An automatic dehumidification structure of a power cabinet for a smart grid

Abstract

The application relates to the technical field of power cabinet dehumidification, in particular to an automatic dehumidification structure of a power cabinet for smart grids, which comprises an outer frame, an opening is formed in the front end of the outer frame, a sealing door is movably installed at the opening in the front end of the outer frame, a plurality of air inlets are formed in the front end of the outer frame, and an air processor is installed at the top end of the outer frame; the automatic dehumidification structure further comprises a partition plate and an assembling mechanism. When the outer frame is cooled by external cold air, the water molecules and impurities in the cold air can be fully and effectively adsorbed by rotating the air suction fan and the fibrous electret, the liquid drops condensed after the water molecules are adsorbed by the electret and the mixed liquid combined by the liquid drops and the impurities adsorbed by the electret can be thrown out, so that the electret can continuously and effectively perform the adsorption work, the electret is self-cleaned, the service life of the electret is effectively prolonged, and the maintenance cost of the power cabinet and the workload of the staff are effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power cabinet dehumidification, and in particular to an automatic dehumidification structure of a power cabinet for smart grids. BACKGROUND

[0002] The power cabinet, also known as a power distribution cabinet, a power distribution panel or a switch cabinet, is a device used in power grids and power systems for accepting, distributing, controlling, protecting and metering electric energy. In order to dissipate heat inside the existing power cabinet, an air inlet is usually provided on the power cabinet, so that external cold air can enter the cabinet body to achieve heat dissipation. In order to better allow external cold air to enter the cabinet body, a fan is also provided at the air inlet. When the external environment has high humidity, the cold air entering the cabinet body through the air inlet will also bring moisture into the power cabinet. Once the moisture enters, the electronic components in the power cabinet are prone to corrosion due to dampness, which not only affects their performance, but also can cause the power cabinet to malfunction. Therefore, dehumidification of the cold air entering the power cabinet is very important.

[0003] The existing power cabinet mostly absorbs moisture in the cold air by adding a desiccant or other moisture-absorbing material at the air inlet or installs a semiconductor sheet to condense the moisture in the cold air. However, although the desiccant or other moisture-absorbing material can absorb moisture, its moisture absorption capacity is limited. As its moisture saturation increases, its dehumidification effect will rapidly decrease, and it cannot continuously and effectively reduce the humidity in the power cabinet. This means that the moisture-absorbing material needs to be replaced regularly, thereby increasing maintenance costs and workload. Although installing a semiconductor sheet to condense moisture in the cold air is feasible, the semiconductor sheet will emit heat when it is started. Compared with the condensing surface, the side of the semiconductor sheet that emits heat consumes more power, which not only wastes power resources but also increases the operating cost of the power cabinet, and has poor practicality. SUMMARY

[0004] The present application aims to solve the problem of poor dehumidification effect or high operating cost when the existing power cabinet dehumidifies external cold air by adding a moisture-absorbing material at the air inlet or installing a semiconductor sheet, and proposes an automatic dehumidification structure of a power cabinet for smart grids.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] An automatic dehumidification structure of a power cabinet for smart grids, comprising an outer frame, the outer frame being provided with an opening and a plurality of air inlets at the front end, a sealing door being movably installed at the opening, and an air processor being installed at the top end of the outer frame, further comprising:

[0007] The isolation plate is installed inside the outer frame, the area below the isolation plate inside the outer frame is a processing cavity, a humidity sensor is installed inside the processing cavity, the air inlet hole is connected with the inside of the processing cavity, and the assembly mechanism is arranged inside the outer frame and used for installing electronic components;

[0008] The water absorption and dust removal mechanism is arranged on the outer frame and the isolation plate, and is used for water absorption and dust removal treatment of external cold air entering the processing cavity.

[0009] The water absorption and dust removal mechanism comprises a hollow frame and a rotating guide assembly, the hollow frame is fixedly installed through the isolation plate, the top end of the hollow frame is flush with the top end of the isolation plate, the top wall and the bottom wall of the hollow frame are provided with through holes, the two through holes are rotatably connected with fixing rings, and the two fixing rings are fixedly connected with an electret.

[0010] The electret is in a fibrous shape, and is used for better absorption of water and impurities in the cold air.

[0011] The rotating guide assembly comprises a waterproof motor and a fixed block, the waterproof motor is fixedly installed at the center position of the bottom wall in the processing cavity, the output end of the waterproof motor is fixedly connected with a connecting rod, the fixed block is fixedly installed at the center position of the top end of the electret, the connecting rod penetrates through the electret and is fixedly connected with the electret, the top end of the connecting rod is fixedly connected with the bottom end of the fixed block, and a suction fan is installed on the outer wall of the connecting rod.

[0012] Preferably, the assembly mechanism comprises two lateral mounting racks and a plurality of mounting frames, the two lateral mounting racks are symmetrically installed on the two opposite side walls in the outer frame, the bottom ends of the two lateral mounting racks are fixedly connected with the top end of the isolation plate, the mounting frames are provided with fixed nuts, the mounting frames are detachably installed on the two lateral mounting racks through the fixed nuts, and the space between the side, away from the sealing door, of the mounting frame and the inner wall of the outer frame is a back cavity.

[0013] Preferably, the bottom end of the hollow frame is provided with an annular electrode plate, the inner diameter of the top end of the annular electrode plate is greater than the outer diameter of the fixing ring, and the annular electrode plate covers the outside of the suction fan.

[0014] Preferably, the space between the inner wall of the hollow frame, the electret and the two fixing rings is a water accumulation cavity, a drain pipe is fixedly installed through the inner wall of the processing cavity, one end of the drain pipe, towards the hollow frame, penetrates through the outer wall of the hollow frame and is connected with the water accumulation cavity.

[0015] Preferably, the heat dissipation mechanism comprises a plurality of heat dissipation openings, the plurality of heat dissipation openings are respectively arranged on the top of the plurality of mounting frames, and a heat dissipation heat pipe is jointly clamped in the plurality of heat dissipation openings; a cooling heat pipe is connected to the top of the heat dissipation heat pipe; one end of the cooling heat pipe away from the heat dissipation heat pipe penetrates the back cavity and penetrates the outer top wall of the hollow frame into the water storage cavity; the bottom of the heat dissipation heat pipe penetrates the outer top wall of the hollow frame and is connected to the cooling heat pipe in the water storage cavity; and cooling liquid is arranged in the heat dissipation heat pipe and the cooling heat pipe.

[0016] Preferably, the heat dissipation heat pipe is arranged in a curved and folded manner, and the part of the cooling heat pipe in the water storage cavity is arranged in a curved manner.

[0017] Preferably, a plurality of cooling pipes are arranged in the hollow frame to reduce the temperature in the hollow frame.

[0018] Compared with the prior art, the present application has the following advantages:

[0019] 1. The air inlet hole, air processor and water absorption and dust removal mechanism cooperate with each other to pre-adsorb water molecules and impurities in the cold air by rotating the fiber-like electret when the cold air from the outside is used to dissipate heat in the outer frame, thereby realizing pre-water absorption and dust removal treatment of the cold air, effectively improving the adsorption efficiency and quality of water molecules and impurities in the cold air, and using the centrifugal force generated by the rotation of the electret to throw out the liquid droplets condensed after the electret adsorbs water molecules and the mixed liquid combined by the liquid droplets and the impurities adsorbed by the electret, thereby ensuring that the electret can continuously and effectively perform adsorption work, and also realizing self-cleaning of the electret, effectively prolonging the service life of the electret, eliminating the need for regular replacement, and thereby effectively reducing the maintenance cost of the power cabinet and the workload of the staff.

[0020] 2. The humidity sensor and the annular electrode plate in the water absorption and dust removal mechanism are arranged to accelerate the rotation speed of the air suction fan and the electret and electrify the annular electrode plate when the humidity sensor detects that the humidity of the cold air is high, thereby effectively enhancing the adsorption capacity of the electret for water molecules and impurities in the cold air by using the stronger electric field effect generated by the high-speed rotating electret and the polarization of water molecules and impurities in the cold air by the electrified annular electrode plate in advance, and further improving the adsorption efficiency and quality of the electret for water molecules and impurities in the cold air, i.e. better adsorbing water molecules from cold air with high humidity, and ensuring the dehumidification quality of the cold air from the outside.

[0021] 3、The application can utilize external cold air, heat dissipation heat pipes and cooling heat pipes to dissipate heat inside the outer frame through the cooperation of the water absorption and dust removal mechanism and the heat dissipation mechanism, and can also strengthen the heat dissipation efficiency of the heat dissipation heat pipes and the cooling heat pipes with the help of the cold air, thereby improving the heat dissipation quality of the outer frame, and the liquid drops spun out by the rotating electret can dissipate heat to the cooling heat pipes connected with the heat dissipation heat pipes, so that the cooling liquid in the heat dissipation heat pipes and the cooling heat pipes that is converted from liquid state to gaseous state due to the absorption of heat inside the outer frame can be re-condensed into liquid state, thereby realizing continuous heat dissipation inside the outer frame, and effectively ensuring the heat dissipation quality inside the outer frame.

[0022] 4、The application can reduce the temperature in the water accumulation cavity through the setting of the cooling pipe in the water absorption and dust removal mechanism, which helps to improve the ability of the electret to form liquid drops after adsorbing water molecules, and the cooling of the water accumulation cavity can cooperate with the double cooling of the cooling heat pipes by the liquid drops, so that the gaseous cooling liquid in the heat dissipation heat pipes and the cooling heat pipes can be condensed into liquid state more quickly and dissipate heat inside the outer frame, thereby improving the heat dissipation efficiency inside the outer frame and further ensuring the heat dissipation quality inside the outer frame. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The overall isometric structure diagram of the automatic dehumidification structure of the power cabinet for the smart grid proposed by the application is shown in the figure.

[0024] Figure 2 The internal structure diagram of the outer frame of the automatic dehumidification structure of the power cabinet for the smart grid proposed by the application is shown in the figure.

[0025] Figure 3 The side mounting bracket and fixed nut structure diagram of the automatic dehumidification structure of the power cabinet for the smart grid proposed by the application is shown in the figure.

[0026] Figure 4 The isolation plate and hollow frame structure diagram of the automatic dehumidification structure of the power cabinet for the smart grid proposed by the application is shown in the figure.

[0027] Figure 5 The waterproof motor and electret structure diagram of the automatic dehumidification structure of the power cabinet for the smart grid proposed by the application is shown in the figure.

[0028] Figure 6 The processing cavity and drain pipe structure diagram of the automatic dehumidification structure of the power cabinet for the smart grid proposed by the application is shown in the figure.

[0029] In the figure: 1 outer frame, 2 sealing door, 3 air inlet hole, 4 air processor, 5 processing cavity, 6 isolation plate, 7 lateral mounting frame, 8 fixing nut, 9 mounting frame, 10 heat dissipation port, 11 heat dissipation heat pipe, 12 cooling heat pipe, 13 hollow frame, 14 water accumulation cavity, 15 drain pipe, 16 fixing ring, 17 waterproof motor, 18 connecting rod, 19 air suction fan, 20 annular electrode plate, 21 electret, 22 fixing block, 23 cooling pipe. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0031] Referring to Figures 1 to 6 An automatic dehumidification structure of a power cabinet for a smart grid, comprising an outer frame 1, the outer frame 1 is provided with an opening and a plurality of air inlet holes 3 at the front end, and a sealing door 2 is movably installed at the opening of the front end of the outer frame 1, an air processor 4 is installed at the top end of the outer frame 1, an isolation plate 6 is installed inside the outer frame 1, and the area below the isolation plate 6 in the outer frame 1 is a processing cavity 5, a humidity sensor is installed inside the processing cavity 5, the air inlet holes 3 are connected with the inside of the processing cavity 5, an assembly mechanism is arranged inside the outer frame 1 for installing electronic components, the assembly mechanism comprises two lateral mounting frames 7 and a plurality of mounting frames 9, the two lateral mounting frames 7 are symmetrically installed on the opposite two side walls inside the outer frame 1, and the bottom ends of the two lateral mounting frames 7 are fixedly connected with the top end of the isolation plate 6, the mounting frames 9 are all provided with fixing nuts 8, and the mounting frames 9 are detachably installed on the two lateral mounting frames 7 through the fixing nuts 8, and the space between the side of the mounting frame 9 away from the sealing door 2 and the inner wall of the outer frame 1 is a back cavity.

[0032] Referring to Figures 2 to 6 A water absorption and dust removal mechanism is arranged on the outer frame 1 and the isolation plate 6 for water absorption and dust removal treatment of external cold air entering the processing cavity 5, the water absorption and dust removal mechanism comprises a hollow frame 13 and a rotating guide assembly, the hollow frame 13 is fixedly installed through the isolation plate 6, and the top end of the hollow frame 13 is flush with the top end of the isolation plate 6, the top wall and the bottom wall of the hollow frame 13 are both provided with through holes, the two through holes are both rotatably connected with fixing rings 16, the two fixing rings 16 are fixedly connected with an electret 21, the electret 21 is in a fibrous shape, the space between the inner wall of the hollow frame 13, the electret 21 and the two fixing rings 16 is a water accumulation cavity 14, a drain pipe 15 is fixedly installed through the inner wall of the processing cavity 5, one end of the drain pipe 15 towards the hollow frame 13 penetrates through the outer wall of the hollow frame 13 and is connected with the water accumulation cavity 14, and the rotating guide assembly is arranged on the processing cavity 5 and the electret 21 for driving the electret 21 to rotate and guiding the cold air in the processing cavity 5 towards the electret 21.

[0033] Referring to Figures 4 to 6The rotating guide assembly comprises a waterproof motor 17 and a fixed block 22, the waterproof motor 17 is fixedly installed at the center position of the bottom wall in the processing cavity 5, and the output end of the waterproof motor 17 is fixedly connected with a connecting rod 18, the fixed block 22 is fixedly installed at the center position of the top end of the electret 21, the connecting rod 18 penetrates through the electret 21 and is fixedly connected with the electret 21, and the top end of the connecting rod 18 is fixedly connected with the bottom end of the fixed block 22, a suction fan 19 is installed on the outer wall of the connecting rod 18, the suction fan 19 is located below the hollow frame 13, the bottom end of the hollow frame 13 is provided with an annular electrode plate 20, the inner diameter of the top end of the annular electrode plate 20 is larger than the outer diameter of the fixed ring 16, and the annular electrode plate 20 covers the outside of the suction fan 19.

[0034] Referring to Figures 2 to 6 The heat dissipation mechanism is arranged on the assembling mechanism and the water suction and dust removal mechanism, and is used for dissipating heat in the outer frame 1, the heat dissipation mechanism comprises a plurality of heat dissipation openings 10, the plurality of heat dissipation openings 10 are respectively arranged through the top end of the plurality of mounting frames 9, and a heat dissipation heat pipe 11 is jointly clamped in the plurality of heat dissipation openings 10, the heat dissipation heat pipe 11 is arranged in a bending and folding shape, and a cooling heat pipe 12 is connected to the top end of the heat dissipation heat pipe 11, the bending and folding shape of the heat dissipation heat pipe 11 can increase the surface area, that is, the heat dissipation area of the heat dissipation heat pipe 11, so that the heat dissipation heat pipe 11 can more effectively absorb heat in the outer frame 1, thereby improving the heat dissipation efficiency of the inner part of the outer frame 1, one end of the cooling heat pipe 12 away from the heat dissipation heat pipe 11 penetrates through the back cavity and the outer top wall of the hollow frame 13 and enters the water accumulation cavity 14, the bottom end of the heat dissipation heat pipe 11 penetrates through the outer top wall of the hollow frame 13 and is connected with the cooling heat pipe 12 in the water accumulation cavity 14, the part of the cooling heat pipe 12 in the water accumulation cavity 14 is arranged in a bending shape, cooling liquid is jointly arranged in the heat dissipation heat pipe 11 and the cooling heat pipe 12, and a plurality of cooling pipes 23 are installed in the hollow frame 13, and the cooling pipes 23 are used for reducing the temperature in the hollow frame 13.

[0035] In use, first, the sealing door 2 is opened, the plurality of mounting frames 9 are detachably installed on the lateral mounting frame 7 through the fixing nuts 8, when the mounting frames 9 are installed, the specific installation number of the mounting frames 9 can be determined according to the needs of the user, and the height and position of the mounting frames 9 can also be adjusted according to the needs of the user, then the heat dissipation heat pipe 11 penetrates through the heat dissipation openings 10 on the mounting frames 9 and is clamped with the heat dissipation openings 10, then the two ends of the heat dissipation heat pipe 11 are respectively connected with the two ends of the cooling heat pipe 12, finally, the electronic elements are installed on the mounting frames 9, finally, the sealing door 2 is closed, and the preparation work is completed.

[0036] When the power cabinet is working, the air processor 4 and the waterproof motor 17 are both in an open state, and the air inlet hole 3 on the outer frame 1 can provide normal heat dissipation and ventilation requirements of the power cabinet. When the external cold air enters the power cabinet through the air inlet hole 3, it will first enter the processing cavity 5. Since the waterproof motor 17 is in an open state, the connecting rod 18 will continuously rotate at this time. The rotating connecting rod 18 drives the air suction fan 19 and the electret 21 to rotate. The humidity sensor installed in the processing cavity 5 can detect the humidity level of the cold air entering the processing cavity 5 in real time. If the humidity is detected to be low, the waterproof motor 17 will maintain a normal rotating speed. The rotating air suction fan 19 guides the cold air in the processing cavity 5 towards the electret 21. Since the electret 21 is a dielectric material that can maintain a long-term polarized state, when the cold air approaches the electret 21, the water molecules and impurities such as dust in the cold air will be polarized by the electric charge on the surface of the electret 21, and thus be adsorbed into the electret 21, thereby reducing the humidity of the cold air in the processing cavity 5 and also purifying the dust and other impurities in the air.

[0037] Since the fibrous structure is formed by the close arrangement of countless fine fibers, it forms a large specific surface area system. Compared with the block-shaped electret 21 structure, the contact area of the fibrous electret 21 with the cold air is obviously larger, thereby effectively improving the adsorption efficiency and quality of the electret 21 for water molecules and impurities in the cold air. Moreover, since there are gaps between the fibers, these gaps provide channels for the diffusion of water molecules, which can penetrate into the interior of the electret 21 along the gaps between the fibers, rather than just staying on the surface, thereby enabling the electret 21 to more fully adsorb water molecules in the cold air. At the same time, these gaps also provide a path for dust particles in the cold air to enter the interior of the electret 21, enabling the electret 21 to more effectively capture and adsorb dust and other impurities in the cold air.

[0038] At the same time, since the electret 21 is in a rotating state, when the cold air contacts and passes through the electret 21, its contact with the electret 21 is no longer limited to static contact, but flows inside the electret 21 with the rotation of the electret 21, thereby achieving more comprehensive contact. For the fibrous electret 21, only part of the fiber surface may have been able to contact the cold air and adsorb water molecules and impurities in the cold air. With the rotation of the electret 21, more fiber surfaces on the electret 21 have the opportunity to contact the cold air, thereby increasing the total area of contact between the electret 21 and water molecules and impurities, and further improving the adsorption efficiency and quality of the electret 21 for water molecules and impurities in the cold air.

[0039] In addition, the rotation of the electret 21 can make the cold air around it flow, and this dynamic flow ensures that the water molecules in the cold air can more evenly contact each part of the electret 21, and the rotation of the electret 21 can promote the charge distribution on its surface to be more uniform, so that the adsorption of the electret 21 to the water molecules is more uniform, thereby effectively avoiding the situation that the electret 21 is locally adsorbed and saturated, while other parts are not fully utilized, and effectively ensuring the adsorption quality of the electret 21 to the water molecules in the cold air.

[0040] If the humidity sensor detects that the humidity of the cold air entering the processing cavity 5 is high, it will immediately send a signal to adjust the rotation speed of the waterproof motor 17 to a higher level, so that the connecting rod 18 and the suction fan 19 and the electret 21 on the connecting rod 18 rotate faster. At this time, the annular electrode plate 20 will be in an energized state, and the energized annular electrode plate 20 will form an electric field to polarize the water molecules and impurities in the cold air flowing towards the electret 21 in advance. This pre-polarization combined with the polarization of the surface charge of the electret 21 can enhance the adsorption capacity of the electret 21 to the water molecules and impurities in the cold air, thereby achieving more sufficient adsorption. In addition, the high-speed rotating suction fan 19 can accelerate the guidance of the cold air, and the high-speed rotating electret 21 will generate a stronger electric field effect, thereby having stronger attraction to the water molecules and impurities in the cold air, thereby further improving the adsorption efficiency and quality of the water molecules and impurities in the cold air, that is, better adsorbing water molecules from cold air with high humidity.

[0041] The rotating electret 21 can throw the small droplets of water molecules adsorbed in the cold air on it to the water accumulation cavity 14 by centrifugal force, thereby avoiding the increase of the moisture saturation of the electret 21 affecting the subsequent adsorption quality, ensuring that the electret 21 can continuously and effectively perform the adsorption work. After the electret 21 adsorbs dust and other impurities in the cold air, these impurities will combine with the small liquid beads on the electret 21, which not only makes the small droplets more easily thrown out under the action of centrifugal force, but also enables the electret 21 to realize self-cleaning, thereby effectively prolonging the service life of the electret 21, without the need for regular replacement, thereby effectively reducing the maintenance cost of the power cabinet and the workload of the staff.

[0042] The cooling liquid inside the heat dissipation heat pipe 11 and the cooling heat pipe 12 can effectively absorb the heat of the electronic components on the mounting frame 9, thereby achieving heat dissipation inside the outer frame 1. Under the action of the air processor 4 and the natural convection inside the outer frame 1, the cold air after dehumidification and dust removal will move upwards in the outer frame 1 and blow on the electronic components, the heat dissipation heat pipe 11 and the cooling heat pipe 12 above the isolation plate 6, thereby achieving cooling of the electronic components, the heat dissipation heat pipe 11 and the cooling heat pipe 12. This further improves the heat dissipation quality of the heat dissipation heat pipe 11 and the cooling heat pipe 12 inside the outer frame 1. As the airflow continues to move upwards, it will eventually be discharged by the air processor 4 at the top of the outer frame 1 after completing the heat dissipation work.

[0043] When the cooling liquid inside the heat dissipation heat pipe 11 and the cooling heat pipe 12 becomes gaseous due to heat absorption, the rotating electret 21 can directly contact the cooling heat pipe 12 and cool it because the heat dissipation heat pipe 11 and the cooling heat pipe 12 are connected and the cooling heat pipe 12 is partially located in the water accumulation cavity 14. This process causes the gaseous cooling liquid inside the cooling heat pipe 12 to re-condense into liquid. Under the action of capillary force, these liquid cooling liquids will rise and return to the heat dissipation heat pipe 11. Once returned to the heat dissipation heat pipe 11, the cooling liquid will again absorb heat from the electronic components on the mounting frame 9 and re-convert into a gaseous state. This gaseous cooling liquid is then pushed into the cooling heat pipe 12, especially the part located in the water accumulation cavity 14, and again undergoes a condensation process to become liquid. The continuous performance of the above-mentioned cycle process can effectively achieve continuous heat dissipation inside the outer frame 1, thereby ensuring the heat dissipation quality inside the outer frame 1.

[0044] In addition, the curved shape of the part of the cooling heat pipe 12 located in the water accumulation cavity 14 is designed to adapt to the space shape inside the water accumulation cavity 14 and to increase the contact area between the cooling heat pipe 12 and the liquid droplets thrown by the rotating electret 21 in the water accumulation cavity 14, thereby better cooling the cooling heat pipe 12. The cooling pipe 23 arranged in the hollow frame 13 can reduce the temperature inside the hollow frame 13 (i.e. reduce the temperature inside the water accumulation cavity 14). This cooling effect helps to improve the ability of the electret 21 to form liquid droplets after adsorbing water molecules because a lower temperature is conducive to the condensation of liquid droplets. At the same time, it can cooperate with the liquid droplets to implement double cooling of the cooling heat pipe 12, so that the gaseous cooling liquid in the heat dissipation heat pipe 11 and the cooling heat pipe 12 can be condensed into liquid more quickly and perform heat dissipation inside the outer frame 1, thereby improving the heat dissipation efficiency inside the outer frame 1 and further ensuring the heat dissipation quality inside the outer frame 1. As the cooling process proceeds, a certain amount of liquid droplets will gradually accumulate in the water accumulation cavity 14. To avoid affecting the normal work of the electret 21 due to excessive water accumulation in the water accumulation cavity 14, these liquid droplets will eventually be discharged through the drain pipe 15.

[0045] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An automatic dehumidification structure of a power cabinet for a smart grid, comprising an outer frame (1), an opening and a plurality of air inlet holes (3) being provided at the front end of the outer frame (1), a sealing door (2) being movably installed at the opening, and an air processor (4) being installed at the top end of the outer frame (1), characterized in that, Also include: The isolation plate (6) is installed inside the outer frame (1), the area below the isolation plate (6) in the outer frame (1) is the processing cavity (5), a humidity sensor is installed inside the processing cavity (5), the air inlet hole (3) is connected with the inside of the processing cavity (5), and the assembly mechanism is arranged inside the outer frame (1) and used for installing electronic components; The water absorption and dust removal mechanism is arranged on the outer frame (1) and the isolation plate (6), and is used for water absorption and dust removal treatment of external cold air entering the processing cavity (5), and the heat dissipation mechanism is arranged on the assembly mechanism and the water absorption and dust removal mechanism, and is used for heat dissipation of the inside of the outer frame (1); The water absorption and dust removal mechanism includes a hollow frame (13) and a rotating guide assembly, the hollow frame (13) is fixedly installed on the isolation plate (6) and the top end of the hollow frame (13) is flush with the top end of the isolation plate (6), the top wall and the bottom wall of the hollow frame (13) are provided with through holes, the two through holes are rotatably connected with the fixed ring (16), the two fixed rings (16) are fixedly connected with the electret (21), and the rotating guide assembly is arranged on the processing cavity (5) and the electret (21) and is used for driving the electret (21) to rotate and guiding the cold air in the processing cavity (5) to the electret (21); The electret (21) is in a fibrous shape, which is used for better absorbing moisture and impurities in the cold air; The rotating guide assembly includes a waterproof motor (17) and a fixed block (22), the waterproof motor (17) is fixedly installed at the center position of the bottom wall in the processing cavity (5), the output end of the waterproof motor (17) is fixedly connected with a connecting rod (18), the fixed block (22) is fixedly installed at the center position of the top end of the electret (21), the connecting rod (18) penetrates through the electret (21) and is fixedly connected with the electret (21), the top end of the connecting rod (18) is fixedly connected with the bottom end of the fixed block (22), and a suction fan (19) is installed on the outer wall of the connecting rod (18).

2. The automatic dehumidification structure of a power cabinet for a smart grid according to claim 1, wherein The assembly mechanism includes two lateral mounting frames (7) and a plurality of mounting frames (9), the two lateral mounting frames (7) are symmetrically installed on the two opposite side walls in the outer frame (1), the bottom ends of the two lateral mounting frames (7) are fixedly connected with the top end of the isolation plate (6), and the mounting frames (9) are provided with fixed nuts (8).

3. The automatic dehumidification structure of a power cabinet for a smart grid according to claim 1, wherein The bottom end of the hollow frame (13) is provided with an annular electrode plate (20), the top end of the annular electrode plate (20) has an inner diameter greater than the outer diameter of the fixed ring (16), and the annular electrode plate (20) covers the suction fan (19) outside.

4. The automatic dehumidification structure of a power cabinet for a smart grid according to claim 1, wherein The space between the inner wall of the hollow frame (13), the electret (21) and the two fixing rings (16) is a water accumulation cavity (14), a drain pipe (15) is fixedly installed on the inner wall of the processing cavity (5) and penetrates through the outer wall of the hollow frame (13) and is connected with the water accumulation cavity (14).

5. The automatic dehumidification structure of a power cabinet for a smart grid according to claim 4, wherein The heat dissipation mechanism comprises a plurality of heat dissipation openings (10), a plurality of heat dissipation openings (10) are respectively provided on the top end of a plurality of installation frames (9), and a heat dissipation heat pipe (11) is jointly clamped in the plurality of heat dissipation openings (10), the top end of the heat dissipation heat pipe (11) is connected with a cooling heat pipe (12), the end of the cooling heat pipe (12) away from the heat dissipation heat pipe (11) penetrates through the back cavity and penetrates through the outer top wall of the hollow frame (13) into the water accumulation cavity (14), the bottom end of the heat dissipation heat pipe (11) penetrates through the outer top wall of the hollow frame (13) and is connected with the cooling heat pipe (12) in the water accumulation cavity (14), and the heat dissipation heat pipe (11) and the cooling heat pipe (12) are jointly provided with cooling liquid.

6. The automatic dehumidification structure of a power cabinet for a smart grid according to claim 5, wherein The heat dissipation heat pipe (11) is arranged in a curved and folded manner, and the part of the cooling heat pipe (12) in the water accumulation cavity (14) is arranged in a curved manner.

7. The automatic dehumidification structure of a power cabinet for a smart grid according to claim 5, wherein A plurality of cooling pipes (23) are installed in the hollow frame (13) for reducing the temperature in the hollow frame (13).

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