Modularized structure ring main unit capable of conveniently replacing air chamber

Abstract

The utility model discloses a modular structure ring main unit capable of conveniently replacing an air chamber, which relates to the technical field of ring main units and comprises a mechanism box body, a cable chamber body, an ejection sleeve and an air box body, and the air box body is detachably mounted with the mechanism box body and the cable chamber body through connecting assemblies. The circuit breaker mechanism is provided with a circuit breaker dynamic seal interface sleeve, the isolation mechanism body is provided with an isolation dynamic seal interface sleeve, one end of the circuit breaker main shaft is provided with a circuit breaker dynamic seal, the circuit breaker dynamic seal is connected with the circuit breaker dynamic seal interface sleeve, one end of the isolation main shaft is provided with an isolation dynamic seal, and the isolation dynamic seal is connected with the isolation dynamic seal interface sleeve; according to the utility model, the damaged gas tank body can be quickly replaced, the gas tank body is simple to disassemble and operate, less working hours are occupied, other mechanisms of the modular structure looped network are not influenced, undamaged parts can be continuously applied, and the mounting and disassembling cost is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of ring main unit technology, and in particular to a modular structure ring main unit with easily replaceable air chambers. Background Technology

[0002] To meet the need for interchangeable use of equipment from different manufacturers within a certain scope and period, and to improve the ease of operation and maintenance of ring main units (RNBs), the State Grid Corporation of China revised the "Standardized Design Scheme for 10 kV RNBs (Boxes)" in 2023. Under this framework, RNB equipment from various manufacturers has achieved uniform installation dimensions, busbar specifications, analog lines, and appearance, allowing for complete cabinet replacement. However, when a fault occurs inside the gas chamber of a cabinet, even if other components are functioning correctly, the entire cabinet still needs to be replaced, resulting in some waste and significant difficulty in replacement, hindering quick and convenient solutions. Therefore, this utility model proposes a modular RNB structure with easily replaceable gas chambers to address the shortcomings of existing technologies. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this utility model is to provide a modular ring main unit with easily replaceable air chambers. This allows for the rapid replacement of damaged air chamber bodies. By disassembling the connecting components, the air chamber body can be separated from the mechanism housing and cable compartment body. Then, the faulty air chamber body can be replaced by sliding it out. The disassembly operation of the air chamber body in this utility model is simple and requires very little labor time. The other mechanisms of the modular ring main unit are not affected, and undamaged parts can continue to be used, greatly reducing the cost of installation and disassembly.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A modular ring main unit with easily replaceable gas chambers includes a mechanism box body, a cable compartment body, an ejector sleeve, and a gas box body. The mechanism box body is located on one side of the top of the cable compartment body, and the gas box body is located on the top of the cable compartment body on one side of the mechanism box body. An ejector sleeve is located on the top of the gas box body. The gas box body is detachably installed and detachably connected to the mechanism box body and the cable compartment body via connecting components. A connecting column is provided between the cable compartment body and the gas box body. A circuit breaker body and a disconnecting switch body are located inside the gas box body. The mechanism box body contains... The device includes a circuit breaker mechanism and an isolating mechanism body. The circuit breaker mechanism is equipped with a circuit breaker dynamic sealing interface sleeve, and the isolating mechanism body is equipped with an isolating dynamic sealing interface sleeve. The circuit breaker dynamic sealing interface sleeve is adapted to the position of the circuit breaker main shaft of the circuit breaker body, and the isolating dynamic sealing interface sleeve is adapted to the position of the isolating main shaft of the isolating switch body. One end of the circuit breaker main shaft is equipped with a circuit breaker dynamic seal, which is connected to the circuit breaker dynamic sealing interface sleeve. One end of the isolating main shaft is equipped with an isolating dynamic seal, which is connected to the isolating dynamic sealing interface sleeve.

[0006] A further improvement is that: the top of the gas box body is provided with a busbar sealing cover, the ejector sleeve is located inside the busbar sealing cover, and the ejector sleeve is provided with an ejector connecting busbar.

[0007] A further improvement is that: the connecting column is provided in multiple sets, the circuit breaker dynamic seal and the circuit breaker dynamic seal interface sleeve are located between two adjacent sets of connecting columns, and the isolation dynamic seal and the isolation dynamic seal interface sleeve are located between two adjacent sets of connecting columns.

[0008] A further improvement is that: the bottom of the mechanism box body is provided with mounting bolts, and there are multiple sets of mounting bolts. The mechanism box body is connected to the top of the cable compartment body through multiple sets of mounting bolts.

[0009] A further improvement is that the connecting assembly includes a mechanism box fixing bolt group, a cable chamber front fixing bolt group, and a cable chamber bottom fixing bolt group. The air box body is connected to the mechanism box body through the mechanism box fixing bolt group, and the air box body is installed to the cable chamber body through the cable chamber front fixing bolt group and the cable chamber bottom fixing bolt group.

[0010] A further improvement is that the ends of the circuit breaker dynamic seal and the isolation dynamic seal are both cylindrical structures, and the inner holes of the circuit breaker dynamic seal interface sleeve and the isolation dynamic seal interface sleeve are hexagonal hole structures.

[0011] A further improvement is that a first switch position adjusting dynamic seal is provided on one side of the gas box body. The first switch position adjusting dynamic seal is adapted to the position of the circuit breaker main shaft and is connected to the circuit breaker main shaft.

[0012] A further improvement is that a second switch position adjusting dynamic seal is provided on one side of the air box body. The second switch position adjusting dynamic seal is adapted to the position of the isolation spindle and is connected to the isolation spindle.

[0013] A further improvement is that the ends of both the circuit breaker dynamic seal and the isolation dynamic seal are chamfered, and the end length of the isolation dynamic seal is greater than the end length of the circuit breaker dynamic seal.

[0014] The beneficial effects of this utility model are as follows: The modular structure ring main unit of this utility model can quickly replace the damaged gas box body. By disassembling the connecting components, the gas box body can be separated from the mechanism box body and the cable chamber body. Then, the gas box body can be moved out to replace the faulty gas box body. The disassembly operation of the gas box body of this utility model is simple and takes very little time. The other mechanisms of the modular structure ring network are not affected, and the undamaged parts can continue to be used, which greatly reduces the cost of installation and disassembly. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the installation structure of the circuit breaker dynamic seal and the circuit breaker dynamic seal interface sleeve of this utility model;

[0017] Figure 3 This is a schematic diagram of the installation structure of the dynamic seal and the isolation dynamic seal interface sleeve of this utility model;

[0018] Figure 4 This is a three-dimensional schematic diagram of the installation structure of the front fixing bolt group and the lower fixing bolt group of the cable chamber of this utility model.

[0019] The components are as follows: 1. Mechanism box body; 2. Cable compartment body; 3. Ejection sleeve; 4. Gas box body; 5. Connecting column; 6. Circuit breaker body; 7. Disconnecting switch body; 8. Circuit breaker mechanism; 9. Isolation mechanism body; 10. Circuit breaker dynamic seal interface sleeve; 11. Isolation dynamic seal interface sleeve; 12. Connecting assembly; 13. Circuit breaker main shaft; 14. Isolation main shaft; 15. Circuit breaker dynamic seal; 16. Isolation dynamic seal; 17. Busbar sealing cover; 18. Ejection connecting busbar; 19. Mounting bolts; 20. Mechanism box fixing bolt group; 21. Cable compartment front fixing bolt group; 22. Cable compartment lower fixing bolt group; 23. First switch position adjustment dynamic seal; 24. Second switch position adjustment dynamic seal. Detailed Implementation

[0020] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0021] Example 1

[0022] according to Figure 1 , 4 As shown, this embodiment proposes a modular ring main unit with easily replaceable gas chambers, including a mechanism box body 1, a cable compartment body 2, an ejector sleeve 3, and a gas box body 4. The mechanism box body 1 is located on one side of the top of the cable compartment body 2, and the gas box body 4 is located on the top of the cable compartment body 2 on one side of the mechanism box body 1. The ejector sleeve 3 is located on the top of the gas box body 4. The gas box body 4 is detachably installed and detachably connected to the mechanism box body 1 and the cable compartment body 2 via a connecting assembly 12. A connecting post 5 is provided between the cable compartment body 2 and the gas box body 4. A circuit breaker body 6 and a disconnecting switch body 7 are located inside the gas box body 4. The mechanism box body 1 contains... The circuit breaker mechanism 8 and the isolating mechanism body 9 are provided. The circuit breaker mechanism 8 is provided with a circuit breaker dynamic sealing interface sleeve 10, and the isolating mechanism body 9 is provided with an isolating dynamic sealing interface sleeve 11. The circuit breaker dynamic sealing interface sleeve 10 is adapted to the position of the circuit breaker main shaft 13 of the circuit breaker body 6, and the isolating dynamic sealing interface sleeve 11 is adapted to the position of the isolating main shaft 14 of the isolating switch body 7. One end of the circuit breaker main shaft 13 is provided with a circuit breaker dynamic seal 15, which is connected to the circuit breaker dynamic sealing interface sleeve 10. One end of the isolating main shaft 14 is provided with an isolating dynamic seal 16, which is connected to the isolating dynamic sealing interface sleeve 11.

[0023] When removing the faulty air box body 4 of the modular structure ring main unit of this utility model that allows for easy replacement of air chambers, first remove the busbar sealing cover 17, then disconnect the connection of the top-out connecting busbar 18, and then remove the connecting component 12 to separate the mechanism box body 1 from the air box body 4 and to separate the air box body 4 from the cable chamber body 2, so that the air box body 4 can be moved out from the rear and the faulty air box body 4 can be replaced.

[0024] When installing the new air box body 4, push the new air box body 4 horizontally into the space of the replaced faulty air box body 4, so that the shaft heads of the circuit breaker dynamic seal 15 and the isolation dynamic seal 16 are inserted into the holes of the circuit breaker dynamic seal interface sleeve 10 and the isolation dynamic seal interface sleeve 11. After aligning the positions, tighten the connecting assembly 12. The air box body 4 is now installed. Then fix the ejected connecting busbar 18 and finally install the busbar sealing cover 17. The faulty air box body 4 is now replaced.

[0025] The top of the gas box body 4 is provided with a busbar sealing cover 17, the ejector sleeve 3 is located inside the busbar sealing cover 17, and the ejector sleeve 3 is provided with an ejector connecting busbar 18.

[0026] The connecting post 5 is provided in multiple sets. The circuit breaker dynamic seal 15 and the circuit breaker dynamic seal interface sleeve 10 are located between two adjacent sets of connecting posts 5. The isolation dynamic seal 16 and the isolation dynamic seal interface sleeve 11 are located between two adjacent sets of connecting posts 5.

[0027] The bottom of the mechanism box body 1 is provided with mounting bolts 19, and there are multiple sets of mounting bolts 19. The mechanism box body 1 is connected to the top of the cable compartment body 2 through multiple sets of mounting bolts 19.

[0028] The connecting assembly 12 includes a mechanism box fixing bolt group 20, a cable chamber front fixing bolt group 21, and a cable chamber lower fixing bolt group 22. The air box body 4 is connected to the mechanism box body 1 through the mechanism box fixing bolt group 20, and the air box body 4 is installed to the cable chamber body 2 through the cable chamber front fixing bolt group 21 and the cable chamber lower fixing bolt group 22.

[0029] Example 2

[0030] according to Figure 1-4 As shown, this embodiment proposes a modular ring main unit with easily replaceable gas chambers, including a mechanism box body 1, a cable compartment body 2, an ejector sleeve 3, and a gas box body 4. The mechanism box body 1 is located on one side of the top of the cable compartment body 2, and the gas box body 4 is located on the top of the cable compartment body 2 on one side of the mechanism box body 1. The ejector sleeve 3 is located on the top of the gas box body 4. The gas box body 4 is detachably installed and detachably connected to the mechanism box body 1 and the cable compartment body 2 via a connecting assembly 12. A connecting post 5 is provided between the cable compartment body 2 and the gas box body 4. A circuit breaker body 6 and a disconnecting switch body 7 are located inside the gas box body 4. The mechanism box body 1 contains... The circuit breaker mechanism 8 and the isolating mechanism body 9 are provided. The circuit breaker mechanism 8 is provided with a circuit breaker dynamic sealing interface sleeve 10, and the isolating mechanism body 9 is provided with an isolating dynamic sealing interface sleeve 11. The circuit breaker dynamic sealing interface sleeve 10 is adapted to the position of the circuit breaker main shaft 13 of the circuit breaker body 6, and the isolating dynamic sealing interface sleeve 11 is adapted to the position of the isolating main shaft 14 of the isolating switch body 7. One end of the circuit breaker main shaft 13 is provided with a circuit breaker dynamic seal 15, which is connected to the circuit breaker dynamic sealing interface sleeve 10. One end of the isolating main shaft 14 is provided with an isolating dynamic seal 16, which is connected to the isolating dynamic sealing interface sleeve 11.

[0031] The ends of both the circuit breaker dynamic seal 15 and the isolation dynamic seal 16 are cylindrical structures, and the inner holes of the circuit breaker dynamic seal interface sleeve 10 and the isolation dynamic seal interface sleeve 11 are hexagonal holes. A first switch position adjusting dynamic seal 23 is provided on one side of the gas box body 4. The first switch position adjusting dynamic seal 23 is adapted to the position of the circuit breaker main shaft 13 and is connected to the circuit breaker main shaft 13. A second switch position adjusting dynamic seal 24 is provided on one side of the gas box body 4. The second switch position adjusting dynamic seal 24 is adapted to the position of the isolation main shaft 14 and is connected to the isolation main shaft 14. The ends of both the circuit breaker dynamic seal 15 and the isolation dynamic seal 16 are chamfered structures, and the end length of the isolation dynamic seal 16 is greater than the end length of the circuit breaker dynamic seal 15. Because the ends of the circuit breaker dynamic seal 15 and the isolating dynamic seal 16 are cylindrical, and the inner holes of the circuit breaker dynamic seal interface sleeve 10 and the isolating dynamic seal interface sleeve 11 are hexagonal, it is not easy to align and insert them at once. Therefore, by setting the first switch position adjusting dynamic seal 23 and the second switch position adjusting dynamic seal 24, the circuit breaker dynamic seal 15 and the isolating dynamic seal 16 can be rotated separately, so that the ends of the circuit breaker dynamic seal 15 and the isolating dynamic seal 16 can be adapted to the circuit breaker dynamic seal interface sleeve 10 and the isolating dynamic seal interface sleeve 11, and aligned insertion and installation can be achieved. Furthermore, by setting the ends of the circuit breaker dynamic seal 15 and the isolating dynamic seal 16 to be chamfered, the accuracy of inserting the circuit breaker dynamic seal 15 and the isolating dynamic seal 16 into the circuit breaker dynamic seal interface sleeve 10 and the isolating dynamic seal interface sleeve 11 can be further improved. The design of the isolation dynamic seal 16 having a longer end than the circuit breaker dynamic seal 15 allows for the connection of the isolation dynamic seal 16 and the isolation dynamic seal interface sleeve 11 first, and then the connection of the circuit breaker dynamic seal 15 and the circuit breaker dynamic seal interface sleeve 10. This avoids the difficulty of simultaneous connection operations and effectively improves the replacement speed of the gas box body 4.

[0032] The modular ring main unit of this utility model can quickly replace the damaged gas box body 4. By disassembling the connecting component 12, the gas box body 4 can be separated from the mechanism box body 1 and the cable chamber body 2. Then, the gas box body 4 can be moved out to replace the faulty gas box body 4. The disassembly operation of the gas box body 4 of this utility model is simple and takes very little time. The other mechanisms of the modular ring main unit are not affected, and the undamaged parts can continue to be used, which greatly reduces the cost of installation and disassembly.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A modular ring main unit with easily replaceable air chambers, characterized in that: The system includes a mechanism box body (1), a cable compartment body (2), an ejector sleeve (3), and an air box body (4). The mechanism box body (1) is located on one side of the top of the cable compartment body (2). The air box body (4) is located on the top of the cable compartment body (2) on one side of the mechanism box body (1). The ejector sleeve (3) is located on the top of the air box body (4). The air box body (4) is detachably installed with the mechanism box body (1) and the cable compartment body (2) via a connecting assembly (12). A connecting column (5) is provided between the cable compartment body (2) and the air box body (4). The air box body (4) contains a circuit breaker body (6) and a disconnector switch body (7). The mechanism box body (1) contains a circuit breaker mechanism (8) and a disconnector switch body (7). The mechanism body (9) is provided with a circuit breaker dynamic sealing interface sleeve (10) on the circuit breaker mechanism (8) and an isolation dynamic sealing interface sleeve (11) on the isolation mechanism body (9). The circuit breaker dynamic sealing interface sleeve (10) is adapted to the position of the circuit breaker main shaft (13) of the circuit breaker body (6). The isolation dynamic sealing interface sleeve (11) is adapted to the position of the isolation main shaft (14) of the disconnecting switch body (7). One end of the circuit breaker main shaft (13) is provided with a circuit breaker dynamic seal (15), which is connected to the circuit breaker dynamic sealing interface sleeve (10). One end of the isolation main shaft (14) is provided with an isolation dynamic seal (16), which is connected to the isolation dynamic sealing interface sleeve (11).

2. The modular ring main unit with easily replaceable air chambers according to claim 1, characterized in that: The top of the gas box body (4) is provided with a busbar sealing cover (17), the ejector sleeve (3) is located inside the busbar sealing cover (17), and the ejector sleeve (3) is provided with an ejector connecting busbar (18).

3. A modular ring main unit with easily replaceable air chambers as described in claim 1, characterized in that: The connecting column (5) is provided in multiple sets. The circuit breaker dynamic seal (15) and the circuit breaker dynamic seal interface sleeve (10) are located between two adjacent sets of connecting columns (5). The isolation dynamic seal (16) and the isolation dynamic seal interface sleeve (11) are located between two adjacent sets of connecting columns (5).

4. A modular ring main unit with easily replaceable air chambers as described in claim 1, characterized in that: The bottom of the mechanism box body (1) is provided with mounting bolts (19), and there are multiple sets of mounting bolts (19). The mechanism box body (1) is connected to the top of the cable room body (2) through multiple sets of mounting bolts (19).

5. A modular ring main unit with easily replaceable air chambers according to claim 1, characterized in that: The connecting assembly (12) includes a mechanism box fixing bolt group (20), a cable chamber front fixing bolt group (21), and a cable chamber lower fixing bolt group (22). The air box body (4) is connected to the mechanism box body (1) through the mechanism box fixing bolt group (20), and the air box body (4) is installed to the cable chamber body (2) through the cable chamber front fixing bolt group (21) and the cable chamber lower fixing bolt group (22).

6. A modular ring main unit with easily replaceable air chambers as described in claim 1, characterized in that: The ends of the circuit breaker dynamic seal (15) and the isolation dynamic seal (16) are both cylindrical structures, and the inner holes of the circuit breaker dynamic seal interface sleeve (10) and the isolation dynamic seal interface sleeve (11) are hexagonal hole structures.

7. A modular ring main unit with easily replaceable air chambers as described in claim 1, characterized in that: The gas box body (4) has a first switch position adjusting dynamic seal (23) on one side. The first switch position adjusting dynamic seal (23) is adapted to the position of the circuit breaker main shaft (13) and is connected to the circuit breaker main shaft (13).

8. A modular ring main unit with easily replaceable air chambers according to claim 1, characterized in that: The gas box body (4) has a second switch position adjusting dynamic seal (24) on one side. The second switch position adjusting dynamic seal (24) is adapted to the position of the isolation spindle (14) and is connected to the isolation spindle (14).

9. A modular ring main unit with easily replaceable air chambers as described in claim 6, characterized in that: The ends of the circuit breaker dynamic seal (15) and the isolation dynamic seal (16) are both chamfered, and the end length of the isolation dynamic seal (16) is greater than the end length of the circuit breaker dynamic seal (15).

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