A direct current cabinet with active heat dissipation and temperature control alarm function

Abstract

The utility model relates to a direct current cabinet with initiative heat dissipation and temperature control alarm function, including direct current cabinet body, and the heat dissipation air vent that is set up in the position of the both sides of direct current cabinet body upper end, still including fixedly connected with the heat dissipation fan of direct current cabinet body near bottom both sides position, the reinforcing rib that is longitudinally seted up in direct current cabinet body inner wall, direct current cabinet body inner wall still transversely fixedly connected with multiple groups of bridge frame perpendicular to reinforcing rib, multiple groups of bridge frame upper end fixed all install heat dissipation pipeline, direct current cabinet body inner wall fixedly connected with temperature sensor, PLC controller, and temperature sensor is electrically connected heat dissipation fan through PLC controller. The utility model with temperature sensor as the perception hub, real -time collection direct current cabinet internal temperature data, divide three and realize accurate decision -making through PLC controller to temperature threshold, realize temperature control function and the intelligent linkage adjustment of heat dissipation equipment, significantly reduce the overheating risk, the stability, safety and service life of equipment are indirectly promoted.

Description

Technical Field

[0001] This utility model relates to the field of DC cabinet equipment, and in particular to a DC cabinet with active heat dissipation and temperature control alarm functions. Background Technology

[0002] DC power supply cabinets (DC cabinets) are core equipment in modern power systems, data centers, communication base stations, and industrial control systems. They integrate power devices such as rectifier modules, circuit breakers, fuses, and terminal blocks. During operation, especially under high current output or high ambient temperature conditions, the power electronic components inside the cabinet generate significant heat. If this heat is not dissipated effectively and promptly, the internal temperature will continue to rise. Excessively high operating temperatures can severely affect the reliability of components, accelerate component aging, reduce lifespan, and even cause equipment failure, tripping, or fire, threatening the safe operation of the system and the continuity of power supply.

[0003] Traditional DC power cabinet cooling solutions primarily rely on natural ventilation holes, simple forced airflow from fans, or passive heat sinks. These traditional methods suffer from several drawbacks. Passive cooling alone cannot meet the high-temperature cooling demands under heavy loads, resulting in low efficiency. Simple fan cooling requires the fan to operate continuously at high efficiency, leading to unnecessary power waste and high energy consumption. Furthermore, their temperature control functions are often rudimentary, relying solely on mechanical temperature switches with fixed temperature thresholds for alarms or forced power cuts. This lack of precise real-time temperature monitoring results in delayed warning responses and an inability to achieve intelligent linkage and adjustment with the cooling equipment. Therefore, there is an urgent need to develop a new type of DC power cabinet with efficient, intelligent, and reliable cooling capabilities, capable of real-time and accurate temperature monitoring and timely warnings, to improve equipment stability, safety, and lifespan. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a DC cabinet with active heat dissipation and temperature control alarm functions.

[0005] A DC cabinet with active heat dissipation and temperature control alarm functions includes a DC cabinet body and heat dissipation vents located on both sides near the upper end of the DC cabinet body. It also includes heat dissipation fans fixedly connected to the DC cabinet body near the bottom sides. The inner wall of the DC cabinet body is longitudinally provided with reinforcing ribs. The inner wall of the DC cabinet body is also laterally fixedly connected with multiple sets of cable trays perpendicular to the reinforcing ribs. Each set of cable trays is fixedly installed with heat dissipation pipes at its upper end. The inner wall of the DC cabinet body is fixedly connected with a temperature sensor and a PLC controller. The temperature sensor is electrically connected to the heat dissipation fans through the PLC controller to realize the power adjustment and forward and reverse rotation of the heat dissipation fans.

[0006] As a further improvement to the above solution, dustproof nets are provided on the outer ends of the heat dissipation vents and the heat dissipation fan.

[0007] As a further improvement to the above solution, the upper end of the heat dissipation pipe is evenly provided with air nozzles, and the inner ends of the heat dissipation fan and the heat dissipation pipe are connected to the reinforcing rib through connecting pipes. By starting the heat dissipation fan, it is convenient for air to circulate and dissipate heat between the internal cavity of the DC cabinet and the outside.

[0008] As a further improvement to the above solution, the air nozzle is composed of a vertical air nozzle and an inclined air nozzle, which facilitates comprehensive heat dissipation of the power devices inside the DC cabinet body.

[0009] As a further improvement to the above solution, the cooling fan is an industrial-grade fan, model EFB0624VHD-TZW4, with a rated voltage of 48VDC.

[0010] As a further improvement to the above solution, an integrated audible and visual alarm light is fixedly connected to the upper end of the DC cabinet body, and the integrated audible and visual alarm light is electrically connected to the PLC controller.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention incorporates temperature sensors within the DC cabinet to collect real-time internal temperature data. Temperature thresholds are divided into three levels and controlled via a PLC controller. Below 40℃, it relies entirely on natural air cooling for zero-energy operation. Between 40-60℃, a low-power positive pressure airflow mode is used to guide airflow and directionally cool the power devices generating heat, reducing power consumption. Above 60℃, a negative pressure suction mode is switched, coupled with audible and visual alarms, to quickly expel high-temperature gas. This achieves intelligent linkage adjustment between temperature control and heat dissipation equipment, significantly reducing the risk of overheating while also providing significant energy savings, indirectly improving the stability, safety, and lifespan of the equipment.

[0012] Based on this, the present invention lays out the heat dissipation pipes inside the DC cabinet and connects to different areas. At the same time, multi-angle nozzles are configured on the outside of the heat dissipation pipes, which can accurately and relatively comprehensively dissipate high temperature heat from power devices in different areas inside. The structure is simple, the layout is reasonable, and the overall heat dissipation reliability is improved. Attached Figure Description

[0013] Figure 1 This is a structural illustration of the present utility model; Figure 2 This is a partial cross-sectional view of the present invention; Figure 3 This is an enlarged view of the structure at point A of this utility model; Figure 4 This is a schematic diagram of the internal gas flow when the present invention operates below 40°C; Figure 5 This is a schematic diagram of the internal gas flow when the present invention is operating at 40-60℃; Figure 6 This is a schematic diagram of the internal gas flow when the present invention operates at temperatures above 60°C.

[0014] Explanation of key symbols: 1-DC cabinet body, 2-heat dissipation vent, 3-reinforcing rib, 4-cable tray, 5-heat dissipation pipe, 6-air nozzle, 7-heat dissipation fan, 701-dustproof net, 702-connecting pipe, 8-temperature sensor, 9-PLC controller, 10-integrated sound and light alarm light. Detailed Implementation

[0015] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0016] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Please combine Figure 1-6A DC cabinet with active heat dissipation and temperature control alarm functions includes a DC cabinet body 1, and heat dissipation vents 2 located on both sides near the upper end of the DC cabinet body 1. It also includes heat dissipation fans 7 fixedly connected to the DC cabinet body 1 near the bottom sides. The inner wall of the DC cabinet body 1 has longitudinally arranged reinforcing ribs 3. Multiple sets of cable trays 4 perpendicular to the reinforcing ribs 3 are also horizontally fixedly connected to the inner wall of the DC cabinet body 1. Heat dissipation pipes 5 are fixedly installed on the upper ends of the multiple sets of cable trays 4. Air nozzles 6 are evenly arranged on the upper ends of the heat dissipation pipes 5. The inner ends of the heat dissipation fans 7 and the heat dissipation pipes 5 are connected to the reinforcing ribs 3 through connecting pipes 702. Activating the heat dissipation fans 7 facilitates airflow and heat dissipation between the inner cavity of the DC cabinet body 1 and the outside environment. A temperature sensor 8 and a PLC controller 9 are fixedly connected to the inner wall of the DC cabinet body 1. The temperature sensor 8 is electrically connected to the heat dissipation fans 7 through the PLC controller 9, enabling power adjustment and forward / reverse rotation of the heat dissipation fans 7. An integrated audible and visual alarm light 10 is fixedly connected to the upper end of the DC cabinet body 1, and the integrated audible and visual alarm light 10 is electrically connected to the PLC controller 9.

[0020] Based on this, it should be added that the PLC controller 9 of this utility model is a Siemens S7-1200, which has an analog input module (for receiving the temperature signal from the temperature sensor 8) and a digital output (for controlling the cooling fan 7 and the integrated sound and light alarm light 10).

[0021] In addition, the PLC controller 9 is preset to: when all sensor temperatures are <40℃, the cooling fan 7 is turned off; when the sensor temperatures are ≥40℃ and <60℃, the cooling fan 7 is turned on and rotates forward (power is 35% of full power); when the sensor temperatures are ≥60℃, the fan rotates in reverse (full power state) and the audible and visual alarm is triggered at the same time.

[0022] Example: Based on the above settings, when the DC cabinet body 1 designed in this utility model is running under low load, the internal temperature is low. When the temperature sensor 8 detects that the DC cabinet body 1 is in the low temperature zone (below 40℃), the DC cabinet body 1 relies solely on the heat dissipation vents 2 on both sides for natural ventilation and heat dissipation, achieving zero-energy operation. If the DC cabinet body is under load, the internal temperature will gradually rise. When the temperature sensor 8 detects that the DC cabinet body 1 is in the medium temperature zone (40-60℃), the PLC controller 9 electrically drives the cooling fan 7 to rotate in the forward direction and uses a low-power mode (35% of full power) to provide positive pressure airflow, drawing in outside air. After passing through the hollow reinforcing ribs 3 and the heat dissipation pipes 5, the airflow is ejected from the nozzles 6, resulting in directional cooling. The heat-generating power devices are slowly cooled by blowing in outside air, which is then exhausted through the heat dissipation vent 2, achieving low-power heat dissipation and cooling. If the DC cabinet body 1 operates under load for a long time, and the temperature sensor 8 detects that the DC cabinet body 1 is in a high-temperature zone (above 60°C), the PLC controller 9 electrically drives the cooling fan 7 to rotate, switching to negative pressure suction mode. At this time, the cooling fan 7 is running at full power. The nozzle 6 draws the high-temperature air near the power devices through the above-mentioned pipes and quickly exhausts the high-temperature gas to achieve active heat dissipation. At the same time, the integrated sound and light alarm light 10 reminds the staff to quickly intervene manually. By using the intelligent linkage adjustment of temperature control function and heat dissipation equipment, the risk of overheating is significantly reduced, which indirectly improves the stability, safety and service life of the equipment.

[0023] Based on the above embodiments, it is also necessary to add the following: A. The power devices in the DC cabinet body 1 are installed in rows and categories, so the temperature sensors 8 can be set in multiple groups, respectively set near different power devices to realize multi-area temperature detection. At this time, the logic preset of the PLC controller 9 is as follows: when the temperature of all sensors is <40℃, the cooling fan 7 is turned off; when the temperature of any sensor is ≥40℃ and <60℃, the cooling fan 7 is turned on and the fan rotates forward (power is 35% of full power); when the temperature of any sensor is ≥60℃, the fan rotates in reverse (full power state) and the audible and visual alarm is triggered at the same time.

[0024] B. The staff can also set an over-temperature protection for the PLC controller 9. When the internal temperature is >80℃, the circuit breaker can be triggered to trip, accurately cut off the power supply to the dangerous heat source, and maintain the operation of the heat dissipation and monitoring system.

[0025] Dustproof nets 701 are provided on the outer ends of the heat dissipation vent 2 and the heat dissipation fan 7. The dustproof nets 701 are designed for industrial dust protection to prevent dust in the air from entering the DC cabinet body 1 and damaging the power devices during heat dissipation. In addition, it should be noted that the heat dissipation fan 7 has forward and reverse operation in the above embodiment, which can automatically clean the dust adhering to and clogging the outer side of the dustproof nets 701.

[0026] Among them, the air nozzle 6 is composed of vertical air nozzles and inclined air nozzles. Since the power devices in the DC cabinet body 1 are installed in rows and categories, a set of heat dissipation pipes 5 corresponds to a row of power devices. The power devices are designed in a direction and have a certain height. The inclined air nozzles, together with the vertical air nozzles, can be fully connected to the outside of the power devices, which facilitates the comprehensive heat dissipation of the power devices in the cavity of the DC cabinet body 1.

[0027] Among them, the cooling fan 7 is an industrial-grade fan, model EFB0624VHD-TZW4, with a rated voltage of 48VDC. Its interface supports PWM speed regulation at a frequency of 5kHz and forward and reverse wired control. The noise level is as low as 45dB(A), which meets the daily cooling needs of the DC cabinet body 1. Moreover, it is cheaper than imported industrial fans.

[0028] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

[0029] In the description of this utility model, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

Claims

1. A DC cabinet with active heat dissipation and temperature control alarm functions, comprising a DC cabinet body (1), and heat dissipation vents (2) disposed on both sides near the upper end of the DC cabinet body (1), and further comprising heat dissipation fans (7) fixedly connected to both sides near the bottom of the DC cabinet body (1), characterized in that: The DC cabinet body (1) has a longitudinally arranged reinforcing rib (3) on its inner wall. The inner wall of the DC cabinet body (1) is also horizontally fixedly connected to multiple sets of cable trays (4) perpendicular to the reinforcing ribs (3). The upper ends of the multiple sets of cable trays (4) are all fixedly installed with heat dissipation pipes (5). The inner wall of the DC cabinet body (1) is fixedly connected to a temperature sensor (8) and a PLC controller (9). The temperature sensor (8) is electrically connected to the heat dissipation fan (7) through the PLC controller (9) to realize the power adjustment and forward and reverse rotation of the heat dissipation fan (7).

2. The direct current cabinet with active heat dissipation and temperature control alarm function according to claim 1, characterized in that, Dustproof nets (701) are provided on the outer ends of the heat dissipation vent (2) and the heat dissipation fan (7).

3. The direct current cabinet with active heat dissipation and temperature control alarm function according to claim 2, characterized in that, The upper end of the heat dissipation pipe (5) is uniformly provided with air nozzles (6). The inner end of the heat dissipation fan (7) and the heat dissipation pipe (5) are connected to the reinforcing rib (3) through the connecting pipe (702). By starting the heat dissipation fan (7), the air circulation between the inner cavity of the DC cabinet body (1) and the outside world is facilitated.

4. The direct current cabinet with active heat dissipation and temperature control alarm function according to claim 3, characterized in that, The air nozzle (6) is composed of a vertical air nozzle and an inclined air nozzle, which facilitates comprehensive heat dissipation of the power devices inside the DC cabinet body (1).

5. The direct current cabinet with active heat dissipation and temperature control alarm function according to claim 4, characterized in that, The cooling fan (7) is an industrial-grade fan, model EFB0624VHD-TZW4, with a rated voltage of 48VDC.

6. The direct current cabinet with active heat dissipation and temperature control alarm function according to claim 5, characterized in that, The DC cabinet body (1) is fixedly connected to an integrated sound and light alarm lamp (10), and the integrated sound and light alarm lamp (10) is electrically connected to the PLC controller (9).

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