Voltage transformer cabinet with door closing maintenance function

Abstract

The utility model discloses a voltage transformer cabinet with a door closing maintenance function, which relates to the technical field of power grid systems and comprises a cabinet body and a threading groove arranged on the cabinet body, the cabinet body comprises a voltage transformer cabinet and a wire inlet cabinet, the voltage transformer cabinet comprises an upper-layer voltage transformer cabinet and a lower-layer voltage transformer cabinet, and the upper-layer voltage transformer cabinet and the lower-layer voltage transformer cabinet are arranged on the upper-layer voltage transformer cabinet and the lower-layer voltage transformer cabinet respectively. The upper-layer voltage transformer cabinet and the lower-layer voltage transformer cabinet are connected with the wire inlet cabinet through wall bushings, moving guide rails are arranged in the upper-layer voltage transformer cabinet and the lower-layer voltage transformer cabinet, and voltage transformers and first post insulators are arranged on the moving guide rails. The top of the wire inlet cabinet is provided with a second post insulator. Safety risk isolation is carried out by closing the cabinet door, the electric shock risk is reduced, misoperation protection is achieved through five-prevention locking, partial live-line maintenance operation is completed through an observation window, the power failure time is shortened, and the maintenance progress is accelerated.

Description

Technical Field

[0001] This utility model relates to the field of power grid system technology, and in particular to a voltage transformer cabinet with a door-closed maintenance function. Background Technology

[0002] The maintenance of voltage transformer cabinets is a very important part of power system maintenance. Regular maintenance can help identify and resolve potential problems in a timely manner, thereby avoiding larger-scale power outages or equipment damage caused by voltage transformer failures.

[0003] In the existing technology, voltage transformers are connected to other equipment by a fixed hard connection. During maintenance, multiple wiring points need to be disconnected, which may require opening the entire cabinet to complete the operation, thus limiting the convenience of maintenance and lacking the function of closing the door for maintenance.

[0004] First, if the voltage transformer cabinet cannot be closed for maintenance, it means that operators may directly contact live parts during maintenance, increasing the risk of electric shock. Second, the lack of a specially designed maintenance door may require additional tools or steps to access critical components, making it impossible to quickly open and close the cabinet door for inspection or repair, potentially prolonging power outages or maintenance time. Finally, open or semi-open voltage transformer cabinets are more susceptible to external environmental factors such as dust and moisture, and the lack of good sealing may cause internal components to age or be damaged more easily, thereby reducing the reliability and lifespan of the equipment.

[0005] Therefore, a voltage transformer cabinet with a door-closed maintenance function is provided to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a voltage transformer cabinet with a closed-door maintenance function. Through physical isolation, interlocking linkage and environmental control, it significantly improves maintenance safety and system stability, while also taking into account efficiency optimization, so as to meet the core requirements of standardized operation and maintenance of power equipment.

[0007] To achieve the above objectives, this utility model provides a voltage transformer cabinet with a closed-door maintenance function, including a cabinet body and a wiring trough disposed on the cabinet body. The cabinet body includes a voltage transformer cabinet and an incoming line cabinet. The voltage transformer cabinet includes an upper voltage transformer cabinet and a lower voltage transformer cabinet. Both the upper and lower voltage transformer cabinets are connected to the incoming line cabinet through wall bushings. Both the upper and lower voltage transformer cabinets are equipped with movable guide rails inside. Voltage transformers and first post insulators are disposed on the movable guide rails. A second post insulator is disposed on the top of the incoming line cabinet.

[0008] Preferably, both the upper voltage transformer cabinet and the lower voltage transformer cabinet are provided with a switch door on the side away from the incoming line cabinet, and the switch door is provided with a switch and an observation window.

[0009] Preferably, a first high-voltage fuse bracket is provided on the top of the voltage transformer, a second high-voltage fuse bracket is provided on the top of the first post insulator, and a high-voltage fuse is provided between the first high-voltage fuse bracket and the second high-voltage fuse bracket.

[0010] Preferably, each of the two through-wall bushings is provided with a stationary contact conductive rod, which is connected to the through-wall bushing by a nut. A retaining ring is provided between the nut and the through-wall bushing. A moving contact conductive rod is provided between the second high-voltage fuse bracket and the first post insulator. The moving contact conductive rod is fixedly connected to the first post insulator by a first bolt structure. The moving contact conductive rod extends into the through-wall bushing and connects with the stationary contact conductive rod. The other side of the stationary contact conductive rod extends into the incoming line cabinet.

[0011] Preferably, the two stationary contact conductive rods are connected by a first connecting conductor, the first connecting conductor is connected to the second post insulator by a second connecting conductor, a third connecting conductor is provided between the second connecting conductor and the second post insulator, and the stationary contact conductive rods, the first connecting conductor and the second connecting conductor are fixedly connected by a bolt structure.

[0012] Preferably, the voltage transformer and the first post insulator are both fixedly connected to the moving guide rail by hexagonal head bolts, and the moving guide rail is provided with a locking device.

[0013] Preferably, a contact grounding device is provided between the voltage transformer and the first post insulator, and a grounding terminal is provided on the wall of the lower voltage transformer cabinet near the contact grounding device.

[0014] Preferably, the dimensions of the incoming line cabinet are set to 100cm×120cm×200cm, and the dimensions of the upper voltage transformer cabinet and the lower voltage transformer cabinet are both set to 155cm×120cm×100cm.

[0015] Therefore, the voltage transformer cabinet with closed-door maintenance function using the above-described structure of this utility model has the following beneficial effects:

[0016] (1) This solution can isolate safety risks. Closing the cabinet door can physically isolate the high-voltage equipment from the external environment, prevent maintenance personnel from accidentally touching live parts, and reduce the risk of electric shock. After the cabinet door is sealed, the internal valve mechanism remains locked to prevent the valve from being accidentally opened during maintenance, which could lead to high voltage exposure.

[0017] (2) This solution can protect against misoperation. When the cabinet door is closed, the five-proof interlocking function can be forcibly activated, reducing the possibility of accidents caused by human misoperation. The mechanical interlocking device restricts the position of the handcart switch, ensuring that the equipment cannot be accidentally pushed to the working position when it is under maintenance.

[0018] (3) This solution can protect the equipment and the environment. The cabinet door can block dust, moisture and other substances from entering the cabinet, and protect the contacts, insulators and other precision components from pollution or condensation.

[0019] (4) This solution has high maintenance efficiency. In some live maintenance scenarios, the operation can be completed with the help of observation windows or special tools, without the need to frequently open cabinet doors, thus shortening the power outage time. The standardized interlocking process reduces the repeated verification of safety measures and speeds up the maintenance progress.

[0020] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0021] Figure 1 This is a structural diagram of a voltage transformer cabinet with a door-closed maintenance function according to this utility model.

[0022] Figure 2 This is a top view of a voltage transformer cabinet with a closed-door maintenance function according to this utility model.

[0023] Figure 3 This is a left view of a voltage transformer cabinet with a closed-door maintenance function according to this utility model.

[0024] Figure 4 This is a right view of a voltage transformer cabinet with a closed-door maintenance function according to this utility model.

[0025] Figure 5 This is a maintenance status diagram of a voltage transformer cabinet with a closed-door maintenance function according to this utility model.

[0026] The components include: 1. Cabinet; 101. Upper voltage transformer cabinet; 102. Lower voltage transformer cabinet; 103. Incoming line cabinet; 2. Switch door; 3. Switch; 4. Voltage transformer; 5. First post insulator; 6. First high-voltage fuse bracket; 7. Second high-voltage fuse bracket; 8. High-voltage fuse; 9. First bolt structure; 10. Hexagonal head bolt; 11. Cable tray; 12. Through-wall bushing; 13. Moving contact conductive rod; 14. Stationary contact conductive rod; 15. Second bolt structure; 16. First connecting conductor; 17. Second connecting conductor; 18. Second post insulator; 19. Third connecting conductor; 20. Nut; 21. Retaining ring; 22. Contact grounding device; 23. Grounding terminal; 24. Locking device; 25. Observation window; 26. Moving guide rail. Detailed Implementation

[0027] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0028] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship will also change accordingly.

[0029] Example

[0030] like Figure 1-5 As shown, this utility model provides a voltage transformer cabinet with a closed-door maintenance function, including a cabinet body 1 and a wiring trough 11 disposed on the cabinet body 1. The cabinet body 1 includes a voltage transformer cabinet and an incoming line cabinet 103. The voltage transformer cabinet includes an upper voltage transformer cabinet 101 and a lower voltage transformer cabinet 102. The dimensions of the incoming line cabinet 103 are set to 100cm×120cm×200cm. The dimensions of the upper voltage transformer cabinet 101 and the lower voltage transformer cabinet 102 are both set to 155cm×120cm×100cm.

[0031] Both the upper voltage transformer cabinet 101 and the lower voltage transformer cabinet 102 are equipped with a switch door 2 on the side away from the incoming line cabinet 103. The switch door 2 is equipped with a switch 3 and an observation window 25.

[0032] Both the upper voltage transformer cabinet 101 and the lower voltage transformer cabinet 102 are connected to the incoming line cabinet 103 through wall bushings 12. Each of the two wall bushings 12 is equipped with a stationary contact conductive rod 14. The stationary contact conductive rod 14 is connected to the wall bushing 12 through a nut 20. A retaining ring 21 is provided between the nut 20 and the wall bushing 12.

[0033] Both the upper voltage transformer cabinet 101 and the lower voltage transformer cabinet 102 are equipped with movable guide rails 26. Voltage transformers 4 and first post insulators 5 are installed on the movable guide rails 26. The top of the incoming line cabinet 103 is equipped with a second post insulator 18. The top of the voltage transformer 4 is equipped with a first high-voltage fuse bracket 6. The top of the first post insulator 5 is equipped with a second high-voltage fuse bracket 7. A high-voltage fuse 8 is installed between the first high-voltage fuse bracket 6 and the second high-voltage fuse bracket 7.

[0034] A moving contact conductive rod 13 is provided between the second high-voltage fuse bracket 7 and the first post insulator 5. The moving contact conductive rod 13 is fixedly connected to the first post insulator 5 by the first bolt structure 9. The moving contact conductive rod 13 extends into the wall bushing 12 and connects with the stationary contact conductive rod 14. The other side of the stationary contact conductive rod 14 extends into the incoming line cabinet 103.

[0035] The two stationary contact conductive rods 14 are connected by a first connecting conductor 16. The first connecting conductor 16 is connected to the second post insulator 18 through a second connecting conductor 17. A third connecting conductor 19 is provided between the second connecting conductor 17 and the second post insulator 18. The stationary contact conductive rods 14, the first connecting conductor 16 and the second connecting conductor 17 are fixedly connected by a second bolt structure 15.

[0036] A contact grounding device 22 is provided between the voltage transformer 4 and the first post insulator 5, and a grounding terminal 23 is provided on the wall of the lower voltage transformer cabinet 102 near the contact grounding device 22.

[0037] The voltage transformer 4 and the first post insulator 5 are both fixedly connected to the moving guide rail 26 by hexagonal head bolts 10. The moving guide rail 26 is equipped with a locking device 24. When the switchgear is under maintenance, the moving contact conductive rod 13 is disconnected from the stationary contact conductive rod 14, and the voltage transformer 4 and the first post insulator 5 are moved by the moving guide rail 26. When they are moved to the appropriate position, the locking device 24 locks the moving guide rail 26 to ensure the stability of the equipment during maintenance.

[0038] Therefore, this utility model adopts the above-mentioned structure of a voltage transformer cabinet with a door-closing maintenance function. By closing the cabinet door, safety risks are isolated, high-voltage equipment is physically isolated from the external environment, reducing the risk of electric shock. At the same time, it prevents dust, moisture and other substances from entering the cabinet, protecting precision components from contamination or condensation. The five-proof interlocking function provides protection against misoperation, reducing the possibility of accidents caused by human error. Some live maintenance operations can be completed through the observation window or special tools, shortening power outage time and speeding up the maintenance progress.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A voltage transformer cabinet with a door maintenance function, characterized in that, The application relates to a cabinet body and a threading groove arranged on the cabinet body, wherein the cabinet body comprises a voltage transformer cabinet and an incoming line cabinet, the voltage transformer cabinet comprises an upper voltage transformer cabinet and a lower voltage transformer cabinet, the upper voltage transformer cabinet and the lower voltage transformer cabinet are connected with the incoming line cabinet through wall bushings, the upper voltage transformer cabinet and the lower voltage transformer cabinet are internally provided with mobile guide rails, the mobile guide rails are provided with voltage transformers and first post insulators, and the incoming line cabinet is provided with second post insulators on the top.

2. The voltage transformer cabinet with door closing and maintenance functions according to claim 1, characterized in that, The upper voltage transformer cabinet and the lower voltage transformer cabinet are provided with switch doors away from the side of the incoming line cabinet, the switch doors are provided with switches and observation windows.

3. The voltage transformer cabinet with door closing and maintenance functions according to claim 1, characterized in that, The voltage transformers are provided with first high-voltage fuse supports on the top, the first post insulators are provided with second high-voltage fuse supports on the top, and high-voltage fuses are arranged between the first high-voltage fuse supports and the second high-voltage fuse supports.

4. The voltage transformer cabinet with door maintenance function according to claim 3, characterized in that, The wall bushings are internally provided with static contact conductive rods, the static contact conductive rods are connected with the wall bushings through nuts, the nuts are provided with retaining rings between the wall bushings, the second high-voltage fuse supports are provided with movable contact conductive rods between the first post insulators, the movable contact conductive rods are fixedly connected with the first post insulators through first bolt structures, the movable contact conductive rods are connected with the static contact conductive rods by extending into the wall bushings, and the other sides of the static contact conductive rods extend into the incoming line cabinet.

5. The voltage transformer cabinet with door maintenance function according to claim 4, characterized in that, The static contact conductive rods are connected through first connecting conductors, the first connecting conductors are connected with the second post insulators through second connecting conductors, the second connecting conductors are provided with third connecting conductors between the second post insulators, and the static contact conductive rods, the first connecting conductors and the second connecting conductors are fixedly connected through bolt structures.

6. The voltage transformer cabinet with door closing and maintenance function according to claim 1, characterized in that, The voltage transformers and the first post insulators are fixedly connected with the mobile guide rails through hexagonal head bolts, and the mobile guide rails are provided with locking locks.

7. The voltage transformer cabinet with door maintenance function according to claim 1, characterized in that, The voltage transformers and the first post insulators are provided with contact grounding devices, and the wall bodies of the lower voltage transformer cabinets close to the contact grounding devices are provided with grounding terminals.

8. The voltage transformer cabinet with door maintenance function according to claim 1, characterized in that, The size of the incoming line cabinet is 100cm*120cm*200cm, and the sizes of the upper voltage transformer cabinet and the lower voltage transformer cabinet are all 155cm*120cm*100cm.

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