Mechanical interlocking device for preventing misoperation of ring main units

Abstract

This utility model discloses a mechanical interlocking device for preventing misoperation of a ring main unit, including a ring main unit body, a circuit breaker switch, a disconnecting switch, a grounding switch, and a cable compartment door lock. The circuit breaker switch, disconnecting switch, grounding switch, and cable compartment door lock are all installed on the front of the ring main unit body. These components control the opening and closing of the circuit breaker, disconnecting switch, grounding switch, and cable compartment door lock within the ring main unit body. This utility model employs a guided approach to assist electrical operators in operating the equipment according to a set sequence. While ensuring the prevention of misoperation, it effectively improves efficiency, reduces the occurrence of incorrect operating sequences, and effectively reduces the risk of damage to the switches. Furthermore, it allows for safe operation without requiring extensive experience from the electrical operators.

Description

Technical Field

[0001] This utility model relates to the field of ring network box technology, and more specifically, to a mechanical interlocking device for preventing misoperation of ring network boxes. Background Technology

[0002] The ring main unit anti-misoperation mechanical interlock device is a safety protection device used to prevent power operators from misoperating. It is mainly used in ring main units (ring main units) to ensure the correctness and safety of the operation sequence.

[0003] Currently, almost all ring main units are equipped with mechanical interlocking mechanisms, which can effectively improve the safety of power operators. However, in actual operation, due to the need for power operators to operate multiple ring main units and their lack of experience, they may still make mistakes. In such cases, the mechanical interlocking mechanism will prevent incorrect operation sequence, which will seriously affect the work efficiency of power operators. Moreover, excessive force during misoperation can damage the mechanical interlocking mechanism and even damage the switch. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a mechanical interlocking device for preventing misoperation of ring network boxes, so as to solve the problems in the background technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution;

[0006] The anti-misoperation mechanical interlocking device for the ring main unit includes a ring main unit body, a circuit breaker switch, a disconnecting switch, a grounding switch, and a cable compartment door lock. The circuit breaker switch, disconnecting switch, grounding switch, and cable compartment door lock are all installed on the front of the ring main unit body. These components control the opening and closing of the circuit breaker, disconnecting switch, grounding switch, and cable compartment door within the ring main unit body. A fixed plate is installed on the front of the ring main unit body, and a protective cover is rotatably connected to the front of the fixed plate. The circuit breaker switch, disconnecting switch, grounding switch, and cable compartment door lock are all located inside the protective cover. A motor is installed inside the fixed plate, and the motor's output shaft is fixedly connected to the protective cover. An operating hole is provided on the protective cover. A controller is installed on the front of the ring main unit body, and the controller's output terminal is connected to the motor signal.

[0007] As a further description of the above technical solution:

[0008] An insulating pad is fixedly connected to the front of the main body of the ring network box, and a mounting block is fixedly connected to the front of the insulating pad. The controller is mounted on the mounting block.

[0009] As a further description of the above technical solution:

[0010] A sealing plate is fixedly connected to the outside of the mounting block, and the back of the sealing plate is in contact with the protective cover.

[0011] As a further description of the above technical solution:

[0012] A sealing ring is fixedly connected to the front of the main body of the ring mesh box, and the outer side of the sealing ring is rotatably connected to the protective cover.

[0013] As a further description of the above technical solution:

[0014] An insulating box is fixedly connected inside the fixed plate, and the outside of the motor is fixedly connected to the insulating box.

[0015] As a further description of the above technical solution:

[0016] The front of the protective cover is a transparent acrylic sheet, and the operating hole is located on the transparent acrylic sheet.

[0017] Compared with existing technologies, the advantages of this utility model are:

[0018] This solution uses a guided approach to assist power operators in performing operations in a pre-defined sequence. While ensuring error prevention, it effectively improves efficiency, reduces the occurrence of incorrect operation sequences, and minimizes damage to switches. Furthermore, it does not require power operators to have extensive experience, allowing them to perform the work safely. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a perspective view of the circuit breaker during operation according to this utility model;

[0021] Figure 3 This is a schematic diagram showing the position of the sealing ring in this utility model;

[0022] Figure 4 This is a partial sectional view of the central fixing plate of this utility model.

[0023] Explanation of the labels in the diagram:

[0024] 1. Ring main body; 2. Circuit breaker switch; 3. Disconnecting switch; 4. Grounding switch; 5. Cable compartment door lock; 6. Fixing plate; 7. Protective cover; 8. Motor; 9. Operating hole; 10. Controller; 11. Insulating pad; 12. Mounting block; 13. Sealing plate; 14. Sealing ring; 15. Insulating box. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model;

[0026] Please see Figures 1-4 In this utility model, the anti-misoperation mechanical interlocking device for the ring main body includes a ring main body 1, a circuit breaker switch 2, a disconnecting switch 3, a grounding switch 4, and a cable compartment door lock 5. The circuit breaker switch 2, disconnecting switch 3, grounding switch 4, and cable compartment door lock 5 are all installed on the front of the ring main body 1. The circuit breaker switch 2, disconnecting switch 3, grounding switch 4, and cable compartment door lock 5 are used to control the opening and closing of the circuit breaker, disconnector, grounding switch, and cable compartment door of the ring main body 1. A fixing plate 6 is installed on the front of the ring main body 1. A protective cover 7 is rotatably connected to the front of the fixing plate 6. The circuit breaker switch 2, disconnecting switch 3, grounding switch 4, and cable compartment door lock 5 are all located inside the protective cover 7. A motor 8 is installed inside the fixing plate 6. The output shaft of the motor 8 is fixedly connected to the protective cover 7. An operating hole 9 is opened on the protective cover 7. A controller 10 is installed on the front of the ring main body 1. The output end of the controller 10 is connected to the motor 8.

[0027] In this invention, during use, the protective cover 7 effectively protects the circuit breaker switch 2, disconnector switch 3, grounding switch 4, and cable compartment door lock 5, preventing accidental contact by power operators. The controller 10 has two control modes. When power operators need to inspect the inside of the ring main body 1, they trigger the controller 10 to operate the first control mode. At this time, the controller 10 drives the motor 8 to rotate forward, and the protective cover 7 rotates clockwise. After the protective cover 7 rotates, it moves the operating hole 9. The operating hole 9 will first align with the circuit breaker switch 2. At this time, the power operator can insert the handle through the operating hole 9 into the circuit breaker switch 2 and rotate it to disconnect the circuit breaker in the ring main body 1. After the circuit breaker trips, motor 8 will restart, and operating port 9 will align with disconnecting switch 3. At this time, the power operator can insert the handle into disconnecting switch 3 and rotate it to trip the isolator inside the ring main body 1. After tripping, motor 8 will restart, and operating port 9 will move to align with grounding switch 4 and stop. At this time, the power operator can close grounding switch 4 through operating port 9. After grounding switch 4 is closed, motor 8 will start again, and operating port 9 will move to align with cable compartment door lock 5. The power operator can then use the key inserted into cable compartment door lock 5 through operating port 9 to open the ring main body 1, and then perform internal maintenance on the ring main body 1.

[0028] After maintenance, when power needs to be restored, the controller 10 is first triggered to run the second control mode. The controller 10 will start the motor 8 to reverse, and the protective cover 7 will rotate counterclockwise. After the protective cover 7 drives the operating hole 9 to align with the cable compartment door lock 5, the ring main body 1 can be locked with a key. Then, the motor 8 will drive the protective cover 7 to rotate in the opposite direction, and the operating hole 9 will then align with the grounding switch 4. The grounding switch 4 can then be opened through the operating hole 9. After the grounding switch 4 is opened, the motor 8 will start again, and the protective cover 7 will rotate in the opposite direction until the operating hole 9 is aligned with the isolating switch 3. Then the isolating switch 3 can be closed. After the isolating switch 3 is closed, the motor 8 will start again, and the operating hole 9 will move to align with the circuit breaker switch 2. At this time, the circuit breaker switch 2 can be closed, and power can be restored.

[0029] Please see Figure 1 The main body 1 of the ring network box is fixedly connected to an insulating pad 11, and the front of the insulating pad 11 is fixedly connected to an mounting block 12. The controller 10 is mounted on the mounting block 12.

[0030] In this invention, the insulating pad 11 can effectively insulate the controller 10, thereby improving the safety of the device.

[0031] Please see Figures 1-3 The outer side of the mounting block 12 is fixedly connected to a sealing plate 13, and the back of the sealing plate 13 is in contact with the protective cover 7.

[0032] In this invention, when the ring main unit is not required to be operated, the operating hole 9 is located between the circuit breaker switch 2 and the cable compartment door lock 5. The sealing plate 13 can just seal the operating hole 9, thereby achieving the effect of sealing the protective cover 7. At this time, it can effectively prevent dust and rainwater from contaminating all switches, thereby improving the safety of the device.

[0033] Please see Figure 3 Among them, a sealing ring 14 is fixedly connected to the front of the ring mesh box body 1, and the outer side of the sealing ring 14 is rotatably connected to the protective cover 7.

[0034] In this invention, the sealing ring 14 can seal the space between the protective cover 7 and the ring mesh box body 1, effectively preventing dust and rainwater from contaminating all switches, thereby improving the safety of the device.

[0035] Please see Figure 4 The fixed plate 6 has an insulating box 15 fixedly connected inside, and the motor 8 is fixedly connected to the insulating box 15 on the outside.

[0036] In this invention, the insulating box 15 can insulate the motor 8, thereby improving the safety of the device.

[0037] Please see Figure 1 The protective cover 7 has a transparent acrylic sheet on the front, and the operating hole 9 is located on the transparent acrylic sheet.

[0038] In this invention, the front of the protective cover 7 is a transparent acrylic plate, which makes it easy for users to observe the status of different switches, thereby improving the practicality of the device.

[0039] The above are merely preferred embodiments of this utility model; however, the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and its improved concept, should be included within the scope of protection of this utility model.

Claims

1. A misoperation prevention mechanical interlocking device of a ring main unit, comprising a ring main unit body (1), a circuit breaker switch (2), a disconnector switch (3), a grounding switch (4) and a cable chamber door lock (5), wherein the circuit breaker switch (2), the disconnector switch (3), the grounding switch (4) and the cable chamber door lock (5) are installed on the front face of the ring main unit body (1), and the circuit breaker switch (2), the disconnector switch (3), the grounding switch (4) and the cable chamber door lock (5) are used for controlling the opening and closing of the circuit breaker, the isolator, the ground device and the cable chamber door in the ring main unit body (1), characterized in that: A fixed plate (6) is installed on the front of the main body (1) of the ring network box. A protective cover (7) is rotatably connected to the front of the fixed plate (6). The circuit breaker switch (2), disconnector switch (3), grounding switch (4) and cable room door lock (5) are all located inside the protective cover (7). A motor (8) is installed inside the fixed plate (6). The output shaft of the motor (8) is fixedly connected to the protective cover (7). An operating hole (9) is opened on the protective cover (7). A controller (10) is installed on the front of the main body (1) of the ring network box. The output end of the controller (10) is connected to the motor (8) via signal. ​ 2. The anti-misoperation mechanical interlocking device of the ring main unit according to claim 1, characterized in that: An insulating pad (11) is fixedly connected to the front of the main body (1) of the ring network box, and an mounting block (12) is fixedly connected to the front of the insulating pad (11). The controller (10) is mounted on the mounting block (12).

3. The anti-misoperation mechanical interlocking device of the ring main unit according to claim 2, characterized in that: A sealing plate (13) is fixedly connected to the outside of the mounting block (12), and the back of the sealing plate (13) is in contact with the protective cover (7).

4. The anti-misoperation mechanical interlocking device of the ring main unit according to claim 1, characterized in that: A sealing ring (14) is fixedly connected to the front of the main body (1) of the ring mesh box, and the outer side of the sealing ring (14) is rotatably connected to the protective cover (7).

5. The anti-misoperation mechanical interlocking device of the ring main unit according to claim 1, characterized in that: An insulating box (15) is fixedly connected inside the fixed plate (6), and the outside of the motor (8) is fixedly connected to the insulating box (15).

6. The anti-misoperation mechanical interlocking device of the ring main unit according to claim 1, characterized in that: The front of the protective cover (7) is a transparent acrylic plate, and the operating hole (9) is located on the transparent acrylic plate.

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