Modularized quick-spliced intelligent low-voltage cabinet for mine removal and transportation

Abstract

The application relates to the technical field of mining electrical equipment, and discloses a modularized quick-spliced intelligent mining low-voltage cabinet of a moving and transporting type, which comprises a cabinet body, a controller is installed on one side of the cabinet body, a frame assembly is installed in the cavity in the middle of the cabinet body, a plurality of drawers are inserted into the frame assembly, air permeation assemblies are arranged on the two sides of the frame assembly, desiccant housings are inserted on one side of the two air permeation assemblies, an air internal circulation mechanism is arranged in the cavity at the bottom of the cabinet body, the air internal circulation mechanism is linked with the air permeation assemblies, controllable heating regeneration of the desiccant is realized, the desiccant does not need to be frequently replaced by opening the cabinet, the probability of external gas entering the cabinet body is effectively reduced, the service life of the desiccant is prolonged, meanwhile, the closed internal circulation is formed by the axial flow fan, the U-shaped pipe and the condensation assembly, the air in the cabinet is prevented from leaking out while being dehumidified and cooled, and the explosion-proof safety of the mining low-voltage cabinet is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of mining electrical equipment technology, specifically a modular, quick-assembly, mobile intelligent low-voltage switchgear for mining. Background Technology

[0002] In patent application CN109672109A, a distribution cabinet body is included. The body has several sets of drawer switch slots, with the drawer switches slidably installed within these slots. A busbar compartment and an outgoing branch compartment are located at the rear of the slots. Each slot in the busbar compartment has an incoming line connector, and a vertically arranged busbar is fixed by a busbar clamp. Each outgoing branch compartment has an outgoing line connector for each outgoing line. Positioning blocks are connected to both sides of the incoming line connectors. A positioning shaft passes through a positioning shaft hole in the center of the positioning block from top to bottom. The protrusion height of the positioning block is greater than the longitudinal length of the busbar. Insulating protective glass plates are separable between the two sides of the positioning blocks. The advantages are: compared to traditional low-voltage drawer cabinets, it facilitates maintenance personnel in troubleshooting primary and secondary components, significantly improving user safety, and is particularly suitable for the needs of power supply companies and other power transmission and distribution companies.

[0003] Mining low-voltage switchgear operates in the underground environment of coal mines for extended periods. The relative humidity of the air underground is typically above 80%, and in some areas it is even close to saturation. When humid air enters the switchgear, condensation forms on the surface of electrical components, leading to decreased insulation performance, shortened creepage distance, and a higher risk of electrical faults such as short circuits and leakage. At the same time, moisture accelerates the corrosion of metal parts, causing oxidation and rust at critical contact points such as terminals and contacts, increasing contact resistance, and exacerbating heat generation. In severe cases, this can lead to electrical fires. Furthermore, moisture can cause electronic components inside the drawers to become damp and malfunction, affecting the control accuracy and operational reliability of the low-voltage switchgear. Therefore, effective dehumidification of the switchgear's interior is a necessary measure to ensure the safe and stable operation of mining low-voltage switchgear.

[0004] In existing technologies, including the aforementioned patents, the desiccant in low-pressure cabinets is typically used for single-use or periodically replaced. In the high-humidity environment of underground coal mines, the desiccant easily becomes saturated with moisture, requiring frequent cabinet opening and replacement. Each opening directly connects the cabinet's interior to the external environment, increasing the risk of external combustible gases such as methane entering the cabinet. Furthermore, frequent desiccant replacement not only involves significant maintenance work but also results in rapid desiccant consumption and high operating costs, making desiccant recycling impossible. Moreover, most existing low-pressure cabinets typically employ an open ventilation design for their dehumidification and heat dissipation systems, relying on fans... This open ventilation method, which involves drawing outside air into the cabinet for cooling and dehumidification and then expelling the hot air outside, can achieve cooling and dehumidification. However, in the underground coal mine environment, the fan may draw in methane-containing gases from outside into the cabinet. If electrical components inside the cabinet generate sparks, it could easily trigger a methane explosion. In most existing low-voltage cabinets, the dehumidification and heat dissipation functions are often independent and lack effective linkage control. Desiccant dehumidification and fan heat dissipation operate independently and cannot work together according to changes in temperature and humidity inside the cabinet, resulting in high energy consumption and difficulty in achieving efficient dehumidification and heat dissipation while ensuring explosion-proof safety.

[0005] To address the aforementioned issues, innovative design based on existing methods is urgently needed. Summary of the Invention

[0006] The problems to be solved by this invention are: the desiccant in existing mining low-pressure cabinets is easily saturated in the high humidity environment underground and needs to be frequently opened for replacement; open ventilation and heat dissipation pose a risk of gas inhalation; and the energy consumption is high when the dehumidification and heat dissipation functions operate independently.

[0007] To solve the above-mentioned technical problems, the technical solution of the present invention is: a modular and quick-assembly mobile intelligent low-pressure switchgear for mining, including a cabinet body, a controller installed on one side of the cabinet body, a frame assembly installed in the cavity in the middle of the cabinet body, multiple drawers inserted into the frame assembly, ventilation components provided on both sides of the frame assembly, a desiccant shell inserted into one side of each of the two ventilation components, and an air internal circulation mechanism provided in the cavity at the bottom of the cabinet body; The internal air circulation mechanism includes an axial flow fan, a U-shaped pipe, and a delivery pipe. The air inlet of the axial flow fan is fixedly connected to an air intake box. The two sides of the air intake box are respectively connected to an air intake pipe. The other end of the air intake pipe is fixedly connected to a U-shaped pipe. The U-shaped pipe is located between the ventilation component and the frame component. The top of the U-shaped pipe is fixedly connected to the inner top wall of the cabinet. One side of the U-shaped pipe is connected to multiple horn-shaped air inlets. The air outlet of the axial flow fan is connected to the air chamber at the bottom of the cabinet. The air chamber is connected to the two sides by a delivery pipe with a manual valve. The other end of the delivery pipe is connected to the bottom of the desiccant housing through a connecting box. The top of the cabinet has a groove at the desiccant housing. The groove is connected to the cavity in the middle of the cabinet through a condensation component.

[0008] Preferably, the ventilation assembly includes two ventilation plates and a threaded rod driven by a motor. The top and bottom of the two ventilation plates are fixedly connected to the inner top wall and inner bottom wall of the cabinet, respectively. A baffle is movably connected between the two ventilation plates. The top of the threaded rod is threaded through the middle of the baffle and rotatably connected to the inner top wall of the cabinet.

[0009] Preferably, the baffle is slidably disposed between the two ventilated plates. The baffle moves up and down under the drive of the threaded rod. When the baffle moves upward, it exposes the ventilated pores of the ventilated plates to facilitate the passage of moisture. When the baffle moves downward, it closes the ventilated pores of the ventilated plates, so that both sides of the desiccant shell are sealed.

[0010] Preferably, the condensation assembly includes a condenser tube and a liquid outlet tube. The bottom of the condenser tube is connected to the top of the liquid outlet tube. The condenser tube and the liquid outlet tube are fixedly connected to the outer wall of the cabinet. One end of the condenser tube is connected to the groove through a steam inlet tube, and the other end of the condenser tube is connected to the cavity in the middle of the cabinet through a steam outlet tube.

[0011] Preferably, a gear one is fixedly provided on the outer surface of the bottom of the threaded rod, and a gear two is fixedly connected to the handle end of the manual valve, with the gear one and gear two meshing together.

[0012] Preferably, a heat dissipation plate is inserted into the rear side wall of the cabinet, and a heat dissipation fin is installed on one side of the condenser pipe.

[0013] Preferably, the bottom wall of the cabinet at the bottom of the desiccant housing has a hole, the bottom of the hole is fixedly connected to the connecting box by bolts, and the bottom of the connecting box is connected to the top of the delivery pipe.

[0014] Preferably, the frame assembly includes four vertically arranged fixed columns, which are distributed in a rectangular array. The top and bottom of the four fixed columns are fixedly connected to the top and bottom of the cabinet interior wall, respectively. Multiple layers of fixed base plates are fixedly connected to the middle of the fixed columns along the vertical direction, and the fixed base plates are used to support the drawers.

[0015] Preferably, a door panel one is fixedly connected to one side of the cavity at the bottom of the cabinet, and a door panel two is fixedly connected to both sides of the cavity in the middle of the cabinet, with the door panel two fitting against the drawer near the drawer.

[0016] Preferably, one end of the liquid outlet pipe is equipped with a solenoid valve, and the liquid outlet pipe, motor and axial flow fan are all electrically connected to the controller.

[0017] Compared with the prior art, the technical solution of the present invention has the following advantages: (1) This invention achieves controllable heating and regeneration of the desiccant by setting up an internal air circulation mechanism and a ventilating component in conjunction, eliminating the need for frequent opening of the cabinet to replace the desiccant, effectively reducing the probability of external gas entering the cabinet and increasing the service life of the desiccant. At the same time, a closed internal circulation is formed by an axial flow fan, a U-shaped pipe and a condensation component, which prevents air leakage from the cabinet while dehumidifying and cooling, significantly improving the explosion-proof safety of the mining low-pressure cabinet. When the desiccant in the desiccant shell is saturated, the controller starts the motor, drives the threaded rod to move the baffle downward, and closes the ventilating holes of the ventilating plate, so that the desiccant shell... The two sides of the body are isolated from the cavity in the middle of the cabinet, forming a sealed regeneration chamber. At the same time, gear one at the bottom of the threaded rod automatically opens the manual valve through gear two, and the axial flow fan starts, drawing in the heat and humid air generated by the electronic components in the drawer. The air enters from the bottom of the desiccant shell through the air chamber, delivery pipe, and connecting box to heat and regenerate the desiccant. After regeneration, the system automatically resets, and the desiccant regains its adsorption capacity. This design allows the desiccant to be recycled hundreds of times without frequent replacement. At the same time, the entire regeneration process does not require opening the cabinet door, avoiding the risk of external gas entering due to opening the cabinet, which meets the explosion-proof requirements of underground coal mines. (2) The axial flow fan draws in the heat and humid air generated by the electronic components in the drawer through multiple horn-shaped air inlets on both sides of the U-shaped tube. The air is then sent to the desiccant shell for dehumidification through the air intake box, axial flow fan, air chamber, and delivery pipe. The dehumidified hot air is then cooled down by the condenser tube. The dried low-temperature air returns to the cavity in the middle of the cabinet through the air outlet pipe, forming a complete closed internal circulation. During the entire circulation process, the cabinet remains sealed, and the air circulates only inside the cabinet, completely isolated from the external environment. This not only effectively reduces the temperature and humidity inside the cabinet and ensures the normal operation environment of the electronic components, but more importantly, it prevents the leakage of air from the cabinet and the entry of external gas, fundamentally eliminating the hidden danger of gas ignition by electrical sparks and meeting the strict requirements for the explosion-proof performance of electrical equipment in underground coal mines. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall front structure of the present invention; Figure 2 This is a structural diagram of the fixed base plate and drawer of the present invention; Figure 3 This is a schematic diagram of the front view of the internal structure of the cabinet of the present invention; Figure 4 This is a schematic diagram of the overall rear structure of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 This is a schematic diagram of the cross-sectional structure of the cabinet of the present invention; Figure 7 This is a schematic cross-sectional view of the condenser assembly of the present invention; Figure 8 This is a schematic diagram of the air recirculation mechanism of the present invention; Figure 9 This is a schematic diagram of the structure of gear one and gear two of the present invention; Figure 10 This is a schematic diagram of the axial flow fan and conveying pipe of the present invention; Figure 11 This is an exploded structural diagram of the breathable component of the present invention; Figure 12 This is a cross-sectional structural diagram of the connecting box and the desiccant housing of the present invention; Figure 13 This is a schematic diagram of the air cavity structure of the present invention.

[0019] In the diagram: 1. Cabinet; 101. Door Panel 1; 102. Door Panel 2; 2. Controller; 3. Fixing Post; 301. Fixing Base Plate; 302. Drawer; 4. Heat Dissipation Plate; 5. Condenser Pipe; 501. Liquid Outlet Pipe; 502. Steam Inlet Pipe; 503. Gas Outlet Pipe; 6. Desiccant Housing; 601. Connecting Box; 602. Delivery Pipe; 603. Manual Valve; 604. Air Chamber; 7. Motor; 701. Threaded Rod; 702. Baffle; 8. Ventilation Plate; 9. Axial Flow Fan; 901. Suction Box; 902. Inlet Pipe 1; 903. U-shaped Pipe; 904. Horn-shaped Air Inlet; 1001. Gear 1; 1002. Gear 2. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0021] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "comprising" or "including," and similar terms used in this disclosure, mean that an element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0022] like Figures 1 to 13 As shown, the present invention provides a modular, quick-assembly, mobile intelligent low-pressure switchgear for mining, comprising a cabinet 1. A controller 2 is installed on one side of the cabinet 1 to receive instructions and coordinate the actions of various actuators. A frame assembly is installed in the cavity in the middle of the cabinet 1. Multiple drawers 302 are inserted into the frame assembly, and electronic components are installed in the drawers 302. Ventilation components are provided on both sides of the frame assembly. A desiccant shell 6 is inserted into one side of each of the two ventilation components. The desiccant shell 6 is a rectangular hollow box structure made of a breathable metal mesh plate or perforated plate. Multiple evenly distributed ventilation holes are provided on its side walls and top to facilitate air passage. The interior of the desiccant shell 6 is filled with a desiccant (such as silica gel desiccant, molecular sieve, or calcium chloride desiccant) to absorb moisture inside the cabinet 1. An internal air circulation mechanism is provided in the cavity at the bottom of the cabinet 1 to realize the circulation of air inside the cabinet 1 and to heat and regenerate the desiccant. The internal air circulation mechanism includes an axial flow fan 9, a U-shaped pipe 903, and a delivery pipe 602. The air inlet of the axial flow fan 9 is fixedly connected to an air intake box 901. The two sides of the air intake box 901 are respectively connected to an air intake pipe 902. The other end of the air intake pipe 902 is fixedly connected to a U-shaped pipe 903. The U-shaped pipe 903 is located between the ventilation component and the frame component. The top of the U-shaped pipe 903 is fixedly connected to the inner top wall of the cabinet 1. One side of the U-shaped pipe 903 is connected to multiple horn-shaped air inlets 904. The horn-shaped air inlets 904 face the drawer 302 to facilitate the intake of heat and humid air generated by electronic components in the drawer 302. The air outlet of the axial flow fan 9 is inserted into the air chamber 604 at the bottom of the cabinet 1. The air chamber 604 is connected to the two sides by a delivery pipe 602 with a manual valve 603. The other end of the delivery pipe 602 is connected to the bottom of the desiccant housing 6 through a connecting box 601. The top of the cabinet 1 has a groove at the desiccant housing 6. The groove is connected to the cavity in the middle of the cabinet 1 through a condensation component.

[0023] In one embodiment of the present invention, the ventilated assembly includes two ventilated plates 8 and a threaded rod 701 driven by a motor 7. The top and bottom of the two ventilated plates 8 are fixedly connected to the inner top wall and inner bottom wall of the cabinet 1, respectively. A baffle 702 is movably connected between the two ventilated plates 8. The top of the threaded rod 701 is threaded through the middle of the baffle 702 and rotatably connected to the inner top wall of the cabinet 1. The baffle 702 is slidably disposed between the two ventilated plates 8. The baffle 702 moves up and down under the drive of the threaded rod 701. When the baffle 702 moves upward, it exposes the ventilated pores of the ventilated plates 8 to facilitate the passage of moisture. When the baffle 702 moves downward, it closes the ventilated pores of the ventilated plates 8, so that both sides of the desiccant housing 6 are closed.

[0024] In one embodiment of the present invention, the condensation assembly includes a condenser pipe 5 and a liquid outlet pipe 501. The bottom of the condenser pipe 5 is connected to the top of the liquid outlet pipe 501. The condenser pipe 5 and the liquid outlet pipe 501 are fixedly connected to the outer wall of the cabinet 1. One end of the condenser pipe 5 is connected to the groove through the steam inlet pipe 502, and the other end of the condenser pipe 5 is connected to the cavity in the middle of the cabinet 1 through the air outlet pipe 503. The condenser pipe 5 is used to condense water vapor in the humid air into liquid water. The dried air returns to the interior of the cabinet 1 through the air outlet pipe 503.

[0025] In one embodiment of the present invention, a gear 1001 is fixedly provided on the outer surface of the bottom of the threaded rod 701, and a gear 2 1002 is fixedly connected to the handle end of the manual valve 603. The gear 1001 and the gear 2 1002 are meshed together. When the motor 7 drives the threaded rod 701 to rotate, the gear 1001 rotates synchronously, driving the gear 2 1002 to rotate, thereby automatically opening or closing the manual valve 603.

[0026] In one embodiment of the present invention, a heat dissipation plate 4 is inserted into the rear side wall of the cabinet 1 to dissipate the heat inside the cabinet 1, and a heat dissipation fin is installed on one side of the condenser pipe 5 to improve the heat dissipation efficiency of the condenser pipe 5 and accelerate the condensation of water vapor.

[0027] In one embodiment of the present invention, the bottom wall of the cabinet 1 at the bottom of the desiccant housing 6 is provided with a hole, the bottom of the hole is fixedly connected to the connecting box 601 by bolts, and the bottom of the connecting box 601 is connected to the top of the conveying pipe 602, so that hot air can enter from the bottom of the desiccant housing 6 to heat and regenerate the desiccant.

[0028] In one embodiment of the present invention, the frame assembly includes four vertically arranged fixed columns 3, which are distributed in a rectangular array. The top and bottom of the four fixed columns 3 are fixedly connected to the top and bottom of the inner top wall of the cabinet 1, respectively. A multi-layer fixed base plate 301 is fixedly connected to the middle of the fixed column 3 along the vertical direction. The fixed base plate 301 is used to support the drawer 302, forming a modular drawer structure.

[0029] As one embodiment of the present invention, a door panel 101 is fixedly connected to one side of the cavity at the bottom of the cabinet 1 to close the cavity. A second door panel 102 is fixedly connected to both sides of the cavity in the middle of the cabinet 1. The second door panel 102 is close to the drawer 302 and fits against the drawer 302 to close the cabinet 1 and prevent external flammable gases such as gas from entering the interior of the cabinet 1.

[0030] In one embodiment of the present invention, a solenoid valve is provided at one end of the liquid outlet pipe 501. The liquid outlet pipe 501 and the motor 7 are both electrically connected to the controller 2. The controller 2 can automatically control the start and stop of the dehumidification and regeneration process.

[0031] The working principle and usage process of this invention: Under normal use, the baffle 702 is located above the ventilated plate 8, exposing the ventilated holes of the ventilated plate 8. The humid air inside the cabinet 1 can enter the area where the desiccant housing 6 is located through the ventilated holes of the ventilated plate 8, and the moisture is absorbed by the desiccant in the desiccant housing 6, keeping the air inside the cabinet 1 dry. The manual valve 603 is in the closed state, and the axial flow fan 9 is in the standby state. Desiccant heating regeneration process: When the desiccant in the desiccant shell 6 is saturated with adsorption and needs to be regenerated by heating, the operator starts the regeneration program through the controller 2. The controller 2 first starts the motor 7 on the side that needs to be regenerated. The motor 7 drives the threaded rod 701 to rotate. The threaded rod 701 drives the baffle 702 to move downward until the baffle 702 completely seals the air vents of the vent plate 8, so that the two sides of the desiccant shell 6 are isolated from the cavity in the middle of the cabinet 1, forming a sealed regeneration chamber. Meanwhile, gear 1001 at the bottom of threaded rod 701 rotates synchronously with threaded rod 701. Gear 1001 drives gear 2 1002, which meshes with it, to rotate. Gear 2 1002 drives the handle of manual valve 603 to rotate, opening manual valve 603 and connecting delivery pipe 602 to air chamber 604. Controller 2 starts axial flow fan 9. Axial flow fan 9 draws air from U-shaped pipe 903 through suction box 901 and air inlet pipe 1 902. U-shaped pipe 903, through multiple horn-shaped air inlets 904, removes heat and moisture generated by electronic components in drawer 302. Air is drawn in, and hot, humid air passes sequentially through the horn-shaped air inlet 904, U-shaped pipe 903, air inlet pipe 1 902, air intake box 901, and axial flow fan 9, entering the air chamber 604 at the bottom of the cabinet 1. The hot, humid air enters the delivery pipe 602 from the air chamber 604 through the opened manual valve 603, and then enters the desiccant housing 6 from the bottom through the connecting box 601. The hot air heats the desiccant, causing the moisture adsorbed in the desiccant to evaporate, forming high-temperature and high-humidity air. At the same time, the hot air also carries away the heat generated during the desiccant regeneration process. High-temperature and high-humidity air enters the condenser tube 5 through the inlet pipe 502 from the groove at the top of the desiccant shell 6. The condenser tube 5 dissipates heat and cools down through the heat dissipation fins and the heat dissipation plate 4 on the rear side wall of the cabinet 1. The high-temperature and high-humidity air is cooled in the condenser tube 5, and the water vapor condenses into liquid water, which flows into the liquid outlet pipe 501 along the inner wall of the condenser tube 5. The dried low-temperature air returns to the cavity in the middle of the cabinet 1 through the exhaust pipe 503, completing a complete internal circulation regeneration process. When a certain amount of condensate accumulates in the liquid outlet pipe 501, the controller 2 controls the solenoid valve at the end of the liquid outlet pipe 501 to open, and discharges the condensate to the outside of the cabinet 1. After the drainage is completed, the controller 2 closes the solenoid valve to prevent external gas from entering the inside of the cabinet 1. After the desiccant regeneration is complete, the controller 2 shuts off the axial fan 9, and then controls the motor 7 to rotate in the opposite direction, driving the threaded rod 701 to move the baffle 702 upward, exposing the air vents of the vent plate 8, so that the two sides of the desiccant housing 6 are reconnected to the cavity in the middle of the cabinet 1. At the same time, gear 1001 and gear 2 1002 rotate in the opposite direction, driving the manual valve 603 to close, cutting off the connection between the delivery pipe 602 and the air chamber 604, and the entire system returns to normal dehumidification state. Throughout the entire dehumidification and regeneration process of this invention, the cabinet 1 remains closed, eliminating the need to open the cabinet door. This effectively reduces the probability of external combustible gases such as methane entering the cabinet 1. During regeneration, all electrical components (motor 7, axial fan 9, solenoid valve, etc.) are located within the enclosed cavity of the cabinet 1, and the cabinet 1 has excellent sealing performance, meeting the explosion-proof requirements for underground coal mine equipment. Furthermore, the desiccant is regenerated using a hot air circulation method, eliminating the need for open flames or high-temperature heating elements, further enhancing safety. The venting components on both sides and the desiccant housing 6 are symmetrically arranged, allowing for single-sided or alternating regeneration as needed, achieving uninterrupted dehumidification. The desiccant housing 6 can be quickly plugged in and replaced; when the desiccant reaches the end of its service life, the entire desiccant housing 6 can be directly replaced, facilitating maintenance.

[0032] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A modular, rapidly assembled, mobile intelligent low-voltage switchgear for mining, comprising a cabinet (1), characterized in that: A controller (2) is installed on one side of the cabinet (1). A frame assembly is installed in the cavity in the middle of the cabinet (1). Multiple drawers (302) are inserted into the frame assembly. Ventilation components are provided on both sides of the frame assembly. A desiccant shell (6) is inserted into one side of each of the two ventilation components. An air circulation mechanism is provided in the cavity at the bottom of the cabinet (1). The air circulation mechanism includes an axial flow fan (9), a U-shaped pipe (903), and a delivery pipe (602). The air inlet of the axial flow fan (9) is fixedly connected to an air intake box (901). The two sides of the air intake box (901) are respectively connected to an air intake pipe (902). The other end of the air intake pipe (902) is fixedly connected to a U-shaped pipe (903). The U-shaped pipe (903) is located between the ventilation component and the frame component. The top of the U-shaped pipe (903) is fixedly connected to the inner top wall of the cabinet (1). One side of the U-shaped pipe (903) is connected to multiple horn-shaped air inlets (904). The outlet of the axial flow fan (9) is connected to the air chamber (604) at the bottom of the cabinet (1). The air chamber (604) is connected to the two sides by a delivery pipe (602) with a manual valve (603). The other end of the delivery pipe (602) is connected to the bottom of the desiccant housing (6) through a connecting box (601). The top of the cabinet (1) has a groove at the desiccant housing (6). The groove is connected to the cavity in the middle of the cabinet (1) through a condensation component.

2. The modular, rapidly assembled, mobile intelligent low-voltage switchgear for mining as described in claim 1, characterized in that: The ventilation assembly includes two ventilation plates (8) and a threaded rod (701) driven by a motor (7). The top and bottom of the two ventilation plates (8) are fixedly connected to the inner top wall and inner bottom wall of the cabinet (1), respectively. A baffle (702) is movably connected between the two ventilation plates (8). The top thread of the threaded rod (701) passes through the middle of the baffle (702) and is rotatably connected to the inner top wall of the cabinet (1).

3. A modular, rapidly assembled, mobile intelligent low-voltage switchgear for mining as described in claim 2, characterized in that: The baffle (702) is slidably disposed between the two ventilated plates (8). The baffle (702) moves up and down under the drive of the threaded rod (701). When the baffle (702) moves upward, the ventilated pores of the ventilated plate (8) are exposed, which facilitates the passage of moisture. When the baffle (702) moves downward, the ventilated pores of the ventilated plate (8) are closed, so that both sides of the desiccant shell (6) are closed.

4. A modular, rapidly assembled, mobile intelligent low-voltage switchgear for mining as described in claim 1, characterized in that: The condensation assembly includes a condenser tube (5) and a liquid outlet tube (501). The bottom of the condenser tube (5) is connected to the top of the liquid outlet tube (501). The condenser tube (5) and the liquid outlet tube (501) are fixedly connected to the outer wall of the cabinet (1). One end of the condenser tube (5) is connected to the groove through the steam inlet tube (502), and the other end of the condenser tube (5) is connected to the cavity in the middle of the cabinet (1) through the steam outlet tube (503).

5. A modular, rapidly assembled, mobile intelligent low-voltage switchgear for mining as described in claim 2, characterized in that: Gear 1 (1001) is fixedly provided on the outer surface of the bottom of the threaded rod (701), and gear 2 (1002) is fixedly connected to the handle end of the manual valve (603). Gear 1 (1001) and gear 2 (1002) are meshed together.

6. A modular, rapidly assembled, mobile intelligent low-voltage switchgear for mining as described in claim 4, characterized in that: A heat dissipation plate (4) is inserted into the rear wall of the cabinet (1), and a heat dissipation fin is installed on one side of the condenser pipe (5).

7. A modular, rapidly assembled, mobile intelligent low-voltage switchgear for mining as described in claim 1, characterized in that: The bottom wall of the cabinet (1) at the bottom of the desiccant housing (6) has a hole, and the bottom of the hole is fixedly connected to the connecting box (601) by bolts. The bottom of the connecting box (601) is connected to the top of the conveying pipe (602).

8. A modular, rapidly assembled, mobile intelligent low-voltage switchgear for mining as described in claim 1, characterized in that: The frame assembly includes four vertically arranged fixed columns (3), which are arranged in a rectangular array. The top and bottom of the four fixed columns (3) are fixedly connected to the top and bottom of the inner top wall of the cabinet (1), respectively. A multi-layer fixed base plate (301) is fixedly connected to the middle of the fixed column (3) along the vertical direction. The fixed base plate (301) is used to support the drawer (302).

9. A modular, rapidly assembled, mobile intelligent low-voltage switchgear for mining as described in claim 1, characterized in that: A door panel (101) is fixedly connected to one side of the cavity at the bottom of the cabinet (1), and a door panel (102) is fixedly connected to both sides of the cavity in the middle of the cabinet (1). The door panel (102) is close to the drawer (302) and fits against the drawer (302).

10. A modular, rapidly assembled, mobile intelligent low-voltage switchgear for mining as described in claim 4, characterized in that: An electromagnetic valve is provided at one end of the liquid outlet pipe (501), and the liquid outlet pipe (501), the motor (7) and the axial flow fan (9) are all electrically connected to the controller (2).

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