Electric furnace transformer

Abstract

The utility model relates to the technical field of transformers, and discloses an electric furnace transformer which comprises a transformer body, an upper oil return pipe and a lower oil return pipe, a box body is fixedly connected to the side wall of one side of the transformer body, an upper cavity and a lower cavity are formed in the box body respectively, the upper oil return pipe and the lower oil return pipe are communicated with the upper cavity and the lower cavity respectively, and the upper oil return pipe and the lower oil return pipe are connected with the transformer body. The upper surface of the box body is in threaded connection with a cover pipe, and the lower end of the cover pipe communicates with a filter screen. According to the utility model, the box body, the cover pipe, the filter screen and the like are matched for use, during use, oil returned by the upper oil return pipe enters the lower cavity through the upper cavity and the filter screen, then the oil in the lower cavity completes backflow through the lower oil return pipe, and when the filter screen needs to be disassembled and cleaned, the cover pipe can be directly rotated open, and the filter screen can be taken down; and when the filter screen is taken down, the upper oil return pipe and the lower oil return pipe cannot block each other, so that the filter screen can be conveniently taken down for cleaning, and convenience and rapidness are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, and particularly relates to an electric furnace transformer. Background Art

[0002] In large industrial enterprises, such as the metallurgical industry, chemical industry, machinery industry, etc., electric furnaces are important process equipment, and the importance of electric furnace transformers, which are the power supplies for these electric furnaces, is self-evident. An electric furnace transformer is a transformer that supplies power to these industrial electric furnaces and can reduce the relatively high grid voltage to the working voltage required by the electric furnace.

[0003] In a high-impedance large-current electric furnace transformer disclosed in the authorized publication number CN207676785U, it includes a lower cleaner, a box body, a removal plate, a lower cushion plate, an oil return pipeline, an oil pipe cleaner, an oil pipe cushion plate, and a radiator fin. The radiator fins are arranged on both sides of the box body. The oil return pipeline is arranged inside the radiator fin. A cleaning pipe is arranged on the oil return pipeline. The oil pipe cleaner is arranged inside the cleaning pipe. An upper oil return pipe is arranged above the oil pipe cleaner. An upper valve is arranged above the upper oil return pipe. The oil pipe cushion plate is arranged below the oil pipe cleaner. A lower oil return pipe is arranged below the oil pipe cushion plate. A lower valve is arranged below the lower oil return pipe. The lower cleaner is arranged below the lower cushion plate. The beneficial effects are as follows: The cleaning device has a simple structure, is safe and environmentally friendly, can be recycled infinitely, is convenient to install and remove, has good economy, and can remove internal debris and cool the transformer.

[0004] When the above-mentioned transformer is in use, during the operation of the transformer, the oil pipe cleaner will clean and filter the cooling oil flowing through the cleaning pipe. However, when removing the oil pipe cleaner for cleaning, it is necessary to disassemble and disconnect the connection of the upper and lower oil return pipes to remove the oil pipe cleaner for cleaning, which is not convenient enough. Content of the Utility Model

[0005] The purpose of the utility model is to solve the problems existing in the prior art, and an electric furnace transformer is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] An electric furnace transformer includes a transformer main body, an upper oil return pipe and a lower oil return pipe. A box body is fixedly connected to one side side wall of the transformer main body. An upper cavity and a lower cavity are respectively opened inside the box body. The upper oil return pipe and the lower oil return pipe are respectively communicated with the upper cavity and the lower cavity. A cover pipe is threadedly connected to the upper surface of the box body. The lower end of the cover pipe is communicated with a filter net. One end of the filter net penetrates through the box body and extends to be arranged inside the lower cavity. A plurality of oil inlet grooves are opened on the side wall of the cover pipe.

[0008] Preferably, a rotating rod is rotatably connected to the inner wall of the box body, and both ends of the rotating rod are located inside the upper cavity and the lower cavity respectively. Grooves are provided at both ends of the rotating rod, and one ends of the upper oil return pipe and the lower oil return pipe respectively extend into the two grooves. Through holes are provided on the outer wall of the rotating rod located in the upper cavity and the lower cavity, and on the upper oil return pipe and the lower oil return pipe. A driving connection mechanism is arranged below the filter screen.

[0009] Preferably, the driving connection mechanism includes a rectangular block fixed to the filter screen, and a rectangular pipe is slidably connected to one end of the rectangular block. The rectangular pipe is rotatably connected to the inner wall of the lower cavity, and a first gear is fixedly sleeved on the outer wall of the rectangular pipe. A second gear is fixedly sleeved on the outer wall of the rotating rod located in the lower cavity, and the second gear meshes with the first gear.

[0010] Preferably, a chamfer is provided at one end of the rectangular block.

[0011] Preferably, an observation groove is provided on the outer wall of the box body, and a transparent glass is fixedly connected to the inner wall of the observation groove.

[0012] Preferably, a soft sleeve is fixedly sleeved on the outer wall of the cover pipe.

[0013] Preferably, a groove body is provided on the upper surface of the cover pipe, and a mark is fixedly connected to the bottom of the groove body.

[0014] Compared with the prior art, the present utility model has the following beneficial effects:

[0015] In the present utility model, by setting up the box body, the cover pipe and the filter screen in cooperation, when in use, the oil returned by the upper oil return pipe enters the lower cavity through the upper cavity and the filter screen, and then the oil in the lower cavity completes the reflux through the lower oil return pipe. When it is necessary to disassemble and clean the filter screen, the cover pipe can be directly rotated open, and the filter screen can be taken off. When the filter screen is taken off, the upper oil return pipe and the lower oil return pipe will not block, so that the device is convenient to take off the filter screen for cleaning, which is convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. 1 is a schematic diagram of the overall structure of an electric furnace transformer proposed by the present utility model;

[0017] Figure 2 FIG. 2 is a schematic diagram of a partial structure of an electric furnace transformer proposed by the present utility model;

[0018] Figure 3 FIG. 3 is a schematic diagram of a partial sectional structure of an electric furnace transformer proposed by the present utility model;

[0019] Figure 4 FIG. 4 Figure 3 is an enlarged schematic diagram of the structure at A in FIG. 3.

[0020] In the figure: 1. Transformer main body; 2. Upper return oil pipe; 3. Lower return oil pipe; 4. Box body; 5. Upper cavity; 6. Lower cavity; 7. Cover pipe; 8. Filter screen; 9. Oil inlet groove; 10. Rotating rod; 11. Groove; 12. Through hole; 13. Rectangular block; 14. Rectangular pipe; 15. First gear; 16. Second gear; 17. Transparent glass; 18. Soft sleeve; 19. Marking. Specific implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-4 , an electric furnace transformer, including a transformer main body 1, an upper return oil pipe 2 and a lower return oil pipe 3. A side wall of the transformer main body 1 is fixedly connected with a box body 4, and an upper cavity 5 and a lower cavity 6 are respectively opened in the box body 4. The upper return oil pipe 2 and the lower return oil pipe 3 are respectively communicated with the upper cavity 5 and the lower cavity 6. The upper surface of the box body 4 is threadedly connected with a cover pipe 7, and the lower end of the cover pipe 7 is communicated with a filter screen 8. One end of the filter screen 8 penetrates through the box body 4 and extends into the lower cavity 6, and a plurality of oil inlet grooves 9 are opened on the side wall of the cover pipe 7.

[0023] It can be seen from the above structure that by setting the box body 4, the cover pipe 7 and the filter screen 8 in cooperation, when in use, the oil returned by the upper return oil pipe 2 enters the lower cavity 6 through the upper cavity 5 and the filter screen 8, and then the oil in the lower cavity 6 completes the reflux through the lower return oil pipe 3. When it is necessary to disassemble and clean the filter screen 8, the cover pipe 7 can be directly rotated to remove the filter screen 8. When the filter screen 8 is removed, the upper return oil pipe 2 and the lower return oil pipe 3 will not block, so that the device is convenient to remove the filter screen 8 for cleaning, which is convenient and fast.

[0024] Furthermore, a rotating rod 10 is rotatably connected to the inner wall of the box body 4, and both ends of the rotating rod 10 are respectively located inside the upper cavity 5 and the lower cavity 6. Grooves 11 are opened at both ends of the rotating rod 10, and one end of the upper return oil pipe 2 and the lower return oil pipe 3 respectively extends into the two grooves 11. Through holes 12 are opened on the outer wall of the rotating rod 10 located in the upper cavity 5 and the lower cavity 6 and the upper return oil pipe 2 and the lower return oil pipe 3. A driving connection mechanism is arranged below the filter screen 8; by setting the rotating rod 10 in cooperation with the driving connection mechanism, when the lower cover pipe 7 and the filter screen 8 are rotated, the rotating rod 10 can be driven to rotate through the driving connection mechanism. When the rotating rod 10 rotates a certain angle, the oil cannot pass through the upper return oil pipe 2 and the lower return oil pipe 3, and the oil path is cut off to avoid the disorderly backflow of oil.

[0025] Further, the driving connection mechanism includes a rectangular block 13 fixed to the filter net 8. One end of the rectangular block 13 is slidably connected to a rectangular tube 14. The rectangular tube 14 is rotatably connected to the inner wall of the lower cavity 6. A first gear 15 is fixedly sleeved on the outer wall of the rectangular tube 14. A second gear 16 is fixedly sleeved on the outer wall of the rotating rod 10 located in the lower cavity 6. The second gear 16 meshes with the first gear 15. By setting the rectangular block 13, the rectangular tube 14, the first gear 15 and the second gear 16 to cooperate with each other, when the cover tube 7 is rotated, the rotating cover tube 7 can drive the filter net 8 to rotate. The rotating filter net 8 can drive the rectangular block 13 and the rectangular tube 14 to rotate. The rotating rectangular tube 14 can drive the first gear 15 to rotate. The rotating first gear 15 drives the second gear 16 to rotate. The rotating second gear 16 can drive the rotating rod 10 to rotate. After the rotating rod 10 rotates a certain angle, the oil cannot pass through the upper return oil pipe 2 and the lower return oil pipe 3, and the oil circuit is cut off.

[0026] Further, a chamfer is provided at one end of the rectangular block 13. By providing the rectangular block 13, it is convenient for the rectangular block 13 to be inserted into the rectangular tube 14.

[0027] Further, an observation groove is provided on the outer wall of the box body 4. A transparent glass 17 is fixedly connected to the inner wall of the observation groove. By providing the transparent glass 17, the filter net 8 can be viewed through the transparent glass 17. When the filter net 8 is blocked, it is convenient to remove the filter net 8 for cleaning.

[0028] Further, a soft sleeve 18 is fixedly sleeved on the outer wall of the cover tube 7. By providing the soft sleeve 18, the sealing performance of the cover tube 7 can be improved, and oil leakage of the cover tube 7 can be avoided.

[0029] Further, a groove is provided on the upper surface of the cover tube 7. A mark 19 is fixedly connected to the bottom of the groove. By providing the mark 19, when the through hole 12 on the outer wall of the rotating rod 10 communicates with the through holes 12 on the upper return oil pipe 2 and the lower return oil pipe 3, it can be seen through the direction of the mark 19.

[0030] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0031] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An electric furnace transformer, comprising a transformer main body (1), an upper oil return pipe (2) and a lower oil return pipe (3), characterized in that, One side wall of the transformer body (1) is fixedly connected with a box body (4), and an upper cavity (5) and a lower cavity (6) are respectively formed in the box body (4). The upper oil return pipe (2) and the lower oil return pipe (3) are respectively communicated with the upper cavity (5) and the lower cavity (6). The upper surface of the box body (4) is threadedly connected with a cover pipe (7), and the lower end of the cover pipe (7) is communicated with a filter net (8). One end of the filter net (8) penetrates through the box body (4) and extends to the inside of the lower cavity (6). A plurality of oil inlet grooves (9) are formed in the side wall of the cover pipe (7).

2. The electric furnace transformer according to claim 1, characterized in that, A rotating rod (10) is rotatably connected to the inner wall of the box body (4), and both ends of the rotating rod (10) are located inside the upper cavity (5) and the lower cavity (6) respectively. Grooves (11) are formed at both ends of the rotating rod (10). One ends of the upper oil return pipe (2) and the lower oil return pipe (3) respectively extend into the two grooves (11). Through holes (12) are formed in the outer walls of the rotating rod (10) located in the upper cavity (5) and the lower cavity (6) and the upper oil return pipe (2) and the lower oil return pipe (3). A driving connection mechanism is arranged below the filter net (8).

3. The electric furnace transformer according to claim 2, characterized in that, The driving connection mechanism includes a rectangular block (13) fixed to the filter net (8). One end of the rectangular block (13) is slidably connected with a rectangular pipe (14). The rectangular pipe (14) is rotatably connected to the inner wall of the lower cavity (6). A first gear (15) is fixedly sleeved on the outer wall of the rectangular pipe (14). A second gear (16) is fixedly sleeved on the outer wall of the rotating rod (10) located in the lower cavity (6), and the second gear (16) is meshed with the first gear (15).

4. An electric furnace transformer according to claim 3, characterized in that, One end of the rectangular block (13) is provided with a chamfer.

5. An electric furnace transformer according to claim 1, characterized in that, An observation groove is formed in the outer wall of the box body (4), and a transparent glass (17) is fixedly connected to the inner wall of the observation groove.

6. A kind of electric furnace transformer according to claim 1, characterized in that, A soft sleeve (18) is fixedly sleeved on the outer wall of the cover pipe (7).

7. An electric furnace transformer according to claim 1, characterized in that, A groove body is formed on the upper surface of the cover pipe (7), and a mark (19) is fixedly connected to the bottom of the groove body.

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