Oil-immersed transformer

Abstract

The utility model relates to the technical field of transformer protection, and discloses an oil-immersed transformer which comprises a protection box body, a placement groove is fixedly formed in the inner end of the protection box body, and a heat dissipation assembly is arranged at the inner end of the placement groove; the heat dissipation assembly comprises a heat conduction copper plate, the heat conduction copper plate is fixedly installed at the lower end of the containing groove, a limiting groove is fixedly formed in the upper end of the heat conduction copper plate, a transformer body is fixedly installed above the limiting groove, a positioning block is fixedly installed at the lower end of the transformer body, and the positioning block is matched with the limiting groove. A heat dissipation groove is fixedly formed in the lower end of the heat conduction copper plate, a copper fin is fixedly installed at the position, located at the lower end of the heat conduction copper plate, of the inner end of the heat dissipation groove, a heat dissipation fan is fixedly installed at the lower end of the copper fin, and a heat dissipation opening is fixedly formed in the position, located at the lower end of the heat dissipation groove, below the heat dissipation fan. According to the oil-immersed transformer, wind power heat dissipation is conducted through the heat dissipation fan, and the safety of the transformer body can be effectively improved.

Description

Technical Field

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

[0002] The oil-immersed transformer is a new type of high-performance transformer with a more reasonable structure and better performance. Its three-dimensional wound core has three core columns arranged in an equilateral triangle. There is no air gap in the magnetic circuit, the winding is tighter, the three magnetic circuits are of the same length and are the shortest, and the cross-sectional area of ​​the core column is closer to a circle.

[0003] The performance of oil-immersed transformers is further improved, losses are reduced, noise is reduced, three-phase balance is achieved, and the third harmonic component is reduced. This product is more suitable for power grid transformation in urban and rural areas, industrial and mining enterprises, and is more suitable for combined transformers and prefabricated transformers for substations.

[0004] However, oil-immersed transformers generally work for a long time once they are used. In summer or when the weather is hot and the temperature is high, continuous sunlight exposure will increase the oil temperature inside the oil-immersed transformer, and the efficiency of cooling by the oil inside the oil-immersed transformer will be greatly reduced, increasing the risk of use. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The purpose of the utility model is to provide an oil-immersed transformer to solve the problem proposed in the above background technology that in summer or when the weather is hot and the temperature is high, continuous sunlight exposure will increase the temperature of the oil inside the oil-immersed transformer, and the efficiency of cooling by the oil inside the oil-immersed transformer will be greatly reduced, thereby increasing the risk of use.

[0007] (II) Technical solution

[0008] To achieve the above object, the utility model provides the following technical solution: an oil-immersed transformer, comprising a protection box, the inner end of which is fixedly provided with a placement groove, and the inner end of which is provided with a heat dissipation component;

[0009] The heat dissipation component includes a heat-conducting copper plate, which is fixedly installed at the lower end of the placement groove, and a limiting groove is fixedly provided on the upper end of the heat-conducting copper plate, a transformer body is fixedly installed above the limiting groove, a positioning block is fixedly installed at the lower end of the transformer body, and the positioning block is adapted to the limiting groove, a heat dissipation groove is fixedly provided at the lower end of the heat-conducting copper plate, and a copper fin is fixedly installed at the inner end of the heat dissipation groove at the lower end of the heat-conducting copper plate, and a heat dissipation fan is fixedly installed at the lower end of the copper fin, and a heat dissipation port is fixedly provided at the lower end of the heat dissipation groove below the heat dissipation fan. The installation of the heat dissipation component can conduct the heat generated by the transformer body to the surface of the copper fin through the heat-conducting copper plate, and then the heat dissipation is performed by wind power through the heat dissipation fan, which can effectively improve the safety of the transformer body and extend the service life of the transformer body.

[0010] Preferably, a bar grille is fixedly installed on the inner end of the heat dissipation port, ventilation holes are fixedly provided on the left and right ends of the heat dissipation port, and the ventilation holes are symmetrically distributed on the left and right sides, and oil holes are fixedly provided on the inner end of the thermal conductive copper plate, and the oil holes are symmetrically distributed on the left and right sides, and a temperature detector is fixedly installed on the upper end of the placement groove above the transformer body, and the installation of the ventilation holes can increase the air circulation inside the heat dissipation groove, which can effectively improve the heat dissipation efficiency.

[0011] Preferably, the inner end of the placement groove is located on the left side of the transformer body and is fixedly installed with an oil detector, the upper end of the protection box is provided with a refueling assembly, the refueling assembly includes a refueling pipe, the refueling pipe is fixedly connected to the upper end of the protection box, the inner end of the refueling pipe is fixedly installed with a filter screen, the inner end of the refueling pipe is located above the filter screen and is fixedly provided with a sealing thread 1. With the installation of the refueling assembly, the staff can add cooling oil to the interior of the placement groove through the refueling pipe and can filter the cooling oil, which effectively improves the practicability and facilitates the use of the staff.

[0012] Preferably, a tube cover is rotatably installed on the upper end of the refueling pipe, a sealing column is fixedly installed on the lower end of the tube cover, and a sealing thread 2 is fixedly provided on the outer end of the sealing column. The sealing thread 2 is adapted to the sealing thread 1. The setting of the sealing thread 2 and the sealing thread 1 can effectively improve the sealing performance and facilitate the use of the staff.

[0013] Preferably, a control component is provided at the right end of the protective box body, and the control component includes an auxiliary slot, which is fixedly provided at the right end of the protective box body, a display screen is fixedly installed at the inner end of the auxiliary slot, and a control panel is fixedly installed at the inner end of the auxiliary slot below the display screen. The installation of the control component can simplify the operation process, reduce the difficulty of operation, effectively improve the practicality, and facilitate the operation of the staff.

[0014] Preferably, a switch button is movably installed on the right end of the control panel, a control button is fixedly installed behind the switch button, a working indicator light is fixedly provided above the control button, and a card slot is fixedly provided at the inner end of the auxiliary slot. The setting of the working indicator light can facilitate the staff to observe the amount of cooling oil inside the placement slot, thereby effectively improving the practicality.

[0015] Preferably, a protection component is provided on the outside of the control component, and the protection component includes a hinge, and the hinge is fixedly installed at the rear of the auxiliary slot, and the hinge is distributed in parallel up and down. A slot door is fixedly installed on the outer end of the hinge, and the slot door is adapted to the auxiliary slot. The installation of the protection component can play a role in waterproofing and dust release, effectively improves the practicability, and facilitates the use of the staff.

[0016] Preferably, an observation groove is fixedly provided at the inner end of the slot door, a transparent glass sheet is fixedly installed at the inner end of the observation groove, an auxiliary hole is fixedly provided at the inner end of the slot door, which is located on the left side of the observation groove, a spring is fixedly installed at the inner end of the auxiliary hole, a slider is fixedly installed at the left end of the spring, the slider is matched with the card slot, and the installation of the slider and the card slot can make the slot door close more firmly, effectively improve the safety of use, and facilitate the use of the staff.

[0017] Preferably, a support column is fixedly installed at the lower end of the protection box body, and a mounting assembly is provided at the lower end of the support column. The mounting assembly includes a mounting platform, and the mounting platform is fixedly installed at the lower end of the support column. A threaded hole is fixedly provided at the inner end of the mounting platform, and a bolt is rotatably installed at the inner end of the threaded hole. The installation of the mounting assembly can be done by the staff by using the bolt to penetrate the threaded hole and then connect it to the placement surface, which can effectively improve the installation efficiency of the staff and facilitate the use of the staff.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The oil-immersed transformer can conduct the heat generated by the transformer body to the surface of the copper fins through the installation of the heat dissipation component through the heat-conducting copper plate, and then dissipate the heat through the cooling fan, which can effectively improve the safety of the transformer body and extend the service life of the transformer body;

[0020] 2. The oil-immersed transformer, through the installation of the refueling assembly, the staff can add cooling oil to the inside of the placement tank through the refueling pipe, and can filter the cooling oil, which effectively improves the practicality and facilitates the use of the staff;

[0021] 3. The oil-immersed transformer can simplify the control process, reduce the difficulty of operation, effectively improve the practicality, and facilitate the operation of the staff through the installation of control components. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0023] Figure 2 It is a partial three-dimensional structural schematic diagram of the utility model;

[0024] Figure 3 It is a partial three-dimensional structural schematic diagram of the utility model;

[0025] Figure 4 It is a schematic diagram of a partial cross-section structure of the utility model;

[0026] Figure 5 This is a schematic diagram of the second structure of a partial cross section of the utility model;

[0027] Figure 6 It is a schematic diagram of the third structure of the local section of the utility model.

[0028] In the figure: 1, protective box; 2, placement slot; 3, heat dissipation component; 4, oil detector; 5, refueling component; 6, control component; 7, protection component; 8, support column; 9, installation component; 301, thermal copper plate; 302, limit slot; 303, transformer body; 304, positioning block; 305, heat dissipation slot; 306, copper fin; 307, cooling fan; 308, heat dissipation port; 309, bar grille; 310, ventilation hole; 311, oil hole; 312, temperature detector; 501, refueling pipe; 50 2. Filter; 503. Sealing thread 1; 504. Pipe cover; 505. Sealing column; 506. Sealing thread 2; 601. Auxiliary slot; 602. Display screen; 603. Control panel; 604. Switch button; 605. Control button; 606. Working indicator light; 607. Card slot; 701. Hinge; 702. Slot door; 703. Observation slot; 704. Transparent glass sheet; 705. Auxiliary hole; 706. Spring; 707. Slider; 901. Mounting table; 902. Threaded hole; 903. Bolt. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1 - Figure 6 The utility model provides a technical solution: an oil-immersed transformer, comprising a protection box 1, a placement groove 2 is fixedly arranged at the inner end of the protection box 1, and a heat dissipation component 3 is arranged at the inner end of the placement groove 2;

[0031] The heat dissipation component 3 includes a heat-conducting copper plate 301, which is fixedly installed at the lower end of the placement groove 2. A limiting groove 302 is fixedly provided at the upper end of the heat-conducting copper plate 301, and a transformer body 303 is fixedly installed above the limiting groove 302. A positioning block 304 is fixedly installed at the lower end of the transformer body 303, and the positioning block 304 is adapted to the limiting groove 302. A heat dissipation groove 305 is fixedly provided at the lower end of the heat-conducting copper plate 301, and a copper fin 306 is fixedly installed at the inner end of the heat dissipation groove 305 located at the lower end of the heat-conducting copper plate 301, and a heat dissipation fan 307 is fixedly installed at the lower end of the copper fin 306. A heat dissipation port 308 is fixedly provided at the lower end of the heat dissipation groove 305 below the heat dissipation fan 307, and a bar grille 309 is fixedly installed at the inner end of the heat dissipation port 308. Ventilation holes 310 are fixedly provided at the left and right ends of the heat dissipation port 308, and the ventilation holes 310 are symmetrically distributed on the left and right. Oil holes 311 are fixedly provided at the inner end of the heat-conducting copper plate 301, and the oil holes 311 are symmetrically distributed on the left and right. A temperature detector 312 is fixedly installed at the upper end of the placement slot 2 above the transformer body 303. When the transformer body 303 works for a long time, it will generate heat. At the same time, the heat-conducting copper plate 301 will transfer the input to the copper fins 306, and then the copper fins 306 will be cooled by the circulation of air. When the temperature detector 312 detects that the heat of the transformer body 303 is high, the cooling fan 307 will be automatically started, and the cooling fan 307 will accelerate the circulation of air to blow heat out of the heat dissipation port 308.

[0032] Furthermore, an oil detector 4 is fixedly installed on the inner end of the placement groove 2, which is located on the left side of the transformer body 303; a refueling assembly 5 is provided on the upper end of the protection box 1; the refueling assembly 5 includes a refueling pipe 501, which is fixedly connected to the upper end of the protection box 1; a filter screen 502 is fixedly installed on the inner end of the refueling pipe 501; a sealing thread 1 503 is fixedly provided on the inner end of the refueling pipe 501, which is located above the filter screen 502; a pipe cover 504 is rotatably installed on the upper end of the refueling pipe 501; a sealing column 505 is fixedly installed on the lower end of the pipe cover 504; a sealing thread 2 506 is fixedly provided on the outer end of the sealing column 505; the sealing thread 2 506 is matched with the sealing thread 1 503; the staff rotates the pipe cover 504 to rotate the sealing thread 2 506 at the outer end of the sealing column 505 and the short sealing thread 1 503 in the refueling pipe 501, thereby opening the pipe cover 504; and then the staff refuels the inside of the placement groove 2 through the refueling pipe 501.

[0033] Furthermore, a control component 6 is provided at the right end of the protective box 1, and the control component 6 includes an auxiliary slot 601, which is fixedly provided at the right end of the protective box 1, a display screen 602 is fixedly installed at the inner end of the auxiliary slot 601, a control panel 603 is fixedly installed below the display screen 602 and located at the inner end of the auxiliary slot 601, a switch button 604 is movably installed at the right end of the control panel 603, a control button 605 is fixedly installed behind the switch button 604, a working indicator light 606 is fixedly provided above the control button 605, and a card slot 607 is fixedly provided at the inner end of the auxiliary slot 601. The staff first starts the display screen 602 and the control panel 603 by pressing the switch button 604, and then the staff can adjust the alarm value of the temperature detector 312 by using the control button 605.

[0034] Furthermore, a protection component 7 is provided on the outer side of the control component 6, and the protection component 7 includes a hinge 701, which is fixedly installed at the rear of the auxiliary slot 601, and the hinge 701 is distributed in parallel up and down. A slot door 702 is fixedly installed on the outer end of the hinge 701, and the slot door 702 is adapted to the auxiliary slot 601. An observation slot 703 is fixedly installed on the inner end of the slot door 702, and a transparent glass sheet 704 is fixedly installed on the inner end of the observation slot 703. An auxiliary hole 705 is fixedly provided on the inner end of the slot door 702, which is located on the left side of the observation slot 703. A spring 706 is fixedly installed on the inner end of the auxiliary hole 705, and a slider 707 is fixedly installed on the left end of the spring 706. The slider 707 is adapted to the slot 607. During use, the staff pulls the slider 707 to force the spring 706 to contract, so that the slider 707 leaves the inside of the slot 607, thereby completing the opening of the slot door 702.

[0035] Furthermore, a support column 8 is fixedly installed at the lower end of the protective box 1, and a mounting assembly 9 is provided at the lower end of the support column 8. The mounting assembly 9 includes a mounting platform 901, and the mounting platform 901 is fixedly installed at the lower end of the support column 8. A threaded hole 902 is fixedly provided at the inner end of the mounting platform 901, and a bolt 903 is rotatably installed at the inner end of the threaded hole 902.

[0036] Working principle: The staff first starts the display screen 602 and the control panel 603 by pressing the switch button 604, and then the staff can adjust the alarm value of the temperature detector 312 by operating the button 605. When the transformer body 303 works for a long time, it will generate heat, and at the same time, the heat-conducting copper plate 301 will transfer the input to the copper fin 306, and then the copper fin 306 will be cooled by the circulation of air. When the temperature detector 312 detects that the transformer body 303 is overheated, it will automatically start the cooling fan 307, and the cooling fan 307 will accelerate the circulation of air to blow the heat out from the heat dissipation port 308.

[0037] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. An oil-immersed transformer, comprising a protective box (1), characterized in that: The inner end of the protection box (1) is fixedly provided with a placement groove (2), and the inner end of the placement groove (2) is provided with a heat dissipation component (3); The heat dissipation component (3) comprises a heat-conducting copper plate (301), the heat-conducting copper plate (301) is fixedly mounted at the lower end of the placement groove (2), a limiting groove (302) is fixedly arranged at the upper end of the heat-conducting copper plate (301), a transformer body (303) is fixedly mounted above the limiting groove (302), a positioning block (304) is fixedly mounted at the lower end of the transformer body (303), the positioning block (304) is matched with the limiting groove (302), a heat dissipation groove (305) is fixedly arranged at the lower end of the heat-conducting copper plate (301), a copper fin (306) is fixedly mounted at the inner end of the heat dissipation groove (305) located at the lower end of the heat-conducting copper plate (301), a heat dissipation fan (307) is fixedly mounted at the lower end of the copper fin (306), and a heat dissipation port (308) is fixedly mounted below the heat dissipation fan (307) and located at the lower end of the heat dissipation groove (305).

2. The oil-immersed transformer according to claim 1, characterized in that: A bar grid (309) is fixedly mounted on the inner end of the heat dissipation opening (308); ventilation holes (310) are fixedly arranged at the left and right ends of the heat dissipation opening (308); the ventilation holes (310) are symmetrically distributed on the left and right sides; oil holes (311) are fixedly arranged on the inner end of the heat-conducting copper plate (301); the oil holes (311) are symmetrically distributed on the left and right sides; and a temperature detector (312) is fixedly mounted on the upper end of the placement groove (2) above the transformer body (303).

3. The oil-immersed transformer according to claim 2, characterized in that: The inner end of the placement groove (2) is located on the left side of the transformer body (303) and is fixedly installed with an oil detector (4). The upper end of the protection box (1) is provided with a refueling assembly (5). The refueling assembly (5) includes a refueling pipe (501). The refueling pipe (501) is fixedly connected to the upper end of the protection box (1). A filter screen (502) is fixedly installed at the inner end of the refueling pipe (501). The inner end of the refueling pipe (501) is located above the filter screen (502) and is fixedly provided with a sealing thread (503).

4. The oil-immersed transformer according to claim 3, characterized in that: A pipe cover (504) is rotatably mounted on the upper end of the refueling pipe (501), a sealing column (505) is fixedly mounted on the lower end of the pipe cover (504), a sealing thread 2 (506) is fixedly disposed on the outer end of the sealing column (505), and the sealing thread 2 (506) is matched with the sealing thread 1 (503).

5. The oil-immersed transformer according to claim 4, characterized in that: A control component (6) is arranged at the right end of the protective box (1), and the control component (6) comprises an auxiliary slot (601), the auxiliary slot (601) is fixedly arranged at the right end of the protective box (1), a display screen (602) is fixedly installed at the inner end of the auxiliary slot (601), and a control panel (603) is fixedly installed at the inner end of the auxiliary slot (601) below the display screen (602).

6. The oil-immersed transformer according to claim 5, characterized in that: A switch button (604) is movably mounted on the right end of the control panel (603), a control button (605) is fixedly mounted behind the switch button (604), a working indicator light (606) is fixedly mounted above the control button (605), and a card slot (607) is fixedly mounted on the inner end of the auxiliary slot (601).

7. The oil-immersed transformer according to claim 6, characterized in that: A protection component (7) is arranged on the outer side of the control component (6), and the protection component (7) comprises a hinge (701). The hinge (701) is fixedly mounted behind the auxiliary slot (601), and the hinge (701) is distributed in parallel up and down. A slot door (702) is fixedly mounted on the outer end of the hinge (701), and the slot door (702) is adapted to the auxiliary slot (601).

8. The oil-immersed transformer according to claim 7, characterized in that: An observation slot (703) is fixedly provided at the inner end of the slot door (702), a transparent glass sheet (704) is fixedly installed at the inner end of the observation slot (703), an auxiliary hole (705) is fixedly provided at the inner end of the slot door (702) on the left side of the observation slot (703), a spring (706) is fixedly installed at the inner end of the auxiliary hole (705), a slider (707) is fixedly installed at the left end of the spring (706), and the slider (707) is adapted to the card slot (607).

9. The oil-immersed transformer according to claim 8, characterized in that: A support column (8) is fixedly mounted on the lower end of the protection box (1), and a mounting assembly (9) is arranged at the lower end of the support column (8). The mounting assembly (9) comprises a mounting platform (901). The mounting platform (901) is fixedly mounted on the protective box (1). The mounting platform (901) is fixedly mounted at the lower end of the support column (8), and a threaded hole (902) is fixedly provided at the inner end of the mounting platform (901). A bolt (903) is rotatably mounted on the inner end of the threaded hole (902).

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