Wiring terminal box for high-voltage switching station

Abstract

The utility model discloses a wiring terminal box for a high-voltage switching station, which comprises a box body, and a column body I, a column body II and a column body III which are arranged on two sides of the box body, and further comprises a connector bar which is arranged in the middle of the interior of the box body and is provided with a butt joint seat assembly through a baffle plate. The two ends of the butt joint seat assembly are provided with butt joint grooves and wiring terminal assemblies, each wiring terminal assembly comprises a wiring frame detachably installed in the corresponding butt joint groove, a groove is formed in the bottom of the box body below the connector bar, and a heat exchange plate attached to the bottom of the connector bar is arranged at the top end in the groove. According to the utility model, the modular design is adopted, and each wiring terminal assembly can be flexibly combined and installed. The design not only facilitates installation and maintenance, but also greatly improves the versatility and adaptability of the wiring terminal box.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage switch station technology, specifically to a terminal block box for high-voltage switch stations. Background Technology

[0002] Terminal blocks are interface devices in power systems used for transferring construction lines, marking branch lines, and providing convenient wiring and tracing. In high-voltage switchyards, the performance of terminal blocks is crucial to the stable operation of the entire power system. With the continuous development of power systems, the requirements for terminal blocks used in high-voltage switchyards are also increasing.

[0003] Traditional terminal blocks have several shortcomings. They are mostly fixed structures with complex connections between components, requiring significant time and effort for installation, maintenance, or component replacement within the confined space. In harsh outdoor, humid, or dusty environments, traditional terminal blocks lack sufficient dust and water resistance, allowing dust and rainwater to enter and corrode the terminals and electrical components, shortening equipment lifespan and increasing maintenance costs. Furthermore, the terminals in high-voltage switchgear generate substantial heat during operation. If this heat cannot be dissipated effectively, it can lead to overheating, affecting terminal block performance and lifespan, and potentially causing electrical faults, reducing the stability and reliability of the power system. Summary of the Invention

[0004] The purpose of this utility model is to provide a terminal box for high-voltage switch stations to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a terminal box for a high-voltage switch station, comprising a box body and three columns disposed on both sides of the box body, and further comprising...

[0006] The terminal block is located in the middle of the box body, and a docking seat assembly is provided on the terminal block through a baffle. Both ends of the docking seat assembly are provided with docking grooves, and the bottom of the docking seat assembly is provided with a conductive sheet connecting the two docking grooves. Limiting holes are provided on the docking seat assembly on one side of the docking groove.

[0007] A terminal block assembly includes a terminal frame that can be detachably installed inside a mating groove. The top of one side of the terminal frame is provided with a plug rod that matches a limiting hole via a protrusion. The top of the plug rod is provided with a limiting ball head. The top of the terminal frame is also provided with a threaded rod. The top of the threaded rod extends into the interior of the terminal frame and is provided with a movable pressure block. The bottom of the terminal frame below the movable pressure block is provided with a fixed pressure block. The bottom of the fixed pressure block is provided with a mating gasket that contacts the conductive sheet.

[0008] The bottom of the box below the terminal block is provided with a groove, and the top of the groove is provided with a heat exchange plate that fits against the bottom of the terminal block. The bottom of the heat exchange plate is evenly provided with fins, and a cooling fan is provided on the inner side of the fins. Protective nets are provided on the box at both ends of the groove.

[0009] One end of each of the three columns is provided with a sealing plug through a docking hole, and the inside of the docking hole is provided with a conical groove. One end of the sealing plug is provided with a conical rubber pad that matches the conical groove.

[0010] Furthermore, elastic limiting blocks are provided on the inner walls of both sides of the limiting hole. The distance between the elastic limiting block and the top of the limiting hole is matched with the diameter of the limiting ball head, and the distance between the two elastic limiting blocks is smaller than the diameter of the limiting ball head.

[0011] Furthermore, the inner walls of both of the mating slots are provided with sliding grooves, and both sides of the wiring frame are provided with sliding strips that match the sliding grooves.

[0012] Furthermore, an expansion joint is provided in the middle of the conical rubber pad, and a threaded post is provided between the conical rubber pad and the sealing plug. The opening of the mating hole is provided with an internal thread structure that matches the threaded post.

[0013] Furthermore, each of the three columns has a wire hole 1 at its center, and the sealing plug has a wire hole 2 at its center. The wire hole 1 and the wire hole 2 are the same size.

[0014] Furthermore, the outer side of the box is evenly provided with mounting bait blocks, each mounting bait block is provided with a fixing hole, and the top of the box is also provided with a sealing top cover.

[0015] This utility model relates to a terminal box for high-voltage switch stations, which has the following significant advantages compared to the prior art:

[0016] 1. Modular design enhances flexibility and versatility:

[0017] This utility model adopts a modular design, allowing for flexible combination and installation of various terminal block components. This design not only facilitates installation and maintenance but also greatly improves the versatility and adaptability of the terminal block box. Users can add, remove, or replace modules according to actual needs, avoiding the inconvenience and resource waste associated with traditional fixed structures. Furthermore, the modular design facilitates future expansion, adapting to the needs of electrical systems of different sizes and types.

[0018] 2. Quick-connection structure improves work efficiency and safety:

[0019] By designing special terminals and a plug-in connection method, this invention enables rapid connection and disconnection of wires. Compared to traditional screw-fastened wiring methods, this quick-connection structure significantly saves wiring time and improves work efficiency. Simultaneously, the plug-in connection method reduces the risk of malfunctions caused by loose wiring, enhancing system safety and reliability. Especially during emergency repairs and equipment replacements, the quick-connection structure can significantly shorten downtime and reduce economic losses.

[0020] 3. Dustproof and waterproof design enhances environmental adaptability:

[0021] This invention features excellent dust and water resistance. The enclosure employs a sealed structure, incorporating a conical rubber gasket and sealing plugs to effectively prevent dust and rainwater from entering. This design not only protects the terminals and electrical components for proper operation but also makes the terminal box suitable for various harsh environmental conditions, such as outdoor, humid, and dusty environments. The dust and water resistance design extends the equipment's lifespan and reduces maintenance costs.

[0022] 4. Optimized heat dissipation improves stability and reliability:

[0023] A recessed design at the bottom of the enclosure, along with heat exchange plates and fins, works in conjunction with a cooling fan to create a well-designed heat dissipation channel. This design effectively dissipates the heat generated by the terminal blocks during operation, preventing overheating from affecting their performance and lifespan. This optimized heat dissipation not only improves the stability and reliability of the terminal block box but also reduces the failure rate caused by overheating, ensuring the continuous and stable operation of the electrical system.

[0024] 5. Structural optimization improves installation convenience and safety:

[0025] This utility model incorporates several optimizations in its detailed design. For example, the combination of the limiting hole and the elastic limiting block ensures accurate installation and stable fixation of the wiring frame; the sliding groove and slide bar allow the wiring frame to slide smoothly within the mating groove, making installation more convenient; the design of the conical rubber pad and threaded post enhances the sealing effect and installation firmness of the sealing plug. Furthermore, the design of the mounting block on the outside of the housing and the encapsulation top cover further improves the overall ease of installation and safety.

[0026] 6. Improved overall performance reduces operating costs:

[0027] By comprehensively applying the above design features, this invention improves wiring efficiency and equipment reliability while reducing operating and maintenance costs. The modular design and quick-connect structure reduce installation and maintenance time, while the dustproof, waterproof, and heat dissipation optimized design extends equipment lifespan, ultimately lowering the overall user cost.

[0028] In summary, this utility model has significant beneficial effects in terms of modular design, quick wiring, dust and water protection, and optimized heat dissipation. It not only improves the performance and reliability of the terminal box, but also enhances its environmental adaptability and ease of use. Attached Figure Description

[0029] Figure 1 This is a top view of the internal structure of the box of this utility model;

[0030] Figure 2 This is a schematic diagram of the docking seat assembly and the terminal block assembly of this utility model;

[0031] Figure 3 This is a side view of the terminal block assembly of this utility model.

[0032] Figure 4 This is a schematic diagram of the column and sealing plug structure of this utility model;

[0033] Figure 5 This is a schematic diagram of the internal structure of the groove in this utility model;

[0034] Figure 6 This is a side view of the box structure of this utility model;

[0035] In the diagram: 1. Column 1; 2. Column 2; 3. Column 3; 301. Wire Hole 1; 302. Conical Groove; 303. Connecting Hole; 4. Box; 401. Groove; 5. Terminal Block; 6. Connecting Seat Assembly; 601. Conductive Sheet; 602. Connecting Groove; 603. Slide; 604. Limiting Hole; 605. Elastic Limiting Block; 7. Baffle; 8. Mounting Block; 9. Terminal Block Assembly; 901. Limiting 902. Ball head; 903. Connecting rod; 904. Protrusion; 905. Threaded rod; 906. Connecting gasket; 907. Sliding strip; 908. Terminal block; 909. Fixed block; 10. Heat exchange plate; 11. Cooling fan; 12. Fins; 13. Protective mesh; 14. Sealing plug; 1401. Wire hole two; 1402. Threaded post; 1403. Conical rubber gasket; 15. Encapsulation top cover. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0037] Please see Figure 1-6This utility model provides an embodiment of a terminal box for a high-voltage switch station, comprising a box body 4 and three columns 1, 2, and 3 disposed on both sides of the box body 4, and further comprising...

[0038] Terminal block 5 is located in the middle of the box 4. Terminal block 5 is provided with a docking seat assembly 6 via baffle 7. Both ends of docking seat assembly 6 are provided with docking grooves 602. The bottom of docking seat assembly 6 is provided with a conductive sheet 601 connecting the two docking grooves 602. Limiting holes 604 are provided on the docking seat assembly 6 on one side of the docking grooves 602.

[0039] Box 4 is the main structure of this utility model. It is made of high-strength insulating material and has good electrical insulation performance and mechanical strength. Box 4 is rectangular in shape, with ample internal space to facilitate the installation and arrangement of various electrical components.

[0040] Terminal block 5 is located in the middle of the interior of box 4 and is used for connecting and distributing high-voltage cables. Terminal block 5 is made of high-quality conductive material, with good conductivity and corrosion resistance. The length of terminal block 5 matches the internal length of box 4 to ensure that it can accommodate a sufficient number of cable joints.

[0041] The connector assembly 6 is mounted on the terminal block 5 via a baffle 7 to enable quick connection of cable connectors. Both ends of the connector assembly 6 are provided with a mating groove 602, the size of which matches the specifications of the terminal block assembly 9, ensuring that the terminal block assembly 9 can be securely inserted into the mating groove 602.

[0042] The bottom of the docking assembly 6 is provided with a conductive plate 601 that connects the two docking slots 602. The conductive plate 601 is made of a high conductivity material to ensure reliable electrical connection between the terminal assemblies 9. The width of the conductive plate 601 is the same as the width of the docking slot 602, and its length is slightly longer than the distance between the docking slots 602 to ensure good electrical contact.

[0043] Each mating seat assembly 6 on one side of the mating groove 602 is provided with a limiting hole 604. The limiting hole 604 is used to fix the terminal assembly 9 and prevent it from shifting during use. The diameter of the limiting hole 604 is slightly larger than the diameter of the fixing pin of the cable connector, ensuring that the cable connector can be smoothly inserted and locked.

[0044] The terminal block assembly 9 includes a terminal frame 907 that can be detachably installed inside the mating groove 602. The inner walls of both mating grooves 602 are provided with sliding grooves 603, and both sides of the terminal frame 907 are provided with sliding strips 906 that match the sliding grooves 603.

[0045] The terminal block assembly 9 mainly consists of a terminal frame 907 and a mating groove 602. The mating groove 602 is installed on the main body of the equipment, and both sides of its inner wall are provided with sliding grooves 603. The sliding grooves 603 are rectangular grooves with smooth inner surfaces to facilitate the smooth sliding of the slide bar 906.

[0046] The wiring frame 907 is a rectangular frame, with slide bars 906 on both sides that match the slide groove 603. The cross-sectional shape of the slide bar 906 is the same as that of the slide groove 603, both being rectangular, to ensure that the two can fit tightly together.

[0047] On one side of the wiring frame 907, a plug rod 902 matching the limiting hole 604 is provided on the top of the protrusion 903. The top of the plug rod 902 is provided with a limiting ball head 901. Both sides of the limiting hole 604 are provided with elastic limiting blocks 605. The distance between the elastic limiting block 605 and the top of the limiting hole 604 is matched with the diameter of the limiting ball head 901, and the distance between the two elastic limiting blocks 605 is smaller than the diameter of the limiting ball head 901.

[0048] The wiring frame 907 is the main part of this utility model. Its material can be metal or high-strength plastic, and it has good mechanical strength and electrical insulation properties. A protrusion 903 is provided on the top of one side of the wiring frame 907. The function of the protrusion 903 is to fix and support the plug-in rod 902.

[0049] The plug-in rod 902 is positioned on top of the wiring frame 907 via a protrusion 903, and its material can be metal or a material with good conductivity. The length of the plug-in rod 902 is moderate to ensure that it can be smoothly inserted into the limiting hole 604. A limiting ball head 901 is provided at the top of the plug-in rod 902.

[0050] The limiting ball head 901 is located at the top of the insertion rod 902, and its diameter is precisely designed to ensure that it matches the elastic limiting block 605 inside the limiting hole 604. The limiting ball head 901 can be made of metal or wear-resistant material, with a smooth surface to reduce friction during insertion and removal.

[0051] The limiting hole 604 is provided on the component that mates with the wiring frame 907, and its internal space is sufficient to accommodate the plug rod 902 and the limiting ball head 901. Elastic limiting blocks 605 are provided on both inner walls of the limiting hole 604.

[0052] The elastic limiting block 605 is made of highly elastic rubber or plastic. Its function is to provide elasticity and ensure that the limiting ball head 901 can be effectively limited after being inserted into the limiting hole 604. The distance between each elastic limiting block 605 and the inner top of the limiting hole 604 is exactly equal to the diameter of the limiting ball head 901. This design ensures that the limiting ball head 901 can pass smoothly during insertion and is clamped by the elastic limiting block 605 after it is in place.

[0053] The top of the wiring frame 907 is also provided with a threaded rod 904. The top end of the threaded rod 904 extends into the interior of the wiring frame 907 and is provided with a movable pressure block 908. The bottom of the wiring frame 907 below the movable pressure block 908 is provided with a fixed pressure block 909. The bottom of the fixed pressure block 909 is provided with a mating gasket 905 that contacts the conductive sheet 601.

[0054] The wiring frame 907 is the core component of this device, and its top has mounting holes for the threaded rod 904. The wiring frame 907 is made of high-strength material, which has good corrosion resistance and mechanical strength. Its internal space is rationally designed to accommodate the conductive sheet 601 and other connecting components.

[0055] The threaded rod 904 is located at the top of the terminal block 907, with its tip extending into the interior of the terminal block 907. The outer surface of the threaded rod 904 has standard threads for easy engagement with the movable pressure block 908. The material selection for the threaded rod 904 should ensure that it does not deform or rust during prolonged use.

[0056] The movable pressure block 908 is installed at the top of the threaded rod 904 and moves up and down via a threaded connection. The material of the movable pressure block 908 should have good conductivity and wear resistance, and its surface is provided with grooves to hold the conductive sheet 601 in place, ensuring the stability of the electrical connection.

[0057] The fixed pressure block 909 is located at the bottom of the wiring frame 907, opposite to the movable pressure block 908. The fixed pressure block 909 is fixed to the wiring frame 907 by bolts or other fixing methods, and its bottom is provided with mounting holes for mating gaskets 905.

[0058] The mating gasket 905 is installed at the bottom of the fixing block 909 for contact with the conductive sheet 601. The material of the mating gasket 905 should have good conductivity and elasticity to form good electrical contact during the clamping process.

[0059] The bottom of the box 4 below the terminal block 5 is provided with a groove 401. The top of the groove 401 is provided with a heat exchange plate 10 that fits against the bottom of the terminal block 5. The bottom of the heat exchange plate 10 is evenly provided with fins 12. A cooling fan 11 is provided on the inner side of the fins 12. Protective nets 13 are provided on the box 4 at both ends of the groove 401.

[0060] The bottom of the housing 4 is provided with a groove 401. The depth and width of the groove 401 are designed according to the actual heat dissipation requirements. The main function of the groove 401 is to accommodate the heat exchange plate 10 and its related heat dissipation components, forming an independent heat dissipation space.

[0061] A heat exchange plate 10 is installed at the top of the recess 401, which is in contact with the bottom of the terminal block 5. The heat exchange plate 10 is made of a high thermal conductivity material, such as aluminum alloy or copper alloy, to ensure rapid heat transfer. Fins 12 are evenly distributed at the bottom of the heat exchange plate 10. The design of the fins 12 is intended to increase the heat dissipation area and improve heat dissipation efficiency. The height, spacing, and thickness of the fins 12 are all optimized to ensure the best heat dissipation effect.

[0062] A cooling fan 11 is installed on the inner side of the fins 12. The cooling fan 11 is a high-efficiency, quiet fan that can provide sufficient airflow to remove heat without affecting the operating environment of the equipment. The installation position and angle of the cooling fan 11 are carefully designed to ensure that the airflow can pass evenly through the fins 12, thereby maximizing the heat dissipation efficiency.

[0063] To protect the cooling fan 11 and fins 12, protective mesh 13 is installed on the housing 4 at both ends of the recess 401. The protective mesh 13 is made of corrosion-resistant, high-strength metal mesh, which can prevent foreign objects from entering the recess 401 while ensuring smooth airflow. The mesh size of the protective mesh 13 is reasonably designed to ensure the best balance between protection and ventilation.

[0064] One end of each of the three columns 1, 2, and 3 is provided with a sealing plug 14 through a docking hole 303, and a conical groove 302 is provided inside the docking hole 303. One end of the sealing plug 14 is provided with a conical rubber pad 1403 that matches the conical groove 302.

[0065] An expansion joint is provided in the middle of the conical rubber gasket 1403, and a threaded post 1402 is provided between the conical rubber gasket 1403 and the sealing plug 14. The opening of the mating hole 303 is provided with an internal thread structure that matches the threaded post 1402.

[0066] The center of each of the columns 1, 2, and 3 is provided with a wire hole 301, and the center of the sealing plug 14 is provided with a wire hole 1401. The wire hole 301 and the wire hole 1401 are the same size.

[0067] The outer side of the box body 4 is evenly provided with bait blocks 8, each bait block 8 is provided with a fixing hole, and the top of the box body 4 is also provided with a sealing top cover 15.

[0068] The wire hole 301 and the wire hole 1401 are the same size to ensure that the cable can pass through smoothly.

[0069] The internal conical groove 302 of the mating hole 303 allows the conical rubber gasket 1403 to fit tightly, thus achieving a good sealing effect. An expansion joint is provided in the middle of the conical rubber gasket 1403. This design ensures that when the sealing plug 14 is tightened into the mating hole 303, the conical rubber gasket 1403 precisely wraps around the cable, guaranteeing sealing performance.

[0070] A threaded post 1402 is provided between the sealing plug 14 and the conical rubber gasket 1403, and the opening of the mating hole 303 is provided with an internal thread structure that matches the threaded post 1402. Through the threaded connection, the sealing plug 14 can be firmly fixed in the mating hole 303, ensuring the reliability of the seal.

[0071] The outer side of the box 4 is evenly provided with bait blocks 8, and each bait block 8 is provided with a fixing hole. This design makes it easy to fix the box 4 in the required position and improves the stability of the overall structure.

[0072] The top of the box 4 is equipped with a top cover 15. The design of the top cover 15 can effectively protect the components inside the box and prevent the external environment from affecting the internal structure.

[0073] When this application embodiment is used,

[0074] Equipment installation preparation:

[0075] Prepare the terminal box and related accessories, such as cables, for the high-voltage switch station to be installed. According to the actual installation location, check the fixing holes on the mounting blocks 8 on the outside of the box 4, and use appropriate fasteners (such as bolts) to fix the box 4 in the designated position to ensure a firm installation.

[0076] Column and cable insertion and sealing:

[0077] According to the cable routing, insert the cable through the wire hole 301 of column 1, column 2, or column 3, and then exit through the wire hole 1401 of the sealing plug 14. Align the conical rubber gasket 1403 on the sealing plug 14 with the conical groove 302 inside the mating hole 303, and slowly rotate the sealing plug 14 to engage the threaded column 1402 with the internal thread structure at the opening of the mating hole 303. Continue rotating the sealing plug 14, and the conical rubber gasket 1403 will gradually deform and fit tightly against the cable and the inner wall of the mating hole 303. Due to the expansion joint design in the middle of the conical rubber gasket 1403, the sealing effect can be further improved, preventing dust, moisture, etc. from entering the interior of the box 4.

[0078] Cable connection: Strip an appropriate length of insulation from one end of the cable to be connected, exposing the conductor. Place the cable conductor between the fixed pressure block 909 and the movable pressure block 908 within the junction box 907. Rotate the threaded rod 904 to move the movable pressure block 908 downwards, pressing the cable conductor firmly.

[0079] Terminal block assembly installation:

[0080] Align the slide bars 906 on both sides of the wiring frame 907 with the slide grooves 603 on the inner wall of the mating groove 602. Slowly insert the wiring frame 907 into the mating groove 602 along the slide grooves 603 until the plug rod 902 on the top side of the wiring frame 907 is aligned with the limiting hole 604 on the mating seat assembly 6. Continue to push the wiring frame 907 so that the plug rod 902 is inserted into the limiting hole 604. At this time, the limiting ball head 901 will squeeze the elastic limiting block 605. After the limiting ball head 901 is fully inserted into the limiting hole 604, the elastic limiting block 605 returns to its original shape, locking the limiting ball head 901 and fixing the wiring frame 907. Ensure a good electrical connection between the mating gasket 905 and the conductive sheet 601.

[0081] Finally, the top cover 15 is installed on top of the box 4 to seal the internal space of the box and provide protection for subsequent installation.

[0082] Cooling system operation:

[0083] When the terminal box is put into use, the terminals generate heat during operation. This heat is transferred to the heat exchange plate 10 through the terminal block 5. The heat exchange plate 10 conducts the heat to the fins 12 at its bottom, increasing the heat dissipation area. The cooling fan 11 starts, and the airflow passes through the fins 12, carrying away the heat from the fins and dissipating it outside the box 4 through the protective mesh 13 at both ends of the groove 401. This achieves heat dissipation for the internal electrical components, ensuring that the terminal box operates within a suitable temperature range.

[0084] Equipment maintenance and repair:

[0085] Regularly check the sealing performance of the terminal box, inspecting the sealing plug 14 and the encapsulation top cover 15 for looseness or damage. Repair or replace them promptly if necessary. Check the connection of the terminal assembly 9, inspecting the movable pressure block 908 and the fixed pressure block 909 for looseness, and ensuring the connection between the cable and the conductive sheet 601 is good. Tighten any loose connections promptly. Clean the dust and debris from the cooling fan 11 and fins 12 to ensure the cooling system operates normally. Maintain or replace the cooling fan 11 if necessary. When it is necessary to add or remove terminal blocks, follow the above terminal assembly installation steps to disassemble or install the corresponding terminal frame 907 to achieve flexible addition or removal of modules.

[0086] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0087] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0088] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0089] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A terminal box for a high-voltage switch station, comprising a box body (4) and three columns (1), (2), and (3) disposed on both sides of the box body (4), characterized in that: Also includes Terminal block (5) is located in the middle of the box (4), and a docking seat assembly (6) is provided on the terminal block (5) through a baffle (7). Both ends of the docking seat assembly (6) are provided with docking grooves (602), and the bottom of the docking seat assembly (6) is provided with a conductive sheet (601) connecting the two docking grooves (602). Limiting holes (604) are provided on the docking seat assembly (6) on one side of the docking groove (602). The terminal assembly (9) includes a terminal frame (907) detachably installed inside the docking groove (602), and a plug rod (902) matching the limiting hole (604) is provided on the top of one side of the terminal frame (907) through a protrusion (903). The top of the plug rod (902) is provided with a limiting ball head (901). The top of the terminal frame (907) is also provided with a threaded rod (904). The top of the threaded rod (904) extends into the interior of the terminal frame (907) and is provided with a movable pressure block (908). The bottom of the terminal frame (907) below the movable pressure block (908) is provided with a fixed pressure block (909). The bottom of the fixed pressure block (909) is provided with a docking gasket (905) that contacts the conductive sheet (601). The bottom of the box (4) below the terminal block (5) is provided with a groove (401). The top of the groove (401) is provided with a heat exchange plate (10) that fits against the bottom of the terminal block (5). The bottom of the heat exchange plate (10) is evenly provided with fins (12). A cooling fan (11) is provided on the inner side of the fins (12). Protective nets (13) are provided on the box (4) at both ends of the groove (401). One end of each of the first column (1), the second column (2) and the third column (3) is provided with a sealing plug (14) through a docking hole (303), and a conical groove (302) is provided inside the docking hole (303). One end of the sealing plug (14) is provided with a conical rubber pad (1403) that matches the conical groove (302).

2. The terminal box for a high-voltage switch station according to claim 1, characterized in that: The inner walls on both sides of the limiting hole (604) are provided with elastic limiting blocks (605). The distance between the elastic limiting block (605) and the top of the limiting hole (604) is matched with the diameter of the limiting ball head (901), and the distance between the two elastic limiting blocks (605) is less than the diameter of the limiting ball head (901).

3. A terminal box for a high-voltage switchyard according to claim 1, characterized in that: The inner walls of both docking slots (602) are provided with sliding grooves (603), and the two sides of the wiring frame (907) are provided with sliding strips (906) that match the sliding grooves (603).

4. A terminal box for a high-voltage switchyard according to claim 1, characterized in that: The conical rubber pad (1403) has an expansion joint in the middle, and a threaded post (1402) is provided between the conical rubber pad (1403) and the sealing plug (14). The opening of the mating hole (303) is provided with an internal thread structure that matches the threaded post (1402).

5. A terminal box for a high-voltage switchyard according to claim 1, characterized in that: The center of each of the first column (1), the second column (2) and the third column (3) is provided with a wire hole (301), and the center of the sealing plug (14) is provided with a wire hole (1401). The wire hole (301) and the wire hole (1401) are the same size.

6. A terminal box for a high-voltage switchyard according to claim 1, characterized in that: The outer side of the box (4) is uniformly provided with mounting bait blocks (8), each mounting bait block (8) is provided with a fixing hole, and the top of the box (4) is also provided with a sealing top cover (15).

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