Dehumidification type low-voltage switch cabinet

Abstract

The invention relates to the technical field of electrical equipment, and discloses a dehumidification type low-voltage switch cabinet which comprises a cabinet body and a cabinet door, the cabinet body is internally provided with a containing cavity used for installing electrical components, and the containing cavity is internally provided with a heating and dehumidification assembly. The heating and dehumidifying assembly comprises a heating plate capable of being electrified to heat and a temperature and humidity sensor used for monitoring the temperature and humidity in the cabinet body, and the temperature and humidity sensor is electrically connected with the heating plate through a controller. In the operation process, the temperature and humidity sensor can monitor the temperature and humidity in the cabinet body in real time, the heating plate is powered on to emit heat after the humidity exceeds a preset value, moisture in the cabinet body is removed in a heating mode, and the dehumidification effect is good.

Description

Technical Field

[0001] The present application relates to the technical field of electrical equipment, and in particular to a dehumidification type low-voltage switch cabinet. Background Art

[0002] Low-voltage switchgear is an electrical device used to control, protect and distribute electrical energy. It is widely used in power systems in power plants, petroleum, chemical, metallurgy, textile and high-rise buildings.

[0003] In a humid environment, the electrical components inside the low-voltage switchgear are easily affected by moisture, causing equipment failure or performance degradation. Therefore, humidity control is crucial to ensure the normal operation of the low-voltage switchgear.

[0004] In order to solve the problem of moisture inside the low-voltage switch cabinet, the traditional low-voltage switch cabinet has ventilation holes on the side walls of the cabinet or places desiccant inside the cabinet to remove moisture in the cabinet by ventilation or drying.

[0005] However, the above methods often have limited dehumidification effects and are unable to monitor and control the internal humidity of the cabinet in real time, which needs to be improved. Summary of the invention

[0006] In order to improve the dehumidification effect, monitor and control the internal humidity of the cabinet in real time, the present application provides a dehumidification type low-voltage switch cabinet.

[0007] The present application provides a dehumidification type low-voltage switch cabinet adopts the following technical solution: A dehumidification type low-voltage switch cabinet comprises a cabinet body and a cabinet door. The cabinet body is provided with a receiving cavity for installing electrical components. The receiving cavity is provided with a heating and dehumidification component. The heating and dehumidification component comprises a heating plate capable of generating heat when powered on, and a temperature and humidity sensor for monitoring the temperature and humidity inside the cabinet. The temperature and humidity sensor is electrically connected to the heating plate through a controller.

[0008] By adopting the above technical solution, during the operation of this application, the temperature and humidity sensor can monitor the temperature and humidity inside the cabinet in real time, and send a signal to the controller when the humidity exceeds the preset value, so that the heating plate is powered on and heated, so as to remove the moisture inside the cabinet by heating, with high dehumidification efficiency and good effect. As the heating plate continues to heat up, the temperature inside the cabinet will gradually rise. When the temperature and humidity sensor detects that the temperature exceeds the preset value, the heating plate will be powered off and stop heating under the action of the controller to prevent the electrical components in the cabinet from overheating and affecting normal operation.

[0009] Optionally, a plurality of partition plates are provided in the cabinet, and the partition plates can divide the accommodating cavity into a plurality of mutually independent installation cavities, and the heating and dehumidification component is provided in each of the installation cavities.

[0010] By adopting the above technical solution, a plurality of independent installation cavities are formed in the cabinet, and each installation cavity can be used to place different electrical components to improve the orderliness of the distribution of electrical components. In addition, each heating and dehumidification component can monitor and control the temperature and humidity of the installation cavity respectively. Compared with the method of designing only one set of heating and dehumidification components, the temperature and humidity space range that each heating and dehumidification component needs to control is small, the heating plate has a fast heating speed and high dehumidification efficiency.

[0011] Optionally, the partition plate includes a first partition plate and a second partition plate movably arranged below the first partition plate, the first partition plate is provided with a plurality of first through holes, the second partition plate is provided with second through holes which are equal in number to and correspond to the first through holes, and the cabinet body is provided with a driving component for controlling the movement of the second partition plate, and the second partition plate can be moved under the action of the driving component so that each second through hole is connected to or misaligned with the first through hole respectively.

[0012] By adopting the above technical solution, when the second partition is moved to make each second through hole connected to the first through hole, the adjacent installation cavities can be connected along the first through hole and the second through hole, so as to facilitate the flow of moisture in the adjacent installation cavities, thereby balancing the humidity and temperature of different installation cavities. When the second partition is moved to make each second through hole misaligned with the first through hole, the adjacent installation cavities are separated by the partition plate and are independent of each other. If the maximum temperature and maximum humidity in each installation cavity are set differently, each installation cavity can be maintained at a different temperature and humidity to meet different work requirements, which is highly practical.

[0013] Optionally, the driving assembly includes a driving rod, a plurality of linkage rods detachably arranged on the driving rod, and a power member for controlling the driving rod to move toward or away from the first partition. The number of the linkage rods is equal to and corresponds to the second partitions, and each linkage rod is fixedly connected to the corresponding second partition.

[0014] By adopting the above technical solution, when the power part is working, the driving rod will move toward or away from the side of the first partition, and then the linkage rod drives the second partition to move toward or away from the side of the first partition, so that each second through hole is connected or misaligned with the first through hole. The above driving method only needs to be operated once to control multiple second partitions to move synchronously to achieve the opening or disconnection of each installation cavity, with a simple structure and high driving efficiency.

[0015] In addition, since the linkage rod is detachable rather than fixedly connected to the driving rod, in actual application, the operator can also choose to connect different linkage rods to the driving rod according to needs, so as to use the driving assembly to individually control the movement of the second partition to be moved, while keeping the other second partitions stationary, thereby freely changing the movement form of the second partition.

[0016] Optionally, the driving rod is provided with a clearance hole for each linkage rod to pass through respectively, and the linkage rod is hingedly provided with a limit block on the side away from the second partition plate, the hinged end of the limit block and the linkage rod is located at an eccentric position of the linkage rod, and the limit block and the driving rod are detachably connected by fasteners; a positioning ring is fixed to the circumferential side wall of the linkage rod, and the spacing between the positioning ring and the limit block is not less than the thickness of the driving rod.

[0017] By adopting the above technical solution, when assembling the linkage rod and the driving rod, first, the limit block is turned to a state where the edge does not exceed the circumferential side wall of the linkage rod, and the above state refers to a state where the limit block does not affect the linkage rod from passing out of or into the clearance hole; then, the linkage rod is inserted into the clearance hole until the linkage rod and the positioning ring fit each other, and then the limit block is turned out of the circumferential side wall of the linkage rod, and the limit block and the driving rod are connected by fasteners, so that the linkage rod and the driving rod can be relatively fixed, and at this time, the second partition connected to the linkage rod can move synchronously with the driving rod.

[0018] When the linkage rod and the driving rod need to be separated, the fasteners need only be removed first, and then the limit block is turned to a state where the edge does not exceed the circumferential side wall of the linkage rod. When the power part is working, the driving rod can be moved out of the outside of the linkage rod, thereby achieving rapid separation of the two. The structure is simple and disassembly and assembly are convenient.

[0019] Optionally, a mounting plate is fixedly provided on one side of the temperature and humidity sensor, and a lifting assembly for driving each mounting plate to move vertically is provided on the cabinet.

[0020] By adopting the above technical solution, when the lifting assembly is working, the mounting plate will drive the temperature and humidity sensor connected thereto to move vertically, thereby expanding the sensing area of ​​the temperature and humidity sensor and improving monitoring accuracy.

[0021] Optionally, the lifting assembly includes a lifting screw and a lifting motor for controlling the forward and reverse rotation of the lifting screw, and the mounting plate is fitted with the side wall of the cabinet and is threadedly connected to the lifting screw.

[0022] By adopting the above technical solution, after starting the lifting motor, the lifting screw will rotate circumferentially, so that the mounting plate drives the temperature and humidity sensor to move vertically, so that the temperature and humidity sensor can monitor the temperature and humidity of the mounting cavity in real time at different positions. The movement of each temperature and humidity sensor is powered by the same lifting motor, which has the advantages of energy saving and environmental protection.

[0023] Optionally, a movable rod penetrating the partition plate is provided in the accommodating cavity, and dehumidification fans equal in number to and corresponding to the installation cavities are detachably provided on the movable rod, and each of the dehumidification fans is located in a different installation cavity.

[0024] By adopting the above technical solution, in addition to dehumidification by heating the heating plate, the air flow rate on both sides of the cabinet body can be accelerated by turning on the dehumidification fan, thereby further improving the dehumidification and heat dissipation effect.

[0025] Optionally, an extension plate is provided on one of the mounting plates, and a movable motor for driving the movable rod to rotate circumferentially is provided on the extension plate.

[0026] By adopting the above technical solution, when the movable motor is working, the dehumidification fan will rotate circumferentially along with the movable rod, and the wind force has a large range and good effect.

[0027] Optionally, the movable rod includes a plurality of detachably connected splicing rods, the number of the splicing rods is equal to and corresponds to the number of the dehumidification fans, and each of the dehumidification fans is detachably mounted on a different splicing rod.

[0028] By adopting the above technical solution, the movable rod is assembled from multiple spliced ​​rods. When a single dehumidification fan fails, the spliced ​​rod connected to the dehumidification fan can be removed to facilitate separate repair of the failed dehumidification fan.

[0029] In summary, the present application includes at least one of the following beneficial technical effects: 1. When the equipment is running, the temperature and humidity sensor can monitor the temperature and humidity inside the cabinet in real time, and control the heating plate to power on and heat up when the humidity exceeds the preset value, so as to remove the moisture inside the cabinet by heating, and the dehumidification effect is good; when the temperature exceeds the preset value, the heating plate will be powered off and stop heating to ensure the stable operation of the electrical components in the cabinet; 2. When the lifting assembly is working, the temperature and humidity sensor will move vertically with the mounting plate, so that the temperature and humidity sensor can monitor the temperature and humidity of the mounting cavity in real time at different positions, with high monitoring accuracy and good effect; 3. When the dehumidification fan is started, it can speed up the air flow speed on both sides of the cabinet to further improve the dehumidification and heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of Example 1.

[0031] Figure 2 It is a schematic diagram of the structure when the cabinet door is hidden in Example 1.

[0032] Figure 3 It is a structural schematic diagram of Example 2.

[0033] Figure 4 It is a structural schematic diagram of one viewing angle when the cabinet door is hidden in embodiment 2.

[0034] Figure 5It is a structural schematic diagram from another perspective when the cabinet door is hidden in Example 2.

[0035] Figure 6 It is a partial schematic diagram of Example 2, used to show the structure of the movable rod and the dehumidification fan.

[0036] Figure 7 It is an exploded schematic diagram of the partition plate and the drive assembly in Example 2.

[0037] Figure 8 It is a partial explosion diagram when the linkage rod and the driving rod are separated in Example 2.

[0038] Description of reference numerals: 1. Cabinet body; 11. Accommodating cavity; 111. Installation cavity; 12. Supporting plate; 121. Supporting groove; 2. Cabinet door; 3. Partition plate; 31. First partition plate; 311. First through hole; 32. Second partition plate; 321. Second through hole; 4. Heating plate; 5. Temperature and humidity sensor; 51. Installation plate; 6. Lifting assembly; 61. Lifting screw rod; 62. Lifting motor; 7. Extension plate; 71. Movable motor; 72. Movable rod; 721. Splicing rod; 722. Flange; 73. Bracket; 74. Dehumidification fan; 8. Driving assembly; 81. Driving rod; 811. Clearance hole; 812. Fastening screw hole; 82. Linkage rod; 821. Limit block; 822. Fastening hole; 823. Positioning ring; 83. Power part; 84. Fastener; 841. Fastening bolt. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-8 This application is described in further detail.

[0040] The embodiment of the present application discloses a dehumidification type low-voltage switch cabinet.

[0041] Example 1 Reference Figure 1 , Figure 2 The dehumidification type low-voltage switch cabinet includes a cabinet body 1 and a cabinet door 2 hingedly arranged on one side of the cabinet body 1. The cabinet body 1 is provided with a receiving cavity 11 for installing electrical components. The receiving cavity 11 is designed to be open on one side of the cabinet door 2, and the electrical components can be placed in the receiving cavity 11 along the above opening.

[0042] Reference Figure 1 , Figure 2, a plurality of partition plates 3 are spaced apart in the vertical direction in the cabinet body 1, and the partition plates 3 are fixed between the two opposite side walls of the accommodating cavity 11, so that the accommodating cavity 11 can be divided into a plurality of mutually independent installation cavities 111. Specifically, in this embodiment, two partition plates 3 are provided to illustrate its structure, so that the accommodating cavity 11 can be divided into three installation cavities 111. Correspondingly, three cabinet doors 2 are also provided, and each cabinet door 2 is respectively provided at the opening of a different installation cavity 111, so as to open and close a different installation cavity 111 respectively.

[0043] Reference Figure 2 In order to improve the problem of heavy humidity in the cabinet 1, a heating and dehumidifying component is provided in the accommodating cavity 11. In this embodiment, a heating and dehumidifying component is provided in each installation cavity 111. In other embodiments, a heating and dehumidifying component can also be provided in a single or multiple installation cavities 111 according to needs.

[0044] Reference Figure 2 The heating and dehumidification assembly includes a heating plate 4 that can generate heat when powered on, and a temperature and humidity sensor 5 for monitoring the temperature and humidity inside the cabinet 1. The temperature and humidity sensor 5 is electrically connected to the heating plate 4 through a controller (not shown in the figure). A mounting plate 51 is fixed to the side of the temperature and humidity sensor 5 away from the heating plate 4, and the mounting plate 51 and the heating plate 4 are arranged opposite to each other. In this embodiment, the mounting plate 51 and the heating plate 4 are both fixedly connected to the inner wall of the cabinet 1, and the above-mentioned fixing method is preferably welding; in other embodiments, the mounting plate 51 and the heating plate 4 can also be connected to the cabinet 1 by means of clamping and bolting, and any method that can achieve relative fixation of the two is acceptable.

[0045] The implementation principle of a dehumidification type low-voltage switch cabinet in the embodiment of the present application is as follows: when the equipment is running, the temperature and humidity sensor 5 can monitor the temperature and humidity inside the cabinet 1 in real time. When the humidity inside the cabinet 1 exceeds the preset value, the temperature and humidity sensor 5 will send a signal to the controller, so that the controller controls the heating plate 4 to be powered on and heated, so as to remove moisture in the cabinet 1 by heating. As the heating plate 4 heats up, the temperature in the cabinet 1 will also become higher and higher. When the temperature and humidity sensor 5 detects that the temperature exceeds the preset value, the controller will control the heating plate 4 to be powered off and stop heating, so as to prevent the electrical components in the cabinet 1 from being affected by overheating.

[0046] It should be noted that the above-mentioned preset values ​​refer to the maximum humidity value and maximum temperature value pre-set by the operator to the temperature and humidity sensor 5 before the equipment is operated. The preset values ​​can be adjusted according to actual conditions and are not limited to a fixed value.

[0047] Example 2 Reference Figure 3 , Figure 4The difference between this embodiment and embodiment 1 is that a lifting assembly 6 is provided on the cabinet 1 for driving each mounting plate 51 to move vertically. The lifting assembly 6 includes a lifting screw 61 located in the accommodating cavity 11, and a lifting motor 62 whose output shaft is fixedly connected to the lifting screw 61. The body of the lifting motor 62 is located on the outside of the cabinet 1, and the output shaft passes through the top plate of the cabinet 1 and is connected to the lifting screw 61. The lifting motor 62 is preferably a servo motor whose output shaft can rotate forward and reversely, and each mounting plate 51 is threadedly connected to the lifting screw 61.

[0048] Reference Figure 4 , Figure 5 In order to prevent the mounting plate 51 from rotating with the lifting screw 61, the mounting plate 51 in this embodiment should be in contact with the side wall of the cabinet 1. In other embodiments, a guide structure such as a slider slot can be further provided, or a guide rod penetrating the mounting plate 51 can be provided in the cabinet 1. Any structure that can prevent the mounting plate 51 from rotating can be used. When the lifting motor 62 is working, the lifting screw 61 will rotate with the output shaft of the lifting motor 62, so that the mounting plate 51 drives the temperature and humidity sensor 5 to move vertically, thereby increasing the monitoring area of ​​the temperature and humidity sensor 5 and improving the monitoring effect.

[0049] Reference Figure 4 , Figure 6 , an extension plate 7 is fixed on one of the mounting plates 51, and the extension plate 7 is preferably fixed on the mounting plate 51 located at the uppermost side. A movable motor 71 is arranged on the extension plate 7, and the body of the movable motor 71 is mounted on the upper side of the extension plate 7, and a movable rod 72 is fixed to the output shaft through the extension plate 7, and the movable rod 72 extends vertically and passes through each partition plate 3.

[0050] Reference Figure 6 The movable rod 72 includes a plurality of detachably connected splicing rods 721, the number of the splicing rods 721 is equal to and corresponds to the number of the installation cavities 111, and flanges 722 are fixed to the ends of adjacent splicing rods 721 close to each other, and bolt and nut structures are arranged between adjacent flanges 722 to achieve detachable connection of each splicing rod 721. Since the above-mentioned bolt and nut structure belongs to the prior art, it is not described in detail in this application.

[0051] Reference Figure 4 , Figure 6, each splicing rod 721 is detachably connected to a dehumidification fan 74 through a bracket 73, and the dehumidification fan 74 is fixedly mounted on the bracket 73, and the bracket 73 and the splicing rod 721 are preferably bolted. When the movable motor 71 is working, the movable rod 72 will drive the dehumidification fan 74 to rotate circumferentially to increase the wind force range of the dehumidification fan 74, thereby further accelerating the flow speed of the air on both sides of the cabinet 1, and the dehumidification and heat dissipation effect is good. It should be noted that in order to allow the air on both sides of the cabinet 1 to be conducted, ventilation holes should be opened on the side walls of the cabinet 1 (not shown in the figure).

[0052] Reference Figure 5 , Figure 7 The partition plate 3 includes a first partition plate 31 and a second partition plate 32 movably arranged below the first partition plate 31. The first partition plate 31 is provided with a plurality of first through holes 311 at intervals, and the second partition plate 32 is provided with a plurality of second through holes 321 at intervals. The number of the second through holes 321 is equal to and corresponds to the number of the first through holes 311.

[0053] Reference Figure 5 , Figure 7 The cabinet 1 is provided with a driving assembly 8 for controlling the horizontal movement of the second partition 32. The driving assembly 8 includes a driving rod 81 located outside the cabinet 1, a plurality of linkage rods 82 detachably arranged on the driving rod 81, and a power member 83 for controlling the horizontal movement of the driving rod 81. The power member 83 is preferably a power cylinder whose cylinder is fixedly mounted on the outer wall of the cabinet 1 and whose piston rod is horizontally arranged and fixedly connected to the driving rod 81. When the piston rod of the power cylinder is extended or retracted, the driving rod 81 will move toward or away from the side of the first partition 31.

[0054] Reference Figure 7 , Figure 8 , the number of linkage rods 82 and second partitions 32 is equal and one-to-one corresponding, and each linkage rod 82 is fixedly connected to the corresponding second partition 32. When the linkage rod 82 is connected to the driving rod 81, the linkage rod 82 will drive the second partition 32 to move horizontally, so that the second partition 32 moves to make each second through hole 321 connected or misaligned with the first through hole 311. When the second through hole 321 is connected with the first through hole 311, the adjacent installation cavities 111 will be mutually conductive, and moisture can flow along the first through hole 311 and the second through hole 321; when the second through hole 321 is misaligned with the first through hole 311, the adjacent installation cavities 111 will be separated by the partition plate 3. When in use, the preset value of the temperature and humidity sensor 5 can be changed to keep each installation cavity 111 at a different temperature or humidity, thereby adapting to the working requirements of different electrical components.

[0055] Reference Figure 8The driving rod 81 is provided with equal and one-to-one corresponding clearance holes 811 as the number of the linkage rods 82. The inner diameter of the clearance hole 811 is slightly larger than the diameter of the linkage rod 82, so that the linkage rod 82 can be inserted into the clearance hole 811. The side of the linkage rod 82 away from the second partition plate 32 is hinged with a limit block 821. The hinged end of the limit block 821 and the linkage rod 82 is located at an eccentric position of the linkage rod 82, so that the limit block 821 can be rotated to a state where the edge does not exceed the circumferential side wall of the linkage rod 82, which will not affect the insertion of the linkage rod 82 and the clearance hole 811; it can also be rotated to a state where the edge exceeds the circumferential side wall of the linkage rod 82, so that the limit block 821 can be connected to the driving rod 81 through the fastener 84 later.

[0056] Reference Figure 8 Specifically, the fastener 84 is preferably a fastening bolt 841, the limit block 821 is provided with a fastening hole 822 for the fastening bolt 841 to pass through, and the driving rod 81 is provided with a fastening screw hole 812 threadedly matched with the fastening bolt 841. In order to improve the connection strength between the linkage rod 82 and the driving rod 81, in this embodiment, the limit blocks 821 are preferably two, and correspondingly, two sets of fasteners 84 are also provided.

[0057] Reference Figure 8 A positioning ring 823 is fixed to the circumferential side wall of the linkage rod 82. The distance between the positioning ring 823 and the limit block 821 is not less than the thickness of the driving rod 81. The above distance refers to the distance from the positioning ring 823 to the hinged end of the limit block 821 and the linkage rod 82. When the driving rod 81 is inserted into the outside of the linkage rod 82, the positioning ring 823 can limit the driving rod 81, so as to facilitate the subsequent alignment of the fastening hole 822 on the limit block 821 and the fastening screw hole 812 on the driving rod 81. And when the driving rod 81 is subjected to a force to move toward the side close to the first partition plate 31, the driving rod 81 will exert force on the positioning ring 823, so that the positioning ring 823 drives the linkage rod 82 and the second partition plate 32 to move.

[0058] Reference Figure 5 In order to improve the stability of the second partition 32, a supporting plate 12 is fixed on the inner wall of the cabinet 1 away from the linkage rod 82. In this embodiment, the supporting plate 12 is L-shaped and has a supporting groove 121 with an opening on one side. The end of the second partition 32 away from the linkage rod 82 is slidably set in the supporting groove 121.

[0059] The implementation principle of a dehumidification type low-voltage switch cabinet in the embodiment of the present application is as follows: when the lifting motor 62 is working, the lifting screw 61 will rotate forward and reverse, so that the mounting plate 51 drives the temperature and humidity sensor 5 to move vertically, so that the temperature and humidity sensor 5 is not only monitored at a fixed position, but also has a large monitoring range and high accuracy. In addition to dehumidification by heating, the dehumidification fan 74 can also be turned on to increase the air flow speed inside and outside the cabinet 1, thereby performing dehumidification by blowing and ventilation and heat dissipation, with high dehumidification efficiency and good effect.

[0060] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A dehumidification type low-voltage switch cabinet, comprising a cabinet body (1) and a cabinet door (2), wherein the cabinet body (1) is provided with a receiving cavity (11) for installing electrical components, characterized in that: A heating and dehumidification component is arranged in the accommodating cavity (11), and the heating and dehumidification component comprises a heating plate (4) capable of generating heat when powered on, and a temperature and humidity sensor (5) for monitoring the temperature and humidity inside the cabinet (1); the temperature and humidity sensor (5) is electrically connected to the heating plate (4) via a controller.

2. The dehumidification type low-voltage switch cabinet according to claim 1 is characterized in that: A plurality of partition plates (3) are arranged in the cabinet (1), and the partition plates (3) can divide the accommodating chamber (11) into a plurality of mutually independent installation chambers (111), and each installation chamber (111) is provided with the heating and dehumidifying component.

3. The dehumidification type low voltage switch cabinet according to claim 2 is characterized in that: The partition plate (3) comprises a first partition plate (31) and a second partition plate (32) movably arranged below the first partition plate (31); the first partition plate (31) is provided with a plurality of first through holes (311); the second partition plate (32) is provided with second through holes (321) which are equal in number to and correspond to the first through holes (311); the cabinet body (1) is provided with a driving component (8) for controlling the movement of the second partition plate (32); the second partition plate (32) can be moved under the action of the driving component (8) so that each second through hole (321) is connected to or misaligned with the first through hole (311).

4. The dehumidification type low voltage switch cabinet according to claim 3 is characterized in that: The driving assembly (8) comprises a driving rod (81), a plurality of linkage rods (82) detachably arranged on the driving rod (81), and a power member (83) for controlling the driving rod (81) to move toward or away from the first partition (31), wherein the number of the linkage rods (82) is equal to and corresponds to the number of the second partitions (32), and each linkage rod (82) is fixedly connected to the corresponding second partition (32).

5. The dehumidification type low voltage switch cabinet according to claim 4 is characterized in that: The driving rod (81) is provided with a clearance hole (811) for each linkage rod (82) to pass through respectively. A limit block (821) is hingedly connected to one side of the linkage rod (82) away from the second partition plate (32). The hinged end of the limit block (821) and the linkage rod (82) is located at an eccentric position of the linkage rod (82), and the limit block (821) and the driving rod (81) are detachably connected via a fastener (84). A positioning ring (823) is fixed to the circumferential side wall of the linkage rod (82), and the spacing between the positioning ring (823) and the limit block (821) is not less than the thickness of the driving rod (81).

6. The dehumidification type low voltage switch cabinet according to claim 2 is characterized in that: A mounting plate (51) is fixedly provided on one side of the temperature and humidity sensor (5), and a lifting assembly (6) for driving each mounting plate (51) to move vertically is provided on the cabinet (1).

7. The dehumidification type low voltage switch cabinet according to claim 6 is characterized in that: The lifting assembly (6) comprises a lifting screw (61) and a lifting motor (62) for controlling the forward and reverse rotation of the lifting screw (61); the mounting plate (51) is in contact with the side wall of the cabinet (1) and is threadedly connected to the lifting screw (61).

8. The dehumidification type low voltage switch cabinet according to claim 7 is characterized in that: The accommodating chamber (11) is provided with a movable rod (72) penetrating the partition plate (3); the movable rod (72) is detachably provided with dehumidification fans (74) equal in number to and corresponding to the installation chambers (111); and each of the dehumidification fans (74) is located in a different installation chamber (111).

9. The dehumidification type low voltage switch cabinet according to claim 8, characterized in that: An extension plate (7) is arranged on one of the mounting plates (51), and a movable motor (71) for driving a movable rod (72) to rotate in a circumferential direction is arranged on the extension plate (7).

10. The dehumidification type low voltage switch cabinet according to claim 8, characterized in that: The movable rod (72) comprises a plurality of detachably connected splicing rods (721), the number of the splicing rods (721) and the number of the dehumidification fans (74) being equal and corresponding one to one, and each of the dehumidification fans (74) being detachably mounted on a different splicing rod (721).

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