Device for preventing high-voltage switch cabinet from being opened by mistake

Abstract

The invention discloses a mistaken opening prevention device for a high-voltage switch cabinet, and relates to the technical field of high-voltage switch cabinets, the mistaken opening prevention device comprises a main air switch and a plurality of branch air switches, the main air switch is fixedly connected with one of the branch air switches, two adjacent branch air switches are fixedly connected, and the main air switch is fixedly connected with the branch air switches. According to the mistaken opening prevention device for the high-voltage switch cabinet, the limiting mechanism is arranged, so that when the main air switch and the branch air switches are turned on, the main air switch needs to be turned on firstly, then the branch air switches can be turned on, when the main air switch and the branch air switches are turned off, all the branch air switches need to be turned off, and then the main air switch and the branch air switches are turned off. When the main air switch is switched on, the main air switch can be switched off only when the load is switched off, so that instantaneous current impact generated when the main air switch is switched on can be reduced, and meanwhile, arc generated by the branch air switches due to sudden disconnection of the load when the main air switch cuts off current is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage switch cabinets, and specifically to an anti-misoperation opening device for high-voltage switch cabinets. Background Technique

[0002] The switch cabinet is the end device of the power distribution system. In the existing technology, as more and more electrical components and wires and cables need to be accommodated inside the switch cabinet, the circuits in the switch cabinet become more and more complex, and it is often necessary for personnel to perform maintenance. During maintenance, it is very easy to accidentally touch the switch.

[0003] In a high-voltage switch cabinet, a main air switch and multiple sub-air switches are installed. When personnel perform maintenance, not only will there be a situation of accidentally opening the air switch, but there will also be a situation of incorrect opening. In the existing technology, there is often an operation of first opening the sub-air switch and then opening the main air switch. This operation will have an instantaneous current impact phenomenon, which may lead to the risk of damage to the air switch. If the instantaneous current causes insulation breakdown inside the equipment, the metal shell may be electrified. If the grounding protection fails, electric shock accidents may occur when a person touches it.

[0004] Combining the above problems, we will find that the existing air switches on the market are very difficult to avoid the above-mentioned problems at the same time when in use, and even if they can be solved, they need to be solved with the cooperation of external tools, so that the desired effect cannot be achieved. Therefore, we propose an anti-misoperation opening device for high-voltage switch cabinets. Summary of the Invention

[0005] The purpose of the present invention is to provide an anti-misoperation opening device for high-voltage switch cabinets to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An anti-misoperation opening device for high-voltage switch cabinets, including a main air switch and sub-air switches. The number of the sub-air switches is several. The main air switch is fixedly connected to one of the sub-air switches, and adjacent two of the sub-air switches are fixedly connected. A rotating dial is rotatably connected to the inner cavities of the main air switch and the sub-air switches. A limiting mechanism for cooperating with the rotating dial is jointly arranged in the inner cavities of the main air switch and the sub-air switches. A clamping mechanism for cooperating with the limiting mechanism is arranged in the inner cavity of the rotating dial.

[0007] Preferably, the limiting mechanism includes a first sliding cavity and a second sliding cavity opened in the inner cavities of the main air switch and the branch air switch. A first sliding rod is slidably connected in the inner cavity of the first sliding cavity. A first clamping rod and a first extrusion block are fixedly connected to the surface of the first sliding rod. The number of the first clamping rods is several. A second sliding rod is slidably connected in the inner cavity of the second sliding cavity. A second clamping rod and a second extrusion block are fixedly connected to the surface of the second sliding rod. The number of the second extrusion blocks is several. Fixing rings are fixedly connected to the surfaces of the first sliding rod and the second sliding rod. First springs are movably sleeved on the surfaces of the first sliding rod and the second sliding rod. One end of each first spring is fixedly connected to one side of the fixing ring, and the other end of each first spring is fixedly connected to the inner wall of the branch air switch. Two arc-shaped plates are movably connected to the surface of the rotary dial, and through holes are opened on one side of each arc-shaped plate.

[0008] Preferably, T-shaped grooves are opened on the inner walls of the first sliding cavity and the second sliding cavity. T-shaped rods are slidably connected in the inner cavities of the T-shaped grooves. The surfaces of the first sliding rod and the second sliding rod are respectively fixedly connected to the surfaces of the two T-shaped rods.

[0009] Preferably, the engaging mechanism includes a cavity opened in the inner cavity of the rotary dial. Two moving blocks are slidably connected in the inner cavity of the cavity. Limiting blocks are fixedly connected to the opposite sides of the two moving blocks. Limiting grooves for cooperating with the limiting blocks are opened on the surface of the arc-shaped plate. An adjusting block is slidably connected in the inner cavity of the rotary dial.

[0010] Preferably, a pressing block is slidably connected in the inner cavity of the rotary dial. A third spring is movably sleeved on the surface of the pressing block. One end of the third spring is fixedly connected to the surface of the pressing block, and the other end of the third spring is fixedly connected to the inner wall of the rotary dial. One ends of the pressing block and the adjusting block are both trapezoidally arranged.

[0011] Preferably, the inner cavities of the main air switch and the sub-air switch are both provided with two wiring terminals connected to external cables, and the inner cavities of the main air switch and the sub-air switch are both provided with an adjusting cavity, one of the wiring terminals is fixedly connected to a magnetic tripping coil, a magnetic core is provided at the center position of the magnetic tripping coil, one end of the magnetic tripping coil is fixedly connected to a static contact, and the other wiring terminal is fixedly connected to a moving contact, the inner cavity of the adjusting cavity is rotatably connected to a toggle block, and the surface of the toggle block is provided with a fourth spring and a fifth spring, one end of the fourth spring and the fifth spring are both fixedly connected to the surface of the toggle block, and the other end of the fourth spring and the other end of the fifth spring 317 are both fixedly connected to the inner wall of the adjusting cavity, the surface of the magnetic core is fixedly connected to a connecting rod, one side of the adjusting block is fixedly connected to an inclined rod used in conjunction with the connecting rod, and a seventh spring is provided on the surface movable sleeve of the inclined rod, one end of the seventh spring is fixedly connected to the inner wall of the rotating toggle block, and the other end of the seventh spring is fixedly connected to one side of the inclined rod.

[0012] Preferably, one end of the moving block is fixedly connected to a guide rod, the surface of the guide rod is slidably connected to the inner wall of the cavity, a sixth spring is movably sleeved on the surface of the guide rod, one end of the sixth spring is fixedly connected to the inner wall of the cavity, and the other end of the sixth spring is fixedly connected to the moving block.

[0013] Preferably, the inner cavity of the rotating block in the main air switch is slidably connected to two adjusting rods, the surfaces of the two adjusting rods are provided with grooves, the inner cavity of the rotating block is slidably connected to a card block, one side of the card block is fixedly connected to an elastic sheet, one end of the elastic sheet is fixedly connected to the inner wall of the rotating block, and the main air switch is provided with a card hole used in conjunction with the card block.

[0014] Preferably, the surfaces of the main air switch and the sub-air switch are both slidably connected to a ceramic rod, the inner cavity of the ceramic rod is slidably connected to a marking rod, one end of the marking rod is fixedly connected to a tension spring, one end of the tension spring is fixedly connected to the inner wall of the ceramic rod, the surfaces of the main air switch and the sub-air switch are both fixedly connected to a support plate, the inner cavity of the support plate is slidably connected to the surface of the ceramic rod, the surface of the ceramic rod is fixedly connected to a limiting ring, the surface of the ceramic rod is movablely sleeved with a second spring, one end of the second spring is fixedly connected to the limiting ring, and the other end of the second spring is fixedly connected to the support plate.

[0015] Preferably, a rubber sheet is fixedly connected to the surface of the arc-shaped plate, and the first sliding cavity and the second sliding cavity are both used in conjunction with the surface of the rubber sheet.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. By providing a limiting mechanism in the present invention, when the main air switch and the branch air switches are to be opened, the main air switch needs to be opened first, and then the branch air switches can be opened. When closing the main air switch and the branch air switches, all the branch air switches need to be closed before the main air switch can be closed. This can reduce the generation of instantaneous current impact when the main air switch is opened, and at the same time avoid the generation of electric arcs in the branch air switches due to sudden disconnection of the load when the main air switch cuts off the current.

[0017] 2. By providing an engaging mechanism in the present invention, when the main air switch and the branch air switches are open-circuited, the current in the magnetic tripping coil will increase, causing the magnetic core to move. The magnetic core drives the connecting rod to first squeeze the inclined rod, causing the adjusting block to squeeze the moving block, so that the limiting block disengages from the inner cavity of the limiting groove, canceling the limitation on the arc-shaped plate and avoiding the influence of the limiting mechanism on the tripping of the main air switch and the branch air switches. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the structure of the main air switch of the present invention; Figure 3 is a schematic diagram of the structure of the rotary dial and the inclined rod of the present invention; Figure 4 is a sectional schematic diagram of the branch air switch of the present invention; Figure 5 is of the present invention Figure 4 partial enlarged view at A in; Figure 6 is a schematic diagram of the structure of the static contact and the moving contact of the present invention; Figure 7 is an exploded schematic diagram of the ceramic rod and the marking rod of the present invention; Figure 8 is a schematic diagram of the structure of the rotary dial and the first sliding rod of the present invention; Figure 9 is a schematic diagram of the structure of the first sliding rod and the first clamping rod of the present invention; Figure 10 is a sectional schematic diagram of the main air switch, the branch air switch and the second sliding rod of the present invention; Figure 11 is a sectional schematic diagram of the main air switch, the branch air switch and the first sliding rod of the present invention; Figure 12 is a sectional schematic diagram of the rotary dial of the present invention; Figure 13 is of the present invention Figure 12 partial enlarged view at B in; Figure 14For the present invention Figure 12 A partial enlarged view of point C in the middle; Figure 15 For the present invention Figure 12 A partial enlarged view of point D in the middle; Figure 16 It is a cross-sectional schematic diagram of the rotary dial block and the inclined rod of the present invention; Figure 17 It is a structural schematic diagram of the oblique rod, the seventh spring and the adjustment block of the present invention; Figure 18 It is a schematic diagram of the structure of the arc plate and the rubber sheet of the present invention; Figure 19 For the present invention Figure 8 A partial enlarged view of point E in the middle.

[0019] In the figure: 1, main air switch; 11, air switch; 12, rotary dial block; 2, limit mechanism; 201, first sliding cavity; 202, second sliding cavity; 203, first sliding rod; 204, first clamping rod; 205, first extrusion block; 206, second sliding rod; 207, second clamping rod; 208, second extrusion block; 209, fixing ring; 210, first spring; 211, arc plate; 212, through hole; 213, T-slot; 214, T-rod; 3, locking mechanism; 301, cavity; 302, moving block; 303, limit block; 304, limit slot; 305, adjustment block; 306, seventh spring; 307, pressing block; 308, third spring; 309, terminal; 310, adjusting chamber; 311, magnetic tripping coil; 312, magnetic core; 313, static contact; 314, moving contact; 315, toggle block; 316, fourth spring; 317, fifth spring; 318, connecting rod; 319, inclined rod; 320, guide rod; 321, sixth spring; 322, adjusting rod; 323, groove; 324, block; 325, elastic sheet; 326, card hole; 327, rubber sheet; 401, ceramic rod; 402, marking rod; 403, tension spring; 404, support plate; 405, limit ring; 406, second spring. DETAILED DESCRIPTION

[0020] 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.

[0021] Example 1: Please refer to Figures 1 - 18, the present invention provides a technical solution: a misoperation prevention device for a high-voltage switch cabinet, which includes a main air switch 1 and branch air switches 11. The number of branch air switches 11 is several. The main air switch 1 is fixedly connected to one of the branch air switches 11, and adjacent two branch air switches 11 are fixedly connected. A rotating dial 12 is rotatably connected to the inner cavities of both the main air switch 1 and the branch air switches 11. A limiting mechanism 2 that cooperates with the rotating dial 12 is jointly arranged in the inner cavities of the main air switch 1 and the branch air switches 11. A clamping mechanism 3 that cooperates with the limiting mechanism 2 is arranged in the inner cavity of the rotating dial 12.

[0022] The limiting mechanism 2 includes a first sliding cavity 201 and a second sliding cavity 202 opened in the inner cavities of the main air switch 1 and the branch air switches 11. It should be noted that the second sliding cavity 202 in the main air switch 1 is communicated with the second sliding cavities 202 in several branch air switches 11, and the first sliding cavity 201 in the main air switch 1 is communicated with the first sliding cavities 201 in several branch air switches 11. A first sliding rod 203 is slidably connected to the inner cavity of the first sliding cavity 201. A first clamping rod 204 and a first extrusion block 205 are fixedly connected to the surface of the first sliding rod 203. The number of the first clamping rods 204 is several. A second sliding rod 206 is slidably connected to the inner cavity of the second sliding cavity 202. A second clamping rod 207 and a second extrusion block 208 are fixedly connected to the surface of the second sliding rod 206. The number of the second extrusion blocks 208 is several. Fixed rings 209 are fixedly connected to the surfaces of both the first sliding rod 203 and the second sliding rod 206. First springs 210 are movably sleeved on the surfaces of both the first sliding rod 203 and the second sliding rod 206. One end of the first spring 210 is fixedly connected to one side of the fixed ring 209, and the other end of the first spring 210 is fixedly connected to the inner wall of the branch air switch 1. Two arc-shaped plates 211 are movably connected to the surface of the rotating dial 12. A through hole 212 is opened on one side of the arc-shaped plate 211. By setting the limiting mechanism 2, when both the main air switch 1 and the branch air switches 11 are in the closed state, the arc-shaped plate 211 in the main air switch 1 will be stuck in the first sliding cavity 201 and squeeze the first extrusion block 205, and at this time the first clamping rod 204 is stuck in the through hole 212, and at this time the rotating dial 12 of the branch air switch 11 cannot be opened. It is necessary to open the rotating dial 12 of the main air switch 1 first, so that the arc-shaped plate 211 in the main air switch 1 is stuck in the second sliding cavity 202, and then the arc-shaped plate 211 in the branch air switch 11 is stuck in the second sliding cavity 202 and squeezes the second extrusion block 208, so that the second sliding rod 206 moves. At this time, the second clamping rod 207 will be stuck in the through hole 212 of the arc-shaped plate 211 in the main air switch 1, realizing the limitation of the arc-shaped plate 211 in the main air switch 1, so that when closing the main air switch 1 and the branch air switches 11, the branch air switches 11 are closed first.

[0023] The inner walls of the first sliding cavity 201 and the second sliding cavity 202 are both provided with T-shaped grooves 213. The inner cavity of the T-shaped groove 213 is slidably connected with a T-shaped rod 214. The surfaces of the first sliding rod 203 and the second sliding rod 206 are respectively fixedly connected with the surfaces of the two T-shaped rods 214. By setting the T-shaped groove 213 and the T-shaped rod 214 to cooperate, when moving the first sliding rod 203 and the second sliding rod 206, the T-shaped rod 214 will move in the inner cavity of the T-shaped groove 213, avoiding the deviation of the first sliding rod 203 and the second sliding rod 206 during movement, thereby achieving the effect of guiding the first sliding rod 203 and the second sliding rod 206.

[0024] Two adjusting rods 322 are slidably connected to the inner cavity of the rotary dial 12 in the main air switch 1. Grooves 323 are provided on the surfaces of the two adjusting rods 322. A clamping block 324 is slidably connected to the inner cavity of the rotary dial 12. One side of the clamping block 324 is fixedly connected with an elastic piece 325. One end of the elastic piece 325 is fixedly connected with the inner wall of the rotary dial 12. A clamping hole 326 that cooperates with the clamping block 324 is provided on the inner wall of the main air switch 1. By setting the adjusting rods 322, the clamping block 324, the elastic piece 325 and the clamping hole 326 to cooperate, when the rotary dial 12 in the main air switch 1 is in the closed state, the clamping block 324 is stuck in the clamping hole 326. Since the number of adjusting rods 322 is two, it is necessary to move the two adjusting rods 322 simultaneously. When the adjusting rods 322 move to align the grooves 323 with the clamping block 324, the elastic piece 325 drives the clamping block 324 to move in the reverse direction, so that the two clamping blocks 324 are simultaneously disengaged from the clamping hole 326, thereby enabling the rotary dial 12 in the main air switch 1 to rotate, avoiding the rotary dial 12 in the main air switch 1 being collided and opened.

[0025] The specific implementation manner of this embodiment is as follows: When the main air switch 1 and the branch air switch 11 are both in the closed state, the arc plate 211 in the main air switch 1 will be stuck in the first sliding cavity 201 and squeeze the first extrusion block 205. At this time, the first latch 204 is stuck in the through hole 212. At this time, the rotary knob 12 of the branch air switch 11 cannot be opened. It is necessary to first open the rotary knob 12 of the main air switch 1 so that the arc plate 211 in the main air switch 1 is stuck in the second sliding cavity 202. Then, the arc plate 211 in the branch air switch 11 is stuck in the second sliding cavity 202 and squeezes the second extrusion block 208, causing the second sliding rod 206 to move. At this time, the second latch 207 will be stuck in the through hole 212 of the arc plate 211 in the main air switch 1, realizing the limit of the arc plate 211 in the main air switch 1, so that when closing the main air switch 1 and the branch air switch 11, the branch air switch 11 is closed first. When the rotary knob 12 in the main air switch 1 is in the closed state, the latch 324 is stuck in the locking hole 326. Since the number of adjusting rods 322 is two, it is necessary to move the two adjusting rods 322 simultaneously. When the adjusting rods 322 are moved to align the groove 323 with the latch 324, the elastic piece 325 drives the latch 324 to move in the reverse direction, so that the two latches 324 are simultaneously disengaged from the locking hole 326, so that the rotary knob 12 in the main air switch 1 can be rotated, avoiding the rotary knob 12 in the main air switch 1 from being collided and opened.

[0026] Embodiment 2: Please refer to Figures 1 - 18 , the present invention provides a technical solution: a misoperation prevention device for a high-voltage switch cabinet, and the present invention makes corresponding improvements to the technical problems mentioned in the background art.

[0027] The latching mechanism 3 includes a cavity 301 opened in the inner cavity of the rotary knob 12. Two moving blocks 302 are slidably connected in the inner cavity of the cavity 301. A limiting block 303 is fixedly connected to the opposite side of the two moving blocks 302. A limiting groove 304 adapted to the limiting block 303 is opened on the surface of the arc plate 211. It should be noted that one end of the arc plate 211 is located in the cavity 301. An adjusting block 305 is slidably connected in the inner cavity of the rotary knob 12. By providing the latching mechanism 3, when the main air switch 1 and the branch air switch 11 are both in the open state, when the main air switch 1 and the branch air switch 11 trip, the adjusting block 305 is moved, so that the adjusting block 305 squeezes the moving blocks 302, causing the two moving blocks 302 to move in opposite directions. At this time, the moving block 302 drives the limiting block 303 to disengage from the limiting groove 304, so that the arc plate 211 can be separated from the rotary knob 12, avoiding the influence of the limiting mechanism 2 on the trip.

[0028] A pressing block 307 is slidably connected to the inner cavity of the rotary dial block 12. A third spring 308 is movably sleeved on the surface of the pressing block 307. One end of the third spring 308 is fixedly connected to the surface of the pressing block 307, and the other end of the third spring 308 is fixedly connected to the inner wall of the rotary dial block 12. One end of the pressing block 307 and one end of the adjusting block 305 are both trapezoidally arranged. By setting the cooperation of the pressing block 307 and the third spring 308, when the main air switch 1 and the branch air switch 11 are in the closed state, but when the branch air switch 11 needs to be opened and repaired, a tool can be used to squeeze the pressing block 307, so that the two moving blocks 302 move in opposite directions, so that the arc-shaped plate 211 can be separated from the rotary dial block 12, so as to achieve the effect that the main air switch 1 is closed and the branch air switch 11 is opened, avoiding affecting the repair of the branch air switch 11.

[0029] Both the inner cavities of the main air switch 1 and the branch air switch 11 are provided with two terminal blocks 309 connected to external cables. The inner cavities of the main air switch 1 and the branch air switch 11 are both provided with an adjustment cavity 310. One of the terminal blocks 309 is fixedly connected with a magnetic trip coil 311. A magnetic core 312 is arranged at the central position of the magnetic trip coil 311. It should be noted that a compression spring is sleeved on the surface of the magnetic core 312 for resetting the magnetic core 312. One end of the compression spring is fixed to the inner cavity of the adjustment cavity 310, and the other end of the compression spring is fixed to the magnetic core 312. The magnetic core 312 is slidably connected to the inner cavity of the adjustment cavity 310. One end of the magnetic trip coil 311 is fixedly connected with a static contact 313, and the other terminal block 309 is fixedly connected with a moving contact 314. A toggle block 315 is rotatably connected to the inner cavity of the adjustment cavity 310. It should be noted that the toggle block 315 is connected to the rotary dial 12 through a pull rod. The pull rod is rotatably connected to the rotary dial 12 and the toggle block 315, so that when the toggle block 315 rotates, it drives the rotary dial 12 to rotate through the pull rod. The surface of the toggle block 315 is provided with a fourth spring 316 and a fifth spring 317. One end of each of the fourth spring 316 and the fifth spring 317 is fixedly connected to the surface of the toggle block 315, and the other end of the fourth spring 316 and the other end of the fifth spring 317 are both fixedly connected to the inner wall of the adjustment cavity 310. A connecting rod 318 is fixedly connected to the surface of the magnetic core 312. One side of the adjusting block 305 is fixedly connected with an inclined rod 319 that cooperates with the connecting rod 318. A seventh spring 306 is movably sleeved on the surface of the inclined rod 319. One end of the seventh spring 306 is fixedly connected to the inner wall of the rotary dial 12, and the other end of the seventh spring 306 is fixedly connected to one side of the inclined rod 319. By setting the magnetic trip coil 311, the magnetic core 312, the static contact 313, the moving contact 314, the connecting rod 318 and the inclined rod 319 to cooperate with each other, when the main air switch 1 and the branch air switch 11 are in the on state and the main air switch 1 has a circuit break, the current in the magnetic trip coil 311 will increase, causing the magnetic core 312 to move under the action of the magnetic field, so that the magnetic core 312 drives the connecting rod 318 to move. The movement of the connecting rod 318 will squeeze the inclined rod 319. At this time, the inclined rod 319 moves downward, so that the inclined rod 319 drives the adjusting block 305 to move, thus achieving the effect of unlocking the arc-shaped plate 211. When a circuit break occurs, the main air switch 1 can complete the tripping action. It should be noted that the inner cavities of the main air switch 1 and the branch air switch 11 are also provided with an arc extinguishing mechanism, including an arc extinguishing chamber and an arc guiding plate, with a metal grid structure inside, which uses air medium to quickly cool and divide the arc to prevent high temperature from damaging the equipment. This is an existing technology and will not be elaborated too much. It should also be noted that the connecting rod 318 is composed of an L-shaped rod, a telescopic rod, a reset spring and a pressing rod. Among them, one end of the L-shaped rod is fixedly connected to one end of the telescopic rod, and the other end of the L-shaped rod is fixedly connected to the surface of the magnetic core 312.The telescopic end of the telescopic rod is fixedly connected to the extrusion rod, and the reset spring is movably sleeved on the surface of the telescopic rod. The two ends of the reset spring are respectively fixedly connected to the extrusion rod and the L rod, and the elastic coefficient of the reset spring is greater than the elastic coefficient of the seventh spring 306. When the magnetic core 312 moves downward, it will drive the connecting rod 318 to move downward, so that the extrusion rod squeezes the inclined rod 319. At this time, the seventh spring 306 is compressed first, so that the arc plate 211 can be separated. When the magnetic core 312 continues to move downward, the reset spring is compressed, and the toggle block 315 squeezes the moving contact 314, thereby realizing the tripping action.

[0030] One end of the moving block 302 is fixedly connected to a guide rod 320, the surface of the guide rod 320 is slidably connected to the inner wall of the cavity 301, and a sixth spring 321 is movably sleeved on the surface of the guide rod 320, one end of the sixth spring 321 is fixedly connected to the inner wall of the cavity 301, and the other end of the sixth spring 321 is fixedly connected to the moving block 302. By setting the coordinated use of the guide rod 320 and the sixth spring 321, when the adjustment block 305 squeezes the two moving blocks 302, the movement of the moving block 302 will squeeze the sixth spring 321, causing the sixth spring 321 to be deformed by force, and when the adjustment block 305 cancels the squeezing of the moving block 302, the moving block 302 will move in the opposite direction under the action of the sixth spring 321, causing the moving block 302 to reset.

[0031] A rubber sheet 327 is fixedly connected to the surface of the arc plate 211, and the first sliding cavity 201 and the second sliding cavity 202 are used in conjunction with the surface of the rubber sheet 327. By setting the rubber sheet 327, when the arc plate 211 moves to the inner cavity of the first sliding cavity 201 and the second sliding cavity 202, the rubber sheet 327 will be in close contact with the inner walls of the first sliding cavity 201 and the second sliding cavity 202. When the arc plate 211 is separated from the rotating dial block 12, the rubber sheet 327 will still be located in the first sliding cavity 201 and the second sliding cavity 202 to prevent the arc plate 211 from falling.

[0032] The specific implementation of this embodiment is as follows: When the main air switch 1 and the branch air switch 11 are in the on state, if the main air switch 1 has a break in the circuit, the current in the magnetic tripping coil 311 will increase, causing the magnetic core 312 to move under the action of the magnetic field. As a result, the magnetic core 312 drives the connecting rod 318 to move. The movement of the connecting rod 318 squeezes the inclined rod 319. At this time, the inclined rod 319 moves downward, driving the adjusting block 305 to move. The adjusting block 305 squeezes the moving block 302, causing the two moving blocks 302 to move in opposite directions. At this time, the moving block 302 drives the limiting block 303 to disengage from the limiting groove 304, so that the arc-shaped plate 211 can be separated from the rotating dial 12, preventing the limiting mechanism 2 from affecting the tripping, and thus achieving the effect of unlocking the arc-shaped plate 211. When a circuit break occurs, the main air switch 1 can complete the tripping action. When the main air switch 1 and the branch air switch 11 are in the off state, but when the branch air switch 11 needs to be opened and repaired, a tool can be used to squeeze the pressing block 307, causing the two moving blocks 302 to move in opposite directions, so that the arc-shaped plate 211 can be separated from the rotating dial 12, achieving the effect of opening the branch air switch 11 while the main air switch 1 is off, and avoiding affecting the repair of the branch air switch 11. It should be noted that the elastic coefficients of the third spring 308 and the seventh spring 306 are both smaller than that of the sixth spring 321, and the elastic coefficient of the return spring is greater than that of the sixth spring 321.

[0033] Embodiment 3: Please refer to Figures 1 - 18 , the present invention provides a technical solution: a device for preventing mis-opening of a high-voltage switchgear, and the present invention makes corresponding improvements to the technical problems mentioned in the background art.

[0034] The surfaces of the main air switch 1 and the branch air switch 11 are both slidably connected with ceramic rods 401. It should be noted that one end of the ceramic rod 401 penetrates into the adjustment cavity 310. A marking rod 402 is slidably connected inside the ceramic rod 401. One end of the marking rod 402 is fixedly connected with a tension spring 403. One end of the tension spring 403 is fixedly connected with the inner wall of the ceramic rod 401. The surfaces of the main air switch 1 and the branch air switch 11 are both fixedly connected with support plates 404. The inner cavity of the support plate 404 is slidably connected with the surface of the ceramic rod 401. A limit ring 405 is fixedly connected to the surface of the ceramic rod 401. A second spring 406 is movably sleeved on the surface of the ceramic rod 401. One end of the second spring 406 is fixedly connected with the limit ring 405. The other end of the second spring 406 is fixedly connected with the support plate 404. By setting the combined use of the ceramic rod 401 and the marking rod 402, when closing the main air switch 1 and the branch air switch 11, the marking rod 402 is moved, so that the marking rod 402 and the tension spring 403 drive the ceramic rod 401 to move, so that the ceramic rod 401 can move between the moving contact 314 and the static contact 313. If there is a large resistance to the ceramic rod 401, the distance between the marking rod 402 and the ceramic rod 401 changes, so that it can be judged that the gap between the moving contact 314 and the static contact 313 is small or in a contacting state, reducing the occurrence of potential safety hazards. It should be noted that the elastic coefficient of the tension spring 403 is greater than that of the second spring 406, and colored marking stickers are provided on the surfaces of the ceramic rod 401 and the marking rod 402. When the ceramic rod 401 reaches the marking position first, it means that there is no obstruction when the ceramic rod 401 moves, indicating that the moving contact 314 and the static contact 313 are separated. When the marking rod 402 reaches the marking position first, it means that there is an obstruction when the ceramic rod 401 moves, indicating that the moving contact 314 and the static contact 313 are not completely disconnected.

[0035] The specific implementation of this embodiment is as follows: If the fourth spring 316 and the fifth spring 317 are aged, fatigued or blocked by foreign objects, resulting in the moving contact 314 being unable to completely separate from the static contact 313. Although the prior art uses an indicator light to make a judgment, if the indicator light fails, it is impossible to determine that the moving contact 314 and the static contact 313 are in a contact state. Therefore, when closing the main air switch 1 and the branch air switch 11, the marking rod 402 can be moved, so that the marking rod 402 and the tension spring 403 drive the ceramic rod 401 to move, making one end of the ceramic rod 401 move between the moving contact 314 and the static contact 313. When the ceramic rod 401 reaches the marking position first, it indicates that there is no obstruction when the ceramic rod 401 moves, indicating that the moving contact 314 and the static contact 313 are separated. When the marking rod 402 reaches the marking position first, it indicates that there is an obstruction when the ceramic rod 401 moves, indicating that the moving contact 314 and the static contact 313 are not completely disconnected. Thus, it can be determined that the gap between the moving contact 314 and the static contact 313 is small or there is a contact state, reducing the occurrence of potential safety hazards.

[0036] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0037] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for preventing mis-opening of a high-voltage switch cabinet, comprising a main air switch (1) and a sub-air switch (11), wherein the number of the sub-air switches (11) is a plurality, and wherein: The main air switch (1) is fixedly connected to one of the sub-air switches (11), and two adjacent sub-air switches (11) are fixedly connected to each other; the inner cavities of the main air switch (1) and the sub-air switches (11) are both rotatably connected to a rotating dial block (12); the inner cavities of the main air switch (1) and the sub-air switches (11) are jointly provided with a limiting mechanism (2) for use in conjunction with the rotating dial block (12); and the inner cavity of the rotating dial block (12) is provided with a locking mechanism (3) for use in conjunction with the limiting mechanism (2).

2. A device for preventing mis-opening of a high-voltage switch cabinet according to claim 1, characterized in that: The limiting mechanism (2) comprises a first sliding cavity (201) and a second sliding cavity (202) which are opened in the inner cavities of the main air switch (1) and the sub-air switch (11); the inner cavity of the first sliding cavity (201) is slidably connected to a first sliding rod (203); the surface of the first sliding rod (203) is fixedly connected to a first clamping rod (204) and a first extrusion block (205); the number of the first clamping rods (204) is multiple; the inner cavity of the second sliding cavity (202) is slidably connected to a second sliding rod (206); the surface of the second sliding rod (206) is fixedly connected to a second clamping rod (207) and a second extrusion block (208); The number of the second extrusion blocks (208) is several, the surfaces of the first sliding rod (203) and the second sliding rod (206) are fixedly connected with a fixing ring (209), the surfaces of the first sliding rod (203) and the second sliding rod (206) are movably sleeved with a first spring (210), one end of the first spring (210) is fixedly connected to one side of the fixing ring (209), the other end of the first spring (210) is fixedly connected to the inner wall of the air switch (11), the surface of the rotating dial block (12) is movably connected with two arc plates (211), and one side of the arc plate (211) is provided with a through hole (212).

3. A device for preventing mis-opening of a high-voltage switch cabinet according to claim 2, characterized in that: The inner walls of the first sliding cavity (201) and the second sliding cavity (202) are both provided with T-shaped grooves (213), the inner cavities of the T-shaped grooves (213) are slidably connected with T-shaped rods (214), and the surfaces of the first sliding rod (203) and the second sliding rod (206) are respectively fixedly connected to the surfaces of the two T-shaped rods (214).

4. A device for preventing mis-opening of a high-voltage switch cabinet according to claim 2, characterized in that: The engaging mechanism (3) comprises a cavity (301) formed in the inner cavity of the rotating shift block (12); the inner cavity of the cavity (301) is slidably connected to two moving blocks (302); opposite sides of the two moving blocks (302) are fixedly connected to limit blocks (303); a limit groove (304) used in conjunction with the limit blocks (303) is formed on the surface of the arc plate (211); and an adjustment block (305) is slidably connected to the inner cavity of the rotating shift block (12).

5. A device for preventing mis-opening of a high-voltage switch cabinet according to claim 4, characterized in that: The inner cavity of the rotating block (12) is slidably connected to a pressing block (307); a third spring (308) is movably sleeved on the surface of the pressing block (307); one end of the third spring (308) is fixedly connected to the surface of the pressing block (307); the other end of the third spring (308) is fixedly connected to the inner wall of the rotating block (12); one end of the pressing block (307) and one end of the adjusting block (305) are both arranged in a trapezoidal shape.

6. A device for preventing mis-opening of a high-voltage switch cabinet according to claim 4, characterized in that: The inner cavities of the main air switch (1) and the sub-air switch (11) are both provided with two wiring terminals (309) connected to external cables. The inner cavities of the main air switch (1) and the sub-air switch (11) are both provided with an adjustment cavity (310), wherein one of the wiring terminals (309) is fixedly connected to a magnetic tripping coil (311), a magnetic core (312) is provided at the center of the magnetic tripping coil (311), one end of the magnetic tripping coil (311) is fixedly connected to a stationary contact (313), and the other wiring terminal (309) is fixedly connected to a moving contact (314), and the inner cavity of the adjustment cavity (310) is rotatably connected to a toggle block (315), and a fourth spring (316) and a first spring (314) are provided on the surface of the toggle block (315). A fifth spring (317), one end of the fourth spring (316) and the fifth spring (317) are both fixedly connected to the surface of the toggle block (315), the other end of the fourth spring (316) and the other end of the fifth spring (317) are both fixedly connected to the inner wall of the adjustment cavity (310), a connecting rod (318) is fixedly connected to the surface of the magnetic core (312), one side of the adjustment block (305) is fixedly connected to an inclined rod (319) used in conjunction with the connecting rod (318), a seventh spring (306) is movably sleeved on the surface of the inclined rod (319), one end of the seventh spring (306) is fixedly connected to the inner wall of the rotating toggle block (12), and the other end of the seventh spring (306) is fixedly connected to one side of the inclined rod (319).

7. A device for preventing mis-opening of a high-voltage switch cabinet according to claim 4, characterized in that: One end of the moving block (302) is fixedly connected to a guide rod (320), the surface of the guide rod (320) is slidably connected to the inner wall of the cavity (301), a sixth spring (321) is movably sleeved on the surface of the guide rod (320), one end of the sixth spring (321) is fixedly connected to the inner wall of the cavity (301), and the other end of the sixth spring (321) is fixedly connected to the moving block (302).

8. The device for preventing mis-opening of a high-voltage switch cabinet according to claim 1, characterized in that: The inner cavity of the rotating dial block (12) in the main air switch (1) is slidably connected to two adjustment rods (322), and the surfaces of the two adjustment rods (322) are provided with grooves (323). The inner cavity of the rotating dial block (12) is slidably connected to a clamping block (324), one side of the clamping block (324) is fixedly connected to an elastic sheet (325), one end of the elastic sheet (325) is fixedly connected to the inner wall of the rotating dial block (12), and the inner wall of the main air switch (1) is provided with a clamping hole (326) used in conjunction with the clamping block (324).

9. The device for preventing mis-opening of a high-voltage switch cabinet according to claim 1, characterized in that: The surfaces of the main air switch (1) and the sub-air switch (11) are both slidably connected to a ceramic rod (401), the inner cavity of the ceramic rod (401) is slidably connected to a marking rod (402), one end of the marking rod (402) is fixedly connected to a tension spring (403), one end of the tension spring (403) is fixedly connected to the inner wall of the ceramic rod (401), the surfaces of the main air switch (1) and the sub-air switch (11) are both fixedly connected to a support plate (404), the inner cavity of the support plate (404) is slidably connected to the surface of the ceramic rod (401), the surface of the ceramic rod (401) is fixedly connected to a limiting ring (405), the surface of the ceramic rod (401) is movably sleeved with a second spring (406), one end of the second spring (406) is fixedly connected to the limiting ring (405), and the other end of the second spring (406) is fixedly connected to the support plate (404).

10. A device for preventing mis-opening of a high-voltage switch cabinet according to claim 2, characterized in that: A rubber sheet (327) is fixedly connected to the surface of the arc-shaped plate (211), and both the first sliding cavity (201) and the second sliding cavity (202) are used in conjunction with the surface of the rubber sheet (327).

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