CN112864826A

CN112864826A - Low-voltage switch cabinet with continuous dehumidification function in cabinet

Info

Publication number: CN112864826A
Application number: CN202110115985.2A
Authority: CN
Inventors: 李晓辉; 王海龙
Original assignee: JIANGSU HENGKAI ELECTRIC CO Ltd
Current assignee: JIANGSU HENGKAI ELECTRIC CO Ltd
Priority date: 2021-01-28
Filing date: 2021-01-28
Publication date: 2021-05-28
Anticipated expiration: 2041-01-28
Also published as: CN112864826B

Abstract

The invention discloses a low-voltage switch cabinet with an in-cabinet continuous dehumidification function, which comprises a switch cabinet body and a dehumidification box, wherein an air inlet pipeline and an air return pipeline are fixedly connected between the switch cabinet body and the dehumidification box together, the air inlet pipeline is positioned below the air return pipeline, an axial flow fan and a filtering component are arranged in the middle of the air inlet pipeline, the filtering component is positioned on one side close to the switch cabinet body, a secondary dehumidification component is arranged on the upper part of an inner cavity of the dehumidification box, at least three mounting grooves are formed in the left side wall of the inner cavity of the dehumidification box at equal intervals, a condensation component is correspondingly arranged in each mounting groove, a drainage component is arranged at the right end of the dehumidification box, a heat dissipation fin and a control box are fixedly installed at the left end of the dehumidification box, and a single-opening. The low-voltage switch cabinet with the function of continuously dehumidifying in the cabinet can continuously dehumidify the interior of the switch cabinet, does not occupy space in the cabinet, has a good dehumidifying effect, and is suitable for popularization.

Description

Low-voltage switch cabinet with continuous dehumidification function in cabinet

Technical Field

The invention relates to the field related to electric appliance cabinets, in particular to a low-voltage switch cabinet with a cabinet interior continuous dehumidification function.

Background

The low-voltage switch cabinet belongs to a product listed in a 3C certification mandatory certification product catalog. The device is suitable for industries such as power plants, petroleum, chemical industry, metallurgy, textile, high-rise buildings and the like, and is used for power transmission, distribution and electric energy conversion. The low-voltage switch cabinet can be divided into a GCS type low-voltage switch cabinet, a GCK draw-out type switch cabinet, a GGD low-voltage fixed switch cabinet, an assembled low-voltage switch cabinet and the like.

In summer, particularly in plum rain season, the weather is humid and high-heat, and equipment such as a circuit breaker in a switch cabinet can generate heat after long-term operation, so that condensation is generated in a high-low voltage cabinet in a substation. The switch cabinet has higher protection grade and poorer heat dissipation and ventilation conditions, forms condensation due to too good sealing, is attached to the insulating surface to accelerate the degradation of an insulating medium, and causes the tripping of a circuit breaker or the damage of electrical equipment. The problem of discharging and heating of equipment is very prominent when the switch cabinet is hung on a net for several years, and most of the reasons are that the dehumidification and cooling effects of the switch cabinet are not good. The tight plugging degree of the switch cabinet and the cable trench cannot meet the requirement or the switch cabinet and the cable trench operate for a long time, and the moisture is inevitably caused to enter from a tiny gap. If the condensation is serious, ionization can occur, and ozone is generated at the same time, so that the normal operation of the switch cabinet is influenced, and even accidents are caused. Therefore, the switch cabinet is necessary to be cooled and dehumidified in time.

In the prior art, most of dehumidifying devices for switch cabinets are simple in structure, continuous automatic dehumidification is difficult to carry out, the dehumidifying effect is not ideal enough, most of dehumidifying devices are installed inside the switch cabinet, certain difficulty is brought to the installation of internal electrical equipment, and therefore the low-voltage switch cabinet with the interior continuous dehumidifying function is provided.

Disclosure of Invention

The invention mainly aims to provide a low-voltage switch cabinet with a function of continuously dehumidifying in the cabinet, which can effectively solve the problems in the background technology.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides a low-voltage switchgear with last dehumidification function in cabinet, includes the cubical switchboard body and dehumidification case, common fixedly connected with admission line and return air duct between the cubical switchboard body and the dehumidification case, admission line is located return air duct below, and the cubical switchboard body and dehumidification case are linked together through admission line and return air duct, the admission line middle part is provided with axial fan and filtering component, and filtering component is located the one side that is close to the cubical switchboard body, dehumidification incasement chamber upper portion is provided with secondary dehumidification subassembly, at least three mounting groove has been seted up to dehumidification incasement chamber left side wall equidistance, and corresponds in every mounting groove and be provided with a condensation subassembly, dehumidification case right-hand member is provided with drainage component, dehumidification case left end fixed mounting has radiating fin and control box, dehumidification case rear end upper portion movable mounting has the single door that opens.

Preferably, the drainage subassembly includes at least three water receiving tank, the equal fixed mounting of water receiving tank is in dehumidification case right side tank wall, and the water receiving tank is inside cavity and upper end open-ended cuboid structure, the water receiving tank left part all stretches into the dehumidification incasement chamber, the partial fixedly connected with drainage branch pipe that the water receiving tank rear end all is located the dehumidification incasement side, and the common fixed mounting of one end that the water receiving tank was kept away from to the drainage branch pipe has the drain main of vertical direction.

Preferably, the filtering component comprises a vertical plate, a filter screen is fixedly mounted in the middle of one end of the vertical plate, sliding grooves are formed in the inner wall of the air inlet pipeline and the inner wall of the inner cavity, mounting blocks are fixedly mounted on the right side of the upper end of the air inlet pipeline and the right side of the lower end of the air inlet pipeline, first mounting holes which are vertically penetrated are formed in the right parts of the upper ends of the two mounting blocks, a second mounting hole is formed in the upper end of the vertical plate, and a stabilizing bolt is fixedly mounted in the second mounting hole and the first mounting hole together.

Preferably, the filter screen is connected in the two chutes in a sliding manner, and a sealing gasket is arranged between the filter screen and the two chutes.

Preferably, the condensation subassembly includes semiconductor refrigeration piece and heat conduction metal sheet, fixed mounting is inlayed in the mounting groove to the semiconductor refrigeration piece, and the refrigeration end of semiconductor refrigeration piece towards the dehumidification incasement chamber, the refrigeration end of semiconductor refrigeration piece is hugged closely to the heat conduction metal sheet, the heating end and the radiating fin looks butt of semiconductor refrigeration piece, the one end fixed mounting that the semiconductor refrigeration piece was kept away from to the heat conduction metal sheet has a plurality of guide bar, and guide bar and heat conduction metal sheet be the integrated into one piece structure, a plurality of the common fixedly connected with two stabilizer bars that are parallel to each other in guide bar upper end, and the equal fixed mounting of two stabilizer bar front ends has the connecting plate, every the through-hole of symmetry is all seted up to the connecting plate front end.

Preferably, the water conservancy diversion pole is that up end and horizontal plate flush and lower extreme surface downward convex strip structure, every the water conservancy diversion pole surface has all been paintd hydrophobic coating, preferred polytetrafluoroethylene coating, the installation of 30 jiaos is all personally submitted with the level to the water conservancy diversion pole, and the one end that the heat conduction metal sheet was kept away from to the water conservancy diversion pole all extends to the opening top of water receiving tank.

Preferably, the secondary dehumidification subassembly includes mounting panel and backup pad, the mounting panel is provided with two and respectively fixed mounting in dehumidification box inner chamber left side wall upper portion and right side wall upper portion, and two mounting panels are equal height, the rectangular channel has been seted up at backup pad upper end middle part, and a plurality of connecting rod of equidistance fixedly connected with in this rectangular channel, the symmetry fixed mounting in position that the backup pad lower extreme is located the rectangular channel both sides has two L templates, and the equal symmetry of the horizontal part of two L templates sets up the first screw of two upper and lower break-over, two the second screw has all been seted up with the corresponding position of first screw in mounting panel upper end, and is provided with stop bolt jointly in every corresponding first screw of group and the second screw, solid desiccant is placed to the backup pad upper end, the preferred silica gel drier that discolours of solid.

Preferably, a sealing ring is arranged at the joint of the single-door and the dehumidifying box, and an observation window is arranged in the middle of the single-door.

Preferably, the semiconductor refrigeration sheet and the axial flow fan are both electrically connected with a control box, a programming controller is arranged in the control box, and a humidity sensor is arranged in the switch cabinet body; the humidity sensor is provided with a highest threshold and a lowest threshold, when the humidity sensor detects that the humidity in the switch cabinet body is higher than the highest threshold, the axial flow fan and the semiconductor refrigerating piece are started to work through the programming controller in the control box, and when the humidity sensor detects that the humidity in the switch cabinet body is lower than the lowest threshold, the axial flow fan and the semiconductor refrigerating piece are started to stop working through the programming controller in the control box.

Compared with the prior art, the invention has the following beneficial effects:

the invention discloses a low-voltage switch cabinet with a continuous dehumidification function in the cabinet, which comprises the following components in parts by weight: when the humidity sensor works actually, the humidity sensor is provided with a highest threshold and a lowest threshold, when the humidity sensor detects that the humidity in the switch cabinet body is higher than the highest threshold, the axial flow fan and the semiconductor refrigerating sheet work through a programmed controller in the control box, the axial flow fan works to send the moisture in the switch cabinet body into the dehumidifying box, the water vapor condenses into small water drops on the outer surface of the guide rod after being cooled, the guide rod is installed at an angle of 30 degrees with the horizontal plane, one end of the guide rod, far away from the heat conducting metal plate, extends to the upper part of an opening of the water receiving box, the condensed water drops slide down under the action of the gravity of the guide rod to fall into the water receiving box to be collected so as to achieve the aim of dehumidification, when the humidity sensor detects that the humidity in the switch cabinet body is lower than the lowest threshold, the axial flow fan and the semiconductor refrigerating sheet are started to stop working through the programmed controller in the control box, the humidity sensor, the dehumidification effect is good; in addition, through being provided with filtering component, in the actual work process, can avoid debris in the cubical switchboard to get into the admission line and lead to its jam through the filter screen, in addition through two spouts, second mounting hole, first mounting hole and firm bolt cooperation, can be convenient for regularly take out the filter screen and clear up to all be provided with sealed the pad between filter screen and the two spouts, utilize sealed the steadiness that can strengthen the filter screen installation.

Drawings

FIG. 1 is a schematic diagram of a rear right view of a low voltage switchgear with a continuous dehumidification function in the switchgear according to the present invention;

FIG. 2 is a schematic view of a left rear view of a low-voltage switchgear with a continuous dehumidification function in the switchgear according to the present invention;

FIG. 3 is a schematic diagram of the installation position of the drainage assembly of the low-voltage switch cabinet with the function of continuous dehumidification in the cabinet;

FIG. 4 is a schematic view of the installation structure of the filtering component of the low-voltage switch cabinet with the function of continuous dehumidification in the cabinet according to the present invention;

FIG. 5 is a schematic diagram illustrating the connection between the condensing assembly and the heat dissipating fins of the low-voltage switchgear with the continuous dehumidification function inside the switchgear according to the present invention;

FIG. 6 is a schematic diagram of the overall structure of a condensation assembly of a low-voltage switchgear with a continuous dehumidification function inside the switchgear according to the present invention;

FIG. 7 is a cross-sectional view of a guide bar of a low-voltage switchgear with a continuous dehumidification function inside the switchgear according to the present invention;

fig. 8 is a schematic structural diagram of a secondary dehumidification assembly of a low-voltage switch cabinet with an in-cabinet continuous dehumidification function according to the invention.

In the figure: 1. a switch cabinet body; 2. a dehumidification box; 3. an air intake duct; 4. an axial flow fan; 5. a filter assembly; 51. a vertical plate; 52. filtering with a screen; 53. mounting blocks; 54. a first mounting hole; 55. a second mounting hole; 56. a chute; 57. a gasket; 58. stabilizing the bolt; 6. a secondary dehumidification assembly; 61. mounting a plate; 62. a support plate; 63. a connecting rod; 64. an L-shaped plate; 65. a first screw hole; 66. a second screw hole; 67. a limit bolt; 7. a single door is opened; 8. a return air duct; 9. a control box; 10. a condensing assembly; 101. a semiconductor refrigeration sheet; 102. a heat conductive metal plate; 103. a guide rod; 104. a stabilizer bar; 105. a connecting plate; 106. a through hole; 11. a drainage assembly; 111. a water receiving tank; 112. water drainage branch pipes; 113. a main drain pipe; 12. a heat dissipating fin; 13. and (4) mounting the groove.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in figures 1-8, a low-voltage switch cabinet with a continuous dehumidification function in the cabinet comprises a switch cabinet body 1 and a dehumidification box 2, wherein an air inlet pipeline 3 and an air return pipeline 8 are fixedly connected between the switch cabinet body 1 and the dehumidification box 2 together, the air inlet pipeline 3 is positioned below the air return pipeline 8, the switch cabinet body 1 and the dehumidification box 2 are communicated with the air return pipeline 8 through the air inlet pipeline 3, an axial flow fan 4 and a filtering component 5 are arranged in the middle of the air inlet pipeline 3, the filtering component 5 is positioned at one side close to the switch cabinet body 1, a secondary dehumidification component 6 is arranged at the upper part of the inner cavity of the dehumidification box 2, at least three mounting grooves 13 are equidistantly arranged on the left side wall of the inner cavity of the dehumidification box 2, a condensation component 10 is correspondingly arranged in each mounting groove 13, a drainage component 11 is arranged at the right end of the dehumidification box 2, a heat radiation fin 12 and, a single-door 7 is movably arranged at the upper part of the rear end of the dehumidification box 2; wherein, the junction of singly opening door 7 and dehumidification case 2 is provided with the sealing washer, and the singly opening door 7 middle part is provided with the observation window, can be convenient for observe the condition in the dehumidification case 2 through the observation window on the singly opening door 7.

Specifically, please refer to fig. 3, the drainage assembly 11 includes at least three water receiving tanks 111, the water receiving tanks 111 are all fixedly mounted on the right side wall of the dehumidification tank 2, the water receiving tanks 111 are all of a cuboid structure with a hollow interior and an open upper end, the left portion of the water receiving tank 111 extends into the inner cavity of the dehumidification tank 2, the rear ends of the water receiving tanks 111 are all located at the outer side of the dehumidification tank 2 and are fixedly connected with drainage branch pipes 112, and one ends of the drainage branch pipes 112 far away from the water receiving tanks 111 are jointly and fixedly mounted with a drainage main pipe 113 in the vertical direction.

The main drain pipe 113 is communicated with the insides of the plurality of branch drain pipes 112, each branch drain pipe 112 is communicated with the inside of the water receiving tank 111 connected with the branch drain pipe 112, and water in the water receiving tank 111 can enter the main drain pipe 113 through the branch drain pipe 112 and be discharged.

Referring to fig. 4, the filtering assembly 5 includes a vertical plate 51, a filter screen 52 is fixedly mounted in the middle of one end of the vertical plate 51, sliding grooves 56 are formed in the top wall and the bottom wall of the inner cavity of the air inlet duct 3, mounting blocks 53 are fixedly mounted on the right side of the upper end and the right side of the lower end of the air inlet duct 3, first mounting holes 54 penetrating from top to bottom are formed in the right portions of the upper ends of the two mounting blocks 53, a second mounting hole 55 is formed in the upper end of the vertical plate 51, and a stabilizing bolt 58 is fixedly mounted in the two second mounting holes 55 and the first mounting hole 54.

It should be noted that the filter screen 52 is slidably connected in the two sliding grooves 56, and the sealing gaskets 57 are respectively arranged between the filter screen 52 and the two sliding grooves 56, in the actual working process, the axial flow fan 4 works to send the air in the switch cabinet body 1 into the dehumidification box 2 through the air inlet pipeline 3, in the process, the filter screen 52 can prevent impurities in the switch cabinet from entering the air inlet pipeline 3 to cause blockage of the air inlet pipeline 3, in addition, the filter screen 52 can be conveniently taken out and cleaned regularly through the matching of the two sliding grooves 56, the second mounting hole 55, the first mounting hole 54 and the stabilizing bolt 58, and the sealing gaskets 57 are respectively arranged between the filter screen 52 and the two sliding grooves 56, so that the stability of the installation of the filter screen 52 can be enhanced by the sealing gaskets 57.

Referring to fig. 5-7, the condensing assembly 10 includes a semiconductor chilling plate 101 and a heat conducting metal plate 102, the semiconductor chilling plate 101 is fixedly mounted in the mounting groove 13 in an embedded manner, a chilling end of the semiconductor chilling plate 101 faces an inner cavity of the dehumidifying box 2, the heat conducting metal plate 102 is tightly attached to the chilling end of the semiconductor chilling plate 101, a heating end of the semiconductor chilling plate 101 is abutted to the heat radiating fin 12, a plurality of guide rods 103 are fixedly mounted at one end of the heat conducting metal plate 102 far away from the semiconductor chilling plate 101, the guide rods 103 and the heat conducting metal plate 102 are of an integrally formed structure, two parallel stabilizer bars 104 are fixedly connected to the upper end of each guide rod 103, connecting plates 105 are fixedly mounted at the front ends of the two stabilizer bars 104, and symmetrical through holes 106 are formed at the front ends of the connecting plates 105.

Wherein, water conservancy diversion pole 103 flushes and the lower extreme downward convex stripe structure for up end and horizontal plate, and every water conservancy diversion pole 103 surface has all been paintd hydrophobic coating, preferred polytetrafluoroethylene coating, and the installation of 30 jiaos is all personally submitted with the horizontal to water conservancy diversion pole 103, and the one end that water conservancy diversion pole 103 kept away from heat conduction metal sheet 102 all extends to the opening top of water receiving tank 111.

Therefore, after the semiconductor refrigeration sheet 101 is electrified, the temperature of the refrigeration end of the semiconductor refrigeration sheet is rapidly reduced, and the temperature of the guide rod 103 can be reduced through the heat conduction metal plate 102, moisture in the switch cabinet body 1 is sent into the dehumidification box 2 by the operation of the axial flow fan 4, water vapor condenses into small water drops on the outer surface of the guide rod 103 after being cooled, the guide rod 103 is installed at an angle of 30 degrees with the horizontal plane, one end of the guide rod 103 far away from the heat conduction metal plate 102 extends to the upper part of the opening of the water receiving box 111, the condensed water drops further slide down under the action of self gravity to fall into the water receiving box 111 for collection, a hydrophobic coating is smeared on the outer surface of each guide rod 103, a polytetrafluoroethylene coating is preferred, and the water drops on the guide rod 103 can slide down more quickly.

Referring to fig. 8, the secondary dehumidifying assembly 6 includes a mounting plate 61 and a supporting plate 62, the mounting plate 61 is provided with two mounting plates 61 and is respectively and fixedly mounted on the upper portion of the left side wall and the upper portion of the right side wall of the inner cavity of the dehumidifying box 2, the two mounting plates 61 are equal in height, a rectangular groove is formed in the middle of the upper end of the supporting plate 62, a plurality of connecting rods 63 are fixedly connected in the rectangular groove at equal intervals, two L-shaped plates 64 are symmetrically and fixedly mounted at positions of the lower end of the supporting plate 62 at two sides of the rectangular groove, two first screw holes 65 penetrating up and down are symmetrically formed in horizontal portions of the two L-shaped plates 64, second screw holes 66 are formed in positions of the upper ends of the two mounting plates 61 corresponding to the first screw holes 65.

It should be noted that solid desiccant is placed at the upper end of the supporting plate 62, and the solid desiccant is preferably allochroic silica gel desiccant, so that the allochroic silica gel desiccant can be used for further moisture absorption, the drying degree of air is improved, moist air is prevented from entering the switch cabinet body 1 again, when the allochroic silica gel desiccant is saturated in moisture absorption, the color of the allochroic silica gel desiccant changes, observation is performed through the observation window at the single-opening door 7, and meanwhile, the whole supporting plate 62 is convenient to take down so as to replace the allochroic silica gel desiccant.

In the invention, the semiconductor refrigeration sheet 101 and the axial flow fan 4 are both electrically connected with the control box 9, a programming controller is arranged in the control box 9, and a humidity sensor is arranged in the switch cabinet body 1; wherein, during the actual work, the humidity sensor is provided with a highest threshold and a lowest threshold, when the humidity sensor detects that the humidity in the switch cabinet body 1 is higher than the highest threshold, the axial flow fan 4 and the semiconductor refrigeration sheet 101 are started to work through the programmed controller in the control box 9, the axial flow fan 4 works to send the moisture in the switch cabinet body 1 into the dehumidification box 2, the water vapor condenses into small water drops on the outer surface of the diversion rod 103 after encountering cold, because the diversion rod 103 is installed at an angle of 30 degrees with the horizontal plane, and one end of the diversion rod 103 far away from the heat conducting metal plate 102 extends to the upper part of the opening of the water receiving box 111, the condensed water drops slide down into the water receiving box 111 under the action of self gravity to be collected, so as to achieve the purpose, when the humidity in the dehumidification switch cabinet body 1 is detected to be lower than the lowest threshold, the axial flow fan 4 and the semiconductor refrigeration sheet 101 are started to stop working through the programmed controller in the control box, high efficiency, energy saving and good dehumidification effect.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a low tension switchgear with continuous dehumidification function in cabinet, includes the cubical switchboard body (1) and dehumidification case (2), its characterized in that: the dehumidifying cabinet is characterized in that an air inlet pipeline (3) and an air return pipeline (8) are fixedly connected between the switch cabinet body (1) and the dehumidifying box (2) together, the air inlet pipeline (3) is located below the air return pipeline (8), the switch cabinet body (1) and the dehumidifying box (2) are communicated with the air return pipeline (8) through the air inlet pipeline (3), an axial flow fan (4) and a filtering component (5) are arranged in the middle of the air inlet pipeline (3), the filtering component (5) is located on one side close to the switch cabinet body (1), a secondary dehumidifying component (6) is arranged on the upper portion of an inner cavity of the dehumidifying box (2), at least three mounting grooves (13) are formed in the left side wall of the inner cavity of the dehumidifying box (2) at equal intervals, a condensing component (10) is correspondingly arranged in each mounting groove (13), a water draining component (11) is arranged at the right end of the dehumidifying box (2), and a heat radiating fin (12) and a control box (9) are fixedly, the upper part of the rear end of the dehumidification box (2) is movably provided with a single-door (7).

2. The low-voltage switch cabinet with the function of continuously dehumidifying in the cabinet as claimed in claim 1, wherein: drainage subassembly (11) are including at least three water receiving tank (111), the equal fixed mounting in dehumidification case (2) right side tank wall of water receiving tank (111), and water receiving tank (111) are inside cavity and upper end open-ended cuboid structure, the water receiving tank (111) left part all stretches into dehumidification case (2) inner chamber, the part fixedly connected with drainage branch pipe (112) that water receiving tank (2) outside all was located in water receiving tank (111) rear end, and the common fixed mounting in one end that water receiving tank (111) was kept away from in drainage branch pipe (112) has the main sewer (113) of vertical direction.

3. The low-voltage switch cabinet with the function of continuously dehumidifying in the cabinet as claimed in claim 1, wherein: filtering component (5) includes vertical board (51), the one end middle part fixed mounting of vertical board (51) has filter screen (52), spout (56) have all been seted up to admission line (3) inner chamber roof and inner chamber diapire, equal fixed mounting in admission line (3) upper end right side and lower extreme right side has installation piece (53), and first mounting hole (54) of break-over about two installation pieces (53) upper end right parts all seted up, second mounting hole (55), two have been seted up to vertical board (51) upper end common fixed mounting has firm bolt (58) in second mounting hole (55) and first mounting hole (54).

4. The low-voltage switch cabinet with the function of continuously dehumidifying in the cabinet as claimed in claim 3, wherein: the filter screen (52) is connected in the two sliding grooves (56) in a sliding manner, and a sealing gasket (57) is arranged between the filter screen (52) and the two sliding grooves (56).

5. The low-voltage switch cabinet with the function of continuously dehumidifying in the cabinet as claimed in claim 1, wherein: the condensation assembly (10) comprises a semiconductor refrigeration piece (101) and a heat-conducting metal plate (102), the semiconductor refrigeration piece (101) is embedded and fixedly arranged in the mounting groove (13), the refrigerating end of the semiconductor refrigerating sheet (101) faces the inner cavity of the dehumidifying box (2), the heat-conducting metal plate (102) is tightly attached to the refrigerating end of the semiconductor refrigerating sheet (101), the heating end of the semiconductor refrigeration sheet (101) is abutted with the radiating fin (12), a plurality of guide rods (103) are fixedly arranged at one end of the heat-conducting metal plate (102) far away from the semiconductor refrigeration sheet (101), the guide rods (103) and the heat conducting metal plate (102) are of an integrated structure, the upper ends of a plurality of guide rods (103) are jointly and fixedly connected with two mutually parallel stabilizer bars (104), and the front ends of the two stabilizer bars (104) are fixedly provided with connecting plates (105), and the front end of each connecting plate (105) is provided with symmetrical through holes (106).

6. The low-voltage switch cabinet with the function of continuously dehumidifying in the cabinet as claimed in claim 5, wherein: the utility model discloses a water receiving tank, including water receiving tank (111), water conservancy diversion pole (103) are the up end and flush and lower extreme face bulge strip structure downwards with the horizontal plate, every water conservancy diversion pole (103) surface has all been paintd hydrophobic coating, preferred polytetrafluoroethylene coating, the installation of 30 jiaos is all personally submitted with the horizontal to water conservancy diversion pole (103), and the one end that heat conduction metal sheet (102) were kept away from in water conservancy diversion pole (103) all extends to the opening top of water receiving tank (111).

7. The low-voltage switch cabinet with the function of continuously dehumidifying in the cabinet as claimed in claim 1, wherein: the secondary dehumidifying component (6) comprises a mounting plate (61) and a supporting plate (62), wherein the mounting plate (61) is provided with two connecting rods and is respectively fixedly mounted on the upper portion of the left side wall and the upper portion of the right side wall of the inner cavity of the dehumidifying box (2), the two mounting plates (61) are equal in height, the middle of the upper end of the supporting plate (62) is provided with a rectangular groove, a plurality of connecting rods (63) are fixedly connected in the rectangular groove at equal intervals, the lower end of the supporting plate (62) is symmetrically and fixedly mounted with two L-shaped plates (64) at two sides of the rectangular groove, the horizontal parts of the two L-shaped plates (64) are symmetrically provided with two first screw holes (65) which are vertically penetrated, the upper ends of the two mounting plates (61) are provided with second screw holes (66) at positions corresponding to the first screw holes (65), and a limit bolt (67) is arranged in each, solid desiccant is placed at the upper end of the support plate (62), and preferably allochroic silica gel desiccant is selected as the solid desiccant.

8. The low-voltage switch cabinet with the function of continuously dehumidifying in the cabinet as claimed in claim 1, wherein: the joint of the single-door (7) and the dehumidification box (2) is provided with a sealing ring, and the middle part of the single-door (7) is provided with an observation window.

9. The low-voltage switch cabinet with the function of continuously dehumidifying in the cabinet as claimed in claim 5, wherein: the semiconductor refrigerating sheet (101) and the axial flow fan (4) are both electrically connected with a control box (9), a programming controller is arranged in the control box (9), and a humidity sensor is arranged in the switch cabinet body (1);

the humidity sensor is provided with a highest threshold and a lowest threshold, when the humidity sensor detects that the humidity in the switch cabinet body (1) is higher than the highest threshold, the axial flow fan (4) and the semiconductor refrigerating piece (101) are started to work through a programming controller in the control box (9), and when the humidity sensor detects that the humidity in the switch cabinet body (1) is lower than the lowest threshold, the axial flow fan (4) and the semiconductor refrigerating piece (101) are started to stop working through the programming controller in the control box (9).