A power distribution cabinet

Abstract

The present invention relates to the technical field of power distribution cabinets, and specifically to a power distribution cabinet, comprising: a cabinet, a heat dissipation port opened on the cabinet, a rain shield rotatably mounted on the cabinet, a cooling mechanism for cooling components in the cabinet when it is windy, a protective mechanism for driving the rain shield to block the heat dissipation port when it is raining and windy, and a detection mechanism for detecting whether the rain shield blocks the heat dissipation port when it is windy and rainy. The power distribution cabinet of the present invention can shield the heat dissipation port in rainy and windy weather by setting a protective mechanism, prevent rainwater from entering the power distribution cabinet from the heat dissipation port and damaging the components, and cool the components in the power distribution cabinet when it is sunny and windy, without the need for an additional power source, thereby reducing energy loss.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution cabinets, and in particular to a power distribution cabinet. Background Art

[0002] The distribution cabinet (box) is the final equipment of the distribution system, which is mainly divided into power distribution cabinet (box), lighting distribution cabinet (box) and metering cabinet (box); they are the general term for motor control center, which is used to distribute the electric energy of a circuit of the upper-level distribution equipment to the nearest load, and provide protection, monitoring and control for these loads.

[0003] Since a large number of electrical components integrated inside the distribution cabinet will generate significant heat during operation; if this heat cannot be discharged in time, the temperature inside the distribution cabinet will rise, which will in turn affect the performance, stability and service life of the electrical components; high temperature environment may also accelerate equipment aging, increase the risk of failure, and even cause safety accidents.

[0004] Patent application number CN202310851496.2 discloses a power distribution cabinet with active heat dissipation function, which relates to the technical field of power equipment, including a base, a power distribution cabinet, a heat dissipation fan and a heat dissipation trough. The power distribution cabinet is vertically fixed on the top of the base, and the heat dissipation fan is rotatably installed on the side end of the power distribution cabinet. A waterproof outer cylinder is vertically arranged inside the base, and a longitudinal transmission component and a transverse transmission component are arranged inside the power distribution cabinet. A cooling component is arranged on the outside of the power distribution cabinet. The present invention controls the heat dissipation trough by setting a shield controlled by the buoyancy of the water level. On rainy days, the shield will shield the heat dissipation trough to prevent rainwater from entering the equipment through the heat dissipation trough. At the same time, a linkage mechanism controlled by the buoyancy of the water level is set. When it rains heavily, the curved extrusion block moves up and squeezes, thereby causing the gear to mesh with the rack, and the waterproof outer cylinder is raised by rotation to protect the bottom of the power distribution cabinet.

[0005] This patent prevents rain from entering the device through the heat sink by covering the heat sink with a shield when it rains. However, when it rains, it is often accompanied by windy and windless weather. If there is no wind, the rain will fall at a relatively vertical angle and then be blocked by the shield at the upper end of the heat sink, making it difficult to enter the device. Therefore, if it is raining and there is no wind, the shield is completely stuck on the heat sink, which will only accelerate the accumulation of heat inside the distribution cabinet, thereby affecting the heat dissipation effect.

[0006] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Summary of the invention

[0007] The purpose of the present invention is to provide a power distribution cabinet which can effectively solve the above-mentioned technical problems.

[0008] In order to achieve the purpose of the present invention, the following technical scheme is adopted:

[0009] A power distribution cabinet, comprising: a cabinet, a heat dissipation port opened on the cabinet, a rain shield rotatably mounted on the cabinet, a cooling mechanism for cooling components in the cabinet when it is windy, a protective mechanism for driving the rain shield to block the heat dissipation port when it is raining and windy, and a detection mechanism for detecting whether the rain shield blocks the heat dissipation port when it is windy and rainy;

[0010] The cooling mechanism comprises: a rotating fan blade rotatably mounted on the top of the cabinet, a heat dissipation fan rotatably mounted in the cabinet, and a driving component for driving the heat dissipation fan to rotate by the rotating fan blade;

[0011] The protection mechanism comprises: a water storage tank fixedly mounted on the top of the cabinet, a pressure plate slidably mounted in the water storage tank, the pressure plate being elastically connected to the water storage tank, and a rotating assembly driving the rain shield to rotate;

[0012] The rotating assembly comprises: an extrusion member fixedly connected to the pressure plate, a pressure-bearing member slidably mounted in the cabinet, a gear 1 rotatably mounted on the pressure-bearing member, a half gear fixedly mounted on the rain shield, a gear 2 rotatably mounted in the cabinet, and a transmission unit that drives the gear 2 to rotate synchronously with the rotating fan blade when the extrusion member moves downward to extrude the pressure-bearing member, and drives a reset member that resets the pressure-bearing member; the gear 2 meshes with the half gear, and the gear 2 is connected to the gear 1 through a transmission member;

[0013] When it rains and blows, the rotating fan blades rotate with the wind, and the water storage tank collects rainwater to press the pressure plate down, so that the rotating fan blades drive the cooling fan to rotate, and at the same time drive the half gear on the rain shield to rotate circumferentially, so that the rain shield is clamped on the heat dissipation port to prevent rainwater from entering the cabinet.

[0014] Furthermore, the driving assembly is composed of an active bevel gear and a driven bevel gear; the active bevel gear is fixedly connected to the rotating fan blade, the driven bevel gear is fixedly connected to the cooling fan, and the active bevel gear is meshed with the driven bevel gear.

[0015] Furthermore, the transmission unit is composed of a turbine, a worm, and gear three; the worm is coaxially fixedly connected to the rotating fan blade, and the turbine is rotatably installed on the cabinet; the turbine is meshed with the worm, and gear three is coaxially fixedly connected to the turbine.

[0016] Furthermore, the pressure plate is also provided with a water leakage port, a cold discharge pipe is fixedly installed in the cabinet, and the cold discharge pipe is connected to the water leakage port.

[0017] Furthermore, a return spring is provided on the rain shield, and two ends of the return spring are fixedly connected to the rain shield and the cabinet body respectively.

[0018] Furthermore, the detection mechanism is composed of wind wheel one, wind wheel two, two light-emitting diodes, a photosensor, a light shield, and a power generation component that powers the light-emitting diodes as wind wheel one and wind wheel two rotate; the light shield is fixedly installed on the rain shield, wind wheel one and wind wheel two are fixedly installed on the top of the cabinet, and the light-emitting diodes and photosensor are electrically connected in the cabinet respectively.

[0019] Furthermore, the power generation assembly includes: a heat dissipation pipe fixedly installed in the cabinet, a piston slidably installed in the heat dissipation pipe, and a moving assembly that drives the piston to move in the heat dissipation pipe when the wind wheel 1 and the wind wheel 2 are driven by wind, a coil is provided in the inner cavity of the heat dissipation pipe, a magnet is provided on the piston, and the coil is electrically connected to the light-emitting diode;

[0020] As the piston moves back and forth in the heat dissipation tube, the magnet approaches and moves away from the coil, an electromotive force and a current are generated in the coil, and the diode is energized.

[0021] Furthermore, the moving component includes: cam 1 and cam 2 respectively fixedly connected to wind wheel 1 and wind wheel 2, and capsule 1 and capsule 2 fixedly installed at both ends of the heat dissipation pipe.

[0022] Furthermore, the heat dissipation pipe is provided with a first air outlet and a second air outlet, and the piston is a double-headed piston.

[0023] Compared with the prior art, the present invention has the following beneficial effects: a power distribution cabinet of the present invention can shield the heat dissipation vents in rainy and windy weather by arranging a protective mechanism, thereby preventing rainwater from entering the power distribution cabinet through the heat dissipation vents and damaging the components; at the same time, the components in the power distribution cabinet can be cooled down in sunny and windy weather without the need for an additional power source, thereby reducing energy loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0025] Figure 1 This is a structural schematic diagram of a power distribution cabinet of the present invention;

[0026] Figure 2 This is a schematic diagram of the internal structure of a power distribution cabinet of the present invention;

[0027] Figure 3 It is a structural schematic diagram of the cooling mechanism in the present invention;

[0028] Figure 4 It is an internal cross-sectional view of the cooling mechanism in the present invention;

[0029] Figure 5 for Figure 4A partial enlarged view of part A;

[0030] Figure 6 It is a structural schematic diagram of the protection mechanism in the present invention;

[0031] Figure 7 for Figure 6 A partial enlarged view of part B;

[0032] Figure 8 for Figure 6 A partial enlarged view of part C in the middle;

[0033] Fig. 9 It is a schematic diagram of the structure of the rotating assembly in the present invention;

[0034] Fig.10 It is a structural schematic diagram of the detection mechanism in the present invention;

[0035] Fig.11 is a cross-sectional view of the detection mechanism in the present invention;

[0036] Fig.12 It is a partial cross-sectional view of the detection mechanism in the present invention;

[0037] Fig.13 It is a schematic diagram of the structure when the rain shield in the present invention is not closed;

[0038] Fig.14 It is a schematic structural diagram of the rain shield of the present invention when it is closed.

[0039] In the figure: 1, cabinet; 2, heat dissipation port; 3, rain shield; 4, cooling mechanism; 5, protection mechanism; 6, detection mechanism; 41, rotating fan blade; 42, cooling fan; 43, driving assembly; 51, water storage tank; 52, pressure plate; 531, extrusion member; 532, pressure member; 533, gear 1; 534, half gear; 535, gear 2; 537, reset member; 538, transmission member; 431, driving bevel gear; 432, driven bevel gear; 53 61. turbine; 5362. worm; 5363. gear three; 521. water leak; 522. radiator; 31. return spring; 61. wind wheel one; 62. wind wheel two; 63. light emitting diode; 64. light sensor; 65. light baffle; 671. heat pipe; 672. piston; 6731. cam one; 6732. cam two; 6733. capsule one; 6734. capsule two; 6711. air outlet one; 6712. air outlet two. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are partial embodiments of the present invention, rather than all embodiments.

[0041] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention. When a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a centered component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centered component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a centered component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0042] like Figures 1 to 14 As shown, a power distribution cabinet of the present invention comprises: a cabinet body 1, a heat dissipation port 2 opened on the cabinet body 1, a rain shield 3 rotatably mounted on the cabinet body 1, a cooling mechanism 4 for cooling components in the cabinet body 1 when it is windy, a protection mechanism 5 for driving the rain shield 3 to block the heat dissipation port 2 when it is raining and windy, and a detection mechanism 6 for detecting whether the rain shield 3 blocks the heat dissipation port 2 when it is windy and rainy;

[0043] The cooling mechanism 4 includes: a rotating fan blade 41 rotatably mounted on the top of the cabinet 1, a cooling fan 42 rotatably mounted in the cabinet 1, and a driving assembly 43 for driving the cooling fan 42 to rotate by the rotating fan blade 41; the driving assembly 43 is composed of a driving bevel gear 431 and a driven bevel gear 432; the driving bevel gear 431 is fixedly connected to the rotating fan blade 41, the driven bevel gear 432 is fixedly connected to the cooling fan 42, and the driving bevel gear 431 is meshed with the driven bevel gear 432;

[0044] In windy weather, the wind drives the rotating blades 41 on the top of the cabinet 1 to rotate, and the active bevel gear 431 rotates along with the rotating blades 41 , and drives the cooling fan 42 to rotate inside the distribution cabinet through the driven bevel gear 432 to dissipate heat for the components inside the distribution cabinet.

[0045] It should be added here that, since the direction of wind blowing is often disordered and changeable, the wind blows toward the rotating fan blades 41 from different angles, driving the rotating fan blades 41 to rotate in different directions. Since the rotating fan blades are synchronously connected to the cooling fan 42 through a gear set, when the rotating fan blades 41 are pushed by wind from different directions, the rotation direction of the cooling fan 42 is changed, causing the direction of the wind blown out by the cooling fan 42 in the cabinet 1 to always remain the same as the direction of the wind flowing outside the cabinet 1; when the blowing direction of the cooling fan 42 is consistent with the outside wind direction, a natural wind duct is formed, so that the natural wind from the outside can assist the cooling fan 42 to discharge the hot air in the distribution box faster, thereby enhancing the heat dissipation effect; at the same time, when the wind direction is consistent, the outside wind can reduce the thermal resistance between the outer casing of the distribution box and the external environment, making it easier for heat to be transferred from the inside of the distribution box to the external environment, further improving the heat dissipation efficiency.

[0046] The protection mechanism 5 comprises: a water storage tank 51 fixedly mounted on the top of the cabinet 1, a pressure plate 52 slidably mounted in the water storage tank 51, the pressure plate 52 is elastically connected to the water storage tank 51, and a rotating assembly driving the rain shield 3 to rotate;

[0047] The rotating assembly includes: an extrusion member 531 fixedly connected to the pressure plate 52, a pressure member 532 slidably mounted in the cabinet 1, a gear 1 533 rotatably mounted on the pressure member 532, a half gear 534 fixedly mounted on the rain shield 3, a gear 2 535 rotatably mounted in the cabinet 1, and a transmission unit that drives the gear 2 535 to rotate synchronously with the rotating fan blade 41 when the extrusion member 531 moves downward to squeeze the pressure member 532, and drives the reset member 537 to reset the pressure member 532; The gear 2 535 is meshed with the half gear 534, and the gear 2 535 is connected with the gear 1 533 through a transmission member 538; the transmission unit is composed of a turbine 5361, a worm 5362, and a gear 3 5363; the worm 5362 is coaxially fixedly connected with the rotating fan blade 41, and the turbine 5361 is rotatably mounted on the cabinet 1; the turbine 5361 is meshed with the worm 5362, and the gear 3 5363 is coaxially fixedly connected with the turbine 5361. When it rains and blows, the rotating fan blade 41 rotates with the wind, and the water storage tank 51 collects rainwater and presses the pressing plate 52 downward, so that the rotating fan blade 41 drives the cooling fan 42 to rotate, and at the same time, drives the half gear 534 on the rain shield 3 to rotate circumferentially, so that the rain shield 3 is clamped on the heat dissipation port 2 to prevent rainwater from entering the cabinet 1.

[0048] When it is windy and rainy, the rotating fan blades 41 still drive the fan to rotate to cool the components in the cabinet 1. At the same time, rainwater keeps dripping into the water storage tank 51 and keeps gathering in the water storage tank 51. The pressure plate 52 is subjected to the weight and moves downward along the water storage tank 51, and simultaneously drives the extrusion piece 531 to move downward, so that the extrusion piece 531 squeezes the pressure-receiving piece 532. The pressure-receiving piece 532 is squeezed and slides along the cabinet 1, and the gear 1 533 is gradually approached to the gear 3 5363, until the gear 1 533 is meshed with the gear 3 5363. At this time, the rotating fan blades 41 drive the worm 5362 to rotate, and the worm 5362 synchronously drives the turbine 5361 to rotate. When the turbine 5361 rotates, the gear 3 5363 rotates synchronously. Therefore, when the pressure plate 52 drives the extrusion piece 531 to move downward, the pressure-receiving piece 532 drives the gear 1 533 to approach the gear 3 5363 to mesh with it, and the gear 3 5363 drives the gear 1 533 to rotate;

[0049] When the gear 1 533 rotates, the gear 2 535 is synchronously driven to rotate by the rotating member, and the transmission member 538 is preferably a belt; and the cabinet 1 is also provided with a tensioning wheel used in conjunction with the transmission member 538, so that when the distance between the gear 2 535 and the gear 1 533 changes, the tensioning wheel can still ensure the stability and reliability of the transmission force;

[0050] When the second gear 535 rotates, it will synchronously drive the half gear 534 to rotate. At this time, the second gear 535 drives the rain shield 3 to rotate synchronously, thereby realizing the engagement of the rain shield 3 in the heat dissipation groove to prevent rain from entering the cabinet 1 through the heat dissipation port 2 when it rains and blows, causing damage to components. Since the half gear 534 is divided into a toothed section and a toothless section, when the second gear 535 drives the half gear 534 to rotate from the toothed section to the toothless section, the rain shield 3 is just rotated to the heat dissipation port 2 for engagement. At this time, the second gear 535 rotates again, and the toothless section of the half gear 534 has no teeth meshing with the second gear 535, so it cannot drive the gear half gear 534 to rotate;

[0051] The rain shield 3 is also provided with a return spring 31 , and two ends of the return spring 31 are fixedly connected to the rain shield 3 and the cabinet 1 , respectively.

[0052] When the rain stops, the water in the water tank 51 flows out, and the pressure plate 52 moves upward. The extrusion member 531 releases the extrusion on the pressure-bearing member 532, and the pressure-bearing member 532 is pulled back and reset by the reset member 537, and the reset member 537 is preferably a spring; at this time, gear one 533 is separated from gear three 5363, gear one 533 is released from the meshing with gear three 5363, gear one 533 no longer rotates, and gear two 535 no longer rotates. At this time, the rain shield 3 is reset by the reset spring 31, and the heat dissipation port 2 is automatically opened when it is not raining, and the heat dissipation effect is better.

[0053] The pressure plate 52 is also provided with a water leakage port 521, and a cold discharge pipe 522 is fixedly installed in the cabinet 1, and the cold discharge pipe 522 is connected to the water leakage port 521;

[0054] When it rains, the water in the water tank 51 will flow into the radiator pipe 522 through the leaking hole 521 on the pressure plate 52. Since the radiator pipe 522 surrounds the inner wall of the cabinet 1, when the cold rainwater flows into the radiator pipe 522, the rainwater will flow along the radiator pipe 522 around the cabinet 1 and finally be discharged out of the cabinet 1, thereby further bringing out the heat in the cabinet 1 and achieving the effect of water cooling. At the same time, when it is windy and rainy, the rain shield 3 will cover the heat dissipation port 2, and the heat in the cabinet 1 will increase sharply. The closed cabinet 1 is cooled by water through the radiator pipe 522, so there is no need to add an additional cooling mechanism 4, which greatly reduces energy loss.

[0055] It should be noted here that the water leakage hole 521 on the pressure plate 52 is relatively small, about 1-2 cm. Therefore, when it rains heavily, the water leakage hole 521 does not have time to leak out a large amount of rainwater, and the rainwater will still gather in the water storage tank 51, pressing down the pressure plate 52; when it rains lightly, it is difficult for rainwater to gather in the water storage tank 51, but the rain shield 3 is vertically installed just above the heat dissipation port 2, and a grille is installed at the heat dissipation port 2 to prevent rainwater. Therefore, it is difficult to enter the interior of the cabinet 1 when it rains lightly, so that the pressure plate 52 is not pressed down to clamp the rain shield 3 at the heat dissipation port 2, so that it does not affect the rain protection effect, and when rainwater does not enter the interior of the cabinet from the heat dissipation port, clamping the rain shield with the heat dissipation port 2 will only increase the heat generation in the cabinet 1.

[0056] Since the power distribution cabinet is often used outdoors, it is often damaged by both natural and man-made factors, which greatly affects the service life of each mechanism of the power distribution cabinet and sudden abnormal situations. When it is windy and rainy, the rain shield 3 is blocked by foreign objects or the parts are old and broken and cannot be engaged with the heat dissipation port 2, the staff cannot be reminded to perform maintenance in time, which may cause damage to the components in the power distribution cabinet.

[0057] The detection mechanism 6 is composed of a wind wheel 1 61, a wind wheel 2 62, a light emitting diode, a light sensor 64, a light shield 65, and a power generation component for powering the light emitting diode 63; the light shield 65 is fixedly installed on the rain shield 3, the wind wheel 1 61 and the wind wheel 2 62 are fixedly installed on the top of the cabinet 1, and the light emitting diode 63 and the light sensor 64 are respectively electrically connected to the cabinet 1; the power generation component includes: a heat dissipation pipe 671 fixedly installed in the cabinet 1, a heat dissipation pipe 671 slidably installed on the cabinet 1, and a heat dissipation pipe 671 fixedly installed in the cabinet 1. The piston 672 in the heat dissipation pipe 671 is a moving component that drives the piston 672 to move in the heat dissipation pipe 671 when the wind wheel 1 61 and the wind wheel 2 62 are driven by wind. The cam 1 6731 and the cam 2 6732 are respectively fixedly connected to the wind wheel 1 61 and the wind wheel 2 62, and the bladder 1 6733 and the bladder 2 6734 are fixedly installed at both ends of the heat dissipation pipe 671; the heat dissipation pipe 671 is provided with an air outlet 1 6711 and an air outlet 2 6712, and the piston 672 is a double-headed piston.

[0058] When it rains and is windy, the wind wheel 1 61 and the wind wheel 2 62 rotate successively with the wind, and the wind wheel 1 61 and the wind wheel 2 62 respectively drive the cam 1 6731 and the cam 2 6732 to rotate, causing the bladder 1 6733 and the bladder 2 6734 to be squeezed alternately, and the bladder 1 6733 and the bladder 2 6734 are squeezed and blown alternately from both ends into the heat dissipation tube 671. When the bladder 1 6733 blows air into the heat dissipation tube 671, the piston 672 moves along the heat dissipation tube 671 toward the bladder 2 6734 until the piston 672 passes through the air outlet 1 6711. At this time, the air pressure from the bladder 1 6733 flows out through the air outlet 1 6711, and the piston 672 is no longer subjected to the thrust and stops moving. Then the bladder 2 6734 is squeezed successively by the cam 2 6732. Based on the same principle, the bladder 2 blows air into the heat dissipation tube 671, pushing the piston 672 to The piston 672 moves in the heat pipe 671 toward the direction of the bladder 1 6733. Therefore, when the wind wheel 1 61 and the wind wheel 2 62 rotate, the piston 672 moves back and forth in the heat pipe 671 under the push of air pressure. At the same time, the airflow generated when the bladder 1 6733 and the bladder 2 6734 are squeezed will be blown into the interior of the cabinet 1 through the air outlet 1 6711 and the air outlet 2 6712 respectively, thereby achieving the effect of alternating cooling. It should be added here that the bladder is preferably an air bag, and the air inlet of the bladder passes through the cabinet 1. When the bladder is released from squeezing and expands to inhale, the cold air outside the cabinet 1 will be filled into the bladder through the air inlet passing through the cabinet 1. When squeezed by the cam, the cold air in the bladder can be passed into the cabinet 1, thereby enhancing the cooling effect on the components of the cabinet 1. In particular, when the heat dissipation port 2 is closed, the cold air from the outside can be filled into the cabinet 1, which can achieve a better cooling effect.

[0059] It should be added here that wind wheel 1 61 and wind wheel 2 62 are connected through a transmission member 538, so that wind wheel 1 61 and wind wheel 2 62 can rotate synchronously, ensuring that cam 1 6731 and cam 2 6732 alternately squeeze capsule 1 6733 and capsule 2 6734.

[0060] A coil is provided in the inner cavity of the heat dissipation tube 671, a magnet is provided on the piston 672, and the coil is electrically connected to the light-emitting diode 63; as the piston 672 moves back and forth in the heat dissipation tube 671, the magnet approaches and moves away from the coil, an electromotive force and current are generated in the coil, and the diode is energized;

[0061] When the piston 672 moves back and forth in the heat dissipation tube 671 along with the rotation of the wind wheel 1 61 and the wind wheel 2 62, the magnet on the piston 672 will continuously pass through the coil. According to Faraday's law of electromagnetic induction, an electromotive force that changes with time will be induced in the coil, and then an alternating current will be generated under the condition of a closed circuit. The generated current is then converted into a direct current through a rectifying circuit (such as a rectifier bridge), and the direct current is passed into the light-emitting diode 63, thereby lighting up the light-emitting diode 63.

[0062] It can be seen from the above structure that when it is necessary to detect whether the rain shield 3 is windy and rainy, when it is normally engaged at the heat dissipation port 2, the wind wheel 1 61 and the wind wheel 2 62 drive the piston 672 to move back and forth in the heat dissipation pipe 671, and then light up the light-emitting diode 63;

[0063] When the rain shield 3 is normally closed, the light blocking plate 65 on the rain shield 3 blocks the light emitting diode 63 and the light sensor 64 to form a physical blockage. In this state, the light sensor 64 automatically enters a low-power sleep mode because it cannot detect the light signal emitted by the LED, so as to avoid unnecessary energy consumption and false alarms. At the same time, it does not send any abnormal signals to maintenance personnel, and keeps the system in a silent operation state.

[0064] If the rain shield 3 fails to properly engage above the heat dissipation port 2, the light shield 65 will no longer be in the optical path of the light emitting diode 63 and the light sensor 64, allowing the light sensor 64 to directly receive the light signal emitted by the light emitting diode 63. Once the light signal is received, the light sensor 64 will determine it as an abnormal state based on a preset logic algorithm and activate the alarm mechanism, sending a clear abnormal alarm to the monitoring system or maintenance team via electronic signals (such as electrical pulses, digital coded signals, etc.) to instruct relevant personnel to immediately perform troubleshooting and maintenance work to ensure that the safety and normal operation of the equipment are not affected.

[0065] It should be added here that a micro switch for controlling the start and stop of the light-emitting diode 63 is also provided on the pressure plate 52. Therefore, the light-emitting diode 63 can be in a normal passage state only when the pressure plate 52 is pressed down by accumulated rainwater. If it is windy on a sunny day, the pressure plate 52 does not move and the light-emitting diode 63 is in an open circuit state. At this time, the rotation of the wind wheel 1 61 and the wind wheel 2 62 will only cool down the cabinet 1, and will not drive the light-emitting diode 63 to emit light on a sunny day, causing the light sensor 64 to receive the light emitted by the diode, resulting in a false alarm.

[0066] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0067] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A power distribution cabinet, characterized in that: include: A cabinet, a heat dissipation port opened on the cabinet, a rain shield rotatably mounted on the cabinet, a cooling mechanism for cooling components in the cabinet when it is windy, a protective mechanism for driving the rain shield to block the heat dissipation port when it is raining and windy, and a detection mechanism for detecting whether the rain shield blocks the heat dissipation port when it is windy and rainy; The cooling mechanism comprises: a rotating fan blade rotatably mounted on the top of the cabinet, a cooling fan rotatably mounted in the cabinet, and a driving assembly for driving the cooling fan to rotate by the rotating fan blade; The protection mechanism comprises: a water storage tank fixedly mounted on the top of the cabinet, a pressure plate slidably mounted in the water storage tank, the pressure plate being elastically connected to the water storage tank, and a rotating assembly driving the rain shield to rotate; The rotating assembly comprises: an extrusion member fixedly connected to the pressure plate, a pressure-bearing member slidably mounted in the cabinet, a gear 1 rotatably mounted on the pressure-bearing member, a half gear fixedly mounted on the rain shield, a gear 2 rotatably mounted in the cabinet, and a transmission unit that drives the gear 2 to rotate synchronously with the rotating fan blade when the extrusion member moves downward to extrude the pressure-bearing member, and drives a reset member that resets the pressure-bearing member; the gear 2 meshes with the half gear, and the gear 2 is connected to the gear 1 through a transmission member; When it rains and is windy, the rotating blades rotate with the wind, and the water storage tank collects rainwater and presses down the pressure plate, so that the rotating blades drive the cooling fan to rotate, and at the same time drive the half gear on the rain shield to rotate circumferentially, so that the rain shield is clamped on the heat dissipation port to prevent rainwater from entering the cabinet; The detection mechanism is composed of a wind wheel 1, a wind wheel 2, a light emitting diode 2, a light sensor, a light shield, and a power generation component that powers the light emitting diode as the wind wheel 1 and the wind wheel 2 rotate; the light shield is fixedly mounted on the rain shield, the wind wheel 1 and the wind wheel 2 are fixedly mounted on the top of the cabinet, and the light emitting diode and the light sensor are electrically connected in the cabinet respectively; The power generation assembly comprises: a heat dissipation pipe fixedly installed in the cabinet, a piston slidably installed in the heat dissipation pipe, and a moving assembly that drives the piston to move in the heat dissipation pipe when the wind wheel 1 and the wind wheel 2 are driven by wind, a coil is provided in the inner cavity of the heat dissipation pipe, a magnet is provided on the piston, and the coil is electrically connected to the light emitting diode; As the piston moves back and forth in the heat dissipation tube, the magnet approaches and moves away from the coil, an electromotive force and a current are generated in the coil, and the diode is energized; The moving assembly includes: a cam 1 and a cam 2 respectively fixedly connected to the wind wheel 1 and the wind wheel 2, and a capsule 1 and a capsule 2 fixedly installed at both ends of the heat dissipation pipe; The heat dissipation pipe is provided with a first air outlet and a second air outlet, and the piston is a double-headed piston.

2. A power distribution cabinet as claimed in claim 1, characterized in that: The driving assembly is composed of an active bevel gear and a driven bevel gear; the active bevel gear is fixedly connected to the rotating fan blade, the driven bevel gear is fixedly connected to the cooling fan, and the active bevel gear is meshed with the driven bevel gear.

3. A power distribution cabinet as claimed in claim 2, characterized in that: The transmission unit is composed of a turbine, a worm and a gear three; the worm is coaxially fixedly connected to the rotating fan blade, and the turbine is rotatably installed on the cabinet; the turbine is meshed with the worm, and the gear three is coaxially fixedly connected to the turbine.

4. A power distribution cabinet as claimed in claim 3, characterized in that: The pressure plate is also provided with a water leakage port, a cold discharge pipe is fixedly installed in the cabinet, and the cold discharge pipe is communicated with the water leakage port.

5. A power distribution cabinet as claimed in claim 4, characterized in that: The rain shield is also provided with a return spring, and two ends of the return spring are respectively fixedly connected to the rain shield and the cabinet.

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