A high- and low-voltage power distribution cabinet with high efficiency and energy saving

Abstract

The present invention relates to the technical field of power distribution cabinets, and specifically to an efficient and energy-saving high and low voltage power distribution cabinet, comprising a bottom plate, an inner shell is mounted on the bottom plate, a support plate and a transformer mounted on the support plate are arranged in the inner shell, and a temperature sensor is also arranged in the inner shell; a water storage mechanism, an air cooling mechanism and a water wheel driving mechanism are also arranged on the bottom plate; an outer shell including the inner shell is mounted on the bottom plate, and a gap is provided between the inner shell and the outer shell; the water storage mechanism is arranged on the bottom plate and used to store rainwater, and the water storage mechanism is located above the inner shell; the air cooling mechanism is arranged on the inner shell and used to control the flow of air; the water wheel driving mechanism is arranged on the outer shell and used to drive the air cooling mechanism. The present invention realizes the function of reducing the temperature of the transformer without relying on power supply, achieves the effect of energy saving and environmental protection, and solves the problem that traditional power distribution cabinets rely on power supply and consume a lot of energy.

Description

Technical Field

[0001] The invention relates to the technical field of power distribution cabinets, and in particular to a high- and low-voltage power distribution cabinet with high efficiency and energy saving. Background Art

[0002] Temperature control of the distribution cabinet is an important measure to ensure the normal operation of the distribution cabinet and extend its service life. The temperature control of the distribution cabinet is usually carried out through air conditioning control, temperature and humidity sensor detection, and online temperature measurement of electrical connection. However, the current temperature control of the distribution cabinet usually consumes a lot of energy and has limited cooling efficiency. It is not only costly, but also inconsistent with the existing green development concept.

[0003] To this end, Chinese patent publication number CN208521732U discloses an energy-saving distribution cabinet air conditioning device, which controls the cold air path by setting a fixed plate, an upper baffle and a lower baffle to prevent the cold air from blowing directly to the inside of the shell, enhance the heat dissipation effect of the transformer, avoid unnecessary energy waste, and prevent fire caused by uneven heat dissipation.

[0004] However, it still requires a lot of energy supply during operation, especially when the transformer is running at low power, the heat generated is small. When the air conditioner is used to supply cold air for cooling, although the cooling efficiency is improved, the operating temperature of the transformer will be reduced to below the threshold. At this time, the temperature control of the transformer can be completed only by increasing the air flow rate and improving the heat dissipation efficiency, which leads to unnecessary energy consumption and greatly increases the operating and maintenance costs. Summary of the invention

[0005] In view of the above problems, a high-efficiency and energy-saving high and low voltage distribution cabinet is provided, which solves the problem that the traditional distribution cabinet relies on power supply and consumes a lot of energy through a water storage mechanism, an air cooling mechanism and a water wheel drive mechanism.

[0006] In order to solve the problems of the prior art, the present invention provides an efficient and energy-saving high and low voltage distribution cabinet, comprising a base plate, an inner shell is installed on the base plate, a support plate and a transformer installed on the support plate are arranged in the inner shell, and a temperature sensor is also arranged in the inner shell; a water storage mechanism, an air cooling mechanism and a water wheel driving mechanism are also arranged on the base plate; an outer shell including the inner shell is installed on the base plate, and a gap is provided between the inner shell and the outer shell; the water storage mechanism is arranged on the base plate and is used to accumulate rainwater, and the water storage mechanism is located above the inner shell; the air cooling mechanism is arranged on the inner shell and is used to control the flow of air; the water wheel driving mechanism is arranged on the outer shell and is used to drive the air cooling mechanism; in the working state, after the water storage mechanism accumulates rainwater, when the temperature sensor senses that the temperature is higher than the threshold value, the water storage mechanism starts to drain water, and the water wheel driving mechanism converts the potential energy of the water flow into mechanical energy to drive the air cooling mechanism, drives the air cooling mechanism to generate airflow, and at the same time, the water flow discharged by the water storage mechanism passes through the outer surface of the inner shell, taking away the heat inside the inner shell.

[0007] Preferably, the water storage mechanism includes a water reservoir and a support rod; the bottom of the water reservoir is connected to the bottom plate through the support rod; and the bottom of the water reservoir is connected to the inner shell.

[0008] Preferably, a water storage tank is installed in the outer shell, and a water guide edge is provided on one side of the water storage tank close to the inner shell; a control component for controlling drainage is provided in the water storage tank; in a working state, when the temperature sensor senses that the temperature inside the inner shell is higher than the threshold value, the control component controls the accumulated water in the water storage tank to flow into the water storage tank through the water wheel driving mechanism, and when the water level of the accumulated water in the water storage tank rises to the water guide edge, the accumulated water is guided by the water guide edge to form a water curtain and flows to the outer surface of the inner shell.

[0009] Preferably, the air cooling mechanism includes a bracket and a fan.

[0010] Preferably, an overflow pipe is also installed in the water reservoir, and the overflow pipe is connected with the connecting pipe and the guide pipe; when the water level in the water reservoir is higher than the overflow pipe, it flows into the guide pipe through the top of the overflow pipe.

[0011] Preferably, a filter grid for intercepting impurities is installed at the top of the overflow pipe.

[0012] Preferably, air intake grilles are provided at the bottom of the inner shell and the outer shell; an exhaust cabin connected to the interior of the inner shell is installed at the top of the inner shell; and an exhaust passage for exhaust is provided on the exhaust cabin.

[0013] Preferably, a protective plate is provided on the exhaust cabin for preventing rainwater from entering the exhaust cabin from the exhaust passage, and a gap is provided between the protective plate and the outer surface of the exhaust cabin for air flow to pass through.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention realizes the function of reducing the temperature of the transformer without relying on power supply through the water storage mechanism, the air cooling mechanism and the water wheel driving mechanism, thereby achieving the effect of energy saving and environmental protection. In addition, the double cooling is performed through water flow and air flow, and the temperature of the transformer can be quickly reduced when the temperature rises, thus solving the problem that the traditional distribution cabinet relies on power supply and consumes a lot of energy.

[0016] 2. The present invention realizes the function of cooling the inner shell by water flow through the water storage tank, the water guide edge and the control component, thereby achieving the effect of uniformly cooling the inner shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of a high- and low-voltage distribution cabinet that is highly efficient and energy-saving.

[0018] Figure 2The invention is a three-dimensional schematic diagram of an inner shell, an outer shell, an air cooling mechanism and a water wheel driving mechanism in a high- and low-voltage power distribution cabinet with high efficiency and energy saving.

[0019] Figure 3 It is a three-dimensional schematic diagram of a water storage tank and a water wheel drive mechanism in a high- and low-voltage distribution cabinet with high efficiency and energy saving.

[0020] Figure 4 The present invention is a three-dimensional schematic diagram of a water storage mechanism of a high- and low-voltage power distribution cabinet with high efficiency and energy saving.

[0021] Figure 5 yes Figure 4 A local enlarged schematic diagram of point A in the middle.

[0022] Figure 6 It is a three-dimensional schematic diagram of the coordination of a water storage tank and an installation box of a high- and low-voltage distribution cabinet with high efficiency and energy saving.

[0023] Figure 7 yes Figure 6 A local enlarged schematic diagram of point B in the middle.

[0024] Figure 8 It is a three-dimensional schematic diagram of the cooperation between the water wheel drive mechanism and the air cooling mechanism of the high and low voltage distribution cabinet with high efficiency and energy saving.

[0025] Fig. 9 yes Figure 8 A partial enlarged schematic diagram of point C in the middle.

[0026] Fig.10 The invention is a cross-sectional schematic diagram of a high-voltage and low-voltage power distribution cabinet with high efficiency and energy saving.

[0027] The numbers in the figure are: 1-bottom plate; 11-inner shell; 111-support plate; 112-transformer; 12-outer shell; 13-air intake grille; 14-exhaust compartment; 141-protective plate; 2-water storage mechanism; 21-water reservoir; 22-support rod; 23-water storage tank; 231-water guide edge; 232-support ring; 233-reinforcement rib; 24-control component; 241-connecting pipe; 242-solenoid valve; 243-guide pipe; 244-overflow pipe; 2441-filter grille; 3-air cooling mechanism; 31-bracket; 32-fan; 4-water wheel drive mechanism; 41-installation box; 42-first rotating shaft; 43-micro water wheel; 44-transmission component; 441-second rotating shaft; 442-pulley; 443-transmission belt; 444-bevel gear. DETAILED DESCRIPTION

[0028] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] Reference Figure 1-Figure 3: An efficient and energy-saving high and low voltage distribution cabinet, comprising a base plate 1, an inner shell 11 is installed on the base plate 1, a support plate 111 and a transformer 112 installed on the support plate 111 are arranged in the inner shell 11, and a temperature sensor is also arranged in the inner shell 11; a water storage mechanism 2, an air cooling mechanism 3 and a water wheel driving mechanism 4 are also arranged on the base plate 1; an outer shell 12 including the inner shell 11 is installed on the base plate 1, and a gap is provided between the inner shell 11 and the outer shell 12; the water storage mechanism 2 is arranged on the base plate 1 and is used to accumulate rainwater, and the water storage mechanism 2 is located in the inner shell The air cooling mechanism 3 is arranged on the inner shell 11 and is used to control the air flow; the water wheel driving mechanism 4 is arranged on the outer shell 12 and is used to drive the air cooling mechanism 3; in the working state, after the water storage mechanism 2 accumulates rainwater, when the temperature sensor senses that the temperature is higher than the threshold, the water storage mechanism 2 starts to drain water, and the water wheel driving mechanism 4 converts the potential energy of the water flow into mechanical energy to drive the air cooling mechanism 3, drives the air cooling mechanism 3 to generate air flow, and at the same time, the water flow discharged by the water storage mechanism 2 passes through the outer surface of the inner shell 11, taking away the heat inside the inner shell 11.

[0030] The present invention realizes the function of reducing the temperature of the transformer 112 without relying on power supply through the water storage mechanism 2, the air cooling mechanism 3 and the water wheel driving mechanism 4, thereby achieving energy saving and environmental protection effects, and performs dual cooling through water flow and air flow, which can quickly reduce the temperature of the transformer 112 when the temperature rises, thereby solving the problem that traditional distribution cabinets rely on power supply and consume a lot of energy. The inner shell 11 is preferably made of an aluminum alloy with good thermal conductivity. During the operation of the power distribution cabinet, the water storage mechanism 2 will store rainwater, and when there is insufficient rainwater, the operator can cooperate with other drainage devices to utilize the wastewater. When the temperature sensor inside the inner shell 11 senses that the operating temperature of the transformer 112 is higher than the threshold, the water storage mechanism 2 starts to drain water. At the same time, the water wheel driving mechanism 4 utilizes the impact of the water flow to convert the potential energy of the water flow into mechanical energy and drive the air cooling mechanism 3. The air cooling mechanism 3 controls the airflow to impact the transformer 112 inside the inner shell 11, and uses the airflow to take away the excess heat inside the inner shell 11. After passing through the water wheel driving mechanism 4, the water flows to the outer surface of the inner shell 11, and then the inner shell 11 is cooled by the water flow. The inner shell 11 is made of an aluminum alloy with good thermal conductivity. The inner shell 11 with a reduced temperature will also absorb a large amount of heat generated by the operation of the transformer 112, thereby performing efficient cooling.

[0031] Reference Figure 4 : The water storage mechanism 2 includes a water reservoir 21 and a support rod 22; the bottom of the water reservoir 21 is connected to the base plate 1 through the support rod 22; the bottom of the water reservoir 21 is connected to the inner shell 11.

[0032] The present invention realizes the function of accumulating rainwater through the water reservoir 21 and the support rod 22. The water reservoir 21 is preferably made of aluminum alloy with good thermal conductivity; the water reservoir 21 is supported by the support rod 22, and the bottom of the water reservoir 21 is in contact with the internal space of the inner shell 11. In the daily use of the power distribution cabinet, when rainwater is accumulated in the water reservoir 21, since the water temperature is usually lower than the room temperature, the rainwater can be used to cool down to a certain extent. Through the heat conduction effect of the bottom of the water reservoir 21, the bottom wall of the water reservoir 21 can absorb a large amount of the temperature inside the inner shell 11, and through the heat conduction effect of the inner shell 11, the heat generated by the transformer 112 can be discharged between the outer shell 12 and the inner shell 11, and discharged to the outside air with the airflow, and through the insulation of the outer shell 12, in sunny weather, the irradiation of sunlight can only increase the temperature of the outer shell 12, thereby avoiding the situation where the temperature of the transformer 112 increases due to direct sunlight.

[0033] Reference Figure 3 and Figure 6 : A water tank 23 is installed in the outer shell 12, and a water guide edge 231 is provided on the side of the water tank 23 close to the inner shell 11; a control component 24 for controlling drainage is provided in the water tank 21; in the working state, when the temperature sensor senses that the temperature inside the inner shell 11 is higher than the threshold, the control component 24 controls the accumulated water in the water tank 21 to flow into the water tank 23 through the water wheel driving mechanism 4, and when the water level of the accumulated water in the water tank 23 rises to the water guide edge 231, the accumulated water is guided by the water guide edge 231 to form a water curtain and flow to the outer surface of the inner shell 11.

[0034] The present invention realizes the function of cooling the inner shell 11 by water flow through the water storage tank 23 , the water guide edge 231 and the control component 24 , thereby achieving the effect of uniformly cooling the inner shell 11 . When the temperature sensor inside the inner shell 11 senses that the operating temperature of the transformer 112 is higher than the threshold, the control component 24 controls the water reservoir 21 to start draining, and the water first flows to the water wheel drive mechanism 4, and the potential energy of the water is converted into mechanical energy through the water wheel drive mechanism 4 and drives the air cooling mechanism 3. The air cooling mechanism 3 controls the airflow to impact the transformer 112 inside the inner shell 11, and uses the airflow to take away the excess heat inside the inner shell 11. After passing through the water wheel drive mechanism 4, the water flows into the water storage tank 23. With the accumulation of water in the water storage tank 23, the water level in the water storage tank 23 is higher than the water guide edge 231, and then follows the guidance of the water guide edge 231 to form a water curtain, which flows relatively evenly to the outer surface of the inner shell 11, and then the inner shell 11 is cooled by the water flow. The inner shell 11 is made of aluminum alloy with good thermal conductivity. The inner shell 11 with reduced temperature will also absorb a large amount of heat generated by the operation of the transformer 112, and perform efficient cooling.

[0035] Reference Figure 3 , Figure 4 , Figure 6 and Figure 7 : The control component 24 includes a connecting pipe 241, a solenoid valve 242 and a guide pipe 243; the connecting pipe 241 is arranged in the water reservoir 21, and the connecting pipe 241 is connected to the water wheel driving mechanism 4 through the guide pipe 243; the guide pipe 243 is a conical pipe with an expanded upper end; the solenoid valve 242 is installed on the connecting pipe 241.

[0036] The present invention realizes the function of controlling water flow through the connecting pipe 241, the solenoid valve 242 and the guide pipe 243. The solenoid valve 242 is electrically connected to the controller; when the temperature sensor inside the inner shell 11 senses that the operating temperature of the transformer 112 is higher than the threshold, the controller sends a signal to the solenoid valve 242, and the solenoid valve 242 connects to the connecting pipe 241 after receiving the signal, and the water in the water reservoir 21 flows to the guide pipe 243 through the connecting pipe 241. The local impact force of the water flow is increased by the shrinkage of the guide pipe 243, and then the potential energy of the water flow is converted into mechanical energy through the water wheel driving mechanism 4 and drives the air cooling mechanism 3. The air cooling mechanism 3 controls the air flow to impact the transformer 112 inside the inner shell 11, and uses the air flow to take away the excess heat inside the inner shell 11. The water storage mechanism 2, the air cooling mechanism 3 and the water wheel driving mechanism 4 are provided in multiple groups, and are evenly spaced along the width direction of the power distribution cabinet to further improve the cooling efficiency.

[0037] Reference Figure 3 , Figure 8 and Fig. 9 : The air cooling mechanism 3 includes a bracket 31 and a fan 32; the bracket 31 is connected to the inner wall of the inner shell 11; the fan 32 is rotatably mounted on the bracket 31; the water wheel driving mechanism 4 includes a mounting box 41, a first rotating shaft 42, a micro water wheel 43 and a transmission assembly 44; the mounting box 41 is connected to the outer shell 12, and the mounting box 41 is communicated with the water storage mechanism 2; the first rotating shaft 42 is rotatably mounted on the mounting box 41; the micro water wheel 43 is sleeved on the first rotating shaft 42; the first rotating shaft 42 is transmission-connected to the fan 32 through the transmission assembly 44.

[0038] The present invention realizes the function of controlling airflow by water flow impact to reduce temperature through the support 31 , the fan 32 , the installation box 41 , the first rotating shaft 42 , the micro water wheel 43 and the transmission assembly 44 . The first rotating shaft 42 is rotatably connected to the water storage tank 23 through a bearing, and a support ring 232 and a reinforcing rib 233 for supporting the first rotating shaft 42 are installed in the water storage tank 23; the installation box 41 is connected to the water storage tank 23 through a long strip gap; when the temperature sensor inside the inner shell 11 senses that the operating temperature of the transformer 112 is higher than the threshold, the solenoid valve 242 opens, and the accumulated water in the water storage tank 21 flows into the installation box 41 through the connecting pipe 241 and the guide pipe 243, and impacts the micro water wheel 43, driving the micro water wheel 43 to rotate, and the micro water wheel 43 drives the first rotating shaft 42 to rotate, and the first rotating shaft 42 drives the fan 32 to rotate through the transmission assembly 44, generating airflow to impact the transformer 112 inside the inner shell 11, and using the airflow to take away the excess heat inside the inner shell 11. After passing through the micro water wheel 43, the accumulated water flows into the water storage tank 23 through the long strip gap on the water storage tank 23, and then flows to the outer surface of the inner shell 11 under the guidance of the water guide 231.

[0039] Reference Figure 3 , Figure 8 and Fig. 9 : The transmission assembly 44 includes a second rotating shaft 441, a pulley 442, a transmission belt 443 and a bevel gear 444; the second rotating shaft 441 is rotatably mounted on the inner shell 11; there are two pulleys 442, and the two pulleys 442 are respectively sleeved on the first rotating shaft 42 and the second rotating shaft 441; the transmission belt 443 connects the two pulleys 442; there are two bevel gears 444, one of which is coaxially connected to the fan 32, and the other bevel gear 444 is sleeved on the second rotating shaft 441, and the two bevel gears 444 are meshed and connected.

[0040] The present invention realizes the function of driving the fan 32 to rotate when the first rotating shaft 42 rotates through the second rotating shaft 441 , the pulley 442 , the transmission belt 443 and the bevel gear 444 . When the temperature sensor inside the inner shell 11 senses that the operating temperature of the transformer 112 is higher than the threshold, the solenoid valve 242 opens, and the accumulated water in the water reservoir 21 flows into the installation box 41 through the connecting pipe 241 and the guide pipe 243, and impacts the micro water wheel 43, driving the micro water wheel 43 to rotate, and the micro water wheel 43 drives the first rotating shaft 42 to rotate, and the first rotating shaft 42 drives the second rotating shaft 441 to rotate through the pulley 442 and the transmission belt 443, and the second rotating shaft 441 drives the fan 32 to rotate through the transmission of two bevel gears 444, generating airflow to impact the transformer 112 inside the inner shell 11, and using the airflow to take away the excess heat inside the inner shell 11, and the accumulated water flows into the water storage tank 23 through the long strip notch on the water storage tank 23 after passing through the micro water wheel 43, and then flows to the outer surface of the inner shell 11 under the guidance of the water guide 231.

[0041] Reference Figure 4 and Figure 5 : An overflow pipe 244 is also installed in the water reservoir 21, and the overflow pipe 244 is connected to the connecting pipe 241 and the guide pipe 243; when the water level in the water reservoir 21 is higher than the overflow pipe 244, it flows into the guide pipe 243 through the top of the overflow pipe 244.

[0042] The present invention realizes the function of automatically cooling down when there is sufficient accumulated water through the overflow pipe 244. When the accumulated water in the water reservoir 21 is sufficient, there is still rainwater or other water resources to supplement it. Even if the temperature in the inner shell 11 is not higher than the threshold, the accumulated water in the water reservoir 21 flows into the guide pipe 243 through the top of the overflow pipe 244, and flows into the installation box 41 through the guide pipe 243 and impacts the micro water wheel 43 to rotate, thereby controlling the fan 32 to rotate, driving the micro water wheel 43 to rotate, and the micro water wheel 43 drives the first rotating shaft 42 to rotate, and the first rotating shaft 42 drives the second rotating shaft 441 to rotate through the pulley 442 and the transmission belt 443, and the second rotating shaft 441 drives the second rotating shaft 442 to rotate. The fan 32 is driven to rotate by the transmission of two bevel gears 444, generating airflow to impact the transformer 112 inside the inner shell 11, and the excess heat inside the inner shell 11 is taken away by the airflow. After passing through the micro-water wheel 43, the accumulated water flows into the water storage tank 23 through the long strip gap on the water storage tank 23, and then flows to the outer surface of the inner shell 11 through the guidance of the water guide 231. While not affecting the subsequent active cooling of the water storage tank 21, the inner shell 11 is additionally cooled; thereby further improving the cooling efficiency without consuming additional energy.

[0043] Reference Figure 4 and Figure 5 : A filter grid 2441 for intercepting impurities is installed at the top of the overflow pipe 244.

[0044] The present invention realizes the function of intercepting impurities through the filter grille 2441, so as to prevent the impurities in the water reservoir 21 from entering the installation box 41 and affecting the rotation of the micro water wheel 43. When the power distribution cabinet is installed outdoors, the water reservoir 21 replenishes water resources by accumulating rainwater. At the same time, some other objects will enter the water reservoir 21 with wind or rainwater. Once the impurities enter the installation box 41, they may be entangled in the rotating micro water wheel 43, affecting the rotation of the micro water wheel 43. For this reason, a filter grille 2441 is set at the top of the overflow pipe, and large particles of impurities are intercepted by the filter grille 2441, while the impurities with smaller particles have limited impact on the micro water wheel 43 and can be discharged with the impact of the water flow.

[0045] Reference Figure 1 and Fig.10 : The bottom of the inner shell 11 and the outer shell 12 are both provided with an air intake grille 13; the top of the inner shell 11 is provided with an exhaust cabin 14 connected to the interior of the inner shell 11; the exhaust cabin 14 is provided with an exhaust channel for exhausting air.

[0046] The present invention realizes the function of taking in air from the bottom and exhausting air from the top through the air intake grille 13 and the exhaust cabin 14, and improves the heat dissipation efficiency by using the property of hot air floating up. The exhaust cabin 14 is located in the water reservoir 21. The air intake grille 13 of the inner shell 11 is provided with a polymer breathable membrane for intercepting water vapor. The breathable membrane is a prior art and is not shown in the figure. The position of the exhaust channel on the exhaust cabin 14 is much higher than the overflow pipe 244 and the outer edge of the water reservoir 21, so as to prevent the accumulated water in the water reservoir 21 from entering the exhaust cabin 14 through the exhaust channel. Since heat usually accumulates upward, an air intake grille 13 is provided at the bottom of the inner shell 11 and the outer shell 12, and an exhaust cabin 14 is provided at the top of the inner shell 11. In daily use, heat is accumulated at the top and bottom of the inner shell 11 along with the air. When rainwater accumulates in the exhaust chamber 14 and the water reservoir 21, the rainwater can naturally cool down by contacting the outer wall of the exhaust chamber 14. When the temperature sensor senses that the temperature is higher than the threshold, the accumulated water drives the fan 32 to rotate through the water wheel drive mechanism 4. At the same time, the accumulated water flows through the outer surface of the inner shell 11. At this time, the airflow enters from the air intake grille 13, passes through the inside of the inner shell 11 and is discharged from the exhaust chamber 14. At the same time, the accumulated water is discharged from the outer shell 12 through the exhaust grille. The accumulated water will contact the airflow, further cool the incoming airflow, and intercept water vapor through the breathable membrane to prevent water vapor from corroding the transformer 112. The airflow direction is as follows: Fig.10 Indicated by the arrow.

[0047] Reference Figure 1 and Fig.10 The exhaust chamber 14 is provided with a protective plate 141 for preventing rainwater from entering the exhaust chamber 14 from the exhaust passage, and a gap is provided between the protective plate 141 and the outer surface of the exhaust chamber 14 for air flow to pass through.

[0048] The present invention achieves the function of preventing rainwater from entering the exhaust cabin 14 by setting the protective plate 141. When the power distribution cabinet is set outdoors, in order to prevent other objects and rainwater from entering the exhaust cabin 14 from the exhaust channel and causing damage to the transformer 112, a protective plate 141 is set on the outer surface of the exhaust cabin 14, and the hot air flow is discharged from the gap between the protective plate 141 and the outer edge of the exhaust cabin 14. The narrow gap can prevent other objects from entering the exhaust cabin 14 under the action of the wind, achieving the effect of preliminary filtering. While ensuring exhaust, it further protects the transformer 112 and other components in the inner shell 11, thereby reducing personnel maintenance and reducing costs.

[0049] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A high-efficiency and energy-saving high and low voltage distribution cabinet, comprising a base plate (1), an inner shell (11) is mounted on the base plate (1), and a temperature sensor is arranged in the inner shell (11); It is characterized in that The bottom plate (1) is also provided with a water storage mechanism (2), an air cooling mechanism (3) and a water wheel driving mechanism (4); An outer shell (12) surrounding the inner shell (11) is mounted on the bottom plate (1), and a gap is provided between the inner shell (11) and the outer shell (12); The water storage mechanism (2) is located above the inner shell (11); The air cooling mechanism (3) is arranged on the inner shell (11) and is used to control the flow of air; The water wheel driving mechanism (4) is arranged on the outer shell (12) and is used to drive the air cooling mechanism (3); In the working state, after the water storage mechanism (2) accumulates rainwater, when the temperature sensor senses that the temperature is higher than the threshold value, the water storage mechanism (2) starts to drain water, and the water wheel driving mechanism (4) converts the potential energy of the water flow into mechanical energy for driving the air cooling mechanism (3), driving the air cooling mechanism (3) to generate airflow. At the same time, the water flow discharged by the water storage mechanism (2) passes through the outer surface of the inner shell (11), taking away the heat inside the inner shell (11); The water storage mechanism (2) comprises a water reservoir (21) and a support rod (22); the bottom of the water reservoir (21) is connected to the bottom plate (1) via the support rod (22); The bottom of the water reservoir (21) is connected to the inner shell (11); The water wheel driving mechanism (4) comprises a mounting box (41), a first rotating shaft (42), a micro water wheel (43) and a transmission assembly (44); the mounting box (41) is connected to the outer shell (12), and the mounting box (41) is communicated with the water storage mechanism (2); the first rotating shaft (42) is rotatably mounted on the mounting box (41); the micro water wheel (43) is sleeved on the first rotating shaft (42); the first rotating shaft (42) is connected to the air cooling mechanism (3) through the transmission assembly (44).

2. The high-efficiency and energy-saving high and low voltage distribution cabinet according to claim 1 is characterized in that: A water storage tank (23) is installed in the outer shell (12), and a water guide edge (231) is provided on one side of the water storage tank (23) close to the inner shell (11); A control component (24) for controlling drainage is provided in the water reservoir (21); In the working state, when the temperature sensor senses that the temperature inside the inner shell (11) is higher than the threshold value, the control component (24) controls the accumulated water in the water reservoir (21) to flow into the water storage tank (23) through the water wheel driving mechanism (4); when the water level of the accumulated water in the water storage tank (23) rises to the water guide edge (231), the accumulated water is guided by the water guide edge (231) to form a water curtain and flow toward the outer surface of the inner shell (11).

3. The high-efficiency and energy-saving high and low voltage distribution cabinet according to claim 1 is characterized in that: The air cooling mechanism (3) comprises a bracket (31) and a fan (32).

4. The high-efficiency and energy-saving high and low voltage distribution cabinet according to claim 2 is characterized in that: An overflow pipe (244) is also installed in the water reservoir (21), and the overflow pipe (244) is connected to the connecting pipe (241) and the guide pipe (243); When the water level of the accumulated water in the water reservoir (21) is higher than the overflow pipe (244), the water flows into the guide pipe (243) through the top end of the overflow pipe (244).

5. The high-efficiency and energy-saving high and low voltage distribution cabinet according to claim 4 is characterized in that: A filter grid (2441) for intercepting impurities is installed at the top end of the overflow pipe (244).

6. The high-efficiency and energy-saving high and low voltage distribution cabinet according to claim 1 is characterized in that: The bottoms of the inner shell (11) and the outer shell (12) are both provided with air intake grilles (13); An exhaust chamber (14) communicating with the interior of the inner shell (11) is installed at the top end of the inner shell (11); The exhaust chamber (14) is provided with an exhaust passage for exhausting air.

7. The high-efficiency and energy-saving high and low voltage distribution cabinet according to claim 6 is characterized in that: The exhaust chamber (14) is provided with a protective plate (141) for preventing rainwater from entering the exhaust chamber (14) from the exhaust passage, and a gap for airflow to pass through is provided between the protective plate (141) and the outer surface of the exhaust chamber (14).

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