A device for preventing misoperation of high voltage cabinet

Abstract

The invention discloses an anti-misoperation device for a high-voltage cabinet, which relates to the field of anti-misoperation of a high-voltage cabinet. The anti-misoperation of a circuit breaker mechanism, a grounding mechanism and a self-locking door mechanism are integrated into one operation through gear linkage. The anti-misoperation device for a high-voltage cabinet provided with power by a transmission mechanism does not require a person to approach for manual operation, has a high safety factor, is simple and effective in structure, can lock a position, prevent misalignment and loose connection, has a simple mechanical linkage of the circuit breaker mechanism, a grounding mechanism and a self-locking door mechanism, has a simple structure and a long service life, absolutely prevents misoperation, has a good anti-misoperation effect, simplifies a multi-step operation to one step, has a short operation time and a small potential safety hazard, further isolates the circuit breaker and the busbar group through an insulating plate, and has a high safety performance.

Description

Technical Field

[0001] The present invention relates to the field of preventing misoperation of a high-voltage cabinet, and in particular to a device for preventing misoperation of a high-voltage cabinet. Background Art

[0002] High and low voltage switchgear is a device that connects high voltage. Generally, power supply bureaus and substations use high voltage cabinets. High voltage cabinets are generally electrical equipment that is assembled with some switches and circuit breakers and other protective devices. They are mainly used to receive and distribute electrical energy and implement control, protection and monitoring functions on the system. When operating the high voltage cabinet, it is necessary to ensure that the grounding knife is in the open position before the circuit breaker can be moved to the working position. The grounding switch can only be closed when the circuit breaker is in the test position. Once the operation is wrong, the circuit breaker is combined with the live grounding knife or the grounding knife is in the closed state. The high voltage in the cabinet will Dumping electric charge onto the zero-potential cabinet will generate an arc inside the cabinet, causing the operator to be electrocuted to death or catch fire, resulting in more serious consequences. It is also necessary to ensure that the cabinet door of the grounding room cannot be opened when the grounding knife is closed to prevent workers from accidentally entering the energized interval and getting electric shock. The existing high-voltage cabinet self-locking device often adopts a separate transmission type interlock, which is unreliable. Once the transmission mechanism ages or fails and is damaged, serious consequences will occur. The opening and power supply operations are cumbersome and time-consuming, increasing safety hazards. Manual operation is required, which has a high risk factor, complex structure, short life, unreliable effect and low safety factor. Summary of the Invention

[0003] In order to overcome the shortcomings of the background technology, the present invention discloses an anti-misoperation device for a high-voltage cabinet. The present invention provides power for the device through a transmission mechanism, does not require human intervention for manual operation, has a high safety factor, a simple and effective structure, can lock the position to prevent dislocation and loose connection, and has a simple structure and a long service life through simple mechanical linkage of a circuit breaker mechanism, a grounding mechanism and a self-locking door mechanism. It absolutely prevents misoperation and has a good anti-misoperation effect, simplifies multi-step operations to one step, shortens operation time, and reduces safety hazards. The circuit breaker and busbar group are further isolated by an insulating plate, and has high safety performance.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0005] A device for preventing misoperation of a high-voltage cabinet comprises a circuit breaker mechanism, a grounding mechanism fixed at the lower end of the circuit breaker mechanism, a self-locking door mechanism mounted on the grounding mechanism, and a transmission mechanism provided on the grounding mechanism. Misoperation of the circuit breaker mechanism, the grounding mechanism and the self-locking door mechanism are integrated into one operation through gear linkage.

[0006] The circuit breaker mechanism includes a main cabinet, which is slidably connected to a horizontal slide bar via a horizontal slide member, the lower end of the horizontal slide bar is fixed with a horizontal tooth, the upper end of the horizontal slide bar is fixed with a workbench, the circuit breaker is fixed on the workbench, the busbar group is fixed on the main cabinet, and the main cabinet door is hingedly connected to the main cabinet.

[0007] The grounding mechanism includes a ground knife cabinet, which is slidably connected to a vertical slide bar via a vertical slide, and a vertical slide tooth is fixed on the vertical slide bar, and an insulating plate is fixed on the vertical slide bar. The ground knife cabinet is connected to a rotating shaft through a bearing, and a connecting rod and a grounding knife are fixed on the rotating shaft. The connecting rod and the grounding knife are in a straight line, and a locking rod is fixed to the end of the connecting rod. The grounding end of the ground knife cabinet is insulated and fixed at the upper end of the grounding knife, and the grounding end is connected to the outgoing end of the busbar group, and the outgoing end of the busbar group is connected to the load end.

[0008] The transmission mechanism includes a motor base, which is fixed on the floor knife cabinet. A motor is fixed on the motor base. The output end of the motor is connected to a power shaft through a coupling. The power shaft is connected to the floor knife cabinet through a bearing. A clamping ring is installed on the other end of the power shaft. An operating hole is opened on the clamping ring. A gear is keyed to the power shaft, and the gear is engaged with the horizontal teeth and the vertical sliding teeth through gears.

[0009] The self-locking door mechanism includes a floor cabinet door, which is connected to the floor knife cabinet through a hinge. A movable bolt is fixed on the inner side of the floor cabinet door, and a fixed bolt is fixed on the inner side of the floor knife cabinet corresponding to the movable bolt.

[0010] The fixed bolt and the movable bolt are in a straight line when the floor cabinet door is closed. The fixed bolt and the movable bolt are in an L-shape with an opening at the upper end.

[0011] The width of the inner side of the vertical sliding teeth is greater than the width of the outer side of the horizontal teeth.

[0012] The workbench, insulating plate, connecting rod and locking rod are all made of insulating materials.

[0013] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0014] The anti-misoperation device for a high-voltage cabinet described in the present invention provides power for the device through a transmission mechanism, does not require a person to approach for manual operation, has a high safety factor, a simple and effective structure, can lock the position to prevent dislocation and loose connection, and has a simple structure and a long service life through simple mechanical linkage of a circuit breaker mechanism, a grounding mechanism and a self-locking door mechanism. It absolutely prevents misoperation and has a good anti-misoperation effect, simplifies multi-step operations to one step, shortens operation time, and reduces safety hazards. The circuit breaker and the busbar group are further isolated by an insulating plate, and the safety performance is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0016] Figure 2 It is a schematic diagram of the left three-dimensional structure of the present invention;

[0017] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0018] Figure 4 It is a front view of the internal structure of the present invention;

[0019] Figure 5 A three-dimensional schematic diagram of the self-locking door mechanism of the present invention

[0020] Figure 6 This is an enlarged structural diagram of point A of the present invention;

[0021] 1. Circuit breaker mechanism; 101. Main cabinet body; 102. Main cabinet door; 103. Rocker hole; 104. Horizontal slide; 105. Horizontal slide bar; 106. Horizontal gear; 107. Workbench; 108. Circuit breaker; 109. Busbar group; 2. Transmission mechanism; 201. Motor; 202. Motor seat; 203. Power shaft; 204. Clamping ring; 205. Operation hole; 206. Gear; 3. Grounding mechanism; 301. Ground knife cabinet; 302. Vertical slide bar; 303. Vertical slide; 304. Vertical slide gear; 305. Insulation plate; 306. Rotating shaft; 307. Connecting rod; 308. Locking rod; 309. Load terminal; 310. Grounding terminal; 311. Grounding knife; 4. Self-locking door mechanism; 401. Ground cabinet door; 402. Fixed bolt; 403. Movable bolt; DETAILED DESCRIPTION

[0022] The present invention can be explained in detail by the following examples, the purpose of which is to disclose the present invention and to protect all technical improvements within the scope of the present invention.

[0023] Combined with attachment Figures 1 to 4 A device for preventing misoperation of a high-voltage cabinet includes a circuit breaker mechanism 1. A grounding mechanism 3 is fixed to the lower end of the circuit breaker mechanism 1. A self-locking door mechanism 4 is mounted on the grounding mechanism 3. A transmission mechanism 2 is provided on the grounding mechanism 3. Misoperation of the circuit breaker mechanism 1, the grounding mechanism 3, and the self-locking door mechanism 4 are integrated into one operation through gear linkage.

[0024] The circuit breaker mechanism 1 includes a main cabinet 101, on which a horizontal slide 105 is slidably connected via a horizontal slide 104. A horizontal tooth 106 is fixed to the lower end of the horizontal slide 105, and a workbench 107 is fixed to the upper end of the horizontal slide 105. A circuit breaker 108 is fixed to the workbench 107. A busbar group 109 is fixed to the main cabinet 101, and a main cabinet door 102 is hingedly connected to the main cabinet 101.

[0025] The grounding mechanism 3 includes a ground knife cabinet 301, which is slidably connected to a vertical slide bar 302 through a vertical slide 303. A vertical slide tooth 304 is fixed on the vertical slide bar 302, and an insulating plate 305 is fixed on the vertical slide bar 302. The ground knife cabinet 301 is connected to a rotating shaft 306 through a bearing, and a connecting rod 307 and a grounding knife 311 are fixed on the rotating shaft 306. The connecting rod 307 and the grounding knife 311 are in a straight line, and a locking rod 308 is fixed at the end of the connecting rod 307. The grounding terminal 310 is insulated and fixed at the upper end of the grounding knife 311 of the ground knife cabinet 301. The grounding terminal 310 is connected to the outgoing end of the busbar group 109, and the outgoing end of the busbar group 109 is connected to the load terminal 309.

[0026] The transmission mechanism 2 includes a motor base 202, which is fixed on the floor knife cabinet 301. The motor 201 is fixed on the motor base 202. The output end of the motor 201 is connected to the power shaft 203 through a coupling. The power shaft 203 is connected to the floor knife cabinet 301 through a bearing. The other end of the power shaft 203 is equipped with a clamping ring 204, and the clamping ring 204 is provided with an operating hole 205. The power shaft 203 is keyed to a gear 206, and the gear 206 is engaged with the horizontal tooth 106 and the vertical sliding tooth 304 through gears.

[0027] The self-locking door mechanism 4 includes a floor cabinet door 401 , which is connected to the floor knife cabinet 301 via a hinge. A movable bolt 403 is fixed on the inner side of the floor cabinet door 401 , and a fixed bolt 402 is fixed on the inner side of the floor knife cabinet 301 corresponding to the movable bolt 403 .

[0028] The fixed bolt 402 and the movable bolt 403 are in a straight line when the floor cabinet door 401 is closed. The fixed bolt 402 and the movable bolt 403 are in an L-shape with an opening at the upper end.

[0029] The inner width of the vertical sliding teeth 304 is greater than the outer width of the horizontal teeth 106 .

[0030] The workbench 107 , the insulating plate 305 , the connecting rod 307 and the locking rod 308 are all made of insulating materials.

[0031] The anti-misoperation device of the high-voltage cabinet is described. When it is used and the switch needs to be closed and the power needs to be supplied, the staff only needs to remotely operate to start the motor 201, and the motor 201 drives the gear 206 to rotate. The gear 206 simultaneously drives the horizontal slider 105 to move inward and the vertical slider 302 to move downward through the gear. The insulating plate 305 moves downward, removing the insulation barrier. At the same time, the lower edge of the insulating plate 305 touches the grounding knife 311, causing the grounding knife 311 to rotate downward with the rotating shaft 306 as the center, separating from the grounding terminal 310. , the grounding is disconnected, the gear 206 continues to rotate, driving the workbench 107 and the circuit breaker 108 to continue to move toward the busbar group 109 until they are combined with the busbar group 109, completing the closing and power transmission. At this time, the connecting rod 307 and the locking rod 308 are tilted by the grounding knife 311, and the lock outside the floor cabinet door 401 can be opened to open the floor cabinet door 401 for maintenance. When the circuit breaker 108 needs to be disconnected, it is only necessary to remotely control the motor 201 to reverse, and the motor 201 drives the gear 206 to reverse through the power shaft 203, and the gear 2 06 At the same time, the vertical slider 302 is driven upward and the horizontal slider 105 is moved outward. The outward movement of the horizontal slider 105 drives the workbench 107 and the circuit breaker 108 to move outward and separate from the busbar assembly 109. The insulating plate 305 moves up to a certain height and separates from the grounding knife 311. Under the action of the gravity of the connecting rod 307 and the locking rod 308, the grounding knife 311 is tilted and combined with the grounding terminal 310 to complete the grounding. The insulating plate 305 continues to move upward to block the circuit breaker 108 and the busbar assembly 109, further preventing the circuit breaker from being broken by accidental operation. The circuit breaker 108 and the busbar assembly 109 are combined. At this time, the grounding knife 311 and the grounding terminal 310 are merged to complete the grounding. The circuit breaker 108 is stuck at the bottom end position on the fixed bolt 402 and the movable bolt 403. Even if the external lock of the floor cabinet door 401 is opened, the floor cabinet door 401 cannot be opened to prevent maintenance personnel from entering by mistake. Using a tool to tighten the operating hole 205 can lock the power shaft 203, so that the gear 206 is in a fixed position and does not move or misalign. A rocker can be equipped on the rocker hole 103 for manual operation.

[0032] The parts of the present invention that are not described in detail are prior art. Although the present invention is specifically demonstrated and introduced in conjunction with the preferred embodiments, there are many methods and approaches to implement the technical solution. The above is only a preferred embodiment of the present invention. However, those skilled in the art should understand that various changes can be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, and all of these are within the scope of protection of the present invention.

Claims

1. A device for preventing misoperation of a high-voltage cabinet, comprising a circuit breaker mechanism (1), a grounding mechanism (3) being fixed at the lower end of the circuit breaker mechanism (1), a self-locking door mechanism (4) being installed on the grounding mechanism (3), and a transmission mechanism (2) being provided on the grounding mechanism (3), wherein: Preventing misoperation of the circuit breaker mechanism (1), the grounding mechanism (3) and the self-locking door mechanism (4) through gear linkage; The circuit breaker mechanism (1) comprises a main cabinet (101), a horizontal slide bar (105) being slidably connected to the main cabinet (101) via a horizontal slide member (104), a horizontal tooth (106) being fixed to the lower end of the horizontal slide bar (105), a workbench (107) being fixed to the upper end of the horizontal slide bar (105), a circuit breaker (108) being fixed to the workbench (107), a busbar assembly (109) being fixed to the main cabinet (101), and a main cabinet door (102) being hingedly connected to the main cabinet (101); The grounding mechanism (3) comprises a grounding knife cabinet (301), the grounding knife cabinet (301) is slidably connected to a vertical sliding bar (302) via a vertical sliding member (303), a vertical sliding tooth (304) is fixed to the vertical sliding bar (302), an insulating plate (305) is fixed to the vertical sliding bar (302), the grounding knife cabinet (301) is connected to a rotating shaft (306) via a bearing, a connecting rod (307) and a grounding knife (311) are fixed to the rotating shaft (306), the connecting rod (307) and the grounding knife (311) are in a straight line, a locking rod (308) is fixed to the end of the connecting rod (307), a grounding terminal (310) is insulated and fixed at the upper end of the grounding knife (311) of the grounding knife cabinet (301), the grounding terminal (310) is connected to the outgoing end of the busbar group (109), and the outgoing end of the busbar group (109) is connected to the load terminal (309); The transmission mechanism (2) comprises a motor base (202), the motor base (202) being fixed on the floor knife cabinet (301), a motor (201) being fixed on the motor base (202), an output end of the motor (201) being connected to a power shaft (203) via a coupling, the power shaft (203) being connected to the floor knife cabinet (301) via a bearing, a clamping ring (204) being installed at the other end of the power shaft (203), an operating hole (205) being provided on the clamping ring (204), a gear (206) being key-connected on the power shaft (203), the gear (206) being meshed with the horizontal teeth (106) and the vertical sliding teeth (304) via gears; The self-locking door mechanism (4) comprises a floor cabinet door (401), the floor cabinet door (401) being connected to the floor knife cabinet (301) via a hinge, a movable bolt (403) being fixed on the inner side of the floor cabinet door (401), and a fixed bolt (402) being fixed on the inner side of the floor knife cabinet (301) corresponding to the movable bolt (403); The fixed bolt (402) and the movable bolt (403) are in a straight line when the floor cabinet door (401) is closed, and the fixed bolt (402) and the movable bolt (403) are in an L-shape with an opening at the upper end; The width of the inner side of the vertical sliding teeth (304) is greater than the width of the outer side of the horizontal teeth (106).

2. The device for preventing misoperation of a high-voltage cabinet according to claim 1 is characterized in that: The workbench (107), the insulating plate (305), the connecting rod (307) and the locking rod (308) are all made of insulating materials.

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