Oil-immersed power transformer

Abstract

The utility model belongs to the technical field of power transformers, and discloses an oil-immersed power transformer which comprises a power transformer body, a hydraulic lead screw lifter is fixedly arranged on the top face of the power transformer body, a cover plate is fixedly arranged at the tail end of a main shaft of the hydraulic lead screw lifter, and a storage box is arranged on the bottom face of the cover plate. A motor is fixedly arranged in the storage box, a main gear is fixedly arranged at the tail end of a main shaft of the motor, an auxiliary gear is connected to the outer side of the main gear in a meshed mode, a connecting shaft is rotationally arranged in the auxiliary gear, and a large gear is fixedly arranged at one end of the connecting shaft and rotationally connected with the cover plate. The transformer oil tank cleaning device has the advantages that the transformer oil tank can be automatically cleaned, manual cleaning work is not needed, the working time is shortened, the working efficiency is improved, and meanwhile the transformer oil tank cleaning device has the advantages that normal operation of a transformer is guaranteed, and damage is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of power transformers, in particular to an oil-immersed power transformer. Background Art

[0002] Distribution transformers are one of the key devices in the power supply and distribution systems of industrial and mining enterprises and civil buildings. They step down the 10kV or 35kV network voltage to the 230 / 400V bus voltage used by users. This type of product is suitable for AC 50Hz and can be used indoors or outdoors, and can also be installed on poles. Its structure includes an oil tank, a cover on the upper part of the oil tank, terminals on the cover, an iron core inside the oil tank, and windings on the iron core. The oil tank contains oil. During operation of an oil-immersed power transformer, the heat of the windings and iron core is first transferred to the oil, and the oil is used as a cooling medium to cool the coils and windings.

[0003] At the same time, the patent specification with publication number CN 212724982 U discloses an oil-immersed power transformer, including an iron core assembly, an oil tank, the oil tank is arranged on the iron core assembly, and the top of the oil tank is set as an opening; the tank cover, the tank cover is arranged above the oil tank, the first bushing, the first bushing is fixedly mounted on the top of the tank cover, three second bushings, the three second bushings are all fixedly mounted on the top of the tank cover, three third bushings, the three third bushings are all fixedly mounted on the top of the tank cover, four first hangers, the four first hangers are all fixedly mounted on the tank cover, an oil level gauge, the oil level gauge is arranged on the top of the tank cover, and transformer oil, the transformer oil is poured into the oil tank.

[0004] However, in the implementation of relevant technologies, it was found that the above-mentioned oil-immersed power transformer has the following problems: the oil tank of the transformer needs to be manually cleaned after use, and manual cleaning of the oil tank takes not only a long time, but also if the staff is negligent for a moment, it will lead to a decrease in the completion of the cleaning work. The longer it takes, the lower the work efficiency. If the cleaning work is not done well, the use effect of the oil tank will be affected.

[0005] Therefore, in order to solve the above problems, an oil-immersed power transformer is proposed. Utility Model Content

[0006] In order to solve the problems raised in the above background technology, the utility model provides an oil-immersed power transformer, which has the advantage of automatically cleaning the transformer without manual cleaning work, which not only reduces the time spent on cleaning and improves work efficiency, but also prevents omissions during work, thereby preventing the subsequent use of the oil tank. At the same time, it has the advantages of ensuring the normal operation of the transformer and reducing damage.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an oil-immersed power transformer, comprising a power transformer body, a hydraulic screw lifter fixedly provided on the top surface of the power transformer body, a cover plate fixedly provided on the main shaft end of the hydraulic screw lifter, a storage box provided on the bottom surface of the cover plate, a motor fixedly provided inside the storage box, a main gear fixedly provided on the main shaft end of the motor, a sub-gear connected to the outer meshing teeth of the main gear, a connecting shaft rotatably provided inside the sub-gear, a large gear fixedly provided on one end of the connecting shaft, and the large gear is rotatably connected to the cover plate, and an extrusion disk fixedly provided on the other end of the connecting shaft.

[0008] Preferably, a scraper is slidably provided on the bottom surface of the storage box, a rack is fixedly provided on the outer side of the scraper, and the rack is meshingly connected with the large gear.

[0009] Preferably, an oil tank is provided inside the power transformer body, a water tank is fixedly provided outside the oil tank, and cooling water is provided inside the water tank.

[0010] Preferably, a plug is threadedly connected to the bottom surface of the power transformer body, and the plug passes through the oil tank.

[0011] Preferably, cleaning condensate is provided inside the storage box, a water outlet is provided on the outside of the storage box, and a cleaner is fixedly provided on the outside of the storage box.

[0012] Preferably, a spring is fixedly provided inside the storage box, and the other end of the spring is in contact with the partition, and the partition is engaged with the storage box.

[0013] Preferably, a gradient boss is fixedly provided on the top of the extrusion disk, and the gradient boss is in contact with the partition.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] The utility model pushes the storage box to move downward along the inside of the oil tank through a hydraulic screw lifter, and a plurality of small cleaners are arranged around the storage box, which can clean the inner wall of the oil tank while the storage box moves. At the same time, cleaning condensate is installed inside the storage box, and the cleaning condensate flows out from the water outlet while the storage box moves, and cleans the inner wall of the oil tank again. This device has the advantage of automatically cleaning the transformer oil tank without manual cleaning work, which not only reduces the time spent on cleaning and improves work efficiency, but also prevents omissions during work, thereby affecting the subsequent use effect of the oil tank, and has the advantages of ensuring the normal operation of the transformer and reducing damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of an oil-immersed power transformer proposed in the utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of an oil-immersed power transformer proposed in the utility model;

[0018] Figure 3 This is a schematic diagram of the motor installation structure proposed by the utility model;

[0019] Figure 4 This is a schematic diagram of the spring installation structure proposed by the utility model;

[0020] Figure 5 This is a schematic diagram of the cross-sectional structure of the storage box proposed by the present utility model.

[0021] In the figure: 1. Power transformer body; 2. Hydraulic screw lifter; 3. Oil tank; 4. Water tank; 5. Plug; 6. Cover plate; 7. Partition; 8. Storage box; 9. Water outlet; 10. Scraper; 11. Rack; 12. Motor; 13. Main gear; 14. Sub-gear; 15. Large gear; 16. Extrusion plate; 17. Spring; 18. Gradient boss; 19. Connecting shaft. DETAILED DESCRIPTION

[0022] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0023] like Figures 1 to 5 As shown, the utility model provides an oil-immersed power transformer, including a power transformer body 1, a hydraulic screw lifter 2 is fixedly provided on the top surface of the power transformer body 1, a cover plate 6 is fixedly provided on the main shaft end of the hydraulic screw lifter 2, a storage box 8 is provided on the bottom surface of the cover plate 6, a motor 12 is fixedly provided inside the storage box 8, a main gear 13 is fixedly provided on the main shaft end of the motor 12, a sub-gear 14 is connected to the outer teeth of the main gear 13, a connecting shaft 19 is rotatably provided inside the sub-gear 14, a large gear 15 is fixedly provided on one end of the connecting shaft 19, and the large gear 15 is rotatably connected to the cover plate 6, and an extrusion disk 16 is fixedly provided on the other end of the connecting shaft 19.

[0024] Specifically, a scraper 10 is slidingly provided on the bottom surface of the storage box 8, and a rack 11 is fixedly provided on the outside of the scraper 10, and the rack 11 is meshingly connected with the large gear 15. This part of the structure can clean the inside of the oil tank 3, thereby reducing working time and improving efficiency.

[0025] Furthermore, an oil tank 3 is provided inside the power transformer body 1 , a water tank 4 is fixedly provided outside the oil tank 3 , and cooling water is provided inside the water tank 4 , and the cooling water can further cool the oil tank 3 .

[0026] Furthermore, a plug 5 is threadedly connected to the bottom surface of the power transformer body 1, and the plug 5 passes through the oil tank 3. When the plug 5 is unscrewed, the cleaned oil stains and other debris will flow out along the position of the plug 5.

[0027] It is worth noting that cleaning condensate is provided inside the storage box 8, a water outlet 9 is provided on the outside of the storage box 8, and a cleaner is fixedly provided on the outside of the storage box 8. The cleaning condensate flows from the water outlet 9 to the cleaner, and then the cleaner can better remove the oil stains inside the oil tank 3 due to the addition of cleaning condensate.

[0028] It is worth noting that a spring 17 is fixedly provided inside the storage box 8, and the other end of the spring 17 is in contact with the partition 7. When the partition 7 is engaged with the storage box 8, the spring 17 is responsible for popping out the partition 7.

[0029] It is worth mentioning that a gradient boss 18 is fixedly provided on the top of the extrusion disc 16 , and the gradient boss 18 is in contact with the partition 7 , and the gradient boss 18 pushes the partition 7 to squeeze out the clean condensate.

[0030] Among them, the motor 12 is the existing technology and will not be described in detail. At the same time, the utility model also includes a power supply, a controller and a switch, which are not the main technical points of this patent and will not be described in detail. The "front, back, left and right" perspectives of this device are as follows: Figure 1 The direction shown in the figure is the reference.

[0031] Working principle and process:

[0032] An oil tank 3 and a water tank 4 are provided inside the power transformer body 1. The oil tank 3 is provided with oil, which is used as a cooling medium to cool the coils and windings, and the water tank 4 is filled with water, which is used to further cool the oil inside the oil tank 3 to prevent danger caused by excessive temperature. A cover plate 6 is provided on the top surface of the oil tank 3. The function of the cover plate 6 is to block when cleaning the inside of the oil tank 3 to prevent oil stains from splashing. A hydraulic screw lifter 2 is fixedly provided on the top surface of the power transformer body 1. The hydraulic screw lifter 2 pushes the storage box 8 to move along the inside of the oil tank 3. At the same time, a plurality of cleaners are provided around the storage box 8. The cleaners can clean the inside of the oil tank 3. At the same time, the motor 12 drives the main gear | 13 to start rotating, and the main gear | 13 drives the sub-gear 14 to rotate, and the sub-gear 14 rotates. The wheel 14 is sleeved on the outside of the connecting shaft 19, and the connecting shaft 19 is fixedly connected to the extrusion plate 16 and the large gear 15 at the same time, so when the sub-gear 14 rotates, the sub-gear 14 and the large gear 15 start to rotate. When the large gear 15 rotates, it drives the rack 11 and the scraper 10 to move, thereby cleaning the bottom of the oil tank 3. The extrusion plate 16 drives the gradual boss 18 when rotating. The gradual boss 18 will continuously squeeze the partition 7 when rotating. At the same time, the cleaning condensate inside the storage box 8 flows out from the inside of the water outlet 9, thereby cleaning the inside of the oil tank 3 together. A spring 17 is fixedly provided inside the storage box 8. The spring 17 is responsible for popping out the partition 7 after squeezing out the cleaning condensate, and finally pulling out the plug 5. All the debris after cleaning will flow out along the position of the plug 5, thereby completing the cleaning work.

[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil-immersed power transformer, comprising a power transformer body (1), characterized in that: A hydraulic screw lifter (2) is fixedly provided on the top surface of the power transformer body (1), a cover plate (6) is fixedly provided on the main shaft end of the hydraulic screw lifter (2), a storage box (8) is provided on the bottom surface of the cover plate (6), a motor (12) is fixedly provided inside the storage box (8), a main gear| (13) is fixedly provided on the main shaft end of the motor (12), a sub-gear (14) is connected to the outer meshing teeth of the main gear| (13), a connecting shaft (19) is rotatably provided inside the sub-gear (14), a large gear (15) is fixedly provided on one end of the connecting shaft (19), and the large gear (15) is rotatably connected to the cover plate (6), and an extrusion disk (16) is fixedly provided on the other end of the connecting shaft (19).

2. An oil-immersed power transformer according to claim 1, characterized in that: A scraper (10) is slidably provided on the bottom surface of the storage box (8), a rack (11) is fixedly provided on the outer side of the scraper (10), and the rack (11) is meshingly connected with the large gear (15).

3. An oil-immersed power transformer according to claim 1, characterized in that: An oil tank (3) is provided inside the power transformer body (1), a water tank (4) is fixedly provided outside the oil tank (3), and cooling water is provided inside the water tank (4).

4. An oil-immersed power transformer according to claim 1, characterized in that: The bottom surface of the power transformer body (1) is threadedly connected to a plug (5), and the plug (5) passes through the oil tank (3).

5. An oil-immersed power transformer according to claim 1, characterized in that: Cleaning condensate is provided inside the storage box (8), a water outlet hole (9) is provided on the outside of the storage box (8), and a cleaner is fixedly provided on the outside of the storage box (8).

6. An oil-immersed power transformer according to claim 1, characterized in that: A spring (17) is fixedly provided inside the storage box (8), and the other end of the spring (17) is in contact with the partition (7), and the partition (7) is engaged with the storage box (8).

7. An oil-immersed power transformer according to claim 1, characterized in that: A gradient boss (18) is fixedly provided on the top of the extrusion disc (16), and the gradient boss (18) is in contact with the partition (7).

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