Oil injection and discharge structure of transformer

Abstract

The utility model discloses an oil injection and drainage structure of a transformer, which relates to the technical field of transformers and comprises a transformer body, a fixed block is fixedly mounted at the top of the transformer body, an oil storage tank is arranged at the top of the fixed block, a connecting pipe is fixedly mounted in a first connecting block, and a movable groove matched with a movable block for use is arranged at the bottom of the connecting pipe. And an extrusion block matched with the movable block for use is movably mounted in the movable groove. When new oil needs to be added into the oil storage tank, the sealing cover is rotated anticlockwise and then taken down from the connecting pipe, and when pressure is not applied to the pressing plate any more, the pressing plate can be extruded along with continuous downward extrusion of the sealing cover, so that the pressing plate drives the second pressing block to extrude downwards, and the oil storage tank is convenient to use. And the connecting rod, the connecting ring and the funnel can be retracted into the connecting pipe again, so that the whole oil injection structure is more stable during oil injection, and the practicability and the flexibility of the oil injection and discharge structure of the whole transformer body can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a transformer oil filling and draining structure. Background Art

[0002] The oil injection and discharge structure of the transformer is an important part of the transformer. It involves the normal operation and maintenance of the transformer. The following is a detailed explanation of the oil injection and discharge structure of the transformer:

[0003] First of all, the transformer oil tank is the outer shell of the transformer, with the iron core and winding inside and filled with transformer oil. Transformer oil is a mineral oil with good insulation properties. Its specifications are determined by its different freezing points, such as No. 10, No. 25, No. 45, etc. The oil tank is divided into two types: box cover type and bell type, which has the function of bearing pressure and protecting internal components.

[0004] In terms of oil filling, the transformer oil tank is equipped with an oil filling device, including oil filling pipes and other components. Before oil filling, it is necessary to conduct a thorough cleaning and inspection to ensure the cleanliness and dryness of equipment such as oil tanks, oil drums, pipelines, and oil filters. At the same time, when filling the transformer oil tank with oil, it should be filtered through a pressure oil filter before the entrance. For transformers of 220kV and above, a vacuum oil filter should be used for oil filling. Vacuum oil filling is a key process link in transformer installation. It requires the transformer to be vacuum treated before oil filling to ensure that the moisture and gas in the oil are fully removed. In terms of oil drainage, the transformer oil tank is also equipped with an oil drainage device. When draining the oil, the vent holes of the transformer and the oil tank need to be opened to prevent moisture intrusion.

[0005] The patent with the public number CN218730274U discloses an oil-immersed distribution transformer which is convenient for oil filling. The oil filling funnel can prevent oil leakage during oil filling and the introduction of impurities by directly filling the oil storage barrel. Closing the barrel cover can compress the spring so that the oil filling funnel is stored in the feed port. Unscrewing the barrel cover, the spring rebounds so that the oil filling funnel extends out of the oil inlet, which is convenient for the staff to use. The filter net in the oil filling funnel can filter impurities in the oil to prevent the impurities from affecting the service life of the transformer body.

[0006] However, the oil filling funnel is fixed in the feed port by a spring, and the oil filling will be slow and not stable enough. Moreover, when the oil is only guided into the oil tank through the oil filling funnel, the oil filling is not smooth enough and a short blockage may occur, resulting in oil leakage from the oil filling port, which is inconvenient to use. Utility Model Content

[0007] Based on this, the purpose of the utility model is to provide a transformer oil filling and discharge structure to solve the technical problem that the oil filling funnel is fixed in the feed port by a spring, and slow movement occurs during oil filling, which is not stable enough, and when the oil is only guided into the oil tank through the oil filling funnel, the oil filling is not smooth enough, and a short-term blockage may occur, causing oil leakage from the oil filling port, which is inconvenient to use.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a transformer oil filling and draining structure, comprising a transformer body, a fixed block is fixedly installed on the top of the transformer body, an oil storage tank is arranged on the top of the fixed block, a first connecting block is fixedly installed on the top of the oil storage tank, a connecting pipe is fixedly installed in the first connecting block, a funnel is arranged in the connecting pipe, a connecting ring is fixedly connected to the outside of the top of the funnel, a plurality of connecting rods are fixedly installed at the bottom of the connecting ring, a first spring is fixedly connected to the bottom of the connecting rod, a limiting block is fixedly connected to the bottom of the connecting rod, a second pressing block is arranged on the top of the limiting block, a pressing plate is fixedly connected to one side of the second pressing block, the pressing plate movably passes through the connecting pipe, a second connecting block is fixedly connected to the top of the second pressing block, a convex block is fixedly connected to the outside of the second connecting block, a movable block is movably installed in the convex block, a sealing cover is threadedly connected to the top of the connecting pipe, a first pressing block used in conjunction with the pressing plate is fixedly installed at the bottom of the sealing cover, a movable groove used in conjunction with the movable block is arranged at the bottom of the connecting pipe, and an extrusion block used in conjunction with the movable block is movably installed in the movable groove.

[0009] By adopting the above technical solution, when new oil needs to be added to the oil storage tank, the sealing cover is rotated counterclockwise and then removed from the connecting pipe. When the sealing cover moves upward and no longer applies pressure to the pressure plate, the performance of the first spring itself can drive the connecting rod, the connecting ring and the funnel to move upward. Through the mutual cooperation between the protrusion and the movable block, when the movable block moves to the movable groove position, the second spring is no longer subjected to the extrusion force, so that the movable block is stuck in the movable groove, and the position of the funnel can be limited and fixed, thereby assisting the staff to fill the oil through the funnel. After the oil filling is completed After completion, put the sealing cover on the connecting pipe and rotate the sealing cover in a clockwise direction to move the sealing cover downward. When the sealing cover is put on the connecting pipe, the extrusion block will be squeezed, and the movable block can be squeezed out of the movable groove through the extrusion block. As the sealing cover is continuously squeezed downward, the pressure plate can be squeezed, so that the pressure plate drives the second pressure block to be squeezed downward, and the connecting rod, the connecting ring and the funnel can be retracted into the connecting pipe. This structure makes the entire oil injection structure more stable during oil injection, and can improve the practicality and flexibility of the oil injection and discharge structure of the entire transformer body.

[0010] The utility model is further configured as follows: an oil filling pipe is fixedly connected to one side of the oil storage tank, the oil filling pipe passes through the top of the transformer body, an oil storage tank is fixedly connected to the top of the transformer body, one end of the oil filling pipe passes through the oil storage tank, an exhaust pipe is fixedly connected to the top of the oil storage tank, the exhaust pipe passes through the top of the transformer body, a valve is fixedly connected to one side of the exhaust pipe, and an oil discharge port is provided on one side of the oil storage tank.

[0011] By adopting the above technical solution, the oil filling pipe and the oil storage tank cooperate with each other to inject the oil in the oil storage tank into the oil storage tank, and the liquid is discharged into the transformer body through the oil discharge port at the bottom of the oil storage tank. At the same time, when draining the oil, the valve and the exhaust pipe cooperate with each other to assist the oil discharge pipe in draining the oil.

[0012] The utility model is further configured that a slide groove used in conjunction with the pressing plate is provided on the outer side of the connecting pipe, and a rubber pad is provided on the bottom of the first pressing block.

[0013] By adopting the above technical solution, the sliding groove is set so that the pressure plate can flexibly move up and down in the connecting tube, and when a rubber pad is set at the bottom of the first pressure block, the first pressure block can better contact with the pressure plate, so that the pressure plate can be flexibly squeezed.

[0014] The utility model is further configured that a second spring is fixedly installed between the movable block and the protruding block, and the diameter of the second pressing block is greater than the diameter of the first spring.

[0015] By adopting the above technical solution, the second spring and the movable block cooperate with each other so that the movable block can flexibly move in the protrusion. When the diameter of the second pressure block is larger than the diameter of the first spring, the first spring can be better squeezed.

[0016] The utility model is further configured that a filter block is arranged in the funnel, and an oil drain pipe is fixedly connected to the bottom of the funnel, a rotating block is rotatably connected in the oil drain pipe, and a plurality of groups of openings are provided on the rotating block.

[0017] By adopting the above technical scheme, the filter block provided can filter the oil to a certain extent, preventing other impurities from entering the oil storage tank. Through the cooperation between the oil drain pipe and the rotating block, the oil can be assisted to leak out of the oil drain pipe quickly, making the oil filling smoother without temporary blockage, thereby improving the oil filling efficiency.

[0018] The utility model is further configured such that a slot for cooperating with the funnel and the connecting ring is provided on the top of the connecting tube, and a movable cavity for cooperating with the connecting rod and the first spring is provided in the connecting tube.

[0019] By adopting the above technical solution, the provided clamping groove can support and fix the connecting ring and the funnel, and through the movable cavity, the connecting rod and the first spring can flexibly move up and down in the connecting tube.

[0020] The utility model is further configured that a support leg is provided at the bottom of the transformer body, and an anti-corrosion coating is provided on the outer side of the support leg.

[0021] By adopting the above technical solution, the provided support legs and anti-corrosion coating can not only support and fix the transformer body, but also extend its service life.

[0022] In summary, the utility model mainly has the following beneficial effects:

[0023] 1. When new oil needs to be added to the oil storage tank, the utility model rotates the sealing cover counterclockwise and then removes the sealing cover from the connecting pipe. When the sealing cover moves upward and no longer applies pressure to the pressure plate, the performance of the first spring itself can drive the connecting rod, the connecting ring and the funnel to move upward. Through the mutual cooperation between the protrusion and the movable block, when the movable block moves to the movable groove position, the second spring is no longer subjected to the extrusion force, so that the movable block is stuck in the movable groove, and the position of the funnel can be limited and fixed, so as to assist the staff to fill the oil through the funnel. After the oil filling is completed, After that, after putting the sealing cover on the connecting pipe, rotate the sealing cover in a clockwise direction to move the sealing cover downward. When the sealing cover is put on the connecting pipe, it will squeeze the extrusion block, and the movable block can be squeezed out of the movable groove through the extrusion block. As the sealing cover is continuously squeezed downward, the pressing plate can be squeezed, so that the pressing plate drives the second pressing block to be squeezed downward, and the connecting rod, the connecting ring and the funnel can be retracted into the connecting pipe. With this structure, the entire oil injection structure can be more stable during oil injection, which can improve the practicality and flexibility of the oil injection and discharge structure of the entire transformer body.

[0024] 2. The utility model can filter the oil to a certain extent through the filter block, preventing other impurities from entering the oil storage tank. Through the cooperation between the oil drain pipe and the rotating block, the oil can be assisted to leak out of the oil drain pipe quickly, making the oil filling smoother without short-term blockage, thereby improving the oil filling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 It is a schematic diagram of a partial structural cross-section of the utility model;

[0027] Figure 3 It is a schematic diagram of the main structural section structure of the utility model;

[0028] Figure 4 This is a schematic diagram of the main structure split effect of the utility model;

[0029] Figure 5 For the utility model Figure 2 Schematic diagram of the magnified effect of A in the middle;

[0030] Figure 6 For the utility model Figure 3 Schematic diagram of the magnified effect of B in the middle;

[0031] Figure 7 For the utility model Figure 4 Schematic diagram of the magnified effect of C in the middle.

[0032] In the figure: 1. transformer body; 2. supporting leg; 3. fixing block; 4. oil storage tank; 5. connecting block; 6. sealing cover; 7. oil filling pipe; 8. exhaust pipe; 9. valve; 10. oil storage tank; 11. oil discharge port; 12. first spring; 13. connecting ring; 14. filter block; 15. funnel; 16. rotating block; 17. oil discharge pipe; 18. connecting rod; 19. slide; 20. extrusion block; 21. movable groove; 22. card slot; 23. first pressure block; 24. connecting pipe; 25. connecting block; 26. convex block; 27. movable block; 28. second spring; 29. ​​pressure plate; 30. second pressure block; 31. limit block. DETAILED DESCRIPTION

[0033] 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. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0034] The following describes an embodiment of the utility model based on its overall structure.

[0035] A transformer oil filling and draining structure, such as Figure 1-7As shown, it includes a transformer body 1, a fixed block 3 is fixedly installed on the top of the transformer body 1, an oil storage tank 4 is arranged on the top of the fixed block 3, a first connecting block 5 is fixedly installed on the top of the oil storage tank 4, a connecting pipe 24 is fixedly installed in the first connecting block 5, a funnel 15 is arranged in the connecting pipe 24, a connecting ring 13 is fixedly connected to the outside of the top of the funnel 15, a plurality of connecting rods 18 are fixedly installed on the bottom of the connecting ring 13, a first spring 12 is fixedly connected to the bottom of the connecting rod 18, a limiting block 31 is fixedly connected to the bottom of the connecting rod 18, a second pressing block 30 is arranged on the top of the limiting block 31, A pressing plate 29 is fixedly connected to one side of the second pressing block 30, and the pressing plate 29 movably penetrates the connecting tube 24. A second connecting block 25 is fixedly connected to the top of the second pressing block 30, a protrusion 26 is fixedly connected to the outer side of the second connecting block 25, and a movable block 27 is movably installed in the protrusion 26. A sealing cover 6 is threadedly connected to the top of the connecting tube 24, and a first pressing block 23 used in conjunction with the pressing plate 29 is fixedly installed at the bottom of the sealing cover 6. A movable groove 21 used in conjunction with the movable block 27 is provided at the bottom of the connecting tube 24, and an extrusion block 20 used in conjunction with the movable block 27 is movably installed in the movable groove 21.

[0036] During use, when new oil needs to be added to the oil storage tank 4, the sealing cover 6 is rotated counterclockwise and then removed from the connecting pipe 24. When the sealing cover 6 moves upward and no longer applies pressure to the pressure plate 29, the first spring 12 can drive the connecting rod 18, the connecting ring 13 and the funnel 15 to move upward. Through the cooperation between the protrusion 26 and the movable block 27, when the movable block 27 moves to the position of the movable groove 21, the second spring 28 is no longer subjected to the extrusion force, so that the movable block 27 is stuck in the movable groove 21, and the position of the funnel 15 can be limited and fixed, thereby assisting the staff to fill the oil through the funnel 15. After the oil filling is completed After placing the sealing cover 6 on the connecting tube 24, the sealing cover 6 is rotated in a clockwise direction to move the sealing cover 6 downward. When the sealing cover 6 is sleeved on the connecting tube 24, the extrusion block 20 is squeezed, and the movable block 27 can be squeezed out of the movable groove 21 through the extrusion block 20. As the sealing cover 6 is continuously squeezed downward, the pressing plate 29 can be squeezed, so that the pressing plate 29 drives the second pressing block 30 to be squeezed downward, and the connecting rod 18, the connecting ring 13 and the funnel 15 can be retracted into the connecting tube 24. With this structure, the entire oil injection structure is more stable during oil injection, which can improve the practicality and flexibility of the oil injection and discharge structure of the entire transformer body 1.

[0037] The oil filling pipe 7 and the oil storage tank 10 cooperate with each other to inject the oil in the oil storage tank 4 into the oil storage tank 10, and the oil is discharged into the transformer body 1 through the oil discharge port 11 at the bottom of the oil storage tank 10. At the same time, when discharging the oil, the valve 9 and the exhaust pipe 8 cooperate with each other to assist the oil filling pipe 7 in discharging the oil, and the slide groove 19 is arranged so that the pressure plate 29 can be flexibly moved up and down in the connecting pipe 24. When a rubber pad is arranged at the bottom of the first pressure block 23, the first pressure block 23 can be better in contact with the pressure plate 29, so that the pressure plate 29 can be flexibly squeezed.

[0038] The second spring 28 and the movable block 27 provided in this embodiment cooperate with each other so that the movable block 27 can flexibly move in the protrusion 26. When the diameter of the second pressure block 30 is larger than the diameter of the first spring 12, the first spring 12 can be squeezed better. The filter block 14 provided can filter the oil to a certain extent to prevent other impurities from entering the oil storage tank 4. The cooperation between the oil drain pipe 17 and the rotating block 16 can assist the oil to quickly leak out of the oil drain pipe 17, making the oil filling smoother without short-term blockage, thereby improving the oil filling efficiency. Secondly, the slot 22 is provided so as to support and fix the connecting ring 13 and the funnel 15, and through the movable cavity, the connecting rod 18 and the first spring 12 can flexibly move up and down in the connecting pipe 24. Finally, the support leg 2 and the anti-corrosion coating provided can support and fix the transformer body 1 while extending its service life.

[0039] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A transformer oil filling and draining structure, comprising a transformer body (1), characterized in that: A fixing block (3) is fixedly mounted on the top of the transformer body (1), an oil storage tank (4) is arranged on the top of the fixing block (3), a first connecting block (5) is fixedly mounted on the top of the oil storage tank (4), a connecting pipe (24) is fixedly mounted inside the first connecting block (5), a funnel (15) is arranged inside the connecting pipe (24), a connecting ring (13) is fixedly connected to the outside of the top of the funnel (15), a plurality of connecting rods (18) are fixedly mounted on the bottom of the connecting ring (13), a first spring (12) is fixedly connected to the bottom of the connecting rod (18), a limiting block (31) is fixedly connected to the bottom of the limiting block (31), a second pressing block (30) is arranged on the top of the second pressing block (30), A pressure plate (29) is fixedly connected to one side, and the pressure plate (29) movably passes through the connecting tube (24); a second connecting block (25) is fixedly connected to the top of the second pressure block (30); a protrusion (26) is fixedly connected to the outer side of the second connecting block (25); a movable block (27) is movably installed in the protrusion (26); a sealing cover (6) is threadedly connected to the top of the connecting tube (24); a first pressure block (23) used in conjunction with the pressure plate (29) is fixedly installed at the bottom of the sealing cover (6); a movable groove (21) used in conjunction with the movable block (27) is provided at the bottom of the connecting tube (24); an extrusion block (20) used in conjunction with the movable block (27) is movably installed in the movable groove (21).

2. The transformer oil filling and draining structure according to claim 1 is characterized in that: An oil filling pipe (7) is fixedly connected to one side of the oil storage tank (4), the oil filling pipe (7) passes through the top of the transformer body (1), an oil storage tank (10) is fixedly connected to the top of the transformer body (1), one end of the oil filling pipe (7) passes through the oil storage tank (10), an exhaust pipe (8) is fixedly connected to the top of the oil storage tank (10), the exhaust pipe (8) passes through the top of the transformer body (1), a valve (9) is fixedly connected to one side of the exhaust pipe (8), and an oil discharge port (11) is provided on one side of the oil storage tank (10).

3. The transformer oil filling and draining structure according to claim 1 is characterized in that: The outer side of the connecting pipe (24) is provided with a slide groove (19) used in conjunction with the pressing plate (29), and a rubber pad is provided at the bottom of the first pressing block (23).

4. The transformer oil filling and draining structure according to claim 1 is characterized in that: A second spring (28) is fixedly installed between the movable block (27) and the protruding block (26); the diameter of the second pressing block (30) is greater than the diameter of the first spring (12).

5. The transformer oil filling and draining structure according to claim 1 is characterized in that: A filter block (14) is arranged in the funnel (15), and an oil drain pipe (17) is fixedly connected to the bottom of the funnel (15). A rotating block (16) is rotatably connected in the oil drain pipe (17), and a plurality of groups of openings are provided on the rotating block (16).

6. The transformer oil filling and draining structure according to claim 1 is characterized in that: The top of the connecting tube (24) is provided with a slot (22) for use with the funnel (15) and the connecting ring (13), and the inside of the connecting tube (24) is provided with a movable cavity for use with the connecting rod (18) and the first spring (12).

7. The transformer oil filling and draining structure according to claim 1 is characterized in that: A support leg (2) is provided at the bottom of the transformer body (1), and an anti-corrosion coating is provided on the outer side of the support leg (2).

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