Anti-pollution oil-immersed transformer

Abstract

The invention relates to the technical field of oil-immersed transformers, in particular to an anti-pollution oil-immersed transformer which comprises a transformer body and further comprises a supporting mechanism, a flow guide mechanism and a cleaning mechanism, and the supporting mechanism is located on the outer side of cooling fins and composed of a first shielding plate and a second shielding plate; the first shielding plate and the second shielding plate are used for shielding the outer sides of the cooling fins, the flow guide mechanism is composed of a bearing plate and multiple sets of flow guide blades, the bearing plate is used for carrying the multiple sets of flow guide blades to rotate integrally, and the flow guide blades are used for guiding environment airflow. The cleaning mechanism is composed of a frame and a plurality of silica gel scrapers, the frame is used for combining the silica gel scrapers, the silica gel scrapers are used for scraping and cleaning the outer walls of the cooling fins, the guide vanes can be driven by the bearing plate to generate angle deflection, environmental airflow is flexibly guided to flow to the cooling fins, the cooling efficiency is improved, and the service life of the cooling fins is prolonged. And different wind direction conditions can be adapted.

Description

Technical Field

[0001] The present invention relates to the technical field of oil-immersed transformers, and in particular to an anti-pollution oil-immersed transformer. Background Art

[0002] Oil-immersed transformers are a type of transformer widely used in power systems. Their core feature is that insulation and heat dissipation are achieved through insulating oil (usually mineral oil). Its uses are mainly reflected in many fields such as power transmission, distribution and industrial applications. The oil-immersed transformer is mainly composed of iron core, winding, oil tank, voltage regulating device, radiator, oil pillow, insulating sleeve and explosion-proof pipe. The iron core is composed of stacked silicon steel sheets with good magnetic conductivity to form a closed magnetic flux loop. The primary and secondary windings of the transformer are wound on the iron core and are divided into two structures: core type and shell type. The core type iron core widely used at present is composed of iron core column and iron yoke. There is an oil channel inside to cool the iron core to facilitate the circulation of transformer oil. The winding is the conductive circuit of the transformer. It is made of copper wire or aluminum wire into a multi-layer cylindrical shape. The primary and secondary windings are concentrically sleeved on the iron core column. Generally, the low-voltage winding is inside and the high-voltage winding is outside. The insulating material is wrapped around the outside of the wire to ensure insulation between the wires and the wires to the ground. The oil tank is the outer shell of the oil-immersed transformer. In addition to storing oil, it is also used to install other components. The regulating device is set to ensure the stability of the secondary voltage of the transformer. When the power supply voltage changes, the voltage regulating device is used to adjust the transformer voltage The transformer tap-changer ensures stable secondary output voltage and is divided into two types: on-load tap-changer and no-load tap-changer. The radiator is mounted on the oil tank wall, with the upper and lower parts connected to the oil tank through pipes. When there is a temperature difference between the oil in the upper and lower parts of the transformer, convection of the oil is generated through the radiator. After being cooled by the radiator, the oil flows back to the oil tank, reducing the transformer oil temperature. Natural cooling, forced air cooling, and forced water cooling can be adopted. The oil pillow provides a buffer for thermal expansion and contraction of the oil, keeping the oil tank full of oil at all times. At the same time, it reduces the contact area between the oil and air, which can slow down oil oxidation. The high and low voltage insulation bushings are located on the top cover of the transformer oil tank. They are generally made of porcelain insulation bushings. Their function is to maintain good insulation between the high and low voltage winding leads and the oil tank and to secure the leads. The explosion-proof pipe is installed on the transformer oil tank, and the outlet is sealed with glass explosion-proof membrane. When a serious fault occurs inside the transformer and the gas relay fails, the gas inside the oil tank will break through the glass explosion-proof membrane and spray out through the safety airway, preventing the transformer from exploding.

[0003] Oil-immersed transformers operate based on the law of electromagnetic induction. When the primary winding is connected to an AC power source, an alternating magnetic flux is generated in the core. This flux passes through the primary and secondary windings, inducing an electromotive force (EMF) on each side. Due to the different number of turns, the induced EMF varies in magnitude, thus achieving voltage conversion.

[0004] Although the oil-immersed transformer in the prior art has many benefits during use, it still has the following problems: its cooling of the transformer is not perfect. When the existing oil-immersed transformer using a self-cooling radiator is in use, it dissipates heat and cools down through heat sinks distributed at multiple points outside the oil tank. However, it mainly relies on air flow to improve the heat dissipation efficiency of the transformer. Therefore, the heat sink depends on the direction of air flow. When the heat sink is arranged horizontally, the longitudinal airflow has a low heat dissipation efficiency on the heat sink, resulting in poor adaptability of the transformer to the ambient air flow. Summary of the Invention

[0005] In view of the problems in the prior art, the present invention provides an anti-pollution oil-immersed transformer.

[0006] The technical solution adopted by the present invention to solve the technical problem is an anti-pollution oil-immersed transformer, comprising a transformer body, heat sinks are provided on both sides of the transformer body, the heat sinks are used to dissipate heat from the transformer body, and the transformer body also comprises a supporting mechanism, a guide mechanism and a cleaning mechanism; The support mechanism is located outside the heat sink, and the support mechanism is composed of a first shielding plate and a second shielding plate, and the first shielding plate and the second shielding plate are used to shield the outside of the heat sink; The guide mechanism is composed of a carrier plate and multiple groups of guide blades. The carrier plate is used to carry the multiple groups of guide blades to rotate as a whole. The guide blades are used to guide the ambient airflow. The cleaning mechanism is composed of a frame and a plurality of silicone scrapers. The frame is used to combine the plurality of silicone scrapers, and the silicone scrapers are used to scrape and clean the outer wall of the heat sink.

[0007] By adopting the above technical solution, the first baffle plate and the second support plate can block the outside of the heat sink, which can reduce the direct adhesion of external dust and debris to the heat sink, play an anti-pollution role, and at the same time does not affect the normal heat dissipation function of the heat sink. The guide mechanism can drive the guide blades to deflect at an angle through the supporting plate based on the detection data of the wind direction detection mechanism, flexibly guide the ambient air flow to the heat sink, improve the heat dissipation efficiency, and adapt to different wind direction conditions. The rotation of the supporting plate can move the frame by pulling the nylon rope, and the outer wall of the heat sink can be scraped and cleaned in a targeted manner based on the silicone scraper to prevent the accumulation of dust or bird droppings from affecting heat dissipation.

[0008] Specifically, the outer walls of both sides of the first shielding plate and the second shielding plate are screwed with fasteners, the fasteners are located at the reinforcement ribs of the heat sink, and the first shielding plate and the second shielding plate are respectively assembled with the heat sink through the fasteners; The connecting arms outside the first and second shielding plates are connected by screws to provide structural strength, and the connecting arms are designed in an arc shape towards the outer walls of the first and second shielding plates.

[0009] By adopting the above technical solution, the buckle and the reinforcing ribs of the heat sink cooperate to enable the first and second shielding plates to be quickly assembled with the heat sink, and the connection is firm, facilitating later maintenance and disassembly. The connecting arms improve the overall structural strength of the first and second shielding plates, and the arc-shaped design is used to avoid blocking the rotation of the bearing plate, ensuring smooth rotation of the bearing plate.

[0010] Specifically, the support mechanism is provided with a wind direction detection mechanism at the upper end, which is composed of an angle sensor and a wind vane. The detection shaft end of the angle sensor is connected to the wind vane rod body by a pin shaft. The wind vane can rotate with the flow direction of the ambient airflow. The angle sensor is used to detect the deflection angle of the wind vane. The second shielding plate is provided with a driving motor at the lower end, which is used to drive the bearing plate to rotate according to the detection data of the angle sensor.

[0011] By adopting the above technical solution, the wind vane of the wind direction detection mechanism can rotate with the flow direction of the ambient airflow, and the angle sensor accurately detects the rotation angle, providing data basis for subsequent adjustment of the flow direction of the flow guide mechanism and optimization of the shielding angle of the guide plate. The driving motor drives the bearing plate to rotate according to the detection data of the angle sensor, realizing the linkage of wind direction detection and the flow guide mechanism, so that the flow guide vane can adjust the guide direction in time to maximize the use of ambient airflow for heat dissipation.

[0012] Specifically, a plurality of guide plates are bonded and fixed to the lower end face of the first shielding plate, and the guide plates are designed in a rhombus shape. The guide plates are between the multiple groups of flow guide vanes, and the guide plates are used to guide and support the movement track of the multiple groups of flow guide vanes. A plurality of limiting plates are bonded and fixed to the upper end face of the bearing plate, and the limiting plates are between the multiple groups of flow guide vanes. The limiting plates and each group of flow guide vanes are reserved with a gap for the entry and exit of the guide plates.

[0013] By adopting the above technical solution, the guide plates designed in a rhombus shape are between the flow guide vanes, guiding and supporting the movement track of the flow guide vanes, so that the flow guide vanes are in an inclined state during normal use, thereby forming a narrow tube effect between each group of flow guide vanes, so that the airflow flowing between the flow guide vanes can accelerate the flow of the airflow, ensuring the heat dissipation effect of the heat sink. The limiting plates reserve a gap for the entry and exit of the guide plates to avoid movement interference between the two, ensuring the stability and smoothness of the rotation process of the flow guide vanes. The cooperation of the guide plates and the limiting plates improves the coordination of the overall movement of the flow guide mechanism, ensuring that the flow guide vanes can accurately and efficiently guide the airflow.

[0014] Specifically, a slideway is provided inside the carrier plate, a limit rod is provided inside the slideway, a plurality of sliders for limiting the movement trajectory of the guide vanes are sleeved on the outer side of the limit rod, a rotating shaft is provided inside the slider, and the upper end of the rotating shaft is connected to the lower end of the guide vane by a pin; The outer side of the slider is provided with a torsion spring that provides a torsional force to the rotating shaft, and the two ends of the torsion spring are respectively connected to the rotating shaft and the outer wall of the slider; A plurality of holding springs are sleeved on the outer side of the limiting rod, and the plurality of holding springs are distributed between the plurality of groups of sliders, and the spacing between the plurality of groups of sliders is maintained by the elastic force of the holding springs.

[0015] By adopting the above technical solution, the slider moves along the limit rod in the slide, and cooperates with the torsion spring and the holding spring to enable the guide blades to flexibly adjust their position and angle to adapt to different airflow conditions and ensure the airflow guiding effect. The holding spring plays a supporting role between the sliders to ensure that the spacing between each group of sliders and the guide blades is equal, thereby maintaining the spacing between the guide blades. When the carrier plate carries the guide blades to rotate, the guide blades will be deflected at an angle due to the guide plate. Therefore, the guide blades will carry the rotating shaft to rotate inside the slider and drive the torsion spring to twist and store energy. When the guide blades break away from the guidance of the guide plate, the torsion springs corresponding to each group of guide blades can drive relative extrusion to ensure that the position of each group of guide blades is relatively stable, and the angle of the guide blades when guiding the wind direction is stable.

[0016] Specifically, the upper end surface of the guide vane does not contact the lower end surface of the first baffle.

[0017] By adopting the above technical solution, one side of the guide blade can adopt an arc-shaped design, which can reduce the resistance of airflow passing through and improve the airflow guidance efficiency. The upper end surface does not contact the lower end surface of the first baffle, avoiding friction and wear between the two.

[0018] Specifically, a plurality of through holes are opened inside the frame, and a silicone scraper is provided on the inner wall of the through hole. The silicone scraper has a cavity inside for accommodating the heat sink, and the silicone scraper is used to scrape and clean the outer wall of the heat sink; The outer wall of the frame is provided with a plurality of guide rods, and the outer walls of the first shielding plate and the second shielding plate are symmetrically provided with guide blocks, and holes for the movement of the guide rods are reserved inside the guide blocks. The guide rods cooperate with the guide blocks to limit the movement trajectory of the frame, and the guide rods protrude from the outside of the holes and are threadedly connected to positioning bolts, and the positioning bolts maintain the position of the guide rods inside the holes; A support spring is sleeved on the outer side of the guide rod, and the support spring is used to support the position of the frame.

[0019] By adopting the technical scheme, the cavity inside the silica gel scraper receives the heat dissipation sheet, can fully adhere to the outer wall of the heat dissipation sheet for scraping and cleaning, effectively removes dust and dirt, ensures the heat dissipation effect, the guide rod cooperates with the guide block to limit the moving track of the frame, makes the cleaning process stable, the positioning bolt can fix the position of the guide rod, facilitates the control of the working state of the cleaning mechanism, and the supporting spring can ensure that the position of the frame on the outer side of the heat dissipation sheet is stable when the bearing plate is not in the rotating state, avoids damage of the frame to the heat dissipation sheet.

[0020] Specifically, the second shielding plate is provided with a driving mechanism on both sides of the upper end, the driving mechanism is composed of a guide wheel and a nylon rope, and a limiting ring for limiting the moving track of the nylon rope is arranged outside the guide wheel.

[0021] By adopting the technical scheme, the limiting ring outside the guide wheel ensures the stability of the moving track of the nylon rope, and avoids the nylon rope from being separated from the guide of the guide wheel, when the bearing plate rotates, since the bearing plate is connected with the nylon rope at both ends, one end of the nylon rope is pulled to move, and the other end of the nylon rope is released, when the nylon rope is pulled, the frame is moved outside the heat dissipation sheet, and linkage of the flow guide mechanism and the cleaning mechanism is realized.

[0022] The beneficial effects of the present application are: The first shielding plate and the second supporting plate can shield the outer side of the heat dissipation sheet, can reduce that dust and sundries in the outside environment directly adhere to the heat dissipation sheet, play a role in preventing pollution, and do not affect the normal heat dissipation function of the heat dissipation sheet.

[0023] The flow guide mechanism can drive the flow guide vane to deflect in angle according to the detection data of the wind direction detection mechanism, flexibly guide the environmental airflow to the heat dissipation sheet, improve the heat dissipation efficiency, and can adapt to different wind direction conditions.

[0024] The rotation of the bearing plate can pull the frame to move through the nylon rope, and the silica gel scraper can be used to scrape and clean the outer wall of the heat dissipation sheet, so as to avoid that dust or bird droppings affect heat dissipation. BRIEF DESCRIPTION OF DRAWINGS

[0025] The present application will be further described below in combination with the drawings and examples.

[0026] Figure 1 It is a main structure schematic view of the transformer body structure of the present application; Figure 2 It is a rotation schematic view of the flow guide vane structure of the present application; Figure 3 It is a disassembly schematic view of the first shielding plate structure of the present application; Figure 4 It is a partially enlarged schematic diagram of the first shielding plate structure of the present invention; Figure 5 This is a schematic diagram of the flipping of the first shielding plate structure of the present invention; Figure 6 It is an enlarged schematic diagram of the guide blade structure of the present invention; Figure 7 It is an enlarged schematic diagram of the load-bearing plate structure of the present invention; Figure 8 This is a schematic diagram of the disassembly of the load-bearing plate structure of the present invention; Figure 9 This is a schematic diagram of a partial disassembly of the limiting rod structure of the present invention.

[0027] In the figure: 1. Transformer body; 11. Heat sink; 2. First baffle; 21. Second baffle; 22. Connecting arm; 23. Fastener; 24. Angle sensor; 25. Wind vane; 26. Guide block; 27. Guide plate; 3. Load-bearing plate; 31. Limit plate; 32. Slide; 33. Limit rod; 34. Slider; 35. Support spring; 36. Rotating shaft; 37. Torsion spring; 38. Guide vane; 4. Frame; 41. Through hole; 42. Silicone scraper; 43. Guide rod; 44. Support spring; 45. Positioning bolt; 5. Guide wheel; 51. Nylon rope. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0029] In order to save manpower and improve efficiency, as an embodiment of the present invention, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 As shown, the anti-pollution oil-immersed transformer of the present invention includes a transformer body 1, with heat sinks 11 provided on both sides of the transformer body 1 for dissipating heat from the transformer body 1, and further includes a supporting mechanism, a guide mechanism, and a cleaning mechanism; The support mechanism is located outside the heat sink 11 and is composed of a first shielding plate 2 and a second shielding plate 21. The first shielding plate 2 and the second shielding plate 21 are used to shield the outside of the heat sink 11. The guide mechanism is composed of a carrier plate 3 and multiple sets of guide blades 38. The carrier plate 3 is used to carry the multiple sets of guide blades 38 to rotate as a whole. The guide blades 38 are used to guide the ambient air flow. The cleaning mechanism is composed of a frame 4 and a plurality of silicone scrapers 42 . The frame 4 is used to combine the plurality of silicone scrapers 42 , and the silicone scrapers 42 are used to scrape and clean the outer wall of the heat sink 11 .

[0030] When in use, the first baffle plate 2 and the second support plate can block the outside of the heat sink 11, which can reduce the direct adhesion of external dust and debris to the heat sink 11, play an anti-pollution role, and at the same time do not affect the normal heat dissipation function of the heat sink 11. The guide mechanism can drive the guide blade 38 to deflect at an angle through the supporting plate 3 based on the detection data of the wind direction detection mechanism, flexibly guide the ambient air flow to the heat sink 11, improve the heat dissipation efficiency, and adapt to different wind direction conditions. The rotation of the supporting plate 3 can pull the frame 4 to move through the nylon rope 51, and the outer wall of the heat sink 11 can be scraped and cleaned according to the silicone scraper 42 to prevent the accumulation of dust or bird droppings from affecting heat dissipation.

[0031] To ensure the use of location, exemplary, such as Figure 3 As shown, the outer walls of both sides of the first shielding plate 2 and the second shielding plate 21 are screwed with fasteners 23, and the fasteners 23 are located at the reinforcement ribs of the heat sink 11. The first shielding plate 2 and the second shielding plate 21 are respectively assembled with the heat sink 11 through the fasteners 23; The first shielding plate 2 and the second shielding plate 21 are connected to each other with connecting arms 22 for providing structural strength by screws on their outer sides. The connecting arms 22 are designed in an arc shape toward the outer walls of the first shielding plate 2 and the second shielding plate 21 .

[0032] When in use, the snap fastener 23 cooperates with the reinforcement rib of the heat sink 11, so that the first baffle plate 2 and the second baffle plate 21 can be quickly assembled with the heat sink 11, and the connection is firm, which is convenient for later maintenance and disassembly. The connecting arm 22 improves the overall structural strength of the first baffle plate 2 and the second baffle plate 21. The arc shape is designed to avoid obstruction to the rotation of the supporting plate 3, ensuring the smooth rotation of the supporting plate 3.

[0033] To detect the wind direction, for example, Figure 3 As shown, a wind direction detection mechanism is provided at the upper end of the support mechanism. The wind direction detection structure is composed of an angle sensor 24 and a wind vane 25. The detection shaft end of the angle sensor 24 is connected to the rod body of the wind vane 25 by a pin. The wind vane 25 can rotate in accordance with the direction of the ambient airflow. The angle sensor 24 is used to detect the deflection angle of the wind vane 25. A driving motor is provided at the lower end of the second shielding plate 21 , and the driving motor is used to drive the supporting plate 3 to rotate according to the detection data of the angle sensor 24 .

[0034] The angle sensor 24 is screwed to the outer wall of the upper end of the first baffle plate 2 to ensure that the angle sensor 24 is in a stable position. The output end of the drive motor is connected to the shaft end of the supporting plate 3 by a coupling, and the supporting plate 3 is installed on the outer wall of the second baffle plate 21 through a bearing.

[0035] When in use, the wind vane 25 of the wind direction detection mechanism can rotate following the direction of the ambient airflow, and the angle sensor 24 accurately detects its rotation angle, providing data basis for the subsequent guide mechanism to adjust the guide direction and the guide plate 27 to optimize the blocking angle, and the driving motor drives the carrier plate 3 to rotate according to the detection data of the angle sensor 24, realizing the linkage between wind direction detection and the guide mechanism, so that the guide blade 38 can adjust the guide direction in time and maximize the use of ambient airflow for heat dissipation.

[0036] In order to guide the movement trajectory, for example, Figure 5 As shown, a plurality of guide plates 27 are bonded and fixed to the lower end surface of the first shielding plate 2. The guide plates 27 are designed in a diamond shape. The guide plates 27 are located between the multiple groups of guide blades 38 and are used to guide and support the movement trajectories of the multiple groups of guide blades 38. A plurality of limiting plates 31 are bonded and fixed to the upper end surface of the carrier plate 3 . The limiting plates 31 are located between the plurality of guide vane groups 38 . A gap is reserved between the limiting plates 31 and each group of guide vanes 38 for the guide plates 27 to enter and exit.

[0037] When in use, the diamond-shaped guide plate 27 is located between the guide blades 38, guiding and supporting the moving trajectory of the guide blades 38, so that the guide blades 38 are in an inclined state during normal use, thereby forming a narrow tube effect between each group of guide blades 38, so that when the airflow flows between the guide blades 38, the flow of the airflow will be accelerated, ensuring the heat dissipation effect of the heat sink 11, and the limiting plate 31 reserves a gap for the guide plate 27 to enter and exit, avoiding interference between the movements of the two, ensuring that the rotation process of the guide blades 38 is stable and smooth, and the cooperation between the guide plate 27 and the limiting plate 31 improves the coordination of the overall movement of the guide mechanism, ensuring that the guide blades 38 can accurately and efficiently guide the airflow.

[0038] In order to limit the movement trajectory, for example, Figure 9 As shown, a slideway 32 is provided inside the carrier plate 3, a limit rod 33 is provided inside the slideway 32, and a plurality of sliders 34 are sleeved outside the limit rod 33 for limiting the movement trajectory of the guide vane 38. A rotating shaft 36 is provided inside the slider 34, and the upper end of the rotating shaft 36 is pin-connected to the lower end of the guide vane 38; A torsion spring 37 is provided on the outside of the slider 34 to provide a torsional force to the rotating shaft 36. The two ends of the torsion spring 37 are connected to the rotating shaft 36 and the outer wall of the slider 34 respectively. A plurality of holding springs 35 are sleeved on the outer side of the limiting rod 33 . The plurality of holding springs 35 are distributed between the plurality of groups of sliders 34 , and the plurality of groups of sliders 34 are kept at a distance from each other by the elastic force of the holding springs 35 .

[0039] Both sides of the limiting rod 33 are threadedly connected with nuts, and the nuts are located on both sides of the bearing plate 3 and can maintain the use position of the limiting rod 33.

[0040] When in use, the slider 34 moves along the limit rod 33 in the slideway 32, and cooperates with the torsion spring 37 and the supporting spring 35 to enable the guide blades 38 to flexibly adjust their position and angle to adapt to different airflow conditions and ensure the airflow guiding effect. The supporting spring 35 plays a supporting role between the sliders 34, ensuring that the spacing between each group of sliders 34 and the guide blades 38 is equal, thereby maintaining the spacing between the guide blades 38. When the carrier plate 3 carries the guide blades 38 to rotate, the guide blades 38 will be deflected at an angle due to the guide plate 27. Therefore, the guide blades 38 will carry the rotating shaft 36 to rotate inside the slider 34 and drive the torsion spring 37 to twist and store energy. When the guide blades 38 break away from the guidance of the guide plate 27, the torsion spring 37 corresponding to each group of guide blades 38 can drive relative squeezing to ensure that the position of each group of guide blades 38 is relatively stable, and the angle of the guide blades 38 when guiding the wind direction is stable.

[0041] For example, in order to guide the flow, Figure 6 As shown, the upper end surface of the guide vane 38 does not contact the lower end surface of the first baffle plate 2.

[0042] When in use, one side of the guide blade 38 can adopt an arc-shaped design, which can reduce the resistance of airflow passing through and improve the airflow guiding efficiency. The upper end surface does not contact the lower end surface of the first baffle 2, avoiding friction and wear between the two.

[0043] For cleaning purposes, for example, Figure 4 As shown, a plurality of through holes 41 are opened inside the frame 4, and a silicone scraper 42 is provided on the inner wall of the through hole 41. The silicone scraper 42 has a cavity inside for receiving the heat sink 11, and the silicone scraper 42 is used to scrape and clean the outer wall of the heat sink 11; The outer wall of the frame 4 is provided with a plurality of guide rods 43. The outer walls of the first baffle plate 2 and the second baffle plate 21 are symmetrically provided with guide blocks 26. Holes for the movement of the guide rods 43 are reserved inside the guide blocks 26. The guide rods 43 cooperate with the guide blocks 26 to limit the movement trajectory of the frame 4. The guide rods 43 protrude from the outside of the holes and are threadedly connected to positioning bolts 45. The positioning bolts 45 maintain the position of the guide rods 43 inside the holes. A support spring 44 is sleeved on the outer side of the guide rod 43 , and the support spring 44 is used to support the position of the frame 4 .

[0044] The silicone scraper 42 is bonded and fixed to the inner wall of the through hole 41, and the cavity of the silicone scraper 42 contacts the outer wall of the heat sink 11. The guide rod 43 is connected to the frame 4 with screws, and the guide block 26 is respectively connected to the first baffle 2 and the second baffle 21 by welding.

[0045] During use, the cavity inside the silicone scraper 42 accommodates the heat sink 11, and can fully fit the outer wall of the heat sink 11 for scraping and cleaning, effectively removing dust and dirt and ensuring the heat dissipation effect. The guide rod 43 cooperates with the guide block 26 to limit the movement trajectory of the frame 4, making the cleaning process stable. The positioning bolt 45 can fix the position of the guide rod 43, which is convenient for controlling the working state of the cleaning mechanism, and the support spring 44 can ensure that the position of the frame 4 outside the heat sink 11 is stable when the supporting plate 3 is not in a rotating state, thereby avoiding the frame 4 from causing damage to the heat sink 11.

[0046] To drive the movement, for example, Figure 7 As shown, a driving mechanism is provided on both sides of the upper end of the second shielding plate 21. The driving mechanism is composed of a guide wheel 5 and a nylon rope 51. A limiting ring is provided on the outer side of the guide wheel 5 for limiting the moving track of the nylon rope 51.

[0047] During use, the limiting ring on the outside of the guide wheel 5 ensures that the moving trajectory of the nylon rope 51 is stable and prevents the nylon rope 51 from escaping from the guidance of the guide wheel 5. When the supporting plate 3 rotates, since the two ends of the supporting plate 3 are respectively connected to the nylon rope 51, one end of the nylon rope 51 is pulled to move, while the other end of the nylon rope 51 is released. When the nylon rope 51 is pulled, it will carry the frame 4 to move outside the heat sink 11, realizing the linkage between the diversion mechanism and the cleaning mechanism.

[0048] When in use, the first and second shielding plates 2, 21 are connected and secured to the heat sink 11 reinforcement ribs via snaps 23. The arc-shaped connecting arms 22 enhance overall stability. Supported by support springs 44, the frame 4 is positioned in its initial position outside the heat sink 11. The guide vanes 38 are maintained at a uniform spacing by the support springs 35 and torsion springs 37. Each set of guide vanes 38 is supported by the guide plates 27 and is in an open position, creating a narrow tube between the guide vanes 38 and increasing airflow velocity. The wind direction detection mechanism at the upper end of the support mechanism monitors the ambient airflow in real time. The wind vane 25 rotates with the wind direction. The angle sensor 24 accurately detects its deflection angle through a pin connection and transmits the data to the supporting controller. Based on the detection data of the angle sensor 24, the controller starts the drive motor when the rotation angle is greater than 20 degrees, driving the carrier plate 3 to rotate. When the carrier plate 3 drives the multiple groups of guide blades 38 to rotate as a whole, the guide blades 38 are angularly deflected along the shape of the diamond-shaped guide plate 27, and the guide blades move along the trajectory. At the same time, the slider 34 slides along the limit rod 33 in the slideway 32, and the holding spring 35 maintains the spacing between the sliders 34. The torsion spring 37 provides a torsional force to the guide blades 38 through the rotating shaft 36, thereby expanding the airflow guidance range of the guide blades 38 and ensuring the efficiency of guiding the longitudinal airflow. As the carrier plate 3 rotates, the nylon rope 51 connected to its two ends is driven by the guide wheel 5, with one end pulling and the other end releasing. When the nylon rope 51 pulls the frame 4, the guide rod 43 moves along the hole in the guide block 26, compressing the support spring 44. The frame 4 then drives the silicone scraper 42 along the outer wall of the heat sink 11, scraping and cleaning it using the cavity to fit the heat sink 11. When the wind direction changes and moves toward the heat sink 11, the driving motor drives the supporting plate 3 to rotate in the reverse direction, and the guide blade 38 is reset to an adjusted angle under the action of the torsion spring 37 and the guide plate 27. The limit plate 31 reserves a gap to avoid movement interference, ensuring that the guide blade 38 is reset to an adjusted angle under the action of the torsion spring 37 and the guide plate 27. At the same time, the release end of the nylon rope 51 pulls the frame 4 to move in the reverse direction, and the support spring 44 rebounds to assist the frame 4 in resetting.

[0049] It should be noted that the present invention is an anti-pollution oil-immersed transformer. The components in the present invention are all components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0050] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pollution-proof oil-immersed transformer, comprising a transformer body (1), wherein heat sinks (11) are provided on both sides of the transformer body (1), and the heat sinks (11) are used for heat dissipation of the transformer body (1), characterized in that: It also includes a supporting mechanism, a diversion mechanism and a cleaning mechanism; The support mechanism is located outside the heat sink (11), and the support mechanism is composed of a first shielding plate (2) and a second shielding plate (21), and the first shielding plate (2) and the second shielding plate (21) are used to shield the outside of the heat sink (11); The guide mechanism is composed of a carrier plate (3) and a plurality of guide blades (38); the carrier plate (3) is used to carry the plurality of guide blades (38) to rotate as a whole; the guide blades (38) are used to guide the ambient airflow; The cleaning mechanism is composed of a frame (4) and a plurality of silicone scrapers (42); the frame (4) is used to combine the plurality of silicone scrapers (42); and the silicone scrapers (42) are used to scrape and clean the outer wall of the heat sink (11).

2. The anti-pollution oil-immersed transformer according to claim 1, characterized in that: The outer walls of both sides of the first shielding plate (2) and the second shielding plate (21) are screwed with fasteners (23), the fasteners (23) are located at the reinforcing ribs of the heat sink (11), and the first shielding plate (2) and the second shielding plate (21) are respectively assembled with the heat sink (11) via the fasteners (23); The first shielding plate (2) and the second shielding plate (21) are connected to each other on their outer sides by screws with connecting arms (22) for providing structural strength, and the connecting arms (22) are designed in an arc shape toward the outer walls of the first shielding plate (2) and the second shielding plate (21).

3. The anti-pollution oil-immersed transformer according to claim 1, characterized in that: A wind direction detection mechanism is provided at the upper end of the support mechanism. The wind direction detection structure is composed of an angle sensor (24) and a wind vane (25). A pin is used to connect the detection shaft end of the angle sensor (24) and the rod body of the wind vane (25). The wind vane (25) can rotate in accordance with the flow direction of the ambient airflow. The angle sensor (24) is used to detect the deflection angle of the wind vane (25). A driving motor is provided at the lower end of the second shielding plate (21), and the driving motor is used to drive the carrier plate (3) to rotate according to detection data of the angle sensor (24).

4. The anti-pollution oil-immersed transformer according to claim 1, characterized in that: A plurality of guide plates (27) are bonded and fixed to the lower end surface of the first shielding plate (2), the guide plates (27) being designed in a diamond shape, the guide plates (27) being located between the plurality of guide blades (38), and the guide plates (27) being used to guide and support the movement trajectories of the plurality of guide blades (38); A plurality of limiting plates (31) are bonded and fixed to the upper end surface of the carrier plate (3), and the limiting plates (31) are located between the plurality of groups of guide blades (38). A gap is reserved between the limiting plates (31) and each group of guide blades (38) for the guide plates (27) to enter and exit.

5. The anti-pollution oil-immersed transformer according to claim 1, characterized in that: A slideway (32) is provided inside the carrier plate (3), a limiting rod (33) is provided inside the slideway (32), a plurality of groups of sliders (34) for limiting the movement trajectory of the guide vane (38) are sleeved on the outer side of the limiting rod (33), a rotating shaft (36) is provided inside the slider (34), and the upper end of the rotating shaft (36) is connected to the lower end of the guide vane (38) by a pin; A torsion spring (37) for providing a torsional force to the rotating shaft (36) is provided on the outer side of the slider (34), and both ends of the torsion spring (37) are respectively connected to the rotating shaft (36) and the outer wall of the slider (34); A plurality of holding springs (35) are sleeved on the outer side of the limiting rod (33), and the plurality of holding springs (35) are distributed between the plurality of groups of sliders (34), and the spacing between the plurality of groups of sliders (34) is maintained by the elastic force of the holding springs (35).

6. The anti-pollution oil-immersed transformer according to claim 1, characterized in that: The upper end surface of the guide blade (38) does not contact the lower end surface of the first baffle (2).

7. The anti-pollution oil-immersed transformer according to claim 1, characterized in that: A plurality of through holes (41) are provided inside the frame (4), and a silicone scraper (42) is provided on the inner wall of the through hole (41). The silicone scraper (42) has a cavity inside for accommodating the heat sink (11), and the silicone scraper (42) is used to scrape and clean the outer wall of the heat sink (11); The outer wall of the frame (4) is provided with a plurality of guide rods (43), and the outer walls of the first baffle plate (2) and the second baffle plate (21) are symmetrically provided with guide blocks (26), and holes for the guide rods (43) to move are reserved inside the guide blocks (26). The guide rods (43) cooperate with the guide blocks (26) to limit the movement trajectory of the frame (4), and the guide rods (43) protrude from the outside of the holes and are threadedly connected to positioning bolts (45), and the positioning bolts (45) maintain the position of the guide rods (43) inside the holes; A support spring (44) is sleeved on the outside of the guide rod (43), and the support spring (44) is used to support the position of the frame (4).

8. The anti-pollution oil-immersed transformer according to claim 1, characterized in that: A driving mechanism is provided on both sides of the upper end of the second shielding plate (21), the driving mechanism being composed of a guide wheel (5) and a nylon rope (51), and a limiting ring for limiting the moving track of the nylon rope (51) is provided on the outer side of the guide wheel (5).

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