A low voltage distribution cabinet for building

Abstract

The present invention relates to the field of heat dissipation technology for power distribution cabinets, and specifically to a low-voltage power distribution cabinet for buildings, comprising a cabinet body, a storage plate fixedly connected inside the cabinet body, a power distribution component body placed on the upper end of the storage plate, and a rainy day heat dissipation component, the rainy day heat dissipation component including a water collecting bucket fixedly connected to the upper end of the cabinet body. The present invention has different heat dissipation methods for different weathers, water cooling is used for heat dissipation in rainy weather, wind is used to drive the fan blades to rotate for heat pipe power generation and heat dissipation in windy days, natural ventilation and heat dissipation are performed through heat dissipation holes in normal weather, and in addition to increasing convection by opening the first and second sealing plates in high temperature weather, forced ventilation and heat dissipation can be performed by a heat dissipation fan, and the heat dissipation mode can be flexibly switched according to different weather conditions. The automatic adjustment component and valve can automatically adjust the drainage path in rainy days to ensure that the rainwater in the water collecting bucket can be discharged smoothly, while ensuring the heat dissipation function and dust and rainproof function of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of heat dissipation of power distribution cabinets, and in particular to a low-voltage power distribution cabinet for buildings. Background Art

[0002] In modern buildings, low-voltage distribution cabinets are an important part of the power system, responsible for providing stable power to electrical equipment in the building and protecting the system from electrical faults. After searching, a high- and low-voltage distribution cabinet with good heat dissipation effect for construction with China's authorization publication number CN214478593U has the following shortcomings in actual use:

[0003] The existing power distribution cabinets are generally not able to adapt to different environmental conditions. In particular, when facing heavy rain and strong winds, heat dissipation and preventing water and dust from entering the cabinet become contradictory. Because heat dissipation usually has heat dissipation vents, rainwater can easily enter the cabinet through the heat dissipation vents during heavy rain. When rainwater enters the power distribution cabinet, the moisture will come into contact with electrical components in the power distribution cabinet, such as wiring terminals, wires, circuit breakers, etc. Water is a good conductor and may cause short circuits in electrical components. The dust blown in by strong winds may contain certain conductive substances (such as metal dust or moisture). Once these substances enter the power distribution cabinet, they may cause short circuits or failures between electrical components (such as wiring terminals, wires, etc.). In severe cases, they may cause damage to electrical equipment or trigger circuit breaker tripping, increase regular maintenance and cleaning work, and lead to higher maintenance costs;

[0004] Electrical components in the distribution cabinet, such as circuit breakers, contactors, transformers, etc., will generate a lot of heat when running for a long time. If the heat dissipation is not good, the temperature of the equipment will continue to rise, causing aging of the electrical components, performance degradation, and even failure. However, the existing distribution cabinet heat dissipation system is usually relatively simple, and many use external power-driven fans or air conditioners to help dissipate heat. These methods not only increase energy consumption, but also do not meet the current energy-saving and environmental protection needs. The external power-driven heat dissipation device not only consumes additional electricity, but may also be limited by external environmental factors. For example, the working efficiency of the fan will be affected in a high humidity environment, resulting in a decrease in the heat dissipation effect. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a low-voltage distribution cabinet for buildings, which can effectively solve the problem that the prior art generates a certain amount of heat during operation and when facing heavy rain and strong winds, the heat dissipation and the prevention of water and dust from entering the cabinet body become contradictory.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The present invention provides a low-voltage power distribution cabinet for buildings, comprising a cabinet body, a storage plate fixedly connected to the cabinet body, a power distribution component body placed on the upper end of the storage plate, and further comprising:

[0008] A rainy day heat dissipation component, the rainy day heat dissipation component includes a water collecting bucket fixedly connected to the upper end of the cabinet, a water inlet is provided at the upper end of the water collecting bucket, a water outlet is provided at the lower end of the water collecting bucket, a main pipeline is fixedly provided on the inner top wall of the cabinet just below the water outlet, two cooling plates are symmetrically provided at both ends of the distribution element body, branch pipelines are connected between the main pipeline and the two cooling plates, a plurality of drainage holes are provided at the lower end of the cooling plate, and a valve for controlling the connection between the water outlet and the main pipeline is also provided on the cabinet;

[0009] A wind-and-sky heat dissipation component, the wind-and-sky heat dissipation component includes a heat pipe fixedly embedded in the side wall of the cabinet, the side wall of the cabinet is also fixedly connected to an equipment box, the equipment box is rotatably connected to a rotating shaft, the shaft body of the rotating shaft is annularly fixedly connected to a plurality of fan blades, and a power generation structure is arranged in the equipment box;

[0010] A natural ventilation component, the natural ventilation component comprising a heat dissipation port provided on the outer wall of the cabinet, a plurality of heat dissipation holes provided on the inner wall of the cabinet that are all connected to the heat dissipation port, two lifting slots symmetrically provided in the cabinet, and a first sealing plate being slidably connected to the two lifting slots;

[0011] According to the above-mentioned low-voltage distribution cabinet for construction, a filter screen is provided at the upper end of the water collecting bucket, a water guide plate is obliquely provided in the cabinet below the drainage hole, a drainage groove is opened on the side wall of the cabinet, and the height of the water guide plate close to the drainage groove is smaller than the height of the water guide plate away from the drainage groove.

[0012] According to the above-mentioned low-voltage distribution cabinet for buildings, the valve includes a sliding groove opened in the cabinet body, the sliding groove is slidably connected with a sliding plate, the sliding plate is opened with a water outlet, the upper end of the water outlet is fixedly connected with a fixed plate, and a plurality of limit springs are fixedly connected between the fixed plate and the cabinet body.

[0013] According to the above-mentioned low-voltage distribution cabinet for buildings, it also includes an automatic adjustment component for adjusting valves, the automatic adjustment component includes a containing box fixedly connected to the outer wall of the cabinet body, a plurality of through holes are opened at the lower end of the containing box, a floating plate is slidingly connected to the inner wall of the containing box in a limited position, a U-shaped rod is fixedly connected to the lower end of the floating plate, a wedge block is fixedly connected to the lower end of the sliding plate, and the position of the wedge block corresponds to that of the U-shaped rod, a connecting rod is fixedly connected between the lower end of the automatic adjustment component and the first sealing plate, and the shape of the connecting rod is L-shaped.

[0014] According to the above-mentioned low-voltage distribution cabinet for construction, a dust shield is fixedly provided on the upper end of the containing box, two limit grooves are symmetrically provided on the inner wall of the containing box, and the width of the limit groove close to one end of the floating plate is smaller than the width of the limit groove away from the end of the floating plate, and two limit blocks are symmetrically fixedly connected to the floating plate and are slidably connected to the limit grooves.

[0015] According to the above-mentioned low-voltage distribution cabinet for buildings, the power generation structure includes two stator main magnetic poles symmetrically fixedly connected on the inner wall of the equipment box, a conductive coil is rotatably arranged between the two stator main magnetic poles, the conductive coil is connected to the rotating shaft, two commutators are symmetrically arranged on the outside of the rotating shaft, the commutator is fixedly connected with a brush, and two connecting wires are connected between the two brushes and the heat pipe.

[0016] According to the above-mentioned low-voltage distribution cabinet for building, it also includes a forced ventilation component, which includes an installation opening opened in the side wall of the cabinet, a filter plate is fixedly connected to the outside of the installation opening, and a cooling fan is fixedly installed on the inside of the installation opening, the inner wall of the cabinet is provided with an installation groove above the installation opening, a heat conduction box is fixedly connected in the installation groove, a sliding cavity is opened in the heat conduction box, a piston push plate is slidably connected in the sliding cavity, an expansion fluid is contained between the piston push plate and the inner wall of the sliding cavity, an end of the piston push plate away from the expansion fluid is fixedly connected to a sliding rod, a guide groove is also opened in the side wall of the cabinet between the filter plate and the cooling fan, a second sealing plate is slidably connected to the guide groove, and a movable groove that is connected to both the installation groove and the second sealing plate is also opened in the cabinet, the lower end of the sliding rod is fixedly connected to a connecting block, and the lower end of the connecting block passes through the movable groove and is fixedly connected to the second sealing plate.

[0017] According to the above-mentioned low-voltage power distribution cabinet for buildings, a proximity sensor is fixedly installed on the inner wall of the installation slot away from the heat-conducting box, the proximity sensor signal is connected to a controller, and the controller is electrically connected to the cooling fan.

[0018] According to the above-mentioned low-voltage distribution cabinet for buildings, an electromagnet is fixedly embedded in the inner bottom wall of the lifting slot, a magnetic block corresponding to the vertical position of the electromagnet is fixedly embedded in the lower end of the first sealing plate, and the electromagnet and the magnetic block magnetically repel each other.

[0019] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0020] 1. In the case of heavy rain and strong wind, it is difficult for the existing power distribution cabinet to take into account both the problem of heat dissipation and the problem of preventing water and dust from entering. In the case of heavy rain, the floating plate in the automatic adjustment component of the present invention will rise as the water level in the storage box rises, and the sliding plate is driven to slide by the U-shaped rod and the wedge block, so that the water outlet of the valve is located between the water outlet and the main pipeline, and the two are connected to allow the rainwater in the water collecting bucket to flow to the cooling plate for water cooling and heat dissipation. At the same time, the first sealing plate is driven to rise by the connecting rod to close the heat dissipation port to prevent rainwater from entering. In the case of strong wind, the wind drives the fan blades to rotate to generate electricity, so that the heat pipe electrically connected to the power generation structure can more efficiently transfer the heat generated by the current from the heat source to the heat dissipation end, and the heat dissipation effect is better.

[0021] 2. The present invention has different heat dissipation methods for different weather conditions. In light rain, the heat dissipation port is in an open state, and natural ventilation is used for heat dissipation. In heavy rain, water cooling is used for heat dissipation. In windy days, wind is used to drive the fan blades to rotate for heat pipe power generation and heat dissipation. In normal weather, natural ventilation and heat dissipation are performed through the heat dissipation holes. In high temperature weather, in addition to opening the first and second sealing plates to increase convection, forced ventilation and heat dissipation can also be performed through the cooling fan. The heat dissipation mode can be flexibly switched according to different weather conditions. The automatic adjustment component and valve can automatically adjust the drainage path on rainy days to ensure that rainwater in the water collection bucket can be discharged smoothly, while ensuring the heat dissipation function and dust and rainproof functions of the equipment. The first sealing plate and the second sealing plate can automatically switch according to changes in temperature, rain and wind, and automatically adjust the working state without manual intervention, ensuring that the temperature in the cabinet is properly controlled under different weather conditions, and at the same time ensuring the safety of the internal environment of the cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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 prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a structural schematic diagram of the present invention from a first viewing angle;

[0024] Figure 2 It is a structural schematic diagram of the second viewing angle of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the present invention from a third viewing angle;

[0026] Figure 4 It is a structural schematic diagram of the fourth viewing angle of the present invention;

[0027] Figure 5 for Figure 1 The structural diagram of the enlarged part A in the middle;

[0028] Figure 6 for Figure 4 The enlarged structural diagram of part B in the middle;

[0029] Figure 7 for Figure 1 Structural diagram of the middle valve;

[0030] Figure 8 It is a schematic diagram of the structure inside the container;

[0031] Fig. 9 for Figure 2 Schematic diagram of the enlarged structure of part C.

[0032] Figure numerals: 1, cabinet; 2, storage plate; 3, distribution component body; 4, rainy day heat dissipation component; 41, water collecting bucket; 42, water inlet; 43, main pipeline; 44, cooling plate; 45, branch pipeline; 46, drainage hole; 47, water guide plate; 48, drainage groove; 49, valve; 491, sliding plate; 492, water outlet; 493, fixed plate; 494, limit spring; 5, automatic adjustment component; 51, storage box; 52, through hole; 53, floating plate; 54, limit groove; 55, U-shaped rod; 56, wedge block; 57, dust screen; 6, wind Ceiling heat dissipation assembly; 61. heat pipe; 62. equipment box; 63. rotating shaft; 64. fan blades; 65. stator main magnetic poles; 66. conductor coil; 67. commutator; 68. brush; 69. connecting wire; 7. natural ventilation assembly; 71. heat dissipation port; 72. heat dissipation hole; 73. first sealing plate; 74. connecting rod; 8. forced ventilation assembly; 81. installation port; 82. filter plate; 83. cooling fan; 84. installation slot; 85. heat conduction box; 86. sliding cavity; 87. sliding rod; 88. second sealing plate; 89. movable slot; 810. connecting block. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0034] The present invention will be further described below in conjunction with the embodiments.

[0035] Example: Refer to Figures 1 to 9A low-voltage power distribution cabinet for building includes a cabinet body 1, a storage plate 2 is fixedly connected inside the cabinet body 1, a distribution component body 3 is placed on the upper end of the storage plate 2, and also includes a rainy day heat dissipation component 4, the rainy day heat dissipation component 4 includes a water collecting bucket 41 fixedly connected to the upper end of the cabinet body 1, a filter net is arranged on the upper end of the water collecting bucket 41, and a filter net is arranged on the upper end of the water collecting bucket 41, which helps to prevent large particles of debris from entering the water collecting bucket 41, further improve the stability of the system, and prevent the water outlet at the lower end of the water collecting bucket 41 from being blocked.

[0036] A water inlet 42 is provided at the upper end of the water collecting bucket 41, and a water outlet is provided at the lower end of the water collecting bucket 41. A main pipe 43 is fixedly provided on the inner top wall of the cabinet body 1 just below the water outlet. The water outlet corresponds to the main pipe 43 in upper and lower positions, ensuring that when the accumulated water is connected with the main pipe 43 at the water outlet, rainwater in the water collecting bucket 41 can flow downward through the main pipe 43. This design helps to guide the water to flow out smoothly, reduce the stagnation of water inside the distribution cabinet, and keep the interior dry.

[0037] Two cooling plates 44 are symmetrically arranged at both ends of the distribution component body 3, the water guide plate 47 is flat, and the diameter of the branch pipe 45 is larger than the aperture of the drainage hole 46, so as to ensure that rainwater can stay in the cooling plate 44, and take away the heat generated by the distribution component body 3, thereby ensuring the heat dissipation effect of the distribution component body 3, and absorbing heat by passing the water flow through the cooling area on the surface of the distribution component body 3, namely the cooling plate 44, and the surface of the distribution component body 3 transfers the heat to the water flow through the heat conducting medium. Water is a substance with a high specific heat capacity, which means that it can absorb relatively more heat with a small temperature change. Water also has good thermal conductivity and can quickly transfer heat from the surface of the equipment to the water flow. Through the flow of water, the heat absorbed by the surface of the equipment is taken away, so that the temperature of the equipment can be effectively controlled. In addition, there is flowing rainwater in the cooling plate 44, which can continuously and efficiently take away the heat generated by the equipment and reduce the working temperature of the equipment, thereby ensuring that the equipment can operate at a more stable and safer temperature.

[0038] Branch pipes 45 are connected between the main pipe 43 and the two cooling plates 44. A plurality of drainage holes 46 are provided at the lower end of the cooling plate 44. A water guide plate 47 is obliquely arranged below the drainage holes 46 in the cabinet 1. A drainage groove 48 is provided on the side wall of the cabinet 1. The height of the water guide plate 47 close to the drainage groove 48 is less than the height of the end away from the drainage groove 48. The height of the water guide plate 47 close to the drainage groove 48 is less than the height of the end away from the drainage groove 48. The rainwater can fall from the drainage holes 46 at the lower end of the cooling plate 44 to the upper end of the water guide plate 47 under its own gravity, and then automatically flow to the drainage groove 48 until it flows out of the cabinet 1.

[0039] The cabinet body 1 is also provided with a valve 49 for controlling the connection between the water outlet and the main pipeline 43. The valve 49 includes a sliding groove opened in the cabinet body 1, and the sliding groove is slidably connected with a sliding plate 491. The sliding plate 491 has a water outlet 492. The upper end of the water outlet 492 is fixedly connected with a fixed plate 493, and a plurality of limit springs 494 are fixedly connected between the fixed plate 493 and the cabinet body 1. The function of the valve 49 is to adjust the connection between the water outlet at the lower end of the water collecting bucket 41 and the main pipeline 43. On rainy days, the sliding plate 491 slides so that the water outlet 492 on the sliding plate 491 is located between the water outlet and the main pipeline 43, so that the water outlet is connected to the main pipeline 43, ensuring that the rainwater collected in the water collecting bucket 41 can flow to the cooling plate 44.

[0040] It also includes an automatic adjustment component 5 for adjusting the valve 49. The automatic adjustment component 5 includes a storage box 51 fixedly connected to the outer wall of the cabinet 1. A dust shield 57 is fixedly provided on the upper end of the storage box 51. The buoyancy of the floating plate 53 is related to the change of the water level. The function of the automatic adjustment component 5 is that in heavy rainy weather (the water inflow of the storage box 51 is greater than the water outflow of its through hole 52), as the water level of the storage box 51 rises, the floating plate 53 is subject to the buoyancy and rises with the rising water level, driving the U-shaped rod 55 to rise. The U-shaped rod 55 abuts the wedge block 56, driving the sliding plate 491 to slide, so that the water outlet hole 492 on the sliding plate 491 is located between the water outlet and the main pipeline 43, so that the water outlet is connected to the main pipeline 43, thereby playing the role of adjusting the switch position of the valve 49, so that the drainage system can be automatically adjusted on rainy days for water cooling and heat dissipation.

[0041] A plurality of through holes 52 are provided at the lower end of the containing box 51, and a floating plate 53 is slidably connected to the inner wall of the containing box 51. If the amount of water entering the containing box 51 is greater than the amount of water leaving the through holes 52, it indicates that the rainfall is large, and rainwater may enter the cabinet 1 through the heat dissipation vents 71 and the heat dissipation holes 72 described below. At this time, the rising water level of the containing box 51 drives the floating plate 53 and the U-shaped rod 55 to rise, and drives the first sealing plate 73 to rise through the connecting rod 74 described below. The first sealing plate 73 closes the heat dissipation vent 71 to prevent rainwater from entering the cabinet 1 through the heat dissipation vent 71, thereby protecting the equipment components in the cabinet 1.

[0042] Two limit grooves 54 are symmetrically provided on the inner wall of the receiving box 51, and the width of the limit groove 54 near the floating plate 53 is smaller than the width of the limit groove 54 away from the floating plate 53. Two limit blocks symmetrically fixedly connected to the floating plate 53 and limitedly slidably connected to the limit grooves 54 are provided. The limit grooves 54 are provided to limit the limit blocks, that is, to limit the floating plate 53, to ensure that the floating plate 53 can only slide vertically in the receiving box 51, to ensure the horizontal state of the floating plate 53, and to ensure the stability of the vertical sliding of the floating plate 53.

[0043] The lower end of the floating plate 53 is fixedly connected with a U-shaped rod 55, and the lower end of the sliding plate 491 is fixedly connected with a wedge block 56, and the position of the wedge block 56 corresponds to that of the U-shaped rod 55. The wedge block 56 plays a role in changing the direction of the force. When the U-shaped rod 55 moves upward under the upward pulling force, the U-shaped rod 55 abuts against the wedge block 56, driving the wedge block 56 to move horizontally, thereby completing the purpose of regulating the valve 49. The upward pulling force on the U-shaped rod 55 comes from the collection of rainwater by the receiving box 51. On rainy days, rainwater can be collected and the water The U-shaped rod 55 is fixedly connected to the floating plate 53, and the U-shaped rod 55 is pulled up, that is, in heavy rain, the amount of rainfall can be detected by itself. When there is water in the containing box 51, when the water level rises, the valve 49 in the rainy day heat dissipation component 4 is opened for water cooling, and at the same time, the first sealing plate 73 is pulled upward by the connecting rod 74 to close the heat dissipation port 71 to prevent rainwater from entering the cabinet 1 through the heat dissipation port 71.

[0044] Fengtian heat dissipation component 6, Fengtian heat dissipation component 6 includes a heat pipe 61 fixedly embedded in the side wall of the cabinet 1. The heat pipe 61 is a device with high-efficiency heat transfer capability and is widely used in the heat dissipation of electronic equipment. When current passes through the conductor inside the heat pipe 61, the heat generated by the current will first be transferred to the evaporation area of ​​the heat pipe 61 (usually close to the heat source). Here, the working liquid will evaporate due to absorbing heat and turn into a gas state. Since the working liquid needs to absorb a large amount of heat (latent heat) when evaporating, the heat pipe 61 can efficiently absorb the heat generated by the current. In this process, the temperature of the heat pipe 61 rises, the liquid evaporates into steam, and the temperature of the evaporation area is maintained close to the boiling point of the liquid. The evaporated working liquid turns into gas (steam). It will be transmitted to the cooling area of ​​the heat pipe 61 through the internal structure of the heat pipe 61 (usually a capillary structure or a cavity). In the cooling area, the steam will release the heat and condense into liquid. The heat released by the liquid is conducted through the outer surface of the heat pipe 61 or dissipated to the surrounding environment through a heat dissipation device. The condensed working liquid flows back to the evaporation area of ​​the heat pipe 61 again, ready to continue absorbing heat. In the heat pipe 61, the state of the working liquid is constantly converted between liquid and gas. Through this heat exchange process, the heat generated by the current is efficiently transferred from the heat source to the heat dissipation end. During the whole process, the heat is transmitted through the phase change of the working liquid (from liquid to gas, and then from gas to liquid), which can achieve efficient heat dissipation without the need for external mechanical power.

[0045] The side wall of the cabinet 1 is also fixedly connected to an equipment box 62, which is rotatably connected to a rotating shaft 63. The shaft body of the rotating shaft 63 is annularly fixedly connected to a plurality of fan blades 64. A power generation structure is arranged in the equipment box 62. Specifically, the power generation structure includes two stator main magnetic poles 65 symmetrically fixedly connected to the inner wall of the equipment box 62, and a conductive coil 66 is rotatably arranged between the two stator main magnetic poles 65. The conductive coil 66 is connected to the rotating shaft 63. Two commutators 67 are symmetrically arranged on the outer side of the rotating shaft 63. The commutator 67 is fixedly connected to a brush 68. The two brushes 68 are connected to the heat pipe 61. There are two connecting wires 69 connected in between, and the two stator main magnetic poles 65 are magnetic objects, which function to generate a magnetic field area. If the conductive coil 66 rotates in the magnetic field, the relative position of the conductive coil 66 and the magnetic field changes, and the number of magnetic flux lines cut by the conductive coil 66 will change, causing the magnetic flux to change. The change in magnetic flux generates an electromotive force. In windy weather, the wind blows toward multiple fan blades 64, driving the rotating shaft 63 to rotate, and then driving the conductive coil 66 to rotate, cutting the magnetic flux lines to generate an electromotive force, and driving current to flow in the connecting wire 69, so that current is passed through the heat pipe 61.

[0046] An electromagnet 610 is fixedly embedded in the inner bottom wall of the lifting groove, and a magnetic block corresponding to the vertical position of the electromagnet 610 is fixedly embedded in the lower end of the first sealing plate 73, and the electromagnet 610 and the magnetic block magnetically repel each other. The electromagnet 610 is electrically connected to the power generation structure, and as the wind force increases, the more current passes through the electromagnet 610, and the stronger the magnetic field generated by the electromagnet 610. According to the principle of mutual repulsion of the same level, the more current, the greater the repulsive force, that is, the stronger the wind, the greater the rise of the first sealing plate 73. In windy weather, the first sealing plate 73 rises to completely close the heat dissipation port 71 to prevent sand and dust from being blown into the cabinet 1, thereby protecting the equipment components of the cabinet 1.

[0047] The natural ventilation component 7 comprises a heat dissipation port 71 provided on the outer wall of the cabinet body 1, and a plurality of heat dissipation holes 72 which are all connected with the heat dissipation port 71 are provided on the inner wall of the cabinet body 1. Two lifting grooves are symmetrically provided in the cabinet body 1, and the two lifting grooves are slidably connected with a first sealing plate 73. A connecting rod 74 is fixedly connected between the lower end of the automatic adjustment component 5 and the first sealing plate 73, and the shape of the connecting rod 74 is L-shaped. Under normal weather conditions, there is no rain and no wind. At this time, the first sealing plate 73 is located at the lower side of the heat dissipation port 71, and the heat in the cabinet body 1 can be naturally discharged through the heat dissipation holes 72.

[0048] The cabinet 1 further comprises a forced ventilation assembly 8, which comprises an installation opening 81 provided on the side wall of the cabinet 1, a filter plate 82 being fixedly connected to the outer side of the installation opening 81, a cooling fan 83 being fixedly installed to the inner side of the installation opening 81, an installation groove 84 being provided on the inner side wall of the cabinet 1 above the installation opening 81, a heat conduction box 85 being fixedly connected to the installation groove 84, a sliding cavity 86 being provided on the heat conduction box 85, a piston push plate being slidably connected to the sliding cavity 86, an expansion fluid being contained between the piston push plate and the inner side wall of the sliding cavity 86, the working principle of the expansion fluid's thermal expansion and contraction being dependent on the volume change caused by the liquid as the temperature changes, when the temperature of the liquid rises, the movement between its molecules intensifies, resulting in volume expansion; when the temperature drops, the volume contracts.

[0049] The end of the piston push plate away from the expansion liquid is fixedly connected to a sliding rod 87, and a guide groove is further provided on the side wall of the cabinet 1 between the filter plate 82 and the cooling fan 83, and a second sealing plate 88 is slidably connected to the guide groove. A movable groove 89 connected to the mounting groove 84 and the second sealing plate 88 is further provided in the cabinet 1, and a connecting block 810 is fixedly connected to the lower end of the sliding rod 87, and the lower end of the connecting block 810 passes through the movable groove 89 and is fixedly connected to the second sealing plate 88. However, when natural ventilation and heat dissipation cannot discharge the heat in the cabinet 1 in time, the heat in the cabinet 1 accumulates, causing the heat in the cabinet 1 to rise, and the expansion liquid expands, pushing the piston push plate to slide, and the second sealing plate 88 is driven to be pulled open through the sliding rod 87 and the connecting block 810, so as to open the mounting port 81 on the other side wall of the cabinet 1, and further improve the heat dissipation efficiency by increasing the convection between the filter plate 82 and the heat dissipation port 71.

[0050] A proximity sensor is fixedly installed on the inner wall of the mounting groove 84 away from the heat conduction box 85. The proximity sensor signal is connected to the controller, and the controller is electrically connected to the cooling fan 83. If the temperature in the cabinet 1 continues to rise when the first sealing plate 73 and the second sealing plate 88 are both opened, the larger the sliding amplitude of the second sealing plate 88, the higher the temperature of the cabinet 1. When the sliding rod 87 approaches the proximity sensor, it controls the cooling fan 83 to start, force ventilation and heat dissipation in the cabinet 1, and ensure that the internal temperature of the cabinet 1 is controlled within a reasonable range to avoid overheating.

[0051] The specific working principle of the present invention is as follows:

[0052] Rainy day (heavy rain)

[0053] It should be noted that: when it rains lightly, the speed of collecting rainwater in the receiving box 51 is lower than the speed of draining water from the through hole 52, and the receiving box 51 does not store water. The heat dissipation port 71 is in an open state. At this time, the valve 49 of the heat dissipation component 4 is not opened on rainy days, because the amount of rainwater collected by light rain is small and the water cooling effect is poor. On the other hand, light rain has no effect on the opening of the heat dissipation port 71.

[0054] Rainwater flows in through the water inlet 42 of the water collecting bucket 41, and is filtered through the filter screen. Large particles of debris are prevented from entering the water collecting bucket 41. The accumulated water in the water collecting bucket 41 enters the main pipeline 43 through the water outlet, and flows along the main pipeline 43 to the cooling plate 44 below. The rainwater in the cooling plate 44 can absorb the heat generated by the distribution component body 3, take away the heat, and reduce the temperature of the equipment. The rainwater flows into the water guide plate 47 through the drainage hole 46 of the cooling plate 44, and then is discharged from the cabinet 1 through the drainage groove 48. The valve 49 automatically adjusts the connectivity between the water outlet and the main pipeline 43 to ensure that the accumulated water can flow out smoothly.

[0055] The automatic regulating component 5 can collect rainwater in the containing box 51 and cause the water level to rise on rainy days. It can detect the rainy day conditions and provide buoyancy to the floating plate 53 to make the floating plate 53 rise. Since the U-shaped rod 55 is fixedly connected to the floating plate 53, the U-shaped rod 55 is pulled up, that is, in heavy rainy weather, it can detect the amount of rainfall by itself. When there is water in the containing box 51, when the water level rises, the valve 49 in the rainy day heat dissipation component 4 is opened for water cooling. The first sealing plate 73 is connected to the floating plate 53 by the connecting rod 74. In heavy rainy weather, the heat dissipation port 71 is automatically closed to prevent rainwater from entering the cabinet.

[0056] Windy day (windy weather)

[0057] The wind drives the fan blades 64 on the outside of the equipment box 62 to rotate, driving the rotating shaft 63 to rotate. The movement between the conductive coil 66 and the stator main magnetic pole 65 generates an electromotive force, which drives the current to flow to the heat pipe 61. The heat pipe 61 absorbs the heat generated by the current, absorbs heat in the evaporation area, conducts it to the cooling area and releases heat, thereby helping the equipment to dissipate heat. The wind drives the fan blades to generate current, thereby providing cooling for the heat pipe and enhancing the heat dissipation effect. The stronger the wind, the better the heat dissipation effect. Since the electromagnet 610 is electrically connected to the power generation structure, and as the wind becomes stronger, the more current passes through the electromagnet 610, the stronger the magnetic field generated by the electromagnet 610. According to the principle of mutual repulsion of the same level, the more current, the greater the repulsion, that is, the stronger the wind, the greater the rise of the first sealing plate 73. In windy weather, the first sealing plate 73 rises to completely close the heat dissipation port 71 to prevent sand and dust from being blown into the cabinet 1, thereby protecting the equipment components of the cabinet 1.

[0058] Normal weather

[0059] In the absence of rain and wind, the first sealing plate 73 is located at the lower side of the heat dissipation port 71, and the heat dissipation hole 72 remains unobstructed, so that the heat in the cabinet 1 is naturally discharged, and the air flow helps to dissipate the heat.

[0060] Hot weather

[0061] When the temperature in the cabinet 1 is too high, the expansion fluid expands in the heat conduction box 85, pushing the piston push plate, driving the second sealing plate 88 to open. After opening, the convection between the installation port 81 and the heat dissipation port 71 increases, thereby improving the heat dissipation efficiency. The temperature in the cabinet 1 continues to rise when both the first sealing plate 73 and the second sealing plate 88 are opened. As the sliding amplitude of the second sealing plate 88 increases, the larger the sliding amplitude, the higher the temperature of the cabinet 1. When the sliding rod 87 approaches the proximity sensor, it controls the cooling fan 83 to start, and forced ventilation and heat dissipation in the cabinet 1 are performed to ensure that the internal temperature of the cabinet 1 is controlled within a reasonable range. The start of the cooling fan 83 improves the heat dissipation effect in the cabinet through forced ventilation, thereby ensuring that the internal temperature does not exceed the standard.

[0062] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A low-voltage power distribution cabinet for a building, comprising a cabinet body (1), a storage plate (2) fixedly connected to the cabinet body (1), a power distribution component body (3) placed on the upper end of the storage plate (2), characterized in that: Also includes: A rainy day heat dissipation component (4), the rainy day heat dissipation component (4) comprising a water collecting bucket (41) fixedly connected to the upper end of a cabinet (1), the upper end of the water collecting bucket (41) being provided with a water inlet (42), the lower end of the water collecting bucket (41) being provided with a water outlet, a main pipeline (43) being fixedly provided on the inner top wall of the cabinet (1) just below the water outlet, two cooling plates (44) being symmetrically provided at both ends of the power distribution element body (3), branch pipelines (45) being connected between the main pipeline (43) and the two cooling plates (44), a plurality of drainage holes (46) being provided at the lower end of the cooling plate (44), and a valve (49) for controlling the connection between the water outlet and the main pipeline (43) being further provided on the cabinet (1); A wind-to-sky heat dissipation component (6), the wind-to-sky heat dissipation component (6) comprising a heat pipe (61) fixedly embedded in a side wall of a cabinet (1), the side wall of the cabinet (1) being further fixedly connected to an equipment box (62), the equipment box (62) being rotatably connected to a rotating shaft (63), the shaft body of the rotating shaft (63) being annularly fixedly connected to a plurality of fan blades (64), and a power generation structure being arranged in the equipment box (62); A natural ventilation component (7), the natural ventilation component (7) comprising a heat dissipation port (71) provided on the outer wall of the cabinet (1), a plurality of heat dissipation holes (72) each connected to the heat dissipation port (71) provided on the inner wall of the cabinet (1), two lifting slots symmetrically provided in the cabinet (1), the two lifting slots being slidably connected to a first sealing plate (73); The valve (49) comprises a sliding groove provided in the cabinet (1), the sliding groove being slidably connected to a sliding plate (491), the sliding plate (491) being provided with a water outlet (492), the upper end of the water outlet (492) being fixedly connected to a fixing plate (493), and a plurality of limit springs (494) being fixedly connected between the fixing plate (493) and the cabinet (1); It also includes an automatic adjustment component (5) for adjusting the valve (49), the automatic adjustment component (5) includes a storage box (51) fixedly connected to the outer wall of the cabinet (1), a plurality of through holes (52) are opened at the lower end of the storage box (51), a floating plate (53) is slidably connected to the inner wall of the storage box (51), the lower end of the floating plate (53) is fixedly connected to a U-shaped rod (55), the lower end of the sliding plate (491) is fixedly connected to a wedge block (56), and the position of the wedge block (56) corresponds to that of the U-shaped rod (55), and a connecting rod (74) is fixedly connected between the lower end of the automatic adjustment component (5) and the first sealing plate (73), and the shape of the connecting rod (74) is L-shaped.

2. A low-voltage distribution cabinet for buildings according to claim 1, characterized in that: A filter screen is provided at the upper end of the water collecting bucket (41); a water guide plate (47) is obliquely provided below the drainage hole (46) in the cabinet (1); a drainage groove (48) is opened on the side wall of the cabinet (1); and the height of the water guide plate (47) at one end close to the drainage groove (48) is smaller than the height at one end away from the drainage groove (48).

3. A low-voltage distribution cabinet for buildings according to claim 1, characterized in that: A dust shielding net (57) is fixedly provided at the upper end of the containing box (51), two limiting grooves (54) are symmetrically provided on the inner side wall of the containing box (51), and the width of the limiting groove (54) at one end close to the floating plate (53) is smaller than the width at one end away from the floating plate (53), and two limiting blocks are symmetrically fixedly connected to the floating plate (53) and are slidably connected to the limiting grooves (54).

4. A low-voltage distribution cabinet for buildings according to claim 1, characterized in that: The power generation structure comprises two stator main magnetic poles (65) symmetrically fixedly connected to the inner wall of the equipment box (62), a conductive coil (66) is rotatably arranged between the two stator main magnetic poles (65), the conductive coil (66) is connected to the rotating shaft (63), two commutators (67) are symmetrically arranged on the outer side of the rotating shaft (63), the commutator (67) is fixedly connected with a brush (68), and two connecting wires (69) are connected between the two brushes (68) and the heat pipe (61).

5. A low-voltage power distribution cabinet for buildings according to claim 1, characterized in that: The cabinet (1) further comprises a forced ventilation component (8), wherein the forced ventilation component (8) comprises a mounting opening (81) provided on a side wall of the cabinet (1), a filter plate (82) being fixedly connected to the outside of the mounting opening (81), a cooling fan (83) being fixedly installed to the inside of the mounting opening (81), a mounting groove (84) being provided on the inner side wall of the cabinet (1) above the mounting opening (81), a heat conduction box (85) being fixedly connected to the mounting groove (84), a sliding cavity (86) being provided on the heat conduction box (85), a piston push plate being slidably connected to the sliding cavity (86), the piston push plate being slidably connected to the sliding cavity (86), and the piston push plate being slidably connected to the sliding cavity (86). 86) is filled with expansion fluid, the end of the piston push plate away from the expansion fluid is fixedly connected to a sliding rod (87), the side wall of the cabinet (1) is also provided with a guide groove between the filter plate (82) and the cooling fan (83), the guide groove is slidably connected to a second sealing plate (88), the cabinet (1) is also provided with a movable groove (89) connected to the mounting groove (84) and the second sealing plate (88), the lower end of the sliding rod (87) is fixedly connected to a connecting block (810), and the lower end of the connecting block (810) passes through the movable groove (89) and is fixedly connected to the second sealing plate (88).

6. A low-voltage power distribution cabinet for buildings according to claim 5, characterized in that: A proximity sensor is fixedly installed on the inner side wall of the installation groove (84) away from the heat conduction box (85), and the proximity sensor signal is connected to a controller, and the controller is electrically connected to the cooling fan (83).

7. A low-voltage power distribution cabinet for buildings according to claim 1, characterized in that: An electromagnet (610) is fixedly embedded in the inner bottom wall of the lifting groove, and a magnetic block corresponding to the vertical position of the electromagnet (610) is fixedly embedded in the lower end of the first sealing plate (73), and the electromagnet (610) and the magnetic block repel each other magnetically.

Images