A frequency converter cabinet

Abstract

The present invention relates to a frequency converter cabinet, which comprises a supporting outer frame located inside the frequency converter cabinet, a supporting platform connected to the supporting outer frame, and a ventilation mechanism arranged on the frequency converter cabinet, wherein a fixing frame for installing an inverter component is plugged on the supporting platform; a slide groove is arranged on the supporting platform, and a raised sliding block which cooperates with the slide groove on the supporting platform is arranged on the fixing frame of the inverter component; the beneficial effects are as follows: the inverter component and the circuit busbar are convenient to disassemble, the heat dissipation of the inverter component and the circuit busbar which cooperates with the inverter component is more uniform, the heat dissipation effect is good, the frequency converter works stably, the work efficiency is improved, the air outlet effect is good, adjacent air outlets do not interfere with each other, and the service life of the electric control components in the frequency converter cabinet is improved.

Description

Technical Field

[0001] The invention belongs to the field of high-voltage frequency converters, and in particular relates to a frequency converter cabinet. Background Art

[0002] The frequency converter is an energy control device that converts industrial frequency power into another frequency by using the on-off function of power semiconductor devices. The electronic control components in the frequency converter include inverter components and circuit busbars that cooperate with the inverter components. The electronic control components realize various functions when the frequency converter is running, which is the guarantee for the stable, reliable and safe operation of the frequency converter.

[0003] Traditional inverter cabinets are generally provided with receiving plates for placing inverter components. In the existing technology, there are problems of inconvenient connection of inverter components. The assembly of inverter components and circuit busbars is time-consuming and laborious, and there are also problems of inconvenience in disassembly of inverter components and circuit busbars.

[0004] The inverter cabinet is equipped with an inverter assembly and a circuit busbar that cooperates with the inverter assembly. In the prior art, the inverter assembly and the circuit busbar that cooperates with the inverter assembly have the problem of uneven heat dissipation, which leads to poor heat dissipation effect after long-term operation, unstable operation of the inverter, and affected work efficiency.

[0005] The top of the traditional inverter cabinet is provided with an air outlet structure. The traditional air outlet structure has poor air outlet effect, and adjacent air outlets interfere with each other, resulting in poor air outlet effect, affecting the ventilation efficiency inside the inverter cabinet and reducing the service life of the electronic control components in the inverter cabinet.

[0006] In view of this, this patent application is proposed. Summary of the invention

[0007] In view of the above technical problems, the present invention provides a frequency converter cabinet.

[0008] In order to achieve the above object, the technical solution adopted by the present invention is:

[0009] A frequency converter cabinet comprises an outer support frame located inside the frequency converter cabinet, a support platform connected to the outer support frame, and a ventilation mechanism arranged on the frequency converter cabinet, wherein the support platform is plugged in for installing an inverter component fixing frame; a slide groove is provided on the support platform, and a raised slider which cooperates with the slide groove on the support platform is provided on the inverter component fixing frame; the ventilation mechanism comprises a ventilation duct and a fan, and the fan is connected to the ventilation duct inside the frequency converter cabinet, and a plurality of air inlets are provided on the ventilation duct; a back plate is provided at the rear of the inverter component fixing frame, and the back plate separates the inverter component and the ventilation duct on both sides, and a plurality of ventilation openings are provided on the back plate, and the air inlet of the ventilation duct is located behind the ventilation openings.

[0010] The upper and lower surfaces of the support platform are both provided with slide grooves, and both ends of the support platform are provided with mounting feet, and the mounting feet are provided with threaded holes.

[0011] The upper and lower surfaces of the inverter assembly fixing frame are both provided with protruding sliding blocks that cooperate with the sliding grooves.

[0012] The slide groove comprises a guiding slide groove and a positioning slide groove, and the positioning slide groove and the guiding slide groove intersect with each other.

[0013] A dust-proof air guide cover with a closed top is installed on the periphery of the fan. The dust-proof air guide cover is a rectangular parallelepiped structure. In addition to the closed top, the opposite side of the fan is also a closed structure.

[0014] A windward grille is provided on one side of the fixing frame of the inverter assembly.

[0015] Two longitudinal inner support columns are respectively arranged on the two side facades supporting the outer frame; transverse bottom beams are respectively arranged between the two inner support columns on the front side and the two inner support columns on the rear side, and an inner top plate is arranged between the four inner support columns; a plurality of longitudinal mounting beams are arranged between the front transverse bottom beam and the inner top plate, a back plate is arranged between the rear transverse bottom beam and the inner top plate, and a plurality of support platforms for mounting inverter components are arranged between the longitudinal mounting beams and the back plate.

[0016] The positioning slide grooves are provided in plurality and are parallel to each other.

[0017] The upper and lower surfaces of the inverter assembly fixing frame are provided with raised sliding blocks matching with a plurality of positioning sliding grooves.

[0018] The inverter assembly and the circuit busbar are installed on the inverter assembly fixing frame. The circuit busbar includes a large busbar and a small busbar. The large busbar is horizontally installed on the top of the supporting outer frame. The large busbar is provided with a downward expansion hole. The small busbar is vertically connected to the expansion hole of the large busbar. The number of small busbar expansions is 3-5.

[0019] Compared with the prior art, the advantages and positive effects of the present invention are:

[0020] The present invention provides a frequency converter cabinet, wherein the front and back sides of the support platform are symmetrically provided with guide slide grooves and positioning slide grooves, and the bottom and top sides of the inverter component fixing frame are provided with raised sliding blocks matched with the guide slide grooves and the positioning slide grooves, the raised sliding blocks first slide vertically into the guide slide grooves, and then after entering the positioning slide grooves for matching, the inverter component enters the assembly position and is assembled with the circuit busbar, which is convenient for the combined assembly of the two; the inverter component on the inverter component fixing frame and the circuit busbar on the back side are assembled by dual-purpose screws, which realizes simple assembly, reduces the problem of space occupied by assembly parts, and saves assembly space; by setting a plurality of groups of positioning slide grooves, one group of positioning slide grooves is connected to the middle position of the guide slide groove, and the other group of positioning slide grooves is connected to the tail of the guide slide groove, so as to ensure the stability of assembly; the distribution positions of the two groups of positioning slide grooves are parallel to each other, and the spacing between the two raised sliding blocks provided at the bottom and top sides of the inverter component fixing frame is equal to the spacing between the two groups of positioning slide grooves, so that the raised sliding blocks are convenient for clamping in the positioning slide grooves, thereby improving the efficiency and stability of assembly;

[0021] Multiple fan outlets are respectively provided with dust-proof air guide covers, and baffles are provided on the sides of adjacent dust-proof air guide covers to ensure that the air outlets between the dust-proof air guide covers do not interfere with each other, and the air outlet effect is good and the heat dissipation effect is high; the vents at the rear end of the windward grille are connected to the air inlet of the ventilation duct to ensure that the air inlet and outlet channels are unobstructed, improve the air inlet and outlet efficiency, and facilitate the timely discharge of the heat generated inside the inverter cabinet. The windward grilles do not interfere with each other, which improves the air outlet effect and ensures the stability of air inlet and outlet;

[0022] By arranging inner support columns, transverse bottom beams, inner top plates and support platforms, the structure of the inverter is made more compact, the space utilization efficiency is higher, and it is convenient to arrange ventilation and cooling devices in other spaces, so that the safe operation of the product is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is an overall structural diagram of a frequency converter cabinet of the present invention;

[0024] Figure 2 A schematic diagram of the structure supporting the outer frame;

[0025] Figure 3 It is a structural schematic diagram of the inverter component fixing frame;

[0026] Figure 4 for Figure 1 The structural diagram of the middle A part;

[0027] Figure 5 is a structural schematic diagram of the support platform;

[0028] Figure 6 It is a structural schematic diagram of the windward grille;

[0029] Figure 7 It is a schematic diagram of the structure of the dust-proof air guide cover;

[0030] Figure 8 It is a schematic diagram of the connection structure of the large busbar and the small busbar;

[0031] In the above figures: inverter cabinet 1, support platform 2, inverter component fixing frame 3, slide groove 4, raised slider 5, back plate 6, vent 7, supporting outer frame 8, ventilation duct 9, fan 10, guide slide groove 11, positioning slide groove 12, dust-proof wind guide cover 13, inner support column 14, transverse bottom beam 15, windward grille 16, inner top plate 17, longitudinal mounting beam 18, inverter component 19, circuit busbar 20, large busbar 21 and small busbar 22, mounting foot 23, air inlet 24. DETAILED DESCRIPTION

[0032] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that elements, structures, and features in one embodiment may also be beneficially combined in other embodiments without further description.

[0033] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "inside", "outside", "upper", "lower", "front", "rear", etc. are based on the positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0034] A frequency converter cabinet, which includes a supporting outer frame 8 located inside the frequency converter cabinet 1, a supporting platform 2 connected to the supporting outer frame 8, and a ventilation mechanism arranged on the frequency converter cabinet 1, the supporting platform 2 is plugged with an inverter component fixing frame 3 for installing; the supporting platform 2 is provided with a slide groove 4, the inverter component fixing frame 3 is provided with a raised slider 5 that cooperates with the slide groove 4 on the supporting platform 2, the ventilation mechanism includes a ventilation duct 9 and a fan 10, the fan 10 is connected to the ventilation duct 9 inside the frequency converter cabinet 1, and the ventilation duct 9 is provided with a plurality of air inlets 24; a back plate 6 is provided at the rear of the inverter component fixing frame 3, the back plate 6 separates the inverter component 19 and the ventilation duct 9 on both sides, a plurality of ventilation holes 7 are opened on the back plate 6, the air inlet 24 of the ventilation duct 9 is located behind the ventilation hole 7, the upper and lower surfaces of the supporting platform 2 are provided with slide grooves 4, the supporting Both ends of the platform 2 are provided with mounting feet 23, and threaded holes are provided on the mounting feet 23. The upper and lower surfaces of the inverter component fixing frame 3 are provided with raised sliders 5 that cooperate with the slide groove 4. The slide groove 4 includes a guide slide groove 11 and a positioning slide groove 12. The positioning slide groove 12 intersects with the guide slide groove 11. There are multiple positioning slide grooves 12 and they are parallel to each other. The upper and lower surfaces of the inverter component fixing frame 3 are provided with raised sliders 5 that match the multiple positioning slide grooves 12. A dust-proof wind guide cover 13 with a closed top is installed on the periphery of the fan 10. The dust-proof wind guide cover 13 is a rectangular structure. In addition to the top closure, the opposite side of the fan 10 is also a closed structure. A windward grille 16 is provided on one side of the inverter component fixing frame 3. The windward grille 16 is a hollow structure connected at the front and rear ends. The front end of the windward grille 16 is an air inlet channel, and the rear end of the windward grille 16 is a vent 7.

[0035] Among them, two longitudinal inner support columns 14 are respectively arranged on the two side facades supporting the outer frame 8; transverse bottom beams 15 are respectively arranged between the two front inner support columns 14 and the two rear inner support columns 14, and an inner top plate 17 is arranged between the four inner support columns; a plurality of longitudinal mounting beams 18 are arranged between the front transverse bottom beam 15 and the inner top plate 17, a back plate 6 is arranged between the rear transverse bottom beam 15 and the inner top plate 17, and a plurality of support platforms 2 for mounting inverter components are arranged between the longitudinal mounting beams 18 and the back plate 6.

[0036] Among them, the inverter component 19 and the circuit busbar 20 are installed on the inverter component fixing frame 3. The circuit busbar 20 includes a large busbar 21 and a small busbar 22. The large busbar 21 is horizontally installed on the top of the supporting outer frame 8. The large busbar 21 is provided with a downward expansion hole. The small busbar 22 is vertically connected to the expansion hole of the large busbar 21. The expansion number of the small busbar 22 is 3-5.

[0037] Working principle: During assembly and use, the guide slots 11 and the positioning slots 12 are symmetrically arranged on the front and back of the support platform 2, and the bottom and top of the inverter component fixing frame 3 are provided with raised sliders 5 that cooperate with the guide slots 11 and the positioning slots 12. The raised sliders 5 first slide vertically along the guide slots 11, and then after entering the positioning slots 12, the inverter component 19 enters the assembly position and is assembled with the circuit busbar 20. The circuit busbar 20 is located on the support outer frame 8 at a position opposite to the inverter component 19. The inverter component on the inverter component fixing frame 3 and the circuit busbar 20 on its back are assembled by dual-purpose screws, which makes assembly simple, reduces the problem of space occupied by assembly parts, and saves assembly space. By setting two groups of positioning slots 12, the first group of positioning slots 12 is fixed to the inverter component 19. The positioning slot 12 is connected to the middle position of the guide slot 11, and the second group of positioning slots 12 is connected to the tail of the guide slot 11, which ensures the stability of assembly; the distribution positions of the two groups of positioning slots 12 are parallel to each other, and the spacing between the two raised sliders 5 provided at the bottom and top of the inverter component fixing frame 3 is equal to the spacing between the two groups of positioning slots 12, which is convenient for the raised sliders 5 to be engaged in the positioning slots 12, thereby improving the efficiency and stability of assembly. A dustproof air guide cover 13 is provided on the outside of the fan 10. The dustproof air guide cover 13 is a cubic structure, and three of the four sides of the dustproof air guide cover 13 are hollow structures. A baffle is provided on the other side, and the baffle is provided on the side of the adjacent dustproof air guide cover 13 to ensure that the air outlet between the dustproof air guide covers 13 does not interfere with each other, and the air outlet effect is good and the heat dissipation effect is high;

[0038] A windward grille 16 is provided on one side of the inverter component fixing frame 3. The windward grille 16 is a hollow structure with front and rear ends connected. The front end of the windward grille 16 is an air inlet channel, and the rear end of the windward grille 16 is a vent 7. The fan 10 on the top of the inverter cabinet 1 is connected to the ventilation duct 9 inside the inverter cabinet 1, and a plurality of air inlets 24 are provided on the ventilation duct 9; a back plate 6 is provided at the rear of the inverter component fixing frame 3, and the back plate 6 separates the inverter component 19 and the ventilation duct 9 on both sides. A plurality of vents 7 are provided on the back plate 6, and the vent 7 at the rear end of the windward grille 16 is connected to the air inlet 24 of the ventilation duct 9 to ensure that the air inlet and outlet channels are unobstructed and the air inlet and outlet efficiency is improved. By providing the windward grille 16, it is convenient for the heat generated inside the inverter cabinet to be discharged in time, and the windward grilles 16 do not interfere with each other, thereby improving the air outlet effect.

[0039] The air passes through the hollow structure inside the windward grille 16, absorbs the heat generated by the inverter assembly 19 and the circuit busbar 20 on one side of the windward grille 16, and then enters the ventilation duct 9, and is discharged through the fan 10 on the top, thereby realizing the circulation of heat-dissipating air and improving the heat dissipation effect; each group of inverter assemblies and the circuit busbar 20 are respectively connected to the windward grille 16, thereby avoiding the mutual influence of the heat generated between adjacent inverter assemblies 19 and the circuit busbar 20, improving the heat dissipation effect of each group of inverter assemblies 19 and the circuit busbar 20, ensuring uniform heat dissipation, ensuring the stable operation of the inverter, and improving work efficiency.

[0040] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A frequency converter cabinet, characterized in that: The invention comprises a supporting outer frame (8) located inside a frequency converter cabinet (1), a supporting platform (2) connected to the supporting outer frame (8), and a ventilation mechanism arranged on the frequency converter cabinet (1); an inverter component fixing frame (3) is plugged and installed on the supporting platform (2); a slide groove (4) is arranged on the supporting platform (2); a raised sliding block (5) which cooperates with the slide groove (4) on the supporting platform (2) is arranged on the inverter component fixing frame (3); the ventilation mechanism comprises a ventilation duct (9), a fan (1 0), the fan (10) is connected to the ventilation duct (9) inside the inverter cabinet (1), and a plurality of air inlets (24) are arranged on the ventilation duct (9); a back plate (6) is arranged behind the inverter component fixing frame (3), and the back plate (6) separates the inverter component (19) installed on the inverter component fixing frame (3) and the ventilation duct (9) on both sides, and a plurality of ventilation holes (7) are opened on the back plate (6), and the air inlet (24) of the ventilation duct (9) is located behind the ventilation hole (7); The upper and lower surfaces of the inverter assembly fixing frame (3) are both provided with raised sliding blocks (5) that cooperate with the sliding grooves (4); The slide groove (4) comprises a guide slide groove (11) and a positioning slide groove (12), and the positioning slide groove (12) and the guide slide groove (11) intersect each other; The upper and lower surfaces of the support platform (2) are both provided with sliding grooves (4), and both ends of the support platform (2) are both provided with mounting feet (23), and the mounting feet (23) are provided with threaded holes.

2. The frequency converter cabinet according to claim 1, characterized in that: A dust-proof air guide cover (13) with a closed top is installed on the periphery of the fan (10). The dust-proof air guide cover (13) is a rectangular parallelepiped structure. In addition to being closed at the top, the opposite side of the fan (10) is also a closed structure.

3. The frequency converter cabinet according to claim 1, characterized in that: A windward grille (16) is provided on one side of the fixing frame (3) of the inverter assembly.

4. The frequency converter cabinet according to claim 1, characterized in that: Two longitudinal inner support columns (14) are respectively arranged on the two side elevations of the supporting outer frame (8); transverse bottom beams (15) are respectively arranged between the two inner support columns (14) on the front side and the two inner support columns (14) on the rear side, and an inner top plate (17) is arranged between the four inner support columns; a plurality of longitudinal mounting beams (18) are arranged between the front transverse bottom beam (15) and the inner top plate (17), a back plate (6) is arranged between the rear transverse bottom beam (15) and the inner top plate (17), and a plurality of support platforms (2) for mounting inverter components are arranged between the longitudinal mounting beams (18) and the back plate (6).

5. The frequency converter cabinet according to claim 1, characterized in that: The positioning slide grooves (12) are provided in plurality and are parallel to each other.

6. The frequency converter cabinet according to claim 5, characterized in that: The upper and lower surfaces of the inverter assembly fixing frame (3) are provided with raised sliding blocks (5) matching with a plurality of positioning sliding grooves (12).

7. The frequency converter cabinet according to claim 1, characterized in that: An inverter assembly (19) and a circuit busbar (20) are installed on an inverter assembly fixing frame (3). The circuit busbar (20) includes a large busbar (21) and a small busbar (22). The large busbar (21) is horizontally installed on the top of a supporting outer frame (8). The large busbar (21) is provided with a downward expansion hole. The small busbar (22) is vertically connected to the expansion hole of the large busbar (21). The number of expansions of the small busbars (22) is 3-5.

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