CN206195203U - Low -voltage distribution cabinet dehumidification cooling system - Google Patents

Abstract

The utility model provides a dehumidification and cooling system for a low-voltage power distribution cabinet, which includes a cabinet body; an upper cabinet door and a lower cabinet door are arranged on the outer door, and several instrument panels are arranged on the upper cabinet door, and the instrument panel is covered with a protective cover. Including: at least one ammeter and at least one voltmeter; the upper cabinet door is also provided with an upper rotary lock for locking the upper cabinet door with the cabinet body; the lower cabinet door is provided with a lock for locking the lower cabinet door with the cabinet body The controller receives the temperature signal sensed by the temperature sensor and the humidity signal sensed by the humidity sensor. When the sensed temperature signal exceeds the threshold, the control fan starts to cool down the low-voltage power distribution cabinet; when the sensed humidity signal When the threshold is exceeded, the heater is controlled to start to dehumidify the low-voltage power distribution cabinet. Effectively reduce the air humidity in the low-voltage power distribution cabinet and improve the reliability of power supply.

Description

A low-voltage power distribution cabinet dehumidification and cooling system

technical field

The utility model relates to the field of power systems, in particular to a dehumidification and cooling system for a low-voltage power distribution cabinet.

Background technique

As an important part of the line, the low-voltage distribution cabinet plays a very important role. However, the high humidity in the low-voltage power distribution cabinet shortens the creepage distance, which may cause single-phase grounding and phase-to-phase short circuit. How to effectively reduce the air humidity in the low-voltage power distribution cabinet and improve the reliability of power supply is a problem before us.

Contents of the invention

In order to overcome the deficiencies in the prior art above, the purpose of this utility model is to provide a low-voltage power distribution cabinet dehumidification and cooling system, including a cabinet and a solar power supply device; the front of the cabinet is provided with an inner door and an outer door; There is a back door; the inner door, outer door and back door are respectively connected with the cabinet;

The outer door is provided with an upper cabinet door and a lower cabinet door, and the upper cabinet door is provided with several instrument panels, the instrument panel is covered with a protective cover, and the instrument panel includes: at least one ammeter and at least one voltmeter; The upper cabinet door is also provided with an upper rotary latch for locking the upper cabinet door with the cabinet body; the lower cabinet door is provided with a lower rotary latch for locking the lower cabinet door with the cabinet body;

The upper end of the cabinet is provided with a top plate, the top plate is provided with ventilation holes, and the front wall of the cabinet close to the top plate is provided with three ventilation grids; the bottom of the cabinet is provided with a base, and the front of the base is provided with three sets of ventilation holes, three Exhaust fans are installed on each vent;

Both sides of the cabinet are respectively provided with fixing bars along the vertical direction, and the fixing bars are provided with several long holes;

The interior of the cabinet is provided with several horizontally placed mounting beams, and the two ends of the mounting beams are respectively provided with fixed round holes matching the long holes; the mounting beams are fixed on the Inside the cabinet;

A three-phase incoming line protection switch is provided inside the cabinet close to the top plate, and the three-phase incoming line protection switch is fixed inside the cabinet body through the installation beam; the lower part of the three-phase incoming line protection switch is provided with multiple molded case circuit breakers, each The molded case circuit breakers are respectively connected to the three-phase incoming line protection switch through the busbar, and multiple molded case circuit breakers are fixed inside the cabinet through the installation beam; multiple molded case circuit breakers are arranged in a horizontal line;

The inside of the cabinet is also provided with a power supply device in the cabinet, a temperature sensor, a humidity sensor, a heater, a fan, and a power switch, and a controller that is connected to the temperature sensor, the humidity sensor, the heater, the fan, and the power switch respectively;

The solar power supply device is connected with a first control switch, and the solar power supply device is connected with the power switch through the first control switch; the power supply device in the cabinet is connected with a second control switch, and the power supply device in the cabinet is connected with the power switch through the second control switch; The solar power supply device and the power supply device in the cabinet supply power to the electrical components in the system respectively, and the power supply of the solar power supply device or the power supply device in the cabinet is controlled and switched through the power switch;

The power supply device in the cabinet is provided with a first transformer for converting AC 380v into AC 220v, a second transformer for converting AC 220v into AC 48v, and an AC-DC rectifier for rectifying AC 48v into DC 48v;

The solar power supply device includes: a solar panel that absorbs solar energy and converts solar energy into voltage, an LC circuit connected with the solar panel, a compensator connected with the LC circuit, a diode connected with the compensator, a capacitor connected with the diode and a storage battery; The compensator includes: an actuator, a primary coil connected to the actuator, and a secondary coil matching the primary coil;

The controller is used to receive the temperature signal sensed by the temperature sensor and the humidity signal sensed by the humidity sensor. When the sensed temperature signal exceeds the threshold, the control fan starts to cool down the low-voltage power distribution cabinet; when the sensed humidity signal exceeds the threshold, the control The heater starts to dehumidify the low-voltage power distribution cabinet and is used to control the power switch, control the power supply of the solar power supply device or the power supply device in the cabinet.

Preferably, a display and a memory connected to the controller are also provided inside the cabinet;

The display is used to display the temperature signal sensed by the temperature sensor and the humidity signal sensed by the humidity sensor;

The memory is used to store the temperature signal sensed by the temperature sensor and the humidity signal sensed by the humidity sensor.

Preferably, an alarm connected to the controller is also provided inside the cabinet;

When the sensed temperature signal exceeds the threshold, or when the sensed humidity signal exceeds the threshold, the controller controls the alarm to perform an alarm.

Preferably, the controller is provided with an RS485 interface; the RS485 interface is used for automatic distribution of the controller and data transmission and reception.

As can be seen from the above technical solutions, the utility model has the following advantages:

The dehumidification and cooling system of the low-voltage power distribution cabinet converts light energy into electrical energy through solar panels and stores it in the battery. Reached the purpose of saving energy and reducing consumption. The temperature signal sensed by the temperature sensor and the humidity signal sensed by the humidity sensor, when the sensed temperature signal exceeds the threshold, the fan is controlled to start to cool down the low-voltage power distribution cabinet; when the sensed humidity signal exceeds the threshold, the heater is controlled to start, To dehumidify the low-voltage power distribution cabinet, you can also control the power supply of the solar power supply device or the power supply device in the cabinet by controlling the power switch. Effectively reduce the air humidity in the low-voltage power distribution cabinet and improve the reliability of power supply.

Description of drawings

In order to illustrate the technical solution of the utility model more clearly, the accompanying drawings that need to be used in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the utility model. Ordinary technicians can also obtain other drawings based on these drawings on the premise of not paying creative work.

Figure 1 is an overall schematic diagram of the cabinet;

Figure 2 is a top view of the cabinet;

Fig. 3 is a cabinet front view;

Figure 4 is a schematic diagram of power supply in the cabinet;

Fig. 5 is a schematic diagram of a solar power supply device.

detailed description

In order to make the purpose, features and advantages of the present utility model more obvious and understandable, the technical solutions in the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in this specific embodiment. Obviously, the following description The embodiments are only a part of the embodiments of the present utility model, but not all embodiments. Based on the embodiments in this patent, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this patent.

The utility model provides a low-voltage power distribution cabinet dehumidification and cooling system, as shown in Figure 1 and Figure 5, comprising a cabinet 16 and a solar power supply device 51, the front of the cabinet 16 is provided with an inner door 33 and an outer door; There is a back door; the inner door 33, the outer door and the back door are respectively movably connected with the cabinet body 16; when the maintenance personnel overhaul the low-voltage power distribution cabinet, they can open the inner door 33 and the outer door to maintain and open the front of the low-voltage power distribution cabinet. The back door is repaired to the back of the low-voltage power distribution cabinet.

The outer door is provided with an upper cabinet door 21 and a lower cabinet door 22, and the upper cabinet door 21 is provided with several instrument panels, the instrument panel is covered with a protective cover 32, and the instrument panel includes: at least one ammeter 26 and at least one voltmeter 27; The cabinet door 21 is also provided with an upper rotary latch 28 for locking the upper cabinet door 21 with the cabinet body 16; the lower cabinet door 22 is provided with a lower rotary latch for locking the lower cabinet door 22 with the cabinet body 16 29;

The upper end of the cabinet 16 is provided with a top plate 24, and the top plate 24 is provided with ventilation holes, and the front wall of the cabinet 16 near the top plate is provided with three ventilation grids 25; the bottom of the cabinet is provided with a base 23, and the front of the base 23 is provided with three groups of ventilation ports, Exhaust fans 31 are installed on the three vents;

Both sides of the cabinet body 16 are respectively provided with fixing strips 18 along the vertical direction, and the fixing strips 18 are provided with several elongated holes;

Inside the cabinet body 16 are provided with several horizontal installation beams 1, and the two ends of the installation beams 1 are respectively provided with fixed round holes matching the long holes; the installation beams 1 are fixed on the Inside the cabinet 16;

A three-phase incoming line protection switch 2 is installed inside the cabinet body 16 close to the top plate, and the three-phase incoming line protection switch 2 is fixed inside the cabinet body 16 through the installation beam 1; the lower part of the three-phase incoming line protection switch 2 is provided with multiple molded case circuit breakers Each molded case circuit breaker 3 is connected to the three-phase incoming line protection switch 2 through the busbar 7, and multiple molded case circuit breakers 3 are fixed inside the cabinet through the installation beam 1; multiple molded case circuit breakers 3 arranged in a horizontal line;

The input end of the three-phase incoming line protective switch 2 is connected to the power incoming line 6 of the cabinet body 16; the output end of the three-phase incoming line protective switch 2 is respectively connected to three connection bars 14; the input end of the molded case circuit breaker 3 is respectively connected to three The connection row 14 is connected. The bottom of the cabinet body 16 is provided with a ground wire row 11 and a neutral wire row 9 .

The inside of the cabinet is also provided with a power supply in the cabinet, a temperature sensor, a humidity sensor, a heater blower fan 53, and a power switch 54, which are respectively connected to the temperature sensor, the humidity sensor, the heater 52, the fan 53, and the power switch 54. controller 55;

The solar power supply device is connected with a first control switch 56, and the solar power supply device is connected with the power switch 54 through the first control switch 56; The power supply switch 54 is connected; the solar power supply device 51 and the power supply device in the cabinet supply power to the electrical components in the system respectively, and the power supply switch 54 controls and switches the power supply of the solar power supply device 1 or the power supply device in the cabinet;

The power supply device in the cabinet is provided with a first transformer 8 for converting 380v into AC 220v, a second transformer 59 for converting AC 220v into AC 48v, and an AC-DC rectifier 60 for rectifying AC 48v into DC 48v;

The solar power supply device 51 includes: a solar panel 61 that absorbs solar energy and converts solar energy into voltage, an LC circuit 62 connected with the solar panel 61, a compensator 63 connected with the LC circuit 62, a diode 64 connected with the compensator 63, and a diode 64 connected capacitor C and storage battery 65; the compensator 63 includes: primary side coil 66, negative side coil 67, actuator 68;

The function of the LC circuit 62 is to prevent the voltage from being disturbed by the outside. The function of the compensator 63 is that when the input voltage of the solar panel 61 fluctuates or the electric load changes, the compensator 63 can keep the input and output voltage of the storage battery stable. When the voltage input to the compensator fluctuates, the feedback voltage also changes accordingly. Here, the primary voltage of the compensator is adjusted by the actuator 68 to overcome the influence of the voltage fluctuation on the output voltage; it enters the primary coil 66 through the actuator 68 and senses The secondary coil 67 is sent to the storage battery 65 through the diode 64, and the diode 64 also prevents the current from flowing in reverse, and the capacitor C stabilizes the voltage.

The controller 55 is used to receive the temperature signal sensed by the temperature sensor and the humidity signal sensed by the humidity sensor. When the sensed temperature signal exceeds the threshold, the fan 53 is controlled to start to cool down the low-voltage power distribution cabinet; when the sensed humidity signal exceeds the threshold , control the heater 52 to start, dehumidify the low-voltage power distribution cabinet and control the power switch 54, and control the power supply of the solar power supply device or the power supply device in the cabinet.

The system also includes: a display and a memory respectively connected to the controller; the display is used to display the temperature signal sensed by the temperature sensor and the humidity signal sensed by the humidity sensor; the memory is used to store the temperature signal sensed by the temperature sensor and the humidity signal sensed by the humidity sensor.

The system also includes: an alarm connected to the controller; when the sensed temperature signal exceeds the threshold, or when the sensed humidity signal exceeds the threshold, the controller controls the alarm to perform an alarm.

The controller is equipped with an RS485 interface; the RS485 interface is used for automatic distribution of the controller and data transmission and reception.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

The above description of the disclosed embodiments enables those skilled in the art to realize or use the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (4)

1. A low-voltage power distribution cabinet dehumidification and cooling system, characterized in that it includes a cabinet and a solar power supply device; the front of the cabinet is provided with an inner door and an outer door; the back of the cabinet is provided with a back door; the inner door, the outer door and the back door The doors are respectively connected with the cabinet; The outer door is provided with an upper cabinet door and a lower cabinet door, and the upper cabinet door is provided with several instrument panels, the instrument panel is covered with a protective cover, and the instrument panel includes: at least one ammeter and at least one voltmeter; The upper cabinet door is also provided with an upper rotary latch for locking the upper cabinet door with the cabinet body; the lower cabinet door is provided with a lower rotary latch for locking the lower cabinet door with the cabinet body; The upper end of the cabinet is provided with a top plate, the top plate is provided with ventilation holes, and the front wall of the cabinet close to the top plate is provided with three ventilation grids; the bottom of the cabinet is provided with a base, and the front of the base is provided with three sets of ventilation holes, three Exhaust fans are installed on each vent; Both sides of the cabinet are respectively provided with fixing bars along the vertical direction, and the fixing bars are provided with several long holes; The interior of the cabinet is provided with several horizontally placed mounting beams, and the two ends of the mounting beams are respectively provided with fixed round holes matching the long holes; the mounting beams are fixed on the Inside the cabinet; A three-phase incoming line protection switch is provided inside the cabinet close to the top plate, and the three-phase incoming line protection switch is fixed inside the cabinet body through the installation beam; the lower part of the three-phase incoming line protection switch is provided with multiple molded case circuit breakers, each The molded case circuit breakers are respectively connected to the three-phase incoming line protection switch through the busbar, and multiple molded case circuit breakers are fixed inside the cabinet through the installation beam; multiple molded case circuit breakers are arranged in a horizontal line; The inside of the cabinet is also provided with a power supply device in the cabinet, a temperature sensor, a humidity sensor, a heater, a fan, and a power switch, and a controller that is connected to the temperature sensor, the humidity sensor, the heater, the fan, and the power switch respectively; The solar power supply device is connected with a first control switch, and the solar power supply device is connected with the power switch through the first control switch; the power supply device in the cabinet is connected with a second control switch, and the power supply device in the cabinet is connected with the power switch through the second control switch; The solar power supply device and the power supply device in the cabinet supply power to the electrical components in the system respectively, and the power supply of the solar power supply device or the power supply device in the cabinet is controlled and switched through the power switch; The power supply device in the cabinet is provided with a first transformer for converting 380v into AC 220v, a second transformer for converting AC 220v into AC 48v, and an AC-DC rectifier for rectifying AC 48v into DC 48v; The solar power supply device includes: a solar panel that absorbs solar energy and converts solar energy into voltage, an LC circuit connected with the solar panel, a compensator connected with the LC circuit, a diode connected with the compensator, a capacitor connected with the diode and a storage battery; The compensator includes: an actuator, a primary coil connected to the actuator, and a secondary coil matching the primary coil; The controller is used to receive the temperature signal sensed by the temperature sensor and the humidity signal sensed by the humidity sensor. When the sensed temperature signal exceeds the threshold, the control fan starts to cool down the low-voltage power distribution cabinet; when the sensed humidity signal exceeds the threshold, the control The heater starts to dehumidify the low-voltage power distribution cabinet and is used to control the power switch, control the power supply of the solar power supply device or the power supply device in the cabinet. 2. The low-voltage power distribution cabinet dehumidification and cooling system according to claim 1, characterized in that, The inside of the cabinet is also provided with a display and a memory that are respectively connected to the controller; The display is used to display the temperature signal sensed by the temperature sensor and the humidity signal sensed by the humidity sensor; The memory is used to store the temperature signal sensed by the temperature sensor and the humidity signal sensed by the humidity sensor. 3. The low-voltage power distribution cabinet dehumidification and cooling system according to claim 1, characterized in that, The inside of the cabinet is also provided with an alarm connected to the controller; When the sensed temperature signal exceeds the threshold, or when the sensed humidity signal exceeds the threshold, the controller controls the alarm to perform an alarm. 4. The low-voltage power distribution cabinet dehumidification and cooling system according to claim 1, characterized in that, The controller is equipped with an RS485 interface; the RS485 interface is used for automatic distribution of the controller and data transmission and reception.