Low voltage switchgear drawer unit anti-arc mechanism

Abstract

The utility model relates to low -voltage switchgear drawer type unit technical field, concretely is low -voltage switchgear drawer type unit anti -electric arc mechanism, including drawer unit, the panel is installed to the drawer unit one section, the top hinged joint of drawer unit has insulating baffle, and the bottom one end both sides of insulating baffle are installed to the ejection assembly. The improved anti -electric arc mechanism, the top of drawer unit is installed with insulating baffle, so that staff still can carry out effective anti -electric arc work when drawing, and in the process of drawing, insulating baffle can be slowly bounced up, and the staff does not need to manually lift insulating baffle, and by being equipped with insulating board in the inside four around of drawer unit, so that effectively protect the internal electronic component, can carry out effective arc extinguishing work to electric arc through anti -arc assembly when drawing contact releases, thereby further increase the safety of staff operation.

Description

Technical Field

[0001] This utility model relates to the technical field of drawer-type units in low-voltage switchgear, specifically to an anti-arc mechanism for drawer-type units in low-voltage switchgear. Background Technology

[0002] Low-voltage switchgear drawer-type units are widely used in low-voltage power distribution systems. Their drawer-type design allows for easy insertion, removal, maintenance, and inspection, offering excellent flexibility and maintainability. These units typically contain electrical components such as circuit breakers, relays, and contactors, ensuring the safe and stable operation of the power system. In low-voltage switchgear drawer-type units, the arc-extinguishing mechanism ensures that the arc can be quickly extinguished or isolated in the event of an electric arc, preventing damage and enhancing the safety and reliability of the switchgear.

[0003] During the design process of this utility model, the following problems were discovered in the existing technology:

[0004] Common arc protection mechanisms may not be installed between drawer units. When a drawer unit is pulled out, it can cause an arc with another drawer unit, which can damage the internal electronic components, affecting their lifespan and increasing the risk to workers. Utility Model Content

[0005] The purpose of this utility model is to provide an anti-arc mechanism for drawer-type units of low-voltage switchgear, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an anti-arc mechanism for a drawer-type unit of a low-voltage switchgear, comprising a drawer unit, a panel installed on one end of the drawer unit, an insulating baffle hinged to the top of the drawer unit, ejection components installed on both sides of the bottom end of the insulating baffle, a cooling fan installed on the other end of the drawer unit, contacts installed on both sides of the other end of the drawer unit, and anti-arc components installed on both sides of the other end of the drawer unit between the cooling fan and the contacts.

[0007] The ejection assembly includes a first connecting bracket installed on both sides of one end of the drawer unit. A first connecting rod is installed on the inner side of the first connecting bracket, a spring is installed on the inner side of the first connecting rod, a second connecting rod is installed on one end of the spring, and a second connecting bracket is installed on the outer side of one end of the second connecting rod.

[0008] The anti-arc component includes a frame installed on both sides of the other end of the drawer unit, located between the cooling fan and the contact. Side plates are evenly installed on the inner side of the frame, and horizontal plates are evenly installed between the side plates.

[0009] More preferably, the inner perimeter of the drawer unit is equipped with an insulating plate.

[0010] More preferably, both the drawer unit and the insulating plate have slots at one end.

[0011] More preferably, a filter screen is installed at one end of the cooling fan.

[0012] More preferably, the spring and the second connecting rod form an elastic structure, and a groove is provided on the inner side of one end of the first connecting rod.

[0013] More preferably, the second connecting frame and the insulating baffle are linked together by the cooperation of the first connecting rod, the spring and the second connecting rod.

[0014] More preferably, the frame is made of ceramic material, and the exterior of the side plates and cross plates are coated with an aluminum oxide coating.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] An insulating baffle is installed on the top of the drawer unit, allowing for effective arc protection during the pulling process. The baffle slowly pops up during the pulling process, eliminating the need for manual lifting and reducing labor costs while maintaining arc protection. Furthermore, insulating plates are installed around the inside of the drawer unit to effectively protect internal electronic components, preventing damage and malfunction. Additionally, the arc-extinguishing component effectively extinguishes any arc when the drawer contacts are released, further enhancing worker safety. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the exploded structure of the ejection assembly of this utility model;

[0020] Figure 4 This is a schematic diagram of the anti-arc component structure of this utility model.

[0021] In the diagram: 1. Drawer unit; 2. Panel; 3. Insulating baffle; 4. Ejection assembly; 401. First connecting frame; 402. First connecting rod; 403. Spring; 404. Second connecting rod; 405. Second connecting frame; 5. Cooling fan; 6. Contact; 7. Anti-arc assembly; 701. Frame; 702. Side panel; 703. Horizontal plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1 to 4 This utility model provides a technical solution: an anti-arc mechanism for a drawer-type unit of a low-voltage switchgear, including a drawer unit 1, a panel 2 installed on one end of the drawer unit 1, an insulating baffle 3 connected to the top of the drawer unit 1 by a hinge, ejection components 4 installed on both sides of the bottom end of the insulating baffle 3, a cooling fan 5 installed on the other end of the drawer unit 1, contacts 6 installed on both sides of the other end of the drawer unit 1, and anti-arc components 7 installed on both sides of the other end of the drawer unit 1 between the cooling fan 5 and the contacts 6.

[0024] The ejection assembly 4 includes a first connecting bracket 401 installed on both sides of one end of the drawer unit 1. A first connecting rod 402 is installed on the inner side of the first connecting bracket 401. A spring 403 is installed on the inner side of the first connecting rod 402. A second connecting rod 404 is installed on one end of the spring 403. A second connecting bracket 405 is installed on the outer side of one end of the second connecting rod 404.

[0025] The anti-arc component 7 includes a frame 701 installed on both sides of the other end of the drawer unit 1 between the cooling fan 5 and the contact 6. Side plates 702 are evenly installed on the inner side of the frame 701, and horizontal plates 703 are evenly installed between the side plates 702.

[0026] In this embodiment, as Figure 1 and Figure 2 As shown, insulating plates are installed on all four sides of the inner side of drawer unit 1.

[0027] In this embodiment, as Figure 1 and Figure 2 As shown, both the drawer unit 1 and the insulating plate have slots at one end.

[0028] In this embodiment, as Figure 1 and Figure 2 As shown, a filter screen is installed at one end of the cooling fan 5.

[0029] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the spring 403 and the second connecting rod 404 form an elastic structure, and a groove is provided on the inner side of one end of the first connecting rod 402.

[0030] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the second connecting frame 405 and the insulating baffle 3 form a linkage structure through the cooperation of the first connecting rod 402, the spring 403 and the second connecting rod 404.

[0031] In this embodiment, as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the frame 701 is made of ceramic material, and the exterior of the side plate 702 and the cross plate 703 are coated with an aluminum oxide coating.

[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the arc-prevention mechanism of the drawer-type unit of the low-voltage switchgear operates as follows:

[0033] First, when the operator pulls out drawer unit 1, the top side of the insulating baffle 3 moves away from the upper drawer unit 1. At this time, the spring 403 undergoes elastic deformation, causing the second connecting rod 404 to slowly disengage from the groove. Furthermore, the angle between the first connecting rod 402 and the second connecting rod 404 changes, causing the insulating baffle 3 to be slowly lifted. When drawer unit 1 is fully pulled out, the insulating baffle 3 is lifted to its highest point. During the lifting process, the insulating baffle 3 remains insulated from the upper drawer unit 1, effectively preventing electric arcing. During the pulling out of drawer unit 1, the contact 6 also releases. If an electric arc is generated, the arc will enter the frame 701. The electric arc is elongated and cooled in the gap between the side panel 702 and the horizontal panel 703, thus achieving arc extinguishing. The ceramic material gives the frame 701 excellent high temperature resistance, high strength, and insulation. The alumina coating gives the side panel 702 and the horizontal panel 703 a certain degree of high temperature resistance. At the same time, the cooling fan 5 can further dissipate the temperature, thereby effectively increasing the anti-arc effect and increasing the safety of the workers. During the entire drawer operation, the insulating plate inside the drawer unit 1 can also effectively insulate the internal electronic components, preventing damage and increasing the service life of the electronic components and the safety during use.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An arc-proof mechanism for a drawer-type unit of a low-voltage switchgear, comprising a drawer unit (1), characterized in that: A panel (2) is installed on one end of the drawer unit (1). An insulating baffle (3) is connected to the top of the drawer unit (1) by a hinge. An ejection assembly (4) is installed on both sides of the bottom end of the insulating baffle (3). A cooling fan (5) is installed on the other end of the drawer unit (1). A contact (6) is installed on both sides of the other end of the drawer unit (1). An anti-arc assembly (7) is installed on both sides of the other end of the drawer unit (1) between the cooling fan (5) and the contact (6). The ejection assembly (4) includes a first connecting frame (401) installed on both sides of one end of the drawer unit (1), a first connecting rod (402) installed on the inner side of the first connecting frame (401), a spring (403) installed on the inner side of the first connecting rod (402), a second connecting rod (404) installed on one end of the spring (403), and a second connecting frame (405) installed on the outer side of one end of the second connecting rod (404). The anti-arc component (7) includes a frame (701) installed on both sides of the other end of the drawer unit (1) between the cooling fan (5) and the contact (6). Side plates (702) are evenly installed on the inner side of the frame (701), and horizontal plates (703) are evenly installed between the side plates (702).

2. The anti-arc mechanism for a drawer-type unit of a low-voltage switchgear according to claim 1, characterized in that: Insulating plates are installed on all four sides of the inner side of the drawer unit (1).

3. The anti-arc mechanism for a drawer-type unit of a low-voltage switchgear according to claim 1, characterized in that: Both the drawer unit (1) and the insulating plate have slots at one end.

4. The anti-arc mechanism for a drawer-type unit of a low-voltage switchgear according to claim 1, characterized in that: A filter screen is installed at one end of the cooling fan (5).

5. The anti-arc mechanism for a drawer-type unit of a low-voltage switchgear according to claim 1, characterized in that: The spring (403) and the second connecting rod (404) form an elastic structure, and a groove is provided on the inner side of one end of the first connecting rod (402).

6. The anti-arc mechanism for a drawer-type unit of a low-voltage switchgear according to claim 1, characterized in that: The second connecting frame (405) and the insulating baffle (3) are linked together by the cooperation of the first connecting rod (402), the spring (403) and the second connecting rod (404).

7. The anti-arc mechanism for a drawer-type unit of a low-voltage switchgear according to claim 1, characterized in that: The frame (701) is made of ceramic material, and the exterior of the side plate (702) and the cross plate (703) are coated with an aluminum oxide coating.

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