A distribution cabinet with self-drying, dehumidifying and drying mechanism

Abstract

The present invention discloses a distribution cabinet with a self-drying dehumidification and drying mechanism, and relates to the technical field of distribution cabinets. The present invention includes an exhaust fan and a dehumidification and drying mechanism; at night, the exhaust fan draws the air in the distribution cabinet into a heating pipe, and discharges it from the heating pipe and flows back into the distribution cabinet to realize internal circulation; during the day, the exhaust fan draws ambient air into the distribution cabinet through the dehumidification and drying mechanism. The present invention realizes control during the day by setting the exhaust fan and the dehumidification and drying mechanism, and controls the exhaust fan to draw ambient air into the distribution cabinet through the dehumidification and drying mechanism, and discharges the air in the distribution cabinet through the exhaust port, thereby completing the drying and heat dissipation of the inside of the distribution cabinet; at the same time, at night, the exhaust fan draws the air in the distribution cabinet into the heating pipe, and discharges it from the heating pipe and flows back into the distribution cabinet to realize internal circulation, while completing the heat dissipation of the inside of the distribution cabinet, the desiccant filled in the box is dried.

Description

Technical Field

[0001] The invention belongs to the technical field of power distribution cabinets, and in particular relates to a power distribution cabinet with a self-drying, dehumidifying and drying mechanism. Background Art

[0002] The power distribution cabinet is the most basic equipment unit in the power system, and a large number of electrical components are installed inside it, so the various protection capabilities of the power distribution cabinet are required to be very high. For example, CN111755964B discloses a self-drying outdoor power distribution cabinet, including a cabinet body, a plurality of electrical components are installed in the cabinet body, a plurality of through holes are opened in the side wall of the cabinet body, a circular groove connected to the through holes is opened in the side wall of the cabinet body, a rotating disk is sealed and rotatably connected in the circular groove, and a plurality of storage tanks are opened at equal intervals along the circumference of the rotating disk on the side wall, the storage tank is filled with silica gel particles, and the two side walls of the storage tank that are opposite and horizontally placed are opened with a plurality of air holes, and a heat-conducting rubber strip is fixedly connected to the inner wall of the circular groove; in the present invention, the storage tank is filled with silica gel particles to achieve air drying, and then the power distribution cabinet is dried; however, the power distribution cabinet cannot be used again after drying, and the silica gel particles need to be replaced regularly during use. Summary of the invention

[0003] The object of the present invention is to provide a distribution cabinet with a self-drying dehumidification and drying mechanism. Through the arrangement of an exhaust fan and a dehumidification and drying mechanism, time control is achieved during the day, and the exhaust fan is controlled to draw ambient air into the distribution cabinet through the dehumidification and drying mechanism, and the air in the distribution cabinet is discharged through the exhaust port, thereby completing the drying and heat dissipation inside the distribution cabinet; at the same time, at night, the exhaust fan draws the air in the distribution cabinet into the heating pipe, and then discharges it from the heating pipe and flows back into the distribution cabinet to realize internal circulation, thereby completing the heat dissipation inside the distribution cabinet and drying the desiccant filled in the box, thereby solving the problems raised by the existing background technology.

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0005] The present invention is a power distribution cabinet with a self-drying dehumidification and drying mechanism, comprising an exhaust fan and a dehumidification and drying mechanism arranged on one side of the power distribution cabinet; the dehumidification and drying mechanism comprises a box body with an open top, a top cover is arranged on the top of the box body, the box body is filled with a reusable desiccant, and an air inlet pipe is arranged at the bottom of the box body; a heating pipe for heating the internal desiccant is arranged in the box body, one end of the heating pipe is connected to the exhaust fan through an air duct one, and the other end is connected to a side wall of the power distribution cabinet through an air duct two; the exhaust fan is also connected to the air inlet pipe through an air duct four; an exhaust port is arranged on the top of the power distribution cabinet, and an air duct three connected to the exhaust fan is arranged at the bottom; and a blocking structure is arranged at the exhaust port;

[0006] At night, the exhaust fan draws the air in the distribution cabinet into the heating pipe, and discharges it from the heating pipe back into the distribution cabinet to realize internal circulation. At this time, the top cover and the plugging structure are both in a closed state; during the day, the exhaust fan draws the ambient air into the distribution cabinet through the dehumidification and drying mechanism, and discharges the air in the distribution cabinet through the exhaust port; and at this time, the top cover and the plugging structure are both in an open state.

[0007] Furthermore, the blocking structure includes a pneumatic telescopic part A arranged on the side surrounding the exhaust port at the top of the distribution cabinet, the top of which is connected to a movable plate, and the bottom side of the movable plate is connected to a sealing plate attached to the exhaust port through a number of springs A; two inverted U-shaped frames are also arranged on the top of the distribution cabinet, and the U-shaped frames are connected to a pneumatic telescopic part B whose ends are against the upper surface of the sealing plate; and also includes a control part connected between the pneumatic telescopic part B and the pneumatic telescopic part A, and the control part is used to control the pneumatic telescopic part B and the pneumatic telescopic part A.

[0008] Furthermore, the control component includes a cylinder with air inlet and outlet parts A and air inlet and outlet parts B at both ends respectively; the bottom side of the cylinder is connected to a piston through a spring B, and a magnet A is embedded in the piston; the bottom side of the cylinder is connected to an iron block through a support, and the inner wall of the cylinder above the piston is connected to an electromagnet A through a connecting block A.

[0009] Furthermore, the top cover includes a cover plate A which is arranged in cooperation with the top of the box body, and a plurality of rectangular openings A are arranged at equal intervals on the cover plate A; a protrusion is arranged on the outer peripheral side wall of the box body, and a cover plate B is connected to the protrusion through a telescopic structure, and a plurality of rectangular openings B are arranged at equal intervals on the cover plate B; the rectangular openings B and the rectangular openings A are staggered, and an annular sealing boss is arranged on the bottom side of the cover plate B directly above any rectangular opening A.

[0010] Furthermore, the power distribution cabinet is located outdoors, and sunlight illuminates the telescopic structure when in use; the desiccant is activated carbon; it also includes a detection mechanism arranged outside for detecting the ambient light intensity and the environment; the top of the box is also provided with a rain shield, and the rain shield is fixed to the top of the top cover through a number of telescopic modules; the telescopic module includes an inner guide column and an outer guide sleeve which are socketed with each other, the bottom end of the inner guide column is connected to an electromagnet D through a connecting column, and the inner side walls of the outer guide sleeve located on the upper and lower sides of the electromagnet D are respectively provided with a third magnet and a fourth magnet; the opposite end poles of the third magnet and the fourth magnet are the same.

[0011] Furthermore, the telescopic structure includes an inner sleeve and an outer sleeve which are socketed with each other, a convex plate is arranged on one side wall of the outer sleeve, a T-shaped movable rod is movably connected to the convex plate through a spring C, and a guide sleeve which cooperates with the T-shaped movable rod is arranged on the convex plate; an air inlet opening is arranged on the bottom side surface of the outer sleeve directly below the T-shaped movable rod, and the air inlet opening is connected to a hose, and the hose is connected to a container buried underground; a cover is arranged on the bottom side surface of the outer sleeve at the air inlet opening, the end of the T-shaped movable rod passes through the top of the cover and is connected to a sealing plate B which moves up and down in the cover; an electromagnet B is arranged on the bottom side surface of the outer sleeve, and the inner sleeve is connected to a magnet B through a connecting block B.

[0012] Furthermore, the air duct one, air duct two and air duct three are respectively provided with air shut-off valve one, air shut-off valve two and air shut-off valve three; and also include a controller, which connects air shut-off valve one, air shut-off valve two and air shut-off valve three.

[0013] Furthermore, the air-blocking valves 1, 2 and 3 have the same structure, the air-blocking valve 1 comprises a first magnet and a second magnet which are arranged in the air duct 1 and are opposite to each other, at least two guide rods B are connected between the first magnet and the second magnet, an electromagnet C is arranged between the first magnet and the second magnet; the relative end magnetic poles of the first magnet and the second magnet are the same.

[0014] Furthermore, a diverter plate is also provided at the bottom of the box body, and the diverter plate is connected to the air inlet hood on one side of the air duct one through a pipeline; a mounting cover is connected to one side wall of the air duct one, and bearing one and bearing two are respectively provided on the opposite side walls of the air duct one, a fan blade shaft is connected between bearing one and bearing two, fan blades are provided on a circumference of a section of the fan blade shaft located in the air duct one, and a cam is provided on one end of the fan blade shaft located in the mounting cover; the air inlet hood is provided on the top of the mounting cover facing the cam, and a through hole connecting the pipeline is provided on the air inlet hood; a guide hole is provided on the top of the mounting cover, and a through hole is provided on the circumference of the guide hole, a guide rod A is provided through the guide hole, and the end of the guide rod A is abutted against the cam, and a sealing plate C is provided at the end of the guide rod A.

[0015] Furthermore, the diverter plate includes a plate body, a plurality of rectangular openings are arranged at equal intervals along the length direction of the plate body, a plurality of air outlets are arranged on the bottom side of the plate body located on either side of the rectangular openings along the length direction of the rectangular openings, and a cavity connected to the air outlet is arranged in the plate body; the cavity is connected to the pipeline.

[0016] The present invention has the following beneficial effects:

[0017] 1. The present invention realizes time control during the day by setting up an exhaust fan and a dehumidification and drying mechanism. The exhaust fan draws ambient air into the distribution cabinet through the dehumidification and drying mechanism, and discharges the air in the distribution cabinet through the exhaust port, thereby completing the drying and heat dissipation inside the distribution cabinet; at the same time, at night, the exhaust fan draws the air in the distribution cabinet into the heating pipe, and then discharges it from the heating pipe and flows back into the distribution cabinet to realize internal circulation, thereby completing the heat dissipation inside the distribution cabinet and drying the desiccant filled in the box, thereby completing the reuse of the desiccant.

[0018] 2. When the present invention is used, the efficiency of drying the desiccant in the box is low by only heating the desiccant in the box. Therefore, in practice, it is necessary to provide intermittent air supply to the box, and use the exhausted air flow to take away the gas in the desiccant to improve the drying efficiency and ensure that thorough drying can be completed at night.

[0019] 3. When the present invention is in use, when it is necessary to control the extension of the telescopic structure, the electromagnet B is controlled to be in the first energized state, that is, the opposite end magnetic poles of the electromagnet B and the magnet B are the same and produce a repulsive effect, that is, the inner sleeve and the outer sleeve are separated and extended; at the same time, when the telescopic structure needs to be contracted, the electromagnet B is controlled to be in the second energized state, that is, the opposite end magnetic poles of the electromagnet B and the magnet B are opposite and produce an attractive effect, and the inner sleeve and the outer sleeve are close and contracted.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 This is a diagram of the drying system of the power distribution cabinet of the present invention;

[0023] Figure 2 It is a schematic diagram of the plugging structure of the present invention;

[0024] Figure 3 for Figure 2 The main view;

[0025] Figure 4 This is a diagram showing the connection state of the control components of the present invention;

[0026] Figure 5 This is a schematic diagram of the control structure of the present invention;

[0027] Figure 6 The dehumidification and drying mechanism structure of the present invention is shown in FIG. Figure 1 ;

[0028] Figure 7 for Figure 6 The main view;

[0029] Figure 8 for Figure 6 Side view of

[0030] Fig. 9 for Figure 8 Sectional view at AA;

[0031] Fig.10 for Fig. 9 A partial enlarged view of the middle part;

[0032] Fig.11 It is a diagram showing the connected state of the telescopic structure of the present invention;

[0033] Fig.12 It is a schematic diagram of the telescopic structure of the present invention;

[0034] Fig.13 This is a schematic diagram of the structure of the mounting cover of the present invention;

[0035] Fig.14 The dehumidification and drying mechanism structure of the present invention is shown in FIG. Figure 2 ;

[0036] Fig.15 This is a schematic diagram of the telescopic module structure of the present invention;

[0037] Fig.16 This is a structural schematic diagram of a wind-blocking valve of the present invention;

[0038] Fig.17 This is a schematic diagram of the structure of the diverter plate of the present invention. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0041] The present invention is a power distribution cabinet with a self-drying dehumidification and drying mechanism, which realizes that when the air humidity is relatively low and the temperature is relatively high during the day, the dehumidification and drying mechanism is used to dry the air entering the power distribution cabinet for heat dissipation, and the ambient air is used to complete cooling in the power distribution cabinet, so as to avoid poor heat dissipation effect of the power distribution cabinet during the day; at the same time, when the air humidity is relatively high and the temperature is relatively low at night, the power distribution cabinet is controlled to perform internal circulation under the action of the exhaust fan 1, and the heat generated when the power distribution cabinet is running is used to heat and dry the desiccant that absorbs moisture to drive the moisture in the desiccant to dissipate heat, thereby completing the self-drying operation of the dehumidification and drying mechanism, and also completing the heat dissipation and cooling of the distribution cabinet.

[0042] For design purposes, please refer to Figure 1 As shown, the present invention is provided with a dehumidification drying mechanism 3 and an exhaust fan 1 on one side of the distribution cabinet 2, and the dehumidification drying mechanism 3 includes a box body 30 with an open top, a top cover 31 is provided on the top of the box body 30, the box body 30 is filled with a reusable desiccant, and an air inlet pipe 32 is provided at the bottom of the box body 30; a heating pipe 33 for heating the internal desiccant is provided in the box body 30, one end of the heating pipe 33 is connected to the exhaust fan 1 through the air duct 1 11, and the other end is connected to a side wall of the distribution cabinet 2 through the air duct 2 12; the exhaust fan 1 is also connected to the air inlet pipe 32 through the air duct 4 14; An exhaust port 20 is provided at the top, and an air duct 3 13 connected to the exhaust fan 1 is provided at the bottom; and a blocking structure 4 is provided at the exhaust port 20; thereby, at night, the exhaust fan 1 draws the air in the distribution cabinet 2 into the heating pipe 33, and discharges it from the heating pipe 33 and flows back into the distribution cabinet 2 to realize internal circulation, at this time, the top cover 31 and the blocking structure 4 are both in a closed state; during the day, the exhaust fan 1 draws the ambient air into the distribution cabinet 2 through the dehumidification and drying mechanism 3, and discharges the air in the distribution cabinet 2 through the exhaust port 20; and at this time, the top cover 31 and the blocking structure 4 are both in an open state.

[0043] It is known that, in one possible implementation, Figure 2-3 The blocking structure 4 includes a pneumatic telescopic member A41 disposed on the side of the exhaust port 20 at the top of the power distribution cabinet 2, the top of which is connected to a movable plate 42, and the bottom side of the movable plate 42 is connected to a sealing plate 44 attached to the exhaust port 20 through a plurality of springs A43; two inverted U-shaped frames 45 are also disposed on the top of the power distribution cabinet 2, and the U-shaped frames 45 are connected to a pneumatic telescopic member B46 whose ends are against the upper surface of the sealing plate 44; Figure 4 It also includes a control component 47 connected between the pneumatic telescopic component B46 and the pneumatic telescopic component A41, and the control component 47 is used to control the pneumatic telescopic component B46 and the pneumatic telescopic component A41.

[0044] When the control part 47 is used to control the pneumatic telescopic part B46 to extend, the pneumatic telescopic part A41 will contract, that is, the sealing plate 44 is controlled to cover the exhaust port 20; at the same time, when the control part 47 is used to control the pneumatic telescopic part B46 to contract, the pneumatic telescopic part A41 will control the sealing plate 44 to be pushed out from the exhaust port 20.

[0045] Of course, in the technical solution provided by the present invention, if Figure 5 , specifically providing a specific structure of a control component 47, the control component 47 includes a cylinder 470 with an air inlet and outlet part A472 and an air inlet and outlet part B471 at both ends respectively; the bottom side of the cylinder 470 is connected to a piston 477 through a spring B475, and a magnet A476 is embedded in the piston 477; the bottom side of the cylinder 470 is connected to an iron block 479 through a support 478, and the inner wall of the cylinder 470 located above the piston 477 is connected to an electromagnet A473 through a connecting block A474.

[0046] Specifically, when in use, the piston 477 is controlled to move in the cylinder 470 by driving and controlling the electromagnet A473 to turn on and off power, thereby controlling the dynamic telescopic part B46 and the pneumatic telescopic part A41.

[0047] For example, when the control electromagnet A473 is energized, the electromagnet A473 generates a magnetic force and controls the magnet A476 to move toward the side close to the electromagnet A473 until the magnet A476 contacts the electromagnet A473. At this time, the control electromagnet A473 is powered off and the magnet A476 is adsorbed on the electromagnet A473. Then, when the control electromagnet A473 is energized again and the current direction is opposite to the previous time, the electromagnet A473 generates a magnetic force and controls the magnet A476 to move toward the side away from the electromagnet A473 until the magnet A476 rests against the iron block 479. The control electromagnet A473 is powered off and the magnet A476 is adsorbed on the iron block 479.

[0048] In the above, the magnetic poles on the upper and lower sides of the electromagnet A473 are adjusted by adjusting the current direction of the electromagnet A473, and the electromagnet A473 is used to drive the magnet A476 to overcome gravity and the force of the spring B475 and move between the iron block 479 and the electromagnet A473.

[0049] In a specific embodiment, Figure 6-10 The top cover 31 includes a cover plate A310 which is arranged at the top of the box body 30, and a plurality of rectangular openings A311 are arranged at equal intervals on the cover plate A310; a protrusion 35 is arranged on the outer peripheral side wall of the box body 30, and a cover plate B312 is connected to the protrusion 35 through a telescopic structure 36, and a plurality of rectangular openings B313 are arranged at equal intervals on the cover plate B312; the rectangular openings B313 and the rectangular openings A311 are staggered, and an annular sealing boss 314 is arranged on the bottom side of the cover plate B312 directly above any rectangular opening A311.

[0050] It is understandable that in actual use, the distribution cabinet is located outdoors, and when in use, sunlight shines on the telescopic structure 36. During the day, when exposed to light, the telescopic structure 36 is heated and the internal gas expands, causing the telescopic structure 36 to extend. At this time, the cover B312 is detached from the cover A310, that is, during the day, the gas enters the box body 30 from the rectangular opening B313 and the rectangular opening A311, and flows into the air inlet pipe 32 after the moisture is removed by the desiccant in the box body 30, and flows into the distribution cabinet 2 through the air inlet pipe 32. At this time, the relatively high temperature gas originally in the distribution cabinet 2 is discharged from the exhaust port 20 set on its top.

[0051] Of course, in practice, since it takes a certain amount of time for the telescopic structure 36 to heat up and cool down, the cover plate B312 is actually raised and lowered at a slow speed; based on the design requirements of the present invention, the cover plate B312 needs to be controlled to be raised and lowered quickly in the present invention; Fig.11 Therefore, the telescopic structure 36 includes an inner sleeve 361 and an outer sleeve 360 ​​which are connected to each other. A convex plate 3601 is arranged on one side wall of the outer sleeve 360. A T-shaped movable rod 366 is movably connected to the convex plate 3601 through a spring C367. A guide sleeve 3602 cooperating with the T-shaped movable rod 366 is arranged on the convex plate 3601; an air inlet opening 365 is arranged on the bottom side of the outer sleeve 360 ​​directly below the T-shaped movable rod 366; a cover 368 is arranged on the bottom side of the outer sleeve 360 ​​located at the air inlet opening 365, and the end of the T-shaped movable rod 366 passes through the top of the cover 368 and is connected to a sealing plate B369 that moves up and down in the cover 368; an electromagnet B362 is arranged on the bottom side of the outer sleeve 360, and a magnet B364 is connected to the inner sleeve 361 through a connecting block B363; when in use, the telescopic control of the telescopic structure 36 is quickly performed by controlling the on and off of the electromagnet B362.

[0052] In the above, when the T-shaped movable rod 366 is not in contact with the inner sleeve 361, the spring C367 is in a natural state, that is, the sealing plate B369 is against the top of the cover 368 to achieve sealing; when the inner sleeve 361 moves downward to the maximum extension, the T-shaped movable rod 366 is in contact with the inner sleeve 361, and the spring C367 is driven to contract under the action of the inner sleeve 361, that is, the sealing plate B369 is against the opening 365 to achieve sealing.

[0053] Specifically, when it is necessary to control the telescopic structure 36 to extend, the control electromagnet B362 is in the first energized state, that is, the opposite end magnetic poles of the electromagnet B362 and the magnet B364 are the same and produce a repulsive effect, that is, the inner sleeve 361 and the outer sleeve 360 ​​are separated and extended; at the same time, when the telescopic structure 36 needs to be contracted, the control electromagnet B362 is in the second energized state, that is, the opposite end magnetic poles of the electromagnet B362 and the magnet B364 are opposite and produce an attractive effect, and the inner sleeve 361 and the outer sleeve 360 ​​are close and contracted.

[0054] In the above, after controlling the expansion and contraction, as Fig.12 , it is necessary to add or exhaust air into the telescopic structure 36, based on this, the air inlet opening 365 is connected to the hose 37, and the hose 37 is connected to the container 370 buried underground; when the telescopic structure 36 is controlled to extend, the gas in the container 370 is sucked into the telescopic structure 36, and conversely, when the telescopic structure 36 is controlled to contract, the gas in the container 370 is discharged from the telescopic structure 36.

[0055] Similarly, it also includes a detection mechanism arranged outside to detect the ambient light intensity and the environment. Based on this arrangement, after controlling the telescopic structure 36 to extend, it is necessary to judge whether the temperature inside the telescopic structure 36 has reached a preset value based on information such as the ambient light intensity and the ambient temperature. When the preset value is reached, that is, the telescopic structure 36 is in an extended state even after the control electromagnet B362 is powered off, then the electromagnet B362 can be controlled to be powered off.

[0056] In the above, whether the temperature in the telescopic structure 36 reaches the preset value is determined by controlling the power-off time T of the electromagnet B362 based on the information of the ambient temperature and light detection.

[0057] Of course, since the power distribution cabinet is located outdoors, it may rain, which may cause rainwater to enter the box 30 and cause the desiccant to become excessively wet. Figure 14-15Therefore, the present invention further provides a rain shield 3100 on the top of the box body 30, and the rain shield 3100 is fixed to the top of the top cover 31 through a plurality of telescopic modules 300; the telescopic module 300 includes an inner guide column 3001 and an outer guide sleeve 3000 which are sleeved with each other, the bottom end of the inner guide column 3001 is connected to the electromagnet D3003 through a connecting column 3002, and the inner side walls of the outer guide sleeve 3000 located on the upper and lower sides of the electromagnet D3003 are respectively provided with a third magnet 3004 and a fourth magnet 3005; the opposite end magnetic poles of the third magnet 3004 and the fourth magnet 3005 are the same; when implemented, the inner guide column 3001 is controlled to move in the outer guide sleeve 3000 along the vertical direction by adjusting the power supply direction of the electromagnet D3003, and the power supply is removed after the control activity is completed, which can also keep the telescopic module 300 in the extended and retracted state unchanged.

[0058] Of course, based on the switching of daytime and nighttime modes in the present invention, the present invention is provided with air closing valve one, air closing valve two and air closing valve three in air duct one 11, air closing valve two 12 and air closing valve three respectively, and utilizes the control connected with air closing valve one, air closing valve two and air closing valve three to control the switch and thus adjust the airflow direction.

[0059] It can be known that the air shut-off valve 1, the air shut-off valve 2 and the air shut-off valve 3 in the present invention have the same structure. Fig.16 Specifically, the air-closing valve 1 includes a first magnet 101 and a second magnet 102 that are arranged in an air duct 11 and are opposite to each other, at least two guide rods B103 are connected between the first magnet 101 and the second magnet 102, and an electromagnet C104 is arranged between the first magnet 101 and the second magnet 102; the opposite end magnetic poles of the first magnet 101 and the second magnet 102 are the same; when in use, the electromagnet C104 is controlled to move toward the side close to the first magnet 101 or the second magnet 102 by controlling the power supply and current direction of the electromagnet C104, and then the second magnet 102 is used to generate a blockage when the electromagnet C104 is adsorbed together, and the electromagnet C104 is in a conducting state when it is adsorbed together with the first magnet 101.

[0060] Specifically, a through hole A is provided at the center of the second magnet 102 , a through hole B is provided on the circumference of the first magnet 101 , and a through hole C is provided on the circumference of the electromagnet C104 .

[0061] It is understandable that, when the present invention is used, the efficiency of drying the desiccant in the box 30 is low when only heating is performed on the desiccant in the box 30. Therefore, in practice, it is necessary to provide intermittent air supply to the box 30 to use the exhausted air flow to take away the gas in the desiccant to improve the drying efficiency and ensure that thorough drying can be completed at night. Fig.13Therefore, the present invention sets a splitter plate 38 at the bottom of the box body 30, and the splitter plate 38 is connected to the air inlet cover 394 on one side of the air duct 11 through a pipeline; a mounting cover 39 is connected to one side wall of the air duct 11, and a bearing 111 and a bearing 2 112 are respectively arranged on the opposite side walls of the air duct 11, and a fan blade shaft 113 is connected between the bearing 111 and the bearing 2 112, and the fan blade 114 is arranged on a circumferential side of the fan blade shaft 113 located in the air duct 11, and a cam 115 is arranged at one end of the fan blade shaft 113 located at the mounting cover 39; an air inlet cover 394 is arranged on the top of the mounting cover 39 facing the cam 115, and a through hole 395 connecting the pipeline is arranged on the air inlet cover 394; a guide hole 39 is arranged on the top of the mounting cover 39 1. A through hole 392 is arranged around the guide hole 391. A guide rod A390 is arranged through the guide hole 391, and the end of the guide rod A390 is abutted against the cam 115. A sealing plate C393 is arranged at the end of the guide rod A390. Therefore, when the air duct 11 is in use, the airflow blows onto the fan blade 114 to drive the fan blade shaft 113. The fan blade shaft 113 rotates to drive the cam 115. The contact between the cam 115 and the guide rod A390 is utilized to realize the guide rod A390 to move up and down during the rotation of the cam 115. During the up and down movement of the guide rod A390, the through hole 392 is intermittently connected, and then the splitter plate 38 is utilized to complete the intermittent introduction of gas into the bottom of the box body 30.

[0062] like Fig.17 The diverter plate 38 includes a plate body 380, on which a plurality of rectangular openings 381 are arranged at equal intervals along the length direction, and a plurality of air outlets are arranged on the bottom side of the plate body 380 located on either side of the rectangular openings 381 along the length direction of the rectangular openings 381, and a cavity connected to the air outlet is arranged in the plate body 380; the cavity is connected to the pipeline, and the above arrangement is used to prevent the air outlet arranged above the plate body 380 from being blocked by the desiccant.

[0063] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0064] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A power distribution cabinet with a self-drying and dehumidifying drying mechanism, characterized in that: It comprises an exhaust fan (1) and a dehumidification and drying mechanism arranged on one side of a power distribution cabinet (2); The dehumidifying and drying mechanism (3) comprises a box body (30) with an open top, a top cover (31) is arranged on the top of the box body (30), a reusable desiccant is filled in the box body (30), and an air inlet pipe (32) is arranged on the bottom of the box body (30); A heating tube (33) for heating the internal desiccant is arranged in the box body (30); one end of the heating tube (33) is connected to the exhaust fan (1) through the air duct one (11), and the other end is connected to a side wall of the power distribution cabinet (2) through the air duct two (12); the exhaust fan (1) is also connected to the air inlet pipe (32) through the air duct four (14); The top of the power distribution cabinet (2) is provided with an exhaust port (20), and the bottom is provided with an air duct three (13) connected to the exhaust fan (1); and a blocking structure (4) is provided at the exhaust port (20); At night, the exhaust fan (1) draws air from the power distribution cabinet (2) into the heating pipe (33), and discharges the air from the heating pipe (33) back into the power distribution cabinet (2) to achieve internal circulation. At this time, the top cover (31) and the plugging structure (4) are both in a closed state. During the day, the exhaust fan (1) draws ambient air into the power distribution cabinet (2) through the dehumidification and drying mechanism (3), and exhausts the air in the power distribution cabinet (2) through the exhaust port (20); and at this time, the top cover (31) and the blocking structure (4) are both in an open state; The blocking structure (4) comprises a pneumatic telescopic member A (41) arranged on the peripheral side of the top exhaust port (20) of the power distribution cabinet (2), the top of which is connected to a movable plate (42), and the bottom side of the movable plate (42) is connected to a sealing plate (44) attached to the exhaust port (20) via a plurality of springs A (43); Two inverted U-shaped frames (45) are also provided on the top of the power distribution cabinet (2), and the U-shaped frames (45) are connected to pneumatic telescopic parts B (46) whose ends abut against the upper surface of the sealing plate (44); It also includes a control member (47) connected between the pneumatic telescopic member B (46) and the pneumatic telescopic member A (41), wherein the control member (47) is used to control the pneumatic telescopic member B (46) and the pneumatic telescopic member A (41); The top cover (31) comprises a cover plate A (310) arranged on the top of the box body (30), and a plurality of rectangular openings A (311) are arranged at equal intervals on the cover plate A (310); The outer peripheral side wall of the box body (30) is provided with a protruding portion (35), the protruding portion (35) is connected to a cover plate B (312) via a telescopic structure (36), and a plurality of rectangular openings B (313) are provided at equal intervals on the cover plate B (312); The rectangular opening B (313) and the rectangular opening A (311) are arranged in a staggered manner, and an annular sealing boss (314) is arranged on the bottom side of the cover plate B (312) directly above any rectangular opening A (311).

2. A power distribution cabinet with a self-drying and dehumidifying drying mechanism according to claim 1, characterized in that: The control member (47) comprises a cylinder (470) with an air inlet and outlet portion A (472) and an air inlet and outlet portion B (471) respectively provided at two ends; The bottom side of the cylinder (470) is connected to a piston (477) via a spring B (475), and a magnet A (476) is embedded in the piston (477); The bottom side of the cylinder (470) is connected to an iron block (479) via a support (478), and the inner side wall of the cylinder (470) located above the piston (477) is connected to an electromagnet A (473) via a connecting block A (474).

3. A power distribution cabinet with a self-drying and dehumidifying drying mechanism according to claim 1, characterized in that: The power distribution cabinet is located outdoors, and sunlight shines on the telescopic structure (36) when in use; the desiccant is activated carbon; It also includes a detection mechanism arranged outside to detect the ambient light intensity and the environment; The top of the box body (30) is also provided with a rain shield (3100), and the rain shield (3100) is fixed to the top of the top cover (31) via a plurality of telescopic modules (300); The telescopic module (300) comprises an inner guide column (3001) and an outer guide sleeve (3000) which are sleeved together, the bottom end of the inner guide column (3001) is connected to an electromagnet D (3003) via a connecting column (3002), and the inner side walls of the outer guide sleeve (3000) located on the upper and lower sides of the electromagnet D (3003) are respectively provided with a third magnet (3004) and a fourth magnet (3005); The magnetic poles at the opposite ends of the third magnet (3004) and the fourth magnet (3005) are the same.

4. A power distribution cabinet with a self-drying and dehumidifying drying mechanism according to claim 1, characterized in that: The telescopic structure (36) comprises an inner sleeve (361) and an outer sleeve (360) which are sleeved together, a convex plate (3601) is provided on one side wall of the outer sleeve (360), a T-shaped movable rod (366) is movably connected to the convex plate (3601) via a spring C (367), and a guide sleeve (3602) which cooperates with the T-shaped movable rod (366) is provided on the convex plate (3601); An air inlet opening (365) is provided on the bottom side of the outer sleeve (360) directly below the T-shaped movable rod (366), and the air inlet opening (365) is connected to a hose (37), and the hose (37) is connected to a container (370) buried underground; A cover (368) is provided on the bottom side of the outer sleeve (360) located at the air inlet opening (365); an end of the T-shaped movable rod (366) passes through the top of the cover (368) and is connected to a sealing plate B (369) that moves up and down in the cover (368); An electromagnet B (362) is provided on the bottom side of the outer sleeve (360), and a magnet B (364) is connected to the inner sleeve (361) via a connecting block B (363).

5. A power distribution cabinet with a self-drying and dehumidifying drying mechanism according to claim 1, characterized in that: The air duct one (11), the air duct two (12) and the air duct three (13) are respectively provided with air shut-off valve one, air shut-off valve two and air shut-off valve three; It also includes a controller, which is connected to air shut-off valve one, air shut-off valve two and air shut-off valve three.

6. A power distribution cabinet with a self-drying and dehumidifying drying mechanism according to claim 5, characterized in that: The air-blocking valve 1, the air-blocking valve 2 and the air-blocking valve 3 have the same structure. The air-blocking valve 1 comprises a first magnet (101) and a second magnet (102) which are arranged in the air duct 1 (11) and are arranged opposite to each other. At least two guide rods B (103) are connected between the first magnet (101) and the second magnet (102). An electromagnet C (104) is arranged between the first magnet (101) and the second magnet (102). The magnetic poles at the opposite ends of the first magnet (101) and the second magnet (102) are the same.

7. A power distribution cabinet with a self-drying and dehumidifying drying mechanism according to claim 1, characterized in that: A flow divider plate (38) is also provided at the bottom of the box body (30), and the flow divider plate (38) is connected to the air inlet cover (394) on one side of the air duct (11) through a pipeline; A mounting cover (39) is connected to one side wall of the air duct one (11), a bearing one (111) and a bearing two (112) are respectively arranged on opposite side walls of the air duct one (11), a fan blade shaft (113) is connected between the bearing one (111) and the bearing two (112), a fan blade (114) is arranged on a circumferential side of the fan blade shaft (113) located in the air duct one (11), and a cam (115) is arranged at one end of the fan blade shaft (113) located in the mounting cover (39); The air intake cover (394) is arranged on the top of the installation cover (39) facing the cam (115), and the air intake cover (394) is provided with a through hole (395) connected to a pipeline; A guide hole (391) is provided at the top of the mounting cover (39), a through hole (392) is provided around the guide hole (391), a guide rod A (390) is provided through the guide hole (391) and the end of the guide rod A (390) abuts against the cam (115), and a sealing plate C (393) is provided at the end of the guide rod A (390).

8. A power distribution cabinet with a self-drying and dehumidifying drying mechanism according to claim 7, characterized in that: The flow dividing plate (38) comprises a plate body (380), a plurality of rectangular openings (381) being arranged at equal intervals along the length direction of the plate body (380), a plurality of air outlet holes being arranged on the bottom side surface of the plate body (380) located on either side of the rectangular opening (381) along the length direction of the rectangular opening (381), and a cavity communicating with the air outlet holes being arranged inside the plate body (380); the cavity communicating with the pipeline.

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