A type of easy-to-maintain distribution box / JP cabinet

Abstract

This invention relates to the field of distribution box (JP) cabinet technology, specifically to a JP cabinet that is easy to maintain. It includes a cabinet body, a compensation chamber disposed inside the cabinet body, and multiple capacitors disposed inside the compensation chamber. A fixed base is fixedly installed at the bottom of the compensation chamber. Multiple evenly distributed mounting slots are formed inside the fixed base. Sliding seats are slidably installed inside each of the mounting slots. Support frames are fixedly installed on the tops of each of the sliding seats. The bottom ends of each mounting slot are connected to limit slot one and limit slot two. The advantages of this invention are: it reduces the time spent disassembling and assembling capacitors during maintenance; and in the event of a single capacitor failure, it eliminates the need to move other sliding seats, allowing replacement simply by removing the corresponding sliding seat. This design not only significantly improves the operation and maintenance efficiency of the JP cabinet but also aligns closely with the "modular and easy-to-maintain" development trend in the field of power electronic component manufacturing.

Description

Technical Field

[0001] This invention relates to the field of distribution box / JP cabinet technology, specifically to a distribution box / JP cabinet that is easy to maintain. Background Technology

[0002] The power distribution unit (JP) is a core integrated device on the low-voltage distribution side of a power system. It is primarily used at the end of 10kV and below distribution networks, undertaking four core functions: power distribution, metering, protection, and control. It serves as a crucial hub connecting the power grid and users. Due to its compact design and high functional integration, it is widely used in low-voltage distribution scenarios, especially as a standard configuration in rural power grid upgrades and industrial power distribution. Its stable performance is closely related to the manufacturing standards (modularization, ease of maintenance, etc.) and technological level of the power electronic components. From internal capacitors and circuit breakers to metering modules, the manufacturing quality of each component directly determines the operational reliability of the JP.

[0003] In a typical JP (Power Switchgear) cabinet design, a separate compensation chamber is usually included. Its core function is to compensate for low-voltage reactive power, improve the power factor of the power grid, reduce line losses, and stabilize voltage. The capacitor, a core component of reactive power compensation, is located inside the compensation chamber. These capacitors are typical low-voltage energy storage components in the field of power electronic component manufacturing. Their key parameters, such as casing strength, terminal spacing accuracy, and mounting hole tolerances, must all comply with industry standards for power electronic component manufacturing to ensure compatibility with the compact installation requirements of the JP cabinet.

[0004] As a compact outdoor power distribution device, the JP cabinet's overall size must be adapted to outdoor installation scenarios, resulting in a strict compression of the internal space of the compensation chamber. When multiple capacitors are installed in the compensation chamber, they must be closely arranged and fixed to the bottom of the compensation chamber with bolts. When fixing the capacitors, the end closer to the operator is easy to fix, while the end farther from the operator is blocked by the adjacent capacitors, making it impossible for the operator to look down and observe the fixing position closely. The operator can only operate the bolts by feel, which makes it impossible to quickly insert the bolts into the bolt holes at the end of the capacitor for fixing. This not only causes inconvenience to the operator but also increases the time spent on disassembly and assembly during capacitor maintenance. Summary of the Invention

[0005] The purpose of this invention is to provide a power distribution box JP cabinet that is easy to maintain, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a distribution box JP cabinet that is easy to maintain, comprising a cabinet body, a compensation chamber disposed inside the cabinet body, and a plurality of capacitors disposed inside the compensation chamber. A fixed base is fixedly installed at the bottom of the compensation chamber. A plurality of evenly distributed mounting slots are opened inside the fixed base. A sliding seat is slidably installed inside each of the plurality of mounting slots. A support frame is fixedly installed on the top of each of the plurality of sliding seats. The plurality of capacitors are respectively fixedly installed on the top of their respective support frames by bolts. The two ends of the bottom of the plurality of mounting slots are connected to a limit slot one and a limit slot two. A locking mechanism is provided inside each of the plurality of sliding seats. A control mechanism is provided inside each sliding seat.

[0007] Preferably, slide rails are provided between the two sides of the plurality of sliding seats and the sidewalls of their respective mounting slots, the fixed parts of the plurality of slide rails are fixedly installed on the sidewalls of their respective mounting slots, and the movable parts of the plurality of slide rails are fixedly connected to their respective sliding seats.

[0008] Preferably, the locking mechanism includes a rotating shaft and a reset assembly. The rotating shaft is rotatably mounted inside the sliding seat. A handle is fixedly mounted on one side of the rotating shaft. A limiting plate is fixedly sleeved on the outer side of the rotating shaft away from the handle. The limiting plate cooperates with the corresponding limiting groove one and limiting groove two.

[0009] Preferably, the reset assembly includes a connecting block and an extension rod. Guide rods are slidably sleeved at both ends of the connecting block, and springs are sleeved on the outside of both guide rods. A transmission rod is fixedly installed at one end of the connecting block, and the extension rod is fixedly installed on the top of the corresponding limiting plate. A transmission groove is opened inside the extension rod, and the transmission rod is movably installed inside the transmission groove.

[0010] Preferably, the control mechanism includes a control bracket, multiple connecting components, and a fixing component. The control bracket is slidably fitted inside the fixed base. A threaded adjusting rod is rotatably installed at one end of the control bracket. An adjusting plate is externally threaded to the bottom end of the threaded adjusting rod. A limiting rod is sleeved inside the adjusting plate at the end away from the threaded adjusting rod. A second spring is fixedly installed at one end of the top of the control bracket. A telescopic component is provided at the end of the second spring away from the control bracket.

[0011] Preferably, the telescopic component includes a T-shaped groove, which is formed at one end inside the sliding seat. A T-shaped slider is slidably installed inside the T-shaped groove. A telescopic bracket is fixedly installed on the side of the T-shaped slider away from the T-shaped groove. The end of the spring away from the control bracket is fixedly connected to the telescopic bracket. The end of the telescopic bracket away from the T-shaped slider is slidably connected to the control bracket.

[0012] Preferably, the connecting assembly includes a fixed rod and a connecting groove. The bottom of the fixed rod is fixedly connected to the top of the control bracket. A connecting rod is rotatably mounted on one end of the top of the fixed rod. A transmission groove is provided at the end of the connecting rod near the fixed rod. A transmission rod is movably mounted inside the transmission groove. A vertical rod is fixedly mounted on one side of the transmission rod. The bottom of the vertical rod is fixedly connected to an adjusting plate. The connecting groove is located at the end of the corresponding connecting block near the fixed rod. The end of the connecting rod away from the fixed rod cooperates with the connecting groove.

[0013] Preferably, the fixing component includes multiple fixing strips and multiple fixing slots. The multiple fixing strips are all fixedly installed on the top of the adjusting plate, and the multiple fixing slots are all opened inside the fixing base. The multiple fixing strips cooperate with the multiple fixing slots respectively.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. By removing a sliding seat from the compensation chamber and then fixing the capacitor on top of the sliding seat, operators can closely observe the positions of the capacitor's two ends. This allows for quick and sequential insertion of multiple bolts into multiple bolt holes, eliminating the need for manual operation and simplifying the capacitor fixing process. This reduces disassembly and assembly time during capacitor maintenance. Furthermore, in the event of a single capacitor failure, other sliding seats can be removed for replacement without disturbing the other sliding seats. This design not only significantly improves the JP cabinet's maintenance efficiency but also aligns perfectly with the "modular and easy-to-maintain" development trend in the power electronic component manufacturing industry.

[0015] 2. Through the set control mechanism, when multiple capacitors need to be installed in the compensation chamber at the same time initially, or when multiple capacitors need to be inspected in batches (such as regular maintenance or replacement of aging capacitors), all sliding seats can be pulled out at the same time, which reduces the operation time of batch capacitor replacement to a certain extent. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the compensation chamber of the present invention; Figure 3 This is a schematic diagram of the fixed base and multiple capacitors combined structure of the present invention; Figure 4 This is a schematic diagram of the fixed base and multiple sliding seats of the present invention; Figure 5 This is a schematic diagram of the fixed base structure of the present invention; Figure 6 This is a schematic diagram of the structure of multiple sliding seats of the present invention; Figure 7 This is a schematic diagram of one of the sliding seat structures of the present invention; Figure 8 This is a schematic diagram of the locking mechanism structure of the present invention; Figure 9 This is a schematic diagram of the connecting block structure of the present invention; Figure 10 This is a partial structural diagram of the control bracket of the present invention; Figure 11 This is a schematic diagram of the top structure of the fixing rod of the present invention; Figure 12 This is an internal sectional view of the fixed base of the present invention; Figure 13 This is a partial sectional view of the interior of the fixed base of the present invention.

[0017] The components represented by each number in the attached diagram are listed below: 1. Cabinet; 2. Compensation Chamber; 3. Capacitor; 4. Fixed Base; 5. Mounting Slot; 6. Sliding Seat; 7. Support Frame; 8. Slide Rail; 9. Limiting Slot 1; 10. Limiting Slot 2; 11. Rotating Shaft; 12. Handle; 13. Limiting Plate; 14. Connecting Block; 15. Guide Rod; 16. Spring 1; 17. Transmission Rod 1; 18. Transmission Slot 1; 19. Control Bracket; 20. Threaded Adjusting Rod; 21. Adjusting Plate; 22. Limiting Rod; 23. Spring 2; 24. Fixing Rod; 25. Connecting Rod; 26. Transmission Slot 2; 27. Transmission Rod 2; 28. Vertical Rod; 29. ​​Connecting Slot; 30. Fixing Strip; 31. Fixing Slot; 32. Extension Rod; 33. T-shaped Slide; 34. T-shaped Slider; 35. Telescopic Bracket. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] This invention provides a technical solution: such as Figures 1-13The diagram shows a JP distribution box cabinet that is easy to maintain, including a cabinet body 1, a compensation chamber 2 disposed inside the cabinet body 1, and multiple capacitors 3 disposed inside the compensation chamber 2. A fixed base 4 is fixedly installed at the bottom of the compensation chamber 2. Multiple evenly distributed mounting slots 5 are opened inside the fixed base 4. Sliding seats 6 are slidably installed inside the multiple mounting slots 5. Support frames 7 are fixedly installed on the top of the multiple sliding seats 6. The multiple capacitors 3 are respectively fixedly installed on the top of their respective support frames 7 by bolts. The two ends of the bottom of the multiple mounting slots 5 are connected to limit slot 1 9 and limit slot 2 10. The multiple sliding seats 6 are provided with a locking mechanism inside, and a control mechanism is provided inside the sliding seats 6.

[0020] Each of the multiple sliding seats 6 has a slide rail 8 between its two sides and the side wall of its corresponding mounting groove 5. The fixed parts of the multiple slide rails 8 are fixedly installed on the side wall of their respective mounting grooves 5, and the movable parts of the multiple slide rails 8 are fixedly connected to their respective sliding seats 6.

[0021] The locking mechanism includes a rotating shaft 11 and a reset assembly. The rotating shaft 11 is rotatably mounted inside the sliding seat 6. A handle 12 is fixedly mounted on one side of the rotating shaft 11. A limiting plate 13 is fixedly sleeved on the outside of the end of the rotating shaft 11 away from the handle 12. The limiting plate 13 cooperates with the corresponding limiting groove 9 and limiting groove 10.

[0022] The reset assembly includes a connecting block 14 and an extension rod 32. Guide rods 15 are slidably sleeved at both ends of the connecting block 14. Springs 16 are sleeved on the outside of both guide rods 15. A transmission rod 17 is fixedly installed at one end of the connecting block 14. The extension rod 32 is fixedly installed on the top of the corresponding limiting plate 13. A transmission groove 18 is opened inside the extension rod 32. The transmission rod 17 is movably installed inside the transmission groove 18.

[0023] The control mechanism includes a control bracket 19, multiple connecting components, and a fixing component. The control bracket 19 is slidably fitted inside the fixed base 4. A threaded adjusting rod 20 is rotatably installed at one end of the control bracket 19. An adjusting plate 21 is externally threaded to the bottom end of the threaded adjusting rod 20. A limiting rod 22 is sleeved inside the adjusting plate 21 at the end away from the threaded adjusting rod 20. A spring 23 is fixedly installed at one end of the top of the control bracket 19. A telescopic component is provided at the end of the spring 23 away from the control bracket 19.

[0024] The telescopic assembly includes a T-shaped slide groove 33, which is opened at one end inside the sliding seat 6. A T-shaped slider 34 is slidably installed inside the T-shaped slide groove 33. A telescopic bracket 35 is fixedly installed on the side of the T-shaped slider 34 away from the T-shaped slide groove 33. The end of the spring 23 away from the control bracket 19 is fixedly connected to the telescopic bracket 35. The end of the telescopic bracket 35 away from the T-shaped slider 34 is slidably connected to the control bracket 19.

[0025] The connecting assembly includes a fixed rod 24 and a connecting groove 29. The bottom of the fixed rod 24 is fixedly connected to the top of the control bracket 19. A connecting rod 25 is rotatably installed at one end of the top of the fixed rod 24. A transmission groove 26 is opened at the end of the connecting rod 25 near the fixed rod 24. A transmission rod 27 is movably installed inside the transmission groove 26. A vertical rod 28 is fixedly installed on one side of the transmission rod 27. The bottom of the vertical rod 28 is fixedly connected to the adjusting plate 21. The connecting groove 29 is opened at the end of the corresponding connecting block 14 near the fixed rod 24. The end of the connecting rod 25 away from the fixed rod 24 cooperates with the connecting groove 29.

[0026] The fixing assembly includes multiple fixing strips 30 and multiple fixing grooves 31. The multiple fixing strips 30 are all fixedly installed on the top of the adjusting plate 21, and the multiple fixing grooves 31 are all opened inside the fixing base 4. The multiple fixing strips 30 cooperate with the multiple fixing grooves 31 respectively.

[0027] Working principle: When in use, first install the fixed base 4 at the bottom of the compensation chamber 2. When multiple capacitors 3 need to be installed inside the compensation chamber 2 at the same time, first rotate the threaded adjustment rod 20. At the same time, under the action of the limit rod 22, the adjustment plate 21 moves downward and drives multiple fixing bars 30 to move downward. Multiple fixing bars 30 disengage from their respective fixing grooves 31. The control bracket 19 is not fixed to the fixed base 4. As the adjusting plate 21 moves downward, multiple connecting components and corresponding reset components are activated. The movement process of one of the connecting components and corresponding reset components is as follows: As the adjusting plate 21 moves downward, it drives the vertical rod 28 to move downward simultaneously. The transmission rod 27 at the top of the vertical rod 28 slides inside the transmission groove 26, and the connecting rod 25 rotates clockwise under force. When the adjusting plate 21 moves to the bottom, the connecting rod 25 also flips to its maximum angle, and the end of the connecting rod 25 away from the vertical rod 28 enters the connecting groove 29. At this time, the connection between the connecting block 14 and the connecting rod 25 is realized. The movement process of the other multiple connecting components and corresponding reset components is the same as described above, realizing the connection between multiple connecting blocks 14 and the control bracket 19. At this point, unlocking any one locking mechanism will simultaneously unlock the other locking mechanisms. The process of operating one locking mechanism and its corresponding reset component is as follows: Holding handle 12 and rotating it counterclockwise causes the connected rotating shaft 11 to rotate, which in turn causes the limiting plate 13 to rotate. The limiting plate 13 then causes its top extension rod 32 to rotate counterclockwise. The transmission rod 17 inside the transmission groove 18 pulls the connecting block 14 to move synchronously. The connecting block 14 slides along the two guide rods 15 and compresses the two springs 16. As the connecting block 14 moves, it drives the... The fixed rod 24 connected to the connecting rod 25 moves in the same direction, thereby driving the control bracket 19 to move. At this time, due to the movement of the control bracket 19, the movement process of the other multiple locking mechanisms and corresponding reset components is the same as described above. As the control bracket 19 moves, it compresses the spring 23. At this time, the limiting plates 13 in the multiple locking mechanisms are disengaged from their respective corresponding limiting grooves 9. The operator continues to pull the handle 12 to move outward, and the multiple sliding seats 6 and the control bracket 19 move outward synchronously. While the control bracket 19 moves, it drives the telescopic bracket 35 at one end. The T-shaped slider 34 moves synchronously and slides inside the T-shaped groove 33. When the multiple sliding seats 6 slide to their outermost limit positions, the handle 12 is released. Under the action of multiple springs 16, the multiple limiting plates 13 rotate into their respective limiting grooves 10, and the positions of the multiple sliding seats 6 are fixed again. At this time, the operator can fix the multiple capacitors 3 to the top of the multiple support frames 7 in sequence. After fixing, turn any handle 12 again to make the multiple limiting plates 13 disengage from their respective limiting grooves 10, and then push the multiple sliding seats inward. After pushing seat 6 to its innermost position, release handle 12. Multiple limit plates 13 will re-engage into their respective limit grooves 9. Finally, reverse threaded adjustment rod 20 to engage multiple fixing bars 30 into multiple fixing grooves 31, thus fixing the control bracket 19. Through the control mechanism, when multiple capacitors 3 need to be installed in the compensation chamber 2 simultaneously or when multiple capacitors 3 need to be inspected in batches (such as regular maintenance or replacement of aging capacitors 3), all sliding seats 6 can be pulled out simultaneously, which reduces the operation time for batch replacement of capacitors 3 to a certain extent. When one of the capacitors 3 needs to be inspected or replaced, simply rotate the corresponding handle 12 to disengage the corresponding limiting plate 13 from the corresponding limiting groove 9. Then pull the handle 12 and the corresponding sliding seat 6 outwards. When the sliding seat 6 slides to the outermost position, release the handle 12, and the limiting plate 13 will engage with the corresponding limiting groove 10. At this point, the operator can inspect or replace a single capacitor 3. By using a sliding seat 6 to move from inside the compensation chamber 2 and then fixing the capacitor 3 on top of the sliding seat 6, the operator can closely observe the fixed positions of both ends of the capacitor 3. This allows for quick insertion of multiple bolts into multiple bolt holes, eliminating the need for manual operation and simplifying the process of fixing the capacitor 3. This reduces the time spent disassembling and assembling the capacitor 3 during inspection. Furthermore, if a single capacitor 3 fails, it is not necessary to move other sliding seats 6; simply pull out the corresponding sliding seat 6 for replacement. It should be noted that this design not only significantly improves the maintenance efficiency of the JP cabinet but also aligns closely with the "modular and easy-to-maintain" development trend in the power electronic component manufacturing industry.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A power distribution box JP cabinet that is easy to maintain, comprising a cabinet body (1), a compensation chamber (2) disposed inside the cabinet body (1), and a plurality of capacitors (3) disposed inside the compensation chamber (2), characterized in that: The bottom of the compensation chamber (2) is fixedly installed with a fixed base (4). The fixed base (4) has multiple evenly distributed mounting slots (5) inside. Each of the mounting slots (5) has a sliding seat (6) slidably installed inside. Each of the sliding seats (6) has a support frame (7) fixedly installed on top. Each of the capacitors (3) is fixedly installed on the top of its corresponding support frame (7) by bolts. Both ends of the bottom of each of the mounting slots (5) are connected to a first limiting slot (9) and a second limiting slot (10). Each of the sliding seats (6) has a locking mechanism inside. Each of the sliding seats (6) has a control mechanism inside. The locking mechanism includes a rotating shaft (11) and a reset assembly. The rotating shaft (11) is rotatably mounted inside the sliding seat (6). A handle (12) is fixedly mounted on one side of the rotating shaft (11). A limiting plate (13) is fixedly sleeved on the outside of the end of the rotating shaft (11) away from the handle (12). The limiting plate (13) cooperates with the corresponding limiting groove one (9) and limiting groove two (10). The reset assembly includes a connecting block (14) and an extension rod (32). Guide rods (15) are slidably sleeved at both ends of the connecting block (14). Springs (16) are sleeved on the outside of both guide rods (15). A transmission rod (17) is fixedly installed at one end of the connecting block (14). The extension rod (32) is fixedly installed on the top of the corresponding limiting plate (13). A transmission groove (18) is opened inside the extension rod (32). The transmission rod (17) is movably installed inside the transmission groove (18). The control mechanism includes a control bracket (19), multiple connecting components and a fixing component. The control bracket (19) is slidably fitted inside the fixed base (4). A threaded adjusting rod (20) is rotatably installed at one end of the control bracket (19). An adjusting plate (21) is connected to the external thread at the bottom end of the threaded adjusting rod (20). A limiting rod (22) is sleeved inside the adjusting plate (21) at the end away from the threaded adjusting rod (20). A spring (23) is fixedly installed at one end of the top of the control bracket (19). A telescopic component is provided at the end of the spring (23) away from the control bracket (19). The telescopic assembly includes a T-shaped groove (33), which is opened at one end inside the sliding seat (6). A T-shaped slider (34) is slidably installed inside the T-shaped groove (33). A telescopic bracket (35) is fixedly installed on the side of the T-shaped slider (34) away from the T-shaped groove (33). The end of the second spring (23) away from the control bracket (19) is fixedly connected to the telescopic bracket (35). The end of the telescopic bracket (35) away from the T-shaped slider (34) is slidably connected to the control bracket (19). The connecting assembly includes a fixed rod (24) and a connecting groove (29). The bottom of the fixed rod (24) is fixedly connected to the top of the control bracket (19). A connecting rod (25) is rotatably installed at one end of the top of the fixed rod (24). A transmission groove (26) is opened at one end of the connecting rod (25) near the fixed rod (24). A transmission rod (27) is movably installed inside the transmission groove (26). A vertical rod (28) is fixedly installed on one side of the transmission rod (27). The bottom of the vertical rod (28) is fixedly connected to the adjusting plate (21). The connecting groove (29) is opened at one end of the corresponding connecting block (14) near the fixed rod (24). The end of the connecting rod (25) away from the fixed rod (24) cooperates with the connecting groove (29). The fixing component includes multiple fixing strips (30) and multiple fixing grooves (31). The multiple fixing strips (30) are fixedly installed on the top of the adjusting plate (21), and the multiple fixing grooves (31) are opened inside the fixing base (4). The multiple fixing strips (30) cooperate with the multiple fixing grooves (31) respectively.

2. The easily maintainable distribution box JP cabinet according to claim 1, characterized in that: Each of the multiple sliding seats (6) is provided with a slide rail (8) between its two sides and the side wall of its corresponding mounting groove (5). The fixed parts of the multiple slide rails (8) are fixedly installed on the side wall of their respective mounting grooves (5), and the movable parts of the multiple slide rails (8) are fixedly connected to their respective sliding seats (6).

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