Intelligent monitoring outdoor AC high-voltage vacuum circuit breaker with permanent magnet operating mechanism

Abstract

The application relates to the technical field of high-voltage circuit breakers, and discloses an intelligent monitoring outdoor alternating-current high-voltage vacuum circuit breaker with a permanent magnet operating mechanism, which comprises a mounting seat, a permanent magnet operating mechanism and a vacuum circuit component are arranged on the mounting seat, a heat dissipation cavity is arranged on the mounting seat, a heat dissipation fan is installed on the heat dissipation cavity, an air inlet is arranged on the side, away from the heat dissipation fan, of the heat dissipation cavity, filter cloth is installed at the air inlet, a pair of scrapers is arranged on the inner side of the air inlet, the scrapers are attached to the filter cloth, the permanent magnet operating mechanism comprises a permanent magnet, the permanent magnet is fixedly installed in the heat dissipation cavity, a moving iron core is movably arranged at the bottom of the permanent magnet, and an excitation coil for driving the moving iron core to move is arranged around the moving iron core. When the moving iron core moves, the filter cloth is synchronously moved, dust on the surface of the filter cloth is removed in time under the scraping of the scrapers, thus frequent maintenance of the filter cloth is avoided, and the filter cloth is secondarily cleaned by the reciprocating stroke of the moving iron core when the circuit breaker is operated to open and close.

Description

Technical Field

[0001] This invention relates to the field of high-voltage circuit breaker technology, specifically to an intelligent monitoring outdoor AC high-voltage vacuum circuit breaker with a permanent magnet operating mechanism. Background Technology

[0002] Outdoor AC high-voltage vacuum circuit breakers are important control and protection devices in power systems and are widely used in transmission and distribution lines. Permanent magnet operating mechanisms are widely used in vacuum circuit breakers due to their advantages such as simple structure, high reliability, and fast operating speed. Permanent magnet operating mechanisms generate electromagnetic force by energizing the excitation coil, which drives the moving iron core to move, thereby driving the moving contact and stationary contact in the vacuum tube to perform opening and closing operations.

[0003] However, in actual operation, the excitation coil driving the permanent magnet operating mechanism has a large current at the moment of switching on and off, which generates a lot of heat. This causes the temperature inside the heat dissipation cavity to rise sharply. The high temperature environment will affect the magnetism of the permanent magnet, causing it to demagnetize and thus affecting the operating performance and service life of the circuit breaker. To solve the heat dissipation problem, fans are usually used for active cooling. However, in outdoor environments, when the fan is running, it will draw in a lot of dust and impurities from the air inlet. This dust will be deposited on the contact surface between the permanent magnet and the moving iron core, affecting the movement accuracy of the moving iron core and even causing jamming failure.

[0004] Although existing outdoor high-voltage vacuum circuit breakers are equipped with dust filters, these filters become clogged with dust after a period of use, resulting in reduced airflow and decreased heat dissipation. This requires regular manual cleaning or replacement of the filters, leading to high maintenance costs and a large workload. Therefore, we propose an intelligent monitoring outdoor AC high-voltage vacuum circuit breaker with a permanent magnet operating mechanism. Summary of the Invention

[0005] This invention provides an intelligent monitoring outdoor AC high-voltage vacuum circuit breaker with a permanent magnet operating mechanism. This intelligent monitoring outdoor AC high-voltage vacuum circuit breaker with a permanent magnet operating mechanism can solve the problems mentioned in the background art, where existing outdoor high-voltage vacuum circuit breakers are equipped with dust filters, but the filters become clogged with dust after a period of use, resulting in reduced airflow and decreased heat dissipation. This requires regular manual cleaning or replacement of the filters, leading to high maintenance costs and a large workload.

[0006] To achieve the above objectives, this solution provides an intelligent monitoring outdoor AC high-voltage vacuum circuit breaker with a permanent magnet operating mechanism, including a mounting base. The mounting base is provided with a permanent magnet operating mechanism and a vacuum circuit breaker assembly. The mounting base is provided with a heat dissipation cavity, and a cooling fan is installed on the heat dissipation cavity. An air inlet is opened on the side of the heat dissipation cavity away from the cooling fan. A filter cloth is installed at the air inlet, and a pair of scrapers are provided inside the air inlet. The scrapers are in contact with the filter cloth. The permanent magnet operating mechanism includes a permanent magnet, which is fixedly installed in the heat dissipation cavity. A moving iron core is movably arranged at the bottom of the permanent magnet, and an excitation coil is wound around the outer periphery of the moving iron core. The moving iron core is connected to the filter cloth. A DSP controller and a temperature sensor are installed inside the heat dissipation cavity. The temperature sensor is located at the bottom of the moving iron core and is electrically connected to the DSP controller. The cooling fan is controlled by the DSP controller. When the temperature inside the heat dissipation cavity rises abnormally, the cooling fan starts.

[0007] Optionally, the permanent magnet operating mechanism further includes a fixed sleeve, which is fixedly disposed in the heat dissipation cavity. An insulating pull rod is slidably inserted into the fixed sleeve, the moving iron core is disposed on the insulating pull rod, and a return spring is sleeved on the insulating pull rod. The return spring is connected to the inner wall of the fixed sleeve.

[0008] Optionally, a pressure plate is installed at the bottom end of the insulating pull rod, and a rubber pad is provided inside the fixing sleeve, with the rubber pad located directly below the pressure plate.

[0009] Optionally, the vacuum circuit breaker assembly includes a vacuum tube, which is mounted on the mounting base. A stationary contact is fixedly installed inside the vacuum tube, and a movable contact is movably disposed inside the vacuum tube. The movable contact is connected to the insulating pull rod. The vacuum tube is equipped with an outgoing terminal and an incoming terminal. The outgoing terminal is electrically connected to the stationary contact, and the incoming terminal is electrically connected to the moving contact.

[0010] Optionally, multiple cooling fans are provided, and the number of cooling fans activated is positively correlated with the internal temperature of the heat dissipation cavity.

[0011] Optionally, a mounting bracket is fixedly provided on the side of the filter cloth near the moving iron core, and a connecting plate is connected between the mounting bracket and the moving iron core.

[0012] Optionally, a fixing frame is detachably installed inside the heat dissipation cavity. A pair of pressure strips are provided on the side of the fixing frame near the filter cloth. The pair of pressure strips are respectively provided with a pair of scrapers, and the pressure strips are in contact with the surface of the filter cloth.

[0013] Optionally, the pressure strip is configured as a flexible rubber strip, and the contact surface between the pressure strip and the filter cloth is rounded.

[0014] Optionally, a spring sheet is installed on the fixed frame, and a pressure block is installed on the side of the spring sheet near the filter cloth. The pressure block is set as a rubber block and abuts against the filter cloth. Before and after the spring sheet is deformed, the pressure block shakes the filter cloth.

[0015] Optionally, a vertical plate is installed on the connecting plate, and a plurality of protrusions are provided on the vertical plate, and the plurality of protrusions are equidistantly arranged on the vertical plate; A contact block is installed on the side of the spring sheet near the vertical plate. The contact surface between the contact block and the protrusion is set as an arc surface. When the vertical plate moves up and down, the contact block and the protrusion intermittently contact each other.

[0016] Through the above technical solution, the intelligent monitoring outdoor AC high-voltage vacuum circuit breaker with permanent magnet operating mechanism provided by this solution is used as follows: 1. After the excitation coil is energized, the cooling fan starts. The number of cooling fans that start can be dynamically adjusted according to the temperature of the moving iron core. Moreover, when the moving iron core moves, it will drive the filter cloth to move synchronously. Under the scraping of the scraper, the dust on the surface of the filter cloth is removed immediately, thus avoiding frequent maintenance of the filter cloth. When the circuit breaker performs opening and closing operations, the reciprocating stroke of the moving iron core is used to assist in cleaning the filter cloth. 3. Moreover, when the moving iron core moves, the protrusions on the vertical plate constantly abut against the contact block, causing the spring sheet to deform and rebound continuously. The pressure block shakes the surface of the filter cloth, causing the scraped debris on the filter cloth to fall off quickly and preventing the debris from sticking to the surface of the filter cloth.

[0017] Other features and advantages of this solution will be described in detail in the following detailed implementation section. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the internal structure of the heat dissipation cavity of the present invention.

[0020] Figure 3 This is a schematic diagram of the connection between the filter cloth and the moving iron core of the present invention.

[0021] Figure 4 This is a schematic cross-sectional view of the filter cloth of the present invention.

[0022] Figure 5 This is a cross-sectional structural diagram of the vacuum circuit breaker assembly of the present invention.

[0023] Figure 6 This is an exploded structural diagram of the filter cloth and mounting frame of the present invention.

[0024] Figure 7 Appendix to this invention Figure 6A magnified structural diagram of point A in the middle.

[0025] Figure 8 This is an exploded structural diagram of the fixing sleeve and the return spring of the present invention.

[0026] Figure 9 Appendix to this invention Figure 8 A magnified structural diagram at point B in the middle.

[0027] Explanation of reference numerals in the attached drawings: 101, mounting base; 201, heat dissipation cavity; 202, cooling fan; 203, insulating pull rod; 204, permanent magnet; 205, moving iron core; 206, fixing sleeve; 207, excitation coil; 208, connecting plate; 209, filter cloth; 210, fixing frame; 211, mounting bracket; 212, vertical plate; 213, pressure block; 214, pressure strip; 215, spring sheet; 216, contact block; 217, return spring; 218, pressure plate; 219, rubber pad; 220, protrusion; 221, scraper; 301, vacuum tube; 302, moving contact; 303, stationary contact; 304, outgoing terminal; 305, incoming terminal. Detailed Implementation

[0028] To make the aforementioned objectives, features, and advantages of this solution more apparent and understandable, the specific embodiments of this solution are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this solution. However, this solution can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this solution. Therefore, this solution is not limited to the specific embodiments disclosed below.

[0029] In the description of this solution, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this solution and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this solution. The terms "first" and "second" are used to distinguish one element from another and do not have sequential or importance. Furthermore, in the following description, when referring to the accompanying drawings, the same reference numerals in different drawings indicate the same or similar elements, which will not be repeated here.

[0030] In this solution, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this solution based on the specific circumstances.

[0031] According to some implementations of this solution, an intelligent monitoring outdoor AC high-voltage vacuum circuit breaker with a permanent magnet operating mechanism is provided, for reference. Figures 1 to 9 As shown, the intelligent monitoring outdoor AC high-voltage vacuum circuit breaker with permanent magnet operating mechanism includes a mounting base 101. The mounting base 101 is provided with a permanent magnet operating mechanism and a vacuum circuit breaker assembly. The mounting base 101 is provided with a heat dissipation cavity 201, which is located in the middle of the mounting base 101. The heat dissipation cavity 201 is fixedly mounted on the mounting base 101 by bolts. A cooling fan 202 is installed on the heat dissipation cavity 201. An air inlet is opened on the side of the heat dissipation cavity 201 away from the cooling fan 202.

[0032] Specifically, multiple cooling fans 202 are provided. In this embodiment, three cooling fans 202 are provided. The three cooling fans 202 are installed side by side on the side of the heat dissipation cavity 201. The number of cooling fans 202 that are activated is positively correlated with the internal temperature of the heat dissipation cavity 201. In specific implementation, the DSP controller dynamically adjusts the number of cooling fans 202 that are activated based on the temperature value detected by the temperature sensor. When the temperature is low, only one cooling fan 202 is activated. When the temperature is high, two or three cooling fans 202 are activated simultaneously to meet different heat dissipation needs.

[0033] The permanent magnet operating mechanism includes a permanent magnet 204, which is made of neodymium iron boron permanent magnet material. A movable iron core 205 is movably arranged at the bottom of the permanent magnet 204. The movable iron core 205 is made of silicon steel sheets stacked together. An excitation coil 207 for driving the movable iron core 205 to move is wound around the outer periphery of the movable iron core 205. The excitation coil 207 is wound on the outside of the movable iron core 205.

[0034] A filter cloth 209 is installed at the air inlet. The filter cloth 209 is made of polyester fiber and has good filtration performance and air permeability. A pair of scrapers 221 are provided on the inner side of the air inlet. The scrapers 221 are made of wear-resistant nylon and are attached to the filter cloth 209.

[0035] The moving iron core 205 is connected to the filter cloth 209. The heat dissipation cavity 201 is equipped with a DSP controller and a temperature sensor. The DSP controller is fixedly mounted on the mounting plate on the inner wall of the heat dissipation cavity 201 by screws. The temperature sensor is a PT100 platinum resistance temperature sensor. The temperature sensor is fixedly mounted on the bottom of the moving iron core 205 by a clip. The temperature sensor is electrically connected to the DSP controller. The cooling fan 202 is controlled by the DSP controller. When the temperature inside the heat dissipation cavity 201 rises abnormally, the cooling fan 202 starts.

[0036] Thus, when the excitation coil 207 is energized and drives the moving iron core 205 to move, a large amount of heat will be generated. The temperature sensor monitors the temperature at the bottom of the moving iron core 205 in real time. When the temperature exceeds the set threshold, the DSP controller controls the cooling fan 202 to start. External air enters the heat dissipation cavity 201 after being filtered by the filter cloth 209, which dissipates heat from the permanent magnet 204 and the moving iron core 205, preventing the permanent magnet 204 from demagnetizing due to high temperature.

[0037] For details, please refer to Figure 3 and Figure 8 The permanent magnet operating mechanism also includes a fixed sleeve 206, which is made of stainless steel. The fixed sleeve 206 is fixedly installed in the heat dissipation cavity 201 by bolts. An insulating pull rod 203 is slidably inserted on the fixed sleeve 206. The insulating pull rod 203 is made of epoxy resin glass fiber composite material, which has good insulation performance and mechanical strength. The moving iron core 205 is installed on the insulating pull rod 203 by threaded connection. A return spring 217 is sleeved on the insulating pull rod 203. One end of the return spring 217 abuts against the stepped surface on the insulating pull rod 203, and the other end of the return spring 217 is connected to the inner wall of the fixed sleeve 206.

[0038] See Figure 8 An insulating pull rod 203 has a pressure plate 218 installed at its bottom end. A rubber pad 219 is installed inside the fixing sleeve 206. The rubber pad 219 is located directly below the pressure plate 218. When the moving iron core 205 moves downward into place, the pressure plate 218 contacts the rubber pad 219. The rubber pad 219 acts as a buffer to reduce impact.

[0039] Please refer to Figure 5 The vacuum circuit breaker assembly includes a vacuum tube 301, which is made of ceramic material. The vacuum tube 301 is mounted on the mounting base 101. A stationary contact 303 is fixedly installed inside the vacuum tube 301, and a moving contact 302 is movably arranged inside the vacuum tube 301. Both the moving contact 302 and the moving contact 303 are made of copper-tungsten alloy. The moving contact 302 is connected to the insulating pull rod 203 by a threaded connection.

[0040] The vacuum tube 301 is equipped with an outgoing terminal 304 and an incoming terminal 305. The outgoing terminal 304 is electrically connected to the stationary contact 303 through a conductive rod, and the incoming terminal 305 is electrically connected to the moving contact 302 through a soft copper braided strip. When the insulating pull rod 203 moves the moving contact 302 upward, the moving contact 302 contacts the stationary contact 303, thus closing the circuit. When the insulating pull rod 203 moves the moving contact 302 downward, the moving contact 302 separates from the stationary contact 303, thus opening the circuit.

[0041] Specifically, a mounting bracket 211 is fixedly installed on the side of the filter cloth 209 near the moving iron core 205. The mounting bracket 211 is fixedly connected to the filter cloth 209 by rivets. A connecting plate 208 connects the mounting bracket 211 and the moving iron core 205. One end of the connecting plate 208 is fixedly connected to the mounting bracket 211 by bolts, and the other end of the connecting plate 208 is fixedly connected to the moving iron core 205 by bolts. It should be noted that the filter cloth 209 slides in the vertical direction, and the mounting bracket 211 and the filter cloth 209 adopt a low-friction sliding connection. The movement resistance of the filter cloth 209 is less than the output driving force of the permanent magnet operating mechanism, so as to avoid significant impact on the normal opening and closing operation of the moving iron core.

[0042] Thus, when the moving iron core 205 moves up and down, the connecting plate 208 drives the mounting bracket 211 and the filter cloth 209 to move up and down synchronously. During the movement, the filter cloth 209 moves relative to the scraper 221. The scraper 221 scrapes the surface of the filter cloth 209, removing the dust and impurities attached to the surface of the filter cloth 209, thereby achieving automatic cleaning of the filter cloth 209.

[0043] In addition, a fixing frame 210 is detachably installed inside the heat dissipation cavity 201. The fixing frame 210 is made of stainless steel and can be detachably installed inside the heat dissipation cavity 201 by clips or bolts, facilitating later maintenance and replacement. A pair of pressure strips 214 are provided on the side of the fixing frame 210 near the filter cloth 209. The pair of pressure strips 214 are respectively provided with a pair of scrapers 221, and the pressure strips 214 are in contact with the surface of the filter cloth 209. The function of the pressure strips 214 is to press the filter cloth 209 tightly onto the scrapers 221, ensuring sufficient contact pressure between the scrapers 221 and the filter cloth 209, thereby improving the cleaning effect.

[0044] The pressure strip 214 is a flexible rubber strip made of silicone rubber, which has good elasticity and wear resistance. The contact surface between the pressure strip 214 and the filter cloth 209 is rounded to prevent the edge of the pressure strip 214 from causing wear or scratches to the filter cloth 209 and to extend the service life of the filter cloth 209.

[0045] Through the above technical solution, when the intelligent monitoring outdoor AC high-voltage vacuum circuit breaker with permanent magnet operating mechanism provided by this solution needs to be opened or closed, the excitation coil 207 is energized, generating electromagnetic force to drive the moving iron core 205 to move. The moving iron core 205 drives the moving contact 302 to move through the insulating pull rod 203, realizing the opening or closing of the vacuum circuit breaker. During this process, the excitation coil 207 will generate a lot of heat. The temperature sensor monitors the temperature at the bottom of the moving iron core 205 in real time. When the temperature exceeds the set threshold (such as 60℃), the DSP controller controls the cooling fan 202 to start. The external air enters the heat dissipation cavity 201 after being filtered by the filter cloth 209, which dissipates heat from the permanent magnet 204 and the moving iron core 205. Meanwhile, when the moving iron core 205 moves, the filter cloth 209 moves synchronously through the connecting plate 208. The dust on the surface of the filter cloth 209 is removed in time by the scraper 221, realizing the automatic cleaning of the filter cloth 209 and avoiding frequent manual maintenance.

[0046] In some implementations of this solution, reference is made to Figure 6 and Figure 7 As shown, a spring sheet 215 is installed on the fixed frame 210. The spring sheet 215 is made of spring steel and has good elasticity and fatigue life. The spring sheet 215 is fixedly installed on the fixed frame 210 by screws. A pressure block 213 is installed on the side of the spring sheet 215 near the filter cloth 209. The pressure block 213 is a rubber block and is fixed to the spring sheet 215 by adhesive. The pressure block 213 abuts against the filter cloth 209. Before and after the spring sheet 215 deforms, the pressure block 213 shakes the filter cloth 209.

[0047] A vertical plate 212 is bolted onto the connecting plate 208. A protrusion 220 is provided on the vertical plate 212. The protrusion 220 is integrally formed with the vertical plate 212. Multiple protrusions 220 are provided and are equidistantly arranged on the vertical plate 212. An abutment block 216 is installed on the side of the spring sheet 215 near the vertical plate 212. The contact surface between the abutment block 216 and the protrusion 220 is set as an arc surface. When the vertical plate 212 moves up and down, the abutment block 216 and the protrusion 220 intermittently abut.

[0048] It should be noted that when the moving iron core 205 drives the connecting plate 208 and the vertical plate 212 to move up and down, the protrusions 220 on the vertical plate 212 contact and abut against the contact block 216 in sequence. Since the contact surface between the contact block 216 and the protrusion 220 is an arc-shaped surface, the protrusion 220 pushes the contact block 216 to cause the spring sheet 215 to undergo elastic deformation. After the protrusion 220 passes the contact block 216, the spring sheet 215 quickly rebounds, causing the pressure block 213 to knock and shake the surface of the filter cloth 209. This shaking action can quickly remove the dust and impurities that have been scraped off by the scraper 221 but are still attached to the surface of the filter cloth 209, preventing debris from sticking to the surface of the filter cloth 209 and further improving the cleaning effect of the filter cloth 209.

[0049] The preferred embodiments of this solution have been described in detail above with reference to the accompanying drawings. However, this solution is not limited to the specific details in the above embodiments. Within the scope of the technical concept of this solution, various simple modifications can be made to the technical solution, and these simple modifications all fall within the protection scope of this solution.

[0050] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this solution will not describe the various possible combinations separately.

[0051] Furthermore, various implementations of this solution can be combined in any way, as long as they do not violate the spirit of this solution, they should also be regarded as the content disclosed in this solution.

Claims

1. An intelligent monitoring outdoor AC high-voltage vacuum circuit breaker with a permanent magnet operating mechanism, comprising a mounting base (101), wherein the mounting base (101) is provided with a permanent magnet operating mechanism and a vacuum circuit breaker assembly, characterized in that: The mounting base (101) is provided with a heat dissipation cavity (201), and a cooling fan (202) is installed on the heat dissipation cavity (201). An air inlet is opened on the side of the heat dissipation cavity (201) away from the cooling fan (202). A filter cloth (209) is installed at the air inlet. A pair of scrapers (221) are provided inside the air inlet. The scrapers (221) are in contact with the filter cloth (209). The permanent magnet operating mechanism includes a permanent magnet (204), which is fixedly installed in the heat dissipation cavity (201). A moving iron core (205) is movably arranged at the bottom of the permanent magnet (204), and an excitation coil (207) is wound around the outer periphery of the moving iron core (205). The moving iron core (205) is connected to the filter cloth (209) in a transmission connection. The heat dissipation cavity (201) is equipped with a DSP controller and a temperature sensor. The temperature sensor is located at the bottom of the moving iron core (205) and is electrically connected to the DSP controller. The heat dissipation fan (202) is controlled by the DSP controller. When the temperature inside the heat dissipation cavity (201) rises abnormally, the heat dissipation fan (202) is activated.

2. The intelligent monitoring outdoor AC high-voltage vacuum circuit breaker with permanent magnet operating mechanism according to claim 1, characterized in that: The permanent magnet operating mechanism also includes a fixed sleeve (206), which is fixedly disposed in the heat dissipation cavity (201). An insulating pull rod (203) is slidably inserted on the fixed sleeve (206). The moving iron core (205) is disposed on the insulating pull rod (203). A return spring (217) is sleeved on the insulating pull rod (203). The return spring (217) is connected to the inner wall of the fixed sleeve (206).

3. The intelligent monitoring outdoor AC high-voltage vacuum circuit breaker with permanent magnet operating mechanism according to claim 2, characterized in that: The bottom end of the insulating pull rod (203) is equipped with a pressure plate (218), and a rubber pad (219) is provided inside the fixing sleeve (206). The rubber pad (219) is located directly below the pressure plate (218).

4. The intelligent monitoring outdoor AC high-voltage vacuum circuit breaker with permanent magnet operating mechanism according to claim 2, characterized in that: The vacuum circuit breaker assembly includes a vacuum tube (301), which is mounted on the mounting base (101). A stationary contact (303) is fixedly installed inside the vacuum tube (301), and a movable contact (302) is movably arranged inside the vacuum tube (301). The movable contact (302) is connected to the insulating pull rod (203). The vacuum tube (301) is equipped with an output terminal (304) and an input terminal (305). The output terminal (304) is electrically connected to the stationary contact (303), and the input terminal (305) is electrically connected to the moving contact (302).

5. The intelligent monitoring outdoor AC high-voltage vacuum circuit breaker with permanent magnet operating mechanism according to claim 1, characterized in that: Multiple cooling fans (202) are provided, and the number of cooling fans (202) activated is positively correlated with the internal temperature of the heat dissipation cavity (201).

6. The intelligent monitoring outdoor AC high-voltage vacuum circuit breaker with permanent magnet operating mechanism according to claim 1, characterized in that: The filter cloth (209) is fixedly provided with a mounting bracket (211) on the side near the moving iron core (205), and a connecting plate (208) is connected between the mounting bracket (211) and the moving iron core (205).

7. The intelligent monitoring outdoor AC high-voltage vacuum circuit breaker with permanent magnet operating mechanism according to claim 6, characterized in that: A fixing frame (210) is detachably installed inside the heat dissipation cavity (201). A pair of pressure strips (214) are provided on the side of the fixing frame (210) near the filter cloth (209). The pair of pressure strips (214) are respectively provided with a pair of scrapers (221), and the pressure strips (214) are in contact with the surface of the filter cloth (209).

8. The intelligent monitoring outdoor AC high-voltage vacuum circuit breaker with permanent magnet operating mechanism according to claim 7, characterized in that: The pressure strip (214) is a flexible rubber strip, and the contact surface between the pressure strip (214) and the filter cloth (209) is rounded.

9. The intelligent monitoring outdoor AC high-voltage vacuum circuit breaker with permanent magnet operating mechanism according to claim 7, characterized in that: A spring sheet (215) is installed on the fixed frame (210). A pressure block (213) is installed on the side of the spring sheet (215) near the filter cloth (209). The pressure block (213) is a rubber block and abuts against the filter cloth (209). Before and after the spring sheet (215) deforms, the pressure block (213) shakes the filter cloth (209).

10. The intelligent monitoring outdoor AC high-voltage vacuum circuit breaker with permanent magnet operating mechanism according to claim 9, characterized in that: A vertical plate (212) is installed on the connecting plate (208), and a protrusion (220) is provided on the vertical plate (212). There are multiple protrusions (220), and the multiple protrusions (220) are equidistantly arranged on the vertical plate (212). A contact block (216) is installed on the side of the spring sheet (215) near the vertical plate (212). The contact surface between the contact block (216) and the protrusion (220) is set as an arc surface. When the vertical plate (212) moves up and down, the contact block (216) and the protrusion (220) intermittently contact each other.

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