CN114498394A

CN114498394A - Energy-saving heat-radiating power distribution cabinet

Info

Publication number: CN114498394A
Application number: CN202210090209.6A
Authority: CN
Inventors: 陆伟良; 朱荣贵; 周国春
Original assignee: Suzhou State Grid Tongfang Power Construction Engineering Co ltd
Current assignee: Suzhou State Grid Tongfang Power Construction Engineering Co ltd
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-05-13

Abstract

The invention discloses an energy-saving and heat-dissipating power distribution cabinet, and relates to the technical field of power distribution cabinets. The energy-saving and heat-dissipating power distribution cabinet comprises a cabinet body, a louver component, an exhaust electric fan, a controller, an air conditioner internal unit, an air conditioner external unit, a gas guide pipe and a micro temperature sensing piece, wherein a window is arranged on the cabinet body, the louver component is arranged on the peripheral wall of the window, the exhaust electric fan is arranged on the inner wall of the cabinet body, the exhaust electric fan faces the window, the controller and the air conditioner internal unit are both arranged on the inner wall of the cabinet body, the air conditioner external unit is arranged on the outer wall of the cabinet body, the gas guide pipe is arranged in the cabinet body, one end of the gas guide pipe is connected with the gas inlet end of the air conditioner internal unit, the other end of the gas guide pipe is sealed, a gas hole facing to electrical equipment is arranged on the gas guide pipe, the micro temperature sensing piece faces the electrical equipment, and the louver component, the exhaust electric fan, the micro temperature sensing piece and the air conditioner internal unit are all electrically connected with the controller. This application can carry out the cooling to electrical equipment more accurately, helps improving electrical equipment's radiating effect.

Description

Energy-saving heat-radiating power distribution cabinet

Technical Field

The invention relates to the technical field of power distribution cabinets, in particular to an energy-saving and heat-dissipating power distribution cabinet.

Background

The power distribution cabinet is a final-stage device of a power distribution system, and a plurality of electrical devices for regulating or detecting a power grid are generally installed in the power distribution cabinet, so that the power distribution cabinet is an important component for a power distribution network.

In the correlation technique, the heat dissipation hole has generally been seted up on the cabinet body of switch board, installs the exhaust electric fan on the switch board inner wall. The work is opened with cloth to the electrical equipment in the switch board and exhaust fan, can produce more heat in the electrical equipment working process, and the exhaust fan blows the hot gas in the switch board outside the switch board from the louvre, can help reducing the high temperature to the influence of electrical equipment with higher speed the switch board heat dissipation.

In view of the above-mentioned related art, the inventor believes that the exhaust fan has a poor regulating effect on the surface temperature of each electrical device, which may cause a situation where the heat dissipation effect of a part of the electrical devices is poor.

Disclosure of Invention

In order to improve the radiating effect of switch board, this application provides an energy-conserving radiating switch board.

In a first aspect, the application provides an energy-saving and heat-dissipating power distribution cabinet which adopts the following technical scheme:

an energy-saving and heat-dissipating power distribution cabinet comprises a cabinet body, a louver component and an exhaust fan, and further comprises a controller, an air conditioner internal unit, an air conditioner external unit, a gas-leading pipe surrounding the periphery of the electrical equipment and a micro temperature sensing component for sensing the temperature of the electrical equipment, wherein the cabinet body is provided with a window, the louver component is arranged on the peripheral wall of the window, the exhaust fan is arranged on the inner wall of the cabinet body, the exhaust fan faces the window, the controller and the air conditioner internal unit are both arranged on the inner wall of the cabinet body, the air conditioner external unit is arranged on the outer wall of the cabinet body, the air conditioner internal unit is connected with the air conditioner external unit, the gas-leading pipe is arranged in the cabinet body, one end of the gas-leading pipe is connected with the gas inlet end of the air conditioner internal unit, the other end of the gas-leading pipe is sealed, the gas hole facing the electrical equipment is arranged on the gas-leading pipe, and the micro temperature sensing component is arranged on the gas-leading pipe, the micro temperature sensing piece faces to the electrical equipment, and the shutter assembly, the exhaust fan, the micro temperature sensing piece and the air conditioner indoor unit are all electrically connected with the controller.

By adopting the technical scheme, when the electrical equipment works, the micro temperature sensing element can sense the temperature of the electrical equipment, when the temperature of the electrical equipment is higher, the controller can start the air conditioner internal unit and the air conditioner external unit to work, and the air conditioner internal unit sprays cold air on the electrical equipment through the air guide pipe and the air hole, so that the working electrical equipment can be cooled more accurately; the shutter assembly is installed at the window, the window can be opened or closed according to needs, and when the temperature in the cabinet body is high, the controller can start the shutter assembly and the exhaust electric fan to discharge the gas in the cabinet body to the outside of the cabinet body and reduce the temperature in the cabinet body. Therefore, the controller, the air conditioner internal unit, the air conditioner external unit and the air guide pipe are beneficial to improving the heat dissipation effect of the electrical equipment.

In a specific implementation mode, the bleed air pipe comprises a main air flow pipe, a plurality of auxiliary circulation pipes and a plurality of air valves, one end of the main air flow pipe is connected with an air outlet end of an indoor unit of the air conditioner, the other end of the main air flow pipe is closed, two ends of the plurality of auxiliary circulation pipes are fixedly connected with the main air flow pipe, the auxiliary circulation pipes are communicated with the main air flow pipe, the auxiliary circulation pipes surround the periphery of the electrical equipment, the air holes are formed in the auxiliary circulation pipes, the two ends of the auxiliary circulation pipes are provided with the air valves, the micro temperature sensing element is arranged on the main air flow pipe, and the air valves are electrically connected with the controller.

By adopting the technical scheme, the main airflow pipe is used for guiding cold air into the auxiliary circulating pipes, the plurality of auxiliary circulating pipes correspond to the plurality of electrical equipment in the cabinet body, and the cold air can be controlled to enter the auxiliary circulating pipes through the air valves; when the micro temperature sensing element detects that the temperature of certain electrical equipment is higher, the controller can control the air valve on the auxiliary circulating pipe on the peripheral side of the electrical equipment to be opened, so that cold air is blown to the electrical equipment. Because only need blow the air conditioning to the electrical equipment that the temperature is higher, consequently, can reduce the power of air conditioner internal unit, reduce the power consumption of air conditioner internal unit.

In a specific implementation mode, the auxiliary circulating pipe comprises a loop bent pipe and a plurality of auxiliary arc pipes, two ends of the loop bent pipe are fixedly connected to the main airflow pipe, two ends of the loop bent pipe are respectively provided with an air valve, the loop bent pipe surrounds the periphery of the electrical equipment, two ends of the auxiliary arc pipes are respectively fixedly connected to the loop bent pipe, the auxiliary arc pipes are erected on the outer side of the electrical equipment, and the air holes are formed in the loop bent pipe and the auxiliary arc pipes.

Through adopting above-mentioned technical scheme, set up return circuit return bend and supplementary arc pipe, can three-dimensional encircleing electrical equipment, can follow a plurality of angles and blow air conditioning to electrical equipment, help electrical equipment to accelerate the heat dissipation, improve the radiating effect of whole switch board.

In a specific implementation scheme, the micro temperature sensing element comprises an infrared thermometer and a contact thermometer, the infrared thermometer faces the electrical equipment, the contact thermometer abuts against the electrical equipment, and the infrared thermometer and the contact thermometer are both electrically connected with the controller.

By adopting the technical scheme, some electrical equipment can move when working, and some electrical equipment is in a static state when working. The infrared thermometer can measure temperature in a non-contact manner, and is favorable for measuring the temperature of dynamic electrical equipment; the contact type temperature measuring instrument can be inserted into the electrical equipment for measuring the temperature, is beneficial to measuring the temperature of static electrical equipment, and is more accurate in temperature measurement in the electrical equipment.

In a specific implementation scheme, the contact thermometer comprises a contact thermometer, a contact needle and a needle sleeve, the contact thermometer is fixedly installed on the main airflow pipe, one end of the needle sleeve is fixedly connected with the contact thermometer, the other end of the needle sleeve faces to the electrical equipment, the contact needle is arranged in the needle sleeve in a penetrating mode, one end of the contact needle is connected with the testing end of the contact thermometer, the other end of the contact needle abuts against the electrical equipment, and the contact thermometer is electrically connected with the controller.

Through adopting above-mentioned technical scheme, the contact pin can be with on the heat conduction to the contact thermometer on the electrical equipment, the temperature on the electrical equipment can be measured to the contact thermometer, the needle cover helps reducing the contact pin and loses in the in-process heat of conduction, helps improving measuring result's accuracy.

In a specific possible embodiment, the louver assembly includes a plurality of louver blades and a driving member for driving the louver blades to rotate, the louver blades are all rotatably connected to the peripheral wall of the window, the edges of two adjacent louver blades abut against each other, the driving member is mounted on the cabinet body, the louver blades are all connected to the driving member, and the driving member is electrically connected to the controller.

By adopting the technical scheme, the driving part drives the louver blades to rotate, and when two adjacent louver blades are mutually abutted, the louver blades can close the window, so that hot air outside the cabinet body is prevented from entering the cabinet body, and dust or mosquitoes outside the cabinet body can be prevented from flying into the cabinet body; when a gap exists between every two adjacent louver blades, the exhaust fan can blow hot air in the cabinet body to the outside of the cabinet body, and the heat dissipation of the cabinet body and the electrical equipment is accelerated.

In a specific possible implementation, the driving member includes an electric cylinder, a driving rod, a driving ring, and a connecting pin, the electric cylinder is fixedly connected to the cabinet body, the driving rod is fixedly connected to the telescopic end of the electric cylinder, the driving ring is fixedly connected to the driving rod, the connecting pin is fixedly connected to the louver, the connecting pin is inserted into the driving ring, and the electric cylinder is electrically connected to the controller.

Through adopting above-mentioned technical scheme, the electric cylinder promotes the actuating lever and removes, and the actuating lever synchronous motion is followed to the drive ring, and the drive ring can exert thrust to connecting pin for connecting pin and shutter plate synchronous rotation have realized thereby that the drive shutter plate rotates and open or the effect of closed window.

In a specific possible implementation scheme, a solar power generation panel is installed on the outer wall of the cabinet body, a storage battery is installed on the inner wall of the cabinet body, and the solar power generation panel and the controller are electrically connected with the storage battery.

By adopting the technical scheme, the solar power generation panel can convert solar energy into electric energy, and the electric energy is transmitted to the storage battery to be stored, so that electric energy is provided for the controller, the air conditioner indoor unit, the air conditioner outdoor unit, the exhaust fan and other electric equipment, and the energy utilization rate is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

according to the air conditioner, the controller, the air conditioner internal unit, the air conditioner external unit, the air guide pipe and the micro temperature sensing piece are arranged, so that the temperature of the electrical equipment is automatically sensed, and cold air is directly sprayed on the electrical equipment when the temperature of the electrical equipment is higher, so that the electrical equipment can be cooled more accurately, and the heat dissipation effect of the electrical equipment is improved;

the air guide pipe comprises a main air flow pipe, a plurality of auxiliary circulating pipes and a plurality of air valves, cold air can be controlled to enter different auxiliary circulating pipes through the air valves, and only the cold air is blown to electrical equipment with higher temperature, so that the power of the air conditioner indoor unit can be reduced, and the power consumption of the air conditioner indoor unit can be reduced;

the micro temperature sensing element comprises an infrared thermometer and a contact type thermometer, and can be used for measuring the temperature of dynamic electrical equipment and measuring the temperature of static electrical equipment; the shutter assembly comprises shutter blades and a driving piece used for driving the shutter blades to rotate, a window can be opened or closed, heat dissipation of the cabinet body can be accelerated when needed, the solar power generation panel and the storage battery can provide electric energy, and the energy utilization rate is improved.

Drawings

Fig. 1 is a schematic structural diagram of a power distribution cabinet capable of saving energy and dissipating heat in an embodiment of the present application.

Figure 2 is a schematic structural view of the bleed air duct in the embodiment of the present application.

Fig. 3 is an enlarged view at a in fig. 2.

Fig. 4 is a schematic structural diagram of a contact type temperature measuring instrument in an embodiment of the present application.

FIG. 5 is a schematic view of the structure of the blind assembly in the embodiment of the present application.

Fig. 6 is an enlarged view at B in fig. 5.

Fig. 7 is a schematic structural view of a side surface of a cabinet in an embodiment of the present application.

Fig. 8 is an enlarged view at C in fig. 7.

Description of reference numerals:

1. a cabinet body; 11. a window; 111. hole turning; 12. a solar power panel; 13. a storage battery; 14. a cabinet; 15. a door panel; 2. a blind assembly; 21. louver blades; 22. a drive member; 221. an electric cylinder; 222. a drive rod; 223. a drive ring; 224. a connecting needle; 3. an exhaust fan; 4. a controller; 5. an air conditioner indoor unit; 6. an air conditioner outdoor unit; 7. a bleed pipe; 71. air holes; 72. a primary gas flow tube; 73. a secondary circulation pipe; 731. a loop elbow; 732. an auxiliary arc tube; 74. an air valve; 8. a micro temperature sensing member; 81. an infrared thermometer; 82. a contact type temperature measuring instrument; 821. a contact thermometer; 822. a contact pin; 823. a needle sleeve.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

In the description of the present invention, it is to 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", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

The embodiment of the application discloses energy-conserving radiating switch board.

Referring to fig. 1, the power distribution cabinet with energy saving and heat dissipation includes a cabinet body 1, a louver assembly 2, an exhaust fan 3, a controller 4, an air conditioner internal unit 5, an air conditioner external unit 6, a bleed air pipe 7 and a micro temperature sensing unit 8. The cabinet body 1 is a rectangular box body, the side walls of the left side and the right side of the cabinet body 1 are respectively provided with a window 11, the shutter assembly 2 is positioned in the window 11, and the shutter assembly 2 is connected with the peripheral wall of the window 11; the exhaust electric fan 3, the controller 4, the air conditioner internal unit 5, the air guide pipe 7 and the micro temperature sensing element 8 are all positioned in the cabinet body 1, the exhaust electric fan 3 is arranged on the inner side wall of the cabinet body 1, and the exhaust electric fan 3 is opposite to the window 11. Air conditioner internal unit 5 is installed on the interior roof of the cabinet body 1, and bleed pipe 7 is installed at air conditioner internal unit 5's the end of giving vent to anger, installs a plurality of electrical equipment on the inner wall of the cabinet body 1, and bleed pipe 7 encircles in the week side of electrical equipment, and temperature-sensitive piece 8 is installed on bleed pipe 7 a little, and temperature-sensitive piece 8 a little has a plurality ofly, and temperature-sensitive piece 8 a little and electrical equipment one-to-one, and outer 6 of air conditioner is installed on the roof of the cabinet body 1.

Referring to fig. 1 and 2, the bleed air pipe 7 is provided with a plurality of air holes 71, and the exhaust electric fan 3, the louver assembly 2, the air conditioner internal unit 5, the air conditioner external unit 6 and the micro temperature sensing element 8 are all electrically connected with the controller 4. The controller 4 is operated to control the exhaust fan 3, the louver assembly 2, the air conditioner internal unit 5, the air conditioner external unit 6 and the micro temperature sensing element 8 to be opened, the air conditioner internal unit 5 blows cold air into the air guide pipe 7, the cold air blows onto the electrical equipment from the air hole 71, the louver assembly 2 opens the window 11, and the exhaust fan 3 blows hot air in the cabinet body 1 to the outside of the cabinet body 1.

Referring to fig. 1 and 2, the cabinet body 1 includes a cabinet 14 and a door panel 15, the cabinet 14 is a rectangular cabinet, an opening is provided on a front surface of the cabinet 14, and the door panel 15 is hinged on the cabinet 14; the windows 11 are provided on the side walls of the cabinet 14 on the left and right sides. The exhaust fan 3, the controller 4, the air conditioner indoor unit 5, the air guide pipe 7 and the micro temperature sensing element 8 are all arranged on the inner wall of the cabinet box 14, and the air conditioner outdoor unit 6 is riveted on the top wall of the cabinet box 14.

The solar power generation panel 12 is erected on the outer top wall of the cabinet box 14, the storage battery 13 is arranged in the cabinet box 14, the shell of the storage battery 13 is riveted with the inner wall of the cabinet box 14, and the controller 4 is electrically connected with the storage battery 13.

Referring to fig. 2 and 3, the bleed air duct 7 includes a main air flow duct 72, a secondary circulation duct 73, and an air valve 74. One end of the main airflow pipe 72 is a trumpet-shaped opening, the other end of the main airflow pipe 72 is closed, the trumpet-shaped opening end of the main airflow pipe 72 is riveted with the air outlet end of the air conditioner indoor unit 5, and the main airflow pipe 72 is erected in the cabinet box 14. The number of the sub circulation pipes 73 is the same as the number of the electric devices, all the sub circulation pipes 73 are welded to the main air flow pipe 72, the sub circulation pipes 73 correspond to the electric devices one by one, and the sub circulation pipes 73 are surrounded on the peripheral side of the electric devices.

The auxiliary circulation pipe 73 includes a loop elbow 731 and an auxiliary arc pipe 732, the loop elbow 731 is a U-shaped pipe, both ends of the loop elbow 731 are welded to the main airflow pipe 72, the loop elbow 731 is communicated with the main airflow pipe 72, and the loop elbow 731 surrounds the periphery of the electrical equipment. The number of the auxiliary arc pipes 732 is several, both ends of the auxiliary arc pipes 732 are welded to the loop bent pipe 731, the auxiliary arc pipes 732 are communicated with the loop bent pipe 731, and the auxiliary arc pipes 732 are erected outside the electrical equipment. The air hole 71 is provided on the loop bend 731 and the auxiliary arc tube 732, and the air hole 71 faces the electrical equipment.

An air valve 74 is installed at the air inlet end and the air outlet end of each loop elbow 731, the air valve 74 is an electromagnetic valve, and the air valve 74 is electrically connected with the controller 4.

Referring to fig. 3 and 4, the number of the micro temperature sensors 8 is equal to the number of the electric devices, and the micro temperature sensors 8 correspond to the electric devices one to one. The micro temperature sensing part 8 comprises an infrared thermometer 81 and a contact thermometer 82, the contact thermometer 82 comprises a contact thermometer 821, a contact needle 822 and a needle sleeve 823, the infrared thermometer 81 and the contact thermometer 821 are installed on the main airflow pipe 72, one end of the needle sleeve 823 is adhered to the testing end of the contact thermometer 821, and the other end of the needle sleeve 823 extends towards the direction close to the electrical equipment. The contact pin 822 is inserted in the needle sleeve 823, the needle sleeve 823 wraps the contact pin 822, the contact pin 822 is adhered to the inner wall of the needle sleeve 823, one end of the contact pin 822 abuts against the testing end of the contact thermometer 821, and the other end of the contact pin 822 extends in the direction close to the electrical equipment.

Starting an infrared thermometer 81 opposite to the dynamic electrical equipment, and keeping the contact pin 822 away from the dynamic electrical equipment, wherein the infrared thermometer 81 detects the temperature of the dynamic electrical equipment; the contact pin 822 is brought into contact with a stationary electrical device, the contact pin 822 transmits the temperature of the stationary electrical device to a contact thermometer, and the contact thermometer 821 detects the temperature of the stationary electrical device.

Referring to fig. 5 and 6, the blind assembly 2 includes a plurality of louvers 21 and a driving member 22, and the louvers 21 are located in the window 11.

Referring to fig. 7 and 8, the window 11 is provided with a rotation hole 111 on a circumferential wall thereof.

Referring to fig. 6 and 8, both ends of the louver blades 21 are inserted into the rotary holes 111 and abut against the hole walls, and the adjacent louver blades 21 are parallel to each other; the driving member 22 is installed on the outer wall of the cabinet 14, and the driving member 22 is connected to the louver 21.

The driving element 22 comprises an electric cylinder 221, a driving rod 222, a driving ring 223 and a connecting needle 224, the electric cylinder 221 is riveted on the outer wall of the cabinet 14, the electric cylinder 221 is electrically connected with the controller 4, the driving rod 222 is welded at the driving end of the electric cylinder 221, the driving ring 223 and the connecting needle 224 are the same as the number of the louver blades 21, the driving ring 223 is welded on the driving rod 222, the connecting needle 224 is in one-to-one correspondence with the louver blades 21, the connecting needle 224 is welded on the louver blades 21, the connecting needle 224 is inserted into the driving ring 223, and the connecting needle 224 is in one-to-one correspondence with the driving ring 223.

The electric cylinder 221 is electrically connected with the controller 4, the electric cylinder 221 pushes the driving rod 222 to move, the driving ring 223 follows the driving rod 222 to move synchronously, the driving ring 223 pushes the connecting needle 224 to move, and the connecting needle 224 and the louver blades 21 rotate synchronously.

The implementation principle of an energy-saving and heat-dissipating power distribution cabinet in the embodiment of the application is as follows: the solar power generation panel 12 converts solar energy into electric energy, the electric energy is stored in the storage battery 13, and the storage battery 13 supplies power to the controller 4.

The infrared thermometer 81 detects the temperature of the dynamic electrical device, the contact thermometer 82 detects the temperature of the static electrical device, and both the infrared thermometer 81 and the contact thermometer 82 transmit the detected temperatures to the controller 4.

When the temperature of a certain electrical device is too high, the controller 4 starts the air conditioner internal unit 5 and the air conditioner external unit 6, the air conditioner internal unit 5 blows cold air into the main airflow pipe 72, the controller 4 starts the air valve 74 on the loop bent pipe 731 corresponding to the electrical device with the too high temperature, the cold air enters the loop bent pipe 731 and the auxiliary arc pipe 732, and the cold air is sprayed onto the electrical device with the too high temperature from the air hole 71.

When the hot air in the cabinet 14 needs to be exhausted, the controller 4 starts the electric cylinder 221, the electric cylinder 221 pushes the driving rod 222 to move, the driving ring 223 pushes the connecting pin 224 and the louver blades 21 to rotate, a gap is formed between the adjacent louver blades 21, the controller 4 starts the exhaust electric fan 3 again, and the exhaust electric fan 3 blows the hot air in the cabinet 14 out of the cabinet 14.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an energy-conserving radiating switch board, includes the cabinet body (1), shutter subassembly (2) and exhaust electric fan (3), its characterized in that: the air conditioner further comprises a controller (4), an air conditioner internal unit (5), an air conditioner external unit (6), a gas-leading pipe (7) used for surrounding the peripheral side of the electrical equipment and a micro temperature-sensing piece (8) used for sensing the temperature of the electrical equipment, a window (11) is arranged on the cabinet body (1), the shutter component (2) is arranged on the peripheral wall of the window (11), the exhaust electric fan (3) is arranged on the inner wall of the cabinet body (1), the exhaust electric fan (3) faces the window (11), the controller (4) and the air conditioner internal unit (5) are both arranged on the inner wall of the cabinet body (1), the air conditioner external unit (6) is arranged on the outer wall of the cabinet body (1), the air conditioner internal unit (5) is connected with the air conditioner external unit (6), the gas-leading pipe (7) is arranged in the cabinet body (1), one end of the gas-leading pipe (7) is connected with the air inlet end of the air conditioner internal unit (5), the other end of bleed pipe (7) is sealed, be equipped with on bleed pipe (7) towards electrical equipment's gas pocket (71), install on bleed pipe (7) temperature-sensing piece (8) a little, temperature-sensing piece (8) a little is towards electrical equipment, shutter subassembly (2), exhaust fan (3), temperature-sensing piece (8 a little and air conditioner internal unit (5) all are connected with controller (4) electricity.

2. The power distribution cabinet with energy conservation and heat dissipation as defined in claim 1, wherein: the air guide pipe (7) comprises a main air flow pipe (72), a plurality of auxiliary circulation pipes (73) and a plurality of air valves (74), one end of the main air flow pipe (72) is connected with an air outlet end of an air conditioner indoor unit (5), the other end of the main air flow pipe (72) is sealed, two ends of each of the plurality of auxiliary circulation pipes (73) are fixedly connected with the main air flow pipe (72), the auxiliary circulation pipes (73) are communicated with the main air flow pipe (72), the auxiliary circulation pipes (73) surround the periphery of the electric equipment, the air holes (71) are formed in the auxiliary circulation pipes (73), the air valves (74) are mounted at two ends of each of the auxiliary circulation pipes (73), the micro temperature sensing part (8) is mounted on the main air flow pipe (72), and the air valves (74) are electrically connected with the controller (4).

3. The power distribution cabinet with energy conservation and heat dissipation according to claim 2, characterized in that: the auxiliary circulating pipe (73) comprises a loop bent pipe (731) and a plurality of auxiliary arc pipes (732), two ends of the loop bent pipe (731) are fixedly connected to the main airflow pipe (72), two ends of the loop bent pipe (731) are provided with air valves (74), the loop bent pipe (731) surrounds the periphery of the electrical equipment, two ends of the auxiliary arc pipes (732) are fixedly connected to the loop bent pipe (731), the auxiliary arc pipes (732) are erected on the outer side of the electrical equipment, and the air holes (71) are formed in the loop bent pipe (731) and the auxiliary arc pipes (732).

4. The power distribution cabinet with energy conservation and heat dissipation as defined in claim 1, wherein: the micro temperature sensing part (8) comprises an infrared thermometer (81) and a contact type thermometer (82), the infrared thermometer (81) faces to the electrical equipment, the contact type thermometer (82) is abutted against the electrical equipment, and the infrared thermometer (81) and the contact type thermometer (82) are both electrically connected with the controller (4).

5. The power distribution cabinet with energy conservation and heat dissipation according to claim 4, characterized in that: the contact type thermometer (82) comprises a contact type thermometer (821), a contact needle (822) and a needle sleeve (823), the contact type thermometer (821) is fixedly installed on the main airflow pipe (72), one end of the needle sleeve (823) is fixedly connected with the contact type thermometer (821), the other end of the needle sleeve (823) faces towards electrical equipment, the contact needle (822) penetrates through the needle sleeve (823), one end of the contact needle (822) is connected with a testing end of the contact type thermometer (821), the other end of the contact needle (822) abuts against the electrical equipment, and the contact type thermometer (821) is electrically connected with the controller (4).

6. The power distribution cabinet with energy conservation and heat dissipation as defined in claim 1, wherein: shutter subassembly (2) include shutter plate (21) and be used for driving shutter plate (21) pivoted driving piece (22), shutter plate (21) have a plurality of, shutter plate (21) all rotate to be connected on the perisporium of window (11), adjacent two the edge butt each other of shutter plate (21), driving piece (22) are installed on the cabinet body (1), shutter plate (21) all link to each other with driving piece (22), driving piece (22) are connected with controller (4) electricity.

7. The power distribution cabinet with energy conservation and heat dissipation according to claim 6, characterized in that: the driving piece (22) comprises an electric cylinder (221), a driving rod (222), a driving ring (223) and a connecting needle (224), the electric cylinder (221) is fixedly connected to the cabinet body (1), the driving rod (222) is fixedly connected to the telescopic end of the electric cylinder (221), the driving ring (223) is fixedly connected to the driving rod (222), the connecting needle (224) is fixedly connected to the louver blade (21), the connecting needle (224) is inserted into the driving ring (223), and the electric cylinder (221) is electrically connected with the controller (4).

8. The power distribution cabinet with energy conservation and heat dissipation as defined in claim 1, wherein: install solar panel (12) on the outer wall of the cabinet body (1), install battery (13) on the cabinet body (1) inner wall, solar panel (12) and controller (4) are connected with battery (13) electricity.