Frequency conversion cabinet

Abstract

The utility model provides a frequency conversion cabinet, which relates to the technical field of electronic information and comprises a power module cabinet and a control module cabinet, the control module cabinet is arranged on one side of the power module cabinet, the interior of the power module cabinet is divided into three layers, the lower layer of the interior of the power module cabinet is a lower-layer air inlet area, and the lower-layer air inlet area is a lower-layer air outlet area. The middle layer in the power module cabinet is a middle-layer power module area, the upper layer in the power module cabinet is an upper-layer air outlet area, and the lower-layer air inlet area, the middle-layer power module area and the upper-layer air outlet area are communicated. According to the utility model, the power modules are arranged in a concentrated manner and independent air ducts are designed to reduce cost, dustproof and inductor arrangement are reasonable to avoid heat interference, design is simplified, efficiency is improved, a complete heat radiation channel is formed, stable operation of the frequency conversion cabinet is ensured, service life is prolonged, and overall cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic information technical field, concretely is a frequency conversion cabinet. BACKGROUND

[0002] In the traditional transmission frequency conversion cabinet layout design stage, designers often face many challenges. Due to lack of a scientific and reasonable layout scheme, the partition in the frequency conversion cabinet box is often unreasonable. This unreasonableness leads to dust accumulation in the box, heat interference between electrical components, which seriously affects the use effect and service life of electrical components.

[0003] Specifically, in the traditional frequency conversion cabinet design, the power module is usually scattered, which not only is not conducive to the layout of independent heat dissipation air duct, but also reduces the heat dissipation efficiency. At the same time, the relative position between the power modules also lacks rationality, leading to insufficient smoothness of the main power flow. In order to connect each scattered power module, complex conductive row is needed, which not only increases the design workload, but also increases the material cost.

[0004] With the continuous change of market demand, the power demand of transmission frequency conversion cabinet is also increasing. The increase of power modules and the addition of other auxiliary electricals make the traditional layout design more difficult. The design time is gradually extended, and the design of conductive row becomes more and more complex, and the cost also rises.

[0005] In addition, the arrangement of inductance in the traditional frequency conversion cabinet also lacks rationality. The inductance is often co-located with other electrical components, or is separately enclosed in a space. This arrangement not only affects the heat dissipation effect of inductance, but also has a great impact on the total heat in the box.

[0006] In summary, the traditional transmission frequency conversion cabinet layout design has many shortcomings, which cannot meet the requirements of modern industry for high efficiency, energy saving and environmental protection. CONTENT OF THE UTILITY MODEL

[0007] In view of the shortcomings of the prior art, the utility model provides a frequency conversion cabinet, which solves the technical problems of heat interference, low heat dissipation efficiency, complex and high cost of conductive row design, and unreasonable inductance arrangement.

[0008] To achieve the above purpose, the utility model realizes the following technical scheme:

[0009] A variable frequency cabinet, comprising a power module cabinet and a control module cabinet, the control module cabinet is arranged on one side of the power module cabinet, characterized in that: the inside of the power module cabinet is divided into three layers, the lower layer of the inside of the power module cabinet is a lower air inlet area, the middle layer of the inside of the power module cabinet is a middle power module area, and the upper layer of the inside of the power module cabinet is an upper air outlet area, and the lower air inlet area, the middle power module area and the upper air outlet area are communicated.

[0010] Preferably, the rear side of the power module cabinet and the control module cabinet is provided with an exhaust cabinet, the inside of the exhaust cabinet is provided with an inductance area, an exhaust area and a high-voltage area side by side, the upper side of the inside of the exhaust area is communicated with the upper side of the inside of the upper air outlet area, the upper side of the inside of the inductance area is communicated with the upper air outlet area, the lower side of the inside of the inductance area is communicated with the lower air inlet area, the upper side of the inside of the inductance area is communicated with the upper side of the inside of the exhaust area, and the lower side of the rear side of the exhaust area is provided with an exhaust port.

[0011] Preferably, the exhaust area is located between the high-voltage area and the inductance area, the upper side of the inside of the control module cabinet is communicated with the upper side of the inside of the high-voltage area, the lower side of the inside of the control module cabinet is communicated with the lower side of the inside of the high-voltage area, the upper side of the inside of the high-voltage area is communicated with the upper side of the inside of the exhaust area, and the bottom of the front side of the control module cabinet is also provided with a lower air inlet area.

[0012] Preferably, the outside of the exhaust port is provided with an exhaust fan.

[0013] Preferably, the middle power module area of the inside of the power module cabinet is provided with a power module, the inside of the power module cabinet is provided with a busbar positive busbar and a busbar negative busbar, the power module is provided with a power module output copper bar, and the busbar positive busbar and the busbar negative busbar are respectively connected with the positive input end and the negative input end of the power module.

[0014] Preferably, the power module comprises a lifting power module, a left wheel brake module, a DCDC module, a right wheel brake module, a steering module and a ventilator module.

[0015] Preferably, the lifting power module, the left wheel brake module, the DCDC module, the right wheel brake module, the steering module and the ventilator module are arranged in sequence.

[0016] Preferably, the lower air inlet area and the middle power module area are isolated by a lower-middle partition plate arranged on the inside of the power module cabinet, the middle power module area and the upper air outlet area are isolated by an upper-middle partition plate arranged on the inside of the power module cabinet, and the middle part of the lower-middle partition plate and the upper-middle partition plate is transparent.

[0017] Preferably, hard flexible material with points is arranged between the bottom of the lifting power module, the left wheel brake module, the DCDC module, the right wheel brake module, the steering module and the ventilator module and the lower middle layer partition.

[0018] Preferably, dustproof cotton is arranged between the top of the lifting power module, the left wheel brake module, the DCDC module, the right wheel brake module, the steering module and the ventilator module and the upper middle layer partition.

[0019] The utility model provides a frequency conversion cabinet, which has the following beneficial effects:

[0020] Optimized layout and partition: through reasonable layout and partition, the high-heat power module is separated from other low-heat electrical components, so that the heat does not affect each other, thereby protecting the use effect and service life of each electrical component. Meanwhile, the partition design improves the heat dissipation efficiency of the whole frequency conversion cabinet.

[0021] Improved heat dissipation efficiency and dustproof grade: the power module is arranged in a centralized manner and is designed with a common independent air duct, which greatly improves the heat dissipation efficiency and reduces the material cost. In addition, the hard flexible material with points and the dustproof cotton are used for sealing, which improves the dustproof grade of the independent air duct and further protects the power module and the whole frequency conversion cabinet.

[0022] Optimized inductance arrangement: the inductance is arranged in an independent air duct which is independent of the inside and connected with the outside, so that the heat can be taken out of the box through the air duct, thereby avoiding the heat interference between the inductance and other electrical components and improving the heat dissipation efficiency of the inductance and the box.

[0023] Simplified design and reduced cost: the power module is arranged in a centralized manner, so that the main power flow is smoother, the complicated conductive row design is avoided, and the time and material cost for designing the conductive row are greatly reduced. The design also shortens the time required for designing the control cabinet and improves the work efficiency.

[0024] Form a complete heat dissipation channel: through the ingenious design, the lower air inlet area, the middle power module area, the upper air outlet area, the high-pressure area, the inductance area and the air exhaust area in the air exhaust cabinet are independent and connected with each other, forming an efficient heat dissipation system. The system ensures that the cold air enters from the front lower end and the hot air is discharged from the rear lower end, thereby ensuring the stable operation of the whole frequency conversion cabinet. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a front view structural schematic diagram of the utility model;

[0026] Figure 2 It is a rear view structural schematic diagram of the utility model;

[0027] Figure 3It is the front view partial structure schematic view of the utility model;

[0028] Figure 4 It is the left view structure schematic view of the utility model;

[0029] Figure 5 It is the rear view partial structure schematic view of the utility model;

[0030] Figure 6 It is the front view inside structure schematic view of the utility model;

[0031] Figure 7 It is the A part enlarged structure schematic view of the utility model Figure 3 ;

[0032] Figure 8 It is the B part enlarged structure schematic view of the utility model Figure 3 ;

[0033] Figure 9 It is the high pressure area heat dissipation direction schematic view of the utility model embodiment 2;

[0034] In the drawing: 1, power module cabinet;2, control module cabinet;3, lower layer air inlet area;4, lower middle layer partition;5, middle layer power module area;6, upper middle layer partition;7, upper layer air outlet area;8, power module;9, left wheel brake module;10, DCDC module;11, right wheel brake module;12, steering module;13, air extractor;14, high pressure area;15, air outlet;16, inductance area;17, hard belt point flexible material;18, dustproof cotton;19, air extractor;20, busbar;21, busbar;22, power module;23, power module output copper bar;24, exhaust cabinet;25, exhaust area. DETAILED DESCRIPTION

[0035] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0036] Embodiment 1

[0037] As Figure 1As shown in the drawings, a variable frequency cabinet includes a power module cabinet 1 and a control module cabinet 2, the control module cabinet 1 is arranged on one side of the power module cabinet 2, characterized in that: the inside of the power module cabinet 1 is divided into three layers, the lower layer of the inside of the power module cabinet 1 is a lower air inlet area 3, the middle layer of the inside of the power module cabinet 1 is a middle power module area 5, and the upper layer of the inside of the power module cabinet 1 is an upper air outlet area 7, the lower air inlet area 3, the middle power module area 5 and the upper air outlet area 7 are communicated. The lower air inlet area 3, the middle power module area 5 and the upper air outlet area 7 are communicated through ingenious design, forming an efficient heat dissipation system. The lower air inlet area 3 is responsible for introducing cold air, the middle power module area 5 is the working area of the power module 22, and the upper air outlet area 7 is responsible for discharging hot air, thereby ensuring the stable operation of the entire variable frequency cabinet.

[0038] As shown in Figure 1 , Figure 2 , Figure 4 and Figure 5 , the rear side of the power module cabinet 1 and the control module cabinet 2 is provided with an exhaust cabinet 24, the inside of the exhaust cabinet is provided with an inductance area 16, an exhaust area 25 and a high-voltage area 14 side by side, the upper air outlet area 7 is communicated with the inner upper part of the exhaust area 25, the inner upper part of the inductance area 16 is communicated with the upper air outlet area 7, the inner lower part of the inductance area 16 is communicated with the lower air inlet area 3, the inner upper part of the inductance area 16 is communicated with the inner upper part of the exhaust area 25, and the rear lower part of the exhaust area 25 is provided with an exhaust port 15. The rear side of the power module cabinet 1 and the control module cabinet 2 is additionally provided with an exhaust cabinet 24, which further improves the heat dissipation effect. The inside of the exhaust cabinet is provided with an inductance area 16, an exhaust area 25 and a high-voltage area 14 side by side, the three areas are independent of each other and do not interfere with each other. Through design, the inner upper part of the inductance area 16 is communicated with the upper air outlet area 7, and the inner lower part is communicated with the lower air inlet area 3, so that the position of the inductance area 16 forms an independent heat dissipation channel. At the same time, the inner upper part of the inductance area 16 is also communicated with the inner upper part of the exhaust area 25, ensuring the smooth discharge of heat.

[0039] As shown in Figure 3 , Figure 4 and Figure 5As shown, the outer side of the air outlet 15 is provided with an exhaust fan 19. Under the action of the exhaust fan 19, the cold air first passes through the lower air inlet area 3, then passes through the air duct of the middle power module area 5, becomes hot air passing through the upper air outlet area 7, and then is discharged through the rear fan opening 15 to the outside of the frequency conversion cabinet. In this way, the cold air enters from the front lower end, and the hot air is discharged from the rear lower end. The inductance shared power module 22 has a separate air duct; under the action of the exhaust fan 19, the cold air first passes through the lower air inlet area 3, then passes through the inductance area 16, and the hot air is collected to the upper layer and enters the exhaust area 25, and then the hot air is discharged through the rear fan opening 15 to the outside of the frequency conversion cabinet. In this way, the cold air enters from the front lower end, and the hot air is discharged from the rear lower end.

[0040] As shown in Figure 6 , the middle power module area 5 inside the power module cabinet 1 is provided with a power module 22, the inside of the power module cabinet 1 is provided with a busbar positive bus 20 and a busbar negative bus 21, and the power module 22 is provided with a power module output copper bar 23. The busbar positive bus 20 and the busbar negative bus 21 are respectively connected to the input positive terminal and the input negative terminal of the power module 22. The power module 22 is turned on according to the following path: first, the positive external input power supply is directly connected to the conductive bar of the busbar positive bus 20 through a cable, and is directly connected to the input positive terminal of each power module 22; the negative external input power supply is directly connected to the busbar negative bus 21 through a cable, and is directly connected to the input negative terminal of each power module 22, and then is connected to the output copper bar 23 of each power module, and finally is connected to the output copper bar output through a cable. Such a layout can make the copper bar arrangement more concentrated, with the busbar positive bus 20 and the busbar negative bus 21 as the main trunk, connected to each module respectively. At the same time, because the high-power module is directly connected to the busbar positive bus 20 and the busbar negative bus 21 through the conductive bar, the main power flow is smoother, the complex conductive bar design is reduced, and the design time and the cost of the conductive bar are saved.

[0041] As shown in Figure 1 , the power module 22 includes a lifting power module 8, a left wheel brake module 9, a DCDC module 10, a right wheel brake module 11, a steering module 12 and a ventilator module 13. The lifting power module 8, the left wheel brake module 9, the DCDC module 10, the right wheel brake module 11, the steering module 12 and the ventilator module 13 are sequentially arranged. These modules are sequentially arranged in the middle power module area 5, forming a compact and efficient working area. Each module bears different functions and cooperates together to ensure the normal operation of the frequency conversion cabinet.

[0042] As shown in Figure 1 , Figure 7 , and Figure 8As shown, the lower air inlet area 3 and the middle power module area 5 are isolated by the lower-middle partition plate 4 arranged at the lower-middle layer inside the power module cabinet 1, the middle power module area 5 and the upper air outlet area 7 are isolated by the upper-middle partition plate 6 arranged at the upper-middle layer inside the power module cabinet 1, and the middle positions of the lower-middle partition plate 4 and the upper-middle partition plate 6 are transparent, so that the lower air inlet area 3, the middle power module area 5 and the upper air outlet area 7 are independent of each other.

[0043] As shown in FIG. 1, the power module cabinet 1 comprises a lower air inlet area 3, a middle power module area 5, an upper air outlet area 7, a high-voltage area 14, an inductance area 16, a control module cabinet 2 and an exhaust area 25. Figure 1 and Figure 7 As shown, the lifting power module 8, the left wheel brake module 9, the DCDC module 10, the right wheel brake module 11, the steering module 12 and the ventilator module 13 are arranged with the hard-point flexible material 17 between the lower-middle partition plate 4. The hard-point flexible material 17 can absorb the gap between the power module 6 and the lower partition plate 3, and increase the sealing performance of the lower end air inlet of the power module 22.

[0044] As shown in FIG. 1, the power module cabinet 1 comprises a lower air inlet area 3, a middle power module area 5, an upper air outlet area 7, a high-voltage area 14, an inductance area 16, a control module cabinet 2 and an exhaust area 25. Figure 1 and Figure 8 As shown, the top of the lifting power module 8, the left wheel brake module 9, the DCDC module 10, the right wheel brake module 11, the steering module 12 and the ventilator module 13 is arranged with the dustproof cotton 18 between the upper-middle partition plate 6. The dustproof cotton 18 can absorb the error between the lower-middle partition plate 4 and the upper-middle partition plate 6, and increase the sealing performance of the upper end air outlet of the power module 22.

[0045] Embodiment 2

[0046] As shown in FIG. 1, the power module cabinet 1 comprises a lower air inlet area 3, a middle power module area 5, an upper air outlet area 7, a high-voltage area 14, an inductance area 16, a control module cabinet 2 and an exhaust area 25. Figure 9 As shown in FIG. 2, on the basis of the embodiment 1, the exhaust area 25 is located between the high-voltage area 14 and the inductance area 16, the inside upper side of the control module cabinet 2 is communicated with the inside upper side of the high-voltage area 14, the inside lower side of the control module cabinet 2 is communicated with the inside lower side of the high-voltage area 14, the inside upper side of the high-voltage area 14 is communicated with the inside upper side of the exhaust area 25, and the front bottom of the control module cabinet 2 is also provided with the lower air inlet area 3. The inside of the control module cabinet 2 is communicated with the inside of the high-voltage area 14 and the inside of the exhaust area 25, forming a complete heat dissipation channel. Under the action of the exhaust fan 19, the cold air first enters the inside of the control module cabinet 2 through the lower air inlet area 3 of the control module cabinet 2, then flows upward to heat the control module in the control module cabinet 2, then enters the high-voltage area 14 through the inside upper side of the control module cabinet 2, and then becomes hot air after a certain heat dissipation to the high-voltage area 14, and then enters the exhaust area 25, and then is exhausted through the fan port 15. The other structures are the same as those of the embodiment 1. The high-voltage area 14 and the control module cabinet 2 share a heat dissipation channel, further improving the heat dissipation performance and integration of the utility model.

[0047] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A variable frequency cabinet comprising a power module cabinet (1) and a control module cabinet (2), the control module cabinet (2) being arranged on one side of the power module cabinet (1), characterized in that: The inside of the power module cabinet (1) is divided into three layers, the lower layer of the inside of the power module cabinet (1) is a lower layer air inlet area (3), the middle layer of the inside of the power module cabinet (1) is a middle layer power module area (5), and the upper layer of the inside of the power module cabinet (1) is an upper layer air outlet area (7), the lower layer air inlet area (3), the middle layer power module area (5) and the upper layer air outlet area (7) are communicated.

2. The frequency conversion cabinet of claim 1, wherein: The rear side of the power module cabinet (1) and the control module cabinet (2) is provided with an exhaust cabinet (24), the inside of the exhaust cabinet is provided with an inductance area (16), an exhaust area (25) and a high voltage area (14) side by side, the upper side of the inside of the upper layer air outlet area (7) and the exhaust area (25) are communicated, the lower side of the inside of the inductance area (16) and the lower layer air inlet area (3) are communicated, the upper side of the inside of the inductance area (16) and the upper side of the inside of the exhaust area (25) are communicated, and the rear lower side of the exhaust area (25) is provided with an exhaust port (15).

3. A frequency changer cabinet according to claim 2, wherein: The exhaust area (25) is located between the high voltage area (14) and the inductance area (16), the upper side of the inside of the control module cabinet (2) and the upper side of the inside of the high voltage area (14) are communicated, the lower side of the inside of the control module cabinet (2) and the lower side of the inside of the high voltage area (14) are communicated, the upper side of the inside of the high voltage area (14) and the upper side of the inside of the exhaust area (25) are communicated, and the front bottom of the control module cabinet (2) is also provided with a lower layer air inlet area (3).

4. The frequency changer cabinet of claim 2 wherein: The outside of the exhaust port (15) is provided with an exhaust fan (19).

5. A frequency changer cabinet according to any one of claims 1 to 4, wherein: The middle layer power module area (5) of the inside of the power module cabinet (1) is provided with a power module (22), the inside of the power module cabinet (1) is provided with a positive busbar (20) and a negative busbar (21), the power module (22) is provided with a power module output copper bar (23), and the positive input end and the negative input end of the power module (22) are connected with the positive busbar (20) and the negative busbar (21) respectively.

6. A frequency changer cabinet according to claim 5, wherein: The power module (22) comprises a lifting power module (8), a left wheel brake module (9), a DCDC module (10), a right wheel brake module (11), a steering module (12) and a ventilator module (13).

7. A frequency changer cabinet according to claim 6, wherein: The lifting power module (8), the left wheel brake module (9), the DCDC module (10), the right wheel brake module (11), the steering module (12) and the ventilator module (13) are sequentially arranged.

8. The frequency changer cabinet of claim 6 wherein: The lower layer air inlet area (3) and the middle layer power module area (5) are isolated by a lower-middle layer partition plate (4) arranged in the lower-middle layer of the inside of the power module cabinet (1), the middle layer power module area (5) and the upper layer air outlet area (7) are isolated by an upper-middle layer partition plate (6) arranged in the upper-middle layer of the inside of the power module cabinet (1), and the middle positions of the lower-middle layer partition plate (4) and the upper-middle layer partition plate (6) are transparent.

9. A frequency changer cabinet according to claim 8, wherein: Hardness with point flexible material (17) is arranged between the lifting power module (8), left wheel brake module (9), DCDC module (10), right wheel brake module (11), steering module (12) and ventilator module (13) and lower middle layer partition (4).

10. The frequency changer cabinet of claim 8 wherein: Dustproof cotton (18) is arranged between the top of the lifting power module (8), left wheel brake module (9), DCDC module (10), right wheel brake module (11), steering module (12) and ventilator module (13) and upper middle layer partition (6).

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