Heat dissipation type high-low voltage power distribution cabinet

Abstract

The invention discloses a heat dissipation type high-low voltage power distribution cabinet, which comprises a cabinet body, and is characterized in that the cabinet body comprises a front box body and a rear box body, and the front box body is fixedly connected with the rear box body; the front box body comprises a first cavity, a second cavity, a third cavity, a fourth cavity and an arc-shaped ventilation pipe. The first cavity, the second cavity, the third cavity and the fourth cavity are arranged around the arc-shaped face of the arc-shaped ventilation pipe in a surrounding mode. The arc-shaped ventilation pipe is provided with a ventilation hole and a threading groove; an exhaust fan and an air feeder are arranged in the rear box body, and both the exhaust fan and the air feeder are communicated with the arc ventilation pipe; electrical element mounting holes are formed in vertical partition plates between the first chamber and the rear box body, between the second chamber and the third chamber and between the fourth chamber and the rear box body; the vertical partition plates between the first chamber and the second chamber and between the third chamber and the fourth chamber are of hollow structures, and phase change materials are arranged in the hollow structures; according to the invention, the prismatic design is combined with the phase-change material hollow partition plate and the fan, so that the performance of the power distribution cabinet is ensured, and the heat dissipation efficiency and energy efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution cabinets, and more particularly to a heat dissipation type high and low voltage power distribution cabinet. Background Art

[0002] High and low voltage distribution cabinets are an important part of the power supply system. They are mainly used for the distribution, control, metering and cable connection of electric energy. Such equipment is usually provided with high voltage power by the power supply bureau or substation. After the voltage is stepped down by the transformer, the low voltage side is supplied to users through the distribution cabinet. High and low voltage distribution cabinets are not only used in industrial production environments, but also key facilities in the power supply systems of commercial buildings and residential areas.

[0003] At present, there are some shortcomings in the practical application of high and low voltage distribution cabinets on the market, which are mainly manifested in the following aspects:

[0004] Heat dissipation problem: Since internal electrical components generate heat during operation, poor heat dissipation will cause the device temperature to be too high, which will affect the stability and service life of the electrical components and may even cause safety accidents;

[0005] High energy consumption: At present, the inner cavity of high and low voltage distribution cabinets is rectangular. In order to ensure the heat dissipation of multiple chambers such as high-voltage chamber and low-voltage chamber in the high and low voltage distribution cabinet, multiple cooling fans or cooling pipes are required to dissipate heat at the back end. When multiple cooling devices are turned on at the same time to dissipate heat together, more energy is consumed.

[0006] Automation level: With the development of smart grids, the requirements for automated control of distribution cabinets are getting higher and higher, but some existing distribution cabinets still use more traditional manual control methods and lack automatic control.

[0007] Therefore, how to provide a high and low voltage distribution cabinet with high heat dissipation efficiency, low energy consumption and automatic control is a problem that technical personnel in this field need to solve urgently. Summary of the invention

[0008] In view of this, the present invention provides a heat dissipation type high and low voltage distribution cabinet to solve some of the technical problems mentioned in the background technology.

[0009] In order to achieve the above object, the present invention adopts the following technical solution:

[0010] A heat dissipation type high and low voltage power distribution cabinet comprises a cabinet body, wherein the cabinet body comprises a front box body and a rear box body, and the front box body is fixedly connected to the rear box body;

[0011] The front box body comprises a first chamber, a second chamber, a third chamber, a fourth chamber and an arc-shaped ventilation pipe, wherein the first chamber, the second chamber, the third chamber and the fourth chamber are arranged around the arc-shaped surface of the arc-shaped ventilation pipe;

[0012] The arc-shaped ventilation pipe is provided with ventilation holes and wire threading grooves;

[0013] An exhaust fan and a blower are arranged in the rear box, and both the exhaust fan and the blower are connected to the arc-shaped ventilation pipe;

[0014] The vertical partitions between the first chamber and the rear box, between the second chamber and the third chamber, and between the fourth chamber and the rear box are provided with electrical component mounting holes;

[0015] The vertical partitions between the first chamber and the second chamber, and between the third chamber and the fourth chamber are hollow structures, and phase change materials are arranged inside.

[0016] Preferably, temperature sensors are provided in the first chamber, the second chamber, the third chamber and the fourth chamber, and a PLC controller is provided in the rear box. The PLC controller is respectively connected to the temperature sensors, the exhaust fan and the supply fan. The PLC controller compares and judges the temperature values ​​collected by the temperature sensors in each chamber, and controls the exhaust fan and the supply fan to run alternately or simultaneously.

[0017] Preferably, the PLC controller compares and judges the temperature values ​​collected by the temperature sensors in each chamber, and the specific contents of controlling the exhaust fan and the supply fan to run alternately or simultaneously include:

[0018] Preset a first threshold and a second threshold, collect temperature values ​​of temperature sensors in each chamber and calculate an average temperature;

[0019] If the average temperature is lower than the first threshold, the PLC controller turns off the exhaust fan and the supply fan;

[0020] If the average temperature is between the first threshold and the second threshold, the PLC controller only turns on the blower;

[0021] If the maximum temperature exceeds the second threshold, the PLC controller turns on the exhaust fan and the supply fan at the same time.

[0022] Preferably, the exhaust fan is connected to the arc ventilation duct through a first pipe, and the supply fan is connected to the arc ventilation duct through a second pipe. The first pipe is provided with a first control valve, and the second pipe is provided with a second control valve. Both the first control valve and the second control valve are connected to the PLC control.

[0023] Preferably, the exhaust fan and the first duct are arranged at the upper part of the rear box body, and the air supply fan and the second duct are arranged at the lower part of the rear box body.

[0024] Preferably, the phase change material in the vertical partition between the first chamber and the second chamber, and between the third chamber and the fourth chamber includes but is not limited to a salt water compound, an organic compound or an inorganic salt.

[0025] Preferably, the first chamber, the second chamber, the third chamber, the fourth chamber and the rear box are all provided with a switch door, and an indication component is installed on the switch door.

[0026] Preferably, a fixing frame is provided on the top of the cabinet, a ceiling is provided on the upper part of the fixing frame, and a filter assembly is provided around the side of the fixing frame. The filter assembly is a filter plate, and the filter plate filters and absorbs dust entering the air.

[0027] Preferably, the space in the ceiling is connected to the rear box.

[0028] Preferably, the power equipment components are respectively arranged in different chambers according to their functions and voltage levels.

[0029] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a heat dissipation type high and low voltage distribution cabinet, which is combined with a prismatic shape design to improve space utilization, and make the distribution cabinet more compact and adaptable to specific space layout requirements; the hollow partition design combined with phase change materials is an innovative and practical method, which can improve the heat dissipation efficiency and energy efficiency while ensuring the performance of the distribution cabinet; the present invention does not need to set up multiple sets of heat dissipation components, relies on the automatic control of the upper exhaust fan and the lower supply fan, and makes full use of the flow of hot and cold air to achieve heat dissipation of multiple chambers in the high and low voltage distribution cabinet, and does not need to increase redundant heat dissipation duct connections, thereby reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0031] Figure 1 A schematic diagram of the overall structure of a heat dissipation type high and low voltage distribution cabinet provided by the present invention;

[0032] Figure 2 A front view of a heat dissipation type high and low voltage distribution cabinet provided by the present invention;

[0033] Figure 3 A schematic diagram of a right side view of a heat dissipation type high and low voltage distribution cabinet provided by the present invention;

[0034] Figure 4 A schematic diagram of the interior of the front box of a heat dissipation type high and low voltage distribution cabinet provided by the present invention;

[0035] Figure 5 A top view of a heat dissipation type high and low voltage distribution cabinet provided by the present invention;

[0036] Figure 6 A schematic diagram of the interior of the rear box of a heat dissipation type high and low voltage distribution cabinet provided by the present invention;

[0037] Among them, 1-front box body, 2-rear box body, 3-first chamber, 4-second chamber, 5-third chamber, 6-fourth chamber, 7-arc ventilation pipe, 8-ventilation hole, 9-wire groove, 10-exhaust fan, 11-supply fan, 12-electrical component mounting plate, 13-heat dissipation baffle, 14-temperature sensor, 15-PLC controller, 16-air outlet slot, 17-air inlet slot, 18-indicator component, 19-ventilation slot, 20-fixed frame, 21-ceiling, 22-filter component, 23-first pipeline, 24-second pipeline, 25-first control valve, 26-second control valve. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The embodiment of the present invention discloses a heat dissipation type high and low voltage distribution cabinet, comprising a cabinet body, wherein the cabinet body comprises a front box body 1 and a rear box body 2, wherein the front box body 1 is fixedly connected to the rear box body 2;

[0040] The front box body 1 includes a first chamber 3, a second chamber 4, a third chamber 5, a fourth chamber 6 and an arc-shaped ventilation pipe 7. The first chamber 3, the second chamber 4, the third chamber 5 and the fourth chamber 6 are arranged around the arc-shaped surface of the arc-shaped ventilation pipe 7;

[0041] The arc-shaped ventilation pipe 7 is provided with ventilation holes 8 and threading grooves 9;

[0042] An exhaust fan 10 and a blower 11 are provided in the rear box body 2, and both the exhaust fan 10 and the blower 11 are connected to the arc-shaped ventilation pipe 7;

[0043] The vertical partitions between the first chamber 3 and the rear box body 2, between the second chamber 4 and the third chamber 5, and between the fourth chamber 6 and the rear box body 2 are provided with electrical component mounting holes, which are electrical component mounting plates 12;

[0044] The vertical partitions between the first chamber 3 and the second chamber 4 and between the third chamber 5 and the fourth chamber 6 are hollow structures with phase change materials disposed therein, and are heat dissipation partitions 13 .

[0045] In order to further implement the above technical scheme, temperature sensors 14 are provided in the first chamber 3, the second chamber 4, the third chamber 5 and the fourth chamber 6, and a PLC controller 15 is provided in the rear box 2. The PLC controller 15 is respectively connected to the temperature sensor 14, the exhaust fan 10 and the air supply fan 11. The PLC controller 15 compares and judges the temperature values ​​collected by the temperature sensors 14 in each chamber, and controls the exhaust fan 10 and the air supply fan 11 to run alternately or simultaneously.

[0046] In this embodiment, the temperature sensor 14 is installed in a key position of each chamber, such as a position close to a heating element or a central position inside the cabinet; the number of sensors is determined according to the size of the cabinet and the number of internal heating elements. Generally, at least one temperature sensor 14 is installed in each chamber.

[0047] In order to further implement the above technical solution, the PLC controller 15 compares and judges the temperature values ​​collected by the temperature sensors 14 in each chamber, and controls the exhaust fan 10 and the air supply fan 11 to run alternately or simultaneously. The specific contents include:

[0048] A first threshold and a second threshold are preset, the temperature values ​​of the temperature sensors 14 in each chamber are collected and the average temperature is calculated;

[0049] If the average temperature is lower than the first threshold, the PLC controller 15 turns off the exhaust fan 10 and the supply fan 11;

[0050] If the average temperature is between the first threshold and the second threshold, the PLC controller 15 only turns on the blower 11;

[0051] If the maximum temperature exceeds the second threshold, the PLC controller 15 turns on the exhaust fan 10 and the supply fan 11 at the same time.

[0052] In order to further implement the above technical solution, the exhaust fan 10 is connected to the arc ventilation duct 7 through the first pipe 23, and the air supply fan 11 is connected to the arc ventilation duct 7 through the second pipe 24. The first pipe 23 is provided with a first control valve 25, and the second pipe 24 is provided with a second control valve 26. The first control valve 25 and the second control valve 26 are both connected to the PLC controller 15.

[0053] In order to further implement the above technical solution, the exhaust fan 10 and the first pipeline are arranged at the upper part of the rear box body 2, and the air supply fan 11 and the second pipeline are arranged at the lower part of the rear box body 2.

[0054] In this embodiment, the rear box body 2 is provided with an air outlet slot 16 and an air inlet slot 17 , the exhaust fan 10 is fixedly mounted on the air outlet slot 16 , and the air supply fan 11 is fixedly mounted on the air inlet slot 17 .

[0055] In order to further implement the above technical solution, the phase change materials in the vertical partitions between the first chamber 3 and the second chamber 4, and between the third chamber 5 and the fourth chamber 6 include but are not limited to salt water compounds, organic compounds or inorganic salts.

[0056] In this embodiment, the hollow partition design combined with phase change material has the following beneficial effects: improving heat dissipation efficiency: the phase change material can absorb excess heat, help reduce the internal temperature of the distribution cabinet, and extend the life of the equipment; energy saving and emission reduction: by improving heat dissipation efficiency, the use of air conditioning or other cooling systems can be reduced, thereby reducing energy consumption; enhancing safety: effective temperature control measures can help prevent safety accidents caused by overheating.

[0057] In practical applications, the advantages of salt hydrates are high latent heat value, relatively low cost, and good chemical stability. They are suitable for distribution cabinets that need to work in a wide temperature range, such as Na2SO4·10H2O (sodium sulfate decahydrate). The advantages of organic compounds are good chemical stability, low corrosion, and a wide phase change temperature range. They are suitable for distribution cabinets that need to work in a lower temperature range, such as paraffin compounds and fatty acid esters. The advantages of inorganic salts are high latent heat value, low cost, and good chemical stability. They are suitable for distribution cabinets that need to work in a higher temperature range, such as CaCl2·6H2O (calcium chloride hexahydrate) and ZnCl2·2H2O (zinc chloride dihydrate).

[0058] In order to further implement the above technical solution, the first chamber 3, the second chamber 4, the third chamber 5, the fourth chamber 6 and the rear box body 2 are all provided with a switch door, and an indication component 18 is installed on the switch door.

[0059] In practical applications, each switch door is provided with a ventilation slot 19 .

[0060] In order to further implement the above technical solution, a fixing frame 20 is provided on the top of the cabinet, a ceiling 21 is provided on the upper part of the fixing frame 20, and a filter assembly 22 is provided around the side of the fixing frame 20. The filter assembly 22 is a filter plate, which filters and absorbs dust entering the air.

[0061] In order to further implement the above technical solution, the space in the ceiling 21 is communicated with the rear box body 2 .

[0062] In order to further implement the above technical solution, the power equipment components are respectively arranged in different chambers according to their functions and voltage levels.

[0063] In this embodiment, high-voltage equipment components are arranged in the first chamber 3, low-voltage equipment components are arranged in the fourth chamber 6, metering equipment components and control equipment components are arranged in the second chamber 4 and the third chamber 5, and the connecting wires of the equipment in each chamber are connected through the wire groove 9 in the arc ventilation pipe 7.

[0064] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0065] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one 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 present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heat dissipation type high and low voltage distribution cabinet, comprising a cabinet body, characterized in that: The cabinet includes a front box body and a rear box body, and the front box body is fixedly connected to the rear box body; The front box body comprises a first chamber, a second chamber, a third chamber, a fourth chamber and an arc-shaped ventilation pipe, wherein the first chamber, the second chamber, the third chamber and the fourth chamber are arranged around the arc-shaped surface of the arc-shaped ventilation pipe; The arc-shaped ventilation pipe is provided with ventilation holes and wire threading grooves; An exhaust fan and a blower are arranged in the rear box, and both the exhaust fan and the blower are connected to the arc-shaped ventilation pipe; The vertical partitions between the first chamber and the rear box, between the second chamber and the third chamber, and between the fourth chamber and the rear box are provided with electrical component mounting holes; The vertical partitions between the first chamber and the second chamber, and between the third chamber and the fourth chamber are hollow structures, and phase change materials are arranged inside.

2. A heat dissipation type high and low voltage distribution cabinet according to claim 1, characterized in that: Temperature sensors are provided in the first chamber, the second chamber, the third chamber and the fourth chamber, and a PLC controller is provided in the rear box. The PLC controller is respectively connected to the temperature sensor, the exhaust fan and the supply fan. The PLC controller compares and judges the temperature values ​​collected by the temperature sensors in each chamber, and controls the exhaust fan and the supply fan to run alternately or simultaneously.

3. A heat dissipation type high and low voltage distribution cabinet according to claim 2, characterized in that: The PLC controller compares and judges the temperature values ​​collected by the temperature sensors in each chamber, and controls the exhaust fan and the supply fan to run alternately or simultaneously. The specific contents include: Preset a first threshold and a second threshold, collect temperature values ​​of temperature sensors in each chamber and calculate an average temperature; If the average temperature is lower than the first threshold, the PLC controller turns off the exhaust fan and the supply fan; If the average temperature is between the first threshold and the second threshold, the PLC controller only turns on the blower; If the maximum temperature exceeds the second threshold, the PLC controller turns on the exhaust fan and the supply fan at the same time.

4. A heat dissipation type high and low voltage distribution cabinet according to claim 2, characterized in that: The exhaust fan is connected to the arc ventilation duct through a first pipeline, and the supply fan is connected to the arc ventilation duct through a second pipeline. The first pipeline is provided with a first control valve, and the second pipeline is provided with a second control valve. Both the first control valve and the second control valve are connected to the PLC control.

5. A heat dissipation type high and low voltage distribution cabinet according to claim 4, characterized in that: The exhaust fan and the first pipeline are arranged at the upper part of the rear box body, and the air supply fan and the second pipeline are arranged at the lower part of the rear box body.

6. A heat dissipation type high and low voltage distribution cabinet according to claim 1, characterized in that: The phase change materials in the vertical partitions between the first chamber and the second chamber, and between the third chamber and the fourth chamber include, but are not limited to, salt water compounds, organic compounds, or inorganic salts.

7. A heat dissipation type high and low voltage distribution cabinet according to claim 1, characterized in that: The first chamber, the second chamber, the third chamber, the fourth chamber and the rear box body are all provided with switch doors, and indicating components are installed on the switch doors.

8. The heat dissipation type high and low voltage distribution cabinet according to claim 1, characterized in that: A fixing frame is arranged on the top of the cabinet, a ceiling is arranged on the upper part of the fixing frame, a filter assembly is arranged around the side of the fixing frame, and the filter assembly is a filter plate, which filters and absorbs dust entering the air.

9. A heat dissipation type high and low voltage distribution cabinet according to claim 8, characterized in that: The space in the ceiling is communicated with the rear box.

10. A heat dissipation type high and low voltage distribution cabinet according to claim 1, characterized in that: The power equipment components are arranged in different chambers according to their functions and voltage levels.

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