An insulating oil replacement device for an oil-immersed transformer

Abstract

The present invention provides an insulating oil replacement device for an oil-immersed transformer, which relates to the technical field of transformers and includes an oil tank and a support frame. An oil cover is installed at the upper end of the oil tank through bolts, and a replacement mechanism is installed on one side of the oil tank. In the present invention, the user installs the connecting frame through the cooperation between the engaging frame and the engaging groove, inserts the liquid guide pipe into the connecting pipe, and then the user pulls the temporary storage box, causing the temporary storage box to rotate around the fixed rod so that the liquid discharge pipe is connected to the temporary storage box. Then the user can open the valve to discharge the waste oil in the oil tank. After the discharge is completed, the user can place the storage barrel filled with new oil into the pouring groove, and the new oil will flow into the oil tank along the liquid guide pipe and the connecting pipe, thus eliminating the need to open the oil cover, reducing the working difficulty of the user, and also avoiding the situation where external impurities enter the oil tank and cause pollution, improving the overall service life.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and more particularly, to an insulating oil replacement device for an oil-immersed transformer. Background Art

[0002] During the use of an oil-immersed transformer, cooling is required. Therefore, in order to ensure that the oil-immersed transformer will not be damaged due to high temperature during use, insulating oil is often injected into the transformer for auxiliary cooling. However, during the long-term use of the insulating oil inside the transformer, it is often necessary to regularly replace the insulating oil inside the transformer to avoid the situation where the cooling effect is reduced and the transformer is damaged after the insulating oil fails. When replacing the insulating oil, the user often needs to open the oil cover and then extract and replace the insulating oil inside the fuel tank. However, this replacement method is not only complex to operate, but also various external impurities will fall into the fuel tank during the replacement of the insulating oil, contaminating the new oil inside the fuel tank, reducing the service life of the new oil, and at the same time, the iron core inside the fuel tank will also be damaged. Therefore, we propose an insulating oil replacement device for an oil-immersed transformer to solve the above problems. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the present invention provides an insulating oil replacement device for an oil-immersed transformer, which solves the problem that when replacing the insulating oil, the user often needs to open the oil cover and then extract and replace the insulating oil inside the fuel tank. However, this replacement method is not only complex to operate, but also various external impurities will fall into the fuel tank during the replacement of the insulating oil, contaminating the new oil inside the fuel tank, reducing the service life of the new oil, and at the same time, the iron core inside the fuel tank will also be damaged.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] An insulating oil replacement device for an oil-immersed transformer, comprising a fuel tank and a support frame. The upper end of the fuel tank is installed with an oil cover through bolts. The support frame is installed on the ground, and the fuel tank is installed on the support frame. A replacement mechanism is installed on one side of the fuel tank. An oil conservator is installed on the upper end of the oil cover. The replacement mechanism is connected to the oil conservator. An iron core is installed between the fuel tank and the oil cover. A plurality of bushings are installed on the upper end of the oil cover and are connected to the iron core. The replacement mechanism includes a connecting frame, which is snap-fitted on one side of the fuel tank. One side of the upper end of the connecting frame is penetrated and installed with a liquid guide pipe, and the lower end of the liquid guide pipe is connected to the oil conservator. A storage barrel is snap-fitted on the upper end of the connecting frame. A temporary storage box is movably installed at the lower end of the connecting frame. A drain pipe is penetrated and installed at the lower end of the fuel tank close to the connecting frame, and the drain pipe is snap-fitted and connected to the temporary storage box. A hose is penetrated and installed at the lower end inside the temporary storage box.

[0006] Preferably, engaging frames are fixedly installed at the upper and lower ends of the connecting frame near the fuel tank side, engaging grooves are respectively provided on one side of the fuel tank and the upper surface of the fuel cap, and the engaging frames are respectively engaged and installed inside the engaging grooves.

[0007] Preferably, a connecting pipe is fixedly installed through the upper end of the oil pillow, a sealing cover is installed at the upper end of the connecting pipe through threads, a pouring groove is provided at the upper end of the connecting frame, a liquid guide pipe is installed through one end inside the pouring groove, and the lower end of the liquid guide pipe is engaged and installed inside the connecting pipe.

[0008] Preferably, the lower end inside the pouring groove is inclined, a storage bucket is placed inside the pouring groove, an elastic cord is installed at the upper end of the connecting frame, and the elastic cord is in contact with the storage bucket.

[0009] Preferably, a storage groove is provided at the upper end of the connecting frame on the side away from the fuel tank, the temporary storage box is engaged and connected with the storage groove, placing grooves are respectively provided inside the temporary storage box and the connecting frame, magnets are respectively installed inside the placing grooves, and the magnets attract each other magnetically.

[0010] Preferably, a movable groove is provided at the lower end of the storage groove, a fixed rod is fixedly installed at the lower end inside the movable groove, a connecting block is movably installed inside the movable groove, and one end of the connecting block movably penetrates through the outer side of the rod body of the fixed rod, and the end of the connecting block away from the fixed rod is connected to the temporary storage box.

[0011] Preferably, a retention groove is provided inside the temporary storage box, the lower end inside the retention groove is inclined, and one end of the drain pipe is engaged and installed inside the retention groove.

[0012] Preferably, a valve is installed inside the drain pipe.

[0013] Preferably, the hose penetrates through one end inside the retention groove, the lower end of the hose coincides with the recycling box up and down, and the recycling box is placed at the lower end of the support frame.

[0014] Preferably, filter meshes are provided inside both the liquid guide pipe and the connecting pipe.

[0015] 1. In the present invention, the user installs the connecting frame through the cooperation between the engaging frame and the engaging groove, inserts the liquid guide pipe into the inside of the connecting pipe, and then the user pulls the temporary storage box, causing the temporary storage box to rotate around the fixed rod, so that the drain pipe is connected to the temporary storage box. Then the user can open the valve to drain the waste oil in the fuel tank. After the drainage is completed, the user can put the storage barrel filled with new oil into the pouring groove, and the new oil will flow into the fuel tank along the liquid guide pipe and the connecting pipe, thus eliminating the need to open the fuel cap, reducing the work difficulty of the user, and at the same time avoiding the situation that external impurities enter the fuel tank and cause pollution, and improving the overall service life.

[0016] 2. After the user puts the storage barrel into the pouring groove in the present invention, due to the inclined shape inside the pouring groove, the storage barrel also forms an inclined shape, which facilitates the flow of the liquid inside the storage barrel. And through the positioning of the storage barrel by the elastic rope, there is no need for the user to lift the storage barrel, reducing the work difficulty of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the three-dimensional structure schematic diagram of the present invention;

[0018] Figure 2 is the front view structure schematic diagram of the present invention;

[0019] Figure 3 is the side view structure schematic diagram of the present invention;

[0020] Figure 4 is Figure 3 the three-dimensional schematic diagram of the sectional structure at A-A in

[0021] Figure 5 is Figure 2 the three-dimensional schematic diagram of the sectional structure at B-B in

[0022] Figure 6 is Figure 4 the enlarged three-dimensional structure schematic diagram at C in

[0023] Figure 7 is Figure 4 the enlarged three-dimensional structure schematic diagram at D in

[0024] Figure 8 is Figure 4 the enlarged three-dimensional structure schematic diagram at E in

[0025] In the figure: 1, fuel tank; 2, fuel cap; 3, support frame; 4, oil conservator; 5, replacement mechanism; 501, connecting frame; 502, engaging frame; 503, engaging groove; 504, tipping groove; 505, storage barrel; 506, liquid guide pipe; 507, elastic cord; 508, storage groove; 509, movable groove; 510, fixed rod; 511, connecting block; 512, magnet; 513, placement groove; 514, temporary storage box; 515, retention groove; 516, drain pipe; 517, valve; 518, hose; 519, recycling box; 6, sleeve; 7, iron core; 8, connecting pipe. Detailed implementation mode

[0026] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

[0027] As Figures 1 to 8 shown, an insulating oil replacement device for an oil-immersed transformer includes a fuel tank 1 and a support frame 3. The upper end of the fuel tank 1 is installed with a fuel cap 2 through bolts. The support frame 3 is installed on the ground, and the fuel tank 1 is installed on the support frame 3. A replacement mechanism 5 is installed on one side of the fuel tank 1. An oil conservator 4 is installed on the upper end of the fuel cap 2. The replacement mechanism 5 is connected to the oil conservator 4. An iron core 7 is installed between the fuel tank 1 and the fuel cap 2. A plurality of sleeves 6 are installed on the upper end of the fuel cap 2, and the sleeves 6 are connected to the iron core 7. The replacement mechanism 5 includes a connecting frame 501. The connecting frame 501 is snap-fitted on one side of the fuel tank 1. A liquid guide pipe 506 is installed through one side of the upper end of the connecting frame (501). The lower end of the liquid guide pipe 506 is connected to the oil conservator 4. A storage barrel 505 is snap-fitted on the upper end of the connecting frame 501. A temporary storage box 514 is movably installed at the lower end of the connecting frame 501. A drain pipe 516 is installed through the lower end of one side of the fuel tank 1 close to the connecting frame 501. The drain pipe 516 is snap-fitted with the temporary storage box 514. A hose 518 is installed through the lower end of the inside of the temporary storage box 514.

[0028] As Figure 7 shown, wherein, engaging frames 502 are respectively fixedly installed at the upper and lower ends of the connecting frame 501 close to one side of the fuel tank 1. Engaging grooves 503 are respectively provided on one side of the fuel tank 1 and the upper surface of the fuel cap 2. The engaging frames 502 are respectively snap-fitted inside the engaging grooves 503.

[0029] Through the cooperation between the clamping frame 502 and the clamping groove 503, the installation work of the connecting frame 501 is carried out, so that the transformer casings installed at various heights can be connected, eliminating the need for the user to manually support, reducing the overall working difficulty, and also keeping the connecting frame 501 in a stable state during the working process.

[0030] As Figure 5 shown in Figure 6 , the upper end of the conservator 4 is fixedly penetrated and installed with a connecting pipe 8. The upper end of the connecting pipe 8 is installed with a sealing cover through threads. The upper end of the connecting frame 501 is provided with a pouring groove 504. One end inside the pouring groove 504 is penetrated and installed with a liquid guide pipe 506. The lower end of the liquid guide pipe 506 is clamped and installed inside the connecting pipe 8. The lower end inside the pouring groove 504 is inclined. A storage bucket 505 is placed inside the pouring groove 504. The upper end of the connecting frame 501 is installed with an elastic rope 507, and the elastic rope 507 is in contact with the storage bucket 505.

[0031] When installing the connecting frame 501, the user first removes the sealing cover on the connecting pipe 8. Thus, during the installation process of the connecting frame 501, the liquid guide pipe 506 can be directly inserted into the inside of the connecting pipe 8, which is convenient for new oil to flow into the fuel tank 1 and also continues to seal the connecting pipe 8.

[0032] Then, after the connecting frame 501 is installed and the waste oil inside the fuel tank 1 is drained, the user can put the storage bucket 505 containing new oil or cleaning liquid into the pouring groove 504, so that the new oil or cleaning liquid inside the storage bucket 505 is injected into the conservator 4 along the liquid guide pipe 506 and the connecting pipe 8, and then flows into the fuel tank 1 along the conservator 4, realizing the work of cleaning or new oil replacement, which is more simple and convenient.

[0033] When the storage bucket 505 is placed inside the pouring groove 504 again, the inclined shape inside the pouring groove 504 is used to tilt and support the storage bucket 505, facilitating the flow of the liquid inside the storage bucket 505, and avoiding liquid leakage through the inclined surface.

[0034] The elastic rope 507 is used to assist in positioning the storage bucket 505 by elastically fitting on the surface of the storage bucket 505 after the storage bucket 505 is placed inside the pouring groove 504, making the storage bucket 505 more stable.

[0035] As Figure 4 shown in Figure 8As shown in the figure, on the upper end of the connecting frame 501 away from the fuel tank 1, there is a storage groove 508. The temporary storage box 514 is snap-connected to the storage groove 508. Inside the connecting frame 501 and the temporary storage box 514, there are placement grooves 513 respectively. Inside the placement grooves 513, magnets 512 are installed respectively. The magnets 512 attract each other magnetically. At the lower end of the storage groove 508, there is a movable groove 509. At the lower end inside the movable groove 509, a fixed rod 510 is fixedly installed. Inside the movable groove 509, a connecting block 511 is movably installed. One end of the connecting block 511 movably penetrates and is installed outside the rod body of the fixed rod 510. The end of the connecting block 511 away from the fixed rod 510 is connected to the temporary storage box 514. Inside the temporary storage box 514, there is a retention groove 515. The lower end inside the retention groove 515 is inclined. One end of the drain pipe 516 is snap-connected to the inside of the retention groove 515. A valve 517 is installed inside the drain pipe 516. One end of the hose 518 penetrates and is installed inside the retention groove 515. The lower end of the hose 518 coincides vertically with the recovery box 519. The recovery box 519 is placed at the lower end of the support frame 3.

[0036] After the connecting frame 501 is installed, the user pulls the temporary storage box 514, causing the connecting block 511 to rotate around the fixed rod 510 with the fixed rod 510 as the axis. Finally, the temporary storage box 514 and the drain pipe 516 are snap-connected. Then the user can open the valve 517, allowing the waste oil inside the fuel tank 1 to be discharged along the drain pipe 516, so that the waste oil flows into the inside of the retention groove 515. Finally, it can flow into the inside of the recovery box 519 along the hose 518 for unified recovery, avoiding the situation of waste oil leakage to the outside and causing environmental pollution.

[0037] Through the magnetic attraction between the magnets 512, the connecting frame 501 and the temporary storage box 514 are connected, thus facilitating the user to climb the support frame 3 and reducing the interference of the connecting frame 501 to the user.

[0038] As Figure 6 shown, inside both the liquid guide pipe 506 and the connecting pipe 8, there are filter meshes.

[0039] Through the filter meshes, the cleaning liquid or new oil flowing between the liquid guide pipe 506 and the connecting pipe 8 is filtered and protected, so as to avoid impurities from the outside floating into the pouring groove 504 and flowing into the fuel tank 1 along with the new oil or cleaning liquid when the new oil or cleaning liquid flows along the pouring groove 504 and the liquid guide pipe 506, better protecting the inside of the fuel tank 1.

[0040] The working principle of this oil-immersed transformer insulating oil replacement device:

[0041] In use, first, the user removes the sealing cap on the connecting pipe 8, and then installs the connecting frame 501 through the cooperation between the engaging frame 502 and the engaging groove 503. During the installation of the connecting frame 501, the liquid guide pipe 506 can be directly inserted into the interior of the connecting pipe 8. After the installation of the connecting frame 501 is completed, the user pulls the temporary storage box 514, causing the connecting block 511 to rotate around the fixed rod 510 as the axis, and finally achieving a snap connection between the temporary storage box 514 and the drain pipe 516. Then the user can open the valve 517, allowing the waste oil in the fuel tank 1 to be discharged along the drain pipe 516, flowing the waste oil into the interior of the retention tank 515, and finally flowing into the interior of the recycling box 519 along the hose 518 for unified recycling. After the waste oil in the fuel tank 1 is completely discharged, if it is necessary to clean the interior of the fuel tank 1, first close the valve 517 to prevent the leakage of the cleaning liquid. Then the user places the storage bucket 505 containing the cleaning liquid into the pouring groove 504, so that the cleaning liquid in the storage bucket 505 is injected into the oil pillow 4 along the liquid guide pipe 506 and the connecting pipe 8, and then flows into the fuel tank 1 along the oil pillow 4 to achieve cleaning. After the cleaning is completed, let the liquid be discharged along the drain pipe 516. After the cleaning liquid is completely discharged, close the valve 517 again. Then place the storage bucket 505 containing new oil into the pouring groove 504, so that the new oil in the storage bucket 505 is injected into the oil pillow 4 along the liquid guide pipe 506 and the connecting pipe 8, and then flows into the fuel tank 1 along the oil pillow 4 to achieve replacement. Finally, the user can remove the connecting frame 501 and install the sealing cap through threading.

[0042] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, based on the above description, other different forms of changes or variations can be made. It is impossible to list all the implementation manners here. Any obvious changes or variations derived from the technical solutions of the present invention still fall within the protection scope of the present invention.

Claims

1. An insulating oil replacement device for an oil-immersed transformer, comprising an oil tank (1) and a support frame (3), characterized in that: The upper end of the fuel tank (1) is installed with an oil cap (2) through bolts. The support frame (3) is installed on the ground, and the fuel tank (1) is installed on the support frame (3). A replacement mechanism (5) is installed on one side of the fuel tank (1). An oil pillow (4) is installed on the upper end of the oil cap (2). The replacement mechanism (5) is connected to the oil pillow (4). An iron core (7) is installed between the fuel tank (1) and the oil cap (2). A number of sleeves (6) are installed on the upper end of the oil cap (2), and the sleeves (6) are connected to the iron core (7). The replacement mechanism (5) includes a connecting frame (501). The connecting frame (501) is snap-fitted on one side of the fuel tank (1). A liquid guide pipe (506) is installed through the upper end side of the connecting frame (501). The lower end of the liquid guide pipe (506) is connected to the oil pillow (4). A storage barrel (505) is snap-fitted on the upper end of the connecting frame (501). A temporary storage box (514) is movably installed at the lower end of the connecting frame (501). A liquid discharge pipe (516) is installed through the lower end of the fuel tank (1) close to the connecting frame (501). The liquid discharge pipe (516) is snap-fitted and connected to the temporary storage box (514). A flexible hose (518) is installed through the lower end inside the temporary storage box (514). Clamping frames (502) are respectively fixedly installed at the upper and lower ends of the connecting frame (501) close to one side of the fuel tank (1). Clamping grooves (503) are respectively provided on one side of the fuel tank (1) and the upper surface of the oil cap (2). The clamping frames (502) are respectively snap-fitted inside the clamping grooves (503). A connecting pipe (8) is fixedly installed through the upper end of the oil pillow (4). A sealing cover is installed on the upper end of the connecting pipe (8) by means of threads. A pouring groove (504) is provided at the upper end of the connecting frame (501). A liquid guide pipe (506) is installed through one end inside the pouring groove (504). The lower end of the liquid guide pipe (506) is snap-fitted inside the connecting pipe (8). A storage groove (508) is provided at the upper end of the connecting frame (501) away from the fuel tank (1). The temporary storage box (514) is snap-fitted and connected to the storage groove (508). Placing grooves (513) are respectively provided inside the temporary storage box (514) and the connecting frame (501). Magnets (512) are respectively installed inside the placing grooves (513). The magnets (512) attract each other magnetically. A movable groove (509) is provided at the lower end of the storage groove (508). A fixed rod (510) is fixedly installed at the lower end inside the movable groove (509). A connecting block (511) is movably installed inside the movable groove (509), and one end of the connecting block (511) is movably installed through the outer side of the rod body of the fixed rod (510). The end of the connecting block (511) away from the fixed rod (510) is connected to the temporary storage box (514). Filter meshes are respectively provided inside the liquid guide pipe (506) and the connecting pipe (8).

2. The oil-immersed transformer insulating oil replacement device according to claim 1, wherein: The inner lower end of the tipping chute (504) is inclined. A storage barrel (505) is placed inside the tipping chute (504). An elastic cord (507) is installed at the upper end of the connecting frame (501), and the elastic cord (507) is in contact with the storage barrel (505).

3. An insulating oil replacement device for an oil-immersed transformer according to claim 1, characterized in that: A retention groove (515) is provided inside the temporary storage box (514). The inner lower end of the retention groove (515) is inclined. One end of the drain pipe (516) is snap-fitted inside the retention groove (515).

4. The oil-immersed transformer insulating oil replacement device according to claim 1, wherein: A valve (517) is installed inside the drain pipe (516).

5. The oil-immersed transformer insulating oil replacement device according to claim 1, characterized in that: The hose (518) is installed through one end inside the retention groove (515). The lower end of the hose (518) coincides vertically with the recycling box (519), and the recycling box (519) is placed at the lower end of the support frame (3).

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