Low-voltage draw-out type switch cabinet
By combining nylon screws with metal screws, the safety hazard of the pressure relief plate flying out is solved. The use of steel wire rope provides additional protection, thereby improving the safety of the low-voltage withdrawable switchgear.
Patent Information
- Application Number
- CN202423138514.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-19
AI Technical Summary
The pressure relief structure design of existing low-voltage withdrawable switchgear is prone to causing the pressure relief plate to fly out, posing a safety hazard.
The pressure relief plate is secured using a combination of nylon screws and metal screws. The nylon screws break during pressure relief, while the metal screws keep the pressure relief plate in place. A steel wire rope provides additional protection to prevent the pressure relief plate from flying off.
This improves the safety of the switchgear, prevents the pressure relief plate from flying out, and enhances safety.
Smart Images
Figure CN223567181U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of switch cabinet technology and relates to a low-voltage withdrawable switch cabinet. Background Technology
[0002] Low-voltage withdrawable switchgear is a widely used power distribution equipment in power systems. It has good flexibility and reliability and is suitable for various industrial and commercial power distribution applications.
[0003] The pressure relief structure used in current low-voltage withdrawable switchgear on the market is too simple, relying solely on fasteners to fix the pressure relief plate to one side of the cabinet. In the event of a pressure relief incident, this design can easily cause the pressure relief plate to fly out, which may cause personal injury. Therefore, it is necessary to design a low-voltage withdrawable switchgear. Summary of the Invention
[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a low-voltage withdrawable switchgear.
[0005] The objective of this utility model can be achieved through the following technical solution: A low-voltage withdrawable switchgear includes a switchgear body with multiple drawers. The switchgear body is characterized by having a pressure relief port located on its side. A pressure relief plate capable of sealing the pressure relief port is installed on the switchgear body. The upper part of the pressure relief plate is connected to the switchgear body via nylon screws, and the lower part is connected to the switchgear body via metal screws. An auxiliary screw is also connected to the switchgear body, with a connecting washer threaded through it. One end of the connecting washer is connected to a steel wire rope, and the other end of the steel wire rope is connected to the lower part of the pressure relief plate.
[0006] The pressure relief plate has a connecting hole at the top that is smaller at the top and larger at the bottom, which is designed to mate with nylon screws.
[0007] The pressure relief plate has a circular connection hole at its lower part that mates with a metal screw.
[0008] The connecting gasket and one end of the steel wire rope are connected by welding, and the other end of the steel wire rope is connected to the lower part of the pressure relief plate by welding.
[0009] Compared with existing technologies, this low-voltage withdrawable switchgear has the following advantages:
[0010] In this invention, a combination of nylon screws and metal screws is used to fix the pressure relief plate. During the pressure relief process, the nylon screws can be easily broken to achieve the pressure relief function, while the metal screws are responsible for holding the pressure relief plate on the switch cabinet body. In addition, when the nylon screws and metal screws are broken at the same time, the steel wire rope provides a second layer of protection, effectively preventing the pressure relief plate from flying out, thereby greatly improving safety. Attached Figure Description
[0011] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0012] Figure 2 This is an exploded view of the present invention;
[0013] In the diagram, 1. Switch cabinet body; 1a. Pressure relief port; 2. Drawer; 3. Nylon screw; 4. Pressure relief plate; 4a. Connection hole one; 4b. Connection hole two; 5. Steel wire rope; 6. Metal screw; 7. Connecting washer; 8. Auxiliary screw. Detailed Implementation
[0014] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0015] like Figures 1-2 As shown, this low-voltage withdrawable switchgear includes a switchgear body 1, on which multiple drawers 2 are provided. In this embodiment, the drawers 2 adopt an existing structure. A pressure relief port 1a is provided on the switchgear body 1, and the pressure relief port 1a is arranged on the side of the switchgear body 1. A pressure relief plate 4 that can close the pressure relief port 1a is installed on the switchgear body 1. The upper part of the pressure relief plate 4 is connected to the switchgear body 1 by nylon screws 3, and the lower part of the pressure relief plate 4 is connected to the switchgear body 1 by metal screws 6. An auxiliary screw 8 is also connected to the switchgear body 1. A connecting washer 7 is passed through the auxiliary screw 8. One end of the connecting washer 7 is connected to a steel wire rope 5, and the other end of the steel wire rope 5 is connected to the lower part of the pressure relief plate 4.
[0016] The pressure relief plate 4 has a connecting hole 4a at the top, which is smaller at the top and larger at the bottom, to cooperate with the nylon screw 3. With this structure, the nylon screw 3 can be fixed to the switch cabinet body 1 first, then the pressure relief plate 4 can be installed, then the metal screw 6 can be installed, and finally the metal screw 6 and the nylon screw 3 can be tightened completely.
[0017] The pressure relief plate 4 has a circular connecting hole 4b at the bottom that mates with the metal screw 6.
[0018] The connecting gasket 7 and one end of the steel wire rope 5 are connected by welding, and the other end of the steel wire rope 5 is connected to the lower part of the pressure relief plate 4 by welding.
[0019] In this invention, a combination of nylon screws 3 and metal screws 6 is used to fix the pressure relief plate 4. During the pressure relief process, the nylon screws 3 can be easily broken to achieve the pressure relief function, while the metal screws 6 are responsible for holding the pressure relief plate 4 on the switch cabinet body 1. In addition, when the nylon screws 3 and metal screws 6 are broken at the same time, the steel wire rope 5 provides a second layer of protection, effectively preventing the pressure relief plate 4 from flying out, thereby greatly improving safety.
[0020] All of the above components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.
[0021] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.
Claims
1. A low-voltage withdrawable switchgear, comprising a switchgear body (1), wherein the switchgear body (1) is provided with a plurality of drawers (2), characterized in that: The switch cabinet body (1) is provided with a pressure relief port (1a), and the pressure relief port (1a) is arranged on the side of the switch cabinet body (1). The switch cabinet body (1) is equipped with a pressure relief plate (4) that can close the pressure relief port (1a). The upper part of the pressure relief plate (4) is connected to the switch cabinet body (1) by nylon screws (3), and the lower part of the pressure relief plate (4) is connected to the switch cabinet body (1) by metal screws (6). The switch cabinet body (1) is also connected with an auxiliary screw (8). A connecting washer (7) is passed through the auxiliary screw (8). The connecting washer (7) is connected to one end of a steel wire rope (5), and the other end of the steel wire rope (5) is connected to the lower part of the pressure relief plate (4).
2. A low-voltage withdrawable switchgear according to claim 1, characterized in that, The pressure relief plate (4) has a connecting hole (4a) on the upper part that is smaller at the top and larger at the bottom, which is used to cooperate with the nylon screw (3).
3. A low-voltage withdrawable switchgear according to claim 1, characterized in that, The pressure relief plate (4) has a circular connecting hole (4b) at the bottom that cooperates with the metal screw (6).
4. A low-voltage withdrawable switchgear according to claim 1, characterized in that, The connecting gasket (7) and one end of the wire rope (5) are connected by welding, and the other end of the wire rope (5) is connected to the lower part of the pressure relief plate (4) by welding.