20kV compact cubicle substation independent pressure relief channel structure
By setting up an independent pressure relief channel on the 20kV compact prefabricated substation, the problems of the large shell and limited arc relief channels of traditional prefabricated substations are solved, and the safety, reliability and ease of operation of high-voltage equipment are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU POWERTECH ELECTRICAL EQUIP
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-14
AI Technical Summary
Traditional prefabricated substations have large enclosures and limited arc venting channels, resulting in low safety and affecting ease of operation.
An independent pressure relief channel is set up on the 20kV compact box-type substation. The pressure relief channel is located at the bottom of the high-voltage compartment and the rear of the cable compartment. It is equipped with pressure relief holes and arc venting plates. The high-voltage compartment and the cable compartment relieve pressure through the pressure relief channel without affecting each other. The transformer compartment is equipped with pressure relief holes at the bottom. When the pressure is too high, it is relieved through the pressure relief holes. Part of the pressure is released into the cable trench through the arc venting plates.
This provides a simple and direct arc extinguishing method, improving the safety of high-voltage equipment and operators, and ensuring both ease of operation and safety.
Smart Images
Figure CN224502738U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of high-voltage power distribution equipment, and in particular to an independent pressure relief channel structure for a 20kV compact box-type substation. Background Technology
[0002] Currently, in traditional high-voltage power distribution equipment, ordinary prefabricated substations have large enclosures, containing high-voltage cabinets, low-voltage cabinets, and transformers. They also have limited arc-extinguishing channels, numerous obstructions, and low safety.
[0003] Therefore, it is necessary to develop a new type of independent pressure relief channel structure for 20kV compact prefabricated substations to meet usage requirements, overcome the problems existing in the current technology, and improve safety. Utility Model Content
[0004] Purpose of the utility model: In view of the shortcomings and defects of the existing technology, this utility model provides an independent pressure relief channel structure for a 20kV compact box-type substation, which uses a simple and direct arc venting method to ensure electrical safety, make high-voltage equipment safer and more reliable, and protect personnel safety.
[0005] Technical solution: The present invention relates to an independent pressure relief channel structure for a 20kV compact prefabricated substation, characterized in that: an independent pressure relief channel is provided on the 20kV compact prefabricated substation, the pressure relief channel is located at the bottom of the high-voltage compartment and the rear of the cable compartment, and a pressure relief hole is provided at the bottom of the transformer compartment; the pressure relief channel is provided with an arc-extinguishing plate and a pressure relief hole.
[0006] The 20kV compact box-type substation is equipped with a high-voltage compartment, a cable compartment, and a transformer room.
[0007] The pressure relief hole is a knock-out hole.
[0008] The arc-venting plate is connected to the external cable trench.
[0009] The high-voltage chamber and the cable chamber are pressure-relieving channels that do not affect each other, and a pressure relief hole is provided at the bottom of the transformer chamber. When the pressure is too high, the pressure is relieved from the pressure relief hole and released into the cable trench from the arc relief plate.
[0010] Beneficial effects: Compared with the prior art, this utility model has the following significant advantages: This utility model has a novel structure, uses a simple and direct arc-venting method, ensures electrical safety, makes high-voltage equipment safer and more reliable, and protects personnel safety. It features a simple and efficient independent pressure relief channel, ensuring ease of operation for personnel; and its comprehensive arc-venting design provides higher safety and reliability. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;
[0012] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;
[0013] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 3 ;
[0014] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;
[0015] Figure 5 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;
[0016] In the diagram, 1 is a 20kV compact box-type substation; 2 is a pressure relief channel; 3 is an arc venting plate; 4 is a pressure relief hole; 5 is a high-voltage compartment; and 6 is a cable compartment. Detailed Implementation
[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0018] This utility model discloses an independent pressure relief channel structure for a 20kV compact prefabricated substation. An independent pressure relief channel 2 is installed on the 20kV compact prefabricated substation 1. The pressure relief channel 2 is located at the bottom of the high-voltage compartment 5 and the rear of the cable compartment 6. A pressure relief hole 4 is provided at the bottom of the transformer compartment. The pressure relief channel 2 includes an arc-extinguishing plate 3 and the pressure relief hole 4. The 20kV compact prefabricated substation 1 includes the high-voltage compartment 5, the cable compartment 6, and the transformer compartment. The pressure relief hole 4 is a knock-out hole. The arc-extinguishing plate 3 is connected to the external cable trench.
[0019] In use, the high-voltage chamber 5 and the cable chamber 6 use the pressure relief channel 2 with complementary influence to relieve pressure, and a pressure relief hole 4 is provided at the bottom of the transformer chamber. When the pressure is too high, the pressure is relieved from the pressure relief hole 4, and the pressure is released into the cable trench from the arc relief plate 3.
[0020] As shown in the figure, this utility model sets up an independent pressure relief channel on the basis of a 20kV compact box-type substation. Pressure relief channels are set at the bottom of the high-voltage cabinet gas box and the rear of the cable compartment, leading directly to the bottom. At the same time, knock-out holes are also provided at the bottom of the transformer compartment to ensure safety. The structure is simple and efficient, novel, and fully considers the safety of high-voltage electrical equipment.
[0021] The independent pressure relief channel of this utility model is simple, efficient, and fully functional. The high-voltage cable chamber releases pressure to the pressure relief channel at the bottom of the high-voltage cabinet gas box through the pressure relief plate. It shares the pressure relief channel with the bottom of the gas box and does not affect each other. At the same time, the design also takes into full consideration the possibility of unexpected phenomena in the transformer. Knockout holes are left at its bottom. When the pressure is too high, the pressure will be released first from this weak point. A portion of the pressure will also be released from the pressure relief plate into the cable trench.
[0022] This utility model features a novel structure and employs a simple and direct arc-extinguishing method to ensure electrical safety, making high-voltage equipment safer and more reliable, and protecting personnel safety. It is equipped with a simple and efficient independent pressure relief channel, ensuring ease of operation for personnel, and its comprehensive arc-extinguishing design provides higher safety and reliability.
Claims
1. A 20kV compact prefabricated substation independent pressure relief channel structure, characterized in that: An independent pressure relief channel (2) is set on the 20kV compact box-type substation (1). The pressure relief channel (2) is located at the bottom of the high-voltage compartment (5) and the rear of the cable compartment (6). A pressure relief hole (4) is provided at the bottom of the transformer room. The pressure relief channel (2) is equipped with an arc-extinguishing plate (3) and a pressure relief hole (4).
2. The independent pressure relief channel structure for a 20kV compact prefabricated substation according to claim 1, characterized in that: The 20kV compact box-type substation (1) is equipped with a high-voltage compartment (5), a cable compartment (6), and a transformer room.
3. The independent pressure relief channel structure for a 20kV compact prefabricated substation according to claim 1, characterized in that: The pressure relief hole (4) is a knock-out hole.
4. The independent pressure relief channel structure for a 20kV compact prefabricated substation according to claim 1, characterized in that: The arc-venting plate (3) is connected to the external cable trench.