Zero-crossing break high-voltage vacuum circuit breaker

Abstract

The application relates to the technical field of high-voltage vacuum circuit breakers, in particular to a zero-crossing breaking high-voltage vacuum circuit breaker which comprises a central control box, supporting frames, insulating cylinders, an operation box, a switch door, heat dissipation holes, an observation port, an observation window, a guide pipe, an extension pipe and mounting blocks, a plurality of insulating cylinders are fixedly installed at the top end of the central control box, and the bottom end of the central control box is fixedly provided with the supporting frames on the two sides. When the switch door does not need to be opened, the inside of the operation box can be checked through the observation window; through the cooperation of the guide pipe, the extension pipe, the mounting blocks, the monitoring camera, the micro hydraulic cylinder and the knob, the micro hydraulic cylinder is driven to run to drive the extension rod to move, the spring is further driven to move to exert a downward pressure on the mounting blocks, the extension pipe is elongated after being stressed, the monitoring camera arranged on the mounting blocks is driven to move downward, and the inside observation position can be adjusted through the movement of the monitoring camera.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-voltage vacuum circuit breakers, and particularly relates to a zero-crossing breaking high-voltage vacuum circuit breaker. BACKGROUND

[0002] A vacuum circuit breaker is named because its arc-extinguishing medium and the insulating medium between the contacts after arc extinguishing are both high vacuum; the vacuum circuit breaker has the advantages of small size, light weight, frequent operation, and arc-extinguishing without maintenance, and is widely used in power distribution networks. The vacuum circuit breaker can be used for protection and control of electrical equipment in industrial and mining enterprises, power plants and substations, and is particularly suitable for use in places requiring oil-free, less maintenance and frequent operation. The circuit breaker can be configured in a middle cabinet, a double-layer cabinet and a fixed cabinet for controlling and protecting high-voltage electrical equipment. The zero-crossing breaking technology has great technical advantages compared with AC contactors, thyristors or solid-state relays, and it takes the advantages of both and overcomes the shortcomings of the two alone, ensuring zero-current switching, no inrush current and no sintering of contacts.

[0003] However, the structure of the existing zero-crossing breaking high-voltage vacuum circuit breaker is not perfect and still has some defects.

[0004] The existing vacuum circuit breaker is generally installed outdoors and needs to be regularly maintained by maintenance personnel. Since the internal structure of the circuit breaker is complex, any internal problems will affect the normal operation of the device if it is not regularly maintained. If the central control part of the circuit breaker is easy to open, it may lead to theft, and if it is not easy to open, it will affect the maintenance efficiency, and has certain limitations.

[0005] When installing the circuit breaker, the stability of the circuit breaker needs to be maintained. Since it needs to be connected with an external power supply line, if the shell is aged and corroded during installation, the installation position of the circuit breaker will be offset, which may cause certain pulling and breaking of the connection part with the outside, and thus has certain danger. SUMMARY

[0006] The purpose of the present application is to provide a zero-crossing breaking high-voltage vacuum circuit breaker.

[0007] In order to achieve the above purpose, the present application adopts the following technical solutions:

[0008] The utility model provides a zero-crossing breaking high-voltage vacuum circuit breaker, including central control box, support frame, insulating cylinder, operation box, switch door, louvre, observation port, observation window, guide pipe, telescopic pipe, mounting block, micro hydraulic cylinder, telescopic rod, spring, knob, display screen, movable cover, first curtain, second curtain, shield frame, baffle, clamping block, slide rail, supporting plate, limiting strip, clamping groove, holding box, placing cavity, back plate, panel, recess, rolling ball, contact button, siren and monitoring camera, a plurality of insulating cylinders are fixedly installed to the top of central control box, support frame is fixedly installed to the both sides of central control box bottom, the middle part of central control box bottom is fixedly installed operation box, and the side of operation box is hinged with switch door, and the top of switch door is provided with observation port, and the top of observation port inner wall is fixedly installed with observation window, and the bottom of observation window is slidably connected with guide pipe, and one end of guide pipe is fixedly connected with telescopic pipe, and the bottom of telescopic pipe is fixedly connected with mounting block.

[0009] Preferably, the back of the mounting block is fixedly installed with a monitoring camera, and the front of the observation window is fixedly installed with a display screen.

[0010] Preferably, one end of the guide pipe is fixedly installed with a micro hydraulic cylinder, the output end of the micro hydraulic cylinder is fixedly connected with a telescopic rod, one end of the telescopic rod is fixedly connected with a spring, and one end of the spring penetrates through the inside of the telescopic pipe and is fixedly connected with the top end of the mounting block.

[0011] Preferably, a knob is fixedly penetrated through one end of the outer wall of the guide pipe, and the micro hydraulic cylinder is located inside the knob.

[0012] Preferably, the outer wall of the guide pipe is sleeved with a movable cover, the top end and the bottom end of the movable cover are slidably connected with the bottom end of the observation window and the bottom end of the inner wall of the observation port respectively, one end of the movable cover is fixedly connected with a first curtain, the other end of the movable cover is fixedly connected with a second curtain, and one end of the first curtain and the second curtain is fixedly connected with the inner wall of the observation port.

[0013] Preferably, the front of the switch door is fixedly installed with a shield frame, the top of the outer wall of the shield frame is rotatably connected with a baffle, and the bottom end of the baffle is fixedly connected with a plurality of clamping blocks.

[0014] Preferably, the bottom of the shield frame is provided with a limiting strip, a plurality of clamping grooves are formed in the top end of the limiting strip, the inner walls of the clamping grooves are clamped and fixed with the inner walls of the adjacent clamping blocks, the both sides of the bottom of the shield frame are provided with slide rails, the inner walls of the two slide rails are slidably connected with sliding blocks, the adjacent ends of the two sliding blocks are fixedly connected with the both ends of the limiting strip respectively, the bottom ends of the two slide rails are fixedly connected with supporting plates, the both sides of the bottom end of the limiting strip are in contact with the top of the supporting plate respectively, and the back surfaces of the two slide rails are fixedly connected with the front surface of the switch door.

[0015] Preferably, the top of the side of the two support frames not adjacent to each other is fixedly provided with a holding box, the inside of the two holding boxes is provided with a placing cavity, the side of the two holding boxes adjacent to each other is fixedly connected with a back plate, and the side of the two holding boxes not adjacent to each other is fixedly connected with a face plate.

[0016] Preferably, the middle of the bottom end of the two placing cavities is provided with a groove, the top end of the two grooves is provided with a rolling ball, the two ends of the two placing cavities are fixedly provided with a contact button, the two sides of the top end of the two holding boxes are fixedly provided with an alarm, and the four alarms are electrically connected with an external power supply through the contact button.

[0017] The present application has at least the following advantages:

[0018] The present application has at least the following advantages:

[0019] The present application has at least the following advantages: BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 is a schematic view of the present application;

[0022] Figure 2 is a schematic view of the structure of the operating box in the present application;

[0023] Figure 3 is a schematic view of the back structure of the switch door in the present application;

[0024] Figure 4 is a schematic view of the front structure of the switch door in the present application;

[0025] Figure 5 is a schematic view of the partial structure of the present application;

[0026] Figure 6 is a schematic view of the partial sectional structure of the conduit in the present application;

[0027] Figure 7 is a schematic view of the partial split structure of the present application.

[0028] In the figure: 1, central control box; 2, support frame; 3, insulating cylinder; 4, operating box; 5, switch door; 6, heat dissipation hole; 7, observation port; 8, observation window; 9, conduit; 10, telescopic pipe; 11, mounting block; 12, micro hydraulic cylinder; 13, telescopic rod; 14, spring; 15, fixed block; 16, knob; 17, display screen; 18, movable sleeve; 19, first shielding curtain; 20, second shielding curtain; 21, shielding frame; 22, baffle; 23, clamping block; 24, slide rail; 25, supporting plate; 26, limiting strip; 27, clamping groove; 28, retaining box; 29, placement cavity; 30, back plate; 31, panel; 32, recess; 33, rolling ball; 34, contact button; 35, alarm; 36, balance base; 37, monitoring camera. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0030] Please refer to Figures 1-7 The present application provides a technical scheme of zero-crossing breaking high-voltage vacuum circuit breaker:

[0031] Example one

[0032] As Figures 1-6As shown, a zero-crossing breaking high-voltage vacuum circuit breaker, including central control box 1, support frame 2, insulating cylinder 3, operation box 4, switch door 5, heat dissipation hole 6, observation port 7, observation window 8, guide pipe 9, telescopic pipe 10, mounting block 11, miniature hydraulic cylinder 12, telescopic rod 13, spring 14, fixed block 15, knob 16, display screen 17, movable sleeve 18, first curtain 19, second curtain 20, curtain frame 21, baffle 22, clamping block 23, sliding rail 24, supporting plate 25, limiting strip 26, clamping groove 27, retaining box 28, placement cavity 29, back plate 30, panel 31, groove 32, rolling ball 33, contact button 34, alarm 35, balance base 36 and monitoring camera 37, a plurality of insulating cylinders 3 are fixedly installed at the top end of the central control box 1, support frames 2 are fixedly installed at the bottom of the central control box 1 on both sides, an operation box 4 is fixedly installed at the middle of the bottom of the central control box 1, a switch door 5 is hingedly connected on one side of the operation box 4, an observation port 7 is formed in the top of the switch door 5, an observation window 8 is fixedly installed on the top of the inner wall of the observation port 7, a guide pipe 9 is slidably connected to the bottom end of the observation window 8, a telescopic pipe 10 is fixedly connected to one end of the guide pipe 9, a mounting block 11 is fixedly connected to the bottom end of the telescopic pipe 10, a monitoring camera 37 is fixedly installed on the back of the mounting block 11, a display screen 17 is fixedly installed on one side of the front of the observation window 8, a miniature hydraulic cylinder 12 is fixedly installed at one end of the guide pipe 9, a telescopic rod 13 is fixedly connected to the output end of the miniature hydraulic cylinder 12, a spring 14 is fixedly connected to one end of the telescopic rod 13, the spring 14 penetrates through the inside of the telescopic pipe 10 and is fixedly connected to the top end of the mounting block 11, a knob 16 penetrates through one end of the outer wall of the guide pipe 9, the miniature hydraulic cylinder 12 is located inside the knob 16, through the cooperation of the observation port 7, the observation window 8, the guide pipe 9, the telescopic pipe 10 and the monitoring camera 37, the inside of the operation box 4 can be checked through the observation window 8 without opening the switch door 5, through the cooperation of the guide pipe 9, the telescopic pipe 10, the mounting block 11, the monitoring camera 37, the miniature hydraulic cylinder 12 and the knob 16, the telescopic rod 13 is driven to move by the operation of the miniature hydraulic cylinder 12, further driving the spring 14 to move and exerting downward pressure on the mounting block 11, so that the telescopic pipe 10 is elongated after being stressed, and the monitoring camera 37 provided on the mounting block 11 is driven to move downward, the inside observation position can be adjusted by the movement of the monitoring camera 37, the guide pipe 9 and the telescopic pipe 10 are driven to rotate by rotating the knob 16, further driving the mounting block 11 and the monitoring camera 37 to rotate and change position, the display screen 17 displays the picture taken by the monitoring camera 37, and the inside dead angle position of the operation box 4 can be checked more accurately, so that it is not necessary to carry a large number of keys to open the door during maintenance, and the situation of forgetting to lock the door is avoided, the outer wall of the guide pipe 9 is sleeved with a movable sleeve 18, one end of the movable sleeve 18 is fixedly connected with the first curtain 19, the other end of the movable sleeve 18 is fixedly connected with the second curtain 20,One end of the first and second shielding curtains 19 and 20 is fixedly connected with the inner wall of the observation port 7, the middle of the front of the opening door 5 is fixedly installed with a shielding frame 21, the top of the outer wall of the shielding frame 21 is rotatably connected with a baffle 22, the bottom end of the baffle 22 is fixedly connected with a plurality of clamping blocks 23, the bottom of the shielding frame 21 is provided with a limiting strip 26, a plurality of clamping grooves 27 are formed in the top end of the limiting strip 26, the inner walls of the plurality of clamping grooves 27 are clamped and fixed with the inner walls of the adjacent clamping blocks 23, the two sides of the bottom of the shielding frame 21 are provided with sliding rails 24, the inner walls of the two sliding rails 24 are slidably connected with sliding blocks, the adjacent ends of the two sliding blocks are fixedly connected with the two ends of the limiting strip 26, the bottom ends of the two sliding rails 24 are fixedly connected with supporting plates 25, the two sides of the bottom end of the limiting strip 26 are in contact with the top of the supporting plate 25, and the back surfaces of the two sliding rails 24 are fixedly connected with the front surface of the opening door 5.

[0033] Example two

[0034] On the basis of example one, as shown in Figure 1 and Figure 7 the top of the side of the two support frames 2 which is not adjacent is fixedly installed with a retaining box 28, the inside of the two retaining boxes 28 is provided with a placing cavity 29, the side of the two retaining boxes 28 which is adjacent is fixedly connected with a back plate 30, the side of the two retaining boxes 28 which is not adjacent is fixedly connected with a face plate 31, the middle of the bottom end of the two placing cavities 29 is provided with a recess 32, the top end of the two recesses 32 is placed with a rolling ball 33, the two ends of the two placing cavities 29 are fixedly installed with a contact button 34, the two sides of the top end of the two retaining boxes 28 are fixedly installed with an alarm 35, the four alarms 35 are electrically connected with an external power supply through the contact button 34, the retaining box 28, the placing cavity 29, the face plate 31, the contact button 34 and the alarm 35 are matched, the device is installed in parallel, the rolling ball 33 is returned to the recess 32 after installation, when the side of the support frame 2 is aged and rotted, the side collapses, further drives the clamping block 23 to roll in the placing cavity 29 to the side which is caused to be lower, when the angle deviation is serious, the rolling ball 33 rolls to the contact button 34, further triggers the corresponding alarm 35, the collapse of the side angle can be judged through the sound of the corresponding alarm 35, further the treatment can be quickly made, the stretching and rupture of the line caused by serious collapse is avoided, the safety of the device installation is improved to a certain extent, the effective early warning effect is achieved, the recess 32 assists in limiting the rolling ball 33, when the slight deviation occurs, the rolling ball 33 can still be ensured to be in the recess 32.

[0035] Working principle: in use, first, the central control box 1 is placed in a stable part through the support frame 2 and the support of the balance base 36, and is connected with the external circuit through the insulating cylinder 3 for use, the operation box 4 is set as the center of the device, when it is needed to check the inside of the operation box 4, the switch door 5 does not need to be opened, the inside is observed through the opening 7 by opening the baffle 22, if the internal dead angle part and the relatively fine part cannot be accurately checked, the telescopic rod 13 can be stretched by controlling the micro hydraulic cylinder 12 to drive the spring 14 to extrude, the length of the telescopic rod 13 is less than the length before the top turning position of the guide pipe 9, so the inner wall of the guide pipe 9 will not be extruded, the spring 14 extrudes the mounting block 11, the mounting block 11 drives the telescopic pipe 10 to stretch after being stressed, the monitoring camera 37 can be adjusted in height, the guide pipe 9 and the telescopic pipe 10 can be rotated by manually rotating the knob 16, the mounting block 11 and the monitoring camera 37 are further driven to rotate, the camera position is further adjusted, so that the operator can accurately check the internal condition through the display screen 17 when adjusting, and the movable sleeve 18 is moved synchronously when the guide pipe 9 is moved, one end is stretched and the other end is contracted under the fixation of the first shielding curtain 19 and the second shielding curtain 20, so the observation window 8 bottom end can be moved to block the gap of the guide pipe 9, dust is prevented from entering the inside of the operation box 4, after the check is completed, the baffle 22 is rotated to be attached to the surface of the micro hydraulic cylinder 12, the limiting strip 26 is lifted under the sliding of the sliding rail 24, so that the clamping groove 27 is clamped and connected with the clamping block 23, and the effect of limiting and closing the baffle 22 is achieved, when the device is used for a long time, the support frame 2 is aged and deviated, the retaining box 28 is deviated, the rolling ball 33 in the placing cavity 29 is deviated to the lower side under the action of gravity, and the corresponding contact button 34 is contacted, and the alarm 35 is triggered, the alarm 35 is operated to produce an alarm sound, the collapse is reminded, so that the support frame 2 can be quickly repaired, and the line stretching and breaking are avoided.

[0036] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A zero-crossing breaking high-voltage vacuum circuit breaker, comprising a central control box (1), a support frame (2), an insulating cylinder (3), an operating box (4), a switch door (5), a heat dissipation hole (6), an observation port (7), an observation window (8), a conduit (9), an extension tube (10), a mounting block (11), a miniature hydraulic cylinder (12), an extension rod (13), a spring (14), a knob (16), a display screen (17), a movable sleeve (18), a first shielding curtain (19), a second shielding curtain (20), a shielding frame (21), a baffle (22), a clamping block (23), a sliding rail (24), a supporting plate (25), a limiting strip (26), a clamping groove (27), a retaining box (28), a placement cavity (29), a back plate (30), a panel (31), a groove (32), a rolling ball (33), a contact button (34), an alarm (35), and a monitoring camera (37), characterized in that, The top end of the central control box (1) is fixedly installed with multiple insulating barrels (3), both sides of the bottom end of the central control box (1) are fixedly installed with support frames (2), the middle of the bottom end of the central control box (1) is fixedly installed with an operation box (4), one side of the operation box (4) is hingedly connected with a switch door (5), the top of the switch door (5) is provided with an observation port (7), the top of the inner wall of the observation port (7) is fixedly installed with an observation window (8), the bottom end of the observation window (8) is slidably connected with a conduit (9), one end of the conduit (9) is fixedly connected with an extension tube (10), the bottom end of the extension tube (10) is fixedly connected with a mounting block (11); One end of the conduit (9) is fixedly installed with a miniature hydraulic cylinder (12), the output end of the miniature hydraulic cylinder (12) is fixedly connected with an extension rod (13), one end of the extension rod (13) is fixedly connected with a spring (14), one end of the spring (14) penetrates through the inside of the extension tube (10) and is fixedly connected with the top end of the mounting block (11); The outer wall of the conduit (9) is sleeved with a movable sleeve (18), the top end and the bottom end of the movable sleeve (18) are slidably connected with the bottom end of the observation window (8) and the bottom end of the inner wall of the observation port (7) respectively, one end of the movable sleeve (18) is fixedly connected with a first shielding curtain (19), the other end of the movable sleeve (18) is fixedly connected with a second shielding curtain (20), one end of the first shielding curtain (19) and the second shielding curtain (20) is fixedly connected with the inner wall of the observation port (7); The top of the side, which is not adjacent to the support frame (2), is fixedly installed with a retaining box (28), the inside of the retaining box (28) is provided with a placing cavity (29), the side, which is adjacent to the retaining box (28), is fixedly connected with a back plate (30), the side, which is not adjacent to the retaining box (28), is fixedly connected with a face plate (31); The middle of the bottom end of the placing cavity (29) is provided with a groove (32), the top end of the groove (32) is placed with a rolling ball (33), the two ends of the placing cavity (29) are fixedly installed with a contact button (34), the top end of the retaining box (28) is fixedly installed with an alarm (35), the four alarms (35) are electrically connected with an external power supply through the contact button (34); The back of the mounting block (11) is fixedly installed with a monitoring camera (37), the side of the front of the observation window (8) is fixedly installed with a display screen (17); One end of the outer wall of the conduit (9) is fixedly penetrated with a knob (16), the miniature hydraulic cylinder (12) is located in the inside of the knob (16); The middle of the front of the switch door (5) is fixedly installed with a shielding frame (21), the top of the outer wall of the shielding frame (21) is rotatably connected with a baffle (22), the bottom end of the baffle (22) is fixedly connected with multiple clamping blocks (23); The bottom of the shielding frame (21) is provided with a limiting strip (26), a plurality of clamping grooves (27) are formed in the top end of the limiting strip (26), the inner walls of the plurality of clamping grooves (27) are clamped and fixed with the inner walls of the adjacent clamping blocks (23), the two sides of the bottom of the shielding frame (21) are provided with sliding rails (24), the inner walls of the two sliding rails (24) are slidingly connected with sliding blocks, the adjacent ends of the two sliding blocks are fixedly connected with the two ends of the limiting strip (26) respectively, the bottom ends of the two sliding rails (24) are fixedly connected with supporting plates (25), the two sides of the bottom end of the limiting strip (26) are in contact with the top of the supporting plate (25) respectively, and the back surfaces of the two sliding rails (24) are fixedly connected with the front surface of the switch door (5).

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