Electrical switch cabinet with high protection performance

Abstract

The invention provides an electrical switch cabinet with high protection performance, and relates to the technical field of electrical switch cabinets, the electrical switch cabinet comprises a connecting pipe communicated with the side wall of a box body, the connecting pipe is provided with an expansion pipe, the expansion pipe is internally slidably connected with a sliding sleeve, the sliding sleeve is provided with a filtering layer, the sliding sleeve is internally in threaded connection with a follow-up frame, and the follow-up frame is internally in threaded connection with the filtering layer. The electrical switch cabinet has the technical advantages that a self-cleaning vibration mechanism can automatically trigger the dust removal process according to the blockage degree of a filter layer, the dust removal efficiency is improved, the dust removal efficiency is improved, and the dust removal efficiency is improved. When the filtering layer generates large resistance due to dust accumulation, the whole filtering assembly can move towards the motor under the action of wind power, the movement can drive pre-compression of the vibration system to form energy storage, after the motor stops running, stored elastic potential energy can be released, and vibration is generated through collision of the impact ring and the vibration ring.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical switch cabinet, more particularly, it is an electrical switch cabinet with high protection. BACKGROUND

[0002] In the contemporary industrial power system, high protection grade electrical switch cabinet as the core equipment of power control and distribution, its safe and stable operation is of great importance to the reliability of the entire power network, in order to meet the requirements of harsh industrial environment, especially in the presence of dust, humid and rainy or corrosive gas in the harsh working conditions, high protection grade electrical switch cabinet usually adopts IP65 or even higher level of sealing design, this kind of high sealing structure ensures that the internal sensitive electrical elements are not affected by external pollutants and moisture, significantly improves the safety and service life of the equipment, however, this kind of near airtight design at the same time brings an unavoidable technical problem-internal heat accumulation problem, during the operation of electrical switch cabinet, circuit breaker, contactor, relay and other electrical components will continuously produce a large amount of heat, these heat is difficult to effectively dissipate in the highly sealed environment, resulting in the rapid rise of the temperature in the cabinet, if not timely heat dissipation, high temperature environment will accelerate the aging of electronic components, reduce the performance of insulation materials, and even cause electrical failure or safety accident in serious cases, therefore, engineers must design an effective heat dissipation system while maintaining high protection level, which forms the engineering contradiction between sealing and heat dissipation efficiency.

[0003] In view of the above technical contradiction between sealing and heat dissipation, the current mainstream solution is to install a ventilation system with filtering device on the electrical switch cabinet, such as filter fan or heat dissipation louver, trying to maintain the protection level while realizing directional ventilation and heat dissipation, however, this seemingly reasonable design has exposed serious performance degradation problem in long-term actual operation, due to the existence of dust, fiber, oil mist and other pollutants in the industrial environment, the filtering device will gradually accumulate a large amount of fine particulate matter in the process of use, these pollutants can form a dense dust layer in a short time, which can significantly block the filter screen, resulting in air flow obstruction, as the degree of filter layer blockage increases, the heat dissipation efficiency of the ventilation system decreases exponentially, making it more difficult to control the temperature in the cabinet, more troublesome is that this blockage phenomenon often has progressive and hidden nature, which is difficult to be found in time through conventional inspection, when the maintenance personnel realize the problem, the filtering device may have failed, and the internal electrical components have been in an overheated state for a long time. SUMMARY

[0004] (I) Technical problems solved In view of the problems existing in the prior art, the present application provides an electrical switch cabinet with high protection, to solve the technical problems mentioned in the background.

[0005] (II) Technical solutions To achieve the above object, the present application provides the following technical scheme: An electrical switch cabinet with high protection, comprising a fixedly arranged cabinet, a cabinet door rotatably arranged on the cabinet, and an air outlet disc arranged on the sidewall of the cabinet; further comprising a vibration mechanism, the vibration mechanism comprising a connecting pipe communicated with the sidewall of the cabinet, an expansion pipe arranged on the connecting pipe, a sliding sleeve slidably connected in the expansion pipe, a filter layer arranged on the sliding sleeve, a follow-up frame threadedly connected in the sliding sleeve, a vibration ring coaxially arranged in the follow-up frame, and a fixing frame arranged in the connecting pipe, a plurality of guide sleeves equidistantly arranged on the fixing frame; further comprising a variable resistance mechanism, the variable resistance mechanism comprising a variable resistance pipe fixedly arranged on the fixing frame, a telescopic frame sealingly and slidably connected in the variable resistance pipe, and a telescopic ring arranged at both ends of the telescopic frame.

[0006] Preferably, the vibration mechanism further comprises guide rods slidably connected with the guide sleeves, and impact rings arranged on the guide rods, the impact rings and the vibration ring being coaxially arranged, in this technical feature, the guide rods serve as force transmission members to realize stable sliding movement in the guide sleeves, ensuring linear transmission of vibration force without deviation or swing.

[0007] Preferably, an impact spring is fixedly arranged on the fixing frame, the other end of the impact spring is connected with the impact ring, and the impact spring is arranged inside the guide rods, in this technical feature, the fixing frame serves as a rigid support base of the entire vibration mechanism, providing a stable fixing point for the impact spring and ensuring the accuracy of the elastic force acting direction.

[0008] Preferably, a fixing ring is threadedly connected with the expansion pipe, a return spring is arranged on the sliding sleeve, and the return spring abuts against the expansion pipe, in this technical feature, the expansion pipe serves as an expansion part of the airflow channel, providing a larger filtering area and airflow space, and also providing a threaded connection interface for the fixing ring.

[0009] Preferably, a motor is coaxially arranged in the guide sleeve, a positioning disc is arranged in the connecting pipe, the protruding end of the motor is connected with the positioning disc, and a plurality of blades are equidistantly arranged on the sidewall of the motor, in this technical feature, the guide sleeve serves as a mounting shell of the motor in addition to providing a sliding guide for the guide rods, and this integrated design reduces the number of components and optimizes the space utilization.

[0010] Preferably, the variable resistance mechanism further comprises a linkage frame arranged on the impact ring, the telescopic ring is connected with the linkage frame, compensation rings are arranged on both sides of the variable resistance pipe, and an intermediate disc is arranged in each compensation ring, in this technical feature, the linkage frame serves as a mechanical connection bridge between the impact ring and the telescopic ring, accurately transmitting the reciprocating motion of the impact ring to the variable resistance mechanism, ensuring the cooperative work of the two subsystems.

[0011] Preferably, one of the intermediate discs is fixedly mounted with a screw rod, the screw rod is slidingly connected to another intermediate disc, a nut is threadedly connected to the screw rod, and the nut is pressed against the intermediate disc.

[0012] Preferably, the two intermediate discs are respectively provided with same-direction pipes, a corrugated pipe is arranged between the two same-direction pipes, a baffle disc is arranged on the same-direction pipe away from the nut, and the same-direction pipes are slidingly connected to the screw rod.

[0013] Preferably, a damping ring is arranged on the telescopic frame, the damping ring is slidingly connected to the variable resistance pipe, and the minimum diameter of the damping ring is slightly larger than the diameter of the baffle disc.

[0014] Preferably, one side of the damping ring is provided with a resistance-reducing slope, and the resistance-reducing slope is located on one side of the nut.

[0015] (Three) beneficial effects Compared with the prior art, the electrical switch cabinet has the following beneficial effects: The technical advantage of the electrical switch cabinet lies in the self-cleaning vibration mechanism. When the filter layer is blocked due to accumulated dust, the entire filter assembly will move towards the motor under the action of wind force, which will drive the pre-compression of the vibration system and store energy. When the motor stops running, the stored elastic potential energy will be released, and vibration will be generated through the collision of the impact ring and the vibration ring, effectively shaking off the dust particles attached to the surface of the filter layer. This self-cleaning design ensures that the filter layer always maintains a high ventilation rate, avoiding the problem of reduced heat dissipation efficiency caused by filter layer blockage in traditional equipment, thereby improving the operation reliability and service life of the entire system. It is particularly worth mentioning that this dust removal process only needs to temporarily stop the operation of the fan and can be automatically completed without additional manual intervention, greatly reducing maintenance costs and downtime.

[0016] The control of the ash cleaning process is realized through the hydraulic buffer principle. The variable resistance tube is filled with hydraulic oil. When the damping ring passes the baffle, a hydraulic oil return channel is formed. This design makes the release of impact force show the characteristics of "slow at first and then fast". In the initial stage, the hydraulic resistance ensures that the filter layer can first complete the reset action. Then, when the damping ring completely passes the baffle, the system resistance drops sharply, releasing the impact force to vibrate the filter layer to clean the ash. This mechanical sequence control avoids the problem of "poor cleaning effect caused by unstable filter layer position" in the traditional vibration cleaning method, ensuring that each cleaning process can achieve the best effect. The system is also equipped with an adjustable trigger position control mechanism. By adjusting the distance between the nut and the screw rod, the timing of the ash cleaning trigger can be controlled to adapt to the optimal cleaning strategy in different dust concentration environments.

[0017] From the overall application point of view, this high-protection electrical switchgear solves the technical problems of the filtering and heat dissipation system, bringing improvement to the safety of industrial electricity. First, the automatic ash cleaning function prolongs the maintenance period, reduces the need for frequent shutdown and filter cleaning of traditional equipment, and improves the continuity of equipment operation and production efficiency. Second, since the filter layer always maintains good ventilation, the internal temperature control of the switchgear is more stable, effectively avoiding performance degradation and shortening of the life of electrical components due to overheating, reducing equipment failure rate and safety hazards. Third, the full automation of the ash cleaning process reduces the technical threshold and labor cost of maintenance, making the equipment suitable for various industrial environments, including remote sites or dangerous areas where personnel cannot frequently reach. In addition, the adjustable ash cleaning trigger mechanism allows the equipment to adapt to various working environments from light dust to high pollution, greatly expanding the application range of the product. In summary, this innovative design provides an economic and efficient solution for the long-term stable operation of high-protection electrical equipment, and has important significance for improving the overall safety and reliability of industrial power systems. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the overall structure schematic diagram of a high-protection electrical switchgear in the present application; Figure 2 is the structure schematic diagram of the connecting pipe and the expanding pipe in the present application; Figure 3 is the cross-sectional structure schematic diagram of the expanding pipe and the connecting pipe in the present application; Figure 4 is the cross-sectional structure schematic diagram of the expanding pipe and the follow-up frame in the present application; Figure 5 is the cross-sectional structure schematic diagram of the expanding pipe and the impact ring in the present application; Figure 6 is the structure schematic diagram of the variable resistance tube in the present application; Figure 7It is a sectional structure schematic view of the variable resistance tube in the application; Figure 8 It is a structure schematic view of the damping ring in the application; Figure 9 It is a structure schematic view of the follow-up frame in the application.

[0019] In the figure: 11, box; 12, cabinet door; 13, motor; 14, positioning disc; 15, blade; 16, air outlet disc; 21, connecting pipe; 22, expansion pipe; 23, sliding sleeve; 24, filter layer; 25, follow-up frame; 26, shock ring; 27, fixed frame; 28, guide sleeve; 29, guide rod; 31, variable resistance tube; 32, telescopic frame; 33, telescopic ring; 34, linkage frame; 35, compensation ring; 36, intermediate disc; 37, screw; 38, nut; 39, same direction pipe; 210, impact ring; 211, impact spring; 212, fixed ring; 213, reset spring; 310, bellows; 311, baffle disc; 312, damping ring; 313, resistance reduction slope. DETAILED DESCRIPTION

[0020] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0021] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as that generally understood by those skilled in the art to which the present application belongs.

[0022] In the present application, unless otherwise specified, the directions such as "up, down" are generally directed to the directions shown in the drawings, or are directed to the vertical, perpendicular or gravity directions; similarly, for the convenience of understanding and description, "left, right" are generally directed to the left and right shown in the drawings; "inner, outer" refer to the inner and outer relative to the contour of each component itself, but the above directional words are not used to limit the present application.

[0023] Please refer to Figures 1 to 9The utility model provides an electrical switchgear with high protection, comprising a fixed box 11, a cabinet door 12 rotatably installed on the box 11, an air outlet disc 16 installed on the side wall of the box 11; further comprising a vibration mechanism, the vibration mechanism comprises a connecting pipe 21 communicated with the side wall of the box 11, an expansion pipe 22 installed on the connecting pipe 21, a sliding sleeve 23 slidably connected in the expansion pipe 22, a filter layer 24 installed on the sliding sleeve 23, a follow-up frame 25 threadedly connected in the sliding sleeve 23, a vibration ring 26 coaxially installed in the follow-up frame 25, a fixed frame 27 installed in the connecting pipe 21, a plurality of guide sleeves 28 equally spaced installed on the fixed frame 27, the vibration mechanism further comprising guide rods 29 slidably connected on the plurality of guide sleeves 28, and a plurality of impact rings 210 installed on the guide rods 29, the impact rings 210 and the vibration ring 26 are coaxially arranged, an impact spring 211 fixedly installed on the fixed frame 27, the other end of the impact spring 211 connected to the impact ring 210, the impact spring 211 inside the plurality of guide rods 29, a fixed ring 212 threadedly connected on the expansion pipe 22, a return spring 213 installed on the sliding sleeve 23, the return spring 213 abutting on the expansion pipe 22, a motor 13 coaxially arranged in the guide sleeve 28, a positioning disc 14 installed in the connecting pipe 21, the extension end of the motor 13 connected to the positioning disc 14, a plurality of blades 15 equally spaced installed on the side wall of the motor 13.

[0024] When the cabinet 11 is cooled, the motor 13 needs to be started to drive the rotation of the blade 15 to suck the air flow into the cabinet for cooling, and the dust is filtered by the filter layer 24, and then the cooled air flow is discharged through the air outlet disc. After a long time of operation, a large amount of dust will be attached to the filter layer 24, which will reduce the ventilation rate of the filter layer 24 and generate a large resistance. A part of the air flow for air suction will act on the filter layer 24, so that the filter layer 24 will move towards the motor 13. The sliding sleeve 23 slides along the expansion pipe 22, the shock ring 26 on the follow-up frame 25 will be in contact with the impact ring 210, so that the guide rod 29 slides backward along the guide sleeve 28, and the impact spring 211 is also compressed. As the resistance of the filter layer 24 becomes larger, the compression degree of the impact spring 211 becomes larger. Since the variable resistance pipe 31 is in a fixed state, the follow-up frame 25 will drive the telescopic frame 32 to slide in the variable resistance pipe 31. After the motor 13 stops rotating, the impact spring 211 will release the elastic force, so as to drive the telescopic frame 32 to be pushed out synchronously. Since the variable resistance pipe 31 is filled with hydraulic oil, the damping ring 312 will generate a large resistance when passing through the stop disc 311, so as to slow down the extension speed of the impact spring 211 in the initial state. At this time, the reset spring 213 is not affected, so as to drive the sliding sleeve 23 to reset, so that the sliding sleeve 23 is in contact with the fixed ring 212. After the damping ring 312 passes through the stop disc 311, there is no obstacle to continuously accelerate, so that the impact ring 210 collides with the shock ring 26, so that the dust on the filter layer 24 is shaken off, so as to ensure the dust removal process of the filter layer 24. The whole process only needs to stop the rotation of the blade 15 to complete the dust removal, which improves the convenience of dust removal.

[0025] The variable resistance mechanism comprises a variable resistance pipe 31 fixedly installed on the fixed frame 27, a telescopic frame 32 sealingly and slidably connected in the variable resistance pipe 31, telescopic rings 33 installed at two ends of the telescopic frame 32, a linkage frame 34 installed on the impact ring 210, the telescopic rings 33 connected to the linkage frame 34, compensation rings 35 installed at two sides of the variable resistance pipe 31, intermediate discs 36 installed in the compensation rings 35 respectively, a screw rod 37 fixedly installed on one of the intermediate discs 36 and slidably connected to the other intermediate disc 36, a nut 38 threadedly connected to the screw rod 37 and pressed on the intermediate disc 36, same direction pipes 39 installed on the two intermediate discs 36 respectively, a corrugated pipe 310 installed between the two same direction pipes 39, a stop disc 311 installed on the same direction pipe 39 away from the nut 38, the same direction pipe 39 slidably connected to the screw rod 37, a damping ring 312 installed on the telescopic frame 32 and slidably connected in the variable resistance pipe 31, the smallest diameter of the damping ring 312 slightly larger than the diameter of the stop disc 311, a resistance reducing slope 313 provided on one side of the damping ring 312, and the resistance reducing slope 313 on the side of the nut 38.

[0026] When the telescopic frame 32 telescopes back as the resistance of the filter layer 24 increases, the damping ring 312 also moves back, and when the damping ring 312 hits the stop disc 311 again, it needs to pull the telescopic frame 32 and the damping ring 312 outward, and when the damping ring 312 pulls back to pass the stop disc 311, the inner diameter of the damping ring 312 is slightly larger than the diameter of the stop disc 311, and the variable resistance tube 31 is filled with hydraulic oil, so the speed of the hydraulic oil backflow through the slight gap is slow, thus hindering the impact at the beginning, ensuring the first reset of the filter layer 24 and improving the dust removal effect.

[0027] Since whether the damping ring 312 and the stop disc 311 generate resistance is determined by whether the damping ring 312 passes the stop disc 311, the relative position of the damping ring 312 and the stop disc 311 adjusts the triggering position, and if the triggering is not reduced, the backstroke dust removal effect is reduced, and when the position between the damping ring 312 and the stop disc 311 needs to be adjusted, only the distance between the nut 38 and the screw rod 37 needs to be changed, and when the two are relatively close, the two intermediate discs 36 are brought close, at this time, the compensation ring 35 is expanded and the bellows 310 is contracted to compensate for its deformation, and then the position of the stop disc 311 relative to the damping ring 312 is changed, and the adjustment of the triggering position is completed, and the adjustment process is completed.

[0028] In all the schemes mentioned above, the connection between the two components can be selected according to the actual situation, such as welding, bolt and nut cooperation connection, bolt or screw connection or other known connection methods, which will not be described one by one, and the preferred connection is welding when it is mentioned in the above. Although the embodiments of the application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the application, and the scope of the application is defined by the appended claims and their equivalents.

Claims

1. A high-protection electrical switch cabinet, comprising a fixedly arranged cabinet (11), a cabinet door (12) being rotatably installed on the cabinet (11), and an air outlet disc (16) being installed on the side wall of the cabinet (11); characterized in that: The vibration mechanism further comprises guide rods (29) slidably connected to the guide sleeves (28), and impact rings (210) are mounted on the guide rods (29), wherein the impact rings (210) and the vibration rings (26) are coaxially arranged.

2. An electrical switchgear cabinet according to claim 1, characterised in that: The fixed frame (27) is fixedly provided with impact springs (211), one ends of the impact springs (211) are connected to the impact rings (210), and the impact springs (211) are arranged inside the guide rods (29).

3. An electrical switchgear cabinet according to claim 2, characterised in that: The enlarged pipes (22) are threadedly connected with fixed rings (212), the sliding sleeves (23) are provided with return springs (213) abutting against the enlarged pipes (22).

4. An electrical switchgear cabinet according to claim 3, characterised in that: The guide sleeves (28) are coaxially provided with motors (13), the connecting pipes (21) are provided with positioning discs (14), the motors (13) are connected to the positioning discs (14) by protruding ends, and the motors (13) are provided with a plurality of blades (15) at equal intervals on side walls.

5. A switchgear cabinet according to claim 1, characterized in that: The variable resistance mechanism further comprises linkage frames (34) mounted on the impact rings (210), the telescopic rings (33) are connected to the linkage frames (34), the variable resistance pipes (31) are respectively provided with compensation rings (35) on two sides, and each compensation ring (35) is respectively provided with an intermediate disc (36).

6. A switchgear cabinet according to claim 2, characterized in that: One of the intermediate discs (36) is fixedly provided with a screw rod (37) slidably connected to another intermediate disc (36), the screw rod (37) is threadedly connected with a nut (38) pressing the intermediate disc (36).

7. An electrical switchgear cabinet according to claim 6, characterised in that: The two intermediate discs (36) are respectively provided with same direction pipes (39), a corrugated pipe (310) is arranged between the two same direction pipes (39), a blocking disc (311) is arranged on the same direction pipe (39) away from the nut (38), and the same direction pipes (39) are slidably connected to the screw rod (37).

8. An electrical switchgear cabinet according to claim 7, characterised in that: The telescopic rods (32) are provided with damping rings (312) slidably connected to the variable resistance pipes (31), and the smallest diameter of the damping rings (312) is slightly larger than the diameter of the blocking disc (311).

9. An electrical switchgear cabinet according to claim 8, characterised in that: ​ 10. An electrical switchgear cabinet according to claim 9, characterised in that: One side of the damping ring (312) is provided with a drag reduction slope (313), and the drag reduction slope (313) is located at one side of the nut (38).

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