CN206976886U - A kind of high-current switch with automatic cooling function - Google Patents

Abstract

The utility model discloses a high-current switch cabinet with an automatic cooling function. The cabinet body of the current switch cabinet includes a main chamber and a front and lower chamber which are independent of each other. The main chamber is equipped with copper bars and contact boxes; It also includes a cross-flow cooling fan and a temperature detection component. The temperature detection component detects the surface temperature of the copper bar and the contact box. The front and lower chambers are provided with an air inlet along the side wall of the cabinet. The main chamber There is an air outlet opened along the top of the cabinet; the cross-flow cooling fan is arranged at the air inlet, guides the air along the horizontal direction, and enters the bottom of the main chamber along the bottom of the main chamber. The utility model provides a high-current switch cabinet with an automatic cooling function, realizes air circulation, and ensures efficient and stable heat dissipation in the switch cabinet.

Description

A high-current switchgear with automatic cooling function

technical field

The utility model relates to a high-current switch cabinet, in particular to a high-current switch cabinet with an automatic cooling function.

Background technique

With the rapid development of my country's industry, the social demand for electricity is growing rapidly. Moreover, due to the uneven distribution of electricity consumption in my country, several industrialized regions, such as the Yangtze River Delta, Pearl River Delta and Beijing-Tianjin-Hebei region, have a large population and a surge in the number of enterprises, posing new challenges to power supply. In the hot summer, both residential electricity consumption and industrial electricity consumption are at peak times, and high-current switchgears work under high-load conditions for a long time. As a result, the heat production of the switchgear increased significantly, and the temperature rise obviously exceeded the national industry standard, and even the switchgear exploded due to overheating, causing major fires or accidents. It will cause huge economic losses and grid maintenance costs every year.

In order to solve the problem of excessive temperature rise of components in the switch cabinet due to the closed space. At present, the effective way for various high-current switchgear manufacturers to solve this problem is to install induced draft fans and combine the control system to dissipate heat in the switchgear. When the current passing through the switchgear reaches a certain value, the induced draft fan is turned on to enhance convection and heat dissipation. This method can alleviate the heat dissipation problem to a large extent, but it will increase the maintenance frequency of the fan, unreasonable structural design, and often cause dust accumulation on the surface of the components in the cabinet.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a high-current switchgear with an automatic cooling function, which realizes air circulation and efficiently and stably ensures heat dissipation in the switchgear.

The technical scheme that the utility model solves its technical problem adopts is:

A high-current switch cabinet with automatic cooling function, the cabinet body of the current switch cabinet includes a main chamber and a front and lower chamber that are independent from each other, and the main chamber is equipped with copper bars and contact boxes; it also includes a cross-flow cooling fan And a temperature detection component, the temperature detection component detects the surface temperature of the copper bar and the contact box, the front lower chamber is provided with an air inlet along the side wall of the cabinet, and the main chamber is provided with an air inlet along the side wall of the cabinet. An air outlet at the top; the cross-flow cooling fan is arranged at the air inlet, guides the wind along the horizontal direction, and enters the bottom of the main chamber along the bottom of the main chamber;

The temperature detection component is connected to the cross-flow cooling fan, and when the surface temperature exceeds the threshold of the opening temperature, the temperature detection component controls the cross-flow cooling fan to start working, and when the surface temperature is lower than the threshold of the closing temperature , the temperature detection component controls the cross-flow cooling fan to stop working.

As a preference, there are plural air outlets arranged in an array.

As a preference, the air outlet has dust-proof louvers. The dust-proof louver includes a dust shield protruding along the surface of the air outlet and an inlet and outlet through hole along the horizontal direction, so that the dust falling from above is not easy to fall into the switch cabinet and does not affect the ventilation in the cabinet.

As a preference, the air inlet is in the shape of a grid.

As a preference, the front and lower chambers are provided with maintenance windows. Through this maintenance window, when the cross-flow cooling fan fails, maintenance without power failure can be realized.

As a preference, the temperature detection component includes an infrared temperature sensor, and the infrared temperature sensor detects the surface temperature of the copper bar and the contact box.

As a preference, the opening temperature threshold is higher than the closing temperature threshold. Since the opening temperature threshold is higher than the closing temperature threshold, when the cross-flow cooling fan starts to work, the cross-flow cooling fan will not be cut off until the air in the switch cabinet is sufficiently cooled, so that the cross-flow cooling fan will not be switched on and off frequently, ensuring that the fan work stability.

The beneficial effect of the utility model is: the surface temperature of the copper bar and the contact box is detected by the temperature detection component, and when the surface temperature exceeds the opening temperature threshold, the temperature detection component controls the cross-flow cooling fan to start working, and the When the surface temperature is lower than the shutdown temperature threshold, the temperature detection component controls the cross-flow cooling fan to stop working. When the temperature is too high, the cross-flow cooling fan introduces air along the horizontal direction, passes through the main chamber, and discharges air along the air outlet on the top of the main chamber, realizing air circulation and ensuring efficient and stable heat dissipation in the switch cabinet.

The utility model will be described in further detail below with reference to the accompanying drawings and embodiments; however, a high-current switchgear with automatic cooling function of the utility model is not limited to the embodiments.

Description of drawings

Fig. 1 is the three-dimensional structural diagram of the utility model;

Fig. 2 is a side sectional view of the utility model.

Detailed ways

Example:

Referring to Fig. 1 to Fig. 2, a high-current switchgear with automatic cooling function of the utility model, the cabinet body 1 of the current switchgear includes a main chamber 13 and a front lower chamber 14 which are independent from each other. The chamber 13 is equipped with copper bars and contact boxes 2; it also includes a cross-flow cooling fan 3 and a temperature detection assembly, which detects the surface temperature of the copper bars and contact boxes 2, and the front and lower chambers 14 are set There is an air inlet 11 opened along the side wall of the cabinet body 1, and the main chamber 13 is provided with an air outlet 12 opened along the top of the cabinet body 1; the cross-flow cooling fan 3 is arranged at the air inlet 11, guide the wind, and enter the bottom of the main chamber 13 along the bottom of the main chamber 13;

The temperature detection component is connected to the cross-flow cooling fan 3, and when the surface temperature exceeds the opening temperature threshold, the temperature detection component controls the cross-flow cooling fan 3 to start working, and the surface temperature is lower than the closing temperature threshold, the temperature detection component controls the cross-flow cooling fan 3 to stop working.

The ventilation path of the present utility model is as follows: the outside air enters through the air inlet 11 on the side of the cabinet body 1, passes through the front lower chamber 14, enters the main chamber 13 from the bottom of the main chamber 13, and passes through the main chamber 13 through the top of the main chamber. Air outlet 12 discharges.

The air outlets 12 are plural and arranged in an array.

The air outlet 12 has dust-proof shutters. The dust-proof louver includes a dust shield protruding from the surface of the air outlet 12 and an inlet and outlet through hole provided along the horizontal direction, so that the dust falling from above is difficult to fall into the switch cabinet without affecting the ventilation in the cabinet.

The tuyere 11 is in the shape of a grid.

The front lower chamber 14 is provided with a maintenance window. Through this maintenance window, when the cross-flow cooling fan 3 fails, maintenance without power failure can be realized.

The temperature detection component includes an infrared temperature sensor, and the infrared temperature sensor detects the surface temperature of the copper bar and the contact box

As a preference, the opening temperature threshold is higher than the closing temperature threshold. Since the opening temperature threshold is higher than the closing temperature threshold, when the cross-flow cooling fan starts to work, the cross-flow cooling fan will not be cut off until the air in the switch cabinet is sufficiently cooled, so that the cross-flow cooling fan will not be switched on and off frequently, ensuring that the fan work stability.

The above-mentioned embodiments are only used to further illustrate a high-current switchgear with automatic cooling function of the present invention, but the present invention is not limited to the embodiments, and any modification made to the above-mentioned embodiments based on the technical essence of the present invention Simple modifications, equivalent changes and modifications all fall within the scope of protection of the technical solution of the utility model.

Claims (7)

1. A high-current switchgear with automatic cooling function, the cabinet of the current switchgear includes a main chamber and a front lower chamber independent of each other, and the main chamber is equipped with copper bars and contact boxes; it is characterized in that : It also includes a cross-flow cooling fan and a temperature detection assembly, the temperature detection assembly detects the surface temperature of the copper bar and the contact box, the front lower chamber is provided with an air inlet along the side wall of the cabinet, the main chamber The chamber is provided with an air outlet along the top of the cabinet; the cross-flow cooling fan is arranged at the air inlet, guides the wind along the horizontal direction, and enters the bottom of the main chamber along the bottom of the main chamber; The temperature detection component is connected to the cross-flow cooling fan, and when the surface temperature exceeds the threshold of the opening temperature, the temperature detection component controls the cross-flow cooling fan to start working, and when the surface temperature is lower than the threshold of the closing temperature , the temperature detection component controls the cross-flow cooling fan to stop working. 2. A high-current switchgear with automatic cooling function according to claim 1, characterized in that: the air outlets are plural and arranged in an array. 3. A high-current switchgear with automatic cooling function according to claim 1, characterized in that: said air outlet has dust-proof shutters. 4. A high-current switchgear with automatic cooling function according to claim 1, characterized in that: the air inlet is in the shape of a grid. 5. A high-current switchgear with automatic cooling function according to claim 1, characterized in that: the front and lower chambers are provided with maintenance windows. 6. A high-current switchgear with automatic cooling function according to claim 1, characterized in that: the temperature detection component includes an infrared temperature sensor, and the infrared temperature sensor detects the surface of the copper bar and the contact box temperature. 7. The high-current switchgear with automatic cooling function according to claim 1, characterized in that: the opening temperature threshold is higher than the closing temperature threshold.