CN211790326U - An AC low-voltage power distribution cabinet - Google Patents

Abstract

The utility model relates to an AC low-voltage power distribution cabinet, comprising a cabinet body and heat dissipation holes opened on the cabinet body. The cabinet body includes an outer layer and an inner layer, a gap is arranged between the outer layer and the inner layer, and the heat dissipation holes are opened in the outer layer. At the bottom, the top of the inner wall of the inner layer is provided with a ventilation hole communicating with the inside of the cabinet. The utility model has the effects of good waterproof performance and safe use.

Description

An AC low-voltage power distribution cabinet

technical field

The utility model relates to the technical field of electric equipment, in particular to an AC low-voltage power distribution cabinet.

Background technique

The power distribution cabinet refers to the functions of on-off, control or protection in the power generation, transmission, distribution, power conversion and consumption of the power system. The power distribution cabinet is a low-voltage power distribution device that assembles switchgear, measuring instruments, protective appliances and auxiliary equipment in a closed or semi-closed metal cabinet or on the screen according to the electrical wiring requirements. During normal operation, the circuit can be switched on or off by means of manual or automatic switches. In the event of failure or abnormal operation, the circuit can be cut off or alarmed by means of protective appliances. Various parameters in operation can be displayed by measuring instruments, and some electrical parameters can be adjusted to prompt or send signals for deviations from the normal working state.

The AC low-voltage power distribution cabinet is suitable for the power distribution system of power plants, substations, factories and mines and other power users with AC 50Hz, rated working voltage 380V, and rated working current up to 31-50A. It is used as power conversion for power, lighting and power distribution equipment. for distribution and control. The voltage in the power distribution cabinet is high. If water enters, it will leak electricity, which will cause danger, and will cause large-scale short-circuit damage to the circuit, resulting in huge economic losses.

In the Chinese utility model patent with the publication number CN202127177U, an AC low-voltage power distribution cabinet is disclosed, which includes a cabinet body and a cabinet door. The cabinet door is connected to the frame by a living hinge, and a W The upper part of the cabinet is provided with cooling holes and the lower part is provided with air suction holes.

The above-mentioned prior art scheme has the following defects: it does not have waterproof performance, and in rainy days, rainwater or water vapor easily enters the cabinet through the heat dissipation holes and the air suction holes opened on the cabinet, so that the humidity in the cabinet increases, resulting in The electronic components inside the cabinet are damaged due to water ingress and short circuit.

Utility model content

Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide an AC low-voltage power distribution cabinet, which has the advantages of good waterproof performance and safe use.

The above-mentioned utility model purpose of the present utility model is achieved through the following technical solutions:

An AC low-voltage power distribution cabinet includes a cabinet body and heat dissipation holes opened on the cabinet body, the cabinet body includes an outer layer and an inner layer, a gap is formed between the outer layer and the inner layer, and the heat dissipation holes are opened on the outer layer. The bottom of the layer, the top of the inner wall of the inner layer is provided with a ventilation hole communicating with the inside of the cabinet.

By adopting the above technical solution, the cabinet body is arranged as an inner layer and an outer layer, there is a gap between the inner layer and the outer layer, and the heat dissipation hole is arranged at the bottom of the outer layer. At this time, the rainwater or water vapor entering the cabinet will be blocked between the inner layer and the outer layer. Under the partition of the inner layer, the rainwater and water vapor cannot directly enter the inside of the cabinet, so as to avoid causing damage to the cabinet. The internal electronic components are damaged by water ingress and short circuit, and the power distribution cabinet has good waterproof performance and is safe to use.

In a preferred example of the present invention, it can be further configured as follows: a water guiding groove is arranged at the bottom between the outer layer and the inner layer, and a drainage hole is arranged in the water guiding groove, and the drainage hole communicates with the outside of the cabinet. .

By adopting the above technical solution, the rainwater and water vapor blocked by the inner layer are collected and collected through the guide of the water guide, and finally discharged out of the cabinet through the drainage hole, ensuring good waterproof performance and safe use of the power distribution cabinet.

In a preferred example of the present invention, it can be further configured that: the heat dissipation holes are provided with eaves and the openings of the heat dissipation holes face downward.

By adopting the above technical solution, the heat dissipation holes are provided with eaves and the openings of the heat dissipation holes face downwards. In rainy days, the eaves can effectively block rainwater, prevent rainwater from directly entering the cabinet, and ensure that the power distribution cabinet has good waterproof performance and is safe to use.

In a preferred example of the present invention, it can be further configured that: a fan for dehumidification and heat dissipation is arranged in the cabinet.

By adopting the above technical solution, the fan can not only play the role of heat dissipation, but also can dehumidify in time, so as to ensure good waterproof performance and safe use of the power distribution cabinet.

In a preferred example of the present invention, it can be further configured that: the top of the cabinet is provided with a rain shield for shielding the rain.

By adopting the above technical solution, the rain shield at the top of the cabinet can cover the rain, and in rainy days, the rainwater hits the rain shield, so as to prevent the rainwater from hitting the cabinet directly, and prevent the rainwater from entering the cabinet along the heat dissipation hole, so as to ensure that the matching The electric cabinet has good waterproof performance and is safe to use.

In a preferred example of the present invention, it can be further configured as follows: the edge of the rain shield is provided with a surrounding plate, and the rain shield is provided with a water outlet pipe.

By adopting the above technical solution, the edge of the flashing board is provided with a coaming plate, and rainwater can be collected on the flashing board and discharged to the surface through the water outlet pipe to ensure good waterproof performance and safe use of the power distribution cabinet.

In a preferred example of the present invention, a hydrophobic layer is provided on the side wall of the inner layer close to the outer layer.

By adopting the above technical solution, the hydrophobic layer can ensure that the rainwater will fall off automatically when it falls on the cabinet body, instead of being attached to the cabinet body, so as to ensure that the power distribution cabinet has good waterproof performance and is safe to use.

In a preferred example of the present invention, it can be further configured that: the side wall of the cabinet body is inlaid with a glass observation window.

By adopting the above technical solution, the glass observation window facilitates the staff to observe the situation in the cabinet, and ensures the safe use of the power distribution cabinet.

To sum up, the present utility model includes at least one of the following beneficial technical effects:

Rainwater or water vapor will be blocked between the inner layer and the outer layer. Under the partition of the inner layer, rainwater and water vapor cannot directly enter the inside of the cabinet, so as to avoid water ingress of the electronic components inside the cabinet. Short-circuit damage, the power distribution cabinet has good waterproof performance and is safe to use;

The rainwater and water vapor blocked by the inner layer are guided by the gutter, collected and collected, and finally discharged out of the cabinet through the drain hole;

The flashing board can cover the rain. In rainy days, the rainwater hits the flashing board to prevent the rainwater from hitting the cabinet directly and prevent the rainwater from entering the cabinet along the heat dissipation hole.

Description of drawings

Fig. 1 is the overall schematic diagram of this embodiment;

Fig. 2 is a sectional view along line A-A in Fig. 1;

FIG. 3 is a cross-sectional view taken along line B-B in FIG. 1 .

Reference signs: 1. Cabinet body; 2. Outer layer; 3. Inner layer; 4. Water guide; 5. Drainage hole; 6. Heat dissipation hole; 7. Fan; , outlet pipe; 11, glass observation window; 12, ventilation holes.

Detailed ways

The present utility model will be described in further detail below in conjunction with the accompanying drawings.

Referring to FIG. 1 , it is an AC low-voltage power distribution cabinet disclosed by the utility model, which includes a cabinet body 1 , and the cabinet body 1 is in the shape of a rectangular parallelepiped frame.

1 and 2 , the cabinet 1 includes an outer layer 2 and an inner layer 3 , the outer layer 2 and the inner layer 3 are integrally formed, and there is a gap between the outer layer 2 and the inner layer 3 . A hydrophobic layer (not marked in the figure) is provided on the side wall of the inner layer 3 close to the outer layer 2, and the hydrophobic layer is a super-hydrophobic paint. The top of the inner wall of the inner layer 3 is provided with a ventilation hole 12 , the ventilation hole 12 is rectangular, and the ventilation hole 12 communicates with the interior of the cabinet 1 . Two water guiding grooves 4 are opened at the bottom between the outer layer 2 and the inner layer 3, and the water guiding grooves 4 are arranged obliquely. A drain hole 5 is vertically opened at the intersection of the lowest ends of the two water guide grooves 4 , the drain hole 5 is cylindrical, and the drain hole 5 communicates with the outside of the cabinet 1 .

Referring to FIGS. 2 and 3 , the side walls of the cabinet 1 are provided with rows of heat dissipation holes 6 . The heat dissipation holes 6 are located at the bottom of the outer layer 2 . The heat dissipation holes 6 are integrally formed with eaves (not marked in the figure), and the heat dissipation holes 6 opening facing down. A fan 7 is welded and fixed inside the cabinet 1 , and the fan 7 is used for dehumidification and heat dissipation inside the cabinet 1 .

The top of the cabinet body 1 is welded and fixed with a flashing board 8 for rain shielding, the flashing board 8 is rectangular, and the area of the flashing board 8 is larger than that of the top of the cabinet body 1, so that the flashing board 8 can completely cover the cabinet body. 1 to cover the top. A shroud 9 is integrally formed on the edge of the flashing board 8, so that the cross section of the flashing board 8 is in the shape of a "concave". The bottom of the flashing board 8 is welded and fixed with a water outlet pipe 10, the water outlet pipe 10 is cylindrical, and the axial direction of the water outlet pipe 10 is perpendicular to the bottom wall of the flashing board 8, so that the accumulated water in the flashing board 8 can be discharged to the surface in time .

The side wall of the cabinet body 1 is inlaid with a glass observation window 11, and the glass observation window 11 is convenient for staff to observe the situation in the cabinet body 1, thereby ensuring good waterproof performance and safe use of the power distribution cabinet.

The implementation principle of this embodiment is as follows: part of the rainwater enters the cabinet body 1 through the heat dissipation holes 6 in rainy days. At this time, the rainwater will be blocked by the inner layer 3 and cannot directly enter the interior of the cabinet body 1. The hole 5 is discharged to the outside of the cabinet 1; the flashing board 8 arranged on the top of the cabinet 1 plays the role of shielding the rain, and the rainwater collected in the flashing board 8 is discharged to the surface along the water outlet pipe 10 in time to ensure the safety of the power distribution cabinet. Good waterproof performance and safe to use.

The embodiments of this specific embodiment are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention, therefore: all equivalent changes made according to the structure, shape and principle of the present invention are It should be covered within the protection scope of the present invention.

Claims (7)

1. The utility model provides an AC low-voltage power distribution cabinet, includes louvre (6) of seting up on the cabinet body (1) and the cabinet body (1), its characterized in that: the cabinet body (1) includes skin (2) and inlayer (3), the clearance has between skin (2) and inlayer (3), the bottom of skin (2) is seted up in louvre (6), the inner wall top of inlayer (3) is provided with ventilation hole (12) with the inside intercommunication of the cabinet body (1), bottom between skin (2) and inlayer (3) is provided with guiding gutter (4), be provided with wash port (5) in guiding gutter (4), wash port (5) and the outside intercommunication of the cabinet body (1).

2. Ac low-voltage distribution cabinet according to claim 1, characterized in that: the heat dissipation holes (6) are provided with eave, and the openings of the heat dissipation holes (6) face downwards.

3. Ac low-voltage distribution cabinet according to claim 1, characterized in that: a fan (7) used for dehumidification and heat dissipation is arranged in the cabinet body (1).

4. Ac low-voltage distribution cabinet according to claim 1, characterized in that: the top of the cabinet body (1) is provided with a rain shielding plate (8) for shielding rain.

5. AC low-voltage distribution cabinet according to claim 4, characterized in that: a coaming (9) is arranged on the edge of the rain shielding plate (8), and a water outlet pipe (10) is arranged on the rain shielding plate (8).

6. Ac low-voltage distribution cabinet according to claim 1, characterized in that: and a hydrophobic layer is arranged on the side wall of the inner layer (3) close to the outer layer (2).

7. Ac low-voltage distribution cabinet according to claim 1, characterized in that: the side wall of the cabinet body (1) is embedded with a glass observation window (11).

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