Oil-immersed transformer capable of cooling protection device

Abstract

The utility model discloses an oil-immersed transformer capable of cooling a protection device, and relates to the technical field of transformers. An oil-immersed transformer capable of cooling a protection device comprises an oil-immersed transformer body, two supporting frames and a cooling liquid filtering structure are fixedly connected to the bottom of the oil-immersed transformer body, the cooling liquid filtering structure is located on the oil-immersed transformer body, and the cooling liquid filtering structure comprises a filtering box, two sealing doors and two filtering plates. The filtering box is fixedly connected to the bottom of the oil-immersed transformer body, the two sealing doors are fixedly installed on the two sides of the filtering box through bolts correspondingly, the two filtering plates are slidably connected into the filtering box, double interception is conducted through the two filtering plates, and stable installation of positioning sliding blocks and positioning sliding grooves is matched; impurities such as metal chippings and fibers can be efficiently captured, so that the impurities are prevented from entering an oil way pipeline, deposition and blockage of the impurities are avoided, smooth circulation of cooling oil is ensured, and stable heat dissipation performance is maintained.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and in particular to an oil-immersed transformer with a cooling protection device. Background Technology

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. It mainly consists of coils, magnetic cores, and a casing. Due to its advantages such as low production cost, good stability, easy heat dissipation, and safety and reliability, most transformers are oil-immersed transformers. Chinese utility model patent, authorized announcement number "CN213519510U", discloses an oil-immersed transformer based on a cooling protection device. In this oil-immersed transformer based on a cooling protection device, a circulating pump draws cooling oil from the casing into an oil suction pipe, and then from the oil suction pipe into a flat heat dissipation pipe. The flat heat dissipation pipe dissipates heat from the cooling oil through its large heat dissipation area. The cooled oil is then circulated back into the casing through the circulating pipe, thereby achieving circulating heat dissipation of the cooling oil and greatly improving the heat dissipation performance of the transformer and the cooling oil.

[0003] While the above-mentioned technical solution can circulate the cooling oil during use, the transformer casing may cause some impurities to be mixed in with the cooling oil after a long period of use. As the cooling oil circulates, these impurities cannot be effectively filtered and removed, but will gradually deposit and accumulate in the oil pipeline. This impurity deposition will hinder the normal flow of cooling oil and reduce heat dissipation efficiency. Therefore, we propose an oil-immersed transformer with a cooling protection device. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide an oil-immersed transformer with a cooling protection device. This can solve the problem that although the cooling oil can circulate, after a long period of use, some impurities may be mixed into the cooling oil. As the cooling oil circulates, these impurities cannot be effectively filtered and removed, but will gradually deposit and accumulate in the oil pipeline. This deposit of impurities will hinder the normal flow of cooling oil and reduce heat dissipation efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an oil-immersed transformer with a cooling protection device, comprising:

[0006] The bottom of the oil-immersed transformer body is fixedly connected to two support frames.

[0007] Coolant filtration structure, the coolant filtration structure is located on the body of the oil-immersed transformer;

[0008] The coolant filtration structure includes a filter box, two sealed doors, and two filter plates. The filter box is fixedly connected to the bottom of the oil-immersed transformer body. The two sealed doors are respectively fixedly installed on both sides of the filter box by bolts. Both filter plates are slidably connected inside the filter box. The filter box has layered grooves and two positioning slide grooves on both sides. Positioning sliders are fixedly connected to both sides of the two filter plates. The four positioning sliders are slidably connected inside the corresponding positioning slide grooves. Handles are fixedly connected to the back sides of the two filter plates.

[0009] Preferably, the coolant filtration structure further includes two electric telescopic rods and two cleaning scrapers. The two electric telescopic rods are fixedly installed at the bottom of the filter box. The telescopic ends of the two electric telescopic rods slide into the interior of the filter box and are fixedly connected to the corresponding cleaning scrapers. The two cleaning scrapers are adapted to the interior of the corresponding layered grooves.

[0010] Preferably, all four positioning sliders are made of rubber, and each of the four positioning sliders is interference-fitted with the interior of the corresponding positioning groove.

[0011] Preferably, the bottom of the filter box is fixedly connected to an oil drain pipe and an oil inlet pipe, both of which are connected to the interior of the filter box.

[0012] Preferably, a transformer oil conservator is fixedly installed on the top of the oil-immersed transformer body, and a circulation pipe is fixedly connected to the end of the oil drain pipe away from the filter box. The end of the circulation pipe away from the oil drain pipe is connected to the interior of the transformer oil conservator.

[0013] Preferably, an oil pump is fixedly installed on one side of the oil-immersed transformer body. The pumping end of the oil pump is connected to the interior of the oil-immersed transformer body. A heat dissipation pipe is fixedly connected to the draining end of the oil pump. The end of the heat dissipation pipe away from the oil pump is fixedly connected to the oil inlet pipe. Multiple heat dissipation fins are installed on the outer surface of the heat dissipation pipe.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This oil-immersed transformer with cooling protection device uses two filter plates for double interception. With the stable installation of positioning slider and positioning groove, it can efficiently capture impurities such as metal debris and fibers, thereby preventing impurities from entering the oil pipeline, avoiding impurity deposition and blockage, ensuring smooth circulation of cooling oil, and maintaining stable heat dissipation performance. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2This is a schematic diagram of the transformer oil conservator structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the heat dissipation pipe structure of this utility model;

[0020] Figure 4 This is a schematic cross-sectional view of the filter box of this utility model.

[0021] Reference numerals in the attached drawings: 1. Oil-immersed transformer body; 2. Support frame; 3. Transformer oil conservator; 4. Oil pump; 5. Heat dissipation fins; 6. Heat dissipation pipe; 7. Circulation pipe; 8. Filter box; 9. Oil drain pipe; 10. Oil inlet pipe; 11. Filter plate; 12. Positioning slider; 13. Sealing door; 14. Electric telescopic rod; 15. Handle; 16. Cleaning scraper; 17. Layering groove; 18. Positioning slide. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0025] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0026] Please see Figure 1-4 This utility model provides a technical solution: an oil-immersed transformer with a cooling protection device, comprising:

[0027] The oil-immersed transformer body 1 has two support frames 2 fixedly connected to its bottom.

[0028] Coolant filtration structure, the coolant filtration structure is located on the body 1 of the oil-immersed transformer;

[0029] The coolant filtration structure includes a filter box 8, two sealing doors 13, and two filter plates 11. The filter box 8 is fixedly connected to the bottom of the oil-immersed transformer body 1. The two sealing doors 13 are respectively fixedly installed on both sides of the filter box 8 by bolts. The two filter plates 11 are slidably connected inside the filter box 8. The filter box 8 has layered grooves 17 and two positioning slide grooves 18 on both sides. The two filter plates 11 are fixedly connected to both sides of the filter box 8. The four positioning slide grooves 12 are slidably connected inside the corresponding positioning slide grooves 18. The two filter plates 11 are fixedly connected to the opposite sides of the filter box 11. Handles 15 are fixedly connected to the opposite sides of the filter plates 11.

[0030] The coolant filtration structure also includes two electric telescopic rods 14 and two cleaning scrapers 16. The two electric telescopic rods 14 are fixedly installed at the bottom of the filter box 8. The telescopic ends of the two electric telescopic rods 14 slide into the interior of the filter box 8 and are fixedly connected to the corresponding cleaning scrapers 16. The two cleaning scrapers 16 are adapted to the interior of the corresponding layered grooves 17. The four positioning sliders 12 are all made of rubber and are interference-fitted with the interior of the corresponding positioning grooves 18.

[0031] The bottom of the filter box 8 is fixedly connected to an oil drain pipe 9 and an oil inlet pipe 10, both of which are connected to the interior of the filter box 8. The top of the oil-immersed transformer body 1 is fixedly installed with a transformer oil conservator 3. The end of the oil drain pipe 9 away from the filter box 8 is fixedly connected to a circulation pipe 7, and the end of the circulation pipe 7 away from the oil drain pipe 9 is connected to the interior of the transformer oil conservator 3.

[0032] An oil pump 4 is fixedly installed on one side of the oil-immersed transformer body 1. The pumping end of the oil pump 4 is connected to the interior of the oil-immersed transformer body 1. A heat dissipation pipe 6 is fixedly connected to the discharge end of the oil pump 4. The end of the heat dissipation pipe 6 away from the oil pump 4 is fixedly connected to the oil inlet pipe 10. Multiple heat dissipation fins 5 are installed on the outer surface of the heat dissipation pipe 6.

[0033] Furthermore, when using this device, as the oil-immersed transformer body 1 is running, the oil pump 4 starts to extract the oil inside the transformer. The oil enters the heat dissipation pipe 6 through the drain end of the oil pump 4. The multiple heat dissipation fins 5 on the outer surface of the heat dissipation pipe 6 increase the heat dissipation area, accelerate the dissipation of oil heat, and initially reduce the oil temperature. Subsequently, the oil flows into the filter box 8 through the oil inlet pipe 10. In the filter box 8, the oil first passes through two filter plates 11 for impurity filtration. Since the four positioning sliders 12 are made of rubber and are interference-fitted with the positioning slide grooves 18, the filter plates 11 are securely installed, effectively intercepting impurities in the oil. The filtered oil continues to flow downwards, returning to the transformer oil conservator 3 through the oil drain pipe 9 and the circulation pipe 7, and then flowing into the oil-immersed transformer body 1 to complete the circulation of the coolant.

[0034] When it is necessary to clean the impurities on the filter plate 11, activate the two electric telescopic rods 14. Their telescopic ends drive the cleaning scraper 16, so that the cleaning scraper 16 can remove the impurities on the surface of the filter plate 11. When it is necessary to replace the filter plate 11, open the sealing doors 13 on both sides of the filter box 8. The filter plate 11 can be pulled out along the positioning slide groove 18 through the handle 15 so that the next filtration operation can proceed smoothly.

[0035] With two filter plates 11 for double interception, and the stable installation of the positioning slider 12 and the positioning groove 18, it can efficiently capture impurities such as metal scraps and fibers, thereby preventing impurities from entering the oil pipeline, avoiding impurity deposition and blockage, ensuring smooth circulation of cooling oil, and maintaining stable heat dissipation performance.

[0036] Structural Description: Oil-immersed transformer body 1: As the core equipment, it is used for the conversion and transmission of electrical energy and is the main body of the entire device;

[0037] Support frame 2: It is fixedly connected to the bottom of the oil-immersed transformer body 1 to support the transformer body and keep it stable;

[0038] Transformer oil conservator 3: Installed on top of the oil-immersed transformer body 1, used to adjust the oil level and compensate for the volume change of transformer oil due to thermal expansion and contraction;

[0039] Oil pump 4: Fixedly installed on one side of the oil-immersed transformer body 1, used to draw oil from inside the transformer and promote the circulation of oil.

[0040] Heat dissipation fins 5: Installed on the outer surface of heat dissipation pipes 6 to increase the heat dissipation area, accelerate the dissipation of oil heat, and reduce oil temperature;

[0041] Cooling pipe 6: Connects the oil pump 4 and the oil inlet pipe 10, serving as a channel for oil cooling, and is assisted in cooling by cooling fins 5;

[0042] Circulation pipe 7: Connects the oil drain pipe 9 to the transformer oil conservator 3, so that the filtered oil flows back to the transformer oil conservator 3 to complete the circulation;

[0043] Filter box 8: Fixedly connected to the bottom of the oil-immersed transformer body 1, used to house the filter plate 11 and filter impurities from the oil.

[0044] Oil drain pipe 9: Fixedly connected to the bottom of filter box 8, it drains the filtered oil from filter box 8;

[0045] Oil inlet pipe 10: It is fixedly connected to the bottom of the filter box 8 and introduces the cooled oil into the filter box 8;

[0046] Filter plate 11: Slidingly connected inside the filter box 8, used to intercept impurities in the oil and achieve solid-liquid separation;

[0047] Positioning slider 12: It is fixedly connected to both sides of the filter plate 11 and cooperates with the positioning slide groove 18 to ensure that the filter plate 11 is securely installed and easy to disassemble.

[0048] Sealing door 13: Installed on both sides of filter box 8 by bolts, used to seal filter box 8, facilitating maintenance and replacement of filter plate 11;

[0049] Electric telescopic rod 14: Fixedly installed at the bottom of filter box 8, the telescopic end drives the cleaning scraper 16 to clean impurities on the surface of filter plate 11;

[0050] Handle 15: Fixedly connected to the back of filter plate 11, making it easy for operators to pull out filter plate 11;

[0051] Cleaning scraper 16: connected to the telescopic end of the electric telescopic rod 14, used to scrape off impurities from the surface of the filter plate 11 and the layering groove 17.

[0052] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An oil-immersed transformer with a cooling protection device, characterized in that, include: The oil-immersed transformer body (1) has two support frames (2) fixedly connected to its bottom. Coolant filtration structure, the coolant filtration structure is located on the body (1) of the oil-immersed transformer; The coolant filtration structure includes a filter box (8), two sealing doors (13) and two filter plates (11). The filter box (8) is fixedly connected to the bottom of the oil-immersed transformer body (1). The two sealing doors (13) are respectively fixedly installed on both sides of the filter box (8) by bolts. The two filter plates (11) are slidably connected inside the filter box (8). The filter box (8) has a layered groove (17) and two positioning grooves (18) on both sides. The two filter plates (11) are fixedly connected to the two sides with positioning sliders (12). The four positioning sliders (12) are slidably connected inside the corresponding positioning grooves (18). The two filter plates (11) are fixedly connected to the opposite sides with handles (15).

2. An oil-immersed transformer with a cooling protection device according to claim 1, characterized in that: The coolant filtration structure also includes two electric telescopic rods (14) and two cleaning scrapers (16), with the two electric telescopic rods (14) fixedly installed at the bottom of the filter box (8); The telescopic ends of the two electric telescopic rods (14) slide into the interior of the filter box (8) and are fixedly connected to the corresponding cleaning scrapers (16). The two cleaning scrapers (16) are adapted to the interior of the corresponding layered grooves (17).

3. An oil-immersed transformer with a cooling protection device according to claim 1, characterized in that: All four positioning sliders (12) are made of rubber, and all four positioning sliders (12) are interference-fitted with the interior of the corresponding positioning groove (18).

4. An oil-immersed transformer with a cooling protection device according to claim 1, characterized in that: The bottom of the filter box (8) is fixedly connected to an oil drain pipe (9) and an oil inlet pipe (10), and both the oil drain pipe (9) and the oil inlet pipe (10) are connected to the interior of the filter box (8).

5. An oil-immersed transformer with a cooling protection device according to claim 4, characterized in that: The top of the oil-immersed transformer body (1) is fixedly installed with a transformer oil conservator (3), and the end of the oil drain pipe (9) away from the filter box (8) is fixedly connected to a circulation pipe (7). The end of the circulation pipe (7) away from the oil drain pipe (9) is connected to the interior of the transformer oil conservator (3).

6. An oil-immersed transformer with a cooling protection device according to claim 4, characterized in that: An oil pump (4) is fixedly installed on one side of the oil-immersed transformer body (1). The pumping end of the oil pump (4) is connected to the interior of the oil-immersed transformer body (1). A heat dissipation pipe (6) is fixedly connected to the draining end of the oil pump (4). The end of the heat dissipation pipe (6) away from the oil pump (4) is fixedly connected to the oil inlet pipe (10). Multiple heat dissipation fins (5) are installed on the outer surface of the heat dissipation pipe (6).

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