Structure and method for fixing cooling fan of dry-type transformer

Abstract

The invention discloses a structure and method for fixing a cooling fan of a dry-type transformer, and relates to the technical field of transformer cooling, the structure comprises a transformer case, a base is fixedly installed at the bottom of the transformer case, a heat dissipation groove is formed in the surface of the transformer case, a dust cover is fixedly installed on the outer wall of the transformer case, and the dust cover is fixedly installed on the base. Filter plates are fixedly mounted on the inner wall of the transformer case, and a dry-type transformer is arranged between the filter plates; the anti-blocking device is arranged in the transformer case, the anti-blocking device comprises a motor, a reciprocating screw rod, a threaded block, a fixed rod, a cooling fan, a dust blocking filter plate, a triangular block, a connecting seat, a rotating plate and a sliding plate, and the reciprocating screw rod rotates to drive the threaded block to reciprocate up and down; a threaded block reciprocates up and down to drive a cooling fan to reciprocate up and down, a sliding plate slides down to push down impurities attached to a dust blocking filter plate, and dust blocking is prevented from affecting normal heat dissipation of equipment.

Description

Technical Field

[0001] The invention relates to the technical field of transformer cooling, and in particular to a structure and method for fixing a cooling fan of a dry-type transformer. Background Art

[0002] The dry-type transformer cooling fan refers to a device used to cool the transformer. The motor stator and rotor cores are made of high-quality cold-rolled silicon steel sheets; low-noise bearings; the impeller is made of aluminum alloy with surface electrophoresis treatment, and then fine dynamic balancing adjustment; the left and right end plates are stamped from stainless steel plates, and the air inlet plate, air outlet plate and air guide plate are made of aluminum alloy profile buckle combination.

[0003] The patent with the patent announcement number CN214254051U relates to a structure for fixing a cooling fan of a dry-type transformer, comprising a base, on which a dry-type transformer and a cooling fan are respectively arranged, baffles are fixed on both sides of the base, a slide groove is arranged on the baffle, a movable rod is inserted between the slide grooves of the baffles, a fixed rod is also arranged between the baffles, a lifting frame is connected to both sides of the movable rod and the fixed rod, a lifting platform is arranged at the bottom of the cooling fan, the upper and lower ends of the lifting frame are respectively connected to the base and the lifting platform, and the bottom of the lifting platform is provided with the same structure as the base for connecting the lifting frame. The structure for fixing the cooling fan of the dry-type transformer can adjust the height of the cooling fan and the angle of the air outlet, thereby improving the cooling effect on the dry-type transformer.

[0004] In the above patent, the height of the cooling fan and the angle of the air outlet can be adjusted by fixing the structure of the dry-type transformer cooling fan, thereby improving the cooling effect of the dry-type transformer. However, dust may block the vents during the heat dissipation process, which may affect the smooth flow of air and reduce the heat dissipation effect. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a structure and method for fixing a cooling fan of a dry-type transformer, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a structure for fixing a cooling fan of a dry-type transformer, comprising: a transformer chassis, a base is fixedly installed at the bottom of the transformer chassis, a heat dissipation groove is opened on the surface of the transformer chassis, a dust cover is fixedly installed on the outer wall of the transformer chassis, a filter plate is fixedly installed on the inner wall of the transformer chassis, and a dry-type transformer is arranged between the filter plates; an anti-blocking device, the anti-blocking device is arranged inside the transformer chassis, and the anti-blocking device comprises a motor, a reciprocating screw, a threaded block, a fixed rod, a cooling fan, a dust filter plate, a triangular block, a connecting seat, a rotating plate and a sliding plate, the rotation of the reciprocating screw will drive the threaded block to reciprocate up and down, and the reciprocating movement of the threaded block up and down will drive the cooling fan to reciprocate up and down, and the motor is fixedly installed on the top of the base The reciprocating screw is fixedly mounted on the output end of the motor, the threaded block is threadedly mounted on the circumferential surface of the reciprocating screw, the fixed rod is fixedly mounted on the inner wall of the transformer case, the fixed rod slides through the surface of the threaded block, the cooling fan is fixedly mounted on the surface of the threaded block, the dust filter plate is slidably mounted on the inner wall of the heat dissipation groove, the triangular block is fixedly mounted on the side of the dust filter plate close to the threaded block, the connecting seat is fixedly mounted on the inner wall of the dust cover, the rotating plate is rotatably mounted on the inner wall of the connecting seat, the sliding plate is slidably mounted on the side of the dust filter plate close to the dust cover, and the end of the rotating plate away from the connecting seat is rotatably mounted on the inner wall of the sliding plate, the dust filter plate moves away from the threaded block, which drives the sliding plate to move away from the threaded block, and the sliding plate moves in the direction away from the threaded block and is squeezed by the rotating plate, causing the sliding plate to slide downward.

[0007] According to the above technical solution, a No. 1 spring is arranged between the dust filter plate and the heat dissipation groove, and the dust filter plate is reset by the No. 1 spring. A No. 2 spring is arranged between the sliding plate and the dust filter plate, and the sliding plate is reset by the No. 2 spring.

[0008] According to the above technical solution, a scraping device for preventing dust from adhering is provided on the filter plate, an anti-floating device is provided on the bottom of the inner wall of the transformer case, the scraping device includes a connecting rod, an elastic telescopic rod and a scraper, and the connecting rod is driven downward by the downward movement of the threaded block, the downward movement of the connecting rod will drive the elastic telescopic rod to move downward, and the downward movement of the elastic telescopic rod will drive the scraper to move downward, the connecting rod is slidably installed at the bottom of the threaded block, the elastic telescopic rod is fixedly installed at one end of the connecting rod away from the threaded block, and the scraper is fixedly installed at the free end of the elastic telescopic rod.

[0009] According to the above technical solution, a fixing frame is fixedly installed on the inner wall of the transformer case, a long plate is fixedly installed on the surface of the fixing frame, a rotating shaft is rotatably installed on the surface of the long plate, a rotating plate is fixedly installed on the circumferential surface of the rotating shaft, a limiting block is fixedly installed on the circumferential surface of the rotating shaft, the rotating plate pushes the connecting rod to move in the direction away from the filter plate, and the movement of the connecting rod in the direction away from the filter plate will drive the elastic telescopic rod and the scraper to move in the direction away from the filter plate.

[0010] According to the above technical solution, the scraper is in contact with the surface of the filter plate, a No. 1 torsion spring is arranged between the long plate and the rotating shaft, the No. 1 torsion spring drives the rotating shaft to reset, and the limit block is in contact with the surface of the long plate.

[0011] According to the above technical scheme, the anti-floating device includes an L-shaped plate, a baffle, a rotating rod, a fixed plate and a collecting box. The scraper moves downward to push the L-shaped plate downward, and the downward movement of the L-shaped plate will push the fixed plate downward. The downward movement of the fixed plate will cause the scraped dust to slide into the collection box through the fixed plate. The L-shaped plate is slidably installed on the surface of the filter plate, the baffle is fixedly installed on the inner wall of the transformer case, the rotating rod is rotatably installed on a side of the filter plate close to the reciprocating screw rod, the fixed plate is fixedly installed on the circumferential surface of the rotating rod, and the collection box is slidably installed on the bottom of the inner wall of the transformer case.

[0012] According to the above technical solution, an L-shaped slide is slidably installed on the inner wall of the collection box, a push rod is fixedly installed on the side of the L-shaped slide away from the inner wall of the collection box, a trapezoidal block is slidably installed on the inner wall of the collection box, and a slide is fixedly installed on the side of the trapezoidal block away from the push rod. The downward movement of the L-shaped slide will drive the push rod to move downward, the downward movement of the push rod will push the trapezoidal block to move in the direction away from the push rod, and the movement of the trapezoidal block in the direction away from the push rod will drive the slide to move in the direction away from the push rod.

[0013] According to the above technical solution, a No. 2 torsion spring is arranged between the rotating rod and the filter plate, and the No. 2 torsion spring drives the rotating rod to reset. A No. 3 spring is arranged in the collecting box and the L-shaped slide plate, and the No. 3 spring drives the L-shaped slide plate to reset. A No. 4 spring is arranged between the collecting box and the trapezoidal block, and the No. 4 spring drives the trapezoidal block to reset.

[0014] A method for fixing a cooling fan structure of a dry-type transformer comprises the following steps: Step 1: Use the cooling fan to drive air flow to cool the dry-type transformer to prevent the equipment from overheating, causing a short circuit in the equipment and affecting normal use; Step 2: The reciprocating screw is driven to rotate by the rotation of the motor, and the rotation of the reciprocating screw drives the thread block to reciprocate up and down. The up and down reciprocating motion of the thread block drives the cooling fan to reciprocate up and down. The up and down reciprocating motion of the cooling fan can create a stronger air flow, promote the circulation of air around the transformer, and thus improve the heat dissipation efficiency; Step 3: The thread block contacts the triangular block during the up and down reciprocating motion. The thread block pushes the triangular block to move away from the thread block. The triangular block moves away from the thread block, driving the dust filter plate to move away from the thread block. The dust filter plate moves away from the thread block to push the dust stuck inside the heat sink out of the heat sink, preventing the dust from clogging the heat sink and affecting the normal heat dissipation effect of the equipment. Step 4: The dust filter plate moves away from the threaded block, driving the sliding plate to move away from the threaded block. The sliding plate moves away from the threaded block and is squeezed by the rotating plate, causing the sliding plate to slide downward. The sliding plate slides downward to push down the impurities adhered to the dust filter plate to prevent dust clogging and affecting the normal heat dissipation of the equipment.

[0015] The present invention provides a structure and method for fixing a cooling fan of a dry-type transformer. It has the following beneficial effects: (1) This invention uses a cooling fan to drive air flow to cool down the dry-type transformer, thereby preventing the equipment from overheating and causing a short circuit in the equipment, which would affect normal use. At the same time, the cooling fan can create a stronger air flow by reciprocating up and down, promoting air circulation around the transformer, thereby improving the heat dissipation efficiency. The dust filter plate can be moved away from the threaded block to push the dust stuck in the heat dissipation slot out of the heat dissipation slot, thereby preventing the dust from clogging the heat dissipation slot and affecting the normal heat dissipation effect of the equipment. The sliding plate can then slide downward to push down the impurities adhering to the dust filter plate, thereby preventing the dust from clogging and affecting the normal heat dissipation of the equipment.

[0016] (2) The invention can scrape away the dust stuck on the filter plate by moving the scraper downward, thus preventing the dust from clogging the filter plate and affecting the heat dissipation of the transformer by the circulating gas. At the same time, the elastic telescopic rod can prevent the filter plate from being scratched, thereby improving the applicability of the equipment. At the same time, the scraper can be separated from the filter plate to prevent the scraper from continuously scraping the filter plate during its upward movement. Long-term scraping will cause the filter plate to wear faster, thus affecting the service life of the equipment.

[0017] (3) The invention, by moving the fixed plate downward, causes the scraped dust to slide into the collection box through the fixed plate, thereby collecting the dust and preventing the scraped dust from floating inside the transformer case, causing the dust to re-adhere to the filter plate and affect the air flow. The sliding plate is reset to push the fallen dust into the collection box, preventing the dust from piling up too high, causing the internal space of the collection box to be unable to be reasonably utilized and affecting the collection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 3 It is a schematic structural diagram of the anti-accumulation device of the present invention; Figure 4 This is a schematic diagram of the structure of the triangular block and the dust filter plate of the present invention; Figure 5 It is a schematic diagram of the structure of the scraping device of the present invention; Figure 6 It is a schematic diagram of the long board and the rotating shaft structure of the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of the collecting box of the present invention.

[0019] In the figure: 1. transformer chassis; 2. base; 3. dust cover; 4. filter plate; 5. motor; 6. reciprocating screw; 7. threaded block; 8. fixed rod; 9. cooling fan; 10. dust filter plate; 11. triangular block; 12. connecting seat; 13. rotating plate; 14. sliding plate; 151. connecting rod; 152. elastic telescopic rod; 153. scraper; 154. fixing frame; 155. long board; 156. rotating shaft; 157. rotating plate; 158. limiting block; 161. L-shaped plate; 162. baffle; 163. rotating rod; 164. fixed plate; 165. collecting box; 166. L-shaped slide plate; 167. push rod; 168. trapezoidal block; 169. slide plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 7One embodiment of the present invention is: a structure for fixing a cooling fan of a dry-type transformer, comprising: a transformer chassis 1, a base 2 is fixedly installed at the bottom of the transformer chassis 1, a heat dissipation groove is opened on the surface of the transformer chassis 1, a dust cover 3 is fixedly installed on the outer wall of the transformer chassis 1, a filter plate 4 is fixedly installed on the inner wall of the transformer chassis 1, and a dry-type transformer is arranged between the filter plates 4; an anti-blocking device, the anti-blocking device is arranged inside the transformer chassis 1, and the anti-blocking device includes a motor 5, a reciprocating screw rod 6, a threaded block 7, a fixed rod 8, a cooling fan 9, a dust filter plate 10, a triangular block 11, a connecting seat 12, a rotating plate 13 and a sliding plate 14. The cooling fan 9 can create a stronger air flow by reciprocating up and down, promote the circulation of air around the transformer, thereby improving the heat dissipation efficiency. The motor 5 is fixedly installed At the top of the base 2, the reciprocating screw 6 is fixedly installed on the output end of the motor 5, the threaded block 7 is threadedly installed on the circumferential surface of the reciprocating screw 6, the fixed rod 8 is fixedly installed on the inner wall of the transformer chassis 1, the fixed rod 8 slides through the surface of the threaded block 7, the cooling fan 9 is fixedly installed on the surface of the threaded block 7, the dust filter plate 10 is slidably installed on the inner wall of the heat dissipation groove, the triangular block 11 is fixedly installed on the side of the dust filter plate 10 close to the threaded block 7, the connecting seat 12 is fixedly installed on the inner wall of the dust cover 3, the rotating plate 13 is rotatably installed on the inner wall of the connecting seat 12, the sliding plate 14 is slidably installed on the side of the dust filter plate 10 close to the dust cover 3, the end of the rotating plate 13 away from the connecting seat 12 is rotatably installed on the inner wall of the sliding plate 14, and the sliding plate 14 slides downward to push down the impurities adhering to the dust filter plate 10 to prevent dust clogging from affecting the normal heat dissipation of the equipment.

[0022] A No. 1 spring is arranged between the dust filter plate 10 and the heat dissipation slot, and the dust filter plate 10 is reset by the No. 1 spring. A No. 2 spring is arranged between the sliding plate 14 and the dust filter plate 10, and the sliding plate 14 is reset by the No. 2 spring.

[0023] When the present embodiment is working, the cooling fan 9 drives the air flow to cool the dry-type transformer, so as to prevent the equipment from overheating, causing the equipment to short-circuit and affecting normal use. At the same time, the motor 5 rotates to drive the reciprocating screw 6 to rotate, and the rotation of the reciprocating screw 6 drives the thread block 7 to reciprocate up and down. The up and down reciprocating movement of the thread block 7 drives the cooling fan 9 to reciprocate up and down. The up and down reciprocating movement of the cooling fan 9 can create a stronger air flow, promote the circulation of air around the transformer, and thus improve the heat dissipation efficiency. At the same time, the thread block 7 will contact the triangular block 11 during the up and down reciprocating movement, and the thread block 7 will push the triangular block 11 to move away from the thread block 7. The movement of the triangular block 11 away from the threaded block 7 will drive the dust filter plate 10 to move away from the threaded block 7. The movement of the dust filter plate 10 away from the threaded block 7 will push the dust stuck inside the heat sink out of the heat sink to prevent the dust from clogging the heat sink and affecting the normal heat dissipation effect of the equipment. At the same time, the movement of the dust filter plate 10 away from the threaded block 7 will drive the sliding plate 14 to move away from the threaded block 7. The movement of the sliding plate 14 away from the threaded block 7 will be squeezed by the rotating plate 13, causing the sliding plate 14 to slide downward. The downward sliding of the sliding plate 14 will push down the impurities adhered to the dust filter plate 10 to prevent dust clogging and affecting the normal heat dissipation of the equipment.

[0024] See also Figure 1-Figure 7 On the basis of the above embodiment, in another embodiment of the present invention, a scraping device for preventing dust from adhering is provided on the filter plate 4, an anti-floating device is provided at the bottom of the inner wall of the transformer chassis 1, the scraping device comprises a connecting rod 151, an elastic telescopic rod 152 and a scraper 153, the connecting rod 151 is slidably mounted at the bottom of the threaded block 7, the elastic telescopic rod 152 is fixedly mounted at one end of the connecting rod 151 away from the threaded block 7, the scraper 153 is fixedly mounted at the free end of the elastic telescopic rod 152, and the dust blocked on the filter plate 4 can be scraped off by the downward movement of the scraper 153, so as to prevent the dust from blocking the filter plate 4 and affecting the heat dissipation of the transformer by the circulating gas.

[0025] A fixing frame 154 is fixedly installed on the inner wall of the transformer chassis 1, a long plate 155 is fixedly installed on the surface of the fixing frame 154, a rotating shaft 156 is rotatably installed on the surface of the long plate 155, a rotating plate 157 is fixedly installed on the circumferential surface of the rotating shaft 156, and a limiting block 158 is fixedly installed on the circumferential surface of the rotating shaft 156, which is separated from the filter plate 4 by the scraper 153 to prevent the scraper 153 from continuously scraping the filter plate 4 during the upward movement. Long-term scraping causes the filter plate 4 to wear faster, affecting the service life of the equipment.

[0026] The scraper 153 contacts the surface of the filter plate 4 , a torsion spring No. 1 is provided between the long plate 155 and the rotating shaft 156 , and the rotating shaft 156 is driven to reset by the torsion spring No. 1 , and the limit block 158 contacts the surface of the long plate 155 .

[0027] The anti-floating device includes an L-shaped plate 161, a baffle 162, a rotating rod 163, a fixed plate 164 and a collecting box 165. The L-shaped plate 161 is slidably mounted on the surface of the filter plate 4, the baffle 162 is fixedly mounted on the inner wall of the transformer chassis 1, the rotating rod 163 is rotatably mounted on a side of the filter plate 4 close to the reciprocating screw 6, the fixed plate 164 is fixedly mounted on the circumferential surface of the rotating rod 163, and the collecting box 165 is slidably mounted on the bottom of the inner wall of the transformer chassis 1 to prevent the scraped dust from floating inside the transformer chassis 1, causing the dust to re-adhere to the filter plate 4 and affect the circulation of airflow.

[0028] An L-shaped slide plate 166 is slidably installed on the inner wall of the collection box 165, and a push rod 167 is fixedly installed on the side of the L-shaped slide plate 166 away from the inner wall of the collection box 165. A trapezoidal block 168 is slidably installed on the inner wall of the collection box 165, and a slide plate 169 is fixedly installed on the side of the trapezoidal block 168 away from the push rod 167 to prevent dust from accumulating too high, resulting in the internal space of the collection box 165 cannot be reasonably utilized, affecting the collection effect.

[0029] A No. 2 torsion spring is arranged between the rotating rod 163 and the filter plate 4, and the rotating rod 163 is reset by the No. 2 torsion spring. A No. 3 spring is arranged in the collecting box 165 and the L-shaped slide plate 166, and the L-shaped slide plate 166 is reset by the No. 3 spring. A No. 4 spring is arranged between the collecting box 165 and the trapezoidal block 168, and the trapezoidal block 168 is reset by the No. 4 spring.

[0030] A method for fixing a cooling fan structure of a dry-type transformer comprises the following steps: Step 1: Use the cooling fan 9 to drive air flow to cool the dry-type transformer to prevent the equipment from overheating, causing a short circuit in the equipment and affecting normal use; Step 2: The motor 5 rotates to drive the reciprocating screw 6 to rotate, and the reciprocating screw 6 rotates to drive the thread block 7 to reciprocate up and down, and the up and down reciprocating movement of the thread block 7 drives the cooling fan 9 to reciprocate up and down. The up and down reciprocating movement of the cooling fan 9 can create a stronger air flow, promote the circulation of air around the transformer, and thus improve the heat dissipation efficiency; Step 3: The threaded block 7 contacts the triangular block 11 during the up and down reciprocating motion, and the threaded block 7 pushes the triangular block 11 to move away from the threaded block 7. The triangular block 11 moves away from the threaded block 7, driving the dust filter plate 10 to move away from the threaded block 7. The dust filter plate 10 moves away from the threaded block 7 to push the dust stuck inside the heat sink out of the heat sink, thereby preventing the dust from clogging the heat sink and affecting the normal heat dissipation effect of the equipment. Step 4: The dust filter plate 10 drives the sliding plate 14 to move away from the threaded block 7. The sliding plate 14 moves away from the threaded block 7 and is squeezed by the rotating plate 13, causing the sliding plate 14 to slide downward. The sliding plate 14 slides downward to push down the impurities adhered to the dust filter plate 10, preventing dust clogging from affecting the normal heat dissipation of the equipment.

[0031] When the present embodiment is working, the threaded block 7 moves downward to drive the connecting rod 151 to move downward, the connecting rod 151 moves downward to drive the elastic telescopic rod 152 to move downward, the elastic telescopic rod 152 moves downward to drive the scraper 153 to move downward, the scraper 153 moves downward to scrape off the dust blocked on the filter plate 4, and prevents the dust from blocking the filter plate 4 and affecting the heat dissipation of the transformer by the circulating gas. At the same time, the elastic telescopic rod 152 can prevent the filter plate 4 from being scratched, thereby improving the applicability of the equipment. At the same time, the connecting rod 151 moves downward to contact the rotating plate 157, and the connecting rod 151 pushes the rotating plate 157 to rotate downward, and the rotating plate 157 rotates to drive the rotating shaft 156 to rotate downward. When 151 is separated from the rotating plate 157, the elastic force of the No. 2 spring itself will drive the rotating shaft 156 to reset, and the reset of the rotating shaft 156 will drive the rotating plate 157 to reset. When the connecting rod 151 moves upward, it will contact the rotating plate 157, and the rotating plate 157 will be limited by the limit block 158, so that the rotating plate 157 pushes the connecting rod 151 to move away from the filter plate 4. The movement of the connecting rod 151 away from the filter plate 4 will drive the elastic telescopic rod 152 and the scraper 153 to move away from the filter plate 4. The scraper 153 is separated from the filter plate 4 to prevent the scraper 153 from continuously scraping the filter plate 4 during the upward movement. Long-term scraping will cause the filter plate 4 to wear faster, affecting the service life of the equipment.

[0032] The scraper 153 moves downward to push the L-shaped plate 161 downward, and the downward movement of the L-shaped plate 161 will push the fixed plate 164 downward. The downward movement of the fixed plate 164 will cause the scraped dust to slide into the collection box 165 through the fixed plate 164 to collect the dust, thereby preventing the scraped dust from floating inside the transformer chassis 1, causing the dust to re-adhere to the filter plate 4 and affect the circulation of the airflow. At the same time, the downward rotation of the fixed plate 164 will push the L-shaped slide plate 166 downward, and the downward movement of the L-shaped slide plate 166 will drive the push rod 167 to move downward. The downward movement of the push rod 167 will push the trapezoidal block 168 to move away from the push rod 167, and the trapezoidal block 168 will move away from the push rod 167. The movable slide 169 moves in the direction away from the push rod 167. When the L-shaped plate 161 is separated from the squeezing of the fixed plate 164, the No. 2 torsion spring will drive the fixed plate 164 to reset. The reset of the fixed plate 164 will lose the squeezing of the L-shaped slide 166, so that the L-shaped slide 166 is reset under the elastic force of the No. 3 spring. The reset of the L-shaped slide 166 will drive the push rod 167 to reset. The reset of the push rod 167 will lose the squeezing of the trapezoidal block 168, so that the No. 4 spring drives the trapezoidal block 168 to reset. The reset of the trapezoidal block 168 will drive the slide 169 to reset. The reset of the slide 169 will push the fallen dust into the collection box 165 to prevent the dust from accumulating too high, resulting in the unreasonable utilization of the internal space of the collection box 165, affecting the collection effect.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A structure for fixing a cooling fan of a dry-type transformer, characterized in that: include: A transformer case (1), wherein a base (2) is fixedly mounted on the bottom of the transformer case (1), a heat dissipation groove is provided on the surface of the transformer case (1), a dust cover (3) is fixedly mounted on the outer wall of the transformer case (1), a filter plate (4) is fixedly mounted on the inner wall of the transformer case (1), and a dry-type transformer is arranged between the filter plates (4); An anti-blocking device, the anti-blocking device is arranged inside a transformer case (1), the anti-blocking device comprises a motor (5), a reciprocating screw rod (6), a threaded block (7), a fixed rod (8), a cooling fan (9), a dust filter plate (10), a triangular block (11), a connecting seat (12), a rotating plate (13) and a sliding plate (14), the motor (5) is fixedly mounted on the top of the base (2), the reciprocating screw rod (6) is fixedly mounted on the output end of the motor (5), the threaded block (7) is threadedly mounted on the circumferential surface of the reciprocating screw rod (6), the fixed rod (8) is fixedly mounted on the inner wall of the transformer case (1), and the fixed rod ( 8) slidingly penetrates the surface of the threaded block (7), the cooling fan (9) is fixedly mounted on the surface of the threaded block (7), the dust filter plate (10) is slidably mounted on the inner wall of the heat dissipation groove, the triangular block (11) is fixedly mounted on a side of the dust filter plate (10) close to the threaded block (7), the connecting seat (12) is fixedly mounted on the inner wall of the dust cover (3), the rotating plate (13) is rotatably mounted on the inner wall of the connecting seat (12), the sliding plate (14) is slidably mounted on a side of the dust filter plate (10) close to the dust cover (3), and the end of the rotating plate (13) away from the connecting seat (12) is rotatably mounted on the inner wall of the sliding plate (14); Wherein, a scraping device for preventing dust from adhering is provided on the filter plate (4), and an anti-floating device is provided at the bottom of the inner wall of the transformer case (1).

2. The structure for fixing a cooling fan of a dry-type transformer according to claim 1 is characterized in that: A No. 1 spring is provided between the dust filter plate (10) and the heat dissipation slot, and a No. 2 spring is provided between the sliding plate (14) and the dust filter plate (10).

3. The structure for fixing a cooling fan of a dry-type transformer according to claim 2 is characterized in that: The scraping device comprises a connecting rod (151), an elastic telescopic rod (152) and a scraper (153); the connecting rod (151) is slidably mounted on the bottom of the threaded block (7); the elastic telescopic rod (152) is fixedly mounted on an end of the connecting rod (151) away from the threaded block (7); and the scraper (153) is fixedly mounted on the free end of the elastic telescopic rod (152).

4. The structure for fixing a cooling fan of a dry-type transformer according to claim 3 is characterized in that: A fixing frame (154) is fixedly mounted on the inner wall of the transformer case (1), a long plate (155) is fixedly mounted on the surface of the fixing frame (154), a rotating shaft (156) is rotatably mounted on the surface of the long plate (155), a rotating plate (157) is fixedly mounted on the circumferential surface of the rotating shaft (156), and a limiting block (158) is fixedly mounted on the circumferential surface of the rotating shaft (156).

5. The structure for fixing a cooling fan of a dry-type transformer according to claim 4 is characterized in that: The scraper (153) is in contact with the surface of the filter plate (4), a first torsion spring is provided between the long plate (155) and the rotating shaft (156), and the limit block (158) is in contact with the surface of the long plate (155).

6. The structure for fixing a cooling fan of a dry-type transformer according to claim 5, characterized in that: The anti-floating device comprises an L-shaped plate (161), a baffle (162), a rotating rod (163), a fixed plate (164) and a collection box (165); the L-shaped plate (161) is slidably mounted on the surface of the filter plate (4); the baffle (162) is fixedly mounted on the inner wall of the transformer case (1); the rotating rod (163) is rotatably mounted on a surface of the filter plate (4) close to the reciprocating screw rod (6); the fixed plate (164) is fixedly mounted on the circumferential surface of the rotating rod (163); and the collection box (165) is slidably mounted on the bottom of the inner wall of the transformer case (1).

7. The structure for fixing a cooling fan of a dry-type transformer according to claim 6, characterized in that: An L-shaped slide plate (166) is slidably mounted on the inner wall of the collection box (165); a push rod (167) is fixedly mounted on a side of the L-shaped slide plate (166) away from the inner wall of the collection box (165); a trapezoidal block (168) is slidably mounted on the inner wall of the collection box (165); a slide plate (169) is fixedly mounted on a side of the trapezoidal block (168) away from the push rod (167).

8. The structure for fixing a cooling fan of a dry-type transformer according to claim 7, characterized in that: A No. 2 torsion spring is provided between the rotating rod (163) and the filter plate (4), a No. 3 spring is provided inside the collecting box (165) and between the L-shaped slide plate (166), and a No. 4 spring is provided between the collecting box (165) and the trapezoidal block (168).

9. A method for fixing a dry-type transformer cooling fan structure, using the structure for fixing a dry-type transformer cooling fan according to claim 8, characterized in that: The following steps are involved: Step 1: Use the cooling fan (9) to drive air flow to cool the dry-type transformer to prevent the equipment from overheating, causing a short circuit in the equipment and affecting normal use; Step 2: The motor (5) rotates to drive the reciprocating screw (6) to rotate, and the reciprocating screw (6) rotates to drive the threaded block (7) to move up and down, and the up and down reciprocating movement of the threaded block (7) drives the cooling fan (9) to move up and down, and the up and down reciprocating movement of the cooling fan (9) can create a stronger air flow, promote the circulation of air around the transformer, and thus improve the heat dissipation efficiency; Step 3: The threaded block (7) contacts the triangular block (11) during the up and down reciprocating movement, and the threaded block (7) pushes the triangular block (11) to move in a direction away from the threaded block (7). The triangular block (11) moves in a direction away from the threaded block (7), driving the dust filter plate (10) to move in a direction away from the threaded block (7). The dust filter plate (10) moves in a direction away from the threaded block (7) to push the dust stuck in the heat sink out of the heat sink, thereby preventing the dust from clogging the heat sink and affecting the normal heat dissipation effect of the equipment. Step 4: The dust filter plate (10) moves away from the threaded block (7), driving the sliding plate (14) to move away from the threaded block (7). The sliding plate (14) moves away from the threaded block (7) and is squeezed by the rotating plate (13), causing the sliding plate (14) to slide downward. The sliding plate (14) slides downward to push down impurities adhering to the dust filter plate (10), thereby preventing dust from clogging and affecting the normal heat dissipation of the equipment.

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