CN203150958U - High-voltage switchgear with heat radiation structure - Google Patents

Abstract

The utility model discloses a high-voltage switch cabinet with a heat dissipation structure, which comprises a cabinet body. A transformer room is arranged at the rear lower part of the cabinet body. The transformer room is equipped with a rear lower door panel. There is a protective cover, a hollow airflow channel is formed between the rear lower door panel and the protective cover, an air inlet connecting the airflow channel and the outside atmosphere is provided on the rear lower door panel, and an airflow channel is connected to the cabinet body on the protective cover The air outlets, inlets and outlets of the interior space are located at different levels. Through the above technical scheme, while ensuring that the switchgear reaches the required protection level, the heat in the cabinet can be effectively discharged outside the cabinet, and at the same time, moisture can be prevented from entering the cabinet, so as to solve the problems of moisture resistance and heat dissipation.

Description

A high-voltage switchgear with heat dissipation structure

technical field

The utility model belongs to a switchgear for power supply or distribution, and relates to a switch cabinet, in particular to a high-voltage switch cabinet with a heat dissipation structure.

Background technique

In the power system, the application of switchgear is extremely extensive. Since the primary components in the switchgear usually operate in a sealed cabinet, the heat generated is difficult to dissipate outside the cabinet, which will easily lead to an increase in the temperature inside the cabinet and affect the normal operation of the components in the cabinet. If the temperature exceeds a certain limit, It will burn components and cause accidents.

Existing switch cabinets usually have ventilation holes on the top and bottom plates of the cabinet to dissipate heat, but the ventilation holes on the bottom plate will easily cause moisture to enter the cabinet and cannot prevent moisture; Moisture-proof, but if a fault occurs inside the cabinet, it is easy to cause injury to personnel or equipment outside the cabinet, and the arc is easy to flow out from the ventilation holes of the side plate, which cannot meet the protection level required by the switch cabinet.

Utility model content

The main purpose of the utility model is to provide a high-voltage switchgear with a heat dissipation structure, which can effectively solve the problems of moisture resistance and heat dissipation of the switchgear while ensuring that the switchgear reaches the required protection level.

The utility model adopts the following technical solutions:

A high-voltage switch cabinet with a heat dissipation structure, including a cabinet body, a transformer room is arranged at the lower rear part of the cabinet body, a rear lower door panel is equipped in the transformer room, a pressure relief port is arranged on the top of the transformer room, and a protective cover is provided on the inner side of the rear lower door panel , A hollow airflow channel is formed between the rear lower door panel and the protective cover, the rear lower door panel is provided with an air inlet connecting the airflow channel and the outside atmosphere, and the protective cover is provided with an air outlet connecting the airflow channel and the interior space of the cabinet , the air inlet and outlet are located at different levels.

Preferably, the position of the air outlet is higher than that of the air inlet.

Specifically, shutters are arranged on the air inlet.

Specifically, the inner side of the louver is provided with a mesh panel.

Specifically, the air outlet is provided with a strip-shaped ventilation hole.

Specifically, a fan is provided at the bottom of the transformer room.

Specifically, a heat dissipation pressure relief cover is provided on the pressure relief port.

According to the heat dissipation method of the switchgear described in the above technical solution, after the hot air inside the cabinet rises, it is discharged out of the cabinet through the pressure relief port, and the cold air from the outside enters the airflow channel through the air inlet, and flows through the airflow channel with a certain height difference , and then enter the interior of the cabinet through the air outlet, and gas convection is formed between the interior of the cabinet and the outside atmosphere.

From the above description of the utility model, it can be seen that compared with the prior art, the utility model can effectively discharge the heat inside the switchgear to the outside of the switchgear and prevent moisture Enter the cabinet to solve the problems of moisture resistance and heat dissipation.

Specifically, the air inlet is provided with louvers, the inner side of the louvers is provided with mesh panels, and the air outlet is provided with strip-shaped ventilation holes. The opening is facing downwards, and the mesh plate is installed to further prevent moisture from entering the cabinet. At the same time, it can effectively prevent the damage to personnel or equipment outside the cabinet due to faults in the cabinet, and ensure that the switch cabinet reaches the required protection level.

Specifically, when a large-capacity transformer is installed in the cabinet, the heat generated is large, and the bottom of the transformer room is provided with a fan, and the pressure relief port is provided with a heat-dissipating pressure relief cover, which can enhance the heat dissipation effect.

The utility model is suitable for indoor high-voltage switch cabinets, especially for indoor metal armored removable (KYN) high-voltage switch cabinets.

Description of drawings

Fig. 1 is a schematic structural view of a specific embodiment of the utility model.

Fig. 2 is a partially enlarged view of a specific embodiment of the present invention.

Fig. 3 is a right view of a partially enlarged part of a specific embodiment of the present invention.

Detailed ways

The utility model will be further described below through specific embodiments.

A high-voltage switch cabinet with a heat dissipation structure as shown in Figure 1, Figure 2 and Figure 3, including a cabinet body, a transformer room 1 is arranged at the rear and lower part of the cabinet body, the transformer room 1 is equipped with a rear lower door panel 2, and the transformer room 1 A pressure relief port 3 is provided on the top, a protective cover 4 is provided on the inner side of the rear lower door panel 2, a hollow air flow channel 5 is formed between the rear lower door panel 2 and the protective cover 4, and the rear lower door panel 2 is provided with a communication air flow channel 5 and The air inlet 21 of the external atmosphere, the protective cover plate 4 is provided with the air outlet 41 connecting the airflow passage 5 and the cabinet interior space, the air inlet 21 and the air outlet 41 are located at different levels, and the position of the air outlet 41 is higher than Air inlet 21. Through the above technical scheme, while ensuring that the switchgear reaches the required protection level, the heat in the cabinet can be effectively discharged outside the cabinet, and at the same time, moisture can be prevented from entering the cabinet, so as to solve the problems of moisture resistance and heat dissipation.

Specifically, the air inlet 21 is provided with a louver 211, the inner side of the louver 211 is provided with a mesh plate 212, the air outlet 41 is provided with a strip-shaped ventilation hole 411, the bottom of the cabinet is provided with a fan 6, and the pressure relief port 3 A heat-dissipating pressure relief cover 31 is provided on it. The shutters 211 on the air inlet 21 and the strip-shaped ventilation holes 411 on the air outlet 41 are located at different levels, and the position of the strip-shaped ventilation holes 411 on the air outlet 41 is higher than the shutters 211 on the air inlet 21, With this structure, the positions of the louvers 211 and the strip-shaped ventilation holes 411 are designed to be dislocated up and down, and the opening of the louvers 211 is facing downwards, and a mesh plate 212 is installed on the inside of the louvers 211, which can further prevent moisture from entering the cabinet. , At the same time, it can effectively prevent the damage to personnel or equipment outside the cabinet due to faults in the cabinet, and can ensure that the switch cabinet reaches the required protection level.

The inner side of the rear lower door panel 2 is provided with a protective cover 4, and the protective cover 4 is detachable, so that the staff can remove the protective cover 4 after opening the rear lower door. and the net plate 212 for regular cleaning or maintenance.

Specifically, the switch cabinet includes a transformer room 1, a main bus room 7, an instrument room 8, and a handcart room 9, and the transformer room 1 is equipped with a dry-type transformer 11.

Specifically, the heat dissipation method of the switchgear: when the switchgear is working, the dry-type transformer 11 generates heat, which makes the temperature of the air in the transformer room 1 rise, as shown by the arrow in Figure 1 and Figure 2, after the hot air rises, The cabinet is discharged through the pressure relief port 3 and the heat dissipation pressure relief cover 31, and the external cold air enters the airflow channel 5 through the louvers 211 and the mesh plate 212 on the air inlet 21, flows through the airflow channel 5 with a certain height difference, and then passes through The strip-shaped ventilation hole 411 on the air outlet 41 enters the inside of the cabinet body, and gas convection is formed between the inside of the cabinet body and the outside atmosphere. When the heat generated by the transformer is large, the fan 6 installed on the lower side of the transformer can be turned on. The fan 6 blows the hot air in the transformer room 1 to rise rapidly, speeding up the exchange and convection of the hot air inside the cabinet and the cold air outside the atmosphere, and enhancing heat dissipation. Effect.

The technical solutions of the above-mentioned specific embodiments are preferably applicable to 10kV indoor metal armored removable (KYN) switch cabinets with dry-type transformers installed in the cabinets.

The above is only a specific embodiment of the present utility model, but the design concept of the present utility model is not limited thereto, any non-substantial modification of the utility model by using this concept should be an act of violating the protection scope of the present utility model .

Claims (7)

1. A high-voltage switch cabinet with a heat dissipation structure, including a cabinet body, a transformer room is arranged at the lower part of the cabinet body, the transformer room is equipped with a rear lower door panel, and the top of the transformer room is provided with a pressure relief port, characterized in that: the rear There is a protective cover on the inner side of the lower door panel, and a hollow airflow channel is formed between the rear lower door panel and the protective cover. The rear lower door panel is provided with an air inlet connecting the airflow channel and the outside atmosphere, and the protective cover is provided with a communication airflow channel. The air inlet and air outlet are located at different levels from the air outlet of the cabinet interior space. 2. A high-voltage switchgear with heat dissipation structure according to claim 1, characterized in that: the position of the air outlet is higher than that of the air inlet. 3. A high-voltage switchgear with heat dissipation structure according to claim 1, characterized in that: the air inlet is provided with louvers. 4. A high-voltage switchgear with heat dissipation structure according to claim 3, characterized in that: the inner side of the louver is provided with a mesh plate. 5. A high-voltage switchgear with heat dissipation structure according to claim 1, characterized in that: the air outlet is provided with a strip-shaped ventilation hole. 6. A high-voltage switchgear with heat dissipation structure according to claim 1 or 2 or 3 or 4 or 5, characterized in that: a fan is provided at the bottom of the transformer room. 7. A high-voltage switchgear with heat dissipation structure according to claim 1 or 2 or 3 or 4 or 5, characterized in that: the pressure relief port is provided with a heat dissipation pressure relief cover.

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