High-voltage switch cabinet with grounding device

Abstract

The utility model discloses a high-voltage switch cabinet with a grounding device, which comprises a switch cabinet, a mounting rack is arranged in the switch cabinet, circuit breakers are respectively arranged at the upper end of the mounting rack, and the high-voltage switch cabinet further comprises a fixing mechanism. The fixing mechanism comprises a groove, sliding rods, fixing plates and telescopic rods, the groove is formed in the inner wall of the rear side of the switch cabinet, the telescopic rods are arranged on the upper inner wall and the lower inner wall of the groove respectively, the telescopic ends of the three transversely adjacent telescopic rods are fixedly connected with the side face, away from the center of the groove, of one fixing plate, and the sliding rods are arranged between the upper inner wall and the lower inner wall of the groove respectively; according to the high-voltage switch cabinet with the grounding device, the maintenance, disassembly and replacement time of the grounding device is greatly shortened, the power failure time of equipment is shortened, the maintenance efficiency is improved, and the maintenance cost is reduced. And the influence on the operation of the power system is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to high voltage switch cabinet grounding technical field, concretely is a kind of high voltage switch cabinet with grounding device. BACKGROUND

[0002] High voltage switch cabinet refers to be used in power system, can be under normal and fault conditions, to high voltage circuit is connected, disconnect, control and protection electrical equipment. It is composed of circuit breaker, disconnecting switch, load switch, grounding switch, fuse, mutual inductor, bus, cabinet and other components, widely used in power generation, power transmission, power distribution and other links, the role of high voltage switch cabinet mainly includes: normal operation, the on-off of control circuit, realizes the distribution and transmission of electric energy;When fault, quickly cut off the fault circuit, protect equipment and line safety;Isolation power supply, facilitate maintenance and maintenance, it is crucial to add grounding device in its interior, when equipment insulation damage leads to shell electrification, grounding device can introduce current into ground, avoid personnel electric shock;

[0003] The existing high voltage switch cabinet with grounding device, when installing grounding device to high voltage switch cabinet interior, first, the mounting hole of grounding switch is corresponded with the mounting hole corresponding to the rear side of switch cabinet, then fixed bolt is inserted into the coincident mounting hole, then with the aid of other auxiliary installation tools, bolt is tightened one by one, high voltage switch cabinet interior space is usually relatively narrow, when replacing or overhauling grounding switch, operator needs to operate in limited space, this makes that operation difficulty increases, possibly leading to operator difficult to deploy tool, increase the time and manpower cost of disassembly and replacement, prolong the equipment outage time, affect the normal power supply of power system, bring inconvenience to production and life, for this, we propose a kind of high voltage switch cabinet with grounding device. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem to overcome the existing defects, provide a kind of high voltage switch cabinet with grounding device, greatly shorten the grounding device overhaul disassembly replacement time, shorten the equipment outage time, reduce the influence to power system operation, can effectively solve the problems in background art.

[0005] To realize the above-mentioned purpose, the utility model provides the following technical scheme: a kind of high voltage switch cabinet with grounding device, including switch cabinet, the inside of switch cabinet is equipped with mounting bracket, the upper end of mounting bracket is equipped with circuit breaker respectively, further include fixed mechanism;

[0006] The fixed mechanism comprises a recess, a sliding rod, a fixed plate and an extension rod, the rear side inner wall of the switch cabinet is provided with the recess, the upper and lower inner walls of the recess are respectively provided with the extension rod, the extension ends of the three extension rods transversely adjacent are all fixedly connected with one side of the fixed plate away from the center of the recess, the upper and lower inner walls of the recess are respectively provided with the sliding rod, the left and right ends of the fixed plate are all slidably connected with the outside of the sliding rod, the inside of the recess is provided with the grounding switch, and the side of the fixed plate close to the center of the recess is all closely combined with the grounding switch, so that the grounding device maintenance dismounting replacement time is greatly shortened, the equipment power-off time is shortened, and the influence on the power system operation is reduced.

[0007] Further, the front side of the switch cabinet is provided with a single-chip microcomputer, and the input end of the single-chip microcomputer is electrically connected with an external power supply to provide electrical connection of each electric appliance.

[0008] Further, the fixed mechanism further comprises springs, the springs are movably sleeved on the outside of the extension rods, and the springs are all located between the fixed plate and the upper and lower inner walls of the recess to realize springback of the fixed plate.

[0009] Further, the fixed mechanism further comprises adjusting rods, sliding grooves and sliding blocks, the rear side wall of the switch cabinet is provided with the sliding groove, the inside of the sliding groove is slidably connected with the sliding block, and the left and right ends of the fixed plate are rotatably connected with the adjusting rods; one end of the adjusting rod close to the center of the recess is rotatably connected with the inside of the sliding block adjacent to the same side, so that the two fixed plates are conveniently driven to move.

[0010] Further, the rear side of the circuit breaker is provided with the grounding bus, and the bottom end of the grounding bus is fixedly connected with the static contact of the grounding switch, so that the circuit breaker and the grounding device are stably connected.

[0011] Further, the left end of the rotating rod in the grounding switch is fixedly connected with a gear one, the left side inner wall of the switch cabinet is rotatably connected with a rotating column, the right end of the rotating column is fixedly connected with a gear two, and the gear one is fixedly connected with the gear two, so that the grounding switch is automatically opened and closed.

[0012] Further, the left side of the switch cabinet is provided with a motor, the right end of the output shaft of the motor is fixedly connected with the left end of the rotating column, the input end of the motor is electrically connected with the output end of the single-chip microcomputer, and the opening and closing drive is provided.

[0013] Compared with the prior art, the high-voltage switch cabinet with the grounding device has the following advantages:

[0014] By sliding the sliding block, the adjusting rod pushes the corresponding fixed plate to stably slide to the upper and lower sides of the groove under the guidance of the slide rod, the spring contracts, the grounding switch is accurately placed in the groove, the sliding block is loosened, the spring rebounds rapidly by virtue of the elastic potential, drives the fixed plate to closely close to the grounding switch, the grounding switch is fastened in the groove, when the grounding device is overhauled and replaced, other auxiliary tools are not needed, the grounding switch can be disassembled and reassembled in a short time, the equipment power-off time is reduced, and the influence on the power system operation is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structure schematic view of the utility model;

[0016] Figure 2 It is a structure schematic view of the utility model;

[0017] Figure 3 It is a structure schematic view of the utility model;

[0018] Figure 4 It is a structure schematic view of the utility model;

[0019] Figure 5 It is a structure schematic view of the utility model;

[0020] In the drawing: 1 switch cabinet, 2 mounting frame, 3 circuit breaker, 4 grounding bus, 5 grounding switch, 6 fixing mechanism, 61 recess, 62 slide rod, 63 fixed plate, 64 telescopic rod, 65 spring, 66 adjusting rod, 67 sliding groove, 68 sliding block, 7 gear one, 8 rotating column, 9 gear two, 10 motor, 11 single-chip microcomputer. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer to Figures 1-5The embodiment provides a technical scheme: a high-voltage switch cabinet with a grounding device, comprising a switch cabinet 1, an installation frame 2 arranged in the switch cabinet 1, circuit breakers 3 arranged at the upper ends of the installation frame 2 respectively, a fixing mechanism 6, a single-chip microcomputer 11 arranged on the front side of the switch cabinet 1, an input end of the single-chip microcomputer 11 electrically connected with an external power supply, grounding buses 4 arranged at the rear sides of the circuit breakers 3 respectively, static contacts of grounding switches 5 fixedly connected with the bottom ends of the grounding buses 4, a gear one 7 fixedly connected with the left end of a rotating rod arranged in the grounding switch 5, a rotating column 8 rotatably connected with the left side inner wall of the switch cabinet 1, a gear two 9 fixedly connected with the right end of the rotating column 8, the gear one 7 fixedly connected with the gear two 9, a motor 10 arranged on the left side of the switch cabinet 1, the output shaft right end of the motor 10 fixedly connected with the left end of the rotating column 8, the input end of the motor 10 electrically connected with the output end of the single-chip microcomputer 11, after installation, the bottom ends of the grounding buses 4 at the rear sides of the circuit breakers 3 are connected with the static contacts of the grounding switches 5, in the normal operation state, the grounding switches 5 keep open, the circuit breakers 3 orderly work, the grounding buses 4 are electrified but not connected with the ground, when the high-voltage switch cabinet needs to be overhauled after long-time operation, the single-chip microcomputer 11 sends an instruction to control the motor 10 to start operation, the output shaft of the motor 10 drives the rotating column 8 to rotate, and then drives the gear two 9 to rotate, the gear one 7 meshed with the gear two 9 rotates, thereby driving the rotating rod arranged in the grounding switch 5 to move, so that the moving contact and the static contact are in close contact, the grounding switch 5 is switched to the closed state, in this way, the grounding buses 4 are successfully connected with the ground, the residual electric charge in the equipment is released, a safe working environment is created for the overhauling personnel, and the occurrence of electric shock accidents is effectively avoided;

[0023] The fixing mechanism 6 comprises a groove 61, a sliding rod 62, a fixing plate 63 and an expansion rod 64. The groove 61 is arranged on the inner wall of the rear side of the switch cabinet 1. The upper and lower inner walls of the groove 61 are respectively provided with the expansion rod 64. The expansion ends of the three expansion rods 64 transversely adjacent are respectively fixedly connected to the side of the fixing plate 63 away from the center of the groove 61. The sliding rod 62 is arranged between the upper and lower inner walls of the groove 61. The left and right ends of the fixing plate 63 are respectively slidably connected to the outside of the sliding rod 62. The inside of the groove 61 is provided with the grounding switch 5 (the grounding switch 5 is a grounding device commonly used in the prior art, which refers to a mechanical grounding device for releasing the static charge of the equipment under maintenance and the circuit and ensuring the personal safety of the maintenance personnel during power-off maintenance). The side of the fixing plate 63 close to the center of the groove 61 is tightly attached to the grounding switch 5. The fixing mechanism 6 further comprises a spring 65. The spring 65 is movably sleeved on the outside of the expansion rod 64. The spring 65 is arranged between the fixing plate 63 and the upper and lower inner walls of the groove 61. The fixing mechanism 6 further comprises an adjusting rod 66, a sliding groove 67 and a sliding block 68. The sliding groove 67 is arranged on the rear wall of the switch cabinet 1. The sliding groove 67 is slidably connected with the sliding block 68. The left and right ends of the fixing plate 63 are respectively rotatably connected with the adjusting rod 66. The end of the adjusting rod 66 close to the center of the groove 61 is rotatably connected to the inside of the sliding block 68 on the same side. During the operation of the high-voltage switch cabinet, the reliable installation and accurate operation of the grounding device are the key to ensure the safety of the equipment. When the grounding switch 5 is installed, the operator first pushes the sliding block 68 to make it slide to the center along the sliding groove 67. At this time, the adjusting rod 66 plays a transmission role, pushes the corresponding fixing plate 63 to stably slide to the upper and lower sides of the groove 61 under the guidance of the sliding rod 62, and then compresses the spring 65. Then, the grounding switch 5 is accurately placed in the groove 61. Subsequently, the sliding block 68 is released. At this time, the spring 65 rapidly rebounds relying on the elastic potential energy, drives the fixing plate 63 to tightly approach the grounding switch 5, and tightly fastens the grounding switch 5 in the groove 61.

[0024] The working principle of the high-voltage switchgear with grounding device provided by this utility model is as follows: During the operation of the high-voltage switchgear, the reliable installation and accurate operation of the grounding device are crucial to ensuring equipment safety. When installing the grounding switch 5, the operator first pushes the slider 68, causing it to slide along the slide groove 67 towards the center. At this time, the adjusting rod 66 plays a transmission role, pushing the corresponding fixing plate 63 to slide smoothly towards the upper and lower sides of the groove 61 under the guidance of the sliding rod 62, thereby compressing the spring 65. Then, the grounding switch 5 is accurately placed in the groove 61, and then the slider 68 is released. At this time, the spring 65 rebounds rapidly due to its elastic potential energy, causing the fixing plate 63 to move tightly towards the grounding switch 5, firmly securing it in the groove 61. After installation, the circuit breaker is turned off. The bottom end of the grounding busbar 4 on the rear side of the circuit breaker 3 is connected to the stationary contact of the grounding switch 5. Under normal operating conditions, the grounding switch 5 remains open, the circuit breaker 3 operates in an orderly manner, and the grounding busbar 4 is energized but not connected to the earth. When the high-voltage switchgear needs maintenance after long-term operation, the microcontroller 11 will issue a command to control the motor 10 to start running. The output shaft of the motor 10 drives the rotating column 8 to rotate, which in turn drives the gear 9 to rotate. The gear 7 meshing with it rotates accordingly, thereby driving the rotating rod inside the grounding switch 5 to move, so that the moving contact and the stationary contact are in close contact, and the grounding switch 5 switches to the closed state. In this way, the grounding busbar 4 is successfully connected to the earth, the residual charge in the equipment is released, creating a safe working environment for maintenance personnel and effectively avoiding electric shock accidents.

[0025] It is worth noting that the microcontroller 11 disclosed in the above embodiments can be an LPC812, and the motor 10 can be a YS8024. The microcontroller 11 controls the operation of the motor 10 using methods commonly used in the prior art.

[0026] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A high-voltage switchgear with a grounding device, comprising a switchgear (1), wherein the switchgear (1) is provided with a mounting frame (2) inside, and a circuit breaker (3) is provided at the upper end of the mounting frame (2), characterized in that: It also includes fixed mechanisms (6); Fixed mechanism (6): It includes a groove (61), a sliding rod (62), a fixed plate (63) and a telescopic rod (64). The inner wall of the rear side of the switch cabinet (1) is provided with a groove (61). The upper and lower inner walls of the groove (61) are respectively provided with telescopic rods (64). The telescopic ends of the three horizontally adjacent telescopic rods (64) are all fixedly connected to the side of a fixed plate (63) away from the center of the groove (61). The upper and lower inner walls of the groove (61) are respectively provided with sliding rods (62). The left and right ends of the fixed plate (63) are slidably connected to the outside of the sliding rods (62). The inside of the groove (61) is provided with a grounding switch (5). The side of the fixed plate (63) near the center of the groove (61) is tightly fitted with the grounding switch (5).

2. A high-voltage switchgear with a grounding device according to claim 1, characterized in that: The front side of the switch cabinet (1) is equipped with a microcontroller (11), and the input terminal of the microcontroller (11) is electrically connected to an external power source.

3. A high-voltage switchgear with a grounding device according to claim 1, characterized in that: The fixing mechanism (6) also includes springs (65), which are movably sleeved on the outside of the telescopic rod (64). The springs (65) are all located between the upper and lower inner walls of the fixing plate (63) and the groove (61).

4. A high-voltage switchgear with a grounding device according to claim 1, characterized in that: The fixing mechanism (6) also includes an adjusting rod (66), a sliding groove (67) and a slider (68). The rear side wall of the switch cabinet (1) is provided with a sliding groove (67). The slider (68) is slidably connected inside the sliding groove (67). The left and right ends of the fixing plate (63) are rotatably connected to the adjusting rod (66). The end of the adjusting rod (66) near the center of the groove (61) is rotatably connected to the slider (68) on the same side.

5. A high-voltage switchgear with a grounding device according to claim 1, characterized in that: Each circuit breaker (3) is provided with a grounding busbar (4) on its rear side, and the bottom end of the grounding busbar (4) is fixedly connected to the stationary contact of the grounding switch (5).

6. A high-voltage switchgear with a grounding device according to claim 2, characterized in that: The left end of the rotating rod inside the grounding switch (5) is fixedly connected to a gear 1 (7), and the left inner wall of the switch cabinet (1) is rotatably connected to a rotating column (8). The right end of the rotating column (8) is fixedly connected to a gear 2 (9), and gear 1 (7) and gear 2 (9) are fixedly connected.

7. A high-voltage switchgear with a grounding device according to claim 6, characterized in that: The switch cabinet (1) has a motor (10) on the left side. The right end of the output shaft of the motor (10) is fixedly connected to the left end of the rotating column (8). The input end of the motor (10) is electrically connected to the output end of the microcontroller (11).

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