A transformer with cooling structure

Abstract

This utility model belongs to the field of transformer technology, specifically disclosing a transformer with a cooling structure, including a shell and a frame. The frame is longitudinally installed inside the shell, and three-phase windings are fixed between the upper and lower sections inside the frame. An oil tank is installed at the upper right corner of the shell surface, and an oil level gauge is fixed at the lower right corner inside the oil tank. A pipe is fixed between the oil tank and the shell. This transformer with a cooling structure uses coils fixed to the surface of the shell. Under the control of the oil level gauge and oil flow relay, oil is introduced into the shell from the oil tank. After the oil soaks the three-phase windings, other components are connected, and the transformer can operate. Under the suction of the oil pump, oil is drawn from the slot into the outer coil. A fan, protected by a mesh screen, cools the oil passing through the left front of the coil before circulating it back into the shell, thus solving the problem of insufficient cooling effect.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, specifically to a transformer with a cooling structure. Background Technology

[0002] A transformer is a device that adjusts AC voltage. It contains coils, iron cores, leads, etc. It uses the principle of electromagnetic induction to change the voltage. In order to balance the internal pressure of the device, it needs to be soaked in oil, which also serves the functions of insulation, corrosion prevention, and heat dissipation.

[0003] To reduce the operating temperature of transformers, heat sinks need to be installed to prevent malfunctions caused by excessive internal temperature. However, the oil inside such equipment tends to heat up along with the mechanism when immersed for a long time, making it impossible to cool the oil inside.

[0004] Now, a novel transformer with a cooling structure is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a transformer with a cooling structure to solve the problem of poor cooling effect mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A transformer with a cooling structure includes a shell and a frame. The frame is installed longitudinally inside the shell, and a three-phase winding is fixed between the upper and lower parts inside the frame. An oil tank is installed at the upper right corner of the shell surface, and an oil level gauge is fixed at the lower right corner inside the oil tank. A pipe is fixed between the oil tank and the shell, and an oil flow relay is fixed at the bottom of the pipe. A coil is fixed on the surface of the shell, and an oil pump is installed at the lower left corner of the coil. A slot is provided at the lower right corner of the rear of the shell. A vertical plate is installed on the left side of the shell surface, and a fan is fixed at the center inside the vertical plate. A mesh is fixed at the front inside the vertical plate. A valve is installed at the lower right corner of the shell.

[0007] As a further technical solution of this utility model, the fan is located at the left front of the coil, and the mesh is located at the front end of the fan.

[0008] As a further technical solution of this utility model, the rear of the slot is connected to the coil, and the lower part of the pipe is connected to the outer shell.

[0009] As a further technical solution of this utility model, three sets of low-voltage output terminals are installed at the front end between the top of the frame and the outer shell, and three sets of high-voltage output terminals are installed at the rear end between the top of the frame and the outer shell. Connecting pieces are welded to the top of the low-voltage output terminals and the high-voltage output terminals, and holes are provided inside the connecting pieces. A wire harness is wound in the holes. A retaining sleeve is hinged to the upper right corner of the front end of the connecting piece, and a rubber block is fixed inside the retaining sleeve. Screw holes are provided on the left side of the retaining sleeve and the upper left corner of the connecting piece, and screws are threaded between the screw holes.

[0010] As a further technical solution of this utility model, the sleeve rotates left and right at the upper right corner of the front end of the connecting piece, and the rubber block is snapped onto the outside of the wire harness.

[0011] As a further technical solution of this utility model, I-shaped feet are welded to both sides below the surface of the outer shell, and a sponge pad is fixed between the bottom of the I-shaped feet. A base plate is fixed below the sponge pad. A locking block is fixed through the sponge pad on both sides of the top of the base plate. A sliding groove is provided on the side inside the locking block. A pressure block is movably connected in the sliding groove. A bolt is movably connected above the pressure block. A screw hole is provided inside the top of the locking block.

[0012] As a further technical solution of this utility model, the bolt is embedded in the screw hole, and the side of the pressure block is embedded in the groove.

[0013] As a further technical solution of this utility model, the pressure block moves vertically up and down with the bolt, and the inner wall of the screw hole matches the bolt.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the transformer with cooling structure not only realizes the cyclic reduction of oil temperature and the reinforcement of connection harness, but also realizes the addition of a shock-absorbing base;

[0015] (1) By fixing a coil on the surface of the outer shell, the oil is introduced into the outer shell from the oil tank under the control of the oil level gauge and the oil flow relay. After the oil soaks the three-phase winding, other components are connected and the transformer can work. Under the action of the oil pump, the oil is sucked into the outer coil from the slot. The fan, under the protection of the screen, performs air cooling on the oil passing through the left front of the coil, and then circulates back into the outer shell, which can continuously reduce the temperature inside the outer shell.

[0016] (2) By winding the wire harness in the hole, whether it is the high voltage output end or the low voltage output end, the wire harness is fixed in the hole of the connecting piece at the top. After installation, rotate the hinged sleeve again so that the rubber block is locked on the outside of the wire harness. After aligning with the screw hole two, screw in the screw to reinforce it. This can prevent the wire harness from being removed from its original position due to external force. Moreover, the sleeve and screw hole two are both plastic products and are not easy to conduct electricity.

[0017] (3) By welding I-shaped feet on both sides below the surface of the outer shell, the I-shaped feet are pushed from back to front to between the clamps under the restriction of the clamps on both sides. Then, the bolts installed in the screw hole are rotated and the pressure block is raised and lowered vertically along the side groove to press and fix the I-shaped feet below, so that the I-shaped feet contact the sponge pad, reducing the vibration transmitted to the base plate and ground when the transformer is working. Disassembly and installation are also very convenient. Attached Figure Description

[0018] Figure 1 This is a frontal cross-sectional view of the present invention.

[0019] Figure 2 For the present utility model Figure 1 Enlarged cross-sectional view of point A in the middle section;

[0020] Figure 3 This is a front view structural diagram of the I-beam support of this utility model;

[0021] Figure 4 For the present utility model Figure 3 Enlarged cross-sectional view of section B in the middle.

[0022] In the diagram: 1. Outer shell; 2. Frame; 3. Three-phase winding; 4. Pipeline; 5. Valve; 6. Slot; 7. Base plate; 8. Sponge pad; 9. Coil; 10. Clamping block; 11. I-beam foot; 12. Vertical plate; 13. Oil pump; 14. Fan; 15. Mesh screen; 16. High-voltage output terminal; 17. Low-voltage output terminal; 18. Connecting piece; 19. Oil tank; 20. Oil level gauge; 21. Oil flow relay; 22. Bolt; 23. Screw hole one; 24. Pressure block; 25. Slide groove; 26. Hole; 27. Wiring harness; 28. Compression sleeve; 29. ​​Rubber block; 30. Screw; 31. Screw hole two. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4An embodiment of this utility model is provided: a transformer with a cooling structure, including a shell 1 and a frame 2. The frame 2 is installed longitudinally inside the shell 1, and a three-phase winding 3 is fixed between the upper and lower parts inside the frame 2. An oil tank 19 is installed on the upper right corner of the surface of the shell 1, and an oil level gauge 20 is fixed on the lower right corner inside the oil tank 19. A pipe 4 is fixed between the oil tank 19 and the shell 1, and an oil flow relay 21 is fixed at the bottom of the pipe 4. A coil 9 is fixed on the surface of the shell 1, and an oil pump 13 is installed on the lower left corner of the coil 9. A slot 6 is provided at the lower right corner of the rear of the shell 1. A vertical plate 12 is installed on the left side of the surface of the shell 1, and a fan 14 is fixed at the center inside the vertical plate 12. A mesh 15 is fixed at the front inside the vertical plate 12. A valve 5 is installed on the lower right corner of the shell 1.

[0025] The fan 14 is located in front of the coil 9 on the left, the screen 15 is located at the front of the fan 14, the back of the slot 6 is connected to the coil 9, and the bottom of the pipe 4 is connected to the outer casing 1.

[0026] Specifically, such as Figure 1 As shown, under the control of the oil level gauge 20 and the oil flow relay 21, the oil is introduced into the outer casing 1 from the oil tank 19. After the oil soaks the three-phase winding 3, other components are connected and the transformer can work. Under the pumping action of the oil pump 13, the oil is sucked into the outer coil 9 from the slot 6. The fan 14, under the protection of the screen 15, performs air cooling on the oil passing through the left front of the coil 9, and then circulates it back into the outer casing 1.

[0027] Three sets of low-voltage output terminals 17 are installed at the front end between the top of the frame 2 and the outer shell 1, and three sets of high-voltage output terminals 16 are installed at the rear end between the top of the frame 2 and the outer shell 1. Connecting pieces 18 are welded to the top of the low-voltage output terminals 17 and the high-voltage output terminals 16 respectively. The connecting pieces 18 have holes 26 inside, and wire harnesses 27 are wound around the holes 26. A ferrule 28 is hinged to the upper right corner of the front end of the connecting pieces 18, and a rubber block 29 is fixed inside the ferrule 28. Screw holes 31 are provided on the left side of the ferrule 28 and the upper left corner of the connecting pieces 18, and screws 30 are threaded between the screw holes 31. The ferrule 28 rotates left and right at the upper right corner of the front end of the connecting pieces 18, and the rubber block 29 is snapped onto the outside of the wire harness 27.

[0028] Specifically, such as Figure 1 and Figure 2 As shown, whether it is the high-voltage output terminal 16 or the low-voltage output terminal 17, the wire harness 27 is fixed in the hole 26 of the connecting piece 18 at the top. After installation, rotate the hinged sleeve 28 again so that the rubber block 29 is snapped into the outside of the wire harness 27. After aligning the screw hole 31, screw in the screw 30 for reinforcement, which can prevent the wire harness 27 from being dislodged from its original position by external force.

[0029] I-beam feet 11 are welded to both sides below the surface of the outer shell 1, and a sponge pad 8 is fixed between the bottom of the I-beam feet 11. A base plate 7 is fixed below the sponge pad 8. A locking block 10 is fixed to both sides of the top of the base plate 7 through the sponge pad 8. A sliding groove 25 is provided on the side inside the locking block 10. A pressure block 24 is movably connected in the sliding groove 25. A bolt 22 is movably connected above the pressure block 24. A screw hole 23 is provided inside the top of the locking block 10.

[0030] Bolt 22 is embedded in screw hole 23, and the side of pressure block 24 is embedded in slide groove 25. Pressure block 24 moves vertically up and down with bolt 22, and the inner wall of screw hole 23 matches bolt 22.

[0031] Specifically, such as Figure 1 , Figure 3 and Figure 4 As shown, under the restriction of the two side locking blocks 10, the I-shaped foot 11 is pushed from back to front between the locking blocks 10. Then, the bolts 22 installed in the screw holes 23 are rotated respectively, and the pressure block 24 is raised and lowered vertically along the side slide groove 25 to press and fix the lower I-shaped foot 11, so that the I-shaped foot 11 contacts the sponge pad 8, reducing the vibration transmitted to the base plate 7 and the ground when the transformer is working.

[0032] Working principle: In use, under the restriction of the two side locking blocks 10, the I-shaped support 11 is pushed from back to front between the locking blocks 10. Then, the bolts 22 installed in the screw holes 23 are rotated respectively, and the pressure block 24 is raised and lowered vertically along the side sliding groove 25 to press and fix the lower I-shaped support 11, so that the I-shaped support 11 contacts the sponge pad 8 to achieve the purpose of noise reduction. Whether it is the high voltage output end 16 or the low voltage output end 17, the wire harness 27 is fixed in the hole 26 of the connecting piece 18 at the top. After installation, the hinged sleeve 28 is rotated again to make the rubber The rubber block 29 is attached to the outside of the wire harness 27. After aligning with the screw hole 31, the screw 30 is screwed in for reinforcement, which can prevent the wire harness 27 from being dislodged from its original position due to external force. Under the control of the oil level gauge 20 and the oil flow relay 21, the oil is introduced into the outer shell 1 from the oil tank 19. After the oil soaks the three-phase winding 3, other components are connected and the transformer can work. Under the pumping action of the oil pump 13, the oil is sucked into the outer coil 9 from the slot 6. The fan 14, under the protection of the screen 15, performs air cooling on the oil passing through the left front of the coil 9, and then circulates it back into the outer shell 1.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A transformer with a cooling structure, comprising a casing (1) and a frame (2), characterized in that: A frame (2) is installed longitudinally inside the outer shell (1), and a three-phase winding (3) is fixed between the upper and lower parts inside the frame (2). An oil tank (19) is installed on the upper right corner of the surface of the outer shell (1), and an oil level gauge (20) is fixed on the lower right corner inside the oil tank (19). A pipe (4) is fixed between the oil tank (19) and the outer shell (1), and an oil flow relay (21) is fixed at the bottom of the pipe (4). A coil (9) is fixed on the surface of the outer shell (1), and an oil pump (13) is installed on the lower left corner of the coil (9). A slot (6) is provided on the lower right corner behind the outer shell (1). A vertical plate (12) is installed on the left side of the surface of the outer shell (1), and a fan (14) is fixed at the center inside the vertical plate (12). A mesh (15) is fixed at the front inside the vertical plate (12). A valve (5) is installed on the lower right corner of the outer shell (1).

2. A transformer with a cooling structure according to claim 1, characterized in that: The fan (14) is located in front of the coil (9) on the left, and the mesh (15) is located at the front end of the fan (14).

3. A transformer with a cooling structure according to claim 1, characterized in that: The back of the slot (6) is connected to the coil (9), and the bottom of the pipe (4) is connected to the outer shell (1).

4. A transformer with a cooling structure according to claim 1, characterized in that: Three sets of low-voltage output terminals (17) are installed at the front end between the top of the frame (2) and the outer shell (1), and three sets of high-voltage output terminals (16) are installed at the rear end between the top of the frame (2) and the outer shell (1). Connecting pieces (18) are welded to the top of the low-voltage output terminals (17) and the high-voltage output terminals (16), and holes (26) are provided inside the connecting pieces (18). A wire harness (27) is wound around the holes (26). A sleeve (28) is hinged to the upper right corner of the front end of the connecting pieces (18), and a rubber block (29) is fixed inside the sleeve (28). A screw hole (31) is provided on the left side of the sleeve (28) and the upper left corner of the connecting pieces (18), and a screw (30) is threaded between the screw holes (31).

5. A transformer with a cooling structure according to claim 4, characterized in that: The sleeve (28) rotates left and right at the upper right corner of the front end of the connecting piece (18), and the rubber block (29) is snapped onto the outside of the wire harness (27).

6. A transformer with a cooling structure according to claim 1, characterized in that: I-shaped feet (11) are welded to both sides below the surface of the outer shell (1), and a sponge pad (8) is fixed between the bottom of the I-shaped feet (11). A base plate (7) is fixed below the sponge pad (8). A locking block (10) is fixed to both sides of the top of the base plate (7) through the sponge pad (8). A sliding groove (25) is provided on the side inside the locking block (10). A pressure block (24) is movably connected in the sliding groove (25), and a bolt (22) is movably connected above the pressure block (24). A screw hole (23) is provided inside the top of the locking block (10).

7. A transformer with a cooling structure according to claim 6, characterized in that: The bolt (22) is embedded in the screw hole (23), and the side of the pressure block (24) is embedded in the groove (25).

8. A transformer with a cooling structure according to claim 6, characterized in that: The pressure block (24) moves vertically up and down with the bolt (22), and the inner wall of the screw hole (23) matches the bolt (22).

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