A high-voltage switchgear for a coal mine power supply system

Abstract

The present invention relates to the technical field of power distribution cabinets, and particularly relates to a high-voltage power distribution cabinet for a coal mine shaft power supply system, including: a cabinet body, one side of the cabinet body is communicated with an air outlet, and a fixed box is fixedly installed on the upper end surface of the cabinet body; a conveying component, the conveying component includes a filter bag arranged in the fixed box, the filter bag is driven to rotate, a dust filtering layer is fixedly installed on the outer wall of the filter bag, a moisture-absorbing sponge is fixedly installed inside the filter bag, and a detection plate is fixedly installed at the middle dividing line position on one side of the filter bag at the bottom end inside the fixed box. Through the multi-stage filtering and dynamic dust removal design, the present invention effectively solves the problem of the erosion of power supply equipment by dust and moisture in the mine environment. The rotating filter bag combined with the dust filtering layer and the moisture-absorbing sponge can continuously separate dust in the air and adsorb moisture, and cooperate with the linkage of the dust suction fan and the heating element to realize automatic dust cleaning and efficient moisture drying.

Description

Technical Field

[0001] The present invention relates to the technical field of distribution cabinets, and particularly relates to a high-voltage distribution cabinet for a coal mine shaft power supply system. Background Art

[0002] As a core device of the high-voltage power system, the high-voltage distribution cabinet undertakes the key functions of power distribution, circuit control, and system protection. By integrating components such as circuit breakers, disconnectors, and relay protection devices, it realizes the reception and distribution of high-voltage power and has multiple protection mechanisms such as overload protection, short-circuit instantaneous tripping, and ground fault isolation. It is an important infrastructure to ensure the safe and stable operation of the power grid.

[0003] Under the special working conditions of the coal mine shaft power supply system, the high-voltage distribution cabinet faces multiple severe challenges. The high concentration of coal dust and rock powder in the mine environment will continuously impact the equipment. The traditional static filtering device uses a fixed filter screen structure, and dust is likely to form a dense blocking layer on the surface of the filter screen, resulting in a significant reduction in ventilation efficiency. This will not only cause abnormal temperature rise inside the cabinet, accelerate the aging of insulating materials, but also shorten the service life of components. At the same time, due to the too high frequency of filter screen blockage, it is often necessary to stop the machine frequently for manual cleaning or filter element replacement, significantly increasing the maintenance cost and workload.

[0004] In addition, the mine environment is in a high-humidity state for a long time, and moisture is easy to penetrate into the cabinet through weak parts of the cabinet seal, resulting in a decrease in the surface resistance value of insulating parts, which may cause leakage or short-circuit faults. Metal parts are continuously oxidized and corroded in the humid environment, which not only affects the electrical conductivity but also weakens the mechanical structure strength, significantly reducing the overall reliability of the equipment compared to the ground environment and posing a serious threat to the continuous power supply in the mine. Summary of the Invention

[0005] Aiming at the above-mentioned shortcomings of the prior art, the present invention provides a high-voltage distribution cabinet for a coal mine shaft power supply system, which can effectively solve the problem of frequent manual cleaning in the prior art using static filtration.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0007] The present invention provides a high-voltage distribution cabinet for a coal mine shaft power supply system, including:

[0008] A cabinet body, one side of the cabinet body is communicated with an air outlet, and a fixed box is fixedly installed on the upper end surface of the cabinet body;

[0009] Transfer component, the transfer component includes a filter bag arranged in a fixed box, the filter bag is driven to rotate, a dust filter layer is fixedly installed on the outer wall of the filter bag, a moisture-absorbing sponge is fixedly installed inside the filter bag, a detection plate is fixedly installed at the bottom end inside the fixed box and at the midline position on one side of the filter bag, two slots are opened in the detection plate, a lifting plate is elastically slidably installed in the slot, a displacement monitoring element is arranged above the lifting plate, and the displacement monitoring element is electrically connected to a controller;

[0010] Air inlet component, used to draw in external air into the fixed box for dust removal and dehumidification;

[0011] Dust removal and dehumidification component, used to clean the dust filtered by the filter bag and the dust filter layer, and dry the moisture filtered in the moisture-absorbing sponge;

[0012] Moisture absorption component, used to absorb and remove the moisture dried in the moisture-absorbing sponge.

[0013] Preferably, two pairs of support frames are symmetrically installed at the bottom end inside the fixed box, a fixed disk is fixedly installed at the opposite ends of the support frames, a rotating gear is rotatably installed on the fixed disk, two toothed belts are symmetrically installed on the inner wall of the filter bag, the toothed belts are engaged with the rotating gear, a rotary drive member is fixedly installed on one side of the fixed disk, the output end of the rotary drive member penetrates through the fixed disk and is fixedly connected to the rotating gear, and the rotating gears are connected by belt drive.

[0014] Preferably, sliding rails are fixedly installed on both sides of the toothed belt, sliding rods are fixedly installed in the slots, the lifting plate is slidably connected to the sliding rods, the lifting plate is slidably connected to the sliding rails, a spring is fixedly installed between the lifting plate and the slot, the displacement monitoring element is fixedly connected to the top end inside the slot, the detection end of the displacement monitoring element is fixedly connected to the lifting plate, and the displacement monitoring element is electrically connected to the controller.

[0015] Preferably, an air inlet barrel is embedded on the upper end surface of the fixed box, fixed covers are symmetrically installed on the outer wall of the air inlet barrel, an irradiation lamp and a light source detection element are respectively fixedly installed in the fixed covers, the light source detection element is electrically connected to the controller, a connecting cover is communicated with the lower end surface of the air inlet barrel, the connecting cover is in contact connection with the outer wall of the filter bag, an air inlet pipe is embedded at the bottom end inside the fixed box, an exhaust fan is fixedly installed in the air inlet pipe, a contact cover is communicated with the upper end surface of the exhaust fan, and the contact cover is in contact connection with the inner wall of the filter bag at the position corresponding to the connecting cover.

[0016] Preferably, an air outlet pipe is embedded in the upper end face of the fixed box. A dust suction fan is connected to the air outlet pipe. The dust suction fan is electrically connected to the controller. A fixing plate is fixedly installed at the lower end of the dust suction fan. Two magnets are symmetrically installed on the lower end face of the fixing plate. A dust suction hood is fixedly installed on the lower end face of the fixing plate and between the magnets. The dust suction hood is in contact connection with the outer wall of the filter bag. A partition is arranged inside the filter bag at a position corresponding to the magnets. The partition is magnetically attracted and matched with the magnets.

[0017] Preferably, connecting frames are fixedly installed on both sides of the dust suction hood. A heating element is fixedly installed on the upper end face of the connecting frame.

[0018] Preferably, two fixing frames are symmetrically installed on the upper end face of the fixed box. A moisture absorber is fixedly installed between the fixing frames. The moisture absorber is electrically connected to the controller. A plurality of communicating pipes are connected to the lower end face of the moisture absorber. The lower ends of the communicating pipes penetrate through the fixed box and are connected to contact heads. The contact heads are in contact connection with the outer wall of the filter bag. Air inlet pipes are connected to both sides of the contact heads. A delivery pipe is connected to one side of the moisture absorber.

[0019] Preferably, support plates are fixedly and symmetrically installed at the inner bottom end of the fixed box. A rolling wheel is rotatably installed between the support plates. The rolling wheel is in pressing contact connection with the filter bag. The rolling wheel is in belt transmission connection with a rotating gear.

[0020] Preferably, a cooling assembly is further included. The cooling assembly includes a fixed box fixedly installed at the top end inside the cabinet. The fixed box is filled with cooling water. A ventilation copper pipe is arranged inside the fixed box. An air inlet is fixedly installed on one side of the fixed box. One end of the air inlet penetrates through the fixed box and is connected to the ventilation copper pipe. An air outlet is opened on the other side of the fixed box. The ventilation copper pipe is connected to the air outlet. A circulation pipe is connected to one side of the fixed box. The circulation pipe penetrates through the cabinet and extends to the outside. A cooling device is fixedly installed inside the circulation pipe. The cooling device is composed of cooling fins and a circulation water pump. The cooling device is connected to the delivery pipe. A liquid isolation valve is embedded in the inner wall of the delivery pipe. A drain port is connected to the lower end face of the cooling device. A pressure relief valve is fixedly installed on the inner wall of the drain port.

[0021] Preferably, it further includes a dehumidification component. The dehumidification component includes a reflux box fixedly installed at the bottom end inside the fixed box and below the filter bag. The reflux box is composed of a long box and a square box communicated with one side. One side of the long box is communicated with a flow pipe, and the flow pipe is communicated with the conveying pipe. A first solenoid valve is embedded in the inner wall of the square box. The upper end surface of the square box is in contact connection with the filter bag. A drying port is opened on the upper end surface of the square box. One side of the long box is communicated with an exhaust pipe. A second solenoid valve is fixedly installed in the inner wall of the exhaust pipe. The first solenoid valve and the second solenoid valve are electrically connected to the controller. A U-shaped elbow is fixedly installed in the flow pipe. An opening valve is embedded at a position close to the lower part of the outer wall of the U-shaped elbow. A water-absorbing cotton is fixedly installed in the inner wall of the U-shaped elbow.

[0022] The technical solution provided by the present invention has the following beneficial effects compared with the known prior art:

[0023] First, through the multi-stage filtration and dynamic dust removal design, the problem of the erosion of dust and moisture in the mine environment on the power supply equipment is effectively solved. The rotating filter bag combines the dust filter layer and the moisture-absorbing sponge, which can continuously separate the dust in the air and adsorb moisture. Cooperating with the linkage of the dust suction fan and the heating element, automatic dust cleaning and efficient moisture drying are realized. At the same time, the built-in light source detection and displacement monitoring system can adjust the working parameters in real time according to the dust concentration and the weight of the filter bag, ensuring the accuracy and stability of dust removal and dehumidification. This design greatly reduces the risks of short circuit and aging of the equipment caused by dust accumulation and moisture, and significantly improves the durability of the power distribution cabinet in harsh environments.

[0024] Second, the temperature control and circulating cooling technology is adopted. The processed air is cooled by the ventilation copper pipe and the cooling device to prevent high-temperature air from entering the cabinet and affecting the performance of electrical components. The rolling wheel squeezes the filter bag, making the moisture gather below the contact head of the moisture absorber, improving the moisture absorption efficiency and ensuring that the residual moisture in the filter bag is completely removed. In addition, through the intelligent control of the solenoid valve and the reflux box, the system can reuse the drying waste heat, improve the energy utilization rate, ensure the stable operation of the power supply system in high-temperature and high-humid mine environments, and also reduce the manual maintenance cost through automatic regulation, providing reliable technical support for the safe power supply of coal mines. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0027] Figure 2 It is a schematic structural diagram inside the present invention;

[0028] Figure 3 It is a schematic structural diagram inside the fixed box of the present invention;

[0029] Figure 4 It is a schematic structural diagram of the conveying component of the present invention;

[0030] Figure 5 It is a schematic cross-sectional structural diagram of the filter bag of the present invention;

[0031] Figure 6 It is a schematic structural diagram of the detection board of the present invention;

[0032] Figure 7 It is a schematic structural diagram of the air inlet component of the present invention;

[0033] Figure 8 It is a schematic structural diagram of the moisture absorption component of the present invention;

[0034] Figure 9 It is a schematic cross-sectional structural diagram of the moisture absorption component of the present invention;

[0035] Figure 10 It is a schematic structural diagram of the dehumidification component of the present invention.

[0036] Reference numerals: 1, cabinet body; 101, air outlet; 2, fixed box; 3, conveying component; 301, filter bag; 302, dust filter layer; 303, moisture absorption sponge; 304, toothed belt; 305, support frame; 306, fixed disk; 307, rotary drive member; 308, rotating tooth; 309, sliding rail; 310, detection board; 311, notch; 312, sliding rod; 313, lifting plate; 314, spring; 315, displacement monitoring element; 4, air inlet component; 401, air inlet barrel; 402, fixed cover; 403, irradiation lamp; 404, light source detection element; 405, connecting cover; 406, air inlet pipe; 407, exhaust fan; 408, contact cover; 5, dust removal and dehumidification component; 501, air outlet pipe; 502, dust suction fan; 503, fixing plate; 504, magnet; 505, dust suction cover; 506, partition board; 507, connecting frame; 508, heating element; 6, moisture absorption component; 601, fixing frame; 602, moisture absorption machine; 603, communicating pipe; 604, contact head; 605, air inlet pipe; 606, conveying pipe; 607, support plate; 608, rolling wheel; 7, cooling component; 701, fixed box; 702, air inlet; 703, circulation pipe; 704, cooling device; 705, drain outlet; 8, dehumidification component; 801, flow pipe; 802, return box; 803, first solenoid valve; 804, exhaust pipe; 805, U-shaped elbow; 806, opening valve. Detailed implementation mode

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0038] The present invention will be further described below in conjunction with embodiments.

[0039] Embodiment: Refer to Figures 1 to 10 , a high-voltage power distribution cabinet for a coal mine shaft power supply system, including:

[0040] Cabinet body 1, an air outlet 101 is communicated on one side of the cabinet body 1, and a fixed box 2 is fixedly installed on the upper end surface of the cabinet body 1;

[0041] Transfer component 3, the transfer component 3 includes a filter bag 301 arranged in the fixed box 2, the filter bag 301 is driven to rotate, a dust filter layer 302 is fixedly installed on the outer wall of the filter bag 301, a moisture-absorbing sponge 303 is fixedly installed inside the filter bag 301, and the moisture-absorbing sponge 303 is made of an existing silica gel material and can quickly absorb and store liquid (moisture). At the bottom end of the fixed box 2 and at the midline position on one side of the filter bag 301, a detection board 310 is fixedly installed. Two notches 311 are opened in the detection board 310, and a lifting board 313 is elastically slidably installed in the notches 311. Above the lifting board 313 is a displacement monitoring component 315. The displacement monitoring component 315 is an existing device and can be used with an inductive displacement sensor. When the iron core of the inductive displacement sensor is at the center, the induced voltages of the two receiving coils are equal and the signal is zero; when the iron core deviates, the signals of the two receiving coils are no longer symmetrical, and a voltage signal proportional to the displacement is obtained through differential processing. The displacement monitoring component 315 is electrically connected to a controller;

[0042] Air inlet component 4, used to draw outside air into the fixed box 2 for dust removal and dehumidification;

[0043] Dust removal and dehumidification component 5, used to clean the dust filtered by the filter bag 301 and the dust filter layer 302, and dry the moisture filtered in the moisture-absorbing sponge 303;

[0044] Moisture absorption component 6, used to absorb and remove the dried moisture in the moisture-absorbing sponge 303.

[0045] It should be noted that the moisture-absorbing sponge 303 is made of silica gel, has a certain heat resistance, can withstand a certain temperature, and after absorbing a certain amount of moisture, through the continuous rotation of the filter bag 301, the moisture inside is dried by the dust removal and dehumidification component 5, and then the moisture is removed by the moisture absorption component 6 to ensure that moisture absorption can be carried out again after circulation.

[0046] Refer to Figures 4 to 6 , two pairs of support frames 305 are symmetrically installed at the inner bottom end of the fixed box 2. A fixed disk 306 is fixedly installed at the opposite ends of the support frames 305. A rotating gear 308 is rotatably installed on the fixed disk 306. Two toothed belts 304 are symmetrically installed on the inner wall of the filter bag 301. The toothed belt 304 meshes with the rotating gear 308. A rotary drive member 307 is fixedly installed on one side of the fixed disk 306. The rotary drive member 307 uses an existing motor. The output end of the rotary drive member 307 passes through the fixed disk 306 and is fixedly connected to the rotating gear 308. The rotating gears 308 are connected by a belt drive. Slide rails 309 are fixedly installed on both sides of the toothed belt 304. The slide rails 309 are made of rubber material and are internally provided with T-shaped grooves to limit the lifting plate 313. A slide rod 312 is fixedly installed in the notch 311. The lifting plate 313 is slidably connected to the slide rod 312. The lifting plate 313 is slidably connected to the slide rail 309. A spring 314 is fixedly installed between the lifting plate 313 and the notch 311. The displacement monitoring element 315 (the displacement monitoring element 315 detects the displacement of the lifting plate 313 (accuracy ±0.1 mm), and in real time feeds back the weight change of the filter bag 301 to the controller, and dynamically adjusts the power of the dehumidifier 602. See Figure 6 ) is fixedly connected to the inner top end of the notch 311. The detection end of the displacement monitoring element 315 is fixedly connected to the lifting plate 313. The displacement monitoring element 315 is electrically connected to the controller. There are two upper and lower lifting plates 313. The upper lifting plate 313 is slidably connected to one side of the toothed belt 304 and the filter bag 301 after filtering moisture through the slide rail 309. The lower lifting plate 313 is slidably connected to one side of the toothed belt 304 and the filter bag 301 after drying and removing moisture through the slide rail 309, so as to detect the weight of the filter bag 301 respectively.

[0047] Refer to Figure 7, the upper end face of the fixed box 2 is embedded with an air inlet barrel 401. Symmetrically mounted on the outer wall of the air inlet barrel 401 are fixed covers 402. Inside the fixed covers 402 are respectively fixedly installed an irradiation lamp 403 and a light source detection element 404. The light source detection element 404 is an existing device that uses a photosensitive resistor and is an element whose electrical signal changes with the light intensity. The light source detection element 404 is electrically connected to the controller. The lower end face of the air inlet barrel 401 communicates with a connection cover 405. The connection cover 405 is in contact connection with the outer wall of the filter bag 301. The inner bottom end of the fixed box 2 is embedded with an air inlet pipe 406. Inside the air inlet pipe 406 is fixedly installed an exhaust fan 407. The exhaust fan 407 is an existing device, a device used for gas or air circulation, ventilation, and exhaust. During the operation of the exhaust fan 407, the suction generated causes the outside air to enter the interior of the air inlet barrel 401, and makes the air pass through the filter bag 301 and enter the contact cover 408 and the air inlet pipe 406. The filter bag 301 filters out the dust and moisture in the air. The upper end face of the exhaust fan 407 communicates with a contact cover 408. The contact cover 408 is in contact connection with the inner wall of the filter bag 301 at a position corresponding to the connection cover 405.

[0048] Refer to Figures 8 to 9, the upper end face of the fixed box 2 is embedded with an air outlet pipe 501, and a dust suction fan 502 is connected to the air outlet pipe 501. The dust suction fan 502 is an existing device and is a device used to suck dust, dust and impurities. The dust suction fan 502 is electrically connected to the controller. The lower end of the dust suction fan 502 is fixedly installed with a fixing plate 503. Two magnets 504 are symmetrically installed on the lower end face of the fixing plate 503. A dust suction hood 505 is fixedly installed between the magnets 504 on the lower end face of the fixing plate 503. The dust suction hood 505 is in contact connection with the outer wall of the filter bag 301. A partition plate 506 is arranged inside the filter bag 301 at the position corresponding to the magnet 504. The partition plate 506 is magnetically attracted and matched with the magnet 504. Through the magnetic attraction between the partition plate 506 and the magnet 504, the partition plate 506 and the magnet 504 will clamp the filter bag 301 and the dust filtering layer 302 in the middle (the partition plate 506 is made of a magnetically conductive material, and the magnet 504 is a permanent magnet. The magnetic attraction range between the two is 5-10N, which not only ensures the clamping stability but also avoids the deformation of the filter bag caused by excessive extrusion. When the dust suction fan 502 is started, the clamping action of the partition plate 506 and the magnet 504 forms a local seal, so that the dust suction hood 505 only extracts the dust attached to the outer wall of the filter bag, and the area where the moisture-absorbing sponge 303 is located is not affected due to the partition). In this way, when the dust suction fan 502 works, the air in the moisture-absorbing sponge 303 will not be sucked out, and the dust removal of the filter bag 301 and the dust filtering layer 302 will be more efficient. Arc chamfers are arranged at both ends of the partition plate 506. During the rotation of the filter bag 301, the arc chamfers will be in sliding connection with the moisture-absorbing sponge 303 and will not generate resistance. Connecting frames 507 are fixedly installed on both sides of the dust suction hood 505. A heating element 508 is fixedly installed on the upper end face of the connecting frame 507. The heating element 508 is an existing device and is used with a metal heating element. The resistance wire is wrapped by a metal box, and the heat is quickly transferred by using the heat conduction performance of the metal. The heating temperature is preferably set at 100°C, which can effectively dry the moisture in the filter bag 301.

[0049] Refer to Figure 8, two fixing brackets 601 are symmetrically installed on the upper end face of the fixing box 2, and a dehumidifier 602 is fixedly installed between the fixing brackets 601. The dehumidifier 602 is an existing device. By creating a space with a pressure lower than the surrounding environment inside, the air and moisture in the filter bag 301 and the moisture-absorbing sponge 303 are attracted into the device. The establishment of negative pressure allows the air and moisture to quickly enter and be effectively removed. During the process of sucking the air and moisture in the filter bag 301 and the moisture-absorbing sponge 303, since the filter bag 301 and the moisture-absorbing sponge 303 have just been heated by the heating element 508, the air will also be heated and sucked by the dehumidifier 602. The dehumidifier 602 is electrically connected to the controller. A plurality of connecting pipes 603 are connected to the lower end face of the dehumidifier 602. The lower ends of the connecting pipes 603 penetrate through the fixing box 2 and are connected to contact heads 604. The contact heads 604 are in contact connection with the outer wall of the filter bag 301. Air inlet pipes 605 are connected to both sides of the contact heads 604. A conveying pipe 606 is connected to one side of the dehumidifier 602. Support plates 607 are fixedly and symmetrically installed at the inner bottom end of the fixing box 2. A rolling wheel 608 is rotatably installed between the support plates 607. The rolling wheel 608 is in pressing contact connection with the filter bag 301. The rolling wheel 608 is belt-driven by a rotating gear 308.

[0050] Refer to Figure 10 , further comprising a cooling assembly 7. The cooling assembly 7 includes a fixing box 701 fixedly installed at the inner top end of the cabinet 1. The fixing box 701 is filled with cooling water. A ventilation copper pipe is arranged in the fixing box 701. An air inlet 702 is fixedly installed on one side of the fixing box 701. One end of the air inlet 702 penetrates through the fixing box 701 and is communicated with the ventilation copper pipe. An air outlet is opened on the other side of the fixing box 701. The ventilation copper pipe is communicated with the air outlet. A circulation pipe 703 is connected to one side of the fixing box 701. The circulation pipe 703 penetrates through the cabinet 1 and extends to the outside. A cooling device 704 is fixedly installed in the circulation pipe 703. The cooling device 704 is composed of cooling fins and a circulation water pump. The cooling fins and the circulation water pump are existing devices. This is an existing and mature technology and will not be elaborated too much here. The cooling device 704 is communicated with the conveying pipe 606. A liquid isolation valve is embedded in the inner wall of the conveying pipe 606. The liquid isolation valve is an existing device. The liquid isolation valve adopts a hydrophobic film layer and gravity diversion design, and only allows gas to pass through. The liquid water is intercepted and enters the cooling device 704. A drain port 705 is communicated with the lower end face of the cooling device 704. A pressure relief valve is fixedly installed on the inner wall of the drain port 705. The pressure relief valve is a valve used to control and protect the fluid system. Its main function is to automatically open when the pressure in the system exceeds the set safety threshold to release the excess pressure;

[0051] After the circulating water pump is started, the cooling water flows from the fixed box 701 through the circulation pipe 703 to the cooling device 704. The cooling fins reduce the water temperature to below 25°C, and the low-temperature water flows back to the fixed box 701 to cool the ventilation copper pipe. The treated dry air (humidity < 30%) enters the cabinet 1 through the air outlet to ensure that the operating temperature of the electrical components is stable within 40°C (see Figures 9 - 10 ).

[0052] Referring to Figure 10 , it further includes a dehumidification component 8. The dehumidification component 8 includes a return box 802 fixedly installed at the bottom end inside the fixed box 2 and below the filter bag 301. The return box 802 is composed of a long box and a square box connected to one side. One side of the long box is connected with a flow pipe 801, and the flow pipe 801 is connected with the delivery pipe 606. A first solenoid valve 803 is embedded in the inner wall of the square box. The upper end surface of the square box is in contact connection with the filter bag 301, and a drying port is opened on the upper end surface of the square box. One side of the long box is connected with an exhaust pipe 804. A second solenoid valve is fixedly installed on the inner wall of the exhaust pipe 804. The first solenoid valve 803 and the second solenoid valve are electrically connected to the controller. The first solenoid valve 803 and the second solenoid valve are existing devices. When an electric current passes through the electromagnetic coil, the generated magnetic field causes the valve core to move, controlling the opening and closing state of the valve port, thereby realizing the flow or stop of the fluid. A U-shaped bend 805 is fixedly installed in the flow pipe 801. An opening valve 806 is embedded at a position near the lower part of the outer wall of the U-shaped bend 805. A water-absorbing cotton is fixedly installed on the inner wall of the U-shaped bend 805. The water-absorbing cotton is embedded in the U-shaped bend 805 to intercept the residual water in the flow pipe 801 and is regularly cleaned through the opening valve 806 (see Figure 10 ).

[0053] The working principle of the present invention is as follows:

[0054] By starting the rotary drive 307, the rotating gear 308 is driven to rotate. The rotating gear 308 meshes with the toothed belt 304, driving the filter bag 301 to rotate in a cycle within the fixed box 2 (the rotation speed is preferably set to one circle in 5 - 7 minutes). The inner and outer walls of the filter bag 301 are composed of fiberglass (fiberglass has heat resistance and can withstand high temperatures of 250°C to 300°C), and the surface is relatively smooth. Both sides are made of rubber material. External air can enter the filter bag 301 from the outer wall and flow out from the inner wall. By turning on the exhaust fan 407 for ventilation, external air will enter the connecting cover 405 through the air inlet barrel 401, and enter the filter bag 301 through the connecting cover 405. Then, it enters the contact cover 408 and the air inlet pipe 406 through the filter bag 301. During the process of external air entering the filter bag 301, dust in the air will be filtered by the filter bag 301 and the dust filter layer 302, and the dust will remain on the outer wall of the filter bag 301. The provided moisture-absorbing sponge 303 will filter out the moisture in the air. The filtered air will enter the air inlet pipe 406 through the contact cover 408, and then enter the air inlet 702 and the ventilation copper pipe through the air inlet pipe 406. The ventilation copper pipe is arranged in the fixed box 701. By turning on the circulating water pump, the cooling water circulates in the fixed box 701, the circulating pipe 703 and the cooling device 704. The provided cooling fins are used to cool down the cooling water, and then the cooling water cools down the air flowing in the ventilation copper pipe (the environmental humidity and temperature in the mine are relatively high, and directly discharging the air in the mine into the cabinet 1 cannot reduce the temperature in the cabinet 1). After cooling, the air is discharged into the cabinet 1 through the air outlet to cool down the electrical components in the cabinet 1. Therefore, after the external air is drawn into the fixed box 2 through the air inlet assembly 4, it successively passes through the dust filter layer 302 of the dynamic rotary filter bag 301 to intercept dust, the moisture-absorbing sponge 303 to adsorb moisture, and then the cooling device 704 to circulate and cool the air. Finally, a clean air flow that is dust-free, dry, and low-temperature enters the interior of the cabinet 1. This process completely eliminates the harm of the harsh environment to the electrical components through the following mechanisms:

[0055] Dust control: The dust filter layer 302 is linked with the dust suction fan 502 to continuously remove the dust accumulated on the surface of the filter bag in real time, preventing dust from penetrating into the cabinet 1 and causing component short circuits or poor contacts;

[0056] Humidity suppression: The moisture-absorbing sponge 303 combines the drying and suction of the moisture absorber 602 to reduce the air humidity below the safety threshold, preventing metal components from corroding or insulating materials from being damaged due to moisture absorption;

[0057] Temperature regulation: The ventilation copper pipe and the circulating cooling water cool the processed air for the second time to ensure that the temperature of the air flow entering the cabinet 1 is lower than 40°C, directly solving the problem of equipment overheating caused by the high-temperature environment in the mine;

[0058] During the process of the filter bag 301 filtering dust and moisture in the external air, as the filter bag 301 continuously rotates, the filter bag 301 will drive the dust and moisture filtered on the outer surface and inside to move. The installed heating element 508 will heat the filter bag 301 to evaporate the moisture in the moisture-absorbing sponge 303. By turning on the moisture-absorbing machine 602 to suck air, and contacting the outer wall of the filter bag 301 through the contact head 604, the dried moisture in the filter bag 301 will enter the moisture-absorbing machine 602 along with the air through the contact head 604 and the connecting pipe 603 and then be discharged through the conveying pipe 606. It should be noted that during the process of the heating element 508 drying the moisture in the filter bag 301, the dried moisture may flow into the fixed box 2 through the polyester filter bags provided on the inner and outer walls of the filter bag 301. And during the process of the contact head 604 sucking air from the filter bag 301, the installed air inlet pipe 605 will also extract the water vapor in the fixed box 2. It should also be noted that during the process of the moisture-absorbing machine 602 and the dust-absorbing fan 502 performing moisture absorption and dust collection, the installed rolling wheel 608 is rotationally driven by a belt and a rotating gear 308 to rotate and squeeze the filter bag 301. The filter bag 301 at the squeezed part will cause the moisture to accumulate in the filter bag 301 and above the rolling wheel 608 to facilitate the moisture-absorbing machine 602 to suck out the moisture;

[0059] When the dust filtered on the outer surface of the filter bag 301 moves to the position of the fixed plate 503, the magnet 504 will magnetically attract the partition plate 506 to clamp the filter bag 301 with dust on the outer surface and the dust filtering layer 302 between the partition plate 506 and the magnet 504. By turning on the dust suction fan 502 for air extraction, the suction force generated by the dust suction fan 502 will suck out the dust on the outer surface of the filter bag 301 and inside the dust filtering layer 302 into the air outlet pipe 501 for discharge. It should be noted that during the process of external air entering the air inlet barrel 401, the provided irradiation lamp 403 is turned on to emit irradiation light that penetrates the air inlet barrel 401, and the provided light source detection component 404 will receive the light that penetrates into the air inlet barrel 401. When there is a large amount of dust in the air, the dust will affect the light irradiated by the irradiation lamp 403, and the light received by the light source detection component 404 will be affected and generate corresponding electrical signals. The controller then controls the voltage input to the dust suction fan 502 through the generated electrical signals. When the dust is relatively large and the light received by the light source detection component 404 is affected and generates a weak electrical signal that exceeds the set threshold, the controller controls the voltage input to the dust suction fan 502 to increase. When the dust is relatively small and the light received by the light source detection component 404 is affected and generates a strong electrical signal, the controller controls the voltage input to the dust suction fan 502 to decrease. In this way, by detecting the dust content of the air entering the air inlet barrel 401, the voltage of the dust suction fan 502 is adjusted to control the dust suction fan 502 to suck out the dust on the outer surface of the filter bag 301 and inside the dust filtering layer 302 at different powers, reducing unnecessary energy consumption. This on-demand adjustment mechanism not only saves energy but also reduces mechanical wear, significantly extending the service life of the dust suction fan 502 and the filter bag 301. The fine regulation of the voltage avoids extreme situations of too strong or insufficient suction (resulting in dust residue);

[0060] The air with moisture and drying temperature entering the conveying pipe 606 will enter the cooling device 704. The liquid isolation valve provided in the cooling device 704 will isolate the air, allowing the moisture to enter the cooling device 704 for cooling circulation (a U-shaped bend 805 is provided in the flow pipe 801, which can effectively filter the moisture in the air entering the flow pipe 801), thereby cooling the ventilation copper pipe of the fixed box 701. The isolated air will enter the inside of the return box 802 through the flow pipe 801 and be discharged to the outside through the exhaust pipe 804. When the moisture content entering the fixed box 701 is relatively high, through the setting of the pressure relief valve, the excess cooling water can be discharged to the outside through the drain port 705;

[0061] It should be emphasized that during the process of the filter bag 301 filtering moisture and dust in the air and rotating, the filtered part of the filter bag 301 will rotate synchronously with the toothed belt 304. During the rotation of the toothed belt 304 for filtering, it will drive the sliding rail 309 to be slidably connected with the lifting plate 313. When the moisture content in the filtered air is relatively high, the filter bag 301 will increase in weight. The lifting plate 313 is arranged on one side of the filter bag 301 and at the midline of the filter bag 301. After the filter bag 301 increases in weight due to the filtered moisture, it will sag, driving the toothed belt 304 and the sliding rail 309 to sag synchronously. During the sagging process of the sliding rail 309, it will drive the lifting plate 313 to slide down along the outer wall of the slide bar 312 in the notch 311 and compress the spring 314. The detection end of the displacement monitoring element 315 will generate an electrical signal as the lifting plate 313 descends, indicating that the moisture content in the filter bag 301 is relatively high and the weight is heavy. The controller then controls the voltage input to the dehumidifier 602 through the generated electrical signal, increases the output power of the dehumidifier 602, and improves the effect of sucking out and discharging the moisture in the filter bag 301. The lower lifting plate 313 is slidably connected to a part of the sliding rail 309 of the lower filter bag 301. This part of the filter bag 301 has undergone the treatment of sucking out moisture and dust. Therefore, when the filter bag 301 and the sliding rail 309 are driven to rotate without sagging, it indicates that there is no moisture in the filter bag 301 after being sucked by the dehumidifier 602, and the weight remains at the weight without moisture and no sagging will occur. When the filter bag 301 still sags after being sucked by the dehumidifier 602, it indicates that the moisture in the filter bag 301 has not been completely sucked out. The lower lifting plate 313 will slide down according to the sagging condition of the filter bag 301. The displacement monitoring element 315 detects the lifting plate 313 and generates an electrical signal. The controller controls the first solenoid valve 803 to open and the second solenoid valve to close through the generated electrical signal. The warm air transported through the flow pipe 801 into the reflux box 802 will enter the square box and be discharged from the drying port, further drying the filter bag 301 (at this time, the filter bag 301 has been dried by the heating element 508 and sucked by the dehumidifier 602, and there is less residual moisture inside. The warm air filtered by the liquid isolation valve can dry the residual moisture in the filter bag 301).

[0062] The above embodiments are only used to illustrate the technical solutions of the present invention, not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-voltage switchgear for a coal mine shaft power supply system, characterized in that, Including: A cabinet body (1), one side of the cabinet body (1) is communicated with an air outlet (101), and a fixed box (2) is fixedly installed on the upper end surface of the cabinet body (1); A conveying component (3), the conveying component (3) includes a filter bag (301) arranged in the fixed box (2), the filter bag (301) is driven to rotate, a dust filtering layer (302) is fixedly installed on the outer wall of the filter bag (301), a moisture-absorbing sponge (303) is fixedly installed inside the filter bag (301), a detection plate (310) is fixedly installed at the bottom end inside the fixed box (2) and at the midline position on one side of the filter bag (301), two notch openings (311) are formed in the detection plate (310), a lifting plate (313) is elastically slidably installed in the notch openings (311), a displacement monitoring component (315) is arranged above the lifting plate (313), and the displacement monitoring component (315) is electrically connected to a controller; An air inlet component (4) for sucking external air into the fixed box (2) for dust removal and dehumidification; A dust removal and dehumidification component (5) for cleaning the dust filtered by the filter bag (301) and the dust filtering layer (302), and drying the moisture filtered in the moisture-absorbing sponge (303); A moisture absorption component (6) for sucking and discharging the moisture dried in the moisture-absorbing sponge (303); An air inlet barrel (401) is embedded in the upper end surface of the fixed box (2), fixing covers (402) are symmetrically installed on the outer wall of the air inlet barrel (401), an irradiation lamp (403) and a light source detection component (404) are respectively fixedly installed in the fixing covers (402), the light source detection component (404) is electrically connected to the controller, a connection cover (405) is communicated with the lower end surface of the air inlet barrel (401), the connection cover (405) is in contact connection with the outer wall of the filter bag (301), an air inlet pipe (406) is embedded in the bottom end inside the fixed box (2), an air extractor (407) is fixedly installed in the air inlet pipe (406), a contact cover (408) is communicated with the upper end surface of the air extractor (407), and the contact cover (408) is in contact connection with the inner wall of the filter bag (301) at a position corresponding to the connection cover (405); Support plates (607) are fixedly and symmetrically installed at the bottom end inside the fixed box (2), a rolling wheel (608) is rotatably installed between the support plates (607), the rolling wheel (608) is in extrusion contact connection with the filter bag (301), and the rolling wheel (608) is belt-drivenly connected with a rotating tooth (308); On the inner bottom end of the fixed box (2), two pairs of support frames (305) are symmetrically installed. On the opposite ends of the support frames (305), a fixed disk (306) is fixedly installed. A rotating gear (308) is rotatably installed on the fixed disk (306). On the inner wall of the filter bag (301), two toothed belts (304) are symmetrically installed. The toothed belts (304) are engaged with the rotating gears (308). On one side of the fixed disk (306), a rotation driving member (307) is fixedly installed. The output end of the rotation driving member (307) penetrates through the fixed disk (306) and is fixedly connected to the rotating gear (308). The rotating gears (308) are connected by belt drive.

2. The high-voltage switchgear for a coal mine power supply system according to claim 1, characterized in that, On both sides of the toothed belt (304), sliding rails (309) are fixedly installed. A sliding rod (312) is fixedly installed in the notch (311). The lifting plate (313) is slidably connected to the sliding rod (312). The lifting plate (313) is slidably connected to the sliding rail (309). A spring (314) is fixedly installed between the lifting plate (313) and the notch (311). The displacement monitoring element (315) is fixedly connected to the inner top end of the notch (311). The detection end of the displacement monitoring element (315) is fixedly connected to the lifting plate (313). The displacement monitoring element (315) is electrically connected to the controller.

3. The high-voltage switchgear for a coal mine power supply system according to claim 1, characterized in that, An air outlet pipe (501) is embedded in the upper end surface of the fixed box (2). A dust suction fan (502) is connected to the air outlet pipe (501). The dust suction fan (502) is electrically connected to the controller. A fixing plate (503) is fixedly installed at the lower end of the dust suction fan (502). On the lower end surface of the fixing plate (503), two magnets (504) are symmetrically installed. A dust suction cover (505) is fixedly installed on the lower end surface of the fixing plate (503) and between the magnets (504). The dust suction cover (505) is in contact connection with the outer wall of the filter bag (301). Inside the filter bag (301) and at the positions corresponding to the magnets (504), a partition plate (506) is provided. The partition plate (506) is magnetically coupled with the magnets (504).

4. A high-voltage power distribution cabinet for a coal mine shaft power supply system according to claim 3, characterized in that, On both sides of the dust suction cover (505), connecting frames (507) are fixedly installed. A heating element (508) is fixedly installed on the upper end surface of the connecting frames (507).

5. A high-voltage power distribution cabinet for a coal mine shaft power supply system according to claim 4, characterized in that, On the upper end surface of the fixed box (2), two fixing frames (601) are symmetrically installed. A moisture absorber (602) is fixedly installed between the fixing frames (601). The moisture absorber (602) is electrically connected to the controller. A plurality of connecting pipes (603) are connected to the lower end surface of the moisture absorber (602). The lower ends of the connecting pipes (603) penetrate through the fixed box (2) and are connected to contact heads (604). The contact heads (604) are in contact connection with the outer wall of the filter bag (301). On both sides of the contact heads (604), air inlet pipes (605) are connected. A delivery pipe (606) is connected to one side of the moisture absorber (602).

6. The high-voltage power distribution cabinet for a coal mine shaft power supply system according to claim 5, characterized in that It also includes a cooling component (7). The cooling component (7) includes a fixed box (701) fixedly installed at the top end inside the cabinet body (1). The fixed box (701) is filled with cooling water. A ventilation copper pipe is arranged inside the fixed box (701). An air inlet (702) is fixedly installed on one side of the fixed box (701). One end of the air inlet (702) penetrates the fixed box (701) and is communicated with the ventilation copper pipe. An air outlet is provided on the other side of the fixed box (701). The ventilation copper pipe is communicated with the air outlet. A circulation pipe (703) is communicated with one side of the fixed box (701). The circulation pipe (703) penetrates the cabinet body (1) and extends to the outside. A cooling device (704) is fixedly installed inside the circulation pipe (703). The cooling device (704) is composed of cooling fins and a circulation water pump. The cooling device (704) is communicated with a delivery pipe (606). A liquid isolation valve is embedded on the inner wall of the delivery pipe (606). A drain port (705) is communicated with the lower end surface of the cooling device (704). A pressure relief valve is fixedly installed on the inner wall of the drain port (705).

7. The high-voltage power distribution cabinet for a coal mine shaft power supply system according to claim 6, characterized in that, It also includes a dehumidifying component (8). The dehumidifying component (8) includes a return box (802) fixedly installed at the bottom end inside the fixed box (2) and below the filter bag (301). The return box (802) is composed of a long box and a square box communicated with one side. A flow pipe (801) is communicated with one side of the long box. The flow pipe (801) is communicated with the delivery pipe (606). A first electromagnetic valve (803) is embedded on the inner wall of the square box. The upper end surface of the square box is in contact connection with the filter bag (301). A drying port is provided on the upper end surface of the square box. A discharge air pipe (804) is communicated with one side of the long box. A second electromagnetic valve is fixedly installed on the inner wall of the discharge air pipe (804). The first electromagnetic valve (803) and the second electromagnetic valve are electrically connected to the controller. A U-shaped bend pipe (805) is fixedly installed inside the flow pipe (801). An opening valve (806) is embedded at a position near the lower part of the outer wall of the U-shaped bend pipe (805). Absorbent cotton is fixedly installed on the inner wall of the U-shaped bend pipe (805).

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