High-voltage power distribution cabinet with outdoor sand-proof effect

Abstract

The invention relates to the technical field of power distribution cabinets, and discloses a high-voltage power distribution cabinet with an outdoor sand-proof effect, which comprises a cabinet body, a cabinet door is arranged on the front side of the cabinet body, ventilation sand-proof devices are arranged on the left side and the right side of the cabinet body, a sealing device is arranged on the front side of the cabinet body, and when the cabinet door is closed, the cabinet door extrudes a sealing rubber strip and a telescopic spring to contract, so that the sealing rubber strip is sealed. After the cabinet door is closed, the telescopic spring resets to eject the sealing rubber strip, so that the sealing rubber strip is tightly attached to the cabinet door, sand and dust are prevented from entering from gaps when the cabinet door is closed, in normal weather, the dust filtering net and the dustproof net are arranged, external sand and dust can be protected while ventilation and heat dissipation are achieved, and when a severe environment is encountered, tiny sand and dust can be possibly blown up by strong wind, and dust can be prevented from entering the cabinet door. A rotating motor is started to drive a threaded rod to rotate, a plurality of threaded sliding blocks can move upwards along the threaded rod, a connecting plate and a sliding block also move, a limiting insertion plate is inserted into a notch, a positioning column is inserted into a limiting hole, a ventilation hole is blocked, and thin dust particles can be prevented from entering.

Description

Technical Field

[0001] The invention relates to the technical field of power distribution cabinets, and in particular to a high-voltage power distribution cabinet with outdoor wind and sand protection effect. Background Art

[0002] The distribution cabinet is an important equipment in the power transmission link. A large number of components are installed inside. Its function is to distribute and control electrical equipment. When the circuit is overloaded, short-circuited or leaking, the distribution cabinet can also provide power-off protection. The installation and use range of distribution cabinets is very wide. Distribution cabinets are used in plateaus, mountains, plains, mountains, etc. Distribution cabinets are divided into power distribution cabinets, lighting distribution cabinets, and metering cabinets. They are the final equipment of the distribution system. Distribution cabinets are a general term for motor control centers. Distribution cabinets are suitable for occasions with relatively dispersed loads and fewer circuits. Motor control centers are used in occasions with concentrated loads and more circuits. They distribute the electrical energy of a circuit of the upper-level distribution equipment to the nearest load. This level of equipment should provide protection, monitoring and control for the load.

[0003] After searching, the applicant found that a Chinese patent disclosed "an outdoor power station distribution cabinet based on wind and sand prevention technology", and its publication (announcement) number is "CN 109217129 A". The patent mainly includes a cabinet body, and partitions are symmetrically arranged on the left and right sides of the inner cavity of the cabinet body. The partitions divide the inner cavity of the cabinet body into an installation cavity and a dust filter cavity. A vent is arranged at the bottom of the partition. The present invention isolates and protects the installation cavity by setting a dust filter cavity, and at the same time cooperates with a shutter and a dust filter net to filter fixed particles in the air, improve air quality, and prevent sand and dust particles in the air from entering the installation cavity with the air and covering the electrical components, affecting the normal operation of the electrical components. However, there are defects in the above-mentioned prior art to prevent sand and dust by using shutters and dust filters. Although the shutters can block larger particles of sand and dust to a certain extent, the blocking effect is not ideal for fine sand and dust particles. In addition, under harsh environmental conditions such as strong winds and heavy rains, the shutters may be damaged or deformed, thereby affecting its anti-dust performance. For this reason, we propose a high-voltage distribution cabinet with outdoor wind and sand prevention effect. Summary of the invention

[0004] The purpose of the present invention is to provide a high-voltage distribution cabinet with outdoor wind and sand protection effect, so as to solve the defects of the above-mentioned prior art in preventing sand and dust through shutters and dust filters proposed in the above-mentioned background technology. Although the shutters can block larger particles of sand and dust to a certain extent, the blocking effect is not ideal for fine sand and dust particles, and under harsh environmental conditions such as strong winds and heavy rains, the shutters may be damaged or deformed, thereby affecting their anti-dust performance.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-voltage power distribution cabinet with outdoor wind and sand protection effect, comprising a cabinet body, a cabinet door is provided on the front side of the cabinet body, ventilation and sand prevention devices are provided on the left and right sides of the cabinet body, and a sealing device is provided on the front side of the cabinet body. The ventilation and sand prevention device comprises a metal frame and a bottom plate fixedly installed on the upper and lower ends of the side of the cabinet body, a plurality of groups of threaded sliders and sliding blocks are connected between the metal frame and the bottom plate through straight rods and threaded rods, a plurality of groups of dust-proof and breathable covers distributed at equal distances are fixedly installed on the side of the cabinet body, a rotating motor is fixedly connected to the top rear end of the metal frame, a limited plug plate and a positioning column are connected between the threaded slider and the sliding block through a connecting plate, a notch is provided inside the dust-proof and breathable cover, and the sealing device comprises a door frame fixedly installed on the front side surface of the cabinet body, a cavity is provided inside the four sides of the door frame, a plurality of telescopic springs are evenly fixedly connected inside the cavity, a sealing strip is fixedly connected to the other ends of the plurality of telescopic springs, and the door frame is arranged on the outside of the cabinet door, and the sealing strip is in contact with the outer wall of the cabinet door.

[0006] As a further solution of the present invention, installation grooves are provided on the left and right sides of the cabinet body, a dustproof net is fixedly installed inside the installation groove, a plurality of ventilation holes are provided on the surface of the dustproof and breathable cover and through the left and right sides of the cabinet body, and a dust filter net is provided inside the ventilation holes, and a rainproof ceiling is fixedly installed on the top of the cabinet body.

[0007] As a further solution of the present invention, one end of the threaded rod passes through the metal frame and is fixedly connected to the output end of the rotating motor, while the other end is rotatably connected to the inside of the base plate. The two ends of the straight rod are respectively fixedly installed on the bottom of the metal frame and the surface of the base plate. The sliding blocks are provided in multiple groups and are slidably connected to the circumferential surface of the straight rods. The threaded sliding blocks are provided in multiple groups and are threadedly connected to the circumferential surface of the threaded rods. The connecting plate is fixedly installed between the threaded sliding blocks and the sliding blocks.

[0008] As a further solution of the present invention, the limit plug plate is fixedly installed on the surface of the connecting plate and is located directly below the slot, and limit holes are provided at the bottom of the dustproof and breathable cover and on both sides of the slot. Two groups of positioning columns are provided, and the two groups of positioning columns are fixedly installed on the surface of the connecting plate and are located directly below the two groups of limit holes.

[0009] As a further solution of the present invention, a component mounting rack is provided inside the cabinet, and a fire extinguishing device and a heat dissipation device are provided on the front and rear sides of the cabinet, respectively.

[0010] As a further solution of the present invention, the fire extinguishing device includes a smoke sensor and a dry powder fire extinguisher, the smoke sensor is fixedly installed on the top front end of the cabinet, the dry powder fire extinguisher is fixedly installed on the internal right front end surface of the cabinet, the dry powder box is fixedly installed at the internal top axis of the cabinet, and a plurality of dry powder nozzles distributed at equal intervals are fixedly arranged on the bottom of the dry powder box.

[0011] As a further solution of the present invention, the feed ends of the multiple dry powder nozzles are connected to the interior of the dry powder box, a feed pipe extending into the dry powder box is fixedly installed on the top of the dry powder fire extinguisher, and an electric valve is fixedly provided on one side of the bottom end of the feed pipe.

[0012] As a further solution of the present invention, the heat dissipation device includes a thermally conductive silicone pad fixedly installed on the rear side of the component mounting frame, and a plurality of heat pipes distributed at equal distances are fixedly installed on the surface of the thermally conductive silicone pad on the side away from the component mounting frame. A protective box is fixedly installed on the rear surface of the cabinet, and one end of the plurality of heat pipes away from the thermally conductive silicone pad extends to the outside of the cabinet and is arranged inside the protective box, and a sealing plug is provided inside one end of the plurality of heat pipes.

[0013] As a further solution of the present invention, a stabilizing device is provided at the bottom of the cabinet, and the stabilizing device includes four groups of angle steels fixedly installed at the four corners of the cabinet, a receiving steel sheet is fixedly installed inside the angle steel, connecting parts are fixedly installed on both side surfaces of the angle steel, and a stabilizing plate is connected between the connecting parts by bolts, and an arc-shaped fixing seat is fixedly installed on the bottom of the four groups of angle steels, and a plurality of mounting holes are opened on the surface of the arc-shaped fixing seat.

[0014] Technical effects and advantages of the present invention: 1. Through the ventilation and sand prevention device and sealing device, when the cabinet door is closed, the cabinet door will squeeze the sealing strip, so that the telescopic spring is forced to shrink. After the cabinet door is closed, the telescopic spring is reset, and the sealing strip is ejected, so that it fits tightly with the cabinet door, thereby effectively preventing sand and dust from entering the cabinet body from the gap when the cabinet door is closed. In normal weather, dust filters and dust prevention nets are respectively arranged inside and outside the ventilation holes, which can provide good protection against external sand and dust while ventilating and dissipating heat. When encountering severe environmental conditions, such as strong winds that may blow up fine sand and dust, the rotating motor is started to drive the threaded rod to rotate, and multiple threaded sliders will move upward along the threaded rod, and then the connecting plate and the sliding block will also move accordingly. At this time, the limit plug plate is inserted into the notch, and the positioning column is inserted into the limit hole. The ventilation holes opened on the side of the cabinet are blocked, which can prevent finer sand and dust particles from entering the cabinet body. 2. Through the heat dissipation device and fire extinguishing device, once the ventilation holes are blocked, the heat generated by the components inside the cabinet cannot be discharged through the ventilation holes. At this time, the heat-conducting silicone pad made of heat-conducting material on one side of the component mounting frame is used to indirectly connect the heating element, and the other side of the thermally conductive silicone pad is connected to multiple heat pipes to ensure a good heat transfer effect. The other end of the heat pipe extends to the outside of the cabinet, which can quickly transfer the heat, thereby playing an effective heat dissipation role. When the temperature inside the cabinet is too high and a fire occurs, the smoke sensor will quickly detect the smoke and automatically open the electric valve. At this time, the dry powder inside the dry powder fire extinguisher will enter the dry powder box through the feed pipe, and then be sprayed out through the dry powder nozzle to extinguish the fire inside the cabinet. This design can extinguish the fire source as soon as the fire occurs, minimizing the losses caused by the fire; 3. By setting up a stabilizing device, angle steels are installed at the four corners of the cabinet. The arc-shaped fixing seat at the bottom significantly increases the contact area with the ground. The mounting holes on the surface facilitate the cabinet to be firmly fixed to the ground by screws. The stabilizing plates and connectors are connected by bolts between the angle steels, which greatly enhances the stability of the cabinet and prevents the cabinet from being blown down in harsh environments. Through such a device design, the overall height of the cabinet is also raised, effectively avoiding direct contact between the bottom of the cabinet and the ground, thereby preventing it from being accumulated by wind and sand on the ground. Once wind and sand accumulate around the cabinet, it will hinder the circulation of air, and seriously affect the natural ventilation and heat dissipation effect of the cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the back three-dimensional structure of the present invention; Figure 3 It is a schematic diagram of the internal three-dimensional structure of the present invention; Figure 4 It is a schematic diagram of the internal structure of the present invention; Figure 5 It is a front cross-sectional structural schematic diagram of the present invention; Figure 6 It is a right side cross-sectional structural schematic diagram of the present invention; Figure 7 It is a structural schematic diagram of the ventilation and sand prevention device of the present invention; Figure 8 It is a schematic diagram of the structure of the stabilizing device of the present invention; Fig. 9 It is a schematic diagram of the structure of the fire extinguishing device of the present invention; Fig.10 It is a schematic structural diagram of the sealing device of the present invention; Fig.11 for Figure 7 The enlarged structural diagram at A in the middle; Fig.12 for Fig.10 Enlarged structural diagram at B in the middle.

[0016] In the figure: 1, cabinet; 2, ventilation and sand prevention device; 3, stabilizing device; 4, sealing device; 5, cabinet door; 6, fire extinguishing device; 7, heat dissipation device; 8, rainproof ceiling; 9, dustproof net; 10, component mounting frame; 11, ventilation hole; 12, mounting slot; 201, rotating motor; 202, threaded rod; 203, metal frame; 204, bottom plate; 205, straight rod; 206, dustproof and breathable cover; 207, threaded slider; 208, sliding block; 209, connecting plate; 210, limit plug plate; 211 , positioning column; 212, notch; 301, angle steel; 302, receiving steel sheet; 303, stabilizing plate; 304, connecting piece; 305, arc-shaped fixing seat; 401, door frame; 402, cavity; 403, telescopic spring; 404, sealing strip; 601, smoke sensor; 602, dry powder fire extinguisher; 603, feed pipe; 604, dry powder box; 605, dry powder nozzle; 606, electric valve; 701, thermal conductive silicone pad; 702, heat pipe; 703, protective box; 704, sealing plug. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1

[0018] Please see attached Figure 1 - Attachment Figure 7 And attached Fig.10 - Attachment Fig.12The present invention discloses a high-voltage power distribution cabinet with outdoor wind and sand protection effect, comprising a cabinet body 1, a cabinet door 5 is arranged on the front side of the cabinet body 1, ventilation and sand prevention devices 2 are arranged on the left and right sides of the cabinet body 1, a sealing device 4 is arranged on the front side of the cabinet body 1, the ventilation and sand prevention device 2 comprises a metal frame 203 and a bottom plate 204 fixedly installed on the upper and lower ends of the side of the cabinet body 1, a plurality of groups of threaded sliders 207 and sliding blocks 208 are connected between the metal frame 203 and the bottom plate 204 through a straight rod 205 and a threaded rod 202, a plurality of groups of dust-proof and breathable covers 206 distributed at equal distances are fixedly installed on the side of the cabinet body 1, a rotating motor 201 is fixedly connected to the top rear end of the metal frame 203, and the threaded sliders 207 and The sliding blocks 208 are connected to the limited plug plate 210 and the positioning column 211 through the connecting plate 209, and a notch 212 is provided inside the dustproof and breathable cover 206. The sealing device 4 includes a door frame 401 fixedly installed on the front surface of the cabinet body 1, and a cavity 402 is provided inside the four sides of the door frame 401. A plurality of telescopic springs 403 are evenly and fixedly connected inside the cavity 402, and the other ends of the plurality of telescopic springs 403 are commonly and fixedly connected to a sealing strip 404. The door frame 401 is arranged on the outside of the cabinet door 5, and the sealing strip 404 is in contact with the outer wall of the cabinet door 5. The left and right sides of the cabinet body 1 are provided with mounting grooves 12, and a dustproof net is fixedly installed inside the mounting grooves 12. 9, a plurality of ventilation holes 11 are provided on the surface of the dustproof and breathable cover 206 and on the left and right sides of the cabinet 1, and a dust filter is provided inside the ventilation holes 11, and a plurality of rows of ventilation holes 11 are provided, and a plurality of ventilation holes 11 are provided at equal distances in each row, and the ventilation holes 11 on the dustproof and breathable cover 206 correspond to the ventilation holes 11 on the side of the cabinet 1, and a rainproof ceiling 8 is fixedly installed on the top of the cabinet 1, and a section is extended at the front and rear ends of the rainproof ceiling 8 to prevent rain and dust from directly impacting the cabinet 1, one end of the threaded rod 202 passes through the metal frame 203 and is fixedly connected to the output end of the rotating motor 201, and the other end thereof is rotatably connected to the inside of the bottom plate 204, and the two ends of the straight rod 205 are respectively fixed It is fixedly installed on the bottom of the metal frame 203 and the surface of the bottom plate 204, the sliding block 208 is provided with multiple groups and is slidably connected to the circumferential surface of the straight rod 205, the threaded slider 207 is provided with multiple groups and is threadedly connected to the circumferential surface of the threaded rod 202, the connecting plate 209 is fixedly installed between the threaded slider 207 and the sliding block 208, the limiting plug plate 210 is fixedly installed on the surface of the connecting plate 209 and is located directly below the notch 212, and limiting holes are provided at the bottom of the dustproof and breathable cover 206 and on both sides of the notch 212, and two groups of positioning columns 211 are provided, and the two groups of positioning columns 211 are fixedly installed on the surface of the connecting plate 209 and are located directly below the two groups of limiting holes.

[0019] The rotating motor 201 is fixed on the top of the metal frame 203, and the rotating motor 201 can be stored in the motor box to prevent the rotating motor 201 from being exposed to the outside for a long time and causing damage. When the limiting plug plate 210 is inserted into the slot 212, the connecting plate 209 fits with the bottom of the dustproof and breathable cover 206, so that the external dust can be completely blocked from entering the cabinet 1 through the ventilation hole 11. The positioning column 211 is adapted to the limiting hole opened at the bottom of the dustproof and breathable cover 206 so that it can be tightly They are fitted together. When encountering normal weather, the double-layer effect of the dust filter net and the dustproof net 9 inside the ventilation hole 11 can prevent normal sand and dust from entering the cabinet body 1. In bad weather, it is necessary to seal the ventilation hole 11 through the ventilation and sand prevention device 2. There is often a gap between the cabinet door 5 and the cabinet body 1, and fine sand and dust can easily enter. The sealing strip 404 fits tightly with the cabinet door 5 to avoid the appearance of gaps. The telescopic spring 403 and the sealing strip 404 have sufficient elasticity and do not affect the opening and closing of the cabinet door 5.

[0020] Specifically, when the cabinet door 5 is closed, the cabinet door 5 will squeeze the sealing strip 404 to make the telescopic spring 403 contract under force. After the cabinet door 5 is closed, the telescopic spring 403 is reset to pop out the sealing strip 404 and fit tightly with the cabinet door 5 to prevent dust from entering the cabinet body 1 through the gap when the cabinet door 5 is closed. Under normal weather conditions, by arranging a dust filter net and a dustproof net 9 inside and outside the ventilation hole 11 respectively, the external dust can be protected while ventilation and heat dissipation can be performed. When encountering harsh environmental conditions, strong winds may blow up fine dust. At this time, the rotating motor 201 drives the threaded rod 202 to rotate, and multiple threaded sliders 207 move upward along the threaded rod 202, so that the connecting plate 209 and the sliding block 208 move accordingly, and the limiting plug plate 210 is inserted into the slot 212, and the positioning column 211 is inserted into the limiting hole. At this time, the ventilation hole 11 opened on the side of the cabinet body 1 is blocked to prevent finer dust particles from entering the cabinet body 1. Embodiment 2

[0021] Please see attached Figure 1 - Attachment Figure 6 And attached Fig. 9This embodiment is a further elaboration of the first embodiment. A component mounting frame 10 is provided inside the cabinet 1. A fire extinguishing device 6 and a heat dissipation device 7 are provided on the front and rear sides of the cabinet 1, respectively. The fire extinguishing device 6 includes a smoke sensor 601 and a dry powder fire extinguisher 602. The smoke sensor 601 is fixedly installed at the top front end of the cabinet 1. The dry powder fire extinguisher 602 is fixedly installed on the right front end surface of the cabinet 1. A dry powder box 604 is fixedly installed at the top axis of the cabinet 1. A plurality of dry powder nozzles 605 distributed at equal intervals are fixedly provided at the bottom of the dry powder box 604. The feed ends of the plurality of dry powder nozzles 605 are connected to the inside of the dry powder box 604. Similarly, a feed pipe 603 extending into the dry powder box 604 is fixedly installed on the top of the dry powder fire extinguisher 602, and an electric valve 606 is fixedly installed on one side of the bottom end of the feed pipe 603. The heat dissipation device 7 includes a thermal conductive silicone pad 701 fixedly installed on the rear side of the component mounting frame 10, and a plurality of heat pipes 702 distributed at equal distances are fixedly installed on the side surface of the thermal conductive silicone pad 701 away from the component mounting frame 10. A protective box 703 is fixedly installed on the rear side surface of the cabinet 1, and one end of the plurality of heat pipes 702 away from the thermal conductive silicone pad 701 extends to the outside of the cabinet 1 and is arranged inside the protective box 703, and a sealing plug 704 is provided inside one end of the plurality of heat pipes 702.

[0022] The smoke sensor 601 is electrically connected to the electric valve 606. When the smoke sensor 601 detects a fire inside the cabinet 1, the electric valve 606 automatically opens. When natural ventilation is not possible to dissipate heat, heat transfer through the heat pipe 702 is required. The heat pipe 702 is generally hollow. There is usually a working medium inside the heat pipe 702. Efficient heat transfer is achieved through the phase change of the working medium. The port of the heat pipe 702 itself is blocked with a sealing plug 704 to prevent dust from entering from the hollow part of the heat pipe 702. The protective box 703 The heat pipe 702 is stored inside to further protect the heat pipe 702. The thermal conductive silicone pad 701 has excellent thermal conductivity and can quickly transfer the heat generated by the heating element to the heat pipe 702, which helps to dissipate the heat in time and prevent heat from accumulating at the heating element, thereby ensuring the normal operating temperature of the equipment. The thermal conductive silicone pad 701 has efficient thermal conductivity and good insulation performance, which can prevent the occurrence of safety problems such as electrical short circuit and leakage, and provide reliable safety protection for electrical equipment such as high-voltage distribution cabinets.

[0023] Specifically, when the ventilation hole 11 is blocked, the heat generated by the components inside the cabinet 1 cannot be discharged through the ventilation hole 11. At this time, the heat-generating component is indirectly connected through the heat-conducting silicone pad 701 made of heat-conducting material on one side of the component mounting frame 10, and the other side of the heat-conducting silicone pad 701 is connected to multiple heat pipes 702 to ensure a good heat transfer effect. The other end of the heat pipe 702 is connected to the outside of the cabinet 1 to quickly transfer the heat and play a role in heat dissipation. When the temperature is too high and a fire occurs, the smoke sensor 601 detects the smoke and automatically opens the electric valve 606. The dry powder inside the dry powder fire extinguisher 602 enters the dry powder box 604 through the feed pipe 603, and is then sprayed out through the dry powder nozzle 605 to extinguish the fire inside the cabinet 1, thereby achieving the goal of extinguishing the fire source as soon as possible after the fire occurs, thereby reducing the losses caused by the fire. Embodiment 3

[0024] Please see attached Figure 1 - Attachment Figure 5 And attached Figure 8 This embodiment is a further elaboration of the second embodiment. A stabilizing device 3 is provided at the bottom of the cabinet 1. The stabilizing device 3 includes four groups of angle steels 301 fixedly installed at the four corners of the cabinet 1. A receiving steel sheet 302 is fixedly installed inside the angle steel 301. Connectors 304 are fixedly installed on both side surfaces of the angle steel 301. Stabilizing plates 303 are connected between the connectors 304 by bolts. Arc-shaped fixing seats 305 are fixedly installed at the bottoms of the four groups of angle steels 301, and a plurality of mounting holes are provided on the surface of the arc-shaped fixing seats 305.

[0025] The dust carried by strong winds accumulates on the outer surface of the cabinet 1 for a long time, which may also cause wear to the outer shell of the cabinet 1, making the outer shell thinner and deformed, reducing its protective performance, and affecting the overall stability and safety of the equipment. The four corners of the cabinet 1 are installed on the receiving steel sheet 302 inside the angle steel 301 to provide stable support for the cabinet 1.

[0026] Specifically, by installing angle steels 301 at the four corners of the cabinet 1, the arc-shaped fixing seat 305 at the bottom increases the contact area with the ground, and the mounting holes on the surface facilitate fixing it to the ground by screws. The angle steels 301 are connected to the stabilizing plates 303 and the connecting parts 304 by bolts, which enhances the stability. The device raises the overall height of the cabinet 1 to prevent the bottom of the cabinet 1 from contacting the ground and causing accumulation of sand on the ground. The accumulation of sand around the cabinet 1 will hinder air circulation and affect the natural ventilation and heat dissipation effect of the cabinet 1.

[0027] Working principle of the present invention: The present invention is a high-voltage power distribution cabinet with outdoor wind and sand protection effect. First, by installing angle steels 301 at the four corners of the cabinet body 1, the arc-shaped fixing seat 305 at the bottom increases the contact area with the ground, and the mounting holes on the surface are convenient for fixing it to the ground by screws. The angle steels 301 are connected to the stabilizing plates 303 and the connecting pieces 304 by bolts, which enhances the stability. The setting of the angle steels 301 raises the overall height of the cabinet body 1 to prevent the bottom of the cabinet body 1 from contacting the ground and causing the accumulation of wind and sand on the ground. When the cabinet door 5 is closed, the cabinet door 5 will squeeze The sealing strip 404 causes the telescopic spring 403 to contract under force. After the cabinet door 5 is closed, the telescopic spring 403 is reset to pop out the sealing strip 404 and fit tightly with the cabinet door 5 to prevent dust from entering the cabinet body 1 through the gap when the cabinet door 5 is closed. In normal weather, dust filters and dust-proof nets 9 are respectively arranged inside and outside the ventilation hole 11 to protect against external dust while allowing ventilation and heat dissipation. When encountering harsh environmental conditions, strong winds may blow up fine dust. At this time, the rotating motor 201 drives the threaded rod 202 to rotate, and the multiple threaded sliders 2 07 moves upward along the threaded rod 202, so that the connecting plate 209 and the sliding block 208 move along with it, the limiting plug plate 210 is inserted into the slot 212, and the positioning column 211 is inserted into the limiting hole. At this time, the ventilation hole 11 opened on the side of the cabinet 1 is blocked to prevent finer dust particles from entering the cabinet 1. After the ventilation hole 11 is blocked, the heat generated by the components inside the cabinet 1 cannot be discharged through the ventilation hole 11. At this time, the heat-generating component is indirectly connected through the heat-conducting material thermal conductive silicone pad 701 on one side of the component mounting frame 10, and the other side of the thermal conductive silicone pad 701 A plurality of heat pipes 702 are connected to ensure a good heat transfer effect. The other end of the heat pipe 702 is connected to the outside of the cabinet 1 to quickly transfer the heat and play a heat dissipation role. When the temperature is too high and a fire occurs, the smoke sensor 601 detects the smoke and automatically opens the electric valve 606. The dry powder inside the dry powder fire extinguisher 602 enters the dry powder box 604 through the feed pipe 603 and is then sprayed out through the dry powder nozzle 605 to extinguish the fire inside the cabinet 1, thereby achieving the goal of extinguishing the fire source as soon as possible when the fire occurs. At this point, the whole process ends.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-voltage power distribution cabinet with outdoor wind and sand protection effect, comprising a cabinet body (1), characterized in that: The cabinet body (1) is provided with a cabinet door (5) on the front side, and a ventilation and sand prevention device (2) is provided on the left and right sides of the cabinet body (1). The cabinet body (1) is provided with a sealing device (4) on the front side. The ventilation and sand prevention device (2) comprises a metal frame (203) and a bottom plate (204) fixedly mounted on the upper and lower ends of the side of the cabinet body (1). A plurality of groups of threaded sliders (207) and sliding blocks (208) are connected between the metal frame (203) and the bottom plate (204) via straight rods (205) and threaded rods (202). A plurality of groups of dustproof and breathable covers (206) are fixedly mounted on the side of the cabinet body (1) at equal distances. A rotating motor (201) is fixedly connected to the top rear end of the metal frame (203). A limit plate (210) and a positioning column (211) are connected between the threaded slider (207) and the sliding block (208) via a connecting plate (209). A notch (212) is provided inside the dustproof and breathable cover (206). The sealing device (4) comprises a door frame (401) fixedly mounted on the front surface of the cabinet body (1); a cavity (402) is provided around the door frame (401); a plurality of telescopic springs (403) are evenly and fixedly connected inside the cavity (402); a sealing strip (404) is fixedly connected to the other ends of the plurality of telescopic springs (403); the door frame (401) is arranged outside the cabinet door (5), and the sealing strip (404) is in contact with the outer wall of the cabinet door (5).

2. The high-voltage power distribution cabinet with outdoor wind and sand protection effect according to claim 1 is characterized in that: The cabinet body (1) is provided with mounting grooves (12) on both left and right sides, a dustproof net (9) is fixedly installed inside the mounting grooves (12), a plurality of ventilation holes (11) are provided on the surface of the dustproof and breathable cover (206) and through both left and right sides of the cabinet body (1), and a dust filter net is provided inside the ventilation holes (11), and a rainproof ceiling (8) is fixedly installed on the top of the cabinet body (1).

3. The high-voltage power distribution cabinet with outdoor wind and sand protection effect according to claim 1 is characterized in that: One end of the threaded rod (202) passes through the metal frame (203) and is fixedly connected to the output end of the rotating motor (201), while the other end is rotatably connected to the inside of the bottom plate (204). The two ends of the straight rod (205) are respectively fixedly mounted on the bottom of the metal frame (203) and the surface of the bottom plate (204). The sliding block (208) is provided in multiple groups and is slidably connected to the circumferential surface of the straight rod (205). The threaded sliding blocks (207) are provided in multiple groups and are threadedly connected to the circumferential surface of the threaded rod (202). The connecting plate (209) is fixedly mounted between the threaded sliding blocks (207) and the sliding blocks (208).

4. The high-voltage power distribution cabinet with outdoor wind and sand protection effect according to claim 1 is characterized in that: The limiting plug plate (210) is fixedly mounted on the surface of the connecting plate (209) and is located directly below the notch (212); limiting holes are provided at the bottom of the dustproof and breathable cover (206) and on both sides of the notch (212); two groups of positioning columns (211) are provided; the two groups of positioning columns (211) are fixedly mounted on the surface of the connecting plate (209) and are located directly below the two groups of limiting holes.

5. The high-voltage power distribution cabinet with outdoor wind and sand protection effect according to claim 1 is characterized in that: A component mounting frame (10) is provided inside the cabinet (1), and a fire extinguishing device (6) and a heat dissipation device (7) are provided on the front and rear sides of the cabinet (1), respectively.

6. The high-voltage power distribution cabinet with outdoor wind and sand protection effect according to claim 5 is characterized in that: The fire extinguishing device (6) comprises a smoke sensor (601) and a dry powder fire extinguisher (602), wherein the smoke sensor (601) is fixedly mounted on the top front end of the cabinet (1), and the dry powder fire extinguisher (602) is fixedly mounted on the inner right front end surface of the cabinet (1). A dry powder box (604) is fixedly mounted on the inner top axis of the cabinet (1), and a plurality of dry powder spray nozzles (605) distributed at equal intervals are fixedly arranged on the bottom of the dry powder box (604).

7. The high-voltage power distribution cabinet with outdoor wind and sand protection effect according to claim 6 is characterized in that: The feed ends of the plurality of dry powder spray heads (605) are in communication with the interior of the dry powder box (604); a feed pipe (603) extending into the dry powder box (604) is fixedly mounted on the top of the dry powder fire extinguisher (602); an electric valve (606) is fixedly mounted on one side of the bottom end of the feed pipe (603).

8. The high-voltage power distribution cabinet with outdoor wind and sand protection effect according to claim 5 is characterized in that: The heat dissipation device (7) comprises a thermally conductive silicone pad (701) fixedly mounted on the rear side of the component mounting frame (10); a plurality of heat pipes (702) distributed at equal distances are fixedly mounted on a surface of the thermally conductive silicone pad (701) on a side away from the component mounting frame (10); a protective box (703) is fixedly mounted on the rear side surface of the cabinet (1); one end of the plurality of heat pipes (702) away from the thermally conductive silicone pad (701) extends to the outside of the cabinet (1) and is arranged inside the protective box (703); and a sealing plug (704) is provided inside one end of the plurality of heat pipes (702).

9. The high-voltage power distribution cabinet with outdoor wind and sand protection effect according to claim 1 is characterized in that: The bottom of the cabinet (1) is provided with a stabilizing device (3), the stabilizing device (3) comprising four groups of angle steels (301) fixedly mounted on the four corners of the cabinet (1), a receiving steel sheet (302) fixedly mounted inside the angle steels (301), connecting pieces (304) fixedly mounted on both side surfaces of the angle steels (301), stabilizing plates (303) connected between the connecting pieces (304) by bolts, and arc-shaped fixing seats (305) fixedly mounted on the bottoms of the four groups of angle steels (301), and a plurality of mounting holes are provided on the surface of the arc-shaped fixing seats (305).

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