A high-safety transformer with overheat protection

Abstract

The present invention discloses a high-safety transformer with overheat protection, and relates to the technical field of transformers. The present invention provides a high-safety transformer with overheat protection, comprising a transformer body, and also comprising a cooling box, wherein the cooling box is fixedly connected to the bottom end of the transformer body, equidistantly distributed condensing pipes are fixedly connected in the cooling box, and equidistantly distributed oil pipelines are connected between the transformer body and the cooling box, a suction pump is fixedly connected to the cooling box, and equidistantly distributed return pipes are connected between the cooling box and the transformer body, a first partition is fixedly connected in the cooling box, and a second partition is fixedly connected in the cooling box. The suction pump controls the insulating oil to circulate through the oil pipeline and the return pipe in the transformer body and the cooling box for cooling, and the first partition and the second partition are provided to isolate the front and rear parts of the cooling box, so that the insulating oil can be separated in batches for cooling and cooling, and the cooling time of the insulating oil can be extended, and the cooling effect can also be improved.

Description

Technical Field

[0001] The invention relates to the technical field of transformers, and in particular to a high-safety transformer with overheat protection. Background Art

[0002] In the power system, transformers are key equipment, and their stability and safety directly affect the operation of the entire power grid. Most existing transformers are equipped with basic protection functions, such as overload protection, short-circuit protection, etc., but there are still deficiencies in overheating protection. Overheating is a common problem in transformer operation. Insulating oil plays a role in cooling and insulation in transformers. When the oil temperature is too high, it will accelerate the aging of the insulating material and reduce its insulation performance. Excessive temperature will not only reduce the service life of the transformer, but may also cause safety accidents such as fire in serious cases.

[0003] In order to solve the above problems, we propose a high-safety transformer with overheat protection. This transformer can circulate and cool the insulating oil to avoid safety hazards caused by overheating of the transformer. Summary of the invention

[0004] In order to overcome the disadvantage that overheating of insulating oil affects the insulation performance and the service life of the transformer, the present invention provides a high-safety transformer with overheat protection.

[0005] The technical implementation scheme of the present invention is: a high-safety transformer with overheat protection, including a transformer body and a cooling box, the cooling box is fixedly connected to the bottom end of the transformer body, equidistantly distributed condensing tubes are fixedly connected in the cooling box, the transformer body and the cooling box are connected with equidistantly distributed oil pipelines, a suction pump is fixedly connected to the cooling box, and equidistantly distributed return pipes are connected between the cooling box and the transformer body, a first partition is fixedly connected in the cooling box, a second partition is fixedly connected in the cooling box, a connecting frame is connected between the first partition and the second partition, a transversely symmetrical guide block is fixedly connected to the first partition, and a block is slidably connected between the transversely symmetrical guide blocks, and the block blocks block the first partition.

[0006] Optionally, through holes are formed on both the first partition plate and the second partition plate.

[0007] Optionally, the stopper is made of polyethylene or foam plastic.

[0008] Optionally, a cooling mechanism for secondary cooling of the insulating oil is also included. The cooling mechanism is arranged in a cooling box. The cooling mechanism includes a hollow frame. The hollow frame is fixedly connected to the cooling box. An oil spray pipe is connected to the hollow frame. Laterally symmetrical rotating nozzles are rotatably connected to the hollow frame. Cooling cylinders are connected between the laterally symmetrical rotating nozzles. The oil spray pipe is located in the cooling cylinder. A rotating component for controlling the rotation of the cooling cylinder is provided on the hollow frame.

[0009] Optionally, the rotating assembly includes a gear ring, which is fixedly connected to the cooling cylinder, a motor is fixedly connected to the hollow frame, a first gear is fixedly connected to the output shaft of the motor, and the first gear is meshed with the gear ring.

[0010] Optionally, a supplementary mechanism for accelerating the flow rate of insulating oil in the two cavities is also included. The supplementary mechanism is arranged on the second partition, and the supplementary mechanism includes a guide rod, which is fixedly connected to the second partition, and a baffle is slidably connected to the guide rod. An electric push rod is fixedly connected to the second partition, and the telescopic end of the electric push rod is fixedly connected to the baffle. A connecting frame is fixedly connected between the bottom of the first partition and the second partition, and a temperature sensor is fixedly connected to the transformer body, and the temperature sensor is electrically connected to the electric push rod.

[0011] Optionally, it also includes a cleaning mechanism for cleaning impurities in the insulating oil. The cleaning mechanism is arranged on the transformer body. The cleaning mechanism includes an isolation plate, which is fixedly connected to the transformer body. The isolation plate is rotatably connected to equidistantly distributed capture plates, and the capture plate is fixedly connected to a second gear. A sliding rod is slidably connected to the isolation plate, and a first spring is connected between the sliding rod and the isolation plate. A rack is fixedly connected to the sliding rod, and the rack is meshed with the second gear. The cooling box and the cooling cylinder are provided with an extrusion assembly for extruding the rack to move.

[0012] Optionally, the capture plate is a filter structure for fishing out impurities.

[0013] Optionally, the extrusion assembly includes a mating block, which is fixedly connected to the rack, a laterally symmetrical extrusion rod is slidably connected to the cooling box, a second spring is connected between the extrusion rod and the cooling box, and a laterally symmetrical cam is fixedly connected to the cooling cylinder, and the cam is extrusion-matched with the adjacent extrusion rod.

[0014] Optionally, the extrusion rod is L-shaped, the matching block is triangular, and the extrusion rod is extruded and matched with the adjacent matching block.

[0015] The present invention has the following advantages: 1. The suction pump controls the insulating oil to circulate through the oil delivery pipe and the return pipe in the transformer body and the cooling box for cooling. By arranging the first partition and the second partition to isolate the front and rear parts of the cooling box, the insulating oil can be cooled in batches, and the cooling time of the insulating oil can be extended to improve the cooling effect.

[0016] 2. The insulating oil transported by the oil pipeline will enter the hollow frame and be sprayed out through the oil spray pipe. The sprayed insulating oil is cooled in the cooling cylinder and finally sprayed out through the rotating nozzle. In this way, the cooling time can be further extended.

[0017] 3. When the temperature sensor detects that the temperature of the insulating oil in the transformer body is higher than the preset value, the baffle slides upward and opens. At this time, the insulating oil in the front cavity of the cooling box can directly enter the rear cavity through the connecting frame for replenishment, ensuring that there is enough cooled insulating oil to enter the transformer body for replacement and cooling, so as to ensure the normal operation of the transformer body.

[0018] 4. The capture plate continuously rotates forward and reversely to salvage and filter the impurities in the insulating oil, and the filtered impurities can be deposited in the isolation plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 It is a schematic cross-sectional view of the transformer body, cooling box, return pipe and other components of the present invention.

[0021] Figure 3 It is a schematic cross-sectional view of the cooling box, condenser tube, first baffle and other components of the present invention.

[0022] Figure 4 It is a three-dimensional structural schematic diagram of the first partition plate, the second partition plate, the connecting frame and other components of the present invention.

[0023] Figure 5 It is a three-dimensional structural schematic diagram of the hollow frame, rotating nozzle, cooling cylinder and other components of the present invention.

[0024] Figure 6 It is a schematic cross-sectional view of the hollow frame, the oil injection pipe, the cooling tube and other components of the present invention.

[0025] Figure 7 It is a three-dimensional structural schematic diagram of the guide rod, baffle, electric push rod and connecting frame and other components of the present invention.

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the isolation plate, capture plate, temperature sensor and other components of the present invention.

[0027] Fig. 9 It is a partial cross-sectional structural schematic diagram of the isolation plate, the capture plate, the second gear and other components of the present invention.

[0028] Fig.10 It is a schematic diagram of the enlarged three-dimensional structure of part A of the present invention.

[0029] Fig.11 It is a three-dimensional structural schematic diagram of the rotary nozzle, cooling cylinder and cam of the present invention.

[0030] The meaning of the reference numerals in the figure are as follows: 1: transformer body, 2: cooling box, 201: condenser, 3: oil pipeline, 4: suction pump, 5: return pipe, 6: first partition, 7: second partition, 8: connecting frame, 9: guide block, 10: block, 11: hollow frame, 12: oil injection pipe, 13: rotating nozzle, 14: cooling cylinder, 15: ring gear, 16: motor, 17: first gear, 18: guide rod, 19: baffle, 20: electric push rod, 21: connecting frame, 211: temperature sensor, 22: isolation plate, 23: capture plate, 24: second gear, 241: slide rod, 242: first spring, 25: rack, 26: matching block, 27: extrusion rod, 28: second spring, 29: cam. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that the directional terms such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and are not specific limitations of the present invention.

[0032] Embodiment 1: A high safety transformer with overheat protection, such as Figure 1-Figure 4 As shown, it includes a transformer body 1, a cooling box 2, a condensing pipe 201, an oil pipeline 3, a suction pump 4, a return pipe 5, a first partition 6, a second partition 7, a connecting frame 8, a guide block 9 and a stopper 10. The lower part of the transformer body 1 is fixedly connected to the cooling box 2, and the cooling box 2 is fixedly connected to the condensing pipes 201 distributed evenly. The lower part of the front side of the transformer body 1 and the front side of the cooling box 2 are connected to the oil pipelines 3 distributed evenly. The left side of the cooling box 2 is fixedly connected to the suction pump 4, and the rear side of the cooling box 2 and the upper part of the rear side of the transformer body 1 are connected to each other. It is connected with equidistantly distributed return pipes 5, a first partition 6 is fixedly connected to the front of the cooling box 2, a through hole is opened on the upper part of the first partition 6, a second partition 7 is fixedly connected to the front of the cooling box 2, a through hole is opened on the lower part of the second partition 7, a connecting frame 8 is connected between the through holes of the first partition 6 and the second partition 7, a left-right symmetrical guide block 9 is fixedly connected to the front side of the first partition 6, a stopper 10 is slidably connected between the left and right guide blocks 9, the stopper 10 blocks the through hole on the first partition 6, and the stopper 10 is made of polyethylene or foam plastic.

[0033] When using the device, the cooling box 2 is divided into two front and rear cavities by the first partition 6, the second partition 7 and the block 10. During the use of the transformer body 1, under the action of the suction pump 4, the insulating oil will circulate in the transformer body 1 and the cooling box 2 through the oil pipe 3 and the return pipe 5. When the insulating oil circulates, it will first enter the front cavity of the cooling box 2 and be initially cooled through the condenser 201. As the insulating oil in the front cavity of the cooling box 2 increases, the block 10 will slide upward under the action of buoyancy. After the block 10 slides upward, it will no longer block the first partition 6. At this time, the insulating oil in the front cavity will pass through the first partition 6, the second partition 7 and the connecting frame 8 to flow to the rear cavity for cooling again, and then flow into the transformer body 1 to replace the heated insulating oil. By setting the first partition 6 and the second partition 7 to isolate the front and rear parts of the cooling box 2, the insulating oil can be separated and cooled, so that the insulating oil undergoes two decreasing cooling treatments, and extending the cooling time of the insulating oil can also improve the cooling effect.

[0034] Embodiment 2: Based on embodiment 1, Figure 5 and Figure 6 As shown, it also includes a cooling mechanism for secondary cooling of the insulating oil, the cooling mechanism includes a hollow frame 11, an oil spray pipe 12, a rotating nozzle 13, a cooling cylinder 14 and a rotating component. The hollow frame 11 is fixedly connected to the front side of the cooling box 2, the rear of the hollow frame 11 is connected to the oil spray pipe 12, the rear of the hollow frame 11 is rotatably connected to the left and right symmetrical rotating nozzles 13, the cooling cylinder 14 is connected between the left and right rotating nozzles 13, the oil spray pipe 12 is located in the cooling cylinder 14, and a rotating component for controlling the rotation of the cooling cylinder 14 is provided on the hollow frame 11.

[0035] like Figure 5 and Figure 6 As shown, the rotating assembly includes a ring gear 15, a motor 16 and a first gear 17. The ring gear 15 is fixedly connected to the right part of the cooling cylinder 14, the motor 16 is fixedly connected to the right part of the hollow frame 11, and the first gear 17 is fixedly connected to the output shaft of the motor 16. The first gear 17 is meshed with the ring gear 15.

[0036] By setting up a cooling mechanism, the insulating oil can be cooled secondary to further extend the cooling time. The specific operation is as follows: the insulating oil transported by the oil pipeline 3 will enter the hollow frame 11, and the insulating oil in the hollow frame 11 will enter the oil spray pipe 12. The insulating oil is sprayed out by rotating the oil spray pipe 12, and the insulating oil is cooled in the cooling cylinder 14 and finally sprayed out through the rotating nozzle 13. At the same time, the motor 16 controls the engagement of the first gear 17 and the ring gear 15 to drive the rotating nozzle 13 and the cooling cylinder 14 to rotate. The rotating nozzle 13 rotates to disperse and spray the cooled insulating oil to improve the cooling effect, and the rotation of the cooling cylinder 14 can prevent the hot insulating oil from accumulating in the lower part, resulting in overheating of the lower part of the cooling cylinder 14.

[0037] like Figure 7 and Figure 8 As shown, a supplementary mechanism for accelerating the flow rate of insulating oil in the two cavities is also included, and the supplementary mechanism includes a guide rod 18, a baffle 19, an electric push rod 20, a connecting frame 21 and a temperature sensor 211. The guide rod 18 is fixedly connected to the left portion of the rear side of the second partition 7, and the baffle 19 is slidably connected to the guide rod 18. The electric push rod 20 is fixedly connected to the right portion of the rear side of the second partition 7, and the telescopic end of the electric push rod 20 is fixedly connected to the baffle 19. A connecting frame 21 is fixedly connected between the bottom of the first partition 6 and the second partition 7. A temperature sensor 211 is fixedly connected in the transformer body 1, and the temperature sensor 211 is electrically connected to the electric push rod 20.

[0038] By setting up a replenishing mechanism, when the insulating oil in the transformer body 1 is overheated, the insulating oil in the front and rear cavities of the cooling box 2 can be controlled to flow quickly, and then the cooled insulating oil can be replenished into the transformer body 1 for replacement and cooling. The specific operation is as follows: during the use of the transformer body 1, the insulating oil in the transformer body 1 will be naturally consumed. When the insulating oil is consumed to a certain amount, there will not be enough cooled insulating oil in the rear cavity of the cooling box 2 to be input into the transformer body 1. When the temperature sensor 211 detects that the temperature of the insulating oil in the transformer body 1 is higher than the preset value, the temperature sensor 211 will control The electric push rod 20 is shortened, and the shortened electric push rod 20 drives the baffle 19 to slide upward and open. At this time, the insulating oil in the front cavity of the cooling box 2 can directly enter the rear cavity through the connecting frame 21 for replenishment, ensuring that there is enough cooled insulating oil to enter the transformer body 1 for replacement and cooling, so as to ensure the normal operation of the transformer body 1. When the temperature of the insulating oil in the transformer body 1 drops, the temperature sensor 211 controls the electric push rod 20 to extend, thereby driving the baffle 19 to slide downward and reset. When the staff regularly performs maintenance and inspection on the transformer body 1, the staff will add insulating oil.

[0039] like Figure 8 , Fig. 9 , Fig.10 and Fig.11As shown, it also includes a cleaning mechanism for cleaning impurities in the insulating oil, the cleaning mechanism includes an isolation plate 22, a capture plate 23, a second gear 24, a slide bar 241, a first spring 242, a rack 25 and an extrusion assembly. The lower part of the transformer body 1 is fixedly connected to the isolation plate 22, and the equidistantly distributed capture plates 23 are rotatably connected to the isolation plate 22. The capture plate 23 is a filter structure for salvaging impurities. The front part of the capture plate 23 is fixedly connected to the second gear 24, and the front part of the isolation plate 22 is slidably connected to the slide bar 241. The first spring 242 is connected between the slide bar 241 and the isolation plate 22. The rack 25 is fixedly connected to the slide bar 241, and the rack 25 is meshed with the second gear 24. The cooling box 2 and the cooling cylinder 14 are provided with an extrusion assembly for squeezing the rack 25 to move.

[0040] like Figure 8 , Fig. 9 , Fig.10 and Fig.11 As shown, the extrusion assembly includes a matching block 26, an extrusion rod 27, a second spring 28 and a cam 29. The lower side of the rack 25 is fixedly connected to two left and right matching blocks 26. The front part of the cooling box 2 is slidably connected to left and right symmetrical extrusion rods 27. The extrusion rod 27 is L-shaped, and the matching block 26 is triangular. The extrusion rod 27 is extruded and matched with the adjacent matching blocks 26. A second spring 28 is connected between the extrusion rod 27 and the cooling box 2. The left and right parts of the cooling cylinder 14 are fixedly connected to cams 29, and the cams 29 are extruded and matched with the adjacent extrusion rods 27.

[0041] During the use of insulating oil, external dust, metal particles and other impurities will enter the oil. By setting up a cleaning mechanism, the impurities in the insulating oil can be cleaned. The specific operation is as follows: the cooling cylinder 14 rotates to drive the cam 29 to rotate, and the rotation of the cam 29 pushes the extrusion rod 27 to slide upward, and the second spring 28 is deformed. The extrusion rod 27 slides upward to squeeze the matching block 26 to move to the right. The matching block 26 moves to the right and drives the rack 25 to move to the right. The slide bar 241 slides to the right accordingly, and the first spring 242 is deformed. The rack 25 moves to the right and drives the second gear 24 to rotate, and then drives the capture plate 23 to rotate. When the cam 29 rotates to disengage from the extrusion rod 27, Under the action of the second spring 28 returning to its original position, the extrusion rod 27 slides downward and returns to its original position, and no longer squeezes the matching block 26. Under the action of the first spring 242 returning to its original position, the slide bar 241 drives the rack 25 to move to the left and return to its original position. The rack 25 moves to the left and drives the second gear 24 and the capture plate 23 to reverse. When the cam 29 rotates to contact the extrusion rod 27 again, the above-mentioned action is repeated to make the capture plate 23 rotate forward and backward continuously. The rotating capture plate 23 can increase the adhesion of impurities in the flowing insulating oil. The impurities in the insulating oil can be salvaged and filtered through the capture plate 23. The filtered impurities can be deposited in the isolation plate 22 to prevent the impurities from floating in the insulating oil due to the flow of the insulating oil.

[0042] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-safety transformer with overheat protection, comprising a transformer body (1), characterized in that: The transformer body (1) is also provided with a cooling box (2), the cooling box (2) being fixedly connected to the bottom end of the transformer body (1), the cooling box (2) being fixedly connected with equidistantly distributed condensing pipes (201), the transformer body (1) and the cooling box (2) being connected with equidistantly distributed oil pipelines (3), the cooling box (2) being fixedly connected with a suction pump (4), the cooling box (2) and the transformer body (1) being connected with equidistantly distributed return pipes (5), the cooling box (2) being fixedly connected with a first partition (6), the cooling box (2) being fixedly connected with a second partition (7), the first partition (6) and the second partition (7) Through holes are formed on the first partition plate (6), a connecting frame (8) is connected between the first partition plate (6) and the second partition plate (7), a transversely symmetrical guide block (9) is fixedly connected to the first partition plate (6), a stopper (10) is slidably connected between the transversely symmetrical guide blocks (9), the stopper (10) blocks the through hole on the first partition plate (6), and the cooling box 2 is divided into two front and rear cavities by the first partition plate 6, the second partition plate 7 and the stopper 10. During the use of the transformer body 1, the insulating oil circulates in the transformer body 1 and the cooling box 2, and the insulating oil first enters the front cavity of the cooling box 2 when circulating. After the condenser 201 is initially cooled, the block 10 slides upward and opens, and the insulating oil in the front cavity flows through the first partition 6, the second partition 7 and the connecting frame 8 to the rear cavity for cooling again, and finally flows into the transformer body 1 to replace the heated insulating oil. By arranging the first partition 6 and the second partition 7 to isolate the front and rear parts of the cooling box 2, the insulating oil can be separated and cooled, so that the insulating oil is subjected to two decreasing cooling treatments, which can extend the cooling time of the insulating oil and improve the cooling effect. It also includes a supplementary mechanism for accelerating the flow rate of the insulating oil in the two cavities. The charging mechanism is arranged on the second partition (7), and comprises a guide rod (18), the guide rod (18) is fixedly connected to the second partition (7), a baffle (19) is slidably connected to the guide rod (18), an electric push rod (20) is fixedly connected to the second partition (7), a telescopic end of the electric push rod (20) is fixedly connected to the baffle (19), a connecting frame (21) is fixedly connected between the bottom of the first partition (6) and the second partition (7), a temperature sensor (211) is fixedly connected inside the transformer body (1), and the temperature sensor (211) is electrically connected to the electric push rod (20).

2. A high safety transformer with overheat protection according to claim 1, characterized in that: The material of the stopper (10) is polyethylene or foam plastic.

3. A high safety transformer with overheat protection according to claim 2, characterized in that: The invention also comprises a cooling mechanism for performing secondary cooling on the insulating oil. The cooling mechanism is arranged in the cooling box (2). The cooling mechanism comprises a hollow frame (11). The hollow frame (11) is fixedly connected to the cooling box (2). An oil spray pipe (12) is connected to the hollow frame (11). Laterally symmetrical rotating nozzles (13) are rotatably connected to the hollow frame (11). A cooling cylinder (14) is connected between the laterally symmetrical rotating nozzles (13). The oil spray pipe (12) is located in the cooling cylinder (14). A rotating assembly for controlling the rotation of the cooling cylinder (14) is provided on the hollow frame (11).

4. A high safety transformer with overheat protection according to claim 3, characterized in that: The rotating assembly comprises a ring gear (15), the ring gear (15) is fixedly connected to the cooling cylinder (14), a motor (16) is fixedly connected to the hollow frame (11), a first gear (17) is fixedly connected to the output shaft of the motor (16), and the first gear (17) is meshed with the ring gear (15).

5. A high safety transformer with overheat protection according to claim 4, characterized in that: The utility model also comprises a cleaning mechanism for cleaning impurities in the insulating oil. The cleaning mechanism is arranged on the transformer body (1). The cleaning mechanism comprises an isolation plate (22). The isolation plate (22) is fixedly connected to the transformer body (1). The isolation plate (22) is rotatably connected to equidistantly distributed capture plates (23). The capture plates (23) are fixedly connected to a second gear (24). The isolation plate (22) is slidably connected to a slide bar (241). A first spring (242) is connected between the slide bar (241) and the isolation plate (22). A rack (25) is fixedly connected to the slide bar (241). The rack (25) meshes with the second gear (24). The cooling box (2) and the cooling cylinder (14) are provided with an extrusion assembly for extruding the rack (25) to move.

6. A high safety transformer with overheat protection according to claim 5, characterized in that: The capture plate (23) is a filter structure and is used to salvage impurities.

7. A high safety transformer with overheat protection according to claim 6, characterized in that: The extrusion assembly comprises a matching block (26), the matching block (26) is fixedly connected to the rack (25), a transversely symmetrical extrusion rod (27) is slidably connected to the cooling box (2), a second spring (28) is connected between the extrusion rod (27) and the cooling box (2), and a transversely symmetrical cam (29) is fixedly connected to the cooling cylinder (14), and the cam (29) is extrusion-matched with the adjacent extrusion rod (27).

8. A high safety transformer with overheat protection according to claim 7, characterized in that: The extrusion rod (27) is L-shaped, the matching block (26) is triangular, and the extrusion rod (27) is extruded and matched with the adjacent matching block (26).

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