A pre-assembled combined box-type substation

Abstract

This utility model relates to the field of prefabricated substation technology, providing a prefabricated modular substation including a moisture-proof base, on the top of which a voltage conversion composite unit box is installed. This utility model features a positioning and assembly structure. The modular unit design of the substation allows for the pre-assembly and independent debugging of the internal components of the high-voltage access unit pre-assembly box, low-voltage distribution unit pre-assembly box, and voltage conversion composite unit box in the factory, followed by on-site installation of the unit modules. This solves the problems of difficult, time-consuming, and labor-intensive on-site debugging. Furthermore, during on-site assembly, the positioning inserts on the high-voltage access unit pre-assembly box and low-voltage distribution unit pre-assembly box are aligned with the positioning slots of the voltage conversion composite unit box and pushed in. A spring inside the storage cylinder pushes a locking spring block out, which engages with the mating structure on the inner wall of the positioning slot, achieving mechanical locking. Quick assembly is achieved through rapid positioning and docking and automatic mechanical locking.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated substation technology, and in particular to a prefabricated modular substation. Background Technology

[0002] Compared with traditional civil engineering substations, prefabricated substations are characterized by compactness, integration, and strong adaptability. They are a type of power distribution equipment that integrates high-voltage switchgear, distribution transformers, and low-voltage power distribution devices. Prefabricated substations are widely used and play a key role in converting high-voltage electrical energy into low-voltage electrical energy and distributing it. Traditional prefabricated substations often have complex internal structures, with high-voltage switchgear, distribution transformers, low-voltage distribution devices, and other equipment tightly integrated into one unit. They often require on-site installation and on-site coordinated commissioning of equipment with different voltage levels and functions, which is time-consuming and labor-intensive. Furthermore, on-site assembly and installation requires positioning of each component on-site and tightening of bolts one by one, which is a cumbersome process and requires a large installation space. Therefore, it is necessary to design a prefabricated prefabricated substation. Utility Model Content

[0003] The purpose of this utility model is to provide a pre-assembled modular substation to solve the shortcomings of existing substations, such as the inability to pre-assemble functional units, the difficulty of on-site commissioning, and the low assembly efficiency.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a pre-assembled modular substation, including a moisture-proof base; The top of the moisture-proof base is equipped with a voltage conversion composite unit box, and the two ends of the voltage conversion composite unit box are respectively slidably connected to a high-voltage access unit pre-assembly box and a low-voltage power distribution unit pre-assembly box. Both the high-voltage access unit pre-assembly box and the low-voltage distribution unit pre-assembly box are equipped with a positioning assembly structure between them and the voltage conversion composite unit box. The positioning assembly structure includes a positioning slot set in the voltage conversion composite unit box. Positioning inserts are evenly arranged on both the high-voltage access unit pre-assembly box and the low-voltage distribution unit pre-assembly box. The positioning insert has a storage tube fixed inside, and the storage tube is connected to a locking spring block by a spring. The voltage conversion composite unit box is provided with a quick-release screw hole connected to the positioning slot, and a quick-release screw rod that abuts against the locking spring is threaded onto the quick-release screw hole.

[0005] Furthermore, the top two ends of the moisture-proof base are respectively movably connected with ball bearings that contact the high-voltage access unit pre-assembly box and the low-voltage distribution unit pre-assembly box. The ball bearings can not only contact the high-voltage access unit pre-assembly box and the low-voltage distribution unit pre-assembly box for support, but also facilitate the sliding of the two into the voltage conversion composite unit box for assembly.

[0006] Furthermore, the positioning inserts are symmetrically distributed at equal intervals on both sides of the high-voltage access unit pre-assembly box and the low-voltage distribution unit pre-assembly box, which improves the robustness during assembly.

[0007] Furthermore, the inner wall of the storage tube is uniformly provided with guide grooves, and the locking spring block is provided with a guide arm that matches the guide groove at the end near the spring.

[0008] Furthermore, a first door is movably connected to one end of the voltage conversion composite unit box, and rubber sealing strips are provided at the edges of both the first door and the voltage conversion composite unit box, which optimizes the sealing effect of the assembled equipment.

[0009] Furthermore, a second door is movably connected to the side of the high-voltage access unit pre-assembly box and the low-voltage distribution unit pre-assembly box away from the voltage conversion composite unit box. Rubber sealing strips are provided at the edges of the second door, the high-voltage access unit pre-assembly box, and the low-voltage distribution unit pre-assembly box, which optimizes the sealing effect of the assembled equipment.

[0010] Furthermore, both the high-voltage access unit pre-assembly box and the low-voltage distribution unit pre-assembly box are equipped with integrated racks for high and low voltage components.

[0011] Furthermore, limit slide rods are fixed at the four corners inside the voltage conversion composite unit box, and adjustable partition plates are slidably connected to the limit slide rods. Control equipment assembly chambers and transformer equipment assembly chambers are respectively set inside the voltage conversion composite unit box above and below the adjustable partition plates.

[0012] Furthermore, the inner wall of the voltage conversion composite unit box is provided with an adjustment groove that matches the adjustable partition plate, and the adjustment groove is uniformly provided with fixing screw holes that match the adjustable partition plate.

[0013] The advantages of the prefabricated modular substation provided by this utility model are as follows: By installing a positioning assembly structure and adopting a modular unit design for the substation, high-voltage access equipment, low-voltage distribution equipment, transformer equipment, and control and monitoring equipment can be pre-installed and independently debugged in the factory inside the high-voltage access unit pre-assembly box, low-voltage distribution unit pre-assembly box, and voltage conversion composite unit box. Then, the pre-installed and debugged unit modules are transported to the installation location, solving the problems of difficult, time-consuming, and labor-intensive on-site debugging. Furthermore, during on-site assembly, the positioning inserts on the high-voltage access unit pre-assembly box and low-voltage distribution unit pre-assembly box are aligned with the positioning slots of the voltage conversion composite unit box and pushed in. The spring inside the storage cylinder pushes the locking spring block to pop out and lock it with the mating structure on the inner wall of the positioning slot, achieving mechanical locking. Furthermore, during disassembly, the quick-release screw is screwed in through the quick-release screw hole, and the locking spring block is pushed to compress the spring and return to the storage cylinder, thus releasing the lock. The advantages of quick installation and disassembly are enhanced by quick positioning and docking and automatic mechanical locking. With adjustable partitions, the high-voltage access unit pre-assembly box and the low-voltage distribution unit pre-assembly box can be equipped with corresponding high and low voltage component integration racks for component integration and assembly when pre-installing functional components. The adjustable partition between the transformer equipment assembly room and the control equipment assembly room of the voltage conversion composite unit box can be flexibly adjusted through adjusting the slide groove and fixing screw holes and screws to adapt to transformers and control equipment of different specifications. It has strong applicability and modular design allows the equipment to be flexibly combined according to actual needs, adapting to the power supply needs of different scenarios. It is easy to maintain, and the corresponding unit box can be disassembled separately during fault repair without disassembling the whole equipment, which is highly flexible. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the assembled state of this utility model; Figure 2 This is a three-dimensional structural diagram of the pre-assembled low-voltage power distribution unit of this utility model in its disassembled state; Figure 3 This is a three-dimensional structural diagram of the voltage conversion composite unit box of this utility model in its disassembled state; Figure 4 This is a three-dimensional structural diagram of the locking spring block of this utility model; Figure 5 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0015] The following are the annotations in the diagram: 1. Moisture-proof base; 2. High-voltage access unit pre-assembly box; 3. First door; 4. Second door; 5. Voltage conversion composite unit box; 6. Low-voltage power distribution unit pre-assembly box; 7. Positioning assembly structure; 701. Positioning insert; 702. Locking spring; 703. Quick-release screw; 704. Guide slide arm; 705. Storage tube; 706. Spring; 707. Positioning slot; 708. Guide slide groove; 709. Quick-release screw hole; 8. High and low voltage component integrated rack; 9. Adjustable partition plate; 10. Adjustment slide groove; 11. Transformer equipment assembly chamber; 12. Fixing screw hole; 13. Control equipment assembly chamber; 14. Limiting slide rod. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-5 The present invention provides a pre-assembled modular substation, including a moisture-proof base 1.

[0018] Reference Figures 2-5 The top of the moisture-proof base 1 is equipped with a voltage conversion composite unit box 5, and the two ends of the voltage conversion composite unit box 5 are respectively slidably connected to a high-voltage access unit pre-assembly box 2 and a low-voltage power distribution unit pre-assembly box 6. Both the high-voltage access unit pre-assembly box 2 and the low-voltage distribution unit pre-assembly box 6 are equipped with a positioning assembly structure 7 between them and the voltage conversion composite unit box 5. The positioning assembly structure 7 includes a positioning slot 707 provided in the voltage conversion composite unit box 5. Positioning inserts 701 are evenly provided on both the high-voltage access unit pre-assembly box 2 and the low-voltage distribution unit pre-assembly box 6. The positioning insert 701 has a storage tube 705 fixed inside, and the storage tube 705 is connected to a locking spring block 702 through a spring 706. The voltage conversion composite unit box 5 is provided with a quick-release screw hole 709 connected to the positioning slot 707, and a quick-release screw 703 that abuts against the locking spring block 702 is threaded onto the quick-release screw hole 709. Positioning inserts 701 are symmetrically distributed at equal intervals on both sides of the high-voltage access unit pre-assembly box 2 and the low-voltage distribution unit pre-assembly box 6, which improves the sturdiness during assembly; the inner wall of the storage tube 705 is uniformly provided with guide grooves 708, and the locking spring block 702 is provided with a guide arm 704 that matches the guide grooves 708 at one end near the spring 706.

[0019] During assembly, the modular assembly structure, consisting of a voltage conversion composite unit box 5, a high-voltage access unit pre-assembly box 2, and a low-voltage distribution unit pre-assembly box 6, allows for pre-installation and commissioning of the high-voltage access equipment within the high-voltage access unit pre-assembly box 2 and the low-voltage distribution equipment within the low-voltage distribution unit pre-assembly box 6 at the factory. The transformer equipment and control / monitoring equipment are then assembled within the voltage conversion composite unit box 5 and independently commissioned. The pre-assembled and commissioned unit modules are then transported to the installation location, solving the problems of difficult, time-consuming, and labor-intensive on-site commissioning. During installation, the high-voltage access unit pre-assembly box 2 and the low-voltage distribution unit pre-assembly box 6 are assembled... The positioning insert 701 is aligned with the positioning slot 707 of the voltage conversion composite unit box 5 and pushed in. When the positioning insert 701 is fully inserted, the spring 706 in the storage tube 705 pushes the locking spring block 702 out and locks it with the matching structure of the inner wall of the positioning slot 707 to achieve mechanical locking. The guide slide arm 704 slides along the guide slide groove 708 on the inner side wall of the storage tube 705 to ensure that the locking spring block 702 moves smoothly and avoids jamming. When disassembling, the quick release screw 703 is screwed in through the quick release screw hole 709, and the locking spring block 702 is pushed to compress the spring 706 and return to the storage tube 705, which can release the lock and separate the high voltage access unit pre-assembly box 2 and the low voltage power distribution unit pre-assembly box 6 along the sliding direction.

[0020] The top two ends of the moisture-proof base 1 are movably connected to ball bearings that contact the high-voltage access unit pre-assembly box 2 and the low-voltage distribution unit pre-assembly box 6. The ball bearings can not only contact the high-voltage access unit pre-assembly box 2 and the low-voltage distribution unit pre-assembly box 6 for support, but also facilitate the sliding of the two into the voltage conversion composite unit box 5 for assembly.

[0021] Reference Figure 1 One end of the voltage conversion composite unit box 5 is movably connected to the first door 3. Both the first door 3 and the edge of the voltage conversion composite unit box 5 are provided with rubber sealing strips, which optimizes the sealing effect of the assembled equipment. Both the high-voltage access unit pre-assembly box 2 and the low-voltage power distribution unit pre-assembly box 6 are movably connected to a second door 4 on the side away from the voltage conversion composite unit box 5. Rubber sealing strips are provided at the edges of the second door 4, the high-voltage access unit pre-assembly box 2, and the low-voltage power distribution unit pre-assembly box 6, which optimizes the sealing effect of the assembled equipment.

[0022] During maintenance, users can independently inspect and maintain the three functional modules—voltage conversion composite unit box 5, high-voltage access unit pre-assembly box 2, and low-voltage power distribution unit pre-assembly box 6—through the first door 3 and the two second doors 4. This is highly targeted, easy to operate, and the rubber sealing strip can improve the overall sealing of the equipment, effectively resisting the intrusion of rainwater and sand.

[0023] Reference Figures 1-3 Both the high-voltage access unit pre-assembly box 2 and the low-voltage distribution unit pre-assembly box 6 are equipped with high and low voltage component integrated racks 8; the four corners inside the voltage conversion composite unit box 5 are fixed with limit slide rods 14, and adjustable partition plates 9 are slidably connected to the limit slide rods 14. The voltage conversion composite unit box 5 above and below the adjustable partition plates 9 are respectively equipped with control equipment assembly chamber 13 and transformer equipment assembly chamber 11. The inner wall of the voltage conversion composite unit box 5 is provided with an adjustment groove 10 that matches the adjustable partition plate 9, and the adjustment groove 10 is evenly provided with fixing screw holes 12 that match the adjustable partition plate 9.

[0024] When pre-installing functional components, the high-voltage access unit pre-installation box 2 selects the corresponding high and low voltage component integration frame 8 to install high-voltage switches, fuses, and other equipment, responsible for connecting to the external high-voltage power grid and providing initial protection. The low-voltage distribution unit pre-installation box 6 selects the corresponding high and low voltage component integration frame 8 to install low-voltage circuit breakers, reactive power compensation devices, etc., to distribute the converted low-voltage electricity to each user end. The voltage conversion composite unit box 5 is divided into upper and lower parts. The transformer equipment assembly room 11 installs the transformer to convert high-voltage electricity to low-voltage electricity, and the control equipment assembly room 13 installs the control components to realize intelligent control of the voltage conversion process. Furthermore, the adjustable partition plate 9 between the transformer equipment assembly room 11 and the control equipment assembly room 13 can flexibly adjust the internal space of the voltage conversion composite unit box 5 through the adjustment slide 10 and fixing screw hole 12, adapting to transformers and control equipment of different specifications, with strong applicability. The modular design allows the equipment to be flexibly combined according to actual needs, adapting to the power supply needs of different scenarios, and is easy to maintain. During fault repair, the corresponding unit box can be disassembled separately without disassembling the entire equipment, which is highly flexible.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A prefabricated modular substation, including a moisture-proof base (1); Its features are: The top of the moisture-proof base (1) is equipped with a voltage conversion composite unit box (5), and the two ends of the voltage conversion composite unit box (5) are respectively slidably connected to a high voltage access unit pre-assembly box (2) and a low voltage power distribution unit pre-assembly box (6). The high-voltage access unit pre-assembly box (2) and the low-voltage distribution unit pre-assembly box (6) are both equipped with a positioning assembly structure (7) between them and the voltage conversion composite unit box (5). The positioning assembly structure (7) includes a positioning slot (707) set in the voltage conversion composite unit box (5). Positioning inserts (701) are evenly arranged on both the high-voltage access unit pre-assembly box (2) and the low-voltage distribution unit pre-assembly box (6). The positioning insert (701) has a storage tube (705) fixed inside, and the storage tube (705) is connected to a locking spring block (702) through a spring (706). The voltage conversion composite unit box (5) is provided with a quick-release screw hole (709) connected to the positioning slot (707), and a quick-release screw (703) that abuts against the locking spring block (702) is threaded on the quick-release screw hole (709).

2. A prefabricated modular substation according to claim 1, characterized in that: The top two ends of the moisture-proof base (1) are respectively movably connected to ball bearings that are in contact with the high voltage access unit pre-assembly box (2) and the low voltage power distribution unit pre-assembly box (6).

3. A prefabricated modular substation according to claim 1, characterized in that: The positioning inserts (701) are symmetrically distributed at equal intervals on both sides of the high-voltage access unit pre-assembly box (2) and the low-voltage distribution unit pre-assembly box (6).

4. A prefabricated modular substation according to claim 1, characterized in that: The inner wall of the storage tube (705) is uniformly provided with guide grooves (708), and the locking spring block (702) is provided with a guide arm (704) that matches the guide grooves (708) at one end near the spring (706).

5. A prefabricated modular substation according to claim 1, characterized in that: One end of the voltage conversion composite unit box (5) is movably connected to the first door (3), and the edges of the first door (3) and the voltage conversion composite unit box (5) are both provided with rubber sealing strips.

6. A prefabricated modular substation according to claim 1, characterized in that: The high-voltage access unit pre-assembly box (2) and the low-voltage distribution unit pre-assembly box (6) are movably connected to a second door (4) on the side away from the voltage conversion composite unit box (5). A rubber sealing strip layer is provided at the edges of the second door (4), the high-voltage access unit pre-assembly box (2) and the low-voltage distribution unit pre-assembly box (6).

7. A prefabricated modular substation according to claim 1, characterized in that: Both the high-voltage access unit pre-assembly box (2) and the low-voltage distribution unit pre-assembly box (6) are equipped with high and low voltage component integration racks (8).

8. A prefabricated modular substation according to claim 1, characterized in that: Limiting slide rods (14) are fixed at the four corners inside the voltage conversion composite unit box (5). Adjustable partition plates (9) are slidably connected to the limiting slide rods (14). Control equipment assembly chamber (13) and transformer equipment assembly chamber (11) are respectively set inside the voltage conversion composite unit box (5) above and below the adjustable partition plates (9).

9. A prefabricated modular substation according to claim 8, characterized in that: The inner wall of the voltage conversion composite unit box (5) is provided with an adjustment groove (10) that matches the adjustable partition plate (9), and the adjustment groove (10) is uniformly provided with fixing screw holes (12) that match the adjustable partition plate (9).

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