CN204189047U - Electric power outdoor cabinet temperature control system - Google Patents

Abstract

The utility model discloses a temperature control system for an electric outdoor cabinet, which includes a cabinet for placing devices. The cabinet is provided with an air-cooling module for ventilation and an air conditioner for maintaining a constant temperature. The air-cooling module It includes a ventilation fan and a louver structure with automatic opening and closing functions. The utility model has the advantages of good temperature regulation ability when the ambient temperature is too high or too low, and the protection level is greatly improved compared with the conventional method. When the fan stops working, the inside of the cabinet is a closed environment, and the double heat dissipation system , with higher reliability. In addition, the system can also use the air conditioner for heating. The temperature inside the cabinet is moderately higher than the air temperature outside the cabinet. When the ambient temperature is too high, the heat dissipation performance is greatly reduced.

Description

Electric outdoor cabinet temperature control system

technical field

The utility model relates to the field of electric facilities, in particular to the cabinet body structure of an electric outdoor cabinet.

Background technique

Power outdoor cabinet refers to the cabinet that is directly under the influence of natural climate, generally processed by stainless steel, and does not allow unauthorized operators to enter the operation, and provides outdoor physical working environment and safety system equipment for power protection devices.

Power supply equipment, batteries, protection devices, measurement and control devices, transmission equipment and other supporting equipment can be installed in the cabinet. These equipment will generate a certain amount of heat when they are powered on. In the natural environment, the temperature and humidity vary greatly, and the working temperature and humidity of these internal devices must be within a certain range, so the outdoor cabinet must be equipped with a corresponding temperature control system.

At present, the temperature control system methods of electric outdoor cabinets mainly include the following types

1. Forced air cooling system

The fan (axial fan or centrifugal fan) is used to realize the convection of the air inside and outside the cabinet, to discharge the indoor hot air to the outside, and at the same time to discharge the outdoor cold air into the room to realize the transfer of heat in the cabinet.

Advantages: 1. The fan structure is simple, small in size, easy to install and maintain; 2. Low energy consumption; 3. Very low cost;

Disadvantages: 1. When the ambient temperature is too high in summer, the heat dissipation effect is poor, and it cannot bear the heavy responsibility of cooling the cabinet for a long time; 2. The protection level is low, dust, moisture and corrosive gases enter the inside of the cabinet, and it is easy to accumulate dust and other dirt and pollute the cabinet. The components in the cabinet will intensify the heat island effect of the components; 3. The fan can only dissipate heat and cool down, and the ambient temperature in winter is too low to heat up the cabinet.

2. Heat exchanger cooling system

The heat exchanger device uses the air outside the cabinet which is lower than the temperature inside the cabinet to conduct effective exchange through the heat exchange core and transfer the heat inside the cabinet to the air outside the cabinet. When the heat exchanger is working, the air outside the cabinet and the air inside the cabinet at different temperatures are driven by the fan to exchange heat through the partition plate made of metal materials, and the airflow on both sides is 100% completely separated.

Advantages: 1. High protection level, which eliminates possible pollution of the cabinet caused by humidity and dust, and avoids malfunctions caused by heat, humidity, dust and other pollutants. 2. The heat dissipation effect is better than that of the fan.

Disadvantages: 1. Since the essence of the heat exchanger is heat conduction, the temperature in the cabinet is always higher than the ambient temperature. When the ambient temperature is too high in summer, the temperature in the cabinet will be too high; 2. The heat exchanger fan can only dissipate heat and cool down. In winter, the ambient temperature is too low to heat up the cabinet.

3. Air conditioner temperature control system

The cabinet air conditioner has various installation methods such as wall-mounted, semi-recessed, fully-recessed, and top-mounted. It can be determined whether to cool or heat according to the specific temperature in the cabinet.

Advantages: 1. Good heat dissipation effect, since the cold air is directly sent to the heat source, it can ensure that there are no hot spots in the cabinet; 2. High protection level, can prevent dust, moisture and corrosive gases from entering the cabinet; 3. The ambient temperature in winter is too high When it is low, it can be heated up.

Disadvantages: high energy consumption.

Utility model content

The technical problem to be solved by the utility model is to realize a power outdoor cabinet temperature control system that makes full use of the advantages of the air conditioner and fan, greatly improves the reliability of the temperature control system, reduces the energy consumption of the system, and prolongs the service life of the system.

In order to achieve the above purpose, the technical solution adopted by the utility model is: the temperature control system of the electric outdoor cabinet, including a cabinet for placing devices, the cabinet is provided with an air-cooled module for ventilation, and an air conditioner for maintaining a constant temperature The air-cooling module includes a ventilation fan and a louver structure with automatic opening and closing functions.

The air-cooled module is located on the top of the cabinet, the air conditioner is located on the rear panel of the cabinet, the top of the cabinet includes an inner top plate and an outer top plate, the air-cooled module is fixed on the inner top plate, and the outer layer The edge of the top plate protrudes from the cabinet and forms a downward ventilation vent with the inner top plate.

The louver structure of the air-cooled module is fixed on the window frame. The louver structure is composed of a plurality of blades. One side of the blades is connected by a connecting rod. The connecting rod is driven by a motor to drive the displacement to drive the blades to fold. The window frame and the ventilation fan are fixed in the metal frame, and the metal frame is fixed on the inner top plate by screws.

The lower eaves of each blade is provided with a condensation water tank in the form of a flanging, and the middle of the condensation water tank is arched upwards to guide the condensation into the water diversion grooves of the window frames on both sides.

The air conditioner is provided with a condensation water collector, and the top of the condensation water collector is provided with an overflow hole. The condensation water collector is provided with a cooling pipeline passing through the components in the cabinet, and a water pump is provided on the cooling pipeline.

The water diversion tank guides the condensed water into the condensation water collector through the pipeline, and the condensation water collector is provided with a water level sensor.

The air outlet pipes of the air conditioner are provided with a plurality of air outlet pipes, and each air outlet pipe is provided with an electric valve, and each device in the cabinet is provided with a temperature sensor, and is equipped with an air outlet directly to the air outlet. air duct.

The cabinet is equipped with a temperature sensor and a humidity sensor, and the temperature sensor, water level sensor and humidity sensor respectively transmit the collected signals to the controller, and the controller outputs control signals to the electric valves, water pumps, motors, and ventilation fans and an air conditioner, the controller is equipped with a communication unit and a storage unit.

The utility model has the advantage that when the ambient temperature is too high or too low, it has a good temperature regulation ability, and the protection level is greatly improved compared with the conventional method. When the fan stops working, the inside of the cabinet is a closed environment, and the double heat dissipation system , with higher reliability. In addition, the system can also use the air conditioner for heating. The temperature inside the cabinet is moderately higher than the air temperature outside the cabinet. When the ambient temperature is too high, the heat dissipation performance is greatly reduced.

Description of drawings

The following is a brief description of the content expressed in each piece of drawings in the specification sheet of the utility model and the marks in the figure:

Figure 1-3 Schematic diagram of the temperature control system;

Fig. 4 is a schematic diagram of the structure of the air-cooled module;

The marks in the above figures are: 1. Cabinet; 2. Inner roof; 3. Outer roof; 4. Air-cooled module; 5. Air conditioner; 6. Condensation collector; 7. Water pump; 8. Cooling pipe ; 41, blade; 42, condensation pond; 43, water channel; 44, connecting rod; 45, motor; 46 window frame.

Detailed ways

As shown in Figure 1-3, the power outdoor cabinet temperature control system includes a cabinet 1 for placing devices, an air cooling module 4 for ventilation, and an air conditioner 5 for keeping the temperature constant. The temperature adjustment device achieves the purpose of intelligent adjustment.

The air-cooling module 4 is located on the top of the cabinet 1, the air conditioner 5 is located on the rear panel of the cabinet 1, the top of the cabinet 1 includes the inner roof 2 and the outer roof 3, the air-cooling module 4 is fixed on the inner roof 2, and the edge of the outer roof 3 Protrude from the cabinet 1 and form a downward ventilation vent with the inner roof 2, as shown in Figure 1, so that the inner roof 2 and the outer roof 3 form a ventilation channel to prevent rainwater from entering the cabinet, and at the same time protrude Outer layer top plate 3 also has the effect of keeping out the rain eaves, avoids rainwater to infiltrate from the seam on the cabinet body, thereby reliably protects internal components.

The air-cooling module 4 includes a ventilation fan and a louver structure with automatic opening and closing functions. As shown in Figure 4, the louver structure of the air-cooling module 4 is fixed on the window frame 46. Fixed on the window frame 46 by the pin shaft, one side of each blade 41 is connected by the connecting rod 44, the blade 41 can be fixed on the connecting rod 44 by the pin shaft, and the connecting rod 44 is driven by the motor 45 to drive the displacement so as to drive the blade 41 to turn over Fold, window frame 46 and ventilating fan are fixed in the metal frame, constitute a whole convenient installation, metal frame can be fixed on the inner floor top board 2 by screws like this, and the inner layer top board 2 only needs to reserve installation hole and get final product.

Since the cabinet 1 is installed outdoors, in order to prevent condensation from affecting the operation of internal devices, a condensation water tank 42 in the form of a flanging is provided on the lower eaves of each blade 41, and the middle of the condensation water tank 42 is arched upwards to guide the condensation. Flow into the water guide groove 43 of the window frames 46 on both sides. Pipelines can be provided to lead the condensed water out of the cabinet 1, and can also be recycled into the condensed water collector 6 of the air conditioner 5.

Condensation water collector 6 is a container for collecting condensed water from the air conditioner. An overflow hole is provided on the top of the condensation water collector 6. When the collected condensed water exceeds the capacity of the container, it can be discharged outside the cabinet 1 through the overflow hole. The condensation water collector 6 is provided with There is a cooling pipeline 8 passing through the components in the cabinet 1. The cooling pipeline 8 is preferably a finned tube. The cooling pipeline 8 is provided with a water pump 7 to form a water cooling cycle. Since the condensed water temperature of the air conditioner 5 is low, it is used as a water cooling cycle to further improve cooling. effect, and can reduce cooling energy consumption. In order to prevent the water pump 7 from running without load, a water level sensor is provided in the condensate water collector 6, and when the water level reaches the water level that can be operated, the water cooling cycle will be performed.

In order to improve the cooling effect of the air conditioner 5, multiple air outlet pipes are provided, each air outlet pipe is provided with an electric valve, each device in the cabinet 1 is provided with a temperature sensor, and is equipped with a positive outlet The air outlet duct of the wind, due to the different heat production efficiency of each device, such a structure can reduce the temperature in a targeted manner, and improve the cooling efficiency and effect.

In order to optimize the selection of cooling equipment, the cabinet 1 is equipped with a temperature sensor for collecting the internal temperature of the cabinet 1, and a humidity sensor for collecting the internal humidity. The above-mentioned temperature sensor, water level sensor and humidity sensor respectively transmit the collected signals to the controller. The controller outputs control signals to the electric valve, water pump 7, motor 45, ventilation fan and air conditioner 5, and the controller is equipped with a communication unit and a storage unit, the storage unit can store historical information, and the communication unit can send an alarm signal.

In addition, a solar charging board and a wind blade for generating electricity can also be arranged on the top of the cabinet 1, and a storage battery can be equipped to charge the storage battery through the solar charging board and the wind blade for generating wind power. control system energy consumption.

Based on the above system, the control method of the temperature control system of the electric outdoor cabinet is as follows:

The system starts, and the system sets the following working modes according to the status in cabinet 1:

1. If the humidity in the cabinet 1 is higher than the humidity threshold, start the air conditioner 5 to dehumidify;

2. If the temperature inside the cabinet 1 is normal, open the louvers and turn off the ventilation fan and air conditioner 5;

3. If the temperature inside the cabinet 1 is lower than the low temperature threshold, close the louvers and the ventilation fan, and start the air conditioner 5 to heat up. At this time, the whole is heated, and the electric valves of each air outlet pipe are half-opened;

4. If the temperature inside the cabinet 1 is higher than the first high temperature threshold, turn on the louvers and ventilation fans, and turn off the air conditioner 5;

5. If the temperature inside the cabinet 1 is higher than the second high temperature threshold, close the louvers and ventilation fans, and start the air conditioner 5 to cool down. At this time, the overall temperature is lowered, and the electric valves of each air outlet pipe are half-opened;

6. If the temperature in the cabinet 1 is lower than the second high temperature threshold, if the temperature of a certain device exceeds the preset temperature threshold, then turn on the air conditioner 5 and only turn on the corresponding air outlet duct;

If the humidity, temperature or temperature of a single device in the cabinet 1 exceeds the warning threshold, an alarm will be sent to the monitoring center.

Among them, the humidity threshold<normal temperature range<the first high temperature threshold<the second high temperature threshold<the warning threshold, and the warning threshold of each device is set according to the safe use temperature of the specific device.

The switching time between the above working modes is longer than the preset time A (for example, 5 minutes), so as to avoid frequent switching when the temperature fluctuates, resulting in equipment damage. If the temperature in the cabinet 1 is higher than the second high temperature threshold and the signal collected by the water level sensor is normal , then start the water pump 7 to carry out circulating water cooling, which can avoid the no-load operation of the water pump 7.

Claims (6)

1. electric power outdoor cabinet temperature control system, comprise the rack of mask placement device, it is characterized in that: described rack is provided with the air cooling module for taking a breath, and for the constant air conditioner of storage temperature, described air cooling module comprises scavenger fan and has the louver structure automatically opening closure function;

Described air cooling module is positioned at enclosure top, described air conditioner is positioned on rack rear panel, described enclosure top comprises internal layer top board and outer top board, and described air cooling module is fixed on internal layer top board, and described outer ceiling edge stretches out rack and forms the ventilating opening of down-draught with internal layer top board;

The louver structure of described air cooling module is fixed on window frame, described louver structure is arranged by more blades and forms, described blade side is connected by connecting rod, described connecting rod passes through motor drive displacement thus driven vane turnover, described window frame and scavenger fan are fixed in metal frame, and described metal frame is fixed by screws on internal layer top board.

2. electric power outdoor cabinet temperature control system according to claim 1, is characterized in that: under blade described in every sheet, eaves is equipped with the condensation accumulated water groove of flange form, upwards arches upward in gutter condensation being guided to two side window frames in the middle of described condensation accumulated water groove.

3. electric power outdoor cabinet temperature control system according to claim 2, it is characterized in that: described air conditioner is provided with condensation water collector, described condensation water collector top is provided with spillway hole, and described condensation water collector is provided with the cooling duct of device in rack, and described cooling duct is provided with water pump.

4. electric power outdoor cabinet temperature control system according to claim 3, is characterized in that: condensation water is drained in condensation water collector by pipeline by described gutter, is provided with level sensor in described condensation water collector.

5. electric power outdoor cabinet temperature control system according to claim 4, it is characterized in that: the wind pipe of described air conditioner is provided with many, each wind pipe is equipped with electrically operated valve, each device in described rack is equipped with a temperature sensor, and supportingly has one just to the wind pipe of its air-out.

6. electric power outdoor cabinet temperature control system according to claim 5, it is characterized in that: in described rack, be provided with temperature sensor and humidity sensor, the signal of collection is delivered to controller by described temperature sensor, level sensor and humidity sensor respectively, described controller outputs control signals to electrically operated valve, water pump, motor, scavenger fan and air conditioner, and described controller is furnished with communication unit and storage unit.