component is required to accelerate the heat dissipation. Thus, a combination of natural heat dissipation and active heat dissipation is selectively used to achieve efficient heat dissipation according to actual needs, thereby improving the performance of the vacuum circuit breaker in a high temperature environment;

[0033] (2) In order to prevent the poor cooling effect of a single cooling fan, an auxiliary cooling fan is set up to compensate. The cooperation between the cooling fan and the auxiliary cooling fan is used to accelerate the process of airflow introduction and export, thereby achieving effective heat dissipation in the space between the upper and lower cooling brackets, and achieving effective heat exchange for the heat pipes and other heat-conducting components, ultimately improving the overall auxiliary heat dissipation performance; and in order to prevent the energy loss problem caused by the cooling fan and the auxiliary cooling fan having to work together, a differential component is set up. Through the differential component, when the cooling fan effect is poor, that is, when the temperature continues to rise or decreases slowly, the differential component can be started, so that the cooling fan and the auxiliary cooling fan can move synchronously, realizing the inflow and outflow of external air, and achieving the best heat exchange effect, that is, the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention will be further described below in conjunction with the accompanying drawings.

[0035] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0036] Figure 2 for Figure 1 Schematic diagram of the internal structure;

[0037] Figure 3 A three-dimensional schematic diagram of a cleaning component in the present invention;

[0038] Figure 4 It is a three-dimensional schematic diagram of the first gear, the transmission gear and the second gear in the present invention.

[0039] Description of the drawings: 1. Vacuum circuit breaker body; 2. Heat dissipation bracket; 3. Auxiliary heat dissipation mechanism; 31. Heat dissipation fins; 32. Heat pipe; 33. Active heat dissipation component; 331. Motor; 332. Cooling fan; 333. Auxiliary cooling fan; 334. Differential component; 3341. Memory alloy spring; 3342. Gear No. 1; 3343. Gear No. 2; 335. Inlet slot; 336. Outlet slot; 337. Meshing component; 3371. Sleeve plate; 3372. Through slot; 3373. Transmission gear; 3374. First magnet; 3375. Second magnet; 3376. Limiting groove; 3377. Support frame; 4. Cleaning component; 41. Dust brush; 42. Connecting plate; 43. Vertical sliding shaft. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figure 1-Figure 4 As shown, the present invention is an intelligent vacuum circuit breaker, comprising a vacuum circuit breaker body 1 and a controller, wherein a heat dissipation bracket 2 is arranged at the bottom of the vacuum circuit breaker body 1, wherein the heat dissipation bracket 2 is provided with an upper and lower layer, and an auxiliary heat dissipation mechanism 3 is arranged between the upper and lower layers of the heat dissipation bracket 2, wherein the auxiliary heat dissipation mechanism 3 comprises:

[0042] Heat dissipation fins 31, which are arranged between the upper and lower layers of the heat dissipation brackets 2 and are equidistantly distributed vertically;

[0043] A heat pipe 32, wherein a heat pipe 32 is vertically arranged inside the vacuum circuit breaker body 1, and the other end of the heat pipe 32 extends to the heat dissipation bracket 2 located on the upper layer;

[0044] A temperature sensor, the temperature sensor is arranged inside the vacuum circuit breaker body 1 and is used to detect the temperature of the vacuum circuit breaker body 1;

[0045] The active heat dissipation component 33 is used to actively dissipate heat for the vacuum circuit breaker body 1 according to the temperature detected by the temperature sensor.

[0046] In order to improve the heat dissipation performance of the existing vacuum circuit breaker, the present invention pre-designs an auxiliary heat dissipation mechanism 3, and the auxiliary heat dissipation mechanism 3 allows the vacuum circuit breaker to adapt to the challenges brought by the high-temperature working environment; specifically, the temperature of the vacuum circuit breaker during operation is detected in real time by a temperature sensor. Once the temperature reaches a preset dangerous value, the active heat dissipation component 33 is started to actively dissipate heat. Before the preset dangerous value is not reached, natural heat dissipation is performed by means of heat pipes 32 and heat dissipation fins 31, so as to increase the contact area and improve the heat dissipation performance; once the preset dangerous value is reached, it means that the natural heat dissipation is insufficient, and the active heat dissipation component 33 is required to accelerate the heat dissipation, so that the natural heat dissipation and active heat dissipation methods are selectively combined to achieve efficient heat dissipation according to actual needs, thereby improving the performance of the vacuum circuit breaker in a high temperature environment.

[0047] The active heat dissipation component 33 includes:

[0048] A motor 331, wherein the motor 331 is mounted on the heat dissipation bracket 2 located at the lower layer;

[0049] A cooling fan 332, wherein a rotating shaft of the cooling fan 332 is drivingly connected to the motor 331;

[0050] A secondary cooling fan 333, the secondary cooling fan 333 is selectively driven by the motor 331 through a differential assembly 334, and the differential assembly 334 is operated according to the temperature of the heat pipe 32;

[0051] An inlet slot 335 is provided on the lower heat dissipation bracket 2 at a position corresponding to the heat dissipation fan 332;

[0052] The outlet slot 336 is provided at the position of the auxiliary cooling fan on the lower cooling bracket 2. The cooling fan 332 is used for air intake, and the auxiliary cooling fan 333 is used for air discharge.

[0053] The differential assembly 334 includes:

[0054] A memory alloy spring 3341, wherein the memory alloy spring 3341 is wound around the heat pipe 32 and can freely expand and contract on the heat pipe 32, and the bottom of the memory alloy spring 3341 is in contact with the top surface of the heat dissipation bracket 2 located at the lower layer;

[0055] A first gear 3342, wherein the first gear 3342 is disposed on the rotating shaft of the cooling fan 332;

[0056] A second gear 3343, wherein the second gear 3343 is disposed on the rotating shaft of the auxiliary cooling fan 333, and the first gear 3342 and the second gear 3343 are in an intermittent meshing state;

[0057] The meshing assembly 337 is connected to the memory alloy spring 3341. When the memory alloy spring 3341 is in a contracted state, the meshing assembly 337 works and makes the first gear 3342 and the second gear 3343 in a meshing state.

[0058] The present invention provides a structure of an active heat dissipation component 33. Specifically, when the temperature reaches a dangerous value, the controller controls the motor 331 to start, and the motor 331 drives the heat dissipation fan 332 to work, thereby accelerating the airflow speed between the heat dissipation brackets 2 on the upper and lower sides, thereby accelerating the heat dissipation. At the same time, in order to prevent the heat dissipation effect of the single heat dissipation fan 332 from being poor, a secondary heat dissipation fan 333 is provided to compensate. The cooperation between the heat dissipation fan 332 and the secondary heat dissipation fan 333 is utilized to realize the accelerated process of airflow introduction and export, thereby realizing effective heat dissipation in the space between the heat dissipation brackets 2 on the upper and lower sides. Heat is transferred to the heat pipe 32 and other heat-conducting elements to achieve effective heat exchange, thereby ultimately improving the overall auxiliary heat dissipation performance; and in order to prevent the problem of energy loss caused by the cooling fan 332 and the auxiliary cooling fan 333 having to work together, a differential component 334 is provided, and when the cooling fan 332 is not effective, that is, when the temperature continues to rise or the unloading speed is slow, the differential component 334 can be started, so that the cooling fan 332 and the auxiliary cooling fan 333 can move synchronously, realizing the one-in and one-out of the outside air, and achieving the best heat exchange effect, that is, the heat dissipation effect;

[0059] The specific working process of the differential assembly 334 is as follows: the memory alloy spring 3341 is in an extended state in the initial state, maximizing the contact with the heat pipe 32 and the outside to enhance the heat dissipation effect. When the temperature of the heat pipe 32 rises to a certain temperature, the memory alloy spring 3341 will actively contract, thereby prompting the meshing assembly 337 to work, realizing the meshing transmission of the No. 1 gear 3342 and the No. 2 gear 3343, and then allowing the motor 331 to drive the cooling fan 332 while driving the auxiliary cooling fan 333 to move synchronously. However, due to the setting of the meshing assembly 337, the movement directions of the No. 1 gear 3342 and the No. 2 gear 3343 are opposite, forming the effect that the cooling fan 332 promotes air intake and the auxiliary cooling fan 333 promotes air outlet. The two cooperate to achieve accelerated air flow. When the temperature of the heat pipe 32 drops, the memory alloy spring 3341 returns to the extended state, the meshing assembly 337 disengages from the No. 1 gear 3342 and the No. 2 gear 3343, and the cooling fan 332 operates independently.

[0060] The engagement assembly 337 includes:

[0061] A sleeve plate 3371, wherein a through slot 3372 is formed on one side of the sleeve plate 3371 and the sleeve plate 3371 is sleeved on the heat pipe 32 through the through slot 3372, and the sleeve plate 3371 is connected to the memory alloy spring 3341;

[0062] A sub-gear set, the sub-gear set includes two transmission gears 3373, the transmission gears 3373 are rotatably mounted on a support frame 3377, a first magnet 3374 is provided at the bottom of the support frame 3377, a second magnet 3375 is provided directly above the support frame 3377, the second magnet 3375 is fixedly provided on the sleeve plate 3371, the first magnet 3374 and the second magnet 3375 are magnetically attracted to each other, the two transmission gears 3373 are located between the number one gear 3342 and the number two gear 3343, a limiting groove 3376 is provided on the top surface of the heat dissipation bracket 2 located at the lower layer, and the bottom of the support frame 3377 slides in the limiting groove 3376. In the initial state, the two transmission gears 3373 are located above the number one gear 3342 and the number two gear 3343; when the second magnet 3375 is located within the magnetic force range of the first magnet 3374, under the action of the magnetic attraction, the support frame 3377 drives the two transmission gears 3373 to move upward, so that the number one gear 3342, the transmission gear 3373 and the number two gear 3343 are in a meshing state, and the bottom of the support frame 3377 is still in the limiting groove 3376.

[0063] The present invention provides a specific structure of the meshing assembly 337. When in use, the preheating shrinkage force of the memory alloy is used to drive the sleeve plate 3371 to move downward, so that the second magnet 3375 at the end of the sleeve plate 3371 moves downward and is within the magnetic force range of the first magnet 3374 and the second magnet 3375. Therefore, the first magnet 3374 and the second magnet 3375 are magnetically attracted to each other, so that the bottom of the support frame 3377 moves upward along the limiting groove 3376. When the support frame 3377 moves upward to the limit position, the two transmission gears 3373 are just meshed with the first gear 3342 and the second gear 3343. At this time, the bottom of the support frame 3377 does not leave the limiting groove 3376, thereby keeping the support frame 3377. 77, and the sleeve 3371 and the support frame 3377 are both made of lightweight materials to reduce the difficulty of movement; when the meshing component 337 needs to be disengaged, the memory alloy spring 3341 stretches and resets, driving the sleeve 3371 and the second magnet 3375 to disengage from the magnetic range of the first magnet 3374, so that under the action of its own weight, the support frame 3377 moves down again, so that the transmission gear 3373 is disengaged from the first gear 3342 and the second gear 3343. Through the above process, the automatic meshing transmission and disengagement of the first gear 3342 and the second gear 3343 are realized without the use of additional power, and based on the temperature change of the heat pipe 32, it plays a role in avoiding excessive energy consumption, and is highly practical.

[0064] A cleaning component 4 is also provided between the upper and lower layers of the heat dissipation brackets 2, and the cleaning component 4 is used to clean the impurities accumulated between the upper and lower layers of the heat dissipation brackets.

[0065] The cleaning component 4 comprises:

[0066] Dust brushes 41, two of which are symmetrically arranged on both sides of the heat pipe 32, and the two dust brushes 41 achieve a cleaning effect through a clamping displacement unit; the clamping displacement unit includes a connecting plate 42, one side of which is fixedly connected to the two dust brushes 41, and the other side of the connecting plate 42 is sleeved on a vertical sliding shaft 43, and the two ends of the vertical sliding shaft 43 are respectively arranged between the upper and lower layers of the heat dissipation bracket 2, and the airflow of the heat dissipation fan 332 is directed toward the space between the connecting plate 42 and the upper layer of the heat dissipation bracket 2.

[0067] In order to prevent impurities from accumulating on the surface of the heat pipe 32 and the memory alloy spring 3341 for a long time, which would affect the heat dissipation effect of the heat pipe 32 and the memory alloy spring 3341, a cleaning component 4 is provided. When in use, the strong airflow blown by the heat dissipation fan 332 passes through the space between the connecting plate 42 and the upper heat dissipation bracket 2 and is discharged from the outlet 336. According to the Bernoulli principle, the air flow rate above the connecting plate 42 is fast, so that the connecting plate 42 generates lift, so that the connecting plate 42 rises to a certain height, driving the two dust brushes 41 to move from bottom to top. The connecting plate 42 and the dust brush 41 are both made of lightweight materials. The connecting plate 42 is made of a material so that it can easily rise under the action of lift; when the cooling fan 332 stops working, the air flow rates on the upper and lower sides of the connecting plate 42 are the same, so the connecting plate 42 returns to the bottom position under the action of its own weight, and the above process is used to realize the up and down reciprocating motion of the connecting plate 42 and the dust brush 41, thereby realizing effective cleaning of the surface of the heat pipe 32 and the memory alloy spring 3341, and then when the cooling fan 332 and the auxiliary cooling fan 333 are started synchronously, the impurities are taken out, and the self-cleaning of the heat pipe 32 and the memory alloy spring 3341 is comprehensively realized to maintain the efficient heat dissipation performance of the heat pipe 32 and the memory alloy spring 3341.

[0068] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An intelligent vacuum circuit breaker, comprising a vacuum circuit breaker body (1) and a controller, wherein a heat dissipation bracket (2) is arranged at the bottom of the vacuum circuit breaker body (1), and the heat dissipation bracket (2) is provided with an upper and a lower layer, characterized in that: An auxiliary heat dissipation mechanism (3) is provided between the upper and lower layers of the heat dissipation brackets (2), and the auxiliary heat dissipation mechanism (3) comprises: Heat dissipation fins (31), the heat dissipation fins (31) are arranged between the upper and lower layers of the heat dissipation brackets (2), and are distributed equidistantly in the vertical direction; A heat pipe (32), wherein a heat pipe (32) is vertically arranged inside the vacuum circuit breaker body (1), and the other end of the heat pipe (32) extends to the heat dissipation bracket (2) located on the upper layer; A temperature sensor, the temperature sensor being arranged inside the vacuum circuit breaker body (1) and being used to detect the temperature of the vacuum circuit breaker body (1); An active heat dissipation component (33), the active heat dissipation component (33) being used to actively dissipate heat from the vacuum circuit breaker body (1) according to the temperature detected by the temperature sensor.

2. The intelligent vacuum circuit breaker according to claim 1, characterized in that: The active heat dissipation component (33) comprises: A motor (331), wherein the motor (331) is mounted on the heat dissipation bracket (2) located at the lower layer; A cooling fan (332), wherein a rotating shaft of the cooling fan (332) is drivingly connected to the motor (331); An auxiliary cooling fan (333), the auxiliary cooling fan (333) selectively drives the motor (331) via a differential assembly (334), and the differential assembly (334) operates according to the temperature of the heat pipe (32); An inlet slot (335) is provided on the heat dissipation bracket (2) at the lower layer at a position corresponding to the heat dissipation fan (332); An outlet slot (336) is provided on the heat dissipation bracket (2) at the lower layer at a position corresponding to the auxiliary heat dissipation fan.

3. The intelligent vacuum circuit breaker according to claim 2, characterized in that: The differential assembly (334) includes: A memory alloy spring (3341), the memory alloy spring (3341) being wound on the heat pipe (32), and the memory alloy spring (3341) being able to freely expand and contract on the heat pipe (32), and the bottom of the memory alloy spring (3341) being in contact with the top surface of the heat dissipation bracket (2) located at the lower layer; A first gear (3342), the first gear (3342) being arranged on the rotating shaft of the cooling fan (332); A second gear (3343), the second gear (3343) is arranged on the rotating shaft of the auxiliary cooling fan (333), and the first gear (3342) and the second gear (3343) are in an intermittent meshing state; A meshing assembly (337), wherein the meshing assembly (337) is connected to the memory alloy spring (3341), and when the memory alloy spring (3341) is in a contracted state, the meshing assembly (337) works to put the first gear (3342) and the second gear (3343) into a meshing state.

4. The intelligent vacuum circuit breaker according to claim 3, characterized in that: The engagement assembly (337) comprises: A sleeve plate (3371), wherein a through groove (3372) is formed on one side of the sleeve plate (3371) and the sleeve plate (3371) is sleeved on the heat pipe (32) through the through groove (3372), and the sleeve plate (3371) is connected to the memory alloy spring (3341); A secondary gear set, the secondary gear set includes two transmission gears (3373), the transmission gears (3373) are rotatably mounted on a support frame (3377), a first magnet (3374) is arranged at the bottom of the support frame (3377), a second magnet (3375) is arranged directly above the support frame (3377), the second magnet (3375) is fixedly arranged on the sleeve plate (3371), the first magnet (3374) and the second magnet (3375) are magnetically attracted to each other, the two transmission gears (3373) are located between the first gear (3342) and the second gear (3343), a limiting groove (3376) is provided on the top surface of the heat dissipation bracket (2) located at the lower layer, and the bottom of the support frame (3377) slides in the limiting groove (3376).

5. The intelligent vacuum circuit breaker according to claim 4, characterized in that: In the initial state, the two transmission gears (3373) are located above the first gear (3342) and the second gear (3343); when the second magnet (3375) is located within the magnetic force range of the first magnet (3374), under the action of the magnetic attraction, the support frame (3377) drives the two transmission gears (3373) to move upward, so that the first gear (3342), the transmission gear (3373) and the second gear (3343) are in a meshing state, and at this time, the bottom of the support frame (3377) is still in the limiting groove (3376).

6. The intelligent vacuum circuit breaker according to claim 2, characterized in that: A cleaning component (4) is also provided between the upper and lower layers of the heat dissipation brackets (2), and the cleaning component (4) is used to clean impurities accumulated between the upper and lower layers of the heat dissipation brackets.

7. The intelligent vacuum circuit breaker according to claim 6, characterized in that: The cleaning component (4) comprises: A dust brush (41), wherein two dust brushes (41) are provided and symmetrically arranged on both sides of the heat pipe (32), and the two dust brushes (41) realize a cleaning function through a clamping displacement unit; the clamping displacement unit comprises a connecting plate (42), one side of the connecting plate (42) is fixedly connected to the two dust brushes (41), and the other side of the connecting plate (42) is sleeved on a vertical sliding shaft (43), and the two ends of the vertical sliding shaft (43) are respectively arranged between the upper and lower layers of the heat dissipation bracket (2), and the airflow of the heat dissipation fan (332) is directed toward the space between the connecting plate (42) and the upper layer of the heat dissipation bracket (2).

8. The intelligent vacuum circuit breaker according to claim 7, characterized in that: The heat dissipation fan (332) is used for air intake, and the auxiliary heat dissipation fan (333) is used for air exhaust.

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