Box-type switching station

Abstract

The utility model relates to the technical field of power distribution facilities, and discloses a box-type switching station which comprises a shell, a DTU terminal arranged in the shell and a plurality of electrical cabinets controlled by the DTU terminal, cables are connected between the electrical cabinets and internal interfaces of the DTU terminal, one side of the DTU terminal is provided with a lead frame, and the other side of the DTU terminal is provided with a lead wire. One side of the electrical cabinet is provided with a wire concentration frame communicated with the lead frame, and the cable is arranged in the lead frame and the wire concentration frame in a penetrating mode. The cable distribution device has the advantages of being high in cable distribution orderliness and convenient for subsequent maintenance.

Description

Technical Field

[0001] This application relates to the technical field of power distribution facilities, and in particular to a box-type switchgear. Background Technology

[0002] Switching stations are important facilities in power systems, usually located at nodes or branch intersections of the power system. They are mainly used to control, switch, and protect electrical equipment in the power system, such as circuit breakers and disconnectors.

[0003] In related technologies, a switching station generally includes an outer casing, a DTU terminal housed in the casing, and several electrical cabinets controlled by the DTU terminal. Cables are connected between the internal interfaces of the electrical cabinets and the DTU terminals to realize the electrical connection between the DTU terminals and each electrical cabinet.

[0004] However, the cables in the aforementioned switchgear are generally directly connected to the cabinet after being led out from the DTU terminal. This is especially problematic when there are a large number of cables, resulting in a generally messy arrangement that needs improvement. Utility Model Content

[0005] To improve the orderliness of cable distribution, this application provides a box-type switchgear.

[0006] This application provides a box-type opening and closing mechanism with the following technical solution:

[0007] A box-type switchgear includes an outer casing, a DTU terminal housed within the casing, and several electrical cabinets controlled by the DTU terminal. A cable connects the electrical cabinets to the internal interface of the DTU terminal. A lead frame is provided on one side of the DTU terminal, and a hub frame communicating with the lead frame is provided on one side of the electrical cabinets. The cable passes through the lead frame and the hub frame.

[0008] By adopting the above technical solution, the cables are orderly run through the lead frame and hub frame, and connected to the internal interfaces of the electrical components and DTU terminals in the electrical cabinet. The arrangement is highly orderly and the space is used rationally, which helps to reduce the inconvenience of maintenance caused by messy cables. In addition, the cables in this application are partially hidden in the lead frame and hub frame after installation. Compared with the traditional overall exposed design, the cables are not easy to age and be damaged due to long-term exposure, and have a long service life.

[0009] Optionally, the lead frame has an access port on the side away from the DTU terminal, and the access port has a protective plate that is detachably connected to the lead frame. The protective plate can open and close the access port.

[0010] By adopting the above technical solution, when a cable fault occurs, the operator can remove the protective plate to expose the inspection port of the lead frame, so as to facilitate the inspection and repair of the cable located in the lead frame.

[0011] Optionally, the outer casing includes a base, a box body fixedly mounted on the base, a door hinged to the box body, and an inspection door, wherein the inspection door corresponds to the position of the protective plate.

[0012] By adopting the above technical solution, when inspecting the cables in the lead frame, one only needs to open the inspection door to stand outside the casing to perform the inspection operation. Compared with the previous method of having to go inside the casing, this not only has the effect of simple operation, but also reduces the overall space occupied by the box-type switchgear and saves space resources.

[0013] Optionally, the enclosure is equipped with several lighting lamps.

[0014] By adopting the above technical solution, the lighting can emit light and illuminate the surrounding environment, making it easier for operators to inspect cables in dimly lit environments.

[0015] Optionally, the hub frame is provided with a plurality of heat dissipation holes, and the heat dissipation holes are distributed at intervals along the length direction of the hub frame.

[0016] By adopting the above technical solution, when the cable in the hub frame generates heat during operation, the heat will be discharged outward along the heat dissipation holes, thereby ensuring the stable operation of the cable.

[0017] Optionally, the lead frame is equipped with a cable tying mechanism for positioning the cable. The cable tying mechanism includes a cable tying block hinged in the lead frame and a positioning component for locking and unlocking the cable tying block. The cable tying block abuts against the side of the cable away from the DTU terminal.

[0018] By adopting the above technical solution, when the cable is installed in the lead frame, the cable bundle block can prevent the cable from moving away from the DTU terminal, which helps to improve the stability of the cable. The positioning component can lock the cable bundle block, thereby improving the limiting effect of the cable bundle block on the cable.

[0019] Optionally, one end of the wire harness block is a fixed end hinged to the lead frame, and the other end is a movable end that can rotate relative to the lead frame. The positioning assembly includes a connecting rod fixedly disposed on the movable end, a positioning block fixedly disposed on the side of the connecting rod away from the wire harness block, and a movable column rotatably disposed in the lead frame. The movable column has a positioning groove for the positioning block to pass through, and the groove wall of the positioning groove has a clearance cavity for the positioning block to rotate and extend into. The clearance cavity is closed on the side facing the wire harness block. The movable column can rotate to a state in which the opening of the positioning groove is aligned with or misaligned with the positioning block.

[0020] By adopting the above technical solution, after the cable in the lead frame is installed in place, the movable column is first rotated to align the positioning groove with the positioning block, then the wire bundle block is moved to the side closer to the movable column so that the positioning block extends into the positioning groove, and finally the movable column is rotated to the state where the positioning groove and the positioning block are misaligned, so that the positioning block is locked in the clearance cavity, thereby realizing the locking of the wire bundle block. The structure is simple and the operation is convenient.

[0021] Optionally, a rotating platform is fixedly provided in the lead frame, the movable column is rotatably connected to the rotating platform and an extension block is provided on the circumferential side wall, and a first stop block is provided on the rotating platform located on the rotation path of the extension block. When the extension block abuts against the first stop block, the positioning groove is aligned with the positioning block.

[0022] By adopting the above technical solution, when it is necessary to move the positioning block into or out of the positioning groove, the movable column can be controlled to rotate to a position where the extension block abuts against the first stop block, so as to quickly align the positioning groove and the positioning block.

[0023] Optionally, a second stop block is also provided on the rotating platform, located on the rotation path of the extension block. When the extension block abuts against the second stop block, the positioning groove is misaligned with the positioning block.

[0024] By adopting the above technical solution, when it is necessary to lock the wire harness block, the movable column can be rotated to a position where the extension block abuts against the second stop block, so that the positioning groove and the positioning block are misaligned, thereby locking the positioning block in the relief cavity.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The cables are neatly laid out in the lead frame and hub frame, which not only ensures a high degree of orderliness and facilitates later maintenance, but also provides protection from the lead frame and hub frame, resulting in a long service life.

[0027] 2. When inspecting the cables in the lead frame, simply open the inspection door and remove the protective plate to stand outside the enclosure for inspection, which is convenient.

[0028] 3. When the cable is installed in the lead frame, the cable bundle block abuts against one side of the cable, which helps to prevent the cable from moving relative to the lead frame; the positioning component can lock the cable bundle block, thereby improving the limiting effect of the cable bundle block on the cable. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of Example 1.

[0030] Figure 2 This is a structural diagram of the concealed access door in Embodiment 1.

[0031] Figure 3This is a schematic diagram of the structure when the outer shell is hidden in Embodiment 1.

[0032] Figure 4 This is a schematic diagram of the structure of the DTU terminal and lead frame in Example 1.

[0033] Figure 5 This is a schematic diagram of the wireframe structure in Example 1.

[0034] Figure 6 This is a schematic diagram of the cable, wire harness mechanism, and lead frame in Example 2.

[0035] Figure 7 This is a schematic diagram of the wire harness mechanism in Embodiment 2 when the positioning groove and the positioning block are misaligned.

[0036] Figure 8 This is a schematic diagram of the wire harness mechanism in Embodiment 2 when the positioning groove and the positioning block are aligned.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Outer shell; 11. Base; 12. Cabinet; 13. Cabinet door; 14. Inspection door; 15. Lighting lamp; 2. DTU terminal; 3. Electrical cabinet; 4. Cable; 5. Lead frame; 51. Inspection port; 52. Protective plate; 53. Fastening bolt; 54. Abutment block; 55. Rotating table; 551. First stop block; 552. Second stop block; 6. Cable tray; 61. Heat dissipation hole; 7. Cable bundling mechanism; 71. Cable bundling block; 711. Fixed end; 712. Movable end; 72. Positioning assembly; 721. Connecting rod; 722. Positioning block; 723. Movable column; 724. Positioning groove; 725. Relief cavity; 726. Extension block. Detailed Implementation

[0039] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0040] This application discloses a box-type switchgear.

[0041] Example 1

[0042] Reference Figure 1 , Figure 2 and Figure 3 The box-type switch includes an outer shell 1, a DTU terminal 2 installed in the outer shell 1, and several electrical cabinets 3 controlled by the DTU terminal 2. In this embodiment, four electrical cabinets 3 are arranged side by side to illustrate its structure. Each electrical cabinet 3 is connected to the internal interface of the DTU terminal 2 by a cable 4, thereby realizing the electrical connection between the DTU terminal 2 and each electrical cabinet 3.

[0043] Reference Figure 1 and Figure 2The outer casing 1 includes a base 11, a box 12 fixedly mounted on the base 11, a door 13 hinged to the box 12, and an inspection door 14. The box 12, door 13, and inspection door 14 are all located on the upper side of the base 11, and the DTU terminal 2 and electrical cabinet 3 are located inside the box 12.

[0044] Reference Figure 3 , Figure 4 A cable guide frame 5 is provided on the side of the DTU terminal 2 away from the electrical cabinet 3. The cable guide frame 5 has a through hole that communicates with the inner cavity of the DTU terminal 2, allowing the cable 4 to extend into the cable guide frame 5 through the through hole. An inspection port 51 is provided on the side of the cable guide frame 5 away from the DTU terminal 2. A protective plate 52 is provided at the opening of the inspection port 51. The protective plate 52 is detachably connected to the cable guide frame 5 and can cover the inspection port 51.

[0045] Specifically, in this embodiment, a plurality of fastening bolts 53 are provided in the protective plate 52, and the fastening bolts 53 are threadedly connected to the lead frame 5; in other embodiments, the protective plate 52 can also be connected to the lead frame 5 by snap-fit ​​or other means, and any method that can realize the detachable connection between the protective plate 52 and the lead frame 5 is acceptable.

[0046] Reference Figure 2 , Figure 3 When the protective plate 52 is installed on the lead frame 5, the position of the inspection door 14 corresponds exactly to that of the protective plate 52, that is, the inspection door 14 is located outside the protective plate 52. With this arrangement, after the inspection door 14 is opened, the operator can stand outside the housing 12 and turn the fastening bolt 53 to remove the protective plate 52, thereby inspecting the cable 4 in the hub frame 6.

[0047] Reference Figure 2 Several lights 15 are installed on the top of the enclosure 12. The lights 15 are located on the upper side of the protective plate 52 and serve to provide illumination so that operators can inspect the cable 4 at night.

[0048] Reference Figure 3 , Figure 5 Each electrical cabinet 3 has a common cable management frame 6 on one side. The cable management frame 6 is fixedly installed on the electrical cabinet 3 and is interconnected with the lead frame 5. After the cable 4 exits from the lead frame 5, it can pass through the cable management frame 6 and enter the corresponding electrical cabinet 3. In order to improve the heat dissipation of the cable management frame 6, multiple heat dissipation holes 61 are distributed at intervals on the frame wall of the cable management frame 6. The heat dissipation holes 61 are evenly distributed along the length of the cable management frame 6. The heat generated by the cable 4 when working in the cable management frame 6 can be discharged outward along the heat dissipation holes 61, resulting in good heat dissipation effect.

[0049] The implementation principle of a box-type switchgear according to an embodiment of this application is as follows: During wiring, one end of the cable 4 is connected to the internal interface of the DTU terminal 2, and the other end passes through the lead frame 5 and the hub frame 6 in sequence to connect to the corresponding electrical cabinet 3. The arrangement is highly orderly and convenient for later maintenance. In case of line fault, the operator can first open the maintenance door 14, and then remove the protective plate 52 from the lead frame 5 to stand outside the box 12 to inspect the cable 4 in the lead frame 5, which is convenient.

[0050] Example 2

[0051] Reference Figure 6 The difference between this embodiment and embodiment 1 is that the lead frame 5 is provided with a number of wire-binding mechanisms 7 for positioning the cable 4. In this embodiment, the number of wire-binding mechanisms 7 and the number of cables 4 are equal and correspond one-to-one. In other embodiments, a group of wire-binding mechanisms 7 can also correspond to multiple cables 4. Any method that can achieve the positioning of the cable 4 is acceptable.

[0052] Reference Figure 6 , Figure 7 The cable bundling mechanism 7 includes a cable bundling block 71 and a positioning component 72 for locking and unlocking the cable bundling block 71. One end of the cable bundling block 71 is a fixed end 711 that is hinged to the lead frame 5, and the other end is a movable end 712 that can rotate relative to the lead frame 5. The end face of the cable bundling block 71 near the cable 4 is a concave arc surface. Multiple abutment blocks 54 are fixed to the side wall of the lead frame 5 near the DTU terminal 2. Each abutment block 54 is distributed vertically. In this embodiment, two abutment blocks 54 are used to illustrate their structure, and the cable bundling block 71 is located between the two abutment blocks 54. After the cable 4 is installed in place, the cable bundling block 71 can be rotated to fit against the cable 4, thereby limiting the cable 4 between the cable bundling block 71 and the abutment blocks 54 to improve the stability of the cable 4. Furthermore, guide posts can also be provided at the turning points of the cable 4 for the cable 4 to be wound around.

[0053] Reference Figure 7 , Figure 8 The positioning component 72 includes a connecting rod 721 fixed to the movable end 712 of the cable bundle 71, a positioning block 722 fixed to the side of the connecting rod 721 away from the cable bundle 71, and a movable column 723 rotatably disposed in the lead frame 5. A rotating platform 55 is fixed on the side wall of the lead frame 5 near the DTU terminal 2, and the movable column 723 is rotatably connected to the rotating platform 55.

[0054] Reference Figure 7 , Figure 8The movable column 723 has a positioning groove 724 on its side wall near the cable bundle block 71. The length of the positioning groove 724 is greater than the length of the positioning block 722, and the width is greater than the width of the positioning block 722. A clearance cavity 725 is formed on the groove wall of the positioning groove 724. The clearance cavity 725 is closed on the side facing the cable bundle block 71. The movable column 723 can be rotated to a state in which the opening of the positioning groove 724 is aligned with or misaligned with the positioning block 722. When the movable column 723 is rotated to align the positioning groove 724 with the positioning block 722, if the wire harness block 71 is rotated to the side closer to the cable 4, the positioning block 722 can pass into the positioning groove 724. If the movable column 723 is further rotated to misalign the positioning groove 724 with the positioning block 722, the positioning block 722 will enter the relief cavity 725. At this time, the positioning block 722 is blocked by the cavity wall of the relief cavity 725 and cannot be separated from the movable column 723, so that the wire harness block 71 is not easy to move relative to the cable 4, and the wire harness block 71 has a good limiting effect on the cable 4.

[0055] Reference Figure 7 , Figure 8 An extension block 726 is fixed to the circumferential sidewall of the movable column 723. A first stop block 551 and a second stop block 552 are fixedly installed on the rotating table 55. Both the first stop block 551 and the second stop block 552 are located on the rotation path of the extension block 726. When the extension block 726 abuts against the first stop block 551, the movable column 723 is in a position that aligns the positioning groove 724 with the positioning block 722; when the extension block 726 abuts against the second stop block 552, the movable column 723 is in a position that offsets the positioning groove 724 from the positioning block 722.

[0056] The implementation principle of a box-type switchgear according to an embodiment of this application is as follows: After the cable 4 is laid in place, the movable column 723 is first rotated so that the extension block 726 abuts against the first stop block 551, so that the positioning groove 724 is aligned with the positioning block 722; then the wire harness block 71 is rotated to the side closer to the cable 4 so that the positioning block 722 extends into the positioning groove 724; then the movable column 723 is rotated so that the extension block 726 abuts against the second stop block 552, so that the positioning block 722 is locked in the clearance cavity 725. At this time, the wire harness block 71 can limit the cable 4, which is beneficial to improving the stability of the cable 4.

[0057] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A box-type switchgear, comprising a housing (1), a DTU terminal (2) disposed in the housing (1), and a plurality of electrical cabinets (3) controlled by the DTU terminal (2), wherein a cable (4) is connected between the electrical cabinet (3) and the internal interface of the DTU terminal (2), characterized in that: A lead frame (5) is provided on one side of the DTU terminal (2), and a hub frame (6) connected to the lead frame (5) is provided on one side of the electrical cabinet (3). The cable (4) is passed through the lead frame (5) and the hub frame (6).

2. The box-type switchgear according to claim 1, characterized in that: The lead frame (5) has an inspection port (51) on the side away from the DTU terminal (2). The opening of the inspection port (51) is provided with a protective plate (52) that is detachably connected to the lead frame (5). The protective plate (52) can open and close the inspection port (51).

3. The box-type switchgear according to claim 2, characterized in that: The outer casing (1) includes a base (11), a box (12) fixedly mounted on the base (11), a door (13) hinged on the box (12), and an inspection door (14), the inspection door (14) being positioned corresponding to the protective plate (52).

4. The box-type switchgear according to claim 3, characterized in that: Several lighting lamps (15) are installed in the housing (12).

5. The box-type switchgear according to claim 1, characterized in that: The hub frame (6) is provided with a plurality of heat dissipation holes (61), and the heat dissipation holes (61) are distributed at intervals along the length direction of the hub frame (6).

6. The box-type switchgear according to claim 1, characterized in that: The lead frame (5) is equipped with a cable bundling mechanism (7) for positioning the cable (4). The cable bundling mechanism (7) includes a cable bundling block (71) hinged in the lead frame (5) and a positioning component (72) for locking and unlocking the cable bundling block (71). The cable bundling block (71) abuts against the side of the cable (4) away from the DTU terminal (2).

7. The box-type switchgear according to claim 6, characterized in that: One end of the wire harness block (71) is a fixed end (711) that is hinged to the lead frame (5), and the other end is a movable end (712) that can rotate relative to the lead frame (5). The positioning component (72) includes a connecting rod (721) fixedly disposed on the movable end (712), a positioning block (722) fixedly disposed on the side of the connecting rod (721) away from the wire harness block (71), and a movable column (723) rotatably disposed in the lead frame (5). The movable column (723) has a positioning groove (724) for the positioning block (722) to pass through. The groove wall of the positioning groove (724) has a relief cavity (725) for the positioning block (722) to rotate and extend into. The relief cavity (725) is closed on the side facing the wire harness block (71). The movable column (723) can rotate to a state in which the opening of the positioning groove (724) is aligned with or misaligned with the positioning block (722).

8. The box-type switchgear according to claim 7, characterized in that: A rotating platform (55) is fixedly installed in the lead frame (5). The movable column (723) is rotatably connected to the rotating platform (55) and an extension block (726) is provided on the circumferential side wall. A first stop block (551) is provided on the rotating platform (55) located on the rotation path of the extension block (726). When the extension block (726) abuts against the first stop block (551), the positioning groove (724) is aligned with the positioning block (722).

9. The box-type switchgear according to claim 8, characterized in that: The rotating platform (55) is also provided with a second stop block (552) located on the rotation path of the extension block (726). When the extension block (726) abuts against the second stop block (552), the positioning groove (724) and the positioning block (722) are misaligned.

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