Intelligent power grid outdoor box type high-voltage alternating-current vacuum circuit breaker

Abstract

The invention relates to the technical field of vacuum circuit breakers, and particularly discloses an intelligent power grid outdoor box type high-voltage alternating-current vacuum circuit breaker which comprises a control box, a fixing pipe is fixedly connected to the top of the control box, outer cooling fins are fixedly connected to the side face of the fixing pipe in a sleeving and folding mode, and an auxiliary pipe is communicated with the side face of the fixing pipe. The inner wall of the fixed pipe is fixedly connected with a circuit breaking device, the circuit breaking device comprises a vacuum pipe, the side face of the vacuum pipe is fixedly connected with an inner cooling fin, the top of the vacuum pipe penetrates through and is fixedly connected with an upper electrode, the inner wall of the movable device is slidably connected with a lower electrode, and the bottom of the lower electrode is fixedly connected with a connecting column. The top of the vacuum tube is fixedly connected with an energy storage device, the side face of the inner cooling fin is fixedly connected with the inner wall of the fixed tube, the control box controls on-off of the interior of the fixed tube, and the intelligent power grid outdoor box type high-voltage alternating-current vacuum circuit breaker achieves the purposes of increasing the contact area and achieving multi-directional disengagement.

Description

An outdoor box-type high-voltage AC vacuum circuit breaker for smart grids Technical Field

[0001] This invention relates to the field of vacuum circuit breaker technology, specifically to an outdoor box-type high-voltage AC vacuum circuit breaker for smart grids. Background Technology

[0002] The development of outdoor box-type high-voltage AC vacuum circuit breakers for smart grids is an inevitable result of meeting the comprehensive needs of modern power grids for high reliability, intelligent operation and maintenance, and green environmental protection. Its technological evolution has shifted from a single breaking function to an integrated intelligent terminal deeply integrated with the distribution network. It has moved from using sulfur hexafluoride, oil, and air as its primary gases, towards environmentally friendly gases such as dry air. It features a distributed (separate mechanism and arc-extinguishing chamber) integrated, modular, box-type structure, complex field wiring, deep integration of primary equipment and secondary sensing / control units, regular maintenance, power outage troubleshooting, online monitoring, status self-diagnosis, maintenance-free / minimum maintenance, insulation aging, operating mechanism failure integration reliability, long-term sealing, intelligent algorithm accuracy, and environmentally friendly insulation. Building a new power system requires the distribution network to have high reliability and strong self-healing capabilities. This necessitates that the circuit breaker not only interrupts faults but also collaborates with the backend system to achieve rapid fault location, isolation, and power restoration. Outdoor circuit breakers are exposed to complex climates such as rain, snow, dust, high temperatures, and extreme cold year-round. Traditional circuit breakers are ill-suited to this, making it crucial to enhance the equipment's fully sealed, maintenance-free, and environmentally adaptive capabilities. The greening of power equipment is a growing trend. New circuit breakers are gradually phasing out sulfur hexafluoride, which has a strong greenhouse effect, and are using environmentally friendly gases such as vacuum arc extinguishing and dry air as the insulating medium.

[0003] According to the vacuum circuit breaker proposed in patent number CN119852125A, the hydraulic pressure output by the hydraulic mechanism can be adjusted by controlling the pressure and flow direction of the liquid. Therefore, the hydraulic pressure can be output according to the actual electrodynamic force of the moving contact, so that the direction of the hydraulic pressure is opposite to that of the electrodynamic force, and the magnitude of the hydraulic pressure is greater than that of the electrodynamic force, so that the moving contact and the stationary contact are kept in contact. This solves the problem of unstable or poor contact between the moving contact and the stationary contact, and improves the closing stability of the vacuum circuit breaker. However, the contact-type connection method of this circuit breaker is prone to poor contact at the contact point, which can lead to heat accumulation. Summary of the Invention

[0004] To solve the above technical problems, the present invention is implemented through the following technical solution: A smart grid outdoor box-type high-voltage AC vacuum circuit breaker, comprising a control box, a fixed tube fixedly connected to the top of the control box, an external heat sink fixedly connected to the side of the fixed tube, a secondary tube connected to the side of the fixed tube, and a circuit breaker device fixedly connected to the inner wall of the fixed tube; the circuit breaker device comprises a vacuum tube, an inner heat sink fixedly connected to the side of the vacuum tube, an upper electrode penetrating and fixedly connected to the top of the vacuum tube, a movable device fixedly connected to the inner wall of the vacuum tube, a lower electrode slidably connected to the inner wall of the movable device, a connecting post fixedly connected to the bottom of the lower electrode, and an energy storage device fixedly connected to the top of the vacuum tube; the inner heat sink... The side is fixedly connected to the inner wall of the fixed tube. The control box controls the on / off state of the inside of the fixed tube. The fixed tube fixes the vacuum tube. The outer heat sink dissipates heat from the side of the fixed tube. The secondary tube serves as the electrode output terminal for connection. The circuit is connected along the top of the upper electrode and reaches the side of the lower electrode through the movable device, outputting along the connecting post. The inner heat sink transfers heat to the side of the vacuum tube. The vacuum tube provides a vacuum environment for the contact points of the movable device and the lower electrode, thus facilitating arc extinguishing and power interruption. The dispersed arrangement of the upper electrodes helps reduce the input load of a single circuit, and the multi-point contact between the movable device and the lower electrode ensures smooth power transmission during circuit connection. Furthermore, compared to traditional contact circuit breakers, it increases the contact area of ​​the contact points, thus facilitating the carrying of large current outputs.

[0005] Preferably, the upper electrode includes an upper electrode post, the side of which has a through hole, and an electromagnetic ring is fixedly connected to the bottom of the upper electrode post. The bottom of the electromagnetic ring is fixedly connected to the top of the movable device, and the upper electrode post penetrates the top of the inner wall of the vacuum tube and is fixedly connected to the top of the inner wall of the vacuum tube.

[0006] Preferably, the active device includes an upper top plate with an arc-shaped sliding hole at its top. An arc-shaped slider is fixedly connected to the side of the upper top plate. A conical base is rotatably connected to the bottom of the upper top plate. A straight sliding hole is opened at the top of the conical base. A straight sliding strip is fixedly connected to the side of the conical base. A contact electrode is slidably connected to the inner wall of the straight sliding hole. A guide tube is sleeved and slidably connected to the side of the upper top plate. The side of the guide tube is fixedly connected to the inner wall of the vacuum tube. The top of the upper top plate contacts the bottom of the electromagnetic ring. The upper electrode is connected to a circuit. The upper electrode supplies current to the electromagnetic ring, which generates a magnetic field to produce an attractive force. The drive and wire-through holes facilitate circuit connection. The upper top plate and conical base descend along the inner wall of the guide tube. Under the guidance of the arc-shaped sliding hole and the straight sliding hole, the upper top plate and the conical base rotate relative to each other. The relative rotation of the upper top plate and the conical base drives the arc-shaped sliding hole and the straight sliding hole to relatively squeeze the contact electrode. The contact electrode moves under the squeeze and makes contact with the side, thereby connecting the circuit. The combined action of the arc-shaped sliding hole and the straight sliding hole drives multiple sets of contact electrodes to move synchronously, which facilitates contact with the side of the lower electrode from multiple angles, thereby increasing the number of contact points and the contact area, thus facilitating the connection of large currents.

[0007] Preferably, the contact electrode includes a sliding seat, a guide plate is fixedly connected to the top side of the sliding seat, a movable end of a spring rod is fixedly connected to the top center of the sliding seat, a limit ring is fixedly connected to the fixed end of the spring rod, a contact plate is fixedly connected to the bottom of the sliding seat, the limit ring is disposed inside the arc-shaped sliding hole and slidably connected to the inner wall of the arc-shaped sliding hole, the spring rod is disposed inside the straight sliding hole and slidably connected to the inner wall of the straight sliding hole, and the side of the contact plate contacts the side of the lower electrode.

[0008] Preferably, the guide tube includes a sliding tube, the inner wall of which has a straight groove, and the portion of the inner wall of the sliding tube located on one side of the straight groove has an arc-shaped groove. The side of the sliding tube is fixedly connected to the inner wall of the vacuum tube. The upper top plate is slidably connected to the straight groove via an arc-shaped slider. The conical base is slidably connected to the inner wall of the arc-shaped groove via a straight slider. The spring rod slides along the inner wall of the straight groove under the squeezing action of the arc-shaped and straight grooves. The limiting ring restricts the sliding position of the spring rod and carries the current connection. The movement of the spring rod drives the sliding seat to move, and the movement of the sliding seat drives the guide plate to slide along the bottom of the conical base. During the sliding process, the sliding seat slides along the bottom of the conical base. During the process, the contact plate descends, and under the action of the spring rod, it moves laterally along the guide of the straight sliding hole to contact the side of the lower electrode, thus facilitating connection with the lower electrode from multiple directions. When the circuit is broken, the elastic force of the spring rod causes the contact plate to rise back, and under the elastic force of the spring rod, it rises along the bottom of the conical base, thus rising while disengaging from the side of the lower electrode, thereby facilitating the increase of distance for circuit breaking. The arc-shaped slide groove facilitates the arc-shaped slider to slide and rotate while descending along the arc-shaped slide groove. The straight slide groove guides the straight slide bar to move the conical base vertically downward, thus causing the upper top plate and the conical base to rotate relative to each other during the descent.

[0009] Preferably, the energy storage device includes a conical air guide pipe, the air inlet of which is connected to the air outlet of an air pump, the bottom of which is connected to the fixed end of a pneumatic rod, a vent hole on the side of the fixed end of the pneumatic rod, a drive plate fixedly connected to the movable end of the pneumatic rod, a return spring fixedly connected to the top of the drive plate, a return tube fixedly connected to the top of the return spring, the return tube being fixedly connected to the inner wall side of the sliding tube via a bracket, the drive plate penetrating the top of the upper top plate and rotatably connected to the upper top plate, and the drive plate penetrating the top of the conical base and rotatably connected to the conical base.

[0010] Preferably, the lower electrode includes a connecting post with a circuit-breaking groove on its side. A base is fixedly connected to the bottom of the connecting post, and the bottom of the base is fixedly connected to the top of the connecting post. The connecting post passes through the bottom of the vacuum tube and is fixedly connected to the vacuum tube. The side of the connecting post contacts the side of the contact plate. During the energy storage phase, the air pump is activated to supply air. The air pressure pushes the movable end of the pneumatic rod to descend, which in turn drives the drive plate to descend. The descent of the drive plate causes the upper top plate and the conical base to descend, thereby bringing the side of the contact plate into contact with the side of the connecting post, thus connecting the circuit. When the drive plate descends to the designated position, it releases air through the vent. The pressure is released, thus stopping the drive of the drive board. When the circuit current is too large, the magnetic force through the electromagnetic ring increases. The magnetic force generated by the electromagnetic ring drives the magnetic plate to move closer, thereby driving the drive board to move under the action of the magnetic force. The drive board rises, driving the top plate and the conical base to move, thereby disconnecting the side of the contact plate from the side of the connecting post. At the moment the current is disconnected, the drive board continues to rise under the action of the return spring, thus facilitating the continuous rise of the drive board and the continuous circuit breaking. The setting of the circuit breaking slot facilitates the disconnection of the current, increases the distance between the position near the contact point and the contact plate, thereby preventing the generation of electric arc, and facilitates reset by the operation of the air pump.

[0011] This invention provides an outdoor box-type high-voltage AC vacuum circuit breaker for smart grids. It offers the following advantages: 1. This outdoor box-type high-voltage AC vacuum circuit breaker for smart grids is equipped with a vacuum tube and mainly consists of a vacuum tube, control box, fixed tube, heat dissipation system, electrodes, and movable device. The vacuum tube provides a vacuum environment for the contact point between the movable device and the lower electrode, enabling efficient arc extinguishing and power interruption. The fixed tube is used to fix the vacuum tube, and its side is equipped with external heat sinks for heat dissipation; the vacuum tube has internal heat sinks on its side to transfer internal heat. The control box is used to control the circuit connection and disconnection inside the fixed tube. In terms of circuit connection, the current enters along the top of the upper electrode, is transmitted to the side of the lower electrode via the movable device, and is then output through the connecting post. The upper electrode adopts a distributed design, which helps reduce the input load of a single path; at the same time, the multi-point contact between the movable device and the lower electrode ensures smooth circuit connection. Compared with traditional contact circuit breakers, this increases the contact area, enabling it to carry a larger current output.

[0012] 2. This smart grid outdoor box-type high-voltage AC vacuum circuit breaker is equipped with an upper pole, which is used to connect the input circuit and deliver current to the electromagnetic ring. When energized, the electromagnetic ring generates a magnetic field and attraction, thereby driving the mechanism. The wiring hole facilitates the connection of the internal circuitry. During operation, the upper plate and conical base descend along the inner wall of the guide tube and rotate relative to each other under the guidance of the arc-shaped and straight sliding holes. This rotational motion causes the arc-shaped and straight sliding holes to press against the contact electrodes, pushing them to move laterally until they contact the side of the lower electrode, thus completing the circuit connection. Through the cooperation of the arc-shaped and straight sliding holes, multiple sets of contact electrodes can be moved simultaneously, achieving contact with the lower electrode from multiple angles, effectively increasing the number of contact points and the total contact area to support the switching of large currents.

[0013] 3. This smart grid outdoor box-type high-voltage AC vacuum circuit breaker is equipped with a straight sliding hole. In the straight sliding hole mechanism, the spring rod slides along the inner wall of the straight sliding hole under the squeezing action of the arc-shaped sliding hole and the straight sliding hole. The limiting ring is used to limit the sliding position of the spring rod and undertakes the task of current connection. When the spring rod moves, it drives the sliding seat, which in turn causes the guide plate to slide along the bottom of the conical base. During this process, the sliding seat drives the contact plate to descend, and at the same time, the spring rod, guided by the straight sliding hole, pushes the contact plate to move laterally, so that it contacts the side of the lower electrode, realizing multi-directional connection. When the circuit is broken, the elastic force of the spring rod pushes the contact plate to rise and move upward along the bottom of the conical base, increasing the breaking distance while disengaging from the side of the lower electrode, which is conducive to arc extinguishing. In addition, the arc-shaped sliding groove guides the arc-shaped slider to rotate while sliding downward, and the straight sliding groove guides the straight sliding bar to ensure that the conical base moves vertically downward, so that the upper top plate and the conical base can rotate relative to each other during the descent.

[0014] 4. This smart grid outdoor box-type high-voltage AC vacuum circuit breaker is equipped with a drive board. During the energy storage phase, an air pump is activated to supply air, using air pressure to push the movable end of the pneumatic rod downwards, causing the drive board, upper top plate, and conical base to move downwards together, so that the side of the contact plate contacts the side of the connecting post, thus connecting the circuit. When the drive board descends to the designated position, pressure is released through the vent hole, stopping the drive. If the circuit current is too large, the current flowing through the electromagnetic ring increases, the magnetic field strengthens, and the magnetic plate, under the action of magnetic force, drives the drive board upwards, causing the upper top plate and conical base to rise again, and the contact plate then separates from the connecting post. At the instant the current is disconnected, the elastic force of the return spring further pulls the drive board upwards to ensure that the circuit breaking action is completely completed. The design of the circuit breaking slot can increase the distance between the contact point and the contact plate to prevent arcing; the air pump can be used for system reset, preparing for operation again. Attached Figure Description

[0015] Figure 1 is a schematic diagram of the structure of the outdoor box-type high-voltage AC vacuum circuit breaker of the smart grid of the present invention; Figure 2 is a schematic diagram of the structure of the circuit breaking device of the present invention; Figure 3 is a schematic diagram of the structure of the upper electrode of the present invention; Figure 4 is a schematic diagram of the structure of the movable device of the present invention; Figure 5 is a schematic diagram of the structure of the contact electrode of the present invention; Figure 6 is a schematic diagram of the structure of the guide tube of the present invention; Figure 7 is a schematic diagram of the structure of the energy storage device of the present invention; Figure 8 is a schematic diagram of the structure of the lower electrode of the present invention.

[0016] In the diagram: 1. Control box; 2. Fixed pipe; 3. External heat sink; 4. Secondary pipe; 5. Circuit breaker; 501. Vacuum tube; 502. Internal heat sink; 503. Upper electrode; 504. Movable device; 505. Lower electrode; 506. Connecting post; 507. Energy storage device; 5031. Upper pole post; 5032. Wiring hole; 5033. Electromagnetic ring; 5041. Upper top plate; 5042. Arc-shaped sliding hole; 5043. Arc-shaped slider; 5044. Conical base; 5045. Straight sliding hole; 5046. Straight sliding bar; 5047. Contact electrode; 5 048. Guide tube; 50471. Sliding seat; 50472. Guide plate; 50473. Spring rod; 50474. Limiting ring; 50475. Contact plate; 50481. Sliding tube; 50482. Straight slide groove; 50483. Arc slide groove; 5071. Conical air guide tube; 5072. Air pump; 5073. Pneumatic rod; 5074. Vent hole; 5075. Return spring; 5076. Return tube; 5077. Magnetic suction plate; 5078. Drive plate; 5051. Connecting post; 5052. Circuit breaker groove; 5053. Base. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] In the first embodiment, please refer to Figures 1-2. The present invention provides a technical solution: an outdoor box-type high-voltage AC vacuum circuit breaker for smart grids, including a control box 1. A fixed tube 2 is fixedly connected to the top of the control box 1. An external heat sink 3 is fixedly connected to the side of the fixed tube 2. A secondary tube 4 is connected to the side of the fixed tube 2. A circuit breaker 5 is fixedly connected to the inner wall of the fixed tube 2. The circuit breaker 5 includes a vacuum tube 501. An internal heat sink 502 is fixedly connected to the side of the vacuum tube 501. An upper electrode 503 is fixedly connected through and to the top of the vacuum tube 501. A movable device 504 is fixedly connected to the inner wall of the vacuum tube 501. A lower electrode 505 is slidably connected to the inner wall of the movable device 504. A connecting post 506 is fixedly connected to the bottom of the lower electrode 505. An energy storage device 507 is fixedly connected to the top of the vacuum tube 501. The side of the internal heat sink 502 is fixedly connected to the inner wall of the fixed tube 2.

[0019] Control box 1 controls the on / off state of the inside of fixed tube 2. Fixed tube 2 fixes vacuum tube 501. External heat sink 3 dissipates heat from the side of fixed tube 2. Sub-tube 4 serves as the electrode output terminal for connection. The circuit is connected along the top of upper electrode 503 and reaches the side of lower electrode 505 through movable device 504, and outputs along connecting post 506. The function of internal heat sink 502 is to transfer heat to the side of vacuum tube 501. Vacuum tube 501 provides a vacuum environment for the contact points of movable device 504 and lower electrode 505, thereby facilitating arc extinguishing and power interruption. The distributed arrangement of upper electrode 503 facilitates the reduction of single-circuit input load, and the multi-point contact between movable device 504 and lower electrode 505 ensures smooth power transmission during circuit connection. Moreover, compared with traditional contact circuit breakers, the contact area of ​​the contact points is increased, thereby facilitating the carrying of large current output.

[0020] In the second embodiment, please refer to Figures 1-4. Based on the first embodiment, the present invention provides a technical solution: the upper electrode 503 includes an upper electrode post 5031, a wire hole 5032 is provided on the side of the upper electrode post 5031, an electromagnetic ring 5033 is fixedly connected to the bottom of the upper electrode post 5031, the bottom of the electromagnetic ring 5033 is fixedly connected to the top of the movable device 504, and the upper electrode post 5031 penetrates the top of the inner wall of the vacuum tube 501 and is fixedly connected to the top of the inner wall of the vacuum tube 501.

[0021] The active device 504 includes an upper top plate 5041, an arc-shaped sliding hole 5042 on the top of the upper top plate 5041, an arc-shaped slider 5043 fixedly connected to the side of the upper top plate 5041, a conical base 5044 rotatably connected to the bottom of the upper top plate 5041, a straight sliding hole 5045 on the top of the conical base 5044, a straight sliding strip 5046 fixedly connected to the side of the conical base 5044, a contact electrode 5047 slidably connected to the inner wall of the straight sliding hole 5045, a guide tube 5048 sleeved and slidably connected to the side of the upper top plate 5041, the side of the guide tube 5048 fixedly connected to the inner wall of the vacuum tube 501, and the top of the upper top plate 5041 in contact with the bottom of the electromagnetic ring 5033.

[0022] The upper pole post 5031 connects to the circuit, and the upper pole post 5031 supplies current to connect the electromagnetic ring 5033. The electromagnetic ring 5033 generates a magnetic field to produce an attractive force for driving. The wire hole 5032 facilitates the connection of the circuit. The upper top plate 5041 and the conical base 5044 descend along the inner wall of the guide tube 5048. The upper top plate 5041 and the conical base 5044 descend and rotate relative to each other under the guidance of the arc-shaped sliding hole 5042 and the straight sliding hole 5045. The upper top plate 5041 and the conical base 5044 rotate relative to each other. The rotating mechanism causes the arc-shaped sliding hole 5042 and the straight sliding hole 5045 to relatively press the contact electrode 5047. The contact electrode 5047 moves under pressure and contacts the side of the lower electrode 505, thereby connecting the circuit. The combined action of the arc-shaped sliding hole 5042 and the straight sliding hole 5045 drives multiple sets of contact electrodes 5047 to move synchronously, which facilitates contact with the side of the lower electrode 505 at multiple angles, thereby increasing the number of contact points and the contact area, and thus facilitating the connection of large currents.

[0023] In the third embodiment, please refer to Figures 1-6. Based on the second embodiment, the present invention provides a technical solution: the contact electrode 5047 includes a sliding seat 50471, a guide plate 50472 is fixedly connected to the top side of the sliding seat 50471, the movable end of a spring rod 50473 is fixedly connected to the top center of the sliding seat 50471, a limit ring 50474 is fixedly connected to the fixed end of the spring rod 50473, a contact plate 50475 is fixedly connected to the bottom of the sliding seat 50471, the limit ring 50474 is disposed inside the arc-shaped sliding hole 5042 and is slidably connected to the inner wall of the arc-shaped sliding hole 5042, the spring rod 50473 is disposed inside the straight sliding hole 5045 and is slidably connected to the inner wall of the straight sliding hole 5045, and the side of the contact plate 50475 contacts the side of the lower electrode 505.

[0024] The guide tube 5048 includes a sliding tube 50481. The inner wall of the sliding tube 50481 is provided with a straight sliding groove 50482. The portion of the inner wall of the sliding tube 50481 located on one side of the straight sliding groove 50482 is provided with an arc-shaped sliding groove 50483. The side of the sliding tube 50481 is fixedly connected to the inner wall of the vacuum tube 501. The upper top plate 5041 is slidably connected to the straight sliding groove 50482 through an arc-shaped slider 5043. The conical base 5044 is slidably connected to the inner wall of the arc-shaped sliding groove 50483 through a straight sliding strip 5046.

[0025] The spring rod 50473 slides along the inner wall of the straight sliding hole 5045 under the compression of the arc-shaped sliding hole 5042 and the straight sliding hole 5045. The limiting ring 50474 restricts the sliding position of the spring rod 50473 and carries the current connection. The movement of the spring rod 50473 drives the sliding seat 50471 to move. The movement of the sliding seat 50471 drives the guide plate 50472 to slide along the bottom of the conical base 5044. During the sliding process, the sliding seat 50471 drives the contact plate 50475 to descend. During the descent of the contact plate 50475, it moves laterally along the guide of the straight sliding hole 5045 under the action of the spring rod 50473, thereby contacting the lower electrode. The side of 505 makes contact, which facilitates connection with the lower electrode 505 from multiple directions. When the circuit is broken, the elastic force of the spring rod 50473 drives the contact plate 50475 to rise, and under the elastic force of the spring rod 50473, it rises along the bottom of the conical base 5044, thereby rising while disengaging from the side of the lower electrode 505, thus facilitating the increase of distance for circuit breaking. The arc-shaped slide groove 50483 facilitates the arc-shaped slider 5043 to slide down and rotate along the arc-shaped slide groove 50483. The straight slide groove 50482 guides the straight slide bar 5046 to move the conical base 5044 vertically downward, thereby causing the upper top plate 5041 and the conical base 5044 to rotate relative to each other during the descent.

[0026] The fourth embodiment, as shown in Figures 1-8, provides a technical solution based on the third embodiment: the energy storage device 507 includes a conical air guide pipe 5071, the air inlet of the conical air guide pipe 5071 is connected to the air outlet of the air pump 5072, the bottom of the conical air guide pipe 5071 is connected to the fixed end of the pneumatic rod 5073, the side of the fixed end of the pneumatic rod 5073 is provided with a vent hole 5074, the movable end of the pneumatic rod 5073 is fixedly connected to a drive plate 5078, the top of the drive plate 5078 is fixedly connected to a pull-back spring 5075, the top of the pull-back spring 5075 is fixedly connected to a return tube 5076, the return tube 5076 is fixedly connected to the inner wall side of the sliding tube 50481 through a bracket, the drive plate 5078 penetrates the top of the upper top plate 5041 and is rotatably connected to the upper top plate 5041, and the drive plate 5078 penetrates the top of the conical base 5044 and is rotatably connected to the conical base 5044.

[0027] The lower electrode 505 includes a connecting post 5051, a circuit breaker groove 5052 is provided on the side of the connecting post 5051, a base 5053 is fixedly connected to the bottom of the connecting post 5051, the bottom of the base 5053 is fixedly connected to the top of the connecting post 506, the connecting post 506 passes through the bottom of the vacuum tube 501 and is fixedly connected to the vacuum tube 501, and the side of the connecting post 5051 contacts the side of the contact plate 50475.

[0028] During the energy storage phase, air pump 5072 is activated to supply air. The air pressure pushes the movable end of pneumatic rod 5073 to descend, which in turn drives drive plate 5078 to descend. The descent of drive plate 5078 causes upper top plate 5041 and conical base 5044 to descend, thereby bringing the side of contact plate 50475 into contact with the side of connecting post 5051, thus connecting the circuit. When drive plate 5078 descends to the designated position, pressure is released through vent hole 5074, thereby stopping the drive of drive plate 5078. When the circuit current is too high, the magnetic force of electromagnetic ring 5033 increases, and the magnetic force generated by electromagnetic ring 5033 drives magnetic suction plate. 5077 moves closer, thereby driving the drive plate 5078 to move under the action of magnetic force. The drive plate 5078 rises, driving the upper top plate 5041 and the conical base 5044 to move, thereby disconnecting the side of the contact plate 50475 from the side of the connecting post 5051. At the moment of current disconnection, the drive plate 5078 continues to rise under the elastic force of the return spring 5075, thus facilitating the continuous rise of the drive plate 5078 and facilitating continuous circuit breaking. The setting of the circuit breaking groove 5052 facilitates the disconnection of current, increases the distance between the position near the contact point and the contact plate 50475, thereby preventing the generation of electric arc, and facilitates reset by the operation of the air pump 5072.

[0029] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A smart grid outdoor box-type high-voltage AC vacuum circuit breaker, characterized in that: The system includes a control box (1), a fixed tube (2) fixedly connected to the top of the control box (1), an external heat sink (3) fixedly connected to the side of the fixed tube (2), a secondary tube (4) connected to the side of the fixed tube (2), and a circuit breaker (5) fixedly connected to the inner wall of the fixed tube (2). The circuit breaker (5) includes a vacuum tube (501), an internal heat sink (502) fixedly connected to the side of the vacuum tube (501), an upper electrode (503) connected through and fixedly connected to the top of the vacuum tube (501), a movable device (504) fixedly connected to the inner wall of the vacuum tube (501), a lower electrode (505) slidably connected to the inner wall of the movable device (504), a connecting column (506) fixedly connected to the bottom of the lower electrode (505), an energy storage device (507) fixedly connected to the top of the vacuum tube (501), and the side of the internal heat sink (502) fixedly connected to the inner wall of the fixed tube (2).

2. The smart grid outdoor box-type high-voltage AC vacuum circuit breaker according to claim 1, characterized in that: The upper electrode (503) includes an upper electrode post (5031), and a wire hole (5032) is provided on the side of the upper electrode post (5031). An electromagnetic ring (5033) is fixedly connected to the bottom of the upper electrode post (5031). The bottom of the electromagnetic ring (5033) is fixedly connected to the top of the movable device (504). The upper electrode post (5031) penetrates the top of the inner wall of the vacuum tube (501) and is fixedly connected to the top of the inner wall of the vacuum tube (501).

3. The smart grid outdoor box-type high-voltage AC vacuum circuit breaker according to claim 1, characterized in that: The active device (504) includes an upper top plate (5041), an arc-shaped sliding hole (5042) is provided on the top of the upper top plate (5041), an arc-shaped slider (5043) is fixedly connected to the side of the upper top plate (5041), a conical base (5044) is rotatably connected to the bottom of the upper top plate (5041), a straight sliding hole (5045) is provided on the top of the conical base (5044), a straight sliding bar (5046) is fixedly connected to the side of the conical base (5044), a contact electrode (5047) is slidably connected to the inner wall of the straight sliding hole (5045), a guide tube (5048) is sleeved and slidably connected to the side of the upper top plate (5041), the side of the guide tube (5048) is fixedly connected to the inner wall side of the vacuum tube (501), and the top of the upper top plate (5041) is in contact with the bottom of the electromagnetic ring (5033).

4. The smart grid outdoor box-type high-voltage AC vacuum circuit breaker according to claim 3, characterized in that: The contact electrode (5047) includes a sliding seat (50471), a guide plate (50472) is fixedly connected to the top side of the sliding seat (50471), the movable end of a spring rod (50473) is fixedly connected to the top center of the sliding seat (50471), a limit ring (50474) is fixedly connected to the fixed end of the spring rod (50473), a contact plate (50475) is fixedly connected to the bottom of the sliding seat (50471), the limit ring (50474) is disposed inside the arc-shaped sliding hole (5042) and is slidably connected to the inner wall of the arc-shaped sliding hole (5042), the spring rod (50473) is disposed inside the straight sliding hole (5045) and is slidably connected to the inner wall of the straight sliding hole (5045), and the side of the contact plate (50475) contacts the side of the lower electrode (505).

5. The smart grid outdoor box-type high-voltage AC vacuum circuit breaker according to claim 3, characterized in that: The guide tube (5048) includes a sliding tube (50481), the inner wall of which is provided with a straight sliding groove (50482), and the inner wall of which is provided with an arc-shaped sliding groove (50483) on one side of the straight sliding groove (50482). The side of the sliding tube (50481) is fixedly connected to the inner wall of the vacuum tube (501). The upper top plate (5041) is slidably connected to the straight sliding groove (50482) through an arc-shaped slider (5043). The conical base (5044) is slidably connected to the inner wall of the arc-shaped sliding groove (50483) through a straight sliding strip (5046).

6. The smart grid outdoor box-type high-voltage AC vacuum circuit breaker according to claim 3, characterized in that: The energy storage device (507) includes a conical air guide pipe (5071), the air inlet of the conical air guide pipe (5071) is connected to the air outlet of an air pump (5072), the bottom of the conical air guide pipe (5071) is connected to the fixed end of a pneumatic rod (5073), a vent hole (5074) is provided on the side of the fixed end of the pneumatic rod (5073), a drive plate (5078) is fixedly connected to the movable end of the pneumatic rod (5073), a return spring (5075) is fixedly connected to the top of the drive plate (5078), and a return tube (5076) is fixedly connected to the top of the return spring (5075).

7. A smart grid outdoor box-type high-voltage AC vacuum circuit breaker according to claim 6, characterized in that: The return tube (5076) is fixedly connected to the inner wall side of the sliding tube (50481) through the bracket. The drive plate (5078) passes through the top of the upper top plate (5041) and is rotatably connected to the upper top plate (5041). The drive plate (5078) passes through the top of the conical base (5044) and is rotatably connected to the conical base (5044).

8. A smart grid outdoor box-type high-voltage AC vacuum circuit breaker according to claim 4, characterized in that: The lower electrode (505) includes a connecting post (5051), a circuit breaker groove (5052) is provided on the side of the connecting post (5051), and a base (5053) is fixedly connected to the bottom of the connecting post (5051).

9. A smart grid outdoor box-type high-voltage AC vacuum circuit breaker according to claim 8, characterized in that: The bottom of the base (5053) is fixedly connected to the top of the connecting post (506), the connecting post (506) passes through the bottom of the vacuum tube (501) and is fixedly connected to the vacuum tube (501), and the side of the connecting post (5051) contacts the side of the contact plate (50475).

Images