Prefabricated substation high voltage cable box
By improving the bottom hole structure of the high-voltage cable box in the prefabricated substation and adopting the design of movable plate and cable clamp, the problem that traditional connectors cannot be adapted to cables of different specifications has been solved, achieving higher insulation distance and installation efficiency, and improving safety and cost-effectiveness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINJIANG HUADIAN TIANSHAN POWER GENERATION CO LTD
- Filing Date
- 2025-09-09
- Publication Date
- 2026-05-26
AI Technical Summary
Traditional prefabricated substations' high-voltage cable connectors cannot accommodate cables of different specifications, leading to difficulties in fixing or dust infiltration, and insufficient insulation distance, affecting safety and installation efficiency.
A prefabricated high-voltage cable box for substations is designed. By improving the bottom hole structure, adding movable plates and cable clamps, and using angle steel and bolts for connection, the cable can be stably fixed and the insulation distance increased.
It improves the adaptability and installation efficiency of cable connections, enhances insulation distance, reduces manufacturing costs, and ensures the safe operation of the transformer substation.
Smart Images
Figure CN224288902U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of prefabricated substation technology, specifically to a high-voltage cable box for a prefabricated substation. Background Technology
[0002] With the development of the new energy industry, more and more large-capacity, high-voltage prefabricated substations are being put into use. As capacity and voltage levels increase, the specifications of high-voltage connection cables and related cable accessories will inevitably become larger. In existing prefabricated substations, high-voltage cables in the high-voltage compartment typically enter through the bottom inlet hole. Some high-voltage cables have sheds attached. The traditional base structure's connection height can no longer meet the fixing requirements, and the insulation distance is insufficient. Different cable specifications mean that the through-holes of ordinary base fixing sizes are not suitable. Holes that are too large can easily allow dust to seep in, while holes that are too small make installation and fixing difficult. Therefore, the traditional substation connection seat structure cannot accommodate the fixing of more cable specifications. Utility Model Content
[0003] To solve the above-mentioned technical problems, this utility model provides a box-type high-voltage cable box for substations. The box has a reasonable structural design, makes use of the space at the bottom of the box, and improves the through hole structure to effectively improve the cable installation efficiency.
[0004] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:
[0005] A prefabricated substation high-voltage cable box includes a rectangular box body with an opening at the top. A rectangular hole is opened in the base of the high-voltage chamber. The upper edge of the box body is fixedly connected to the rectangular hole. The lower end of the box body is a lower sealing plate with three through holes. Each through hole has a semi-circular notch I. Angle steel I is fixed to the lower end of the notch, and a cable clamp is fixed to angle steel I. Sliding grooves are provided on both sides of the through holes. Three movable plates are slidably connected to the lower sealing plate. The movable plates are slidably connected to the sliding grooves on both sides. Each movable plate has a semi-circular notch II. The movable plates can slide to cover the through holes.
[0006] The movable plate notch II and the through hole notch I are offset vertically and face each other, and both are the same size.
[0007] Angle steel II is fixed around the rectangular hole of the high-pressure chamber base, and angle steel II is fixedly connected to the upper edge of the box body by bolts.
[0008] Furthermore, the slide is provided with three positioning holes, and positioning bolts are threaded into the positioning holes. By screwing down the positioning bolts, the movable plate can be pressed down, thus limiting the connection between the movable plate and the slide.
[0009] The cable clamp is fixed to angle steel I with bolts, and the center of the cable clamp is set directly below notch I.
[0010] The beneficial effects of this utility model are as follows: the device eliminates the need to increase the overall height of the transformer substation, increases the connection height of the high-voltage indoor cables, increases the insulation distance between the cable lap surface and the bottom of the base, improves the reliability of the transformer substation's safe operation, reduces manufacturing costs, and through the optimization of the cable through hole structure, it can accommodate more specifications of connecting cables, making cable threading, installation and fixing convenient and improving cable connection efficiency. Attached Figure Description
[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:
[0012] Appendix Figure 1 This is a side view structural diagram of an embodiment of the present utility model;
[0013] Figure 2 This is a schematic diagram of the lower sealing plate structure according to an embodiment of the present utility model.
[0014] 1-Box body, 2-Cable clamp, 3-Lower sealing plate, 4-Angle steel I, 5-Angle steel II, 6-Through hole, 7-Notch I, 8-Modible plate, 9-Slide groove, 10-Limit bolt, 11-Cable. Detailed Implementation
[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0016] As attached Figure 1 and attached Figure 2 The diagram shows a box-type substation high-voltage cable box, which includes a rectangular box body 1 with an opening at the top. The high-voltage chamber base has a rectangular hole, and the upper edge of the box body 1 is fixedly connected to the rectangular hole. The lower end of the box body 1 is a lower sealing plate 3, which has three through holes. Each through hole has a semi-circular notch I7, and an angle steel I4 is fixedly attached to the lower end of the notch. A cable clamp 2 is fixedly attached to the angle steel I4. Sliding grooves 9 are provided on both sides of the through holes. The lower sealing plate 3 is slidably connected to three movable plates 8, which are slidably connected to the sliding grooves 9 on both sides. Each movable plate 8 has a semi-circular notch II, and the movable plate can slide to cover the through holes.
[0017] The movable plate notch II and the through hole notch I7 are offset vertically and face each other, and both are the same size.
[0018] Angle steel II5 is fixed around the rectangular hole of the high-pressure chamber base, and the angle steel II5 is fixedly connected to the upper edge of the box body by bolts.
[0019] Furthermore, the slide is provided with three positioning holes, and positioning bolts are threaded into the positioning holes. By screwing down the positioning bolts, the movable plate can be pressed down, thus limiting the connection between the movable plate and the slide.
[0020] The cable clamp 2 is fixed to the angle steel I by bolts, and the center of the cable clamp 2 is set directly below the notch I.
[0021] Specific installation steps: Weld fixed angle steel II around the square hole at the bottom of the transformer substation base. The size is determined according to the size of the box. Use 40*40 angle steel, a total of 4 pieces, and weld them into a rectangle. First, use bolts to connect the cable clamp to the fixed angle steel I. Then, use bolts to connect the fixed angle steel I4 to the bottom of the lower sealing plate of the box. Slide the movable plate away from the notch I7 through the hole. Fix the assembled box to the fixed angle steel II5 on the base with bolts. Then, thread the cable through and fix the cable on the cable clamp. Slide the movable plate close to the notch I and press the movable plate with the limit bolts to complete the installation.
[0022] This embodiment can increase the fixing height of high-voltage cables by about 350mm. This height can also be adjusted according to the site conditions, which facilitates the connection and fixing of cables on site, increases cable stability, reduces manufacturing costs, and also increases the insulation distance. Through the improvement of the hole, it can accommodate more cable sizes, and at the same time, it is more convenient to install, thread, and fix cable clamps.
[0023] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. A prefabricated substation high-voltage cable box, characterized in that: It includes a rectangular box with an opening at the top. The high-voltage chamber base has a rectangular hole, and the upper edge of the box is fixedly connected to the rectangular hole. The lower end of the box is a lower sealing plate with three through holes. Each through hole has a semi-circular notch I, and an angle steel I is fixed to the lower end of the notch. A cable clamp is fixed to the angle steel I. There are grooves on both sides of the through holes. The lower sealing plate is slidably connected to three movable plates, which are slidably connected to the grooves on both sides. Each movable plate has a semi-circular notch II, and the movable plates can slide to cover the through holes.
2. The prefabricated substation high-voltage cable box according to claim 1, characterized in that: The movable plate notch II and the through hole notch I are offset vertically and face each other, and both are the same size.
3. The prefabricated substation high-voltage cable box according to claim 1, characterized in that: Angle steel II is fixed around the rectangular hole of the high-pressure chamber base, and angle steel II is fixedly connected to the upper edge of the box body by bolts.
4. The prefabricated substation high-voltage cable box according to claim 1, characterized in that: The slide has three positioning holes, and positioning bolts are threaded into the positioning holes.
5. The prefabricated substation high-voltage cable box according to claim 1, characterized in that: The cable clamp is fixed to angle steel I with bolts, and the center of the cable clamp is set directly below notch I.