Quick breaking high-voltage vacuum circuit breaker

Abstract

A rapid breaking high-voltage vacuum circuit breaker disclosed by the present invention comprises an operation box body and vacuum arc-extinguishing chambers installed at the left side and the right side of the top of the operation box body, movable conductive blocks are arranged in the vacuum arc-extinguishing chambers, and movable conductive plates are arranged at the positions, corresponding to the conductive blocks, in the operation box body. A servo motor is installed on the back face of the inner wall of the operation box body, a rotating protruding block is installed on the surface of an output shaft of the servo motor, the rotating protruding block is driven by the servo motor to rotate, a conductive block can move downwards to achieve breaking, and an air blower is installed on the right side of the inner wall of the operation box body. According to the invention, the servo motor drives the rotating convex block to rotate, so that the moving plate can drive the conductive plate to move downwards through the movable plate, and the conductive plate drives the conductive block to be separated from the conductive contact through the conductive rod, so that the breaking effect can be quickly realized, and the electric arc can be quickly extinguished; and moreover, the switching-on or switching-off operation can be quickly realized without manual operation, and the safety is improved at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of high-voltage vacuum circuit breakers, in particular to a fast-breaking high-voltage vacuum circuit breaker. Background Art

[0002] The high-voltage vacuum circuit breaker is named because its arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are both high vacuum; it has the advantages of small size, light weight, suitable for frequent operation, and no need for maintenance after arc extinguishing, and is widely used in distribution networks.

[0003] According to the application number: CN202221180138.0, an outdoor high-voltage vacuum circuit breaker includes a disconnecting operation box, a buffer protection unit and an adjusting unit; the disconnecting operation box: vacuum arc extinguishing chambers are arranged in the openings uniformly arranged laterally on the upper end thereof, and a conductive frame uniformly distributed laterally is arranged on the front end inclined surface of the disconnecting operation box, and the output end of the sliding conductive column of the vacuum arc extinguishing chamber is electrically connected to the input end of the conductive frame; the buffer protection unit: slidably connected to the lower end inner cavity of the disconnecting operation box, and the buffer protection unit is fixedly connected to the top wall surface of the lower end cavity of the disconnecting operation box; the adjusting unit: includes a fixing plate, a rectangular sliding sleeve and a locking bolt, the fixing plate is symmetrically arranged laterally on the lower surface of the buffer protection unit, and the outer lower end of the fixing plate is slidably connected with a rectangular sliding sleeve.

[0004] The high-voltage vacuum circuit breaker in the above case does not have a fast-breaking effect and cannot quickly extinguish the arc. Moreover, when the opening is not complete, the fault cannot be quickly cut off, which can easily cause contact burnout and increase safety hazards. For this reason, we provide a fast-breaking high-voltage vacuum circuit breaker. Summary of the invention

[0005] The object of the present invention is to provide a fast-breaking high-voltage vacuum circuit breaker to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fast-breaking high-voltage vacuum circuit breaker, comprising an operating box, and vacuum arc extinguishing chambers installed on the left and right sides of the top of the operating box, a movable conductive block is arranged inside the vacuum arc extinguishing chamber, a movable conductive plate is arranged inside the operating box and at the position corresponding to the conductive block, a servo motor is installed on the back of the inner wall of the operating box, a rotating protrusion is installed on the surface of the output shaft of the servo motor, and the rotating protrusion is driven by the servo motor to rotate, so that the conductive block can move downward to achieve disconnection, and a hair dryer is installed on the right side of the inner wall of the operating box.

[0007] Preferably, it also includes spacers, two of which are respectively installed on the top of the inner wall of the operating box, support blocks are installed on the left and right sides of the inner wall of the operating box and on the side away from the two spacers, a fixing rod is installed on the top of the support block, and the top of the fixing rod is fixedly connected to the top of the inner wall of the operating box.

[0008] Preferably, an insulating slider is slidably connected to the surface of the fixing rod, a side of the insulating slider close to the conductive plate is fixedly connected to the conductive plate, and a buffer spring is sleeved on the surface of the fixing rod.

[0009] Preferably, the top of the conductive plate is fixedly connected to the bottom of the conductive block through a conductive rod, a conductive contact block in contact with the conductive block is installed on the top of the inner wall of the vacuum arc extinguishing chamber, and an output interface electrically connected to the conductive contact block is installed on the top of the vacuum arc extinguishing chamber.

[0010] Preferably, positioning rods are installed on both sides of the left and right inner walls of the operating box, and a moving block is slidably connected to the surface of the positioning rods. A movable plate is installed on the top of the moving block, and an adjusting block is installed on the movable plate on the right side. A first pulley is installed on the bottom of the left partition block, and a first traction rope is installed on the right movable plate and at a position corresponding to the first pulley, and an end of the first traction rope close to the first pulley passes through the first pulley and extends to the outside thereof and is fixedly connected to the adjusting block.

[0011] Preferably, a movable plate is provided inside the operating box and on the right side of the rotating protrusion, a ball is rotatably connected in the groove on the left side of the movable plate, a concave plate is installed on the right side of the movable plate, and a mounting plate is installed on the back side of the inner wall of the operating box and on the right side of the concave plate.

[0012] Preferably, four connecting rods are installed on the left side of the mounting plate, the left end of the connecting rod passes through the concave plate and extends into the interior thereof, a movable block is provided inside the concave plate, the left end of the connecting rod is fixedly connected to the right side of the block, a connecting spring is sleeved on the surface of the connecting rod, the side of the movable plate close to the adjusting block is fixedly connected to the adjusting block through a stabilizing block, second pulleys are installed on the left and right sides of the inner wall of the operating box, a second traction rope is installed on the side of the movable plate close to the second pulley, an end of the second traction rope away from the movable plate passes through the second pulley and extends to the outside thereof and is fixedly connected to the bottom of the conductive plate.

[0013] Preferably, an air guide cavity is opened inside the operating box, the bottom of the hair dryer is connected to the air guide cavity through a fixed tube, a plurality of air guide ports are opened on the top of the air guide cavity, a heat dissipation port is opened on the left side of the operating box, a dustproof net is installed on the left side of the operating box, and a dustproof groove is installed on the right side of the operating box and corresponding to the position of the hair dryer.

[0014] Preferably, the bottom conductive mounting block of the inner wall of the operating box has conductive wires installed on both sides of the left and right sides of the conductive mounting block, a through slot is opened on the top of the movable plate, the top of the conductive wire passes through the through slot and extends to the outside to be fixedly connected with the bottom of the conductive plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention drives the rotating protrusion to rotate through a servo motor, so that the movable plate can drive the conductive plate to move downward through the movable plate. The conductive plate drives the conductive block and the conductive contact to separate through the conductive rod, so that the breaking effect can be quickly achieved, which is conducive to quickly extinguishing the arc, and the closing or opening operation can be quickly achieved without manual operation, while improving safety.

[0016] 2. The present invention starts the hair dryer to cool and dissipate heat inside the operating box, thereby reducing the impact on the structure inside the operating box in a high-temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a structural cross-sectional view of the front view of the present invention; Figure 3 It is a structural cross-sectional view of the front view of the operating box, the conductive plate, the servo motor, the second pulley and the second traction rope of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the servo motor, the rotating convex block, the moving plate and the ball bearing of the present invention; Figure 5 It is a three-dimensional structural schematic diagram of the concave plate, the mounting plate and the connecting spring of the present invention; Figure 6 It is a three-dimensional structural schematic diagram of the movable plate and the through slot of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the conductive plate, the insulating slider and the conductive rod of the present invention; Figure 8 It is a structural cross-sectional view of the front view of the servo motor, rotating protrusion, connecting spring and stabilizing block of the present invention.

[0018] In the figure: 1 operating box, 2 vacuum interrupter, 3 conductive block, 4 conductive plate, 5 servo motor, 6 rotating convex block, 7 blower, 8 spacer, 9 support block, 10 fixed rod, 11 insulating slider, 12 buffer spring, 13 conductive rod, 14 conductive contact block, 15 output interface, 16 positioning rod, 17 moving block, 18 movable plate, 19 adjusting block, 20 first pulley, 200 first traction rope, 21 moving plate, 22 ball, 23 concave plate, 24 mounting plate, 25 connecting rod, 26 stopper, 27 connecting spring, 28 stabilizing block, 29 air guide cavity, 30 fixed pipe, 31 air guide port, 311 temperature sensor, 32 heat dissipation port, 33 dust net, 34 dust groove, 35 conductive mounting block, 36 conductive wire, 37 through groove, 38 input interface, 39 inspection door, 310 fixing bolt, 41 second pulley, 42 second traction rope. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-8 A fast-breaking high-voltage vacuum circuit breaker comprises an operating box 1, and vacuum interrupter chambers 2 installed on the left and right sides of the top of the operating box 1. A movable conductive block 3 is arranged inside the vacuum interrupter chamber 2, and a movable conductive plate 4 is arranged inside the operating box 1 and at a position corresponding to the conductive block 3. A servo motor 5 is fixedly connected to the back of the inner wall of the operating box 1, and a rotating protrusion 6 is fixedly connected to the surface of the output shaft of the servo motor 5. The rotating protrusion 6 is driven by the servo motor 5 to rotate, so that the conductive block 3 can move downward to achieve disconnection, and a hair dryer 7 is fixedly connected to the right side of the inner wall of the operating box 1.

[0021] Furthermore, an inspection door 39 is provided on the front of the operating box 1, and two fixing bolts 310 threadedly connected to the operating box 1 are provided on the front of the inspection door 39. By providing the inspection door 39 and the fixing bolts 310, maintenance and inspection of the internal structure of the operating box 1 are facilitated.

[0022] Specifically, by loosening the fixing bolts 310 , the inspection door 39 can be opened to facilitate maintenance of the internal structure of the operating box 1 .

[0023] It also includes spacer blocks 8, two of which are respectively installed on the top of the inner wall of the operating box 1, and support blocks 9 are fixedly connected to the left and right sides of the inner wall of the operating box 1 and the side away from the two spacer blocks 8, and a fixing rod 10 is fixedly connected to the top of the support block 9, and the top of the fixing rod 10 is fixedly connected to the top of the inner wall of the operating box 1, and an insulating slider 11 is slidably connected to the surface of the fixing rod 10, and the side of the insulating slider 11 close to the conductive plate 4 is fixedly connected to the conductive plate 4, and a buffer spring 12 is sleeved on the surface of the fixing rod 10.

[0024] Furthermore, a temperature sensor 311 is fixedly connected to the top of the inner wall of the operating box 1 , and a controller is fixedly connected to the right partition block 8 , so that the temperature inside the operating box 1 is sensed by the temperature sensor 311 .

[0025] By starting the hair dryer 7, the interior of the operating box 1 can be cooled and the heat can be dissipated, thereby reducing the impact on the structure inside the operating box 1 in a high temperature environment.

[0026] The top of the conductive plate 4 is fixedly connected to the bottom of the conductive block 3 through a conductive rod 13, the top of the inner wall of the vacuum arc chamber 2 is fixedly connected to a conductive contact block 14 that is in contact with the conductive block 3, and the top of the vacuum arc chamber 2 is fixedly connected to an output interface 15 that is electrically connected to the conductive contact block 14.

[0027] Positioning rods 16 are fixedly connected to the left and right sides of the inner wall of the operating box 1, and a moving block 17 is slidably connected to the surface of the positioning rod 16. A movable plate 18 is fixedly connected to the top of the moving block 17, and an adjusting block 19 is fixedly connected to the movable plate 18 on the right side. A first pulley 20 is fixedly connected to the bottom of the left partition block 8, and a first traction rope 200 is fixedly connected to the position of the right movable plate 18 and corresponding to the first pulley 20. The end of the first traction rope 200 close to the first pulley 20 passes through the first pulley 20 and extends to the outside thereof and is fixedly connected to the adjusting block 19. A movable plate 21 is provided inside the operating box 1 and on the right side of the rotating protrusion 6. A ball 22 is rotatably connected in the groove on the left side of the movable plate 21, and the end of the ball 22 close to the rotating protrusion 6 is in rolling contact with the rotating protrusion 6. A concave plate 23 is fixedly connected to the right side of the movable plate 21. A mounting plate 24 is fixedly connected to the back of the inner wall of the box body 1 and is located on the right side of the recessed plate 23. Four connecting rods 25 are fixedly connected to the left side of the mounting plate 24. The left end of the connecting rod 25 passes through the recessed plate 23 and extends into the interior thereof. A movable stopper 26 is provided inside the recessed plate 23. The surface of the stopper 26 contacts the inner wall of the recessed plate 23. The left end of the connecting rod 25 is fixedly connected to the right side of the stopper 26. A connecting spring 27 is sleeved on the surface of the connecting rod 25. The side of the movable plate 21 close to the adjusting block 19 is fixedly connected to the adjusting block 19 through a stabilizing block 28. Second pulleys 41 are fixedly connected to the left and right sides of the inner wall of the operating box body 1. A second traction rope 42 is fixedly connected to the side of the movable plate 18 close to the second pulley 41. The end of the second traction rope 42 away from the movable plate 18 passes through the second pulley 41 and extends to the outside thereof and is fixedly connected to the bottom of the conductive plate 4.

[0028] An air guide cavity 29 is provided inside the operating box 1, the bottom of the hair dryer 7 is connected to the air guide cavity 29 through a fixed tube 30, a plurality of air guide ports 31 are provided on the top of the air guide cavity 29, a heat dissipation port 32 is provided on the left side of the operating box 1, a dustproof net 33 is fixedly connected to the left side of the operating box 1, and a dustproof groove 34 is fixedly connected to the right side of the operating box 1 and corresponding to the position of the hair dryer 7.

[0029] Furthermore, by providing the dustproof net 33 and the dustproof groove 34 , the dustproof effect of the operating box 1 is improved, and external dust is prevented from entering the interior of the operating box 1 .

[0030] Specifically, the temperature inside the operating box 1 is sensed by the temperature sensor 311. When the temperature is higher than the set value, the signal is transmitted to the controller, and the controller immediately starts the hair dryer 7. The hair dryer 7 blows gas through the air guide port 31 through the fixed tube 30 and the air guide cavity 29, thereby cooling and dissipating the interior of the operating box 1.

[0031] Furthermore, the servo motor 5, the hair dryer 7 and the temperature sensor 311 are electrically connected to the controller respectively, and the controller is electrically connected to the external user end.

[0032] A conductive mounting block 35 is provided at the bottom of the inner wall of the operating box 1, and conductive wires 36 are fixedly connected to the left and right sides of the conductive mounting block 35. A through slot 37 is provided at the top of the movable plate 18, and the top of the conductive wire 36 passes through the through slot 37 and extends to the outside thereof to be fixedly connected to the bottom of the conductive plate 4. The conductive wire 36 is relatively long and will not affect the movement of the conductive plate 4. Two input interfaces 38 electrically connected to the conductive mounting block 35 are fixedly connected to the front of the operating box 1. The input interface 38 is connected via a cable, and the output interface 15 is connected via a cable.

[0033] The servo motor 5 drives the rotating protrusion 6 to rotate, so that the movable plate 21 can drive the conductive plate 4 to move downward through the movable plate 18. The conductive plate 4 drives the conductive block 3 and the conductive contact to separate through the conductive rod 13, so that the breaking effect can be quickly achieved, which is conducive to quickly extinguishing the arc, and the closing or opening operation can be quickly achieved without manual operation, while improving safety.

[0034] When in use, the servo motor 5 is started, and the servo motor 5 drives the rotating protrusion 6 to rotate 90 degrees clockwise through the output shaft. When the protruding end of the rotating protrusion 6 contacts the ball 22 on the movable plate 21, the rotating protrusion 6 drives the movable plate 21 to move rightward, and the movable plate 21 drives the concave plate 23 to squeeze the connecting spring 27 to the right to move. The movable plate 21 drives the adjusting block 19 to move rightward through the stabilizing block 28, and the adjusting block 19 drives the movable plate 18 on the left to move rightward. The adjusting block 19 drives the movable plate 18 on the right to move leftward through the first traction rope 200, and the movable plate 18 drives the conductive plate 4 to move downward through the second traction rope 42. The conductive plate 4 drives the insulating slider 11 to squeeze the buffer spring 12 downward to move, and the conductive plate 4 drives the conductive block 3 and the conductive contact block 14 to separate through the conductive rod 13, thereby completing the effect of opening the gate. When the switch needs to be closed, the servo motor 5 is started, and the servo motor 5 drives the rotating protrusion 6 to rotate 90 degrees clockwise through the output shaft. When the protruding end of the rotating protrusion 6 is separated from the moving plate 21, the connecting spring 27 drives the moving plate 21 to move leftward through the concave plate 23 through the restoring elastic force of the connecting spring 27, so that the ball 22 always maintains a state of rolling contact with the rotating protrusion 6; When the movable plate 21 moves to the left, the movable plate 18 on the left moves to the left. At the same time, the restoring force of the buffer spring 12 causes the movable plate 18 on the right to move to the right. The conductive plate 4 drives the conductive block 3 to move upward through the conductive rod 13. The conductive block 3 and the conductive contact block 14 contact each other, and the closing effect is achieved.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fast-breaking high-voltage vacuum circuit breaker, characterized in that: The invention comprises an operating box (1), and vacuum interrupter chambers (2) installed on the left and right sides of the top of the operating box (1); a movable conductive block (3) is arranged inside the vacuum interrupter chamber (2); a movable conductive plate (4) is arranged inside the operating box (1) and at a position corresponding to the conductive block (3); a servo motor (5) is installed on the back of the inner wall of the operating box (1); a rotating protrusion (6) is installed on the surface of the output shaft of the servo motor (5); the rotating protrusion (6) is driven by the servo motor (5) to rotate, so that the conductive block (3) can move downward to achieve disconnection; and a blower (7) is installed on the right side of the inner wall of the operating box (1).

2. A fast-breaking high-voltage vacuum circuit breaker according to claim 1, characterized in that: It also includes a spacer block (8), the number of which is two and which are respectively mounted on the top of the inner wall of the operating box (1), and support blocks (9) are mounted on the left and right sides of the inner wall of the operating box (1) and on the side away from the two spacers (8), and a fixing rod (10) is mounted on the top of the support block (9), and the top end of the fixing rod (10) is fixedly connected to the top of the inner wall of the operating box (1).

3. A fast-breaking high-voltage vacuum circuit breaker according to claim 2, characterized in that: An insulating slider (11) is slidably connected to the surface of the fixing rod (10); a side of the insulating slider (11) close to the conductive plate (4) is fixedly connected to the conductive plate (4); and a buffer spring (12) is sleeved on the surface of the fixing rod (10).

4. A fast-breaking high-voltage vacuum circuit breaker according to claim 3, characterized in that: The top of the conductive plate (4) is fixedly connected to the bottom of the conductive block (3) via a conductive rod (13); a conductive contact block (14) in contact with the conductive block (3) is installed on the top of the inner wall of the vacuum interrupter (2); and an output interface (15) electrically connected to the conductive contact block (14) is installed on the top of the vacuum interrupter (2).

5. A fast-breaking high-voltage vacuum circuit breaker according to claim 4, characterized in that: Positioning rods (16) are installed on both left and right sides of the inner wall of the operating box (1); a moving block (17) is slidably connected to the surface of the positioning rod (16); a movable plate (18) is installed on the top of the moving block (17); an adjusting block (19) is installed on the movable plate (18) on the right side; a first pulley (20) is installed on the bottom of the left spacer (8); a first traction rope (200) is installed on the right movable plate (18) and at a position corresponding to the first pulley (20); an end of the first traction rope (200) close to the first pulley (20) passes through the first pulley (20) and extends to the outside thereof to be fixedly connected to the adjusting block (19).

6. A fast-breaking high-voltage vacuum circuit breaker according to claim 5, characterized in that: A movable plate (21) is arranged inside the operating box (1) and on the right side of the rotating protrusion (6); a ball (22) is rotatably connected in a groove on the left side of the movable plate (21); a concave plate (23) is installed on the right side of the movable plate (21); and a mounting plate (24) is installed on the back side of the inner wall of the operating box (1) and on the right side of the concave plate (23).

7. A fast-breaking high-voltage vacuum circuit breaker according to claim 6, characterized in that: Four connecting rods (25) are installed on the left side of the mounting plate (24). The left ends of the connecting rods (25) penetrate the concave plate (23) and extend into the interior thereof. A movable stopper (26) is arranged inside the concave plate (23). The left ends of the connecting rods (25) are fixedly connected to the right side of the stopper (26). A connecting spring (27) is sleeved on the surface of the connecting rod (25). The side of the movable plate (21) close to the adjustment block (19) is fixedly connected to the adjustment block (19) via a stabilizing block (28). Second pulleys (41) are installed on both the left and right sides of the inner wall of the operating box (1). A second traction rope (42) is installed on the side of the movable plate (18) close to the second pulley (41). The end of the second traction rope (42) away from the movable plate (18) passes through the second pulley (41) and extends to the outside thereof to be fixedly connected to the bottom of the conductive plate (4).

8. A fast-breaking high-voltage vacuum circuit breaker according to claim 7, characterized in that: An air guide cavity (29) is provided inside the operating box (1); the bottom of the hair dryer (7) is connected to the air guide cavity (29) via a fixing tube (30); a plurality of air guide ports (31) are provided at the top of the air guide cavity (29); and a heat dissipation port (32) is provided on the left side of the operating box (1).

9. A fast-breaking high-voltage vacuum circuit breaker according to claim 8, characterized in that: A conductive mounting block (35) is provided at the bottom of the inner wall of the operating box (1), and conductive wires (36) are installed on both the left and right sides of the conductive mounting block (35). A through slot (37) is provided at the top of the movable plate (18), and the top of the conductive wire (36) passes through the through slot (37) and extends to the outside to be fixedly connected to the bottom of the conductive plate (4). Two input interfaces (38) electrically connected to the conductive mounting block (35) are installed on the front of the operating box (1).

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