Large-current low-voltage switch cabinet top frame with anti-vortex function

Abstract

The utility model discloses a kind of large-current low-voltage switch cabinet top frames of anti-eddy current in the technical field of low-voltage complete power distribution cabinet, including a pair of main beams, between the front end of main beam and between the rear end respectively connect a side beam, between the middle part of main beam beam connect a middle beam, the top of main beam, side beam and middle beam are encapsulated with two cover plates, and gap is left between cover plate. Two main beams, two side beams and a middle beam are assembled into an integral frame, so that the original cabinet top closed loop is divided into two separate non-closed loops, to block eddy current path, and reduce permeability and eddy current generation, improve the reliability and energy efficiency of switch cabinet.

Description

Technical Field

[0001] This utility model relates to a top frame of a high-current low-voltage switchgear with anti-eddy current in the field of low-voltage complete switchgear technology. Background Technology

[0002] High-current low-voltage switchgear is a type of complete low-voltage power distribution equipment. It is a key power distribution device in industrial, commercial, and new energy sectors, characterized by high current carrying capacity, strong heat dissipation, eddy current resistance, and high reliability. It is widely used in high-load applications such as data centers, metallurgy, chemical industry, and rail transportation. With the rapid development of industrial, commercial, and new energy sectors, the capacity demand of power systems is constantly increasing, leading to the increasingly widespread application of high-current switchgear in low-voltage power distribution systems. However, the strong electromagnetic field and eddy currents generated by high currents create a closed conductive loop at the top of the switchgear, reducing its reliability and energy efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a top frame for a high-current low-voltage switchgear that prevents eddy currents, thus preventing the formation of a closed conductive loop at the top, blocking eddy current paths, reducing magnetic permeability and eddy current generation, and improving the reliability and energy efficiency of the switchgear.

[0004] To achieve the above objectives, this utility model provides a top frame for a high-current low-voltage switchgear with eddy current prevention, including a pair of main crossbeams, a side crossbeam connected between the front and rear ends of the main crossbeams, and a middle crossbeam connected between the middle parts of the main crossbeams. The tops of the main crossbeams, side crossbeams, and middle crossbeams are encapsulated with two cover plates, with a gap between the cover plates.

[0005] Compared with the prior art, the beneficial effect of this utility model is that by assembling two main crossbeams, two side crossbeams and one middle crossbeam into an integral frame, the closed loop at the top of the original cabinet is divided into two separate non-closed loops to block eddy current paths, and the magnetic permeability and eddy current generation are reduced, thereby improving the reliability and energy efficiency of the switch cabinet.

[0006] As a further improvement of this utility model, the main crossbeam includes a main rectangular sheet metal frame, the bottom surface of the main rectangular sheet metal frame is hollowed out, the short side of the main rectangular sheet metal frame is machined with ear plates, the ear plates are provided with mounting holes, the top of the main rectangular sheet metal frame is provided with a row of mounting holes, and the front, middle and rear parts of a long side of the main rectangular sheet metal frame are provided with mounting holes.

[0007] In this way, the rectangular sheet metal frame is screwed into the mounting holes on the ear plate and the mounting holes on the top G-shaped crossbeam of the switch cabinet by the lifting ring, thereby fixing the main crossbeam to the top G-shaped crossbeam of the switch cabinet.

[0008] As a further improvement of this utility model, the side beam includes a side rectangular sheet metal frame, the short side of the side rectangular sheet metal frame is provided with mounting holes, the top of the side rectangular sheet metal frame is provided with a row of mounting holes, and the bottom of the long side of the side rectangular sheet metal frame is provided with an extension mounting plate, which is provided with mounting holes.

[0009] In this way, the side crossbeam is fixedly connected to the main crossbeam by screwing screws into the mounting holes on its short side and the mounting holes on the long side of the main crossbeam. The side crossbeam is also fixedly connected by screwing screws into the mounting holes on its extension mounting plate and the mounting holes on the top G-shaped crossbeam.

[0010] As a further improvement of this utility model, the middle crossbeam includes a middle rectangular sheet metal frame, the short side of the middle rectangular sheet metal frame is provided with mounting holes, and the top of the middle rectangular sheet metal frame is provided with two rows of mounting holes.

[0011] In this way, the middle crossbeam is fixedly connected to the main crossbeam by screwing screws into the mounting holes on its short side and the mounting holes on the long side of the main crossbeam.

[0012] As a further improvement of this utility model, the middle crossbeam and the main crossbeam are made of stainless steel, and the cover plate and the side crossbeams are made of aluminum-zinc coated plate.

[0013] In this way, the middle and main crossbeams can effectively block or weaken the formation path of eddy currents, enhance the overall fastening stability of the low-voltage switchgear, and suppress eddy currents can not only improve equipment reliability, but also optimize operating efficiency and extend the service life of the low-voltage switchgear. Furthermore, the use of aluminum-zinc coated plates for the cover plate and side crossbeams can further reduce costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is an exploded view of the present invention.

[0016] Figure 3 This is a schematic diagram of the main crossbeam of this utility model.

[0017] Figure 4 This is a schematic diagram of the crossbeam structure of this utility model.

[0018] Figure 5 This is a schematic diagram of the structure of the crossbeam of this utility model.

[0019] The components include: 1. Cover plate; 2. Cabinet body; 3. Side beams; 4. Lifting lugs; 5. Middle beams; 6. Main beams; 7. Mounting holes; 8. Ear plates; 9. Main rectangular sheet metal frame; 10. Side rectangular sheet metal frame; 11. Extension mounting plate; and 12. Middle rectangular sheet metal frame. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings: like Figure 1-5 The top frame of a high-current low-voltage switchgear with eddy current protection shown includes a pair of main crossbeams 6. A side crossbeam 3 is connected between the front end and the rear end of the main crossbeams 6 respectively. A middle crossbeam 5 is connected between the middle parts of the main crossbeams 6. The top of the main crossbeams 6, the side crossbeams 3 and the middle crossbeam 5 are encapsulated with two cover plates 1, with a gap between the cover plates 1.

[0021] The main crossbeam 6 includes a main rectangular sheet metal frame 9. The bottom surface of the main rectangular sheet metal frame 9 is hollowed out. The short side of the main rectangular sheet metal frame 9 is machined with ear plates 8. Mounting holes 7 are opened on the ear plates 8. A row of mounting holes 7 is opened on the top of the main rectangular sheet metal frame 9. Mounting holes 7 are opened at the front, middle and rear of a long side of the main rectangular sheet metal frame 9.

[0022] The side beam 3 includes a side rectangular sheet metal frame 10. The short side of the side rectangular sheet metal frame 10 is provided with mounting holes 7. The top of the side rectangular sheet metal frame 10 is provided with a row of mounting holes 7. The bottom of the long side of the side rectangular sheet metal frame 10 is provided with an extension mounting plate 11, and the extension mounting plate 11 is provided with mounting holes 7.

[0023] The central crossbeam 5 includes a central rectangular sheet metal frame 12. Mounting holes 7 are provided on the short side of the central rectangular sheet metal frame 12, and two rows of mounting holes 7 are provided on the top of the central rectangular sheet metal frame 12. The central crossbeam 5 and the main crossbeam 6 are made of stainless steel, while the cover plate 1 and the side crossbeams 3 are made of aluminum-zinc coated sheet.

[0024] In this utility model, two stainless steel main crossbeams 6 are added to the top left and right sides of the original cabinet 2, two wide aluminum-zinc coated side crossbeams 3 are added to the top front and back sides of the original cabinet 2, a stainless steel middle crossbeam 5 is added in the middle of the main crossbeams 6, and finally the aluminum-zinc coated cover plate 1 is installed.

[0025] Using the lugs 4 and the mounting holes 7 on the ear plates 8 on the short side of the main crossbeam 6, the stainless steel main crossbeams 6 on the left and right sides are fixed to the mounting holes 7 on the front and rear G-type profiles of the cabinet 2 frame. Then, the two aluminum-zinc coated side crossbeams 3 are fixed to the two stainless steel main crossbeams 6 and the original front and rear G-type profiles of the cabinet 2 frame with screws. Finally, the middle stainless steel crossbeam 5 is fixed to the middle of the stainless steel main crossbeam 6 with screws. Through this structural form, the original closed top frame of the cabinet 2 is divided into two parts with front and rear sections.

[0026] By screwing screws into the mounting holes 7 on the top of the main crossbeam 6, the middle crossbeam 5, and the side crossbeam 3, the front and rear cover plates 1 are installed on top of these three components. Sufficient gaps are left between the cover plates 1 at the stainless steel middle crossbeam 5 to prevent the formation of a closed conductive circuit at the top, thus blocking eddy current paths. Furthermore, the main crossbeams 6 and the middle crossbeam 5 are both made of stainless steel, reducing magnetic permeability and eddy current generation, thereby improving the reliability and energy efficiency of the switchgear. This significantly enhances the anti-eddy current measures of high-current low-voltage switchgear, making it more stable, safe, and reliable.

[0027] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed herein, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. A top frame for a high-current low-voltage switchgear with eddy current protection, characterized in that: It includes a pair of main crossbeams, with a side crossbeam connecting the front and rear ends of the main crossbeams respectively, and a middle crossbeam connecting the middle of the main crossbeams. The top of the main crossbeams, side crossbeams and middle crossbeams are encapsulated with two cover plates, with a gap between the cover plates. The main crossbeam includes a main rectangular sheet metal frame, the bottom surface of which is hollowed out, ear plates are machined on the short side of the main rectangular sheet metal frame, mounting holes are opened on the ear plates, a row of mounting holes is opened on the top of the main rectangular sheet metal frame, and mounting holes are opened at the front, middle and rear of one long side of the main rectangular sheet metal frame. The middle crossbeam includes a middle rectangular sheet metal frame, with mounting holes on the short side of the middle rectangular sheet metal frame and two rows of mounting holes on the top of the middle rectangular sheet metal frame.

2. The anti-vortex large current low voltage switch cabinet top frame according to claim 1, characterized in that: The side beam includes a side rectangular sheet metal frame. The short side of the side rectangular sheet metal frame has mounting holes, and the top of the side rectangular sheet metal frame has a row of mounting holes. The bottom of the long side of the side rectangular sheet metal frame is machined with an extension mounting plate, and the extension mounting plate has mounting holes.

3. The anti-vortex large current low voltage switch cabinet top frame according to claim 2, characterized in that: The middle and main crossbeams are made of stainless steel, while the cover plate and side crossbeams are made of aluminum-zinc coated steel.

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