Oil-immersed distribution transformer convenient for oil injection

Abstract

The utility model relates to the technical field of transformers, and discloses an oil-immersed distribution transformer convenient for oil injection, which comprises a transformer body, two supports, an oil storage barrel and an oil filling pipe, the outer wall of the oil storage barrel is connected with an outer ring, the inner wall of the outer ring is connected with an inner ring, a plurality of limiting components are connected between the outer ring and the inner ring, and the inner wall of the inner ring is connected with a funnel. The outer wall of the lower end of the funnel abuts against the inner wall of the oil filling pipe, the outer wall of the outer ring is in threaded connection with a sealing cover, and the inner ring, the funnel, the oil filling pipe and the limiting assemblies are all located in the sealing cover. According to the oil-immersed distribution transformer convenient to inject oil, the outer ring, the inner ring and the funnel are arranged on the oil storage barrel of the transformer body, when a user adds insulating oil into the transformer body, the inner ring can be pulled upwards after a sealing cover is opened, and then the opening range of the funnel can be expanded through the inner ring; therefore, the subsequent pouring of the insulating oil is convenient and fast, and the condition of dripping and waste is not easy to occur.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to an oil-immersed distribution transformer which is convenient for oil injection. Background Art

[0002] Oil-immersed distribution transformer is a common power equipment used to convert electrical energy from one voltage level to another to meet the needs of different electrical equipment.

[0003] The patent with the current publication number CN219393160U discloses a heat dissipation type oil-immersed transformer, including an oil-immersed transformer and a mounting frame, wherein the oil-immersed transformer is fixedly mounted on the top of the mounting frame, an oil tank is fixedly arranged on the oil-immersed transformer, a radiator is fixedly arranged at the front end of the oil tank, a cooling box is fixedly arranged at the rear end of the oil-immersed transformer, a temperature sensor is fixedly arranged at the top end of the oil tank, a circulating oil pump is fixedly arranged on one side of the oil tank, the temperature sensor is connected to the circulating oil pump signal, the oil pumping end of the circulating oil pump is connected to the inside of the oil tank, and the oil delivery end of the circulating oil pump is connected to the inside of the cooling box. Through this structure, the device can effectively improve the heat dissipation efficiency of the oil-immersed transformer, ensure the output stability of the oil-immersed transformer, and improve the service life of the oil-immersed transformer.

[0004] However, the above-mentioned oil-immersed transformer still has the following problems:

[0005] In the actual use of the current oil-immersed transformer, the internal insulating oil is an important component, so it is necessary to frequently add insulating oil to the oil-immersed transformer. However, the oil filling hole of the current oil-immersed transformer is usually small. When the staff adds insulating oil to the oil filling hole, it is not convenient to align it, which can easily cause part of the insulating oil to drip or even pour on the outside of the oil-immersed transformer, not only causing a waste of insulating oil, but also some substances contained in the insulating oil flow onto the ground, polluting the environment, which is quite inconvenient. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides an oil-immersed distribution transformer that is easy to fill with oil. When a user adds insulating oil to the inside of the transformer body, the user can open the sealing cover and pull the inner ring upward, thereby expanding the opening range of the funnel through the inner ring, so that the subsequent pouring of insulating oil is not only convenient and quick, but also less likely to cause dripping and waste.

[0007] The utility model provides the following technical solution: an oil-immersed distribution transformer that is easy to fill with oil, comprising a transformer body, two brackets installed on the transformer body, an oil storage barrel installed at the other ends of the two brackets, and a refueling pipe installed at the upper end of the oil storage barrel, the outer wall of the oil storage barrel is connected with an outer ring, the inner wall of the outer ring is connected with an inner ring, a plurality of limit assemblies are connected between the outer ring and the inner ring, the inner wall of the inner ring is connected with a funnel, the outer wall of the lower end of the funnel is against the inner wall of the refueling pipe, the outer wall of the outer ring is threadedly connected with a sealing cover, and the inner ring, the funnel, the refueling pipe and the plurality of limit assemblies are all located inside the sealing cover.

[0008] Furthermore, the inner wall of the inner ring is provided with a plurality of push grooves, outlets and spring cavities, and the plurality of push grooves are respectively connected with the plurality of outlets and the plurality of spring cavities, the plurality of limit assemblies are respectively located in the plurality of connected push grooves, outlets and spring cavities, and one end of the plurality of limit assemblies passes through the plurality of outlets respectively.

[0009] Furthermore, a plurality of bayonet holes are provided on the inner wall of the outer ring, and the plurality of bayonet holes are respectively connected to one end of the plurality of limit assemblies passing through the outlet.

[0010] Furthermore, the limiting assembly includes a buckle plate, a top plate and a push spring, the bottom surface of the buckle plate is fixedly connected to the upper surface of the top plate, one side of the top plate is fixedly connected to one end of the push spring, the other end of the push spring is fixedly connected to the inner wall of the spring cavity, the end of the buckle plate away from the top plate passes through the upper surface of the push groove, the end of the buckle plate close to the top plate passes through the outlet and abuts against the inner wall of the bayonet.

[0011] Furthermore, sliding openings are provided on both sides of the gusset plate away from one end of the top plate, and the inner walls of the two sliding openings are slidably connected to the upper surface of the push groove.

[0012] Furthermore, a cover plate is fixedly connected to the outer wall of one end of the push groove through the buckle plate, the bottom surface of the cover plate is slidably connected to the upper surface of the inner ring, and the length and width of the cover plate are not less than the length and width of the push groove.

[0013] Furthermore, a connecting ring is sleeved and fixedly connected to the outer wall of the funnel, and the bottom surface of the connecting ring is fixedly connected to the upper surface of the refueling pipe.

[0014] Furthermore, a universal tube is fixedly connected to the bottom surface of the inner ring, the other end of the universal tube is fixedly connected to the outer wall of the oil storage barrel, and the funnel and the refueling pipe are both located inside the universal tube.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The oil-immersed distribution transformer which is easy to fill with oil has an outer ring, an inner ring and a funnel arranged on the oil storage barrel of the transformer body. When the user adds insulating oil to the inside of the transformer body, the user can pull the inner ring upward after opening the sealing cover, and then the opening range of the funnel can be expanded through the inner ring, so that the subsequent pouring of insulating oil is not only convenient and quick, but also less likely to cause dripping and waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall appearance of the sealing cover of the utility model when it is closed;

[0018] Figure 2 This is a schematic diagram of the overall appearance of the sealing cover of the utility model after it is opened;

[0019] Figure 3 It is an exploded schematic diagram of the oil storage barrel, outer ring, inner ring and other components of the utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the inner ring of the utility model;

[0021] Figure 5 It is a cross-sectional schematic diagram of the inner ring of the utility model;

[0022] Figure 6 It is a schematic diagram of the front and back sides of the limit assembly of the utility model.

[0023] In the figure: 1. transformer body; 2. bracket; 3. oil storage barrel; 4. sealing cover; 5. outer ring; 6. universal tube; 7. inner ring; 8. funnel; 9. refueling pipe; 10. connecting ring; 11. buckle plate; 12. cover plate; 13. top plate; 14. push spring; 501, bayonet; 701, push groove; 702, outlet; 703, spring cavity; 1101, slide mouth. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] See also Figure 1-Figure 6An oil-immersed distribution transformer that is easy to fill with oil includes a transformer body 1, two brackets 2 installed on the transformer body 1, an oil storage barrel 3 installed at the other ends of the two brackets 2, and a refueling pipe 9 installed at the upper end of the oil storage barrel 3. The outer wall of the oil storage barrel 3 is connected with an outer ring 5, the inner wall of the outer ring 5 is connected with an inner ring 7, a plurality of limit components are connected between the outer ring 5 and the inner ring 7, the inner wall of the inner ring 7 is connected with a funnel 8, the outer wall of the lower end of the funnel 8 is against the inner wall of the refueling pipe 9, the outer wall of the outer ring 5 is threadedly connected with a sealing cover 4, the inner ring 7, the funnel 8, the refueling pipe 9 and the plurality of limit components are all located inside the sealing cover 4.

[0026] The oil-immersed distribution transformer in the utility model is similar to the existing oil-immersed transformer structure, such as the heat dissipation oil-immersed transformer disclosed in the patent with publication number CN219393160U. Figures 1 to 6 As shown, when adding insulating oil to the transformer body 1 of the oil-immersed distribution transformer that is easy to fill with oil in the utility model, the staff first unscrews the sealing cover 4 manually or with the help of a tool, then removes the sealing cover 4, then manually cancels the limit assembly between the outer ring 5 and the inner ring 7, and then pulls the inner ring 7 upward. The inner ring 7 is pulled out from the outer ring 5 after being subjected to tension. Because the inner ring 7 is connected to the inside of the funnel 8, the funnel 8 will be unfolded while the inner ring 7 rises, and then the diameter of the inside of the refueling pipe 9 can be increased through the funnel 8. At this time, the staff can align the oil barrel with insulating oil on the outside with the funnel 8 and pour it into the funnel 8, which is not only convenient and fast, but also not prone to dripping and waste. After pouring a suitable amount, it is only necessary to press the inner ring 7 downward, retract the funnel 8, and then seal and limit it through the sealing cover 4, which is convenient and easy to operate. It should be particularly noted here that the foldable plastic or other foldable materials used for the funnel 8 are not specifically limited.

[0027] Please refer to Figure 5 The inner wall of the inner ring 7 is provided with a plurality of push grooves 701, outlets 702 and spring cavities 703, and the plurality of push grooves 701 are respectively connected with the plurality of outlets 702 and the plurality of spring cavities 703, and the plurality of limit assemblies are respectively located in the plurality of connected push grooves 701, outlets 702 and spring cavities 703, and one end of the plurality of limit assemblies passes through the plurality of outlets 702 respectively.

[0028] More specifically, by arranging the push groove 701, the outlet 702 and the spring cavity 703 inside the inner ring 7, not only can the limiting component be stored, but also the connection limiting effect between the limiting component and the outer ring 5 can be increased.

[0029] Please refer to Figure 3 The inner wall of the outer ring 5 is provided with a plurality of bayonet holes 501 , and the plurality of bayonet holes 501 are respectively connected to one end of a plurality of position limiting components passing through the outlet 702 .

[0030] More specifically, by providing the bayonet 501 on the outer ring 5, it can cooperate with the limiting component at the outlet 702, thereby increasing the connectivity between the outer ring 5 and the inner ring 7, making it difficult for the two to be separated.

[0031] Please refer to Figure 4 and Figure 6 The limiting assembly includes a buckle plate 11, a top plate 13 and a push spring 14. The bottom surface of the buckle plate 11 is fixedly connected to the upper surface of the top plate 13, one side of the top plate 13 is fixedly connected to one end of the push spring 14, and the other end of the push spring 14 is fixedly connected to the inner wall of the spring cavity 703. The end of the buckle plate 11 away from the top plate 13 passes through the upper surface of the push groove 701, and the end of the buckle plate 11 close to the top plate 13 passes through the outlet 702 and abuts against the inner wall of the bayonet 501.

[0032] When the outer ring 5 and the inner ring 7 need to be separated, the buckle plate 11 only needs to be pushed manually. After the buckle plate 11 is pushed, the top plate 13 below will move in the push groove 701 and the spring cavity 703. When the top plate 13 moves, it will compress the push spring 14, thereby separating the buckle plate 11 from the bayonet 501, and then the inner ring 7 can be pulled out from the top of the outer ring 5. When the inner ring 7 needs to be inserted into the outer ring 5 later, because the bottom of the buckle plate 11 is a slope, it can slide directly along the inside of the outer ring 5 until it stops after sliding into the bayonet 501, and the limiting function is completed again.

[0033] Please refer to Figure 4 and Figure 6 Slide openings 1101 are provided on both sides of one end of the buckle plate 11 away from the top plate 13 , and the inner walls of the two slide openings 1101 are slidably connected to the upper surface of the push groove 701 .

[0034] More specifically, by setting the sliding opening 1101, firstly, the pinch plate 11 can be limited so as not to fall out of the push groove 701, and secondly, a sliding trajectory of the pinch plate 11 can be limited so as not to tilt or get stuck.

[0035] Please refer to Figure 4 and Figure 6 The buckle plate 11 passes through the outer wall of one end of the push groove 701 and is fixedly connected with a cover plate 12. The bottom surface of the cover plate 12 is slidably connected to the upper surface of the inner ring 7, and the length and width of the cover plate 12 are not less than the length and width of the push groove 701.

[0036] More specifically, by providing the cover plate 12, the push groove 701 can be protected from above the push groove 701, thereby preventing insulating oil or other debris from falling into the push groove 701 during refueling and causing blockage of the push groove 701.

[0037] Please refer to Figure 3-Figure 5 A connecting ring 10 is sleeved and fixedly connected to the outer wall of the funnel 8 , and the bottom surface of the connecting ring 10 is fixedly connected to the upper surface of the refueling pipe 9 .

[0038] More specifically, by providing the connecting ring 10 , the connectivity between the funnel 8 and the refueling pipe 9 can be increased, so that the funnel 8 is not likely to fall off from the refueling pipe 9 .

[0039] Please refer to Figure 2 and Figure 3 The bottom surface of the inner ring 7 is fixedly connected with a universal tube 6, the other end of the universal tube 6 is fixedly connected to the outer wall of the oil storage barrel 3, and the funnel 8 and the refueling pipe 9 are both located inside the universal tube 6.

[0040] More specifically, by providing the universal tube 6, the support of the inner ring 7 can be increased after the inner ring 7 is pulled out from the outer ring 5, thereby preventing the inner ring 7 from collapsing downward during refueling; it should be particularly noted here that the universal tube 6 here can be made of metal or other plastic materials, as long as it has a certain degree of support and a certain degree of folding or storage after the inner ring 7 is pressed down.

[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An oil-immersed distribution transformer that is easy to fill with oil, comprising a transformer body (1), two brackets (2) mounted on the transformer body (1), an oil storage barrel (3) mounted at the other end of the two brackets (2), and a filling pipe (9) mounted at the upper end of the oil storage barrel (3), characterized in that: The outer wall of the oil storage barrel (3) is connected to an outer ring (5), the inner wall of the outer ring (5) is connected to an inner ring (7), a plurality of limit assemblies are connected between the outer ring (5) and the inner ring (7), the inner wall of the inner ring (7) is connected to a funnel (8), the outer wall of the lower end of the funnel (8) abuts against the inner wall of the refueling pipe (9), the outer wall of the outer ring (5) is threadedly connected to a sealing cover (4), and the inner ring (7), the funnel (8), the refueling pipe (9) and the plurality of limit assemblies are all located inside the sealing cover (4).

2. The oil-immersed distribution transformer that is easy to fill with oil according to claim 1, characterized in that: The inner wall of the inner ring (7) is provided with a plurality of push grooves (701), outlets (702) and spring cavities (703), and the plurality of push grooves (701) are respectively connected to the plurality of outlets (702) and the plurality of spring cavities (703), and the plurality of limit assemblies are respectively located in the plurality of connected push grooves (701), outlets (702) and spring cavities (703), and one end of the plurality of limit assemblies passes through the plurality of outlets (702).

3. The oil-immersed distribution transformer that is easy to fill with oil according to claim 2, characterized in that: The inner wall of the outer ring (5) is provided with a plurality of bayonet holes (501), and the plurality of bayonet holes (501) are respectively connected to one end of a plurality of position limiting components penetrating through the outlets (702).

4. The oil-immersed distribution transformer that is easy to fill with oil according to claim 3 is characterized in that: The limit assembly comprises a buckle plate (11), a top plate (13) and a push spring (14); the bottom surface of the buckle plate (11) is fixedly connected to the top surface of the top plate (13); one side of the top plate (13) is fixedly connected to one end of the push spring (14); the other end of the push spring (14) is fixedly connected to the inner wall of the spring cavity (703); the end of the buckle plate (11) away from the top plate (13) passes through the upper surface of the push groove (701); the end of the buckle plate (11) close to the top plate (13) passes through the outlet (702) and abuts against the inner wall of the bayonet (501).

5. The oil-immersed distribution transformer that is easy to fill with oil according to claim 4, characterized in that: Sliding openings (1101) are provided on both sides of one end of the buckle plate (11) away from the top plate (13), and the inner walls of the two sliding openings (1101) are slidably connected to the upper surface of the push groove (701).

6. An oil-immersed distribution transformer that is easy to fill with oil according to claim 4 or 5, characterized in that: The buckle plate (11) passes through the outer wall of one end of the push groove (701) and is fixedly connected to a cover plate (12). The bottom surface of the cover plate (12) is slidably connected to the upper surface of the inner ring (7), and the length and width of the cover plate (12) are not less than the length and width of the push groove (701).

7. An oil-immersed distribution transformer that is easy to fill with oil according to claim 1, 2, 3, 4 or 5, characterized in that: A connecting ring (10) is sleeved on and fixedly connected to the outer wall of the funnel (8), and the bottom surface of the connecting ring (10) is fixedly connected to the upper surface of the refueling pipe (9).

8. An oil-immersed distribution transformer that is easy to fill with oil according to claim 1, 2, 3, 4 or 5, characterized in that: The bottom surface of the inner ring (7) is fixedly connected to a universal tube (6), the other end of the universal tube (6) is fixedly connected to the outer wall of the oil storage barrel (3), and the funnel (8) and the refueling pipe (9) are both located inside the universal tube (6).

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