Double-grounding high-voltage isolation switch

Abstract

The utility model relates to the technical field of circuit control, and discloses a double-grounding high-voltage isolating switch, which comprises a mounting seat, insulators are arranged on two sides of the mounting seat, conductive plates are mounted on the upper sides of the insulators, a power connection plate can be connected onto the conductive plates in a sliding manner, and the power connection plate can be connected with the conductive plates on the two sides for on-off of a circuit. A track is arranged above the current-conducting plates, the power connection plate slides in the track and shields the mounting seat, the insulator, the current-conducting plates, the power connection plate and the track as an isolation cover, the isolation cover is used for isolating and protecting the device and preventing casualties caused by accidental touch, and meanwhile, the current-conducting plates on the two sides are connected through the power connection plate, so that the safety of the device is improved. The moving mode of the power connection plate is remote control, accurate alignment can be conveniently achieved by pushing the power connection plate to move in the track, meanwhile, personnel approaching is reduced, then accidental injury to personnel is reduced, and meanwhile the isolation cover can protect the power connection plate from deviation or damage caused by accidentally-falling parts, tools and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit control, in particular to a double-grounded high-voltage isolating switch. Background Art

[0002] High-voltage disconnectors are crucial switching devices in the electrical systems of power plants and substations, used in conjunction with high-voltage circuit breakers. They are suitable for indoor installations operating at three-phase AC, 50Hz, and rated at 12kV. They connect, disconnect, or switch circuits when voltage is present and load is high.

[0003] According to the description on the patent website (authorization publication number: CN218274333U), the high-voltage disconnector "comprises a base, a first insulator disposed on one end of the base, a first blade holder disposed on the first insulator, a second insulator disposed on the other end of the base, a second blade holder disposed on the second insulator, two isolating blades rotatably disposed on the first blade holder, and a locking mechanism. The locking mechanism includes a pull ring rotatably disposed between the two isolating blades, a locking hook rotatably disposed between the two isolating blades and cooperating with the pull ring, and a limit plate disposed on the second blade holder. The limit plate is provided with a limit hole. One end of the locking hook has a hook-shaped body that cooperates with the limit hole. The hook-shaped body moves with the locking hook and can be snapped into the limit hole, thereby forming a limit cooperation between the locking hook and the limit plate."

[0004] In view of the above description, the applicant believes that the following problems exist:

[0005] During use, the utility model has a locking mechanism including a pull ring rotatably arranged between the two isolation blades, a locking hook rotatably arranged between the two isolation blades and cooperating with the pull ring, and a limit plate arranged on the second blade holder. A limit hole is provided on the limit plate, and one end of the locking hook has a hook-shaped body cooperating with the limit hole. The hook-shaped body moves with the locking hook and can be buckled in the limit hole, and constitutes a limit cooperation between the locking hook and the limit plate. The locking function is complicated and it is difficult to realize automatic control of the locking function. The on and off of the switch needs to be manually controlled, the safety factor is low, and the risk of accidental electric shock to the operator is increased. Therefore, it is necessary to improve a double-grounded high-voltage isolating switch to solve the above problems. Utility Model Content

[0006] In order to overcome the problems in the prior art that the locking function is complex and difficult to realize automatic control of the locking function, the on and off of the switch needs to be manually controlled, the safety factor is low, and the risk of accidental electric shock to the operator is increased.

[0007] The technical solution of the utility model is: a double-grounded high-voltage disconnector, comprising a mounting seat, insulators are provided on both sides of the mounting seat, a conductive plate is installed on the upper side of the insulator, a power connection plate can be slidably connected to the conductive plate, the power connection plate can be connected to the conductive plates on both sides to switch the circuit on and off, a track is provided above the conductive plate, the power connection plate slides in the track, and an isolation cover is used to shield the mounting seat, insulators, conductive plates, power connection plates, and tracks, and the isolation cover is made of bakelite.

[0008] Preferably, the device is isolated and protected by an isolation cover to prevent casualties caused by accidental touch. At the same time, the conductive plates on both sides are connected by a power board. The movement of the power board here is remotely controlled. Pushing the power board to move within the track can facilitate precise positioning, while reducing the proximity of people and thus reducing accidental injuries to people. At the same time, the isolation cover can protect the power board from displacement or damage caused by accidentally dropped parts, tools, etc.

[0009] Preferably, the track is two groups of long plates arranged along the length direction of the conductive plate, and the power connection plate moves between the two groups of long plates. The distance between the two groups of long plates is equal to the width between the power connection plates. The conductive plate is provided with countersunk holes in the middle area of ​​the two groups of long plates. Bolts can be installed in the countersunk holes. The bolts are connected to the insulators. The bolts are spaced apart from the power connection plate. By providing countersunk holes on the conductive plate to connect the insulators, the bolts are sunk to the upper surface of the conductive plate, making the power connection plate slide more smoothly.

[0010] Preferably, a grounding post is connected to the side of the conductive plate away from the insulator, and a mounting hole is provided on the side of the grounding post away from the conductive plate, in which a terminal can be installed. A grounding post is connected to the side of the conductive plate away from the insulator, and one side of the grounding post is threaded, and the conductive plate has a hole corresponding to the grounding post. The grounding post is screwed into the conductive plate and then fastened with a nut to prevent loosening. By connecting the grounding posts to the conductive plates on both sides, a short circuit is prevented, which may cause damage to personnel or equipment.

[0011] Preferably, an opening is provided in the area of ​​the power board corresponding to the top of the isolation cover, and a roller can be placed in the opening. The roller is made of insulating rubber. The movement of the power board is controlled by the roller opening to achieve the effect of fully automatic or semi-automatic switching on and off of the device, reducing the proximity of people. The roller is made of insulating rubber to prevent voltage and current from being transmitted to the outside of the isolation cover.

[0012] Preferably, the two groups of long plates are provided with relatively extended support plates on the side away from the conductive plate, and the support plates can support the top surface of the power connection plate. By providing the support plates on the side of the long plates away from the conductive plate, the power connection plate is limited again to prevent the power connection plate from shaking or falling, reducing the number of people approaching to correct it.

[0013] Preferably, the roller is mounted on a roller in a frame, and the frame includes two groups of laminating plates respectively laminating on both sides of the isolation cover in the width direction and a fixed plate connected to the laminating plates on the top of the laminating plates. A motor is connected to the outside of the frame, and the output shaft of the motor is connected to the roller. The reason why the roller can be connected to the power board and drive the power board to move is that the roller is mounted on the frame, and the output shaft of the motor drives the roller to rotate through the roller.

[0014] Preferably, a long hole is provided on the bonding plate, and the length direction of the long hole is parallel to the isolation cover. The isolation cover is provided with a corresponding threaded hole at the position corresponding to the long hole. In order to adjust the downward pressure of the roller docking the electric plate, the position of the long hole in the threaded hole can be adjusted to achieve appropriate downward pressure, to prevent the downward pressure from being too small, the electric plate from not moving, or the downward pressure from being too large, and the friction between the electric plate and the conductive plate from being too large.

[0015] Beneficial effects of the utility model:

[0016] 1. The device is isolated and protected by an isolation cover to prevent casualties caused by accidental touch. At the same time, the conductive plates on both sides are connected by a power board. The movement of the power board here is remotely controlled. Pushing the power board to move within the track can facilitate accurate positioning, while reducing the proximity of people and thus reducing accidental injuries to people. At the same time, the isolation cover can protect the power board from deviation or damage caused by accidentally dropped parts, tools, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the power board of the utility model;

[0019] Figure 3 This is a schematic diagram of the track structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the mounting hole structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the framework structure of the utility model.

[0022] Explanation of the accompanying reference numerals: 1. Mounting seat; 2. Insulator; 3. Conductive plate; 32. Countersunk hole; 33. Grounding column; 331. Mounting hole; 4. Power board; 5. Track; 51. Long board; 52. Support plate; 6. Isolation cover; 61. Opening; 62. Threaded hole; 7. Roller; 8. Frame; 81. Roller; 82. Laminating plate; 821. Long hole; 83. Fixing plate; 84. Motor; 841. Output shaft. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] See also Figure 1-Figure 5 The utility model provides an embodiment: a double-grounded high-voltage disconnector, comprising a mounting base 1, insulators 2 are provided on both sides of the mounting base 1, a conductive plate 3 is installed on the upper side of the insulator 2, a power connection plate 4 can be slidably connected to the conductive plate 3, the power connection plate 4 can connect the conductive plates 3 on both sides to switch the circuit on and off, a track 5 is provided above the conductive plate 3, the power connection plate 4 slides in the track 5, and the mounting base 1, insulator 2, conductive plate 3, power connection plate 4, and track 5 are shielded by an isolation cover 6, and the isolation cover 6 is made of bakelite. The device is isolated and protected by an isolation cover 6 to prevent casualties caused by accidental touch. At the same time, the conductive plates 3 on both sides are connected through the power board 4. The movement of the power board 4 is remotely controlled. Pushing the power board 4 to move within the track 5 can facilitate accurate positioning, while reducing the proximity of people and thus reducing accidental injuries to people. At the same time, the isolation cover 6 can protect the power board 4 from deviation or damage caused by accidentally dropped parts, tools, etc. Since the device does not have the function of arc extinguishing, the isolation cover 6 made of bakelite can also isolate the arc.

[0025] See also Figure 1-Figure 4In this embodiment, the track 5 comprises two sets of long plates 51 arranged along the length of the conductive plate 3. The connection plate 4 moves between the two sets of long plates 51. The distance between the two sets of long plates 51 is equal to the width between the connection plates 4. The conductive plate 3 has countersunk holes 32 in the middle of the two sets of long plates 51. These countersunk holes 32 accommodate bolts that connect to the insulator 2 and are spaced apart from the connection plate 4. By providing the countersunk holes 32 in the conductive plate 3 to connect to the insulator 2, the bolts sink into the upper surface of the conductive plate 3, making the connection plate 4 slide more smoothly. A grounding post 33 is connected to the side of the conductive plate 3 facing away from the insulator 2. Mounting holes 331 are provided on the side of the grounding post 3 facing away from the conductive plate 3. These mounting holes 331 accommodate terminal blocks. The side of the conductive plate 3 away from the insulator 2 is connected to a grounding post 33. One side of the grounding post 33 is threaded, and the conductive plate 3 has a hole corresponding to the grounding post 33. The grounding post 33 is screwed into the conductive plate 3 and then tightened with a nut to prevent loosening. By connecting the grounding post 33 to the conductive plates 3 on both sides, a short circuit is prevented, which may cause damage to personnel or equipment. The top of the isolation cover 6 is provided with an opening 61 corresponding to the area of ​​the power board 4. The opening 61 can be used to place a roller 7 made of insulating rubber. The roller 7 is used to control the movement of the power board 4 to achieve the effect of fully automatic or semi-automatic switching of the device, reducing the number of people approaching. The roller 7 is made of insulating rubber to prevent voltage and current from being transmitted to the outside of the isolation cover 6. The two groups of long plates 51 are provided with relatively extended support plates 52 on the side away from the conductive plate 3. The support plates 52 can support the top surface of the power board 4. By arranging a support plate 52 on the side of the long plate 51 away from the conductive plate 3, the connecting plate 4 is limited again to prevent the connecting plate 4 from shaking or falling, reducing the number of people approaching for correction.

[0026] See also Figure 2-Figure 5 In this embodiment, the roller 7 is mounted on a roller 81 within a frame 8. The frame 8 includes two sets of laminating plates 82 that are respectively attached to both sides of the isolation cover 6 in the width direction, and a fixing plate 83 connected to the laminating plates 82 at the top. A motor 84 is connected to the outside of the frame 8, and the output shaft 841 of the motor 84 is connected to the roller 81. The roller 7 can be connected to the power board 4 and drive the power board 4 to move because the roller 7 is mounted on the frame 8, and the output shaft 841 of the motor 84 drives the roller 7 to rotate via the roller 81. The laminating plate 82 is provided with an elongated hole 821, the length direction of which is parallel to the isolation cover 6. The isolation cover 6 has a corresponding threaded hole 62 at the position corresponding to the elongated hole 821. In order to adjust the downward pressure of the roller 7 on the connecting plate 4, the position of the long hole 821 in the threaded hole 62 can be adjusted to achieve appropriate downward pressure to prevent the downward pressure from being too small and the connecting plate 4 from not moving, or the downward pressure from being too large and the friction between the connecting plate 4 and the conductive plate 3 from being too large.

[0027] During operation, the worker controls the motor 84 to rotate the roller 7. The rotation of the roller 7 causes the connection plate 4 to move within the track 5. When the connection plate 4 moves to the connection plate 4 of another insulator 2, the device is short-circuited and conductive. Thanks to the isolation cover 6, it can effectively prevent people from accidentally touching or tools or parts from falling onto the connection plate 4 or the conductive plate 3, causing casualties or component damage. At the same time, the conductive plate 3 is also connected to the grounding post 33. When the circuit is short-circuited, the current will flow from the grounding post 33 to the ground, avoiding personal injury and equipment loss. The reason for providing double grounding on the conductive plates 3 on the insulators 2 on both sides is to prevent the worker's body from contacting the circuit when the circuit is open, forming a loop with the ground and causing physical injury. The use of double grounding here can effectively prevent current from flowing through the worker's body and choose to flow through the grounding post 33 with smaller resistance, thereby protecting the worker. When the worker controls the motor 84 to rotate the roller 7 in the opposite direction, the connection plate 4 will retract, realizing the circuit-breaking function of the device.

[0028] Through the above steps, the device is isolated and protected by the isolation cover 6 to prevent casualties caused by accidental touch. At the same time, the conductive plates 3 on both sides are connected through the power board 4. Here, the movement of the power board 4 is remotely controlled. Pushing the power board 4 to move within the track 5 can facilitate accurate positioning, while reducing the proximity of personnel and thus reducing accidental injuries to personnel. At the same time, the isolation cover 6 can protect the power board 4 from deviation or damage caused by accidentally dropped parts, tools, etc., so as to solve the problem that the locking function in the prior art is complex and it is difficult to realize the automatic control locking function. The on and off of the switch needs to be manually controlled, the safety factor is low, and the risk of accidental electric shock to the operator is increased.

Claims

1. A double-grounded high-voltage disconnect switch, comprising a mounting base (1), with insulators (2) provided on both sides of the mounting base (1), characterized in that: A conductive plate (3) is installed on the upper side of the insulator (2), and a power connection plate (4) can be slidably connected to the conductive plate (3). The power connection plate (4) can connect the conductive plates (3) on both sides to switch the circuit on and off. A track (5) is provided above the conductive plate (3), and the power connection plate (4) slides in the track (5). An isolation cover (6) is provided to shield the mounting seat (1), the insulator (2), the conductive plate (3), the power connection plate (4), and the track (5). The isolation cover (6) is made of bakelite.

2. The double-grounded high-voltage disconnect switch according to claim 1, characterized in that: The track (5) is composed of two groups of long plates (51) arranged along the length direction of the conductive plate (3). The power connection plate (4) moves between the two groups of long plates (51). The distance between the two groups of long plates (51) is equal to the width between the power connection plates (4). The conductive plate (3) is provided with a countersunk hole (32) in the middle area of ​​the two groups of long plates (51). Bolts can be installed in the countersunk hole (32). The bolts are connected to the insulator (2). The bolts are spaced apart from the power connection plate (4).

3. The double-grounded high-voltage disconnect switch according to claim 2, characterized in that: A grounding column (33) is connected to the side of the conductive plate (3) away from the insulator (2), and a mounting hole (331) is provided on the side of the grounding column (33) away from the conductive plate (3). A wiring terminal can be mounted in the mounting hole (331).

4. The double-grounded high-voltage disconnect switch according to claim 3, characterized in that: An opening (61) is provided in the area of ​​the top of the isolation cover (6) corresponding to the power board (4), and a roller (7) can be placed in the opening (61), and the roller (7) is made of insulating rubber.

5. The double-grounded high-voltage disconnect switch according to claim 2, characterized in that: The two groups of long plates (51) are provided with relatively extending support plates (52) on one side away from the conductive plate (3), and the support plates (52) are capable of supporting the top surface of the power connection plate (4).

6. The double-grounded high-voltage disconnect switch according to claim 4, characterized in that: The roller (7) is mounted on a roller (81) in a frame (8). The frame (8) comprises two sets of laminating plates (82) respectively laminating to both sides of the isolation cover (6) in the width direction and a fixing plate (83) connected to the laminating plates (82) at the top of the laminating plates (82). A motor (84) is connected to the outside of the frame (8), and an output shaft (841) of the motor (84) is connected to the roller (81).

7. The double-grounded high-voltage disconnector according to claim 6, characterized in that: The laminating plate (82) is provided with an elongated hole (821), the length direction of the elongated hole (821) is parallel to the isolation cover (6), and the isolation cover (6) is provided with a corresponding threaded hole (62) at a position corresponding to the elongated hole (821).

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