A drag type mobile protection assembly and high and low voltage complete equipment thereof

Abstract

This invention belongs to the field of power equipment technology, and particularly relates to a towable mobile protective assembly, comprising: a base with lifting lugs on its side walls and a set of wheels on its bottom; a protective box mounted on the base; and an internal circulation mechanism housed within the protective box for internal air circulation and heat dissipation of the high and low voltage switchgear. The base has a hollow structure, and a lightweight support unit is installed inside. This internal circulation heat dissipation mode prevents external air from directly entering the equipment, effectively preventing contamination from dust, moisture, and other impurities. The lightweight support unit of the base effectively reduces the burden of movement.

Description

Technical Field

[0001] This invention belongs to the field of power equipment technology, and particularly relates to a towable mobile protection component and its high and low voltage complete set of equipment. Background Technology

[0002] High and low voltage switchgear is a common type of power equipment in the power industry. Depending on different construction or usage requirements, high and low voltage switchgear can be installed in fixed positions or moved. A towable mobile protective assembly is a device used when high and low voltage switchgear is installed in a mobile manner. It generally consists of a base and a protective box. The base is equipped with a lifting structure or a moving wheel structure to facilitate the transfer of the high and low voltage switchgear. For example, a mobile high and low voltage switchgear with protective and shock-absorbing functions disclosed in patent application number CN202111628010.6 includes a switchgear body, a buffer seat fixed to the top of the base by bolts, the switchgear body located above the base and slidably connected to the buffer seat; the buffer seat contains a friction buffer assembly and a drive buffer assembly, rollers are rotatably mounted on a fixed shaft, and a clamping anti-rotation assembly is installed on the base. In the use of existing towable mobile protective components and high and low voltage switchgear, the heat dissipation of the high and low voltage switchgear usually adopts an external circulation mode. During the heat dissipation process, dust and impurities from the outside air are easily introduced, causing contamination of the internal structure of the high and low voltage switchgear. At the same time, due to the combined weight of the base and the high and low voltage switchgear, the moving burden increases during towing. Especially when dealing with large high and low voltage switchgear, the traditional solid base or hollow thick-walled structure will greatly increase the moving burden. Therefore, it is necessary to make improvements. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned technical problems by providing a towable mobile protective component and its high and low voltage complete set of equipment, so as to effectively reduce the impact of dust and impurities in the external air on the high and low voltage complete set of equipment and reduce the moving burden of the high and low voltage complete set of equipment.

[0004] In view of this, the present invention provides a draggable moving protective component, comprising: The base has lifting lugs on its side walls and a set of casters on its bottom. The protective box is mounted on the base; Also includes: An internal circulation mechanism is installed inside the protective box and is used to circulate and dissipate heat from the air inside the high and low voltage complete set of equipment. The base has a hollow structure and a lightweight support unit is installed inside the base.

[0005] In this technical solution, the internal circulation heat dissipation mode avoids external air from directly entering the device, effectively preventing contamination from dust, moisture and other impurities. The lightweight support unit of the base can effectively reduce the burden of movement.

[0006] In the above technical solution, the internal circulation mechanism further includes: An internal circulation air duct, comprising an exhaust pipe section, a heat dissipation pipe section, and an exhaust pipe section; A heat dissipation unit is disposed on the outside of the heat dissipation pipe section to absorb the heat dissipated by the heat dissipation pipe section; The two ends of the heat dissipation pipe are connected to the exhaust pipe and the heat dissipation pipe respectively, and the internal circulation air pipe is connected to the inside of the high and low pressure complete set of equipment through the exhaust pipe and the heat dissipation pipe.

[0007] In the above technical solution, the extraction pipe further includes: The main body is shaped like a tuning fork. The two pipe sections located at the fork arm are the air intake end, and the pipe section located at the fork handle is the air outlet end. An exhaust fan is installed in the two exhaust ends of the main body; A filter unit is disposed in the two exhaust ends of the main body and located downstream of the exhaust fan. The filter unit is used to filter the air entering the main body, and the two air extraction ends of the main body can operate alternately.

[0008] In the above technical solution, the filtering unit further includes: A ball valve core is disposed in the exhaust end of the main body and located downstream of the exhaust fan. A filter element is disposed in the through hole of the ball valve core. A valve core drive component is disposed below the air extraction end of the main pipe body and is used to drive the ball valve core to rotate. Ash discharge branch pipe, wherein the ash discharge branch pipe and the air extraction end of the main body are distributed in a cross shape and are connected to the air extraction end of the main body at the intersection point; The main body has a valve seat in the exhaust end that matches the ball valve core. The air inlet of the ash discharge branch pipe is connected to the exhaust end of the main body and is located between the ball valve core and the exhaust fan. The exhaust end of the ash discharge branch pipe extends to the outside of the protective box. When the ball valve core opens the exhaust end, the ash discharge branch pipe is in a closed state. When the ball valve core closes the exhaust end, the ash discharge branch pipe is in an open state.

[0009] In the above technical solution, the base further includes: A base plate, comprising an upper base plate and a lower base plate; The lightweight support unit is fixedly installed between the upper base plate and the lower base plate.

[0010] In the above technical solution, the lightweight support unit further includes: The outer frame has the same outline as the base plate and is fixedly installed between the upper base plate and the lower base plate. The support portion has a centrally radiating mesh structure, and the arrangement density and wall thickness of the support portion change in a gradient from the center to the edge.

[0011] In the above technical solution, the support portion further includes: A central column, wherein the central column is located at the center point of the outer frame; Several straight plates extend radially from the center point to the inner wall of the outer frame. The inner end of each straight plate is connected to the outer wall of the central column, and the other end is connected to the inner wall of the outer frame. A hexagonal support plate assembly, comprising an inner plate assembly, a middle plate assembly, and an outer plate assembly concentrically distributed from the inside out around a central column; The inner plate group is composed of several concentrically distributed inner support plates, the middle plate group is composed of several concentrically distributed middle support plates, and the outer plate group is composed of several concentrically distributed outer support plates. The arrangement density of the inner plate group, the middle plate group, and the outer plate group decreases sequentially, and the wall thickness of the inner support plate, the middle support plate, and the outer support plate increases sequentially.

[0012] Furthermore, the above technical solution also includes: Hexagonal through holes, wherein there are a plurality of hexagonal through holes and they are evenly distributed on the intermediate support plate and the outer support plate of the intermediate plate group and the outer plate group, and the hexagonal through holes are distributed through the wall thickness direction of the intermediate support plate and the outer support plate; The reinforcing rods are arranged in a radial pattern with the center of the hexagonal through hole as the radial center. The reinforcing rods are hexagonal hollow rods, with the outer ends of the six reinforcing rods connected to the six sides of the hexagonal through hole, and the inner ends connected to each other through the central block.

[0013] Furthermore, the above technical solution also discloses a high and low voltage complete set of equipment including a drag-type mobile protective component, wherein the high and low voltage complete set of equipment is installed in a protective box.

[0014] The beneficial effects of this invention are: 1. High heat dissipation efficiency and no pollution, strong continuous operation capability: The internal circulation heat dissipation mode avoids the direct entry of external air into the equipment, effectively preventing dust, water vapor and other impurities from contaminating the internal components of the equipment, ensuring the insulation performance and service life of the equipment; at the same time, through the alternating operation of the two air extraction ends and the coordinated action of the ball valve core and ash discharge branch pipe, the filter element can be backwashed and cleaned online without stopping the machine, ensuring the continuous and stable operation of the internal circulation mechanism, extending the maintenance cycle, reducing maintenance costs, and greatly improving the operating efficiency.

[0015] 2. Balancing lightweight design with robust support performance and high mobility: The lightweight support unit of the base adopts a gradient mesh structure and a "plate-rod" composite design, which significantly reduces weight compared to traditional solid bases, effectively reducing the burden of movement. At the same time, the gradient arrangement density and wall thickness design allow the support unit to adapt to the spatial distribution characteristics of vibration excitation. The central area enhances specific stiffness, while the edge area ensures support strength. Under random vibration conditions, the first-order characteristic frequency is higher than 30Hz, avoiding resonance and meeting the support and protection requirements during movement. This improves mobility and adapts to diverse movement scenarios.

[0016] 3. High structural integration and small footprint: The internal circulation mechanism integrates heat dissipation, filtration, and automatic cleaning functions. The tuning fork-shaped structure of the exhaust pipe, along with the ball valve core and ash discharge branch pipe, ensures close cooperation among the functional components, reducing the space occupied compared to traditional independent structures and further improving the lightweight design. The integrated design of the lightweight support unit and the base further simplifies the overall structure, reduces the volume, and facilitates movement and arrangement in confined spaces. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a specific embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the internal structure of the protective box of the present invention.

[0020] Figure 3 This is a schematic diagram of the internal circulation duct structure of the present invention.

[0021] Figure 4 This is a schematic diagram of the main body structure of the present invention.

[0022] Figure 5This is a schematic diagram of the base structure of the present invention.

[0023] Figure 6 This is a schematic diagram of the lightweight support unit structure of the present invention.

[0024] Figure 7 This is a schematic diagram of the reinforcing rod structure of the present invention.

[0025] Figure 8 This is a schematic cross-sectional view of the reinforcing rod of the present invention.

[0026] The markings in the diagram are as follows: 1. Base; 11. Upper base plate; 12. Lower base plate; 13. Lightweight support unit; 131. Outer frame; 132. Central column; 133. Straight plate; 134. Inner support plate; 135. Middle support plate; 136. Outer support plate; 137. Hexagonal through hole; 138. Reinforcing rod; 139. Central block; 14. Lifting lug; 15. Moving wheel set; 2. Protective box; 21. Opening and closing door; 3. Internal circulation mechanism; 31. Exhaust pipe section; 311. Main pipe body; 3110. Exhaust end; 312. Exhaust fan; 32. Heat dissipation pipe section; 33. Exhaust pipe section; 34. Heat dissipation unit; 35. Filter unit; 351. Ball valve core; 352. Filter element; 353. Valve core drive component; 354. Ash discharge branch pipe; 356. Valve seat; 4. High and low pressure complete set of equipment. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0029] A draggable mobile protective component in this embodiment includes a base 1, a protective box 2, and an internal circulation mechanism 3, wherein: Base 1 The base 1 has a hollow rectangular structure, and its length and width are designed to fit the dimensions of the high and low voltage switchgear 4. Its height is 150-200mm, ensuring sufficient installation space for the internal support structure while preventing an excessively high center of gravity from affecting stability during movement. The base 1 includes a base plate and a lightweight support unit 13, with the specific structure as follows: Base plate: Composed of an upper base plate 11 and a lower base plate 12, both made of conventional steel plates with a thickness of 5-8mm to ensure structural strength and load-bearing capacity. The upper surface of the upper base plate 11 has several mounting holes for bolt-fixed connection to the bottom of the protective box 2, ensuring reliable connection. The lower surface of the lower base plate 12 has mounting slots for the movable wheel sets 15 at its four corners. The movable wheel sets 15 are bolt-fixed into the mounting slots, ensuring the stability of the movable wheel sets 15 during installation.

[0030] Lightweight support unit 13: Fixedly installed between the upper base plate 11 and the lower base plate 12, it is the core structure for achieving a balance between lightweight and support performance in the base 1. It includes an outer frame 131, a support part, a hexagonal through hole 137, and a reinforcing rod 138, as detailed below: The outer frame 131 is made of aluminum alloy profile with a thickness of 8-10mm. Its outline is completely consistent with the outline of the base plate. The upper and lower edges of the outer frame 131 are welded to the lower surface of the upper base plate 11 and the upper surface of the lower base plate 12, respectively, resulting in a firm connection and good sealing. The welding between the outer frame 131 and the upper and lower base plates 12 can be carried out using argon arc welding to ensure welding strength and weld quality. The side walls of the outer frame 131 can be directly used as the side walls of the base plate, or conventional steel plates can be welded around the upper and lower bottom edges to form the side walls of the base plate. The specific choice can be made according to actual processing requirements, and this application does not impose specific limitations. The inner side wall of the outer frame 131 can be provided with evenly distributed connecting grooves for fixed connection with the support part to ensure the installation stability of the support part.

[0031] Support section: It features a centrally radiating mesh structure with a gradient change in density and wall thickness from the center to the edges. It includes a central column 132, several straight plates 133, and hexagonal support plate assemblies. The height of each component is equal to the distance between the upper base plate 11 and the lower base plate 12, ensuring that each component can fully perform its supporting function. The central column 132 is an aluminum alloy cylinder with a diameter of 10-15mm, located at the geometric center of the outer frame 131, and fixedly connected to the upper base plate 11 by welding, forming the core fixing point of the support section. Several straight plates 133 are made of aluminum alloy plates with a thickness of 2-3mm, extending radially from the central column 132 to the inner wall of the outer frame 131. The inner ends of the straight plates 133 are fixed to the outer wall of the central column 132 by welding, and the outer ends can be embedded in the connecting grooves on the inner sidewall of the outer frame 131 and fixed by welding. There are 8-12 straight plates 133, evenly distributed around the central column 132, forming the main support skeleton of the support section and ensuring the stability of the support structure. The central column 132 is connected to the straight plate 133, and the straight plate 133 is connected to the subsequent inner support plate 134, intermediate support plate 135 and outer support plate 136 by welding. The welding process adopts argon arc welding to ensure the connection strength and avoid loosening or breakage of the connection under stress.

[0032] Hexagonal support plate assembly: including inner plate assembly, middle plate assembly and outer plate assembly concentrically distributed from the inside to the outside with the central column 132 as the center point, all made of aluminum alloy plate, with good strength and lightweight characteristics. The inner panel assembly consists of 3-5 concentrically distributed inner support plates 134, each with a side length of 50-80 mm and a wall thickness of 0.8-1 mm. The distance between adjacent inner support plates 134 is 10-15 mm. The middle panel assembly consists of 4-6 concentrically distributed middle support plates 135, each with a side length of 100-150 mm and a wall thickness of 1.2-1.5 mm. The distance between adjacent middle support plates 135 is 20-25 mm. The outer panel assembly consists of 2-4 concentrically distributed outer support plates 136, each with a side length of 200-300 mm and a wall thickness of 1.8-2 mm. The distance between adjacent outer support plates 136 is 30-35 mm. The inner support plate 134, the intermediate support plate 135, and the outer support plate 136 are all fixedly connected to the straight plate 133 by welding. Their arrangement density decreases from the inside to the outside, while their wall thickness increases from the inside to the outside, forming a gradient stiffness structure adapted to the vibration excitation distribution. The vibration excitation is greatest in the central area, and the specific stiffness is enhanced by the dense thin-walled structure, effectively suppressing vibration displacement. The vibration excitation is smaller in the edge area, and the support strength is ensured by the sparse thick-walled structure, while reducing redundant mass, achieving a balance between lightweight and vibration resistance. By using a centrally radiating mesh structure for the support part, with the arrangement density and wall thickness varying gradually from the center to the edge, the lightweighting of the base 1 is improved while maintaining the support performance of the base 1. Furthermore, the structure of the support part can significantly reduce the amount of material used in non-critical load-bearing areas while ensuring support performance. At the same time, the structural design of the support part can also adapt to the vibration excitation characteristics during the movement of the towed mobile protective components and the high and low voltage complete equipment 4, and transfer the concentrated load along the divergent direction to the edge support points, improving load transfer efficiency.

[0033] Hexagonal through holes 137 and reinforcing rods 138: There are several hexagonal through holes 137, which are evenly distributed on the intermediate support plate 135 and the outer support plate 136 of the intermediate plate group and the outer plate group. They are distributed through the support plate along the wall thickness direction. The side length of the hexagonal through holes 137 is 30-50mm. There are six reinforcing rods 138 corresponding to the number of sides of the hexagonal through holes 137. They all adopt a hexagonal hollow rod structure and are made of aluminum alloy. The six reinforcing rods 138 are radially distributed with the center of the hexagonal through hole 137 as the radial center. The outer ends are respectively welded to the six sides of the hexagonal through hole 137, and the inner ends are connected to each other through the welding center block 139. The connection is firm and the force is evenly distributed. By arranging the hexagonal through holes 137 and reinforcing rods 138, the single wall structure of the intermediate support plate 135 and the outer support plate 136 can be effectively changed, the buckling resistance of the intermediate support plate 135 and the outer support plate 136 can be improved, the structural strength can be avoided due to the reduction in density, the mechanical properties of the support unit can be further optimized, and the lightweighting can also be further improved.

[0034] The base 1 has lifting lugs 14 on its side walls. Both the lifting lugs 14 and the caster wheels 15 are conventional structures. The lifting lugs 14 can be fixed to the side walls of the base 1 by welding to ensure uniform force distribution and reliable connection during lifting. The lifting lugs 14 are made of 10-12mm thick steel plates, and there are four of them, which are welded to the center of the four side walls of the base 1. The lifting lugs 14 have lifting holes with a diameter of 20-25mm for lifting and transporting components, facilitating position adjustment in construction sites and other environments. The bottom of the base 1 has caster wheels 15. The caster wheels 15 can be several universal wheels with locking structures, or rotating wheels with telescopic or folding storage structures that can be stored in the base 1. This application will not elaborate on these details. The number of movable wheel sets 15 is 4, which are installed in the mounting slots at the four corners of the lower base plate 12. If universal wheels with locking structure are used, their load-bearing capacity is not less than 500kg. The wheel surface is made of wear-resistant rubber material, which effectively absorbs slight vibrations during movement. At the same time, the locking structure can achieve reliable positioning when the component is fixed to prevent accidental movement. If rotating wheels with telescopic or folding storage structure are used, the rotating wheels can be stored inside the base 1 when the component is fixed to avoid long-term exposure and damage to the rotating wheels, while improving the stability when the component is fixed.

[0035] Protective Box 2 The protective box 2 is mounted on the upper base plate 11 of the base 1 and is fixedly connected to the upper base plate 11 by bolts through the mounting holes, ensuring a secure connection and easy disassembly. The protective box 2 can be a square box made of stainless steel plate with a thickness of 3-5mm, providing excellent dustproof, waterproof, and impact-resistant performance, effectively protecting the internal high and low voltage switchgear 4 from damage by the external environment. The protective box 2 has space inside for the arrangement and installation of the high and low voltage switchgear 4, and has an equipment mounting base at the bottom, which is fixedly connected to the upper base plate 11 by bolts for positioning and installation of the high and low voltage switchgear 4, ensuring the stability of the equipment during movement.

[0036] Ventilation holes are provided on the side wall of the protective box 2, and dust screens are installed inside the ventilation holes to facilitate air exchange between the inside of the protective box 2 and the external environment, while preventing dust from entering. The protective box 2 has a conventional door 21 for opening the internal space of the protective box 2. The door 21 is connected to the side wall of the protective box 2 by a hinge. The inner side of the door 21 is provided with a sealing strip to ensure the airtightness after closing and prevent dust, moisture and other impurities from entering. The outer side of the door 21 is provided with a handle and a lock for easy opening and locking, and to facilitate the operation and maintenance of the internal equipment.

[0037] Internal circulation mechanism 3 The internal circulation mechanism 3 is installed inside the protective box 2 and is used for internal circulation, heat dissipation, filtration and purification of the air inside the high and low pressure complete equipment 4. It includes an internal circulation duct, a heat dissipation unit 34, a filter unit 35 and a control unit, and the specific structure is as follows: Internal circulation ductwork: comprising exhaust duct section 31, heat dissipation duct section 32, and exhaust duct section 33, all made of stainless steel, possessing excellent corrosion resistance and structural strength, capable of adapting to long-term internal circulation airflow environments. The connection methods between the duct sections are flexible; exhaust duct section 31, heat dissipation duct section 32, and exhaust duct section 33 can be connected by welding or conventional flange structures. Welded connections offer a compact structure and good sealing, while flange connections facilitate installation and disassembly, allowing selection based on actual usage requirements.

[0038] The exhaust pipe section 31 includes a main pipe body 311 and an exhaust fan 312. The main pipe body 311 is shaped like a tuning fork and is welded together from one main pipe and two branch pipes, forming a "Y"-shaped structure. The two pipe sections located at the fork arm are the exhaust ends 3110, with a pipe diameter of 100-150mm. The pipe section located at the fork handle is the exhaust end, with a pipe diameter of 150-200mm. The exhaust end is connected to one end of the heat dissipation pipe section 32 via a flange or welding. The two exhaust ends 3110 of the main pipe body 311 extend to both sides of the high and low pressure complete set of equipment 4. The pipe openings are fixedly connected to the ventilation openings of the equipment via sealing flanges to ensure airflow sealing and prevent leakage from affecting the internal circulation efficiency. The two exhaust ends 3110 of the main pipe body 311 can be divided into several sections, which are connected to each other by a conventional flange structure, facilitating the installation and disassembly of the exhaust fan 312 and filter unit 35 in the exhaust ends 3110 of the main pipe body 311, and making it convenient for later maintenance and replacement.

[0039] Heat dissipation tube section 32: This is a conventional heat dissipation coil structure, made of seamless stainless steel tubing with a wall thickness of 2-3mm, ensuring both sufficient heat dissipation area and structural strength. The heat dissipation coil has a diameter of 200-300mm and a length of 500-800mm. Its spiral or curved arrangement increases the heat dissipation area and improves heat dissipation efficiency, allowing for thorough heat dissipation during airflow within the tube.

[0040] Exhaust pipe section 33: This is a conventional pipe-like structure. The diameter of the pipe opening matches the outlet diameter of the heat dissipation pipe section 32. One end is connected to the outlet of the heat dissipation pipe section 32 via a flange or welding, and the other end extends to the top of the high and low pressure switchgear 4, where it is fixedly connected to the equipment's ventilation port via a sealing flange. This allows the cooled air to be returned to the equipment, completing one internal circulation cycle. The arrangement of the exhaust pipe section 33 must avoid interference with other structures to ensure smooth airflow.

[0041] Heat dissipation unit 34: disposed on the outside of heat dissipation pipe 32, used to absorb the heat dissipated by heat dissipation pipe 32 and transfer it to the external environment. Heat dissipation unit 34 can be a conventional liquid cooling heat dissipation unit 34 or air cooling heat dissipation unit 34. The present invention does not make a specific limitation on this and can select according to the heat dissipation requirements of the application scenario. Heat dissipation unit 34 is arranged on the outside of protective box 2, and the corresponding heat dissipation pipe 32 also extends to the outside of protective box 2.

[0042] If an air-cooled heat dissipation unit 34 is used, it has several heat dissipation fins arranged on the outer surface of the heat dissipation pipe section 32. The heat dissipation fins are made of corrugated aluminum and are tightly bonded to the outer surface of the heat dissipation pipe section 32 by brazing. The fin spacing is 5-8mm, which effectively increases the heat dissipation area. The heat dissipation unit 34 can be passively cooled by external airflow, which is suitable for scenarios with low heat dissipation requirements. Alternatively, blowers can be installed to supply air to the heat dissipation unit 34 for active air cooling. Two blowers are set on one side of the heat dissipation fins, arranged symmetrically, and fixedly connected to the inner wall of the protective box 2 by brackets. The air outlet of the blower faces the heat dissipation fins. After starting, it generates airflow parallel to the fins, which accelerates heat dissipation and is suitable for scenarios with high heat dissipation requirements.

[0043] If a liquid-cooled heat dissipation unit 34 is used, it includes a cooling coil, a coolant tank, a circulation pump, and a radiator. The cooling coil is tightly attached to the outer surface of the heat dissipation pipe section 32 and is connected to the coolant tank, circulation pump, and radiator through pipes to form a closed loop. The coolant tank contains a coolant such as an ethylene glycol aqueous solution. The circulation pump drives the coolant to circulate in the loop to absorb the heat from the heat dissipation pipe section 32. The radiator is set outside the protective box 2 and accelerates the heat dissipation of the coolant through a fan. It is suitable for scenarios with extremely high requirements for heat dissipation efficiency.

[0044] Filter unit 35: Located in the two air extraction ends 3110 of the main pipe 311, downstream of the exhaust fan 312, it is used to filter the air entering the main pipe 311 and has an automatic cleaning function. It includes a ball valve core 351, a valve core drive component 353, a dust discharge branch pipe 354, and a sensor, as detailed below: Ball valve core 351 and valve seat 356: The ball valve core 351 is located in the exhaust end 3110 of the main pipe body 311, downstream of the exhaust fan 312. It includes a spherical ball made of stainless steel, the diameter of which matches the inner diameter of the exhaust end 3110 of the main pipe body 311. A through hole with a diameter of 80-120mm is opened in the middle of the ball. The filter element 352 can be a high-efficiency filter element (such as a HEPA H13 filter element) with a filtration efficiency of not less than 99.97%. It is fixedly installed in the through hole of the ball valve core 351 through a conventional mounting bracket structure and bolt structure. The two ends of the filter element 352 are tightly fitted to the inner wall of the through hole of the ball, ensuring that all airflow passes through the filter element 352, thereby improving the filtration effect. The valve seat 356 is arranged on the inner wall of the air extraction end 3110 of the main body 311. The valve seat 356 is a conventional structure that seals the surface of the ball valve core 351. The inner side is provided with a wear-resistant sealing gasket, which fits tightly with the surface of the ball valve core 351 to ensure sealing performance and prevent air leakage.

[0045] Valve core drive 353: Located below the air extraction end 3110 of the main pipe body 311, it drives the ball valve core 351 to rotate. The valve core drive 353 can be a conventional drive motor (such as a stepper motor), which is fixedly connected to the bottom of the protective box 2 via a bracket. The output shaft of the valve core drive 353 is connected to a transmission shaft via a coupling. The upper end of the transmission shaft extends into the air extraction end 3110 of the main pipe body 311 and is fixedly connected to the bottom of the ball valve core 351. The ball valve core 351 is rotated 90° by the forward and reverse rotation of the drive motor, thereby controlling the opening and closing of the air extraction end 3110. When the through hole of the ball valve core 351 coincides with the axis of the main pipe body 311, the air extraction end 3110 is open; when the solid part of the ball valve core 351 is in contact with the valve seat 356, the air extraction end 3110 is closed. The opening and closing action is precise and reliable.

[0046] Ash discharge branch pipe 354: It is arranged in a cross shape with the exhaust end 3110 of the main body 311, forming a cross-shaped four-way pipe structure. The ash discharge branch pipe 354 is made of stainless steel pipe with a diameter of 50-80mm. Its air inlet end is connected to the exhaust end 3110 of the main body 311 and is located between the ball valve core 351 and the exhaust fan 312. The exhaust end extends to the outside of the protective box 2. The pipe opening faces downward and is equipped with a dust cover to prevent external dust from entering. The ball valve core 351 is located at the intersection of the suction end 3110 and the ash discharge branch pipe 354. The rotation of the ball valve core 351 realizes the alternating opening and closing of the suction end 3110 and the ash discharge branch pipe 354. When the ball valve core 351 opens the suction end 3110, the solid part of the ball blocks the air inlet of the ash discharge branch pipe 354, and the ash discharge branch pipe 354 is in the closed state. When the ball valve core 351 closes the suction end 3110, the through hole of the ball coincides with the air inlet of the ash discharge branch pipe 354, and the ash discharge branch pipe 354 is in the open state. The structure is compact and has good coordination.

[0047] Sensor: Used to sense the blockage status of filter element 352. The sensor can be a conventional wind pressure, wind speed, or differential pressure sensor, and its specific placement location is selected according to the sensor type, such as inside the suction end 3110, inside and outside the suction end 3110, or upstream or downstream of the filter element 352. This application does not make specific limitations. The sensor is electrically connected to the control unit and can monitor the working status of filter element 352 in real time. When blockage of filter element 352 is detected, a signal is promptly sent to the control unit to trigger the alternating operation and cleaning process of suction end 3110.

[0048] Control Unit: The internal circulation mechanism 3 also includes a conventional control unit (such as a PLC control unit or DCS control unit), which is installed in a control box inside the protective enclosure 2. The control unit is used to control the operation of the exhaust fan 312 and the filter unit 35, and can also control the operating status of the heat dissipation unit 34 (such as the start and stop of the blower, the start and stop of the liquid cooling circulation pump, etc.). The control panel of the control unit is located on the outside of the protective enclosure 2, which is convenient for operators to set parameters and perform manual control. The control panel is equipped with conventional controls such as a power switch, running status indicator lights, and parameter adjustment buttons.

[0049] Working process of internal circulation mechanism 3 The internal circulation mechanism 3's workflow includes a normal operation mode and a filter element 352 cleaning mode, which are automatically controlled by a control unit, as detailed below: Normal operating mode: During operation, in the initial state, the ball valve core 351 in one suction end 3110 is in the closed state, and the ball valve core 351 in the other suction end 3110 is in the open state. The control unit activates the exhaust fan 312 in the open exhaust end 3110, and simultaneously activates the heat dissipation unit 34 according to heat dissipation requirements (the blower does not need to be activated in passive air-cooling mode). Air in the high and low pressure switchgear 4 is drawn into the main pipe 311 under the negative pressure of the exhaust fan 312. As the air flows through the filter element 352, dust and impurities in the air are trapped by the filter element 352, achieving air purification. Then, the purified hot air enters the heat dissipation pipe section 32 through the exhaust end of the main pipe 311. The heat generated by the operation of the high and low pressure switchgear 4 in the air is radiated to the heat dissipation unit 34 through the heat dissipation pipe section 32, and finally dissipated into the external environment through the heat dissipation unit 34. Subsequently, the cooled air returns to the interior of the high and low pressure switchgear 4 through the exhaust pipe section 33, completing one internal circulation cycle. During normal operation, the control unit receives sensor detection signals in real time to monitor the blockage of the filter element 352.

[0050] Filter cartridge 352 cleaning mode: The alternating operation of the two suction ends 3110 can be set to alternate at a fixed time by the control unit, or the two suction ends 3110 can be controlled to alternate by the sensor sensing the blockage of the filter cartridge 352. The two control methods can be selected through the control panel.

[0051] If a fixed-time alternation method is adopted: after a fixed time (such as 1-24 hours) is set by the control unit, the control unit automatically starts the alternation process, controls the ball valve core 351 in the currently running exhaust end 3110 to rotate to close the exhaust end 3110, and at the same time controls the ball valve core 351 in the other exhaust end 3110 to rotate to open the exhaust end 3110, and controls the corresponding exhaust fan 312 to run. At this time, the two exhaust ends 3110 alternate, and the newly opened exhaust end 3110 continues to maintain internal circulation operation to ensure the continuity of heat dissipation.

[0052] If the sensor-sensing alternation method is adopted: when the sensor detects that the filter element 352 in the currently operating exhaust end 3110 is blocked (such as when the pressure difference reaches the set threshold of 0.5-1kPa), the sensor sends a signal to the control unit. The control unit starts the alternation process, controls the ball valve core 351 in the currently operating exhaust end 3110 to rotate to close the exhaust end 3110, and at the same time controls the ball valve core 351 in the other exhaust end 3110 to rotate to open the exhaust end 3110, and controls the corresponding exhaust fan 312 to run, so as to realize the alternation of the two exhaust ends 3110.

[0053] After the two exhaust ports 3110 alternate, the control unit controls the exhaust fan 312 at the closed exhaust port 3110 to continue running for a certain period of time (e.g., 1-2 minutes). At this time, in the closed exhaust port 3110, the ball valve core 351 opens the ash discharge branch pipe 354, and the ball valve core 351 faces the filter surface of the filter element 352 (i.e., the side with dust and impurities attached) toward the discharge end of the ash discharge branch pipe 354. The air drawn in by the exhaust fan 312 in this exhaust port 3110 is discharged to the external environment through the ash discharge branch pipe 354. During the discharge process, the air backwashes and cleans the filter element 352, discharging the dust and impurities on the filter surface of the filter element 352 to the external environment. After cleaning is completed, the control unit controls the exhaust fan 312 in this exhaust port 3110 to stop running, and this exhaust port 3110 serves as a standby port waiting for the next alternation.

[0054] By designing the main body 311, the internal circulation mechanism 3 can maintain stable operation for a long time. While achieving opening and closing control, it can automatically clean the filter element 352 by changing the position of the ball valve core 351. The integration of its structure is effectively improved, reducing the installation space required for the internal circulation mechanism 3, thereby improving the lightweight nature of the towable mobile protection components and high and low pressure complete sets of equipment 4.

[0055] Installation and connection of various components The exhaust fan 312 is fixedly installed in the exhaust end 3110 through a conventional mounting base structure (such as an annular mounting base concentrically distributed with the exhaust end 3110 of the main body 311) and a bolt connection structure. The mounting base fits tightly against the inner wall of the exhaust end 3110 of the main body 311 and is fixedly connected by bolts to ensure the stability of the exhaust fan 312 during operation and avoid vibration and noise.

[0056] The outer frame 131 is connected to the upper and lower base plates 12 by welding. During welding, it is necessary to ensure that the weld is uniform and continuous, and to avoid defects such as incomplete welding or missing welding, so as to ensure the connection strength and sealing. The central column 132 is connected to the straight plate 133, the straight plate 133 is connected to the inner support plate 134, the intermediate support plate 135 and the outer support plate 136 by welding. After welding, the weld needs to be ground to remove burrs and welding slag, so as to ensure the flatness of the structure.

[0057] If flanges are used to connect the sections of the internal circulation duct, gaskets must be installed between the flanges and bolts must be tightened to ensure the airtightness of the connection and prevent air leakage. If welding is used, the airtightness and structural strength of the weld must be ensured to avoid air leakage.

[0058] The connection between the valve core drive component 353 and the drive shaft, and between the drive shaft and the ball valve core 351, must be coaxial to avoid the ball valve core 351 from getting stuck due to coaxiality deviation, which would affect the opening and closing effect. The connection parts can be keyed or welded to ensure the reliability of torque transmission.

[0059] The present invention also protects a high and low voltage complete set of equipment 4 including the above-mentioned towable mobile protective components. The high and low voltage complete set of equipment 4 is set in the protective box 2 and is fixedly connected to the equipment mounting base inside the protective box 2 by bolts. It has a vent and the exhaust end 3110 of the exhaust pipe 31 is fixedly connected by a sealing flange, and the exhaust pipe 33 is fixedly connected by a sealing flange to ensure the airflow sealing and realize the coordinated operation with the internal circulation mechanism 3 to jointly complete the heat dissipation, filtration and air circulation process. The high and low voltage complete set of equipment 4 also has conventional air vents and other conventional structures, which will not be described in detail here.

[0060] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A draggable mobile protective component, comprising: A base (1) is provided with a lifting lug (14) on its side wall and a set of movable wheels (15) is provided at the bottom of the base (1). A protective box (2) is mounted on a base (1); Its characteristic is that it further includes: An internal circulation mechanism (3) is installed inside the protective box (2). The internal circulation mechanism (3) is used to circulate and dissipate heat from the air inside the high and low voltage complete set of equipment (4). The base (1) has a hollow structure and a lightweight support unit (13) is provided inside the base (1).

2. The draggable mobile protective assembly according to claim 1, characterized in that, The internal circulation mechanism (3) also includes: An internal circulation duct, comprising an exhaust pipe section (31), a heat dissipation pipe section (32), and an exhaust pipe section (33); Heat dissipation unit (34), which is disposed on the outside of heat dissipation pipe (32) to absorb the heat dissipation emitted by heat dissipation pipe (32); The two ends of the heat dissipation pipe section (32) are connected to the exhaust pipe section (31) and the exhaust pipe section (33) respectively. The internal circulation air pipe is connected to the inside of the high and low pressure complete set of equipment (4) through the exhaust pipe section (31) and the exhaust pipe section (33).

3. A draggable mobile protective assembly according to claim 2, characterized in that, The extraction pipe section (31) also includes: The main body (311) is in the shape of a tuning fork. The two pipe sections of the main body (311) located at the fork arm are the air extraction end (3110), and the pipe section located at the fork handle is the air outlet end. An exhaust fan (312) is provided in the two exhaust ends (3110) of the main body (311); A filter unit (35) is disposed in the two exhaust ends (3110) of the main body (311) and located downstream of the exhaust fan (312); The filter unit (35) is used to filter the air entering the main body (311), and the two air extraction ends (3110) of the main body (311) can operate alternately.

4. A draggable mobile protective assembly according to claim 3, characterized in that, The filter unit (35) further includes: A ball valve core (351) is provided in the exhaust end (3110) of the main body (311) and located downstream of the exhaust fan (312). A filter element (352) is provided in the through hole of the ball valve core (351). A valve core drive (353) is provided below the air extraction end (3110) of the main body (311) for driving the ball valve core (351) to rotate. Ash discharge branch pipe (354), wherein the ash discharge branch pipe (354) and the air extraction end (3110) of the main body (311) are distributed in a cross shape and are connected to the air extraction end (3110) of the main body (311) at the intersection. The main body (311) has a valve seat (356) in the exhaust end (3110) that matches the ball valve core (351). The air inlet of the ash discharge branch pipe (354) is connected to the exhaust end (3110) of the main body (311) and is located between the ball valve core (351) and the exhaust fan (312). The exhaust end of the ash discharge branch pipe (354) extends to the outside of the protective box (2). When the ball valve core (351) opens the exhaust end (3110), the ash discharge branch pipe (354) is in a closed state. When the ball valve core (351) closes the exhaust end (3110), the ash discharge branch pipe (354) is in an open state.

5. A towable mobile protective assembly according to claim 4, characterized in that, The base (1) also includes: The base plate includes an upper base plate (11) and a lower base plate (12); The lightweight support unit (13) is fixedly disposed between the upper base plate (11) and the lower base plate (12).

6. A towable mobile protective assembly according to claim 5, characterized in that, The lightweight support unit (13) also includes: The outer frame (131) has the same outline as the base plate and is fixedly disposed between the upper base plate (11) and the lower base plate (12). The support portion has a centrally radiating mesh structure, and the arrangement density and wall thickness of the support portion change in a gradient from the center to the edge.

7. A draggable mobile protective assembly according to claim 6, characterized in that, The support portion also includes: A central column (132) is located at the center point of the outer frame (131); Several straight plates (133) extend radially from the center point to the inner wall of the outer frame (131). The inner end of the straight plate (133) is connected to the outer wall of the central column (132), and the other end is connected to the inner wall of the outer frame (131). The hexagonal support plate assembly includes an inner plate assembly, a middle plate assembly, and an outer plate assembly that are concentrically distributed from the inside out with the central column (132) as the center point; The inner plate group is composed of several concentrically distributed inner support plates (134), the middle plate group is composed of several concentrically distributed middle support plates (135), and the outer plate group is composed of several concentrically distributed outer support plates (136). The arrangement density of the inner plate group, the middle plate group, and the outer plate group decreases in sequence, and the wall thickness of the inner support plate (134), the middle support plate (135), and the outer support plate (136) increases in sequence.

8. A draggable mobile protective assembly according to claim 7, characterized in that, Also includes: Hexagonal through holes (137), the hexagonal through holes (137) having a plurality of them and evenly distributed on the intermediate support plate (135) and the outer support plate (136) of the intermediate plate group and the outer plate group, the hexagonal through holes (137) being distributed through the wall thickness direction of the intermediate support plate (135) and the outer support plate (136); The reinforcing rod (138) is arranged in six positions corresponding to the number of sides of the hexagonal through hole (137). The six reinforcing rods (138) are radially distributed with the center of the hexagonal through hole (137) as the radial center. The reinforcing rod (138) is a hexagonal hollow rod. The outer ends of the six reinforcing rods (138) are connected to the six sides of the hexagonal through hole (137), and the inner ends are connected to each other through the central block (139).

9. A high- and low-voltage complete set of equipment including the towable mobile protective assembly as described in claim 8, characterized in that: The high and low voltage complete set of equipment (4) is installed in the protective box (2).

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