Anti-vibration and explosion-proof oil-immersed transformer

Abstract

The application discloses an anti-seismic and anti-explosion oil-immersed transformer, which comprises an oil tank, a top base, a transformer body, a low-voltage coil and a high-voltage coil, three groups of core columns on the transformer body are all sleeved with insulating paper tubes outside, and the low-voltage coil and the high-voltage coil are sequentially arranged outside the insulating paper tubes. The transformer body is installed on the bracket which can slide up and down, so that the transformer body is modularized and convenient to install and disassemble. Two groups of anti-seismic components are arranged at the bottom of the sliding seat on the two sides of the bracket to play the role of anti-seismic buffering, so that the purpose of protecting the transformer body is achieved. When the transformer body generates vibration or is subjected to external force during work, the sliding seat will slide on the guide base, the buffer effect is achieved through reciprocating extrusion and stretching of the top block and the damping spring at the bottom side of the sliding seat, and the guide column is used for assisting the sliding seat to move up and down.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, and in particular to a shock-resistant and explosion-proof oil-immersed transformer. Background Technology

[0002] A transformer is a device that uses the principle of electromagnetic induction to change alternating current voltage. Its main components are a primary coil, a secondary coil, and an iron core (magnetic core). In electrical equipment and wireless circuits, it is commonly used for voltage step-up / step-down, impedance matching, and safety isolation. In generators, whether the coil moves in a magnetic field or the magnetic field passes through a fixed coil, an electromotive force is induced in the coil. In both cases, the magnetic flux itself remains constant, but the magnetic flux linked to the coil changes; this is the principle of mutual induction. A transformer is a device that uses electromagnetic mutual induction to transform voltage, current, and impedance. Oil-immersed transformers use an integral oil-immersed process for their winding insulation.

[0003] In existing oil-immersed transformers, the coils are tightly wound between layers, resulting in poor insulation oil circulation due to the small space. This leads to poor overall heat dissipation, safety hazards after prolonged operation at excessively high temperatures, lack of explosion-proof function, and vibration generated during operation. Rigid connections can damage the transformer over time, reducing its overall fatigue strength and shortening its lifespan. Summary of the Invention

[0004] The purpose of this invention is to solve the above-mentioned problems by proposing a shock-resistant and explosion-proof oil-immersed transformer.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An anti-vibration and explosion-proof oil-immersed transformer includes an oil tank, a top mount, a transformer body, a low-voltage coil, and a high-voltage coil. Insulating paper tubes are fitted around the outer sides of three sets of core columns on the transformer body. The low-voltage coil and the high-voltage coil are sequentially arranged on the outer sides of the insulating paper tubes. Clamping plates are bolted to the outer walls of both sides of the transformer body. A first fixing plate is provided on the top of the clamping plates located on both sides of the top of the transformer body. The first fixing plate is bolted to the bottom of a support. The support is slidably disposed in a buffer groove provided inside the top mount. The top mount is fixedly installed on the top of the oil tank. Two sets of anti-vibration components are symmetrically arranged on the inner walls of both sides of the oil tank.

[0006] Preferably, the anti-vibration component includes a slide, a guide seat, a guide post, and a damping spring. The slide is symmetrically arranged on the outer walls of both sides of the bracket, and the slide is slidably disposed on the outer end of the guide post. The guide post is fixedly connected to the inner wall of the guide seat. The guide seat is U-shaped and is welded to both sides of the inner wall of the oil tank. The bottom end of the damping spring is fixedly installed at the center of the bottom end of the inner wall of the guide seat, and a top block is installed on the top end of the damping spring. Both the top block and the damping spring are sleeved on the outer end of the guide post.

[0007] Preferably, the outer wall of the insulating paper tube is provided with several sets of wire harness frames at equal intervals, the bottom of the wire harness frames is uniformly provided with several sets of inserts, and the top of the wire harness frames is uniformly provided with several sets of limiting grooves that engage with the inserts. The outer wall of the wire harness frames is provided with several sets of support blocks at equal intervals, and a base is provided at the bottom of the several sets of wire harness frames. The base is fixedly installed on the clamping plate by a third fixing bolt, and the outer wall and top of the base are provided with support blocks and limiting grooves consistent with the wire harness frames. The outer side of the several sets of wire harness frames is provided with an insulating cylinder, the outer wall of the insulating cylinder is provided with several sets of guide strips at equal intervals, the guide strips are provided with several sets of grooves at equal intervals, the inner wall of the insulating cylinder is provided with several sets of slots at equal intervals, and the support blocks are engaged in the slots.

[0008] Preferably, two sets of heat dissipation grooves are symmetrically opened on the outer walls of both sides of the oil tank, and a sealing groove is provided on the outer wall of the oil tank outside the heat dissipation groove. Two rows of evenly arranged heat dissipation holes are opened on the outer walls of both sides of the oil tank on the top side of the sealing groove, and heat dissipation components are provided on both sides of the heat dissipation groove.

[0009] Preferably, the heat dissipation assembly includes a heat dissipation base, a sealing ring, a heat dissipation plate, and a second fixing bolt. The sealing ring is installed in a sealing groove, the heat dissipation base is fitted to one side of the sealing ring, and the four corners of the heat dissipation base are fixedly connected to the outside of the heat dissipation groove by the second fixing bolt. Several sets of heat dissipation plates are provided, and several sets of heat dissipation plates are installed at equal intervals on the outer walls of both sides of the heat dissipation base.

[0010] Preferably, two sets of slots are symmetrically arranged on the outer walls of both sides of the oil tank, and a heat sink is inserted into one side of the slot. Two sets of second fixing seats are symmetrically connected to the outer walls of both sides of the heat sink. The second fixing seats are fixedly connected to the outer wall of the oil tank by first fixing bolts. Several sets of through holes are evenly arranged on the top outer wall of the heat sink, and a base is installed in the center of the heat sink. A flow guiding component is provided on the base.

[0011] Preferably, the flow guiding assembly includes a motor and a fan blade, the motor is fixedly installed on the inner wall of the base, and the output shaft of the motor is fixedly connected to the center of the fan blade.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By mounting the transformer body on a sliding bracket, the transformer body is modularized for easy installation and disassembly. Two sets of anti-vibration components are set at the bottom of the slide on both sides of the bracket to play a role in shock absorption, thereby protecting the transformer body. When the transformer body vibrates or is subjected to external force during operation, the slide will slide on the guide seat. The reciprocating compression and stretching of the top block and shock-absorbing spring on its bottom side achieves the buffering effect. The guide column is used to assist the slide in moving up and down. 2. By using several sets of interlocking wire harness frames, the number of wire harness frames can be adjusted according to the core column of different heights, thus flexibly adapting to core columns of different heights and specifications. The support blocks on the outer wall of the wire harness frame can separate the outer wound low-voltage coil layer to form an oil channel, and the plug at the bottom of the wire harness frame can separate the outer wound low-voltage coil from the insulating paper tube to form an oil channel for heat dissipation, which can improve the heat dissipation effect of the low-voltage coil. The guide strips evenly arranged on the outside of the insulating tube are used to support the high-voltage coil, so that a gap is formed between the high-voltage coil and the insulating tube for oil heat dissipation, which can improve the heat dissipation effect of the high-voltage coil. The grooves on the guide strips are used to assist the winding of the high-voltage wire and play a supporting and positioning role. The modular plug-in design between the slots on the inner wall of the insulating tube and the support blocks on the outside of several sets of wire harness frames facilitates the initial installation and subsequent maintenance. 3. The heat dissipation plate and heat dissipation base located inside the oil tank are inserted into the insulating oil to absorb heat. The absorbed heat is transferred to the heat dissipation plate on the outside of the oil tank. The heat dissipation plate and heat dissipation base are made of die-cast aluminum. The high thermal conductivity and heat dissipation properties of aluminum are used to achieve the purpose of heat dissipation of the insulating oil. By installing heat dissipation boxes on both sides of the oil tank, the heat dissipation holes can be avoided from being directly exposed. The flow guiding components installed on the heat dissipation boxes can accelerate the dissipation of heat inside and improve the heat dissipation effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the exploded structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 This is an exploded view of part of the structure of the present invention; Figure 4 This is an enlarged schematic diagram of a partial structure of the present invention; Figure 5 This is a cross-sectional structural diagram of the present invention.

[0014] In the diagram: 1. Oil tank; 2. Sealing groove; 3. Slot; 4. Heat sink; 5. Top seat; 6. Bracket; 7. First fixing plate; 8. Slide seat; 9. Second fixing seat; 10. First fixing bolt; 11. Base; 12. Motor; 13. Transformer body; 14. Guide seat; 15. Guide column; 16. Shock-absorbing spring; 17. Heat sink; 18. Sealing ring; 19. Heat sink plate; 20. Second fixing bolt; 21. Insulating paper tube; 22. Low-voltage coil; 23. Insulating tube; 24. High-voltage coil; 25. Guide bar; 26. Slot; 27. Wire harness frame; 28. Support block; 29. ​​Insert block; 30. Limiting groove; 31. Base; 32. Third fixing bolt; 33. Fan blade; 34. Clamping plate. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0016] Please see Figures 1-5 An embodiment of the present invention provides a shock-resistant and explosion-proof oil-immersed transformer, comprising an oil tank 1, a top mount 5, a transformer body 13, a low-voltage coil 22, and a high-voltage coil 24. Insulating paper tubes 21 are fitted around the outer sides of the three sets of core columns on the transformer body 13. The low-voltage coil 22 and the high-voltage coil 24 are sequentially arranged on the outer sides of the insulating paper tubes 21. Clamping plates 34 are bolted to the outer walls on both sides of the transformer body 13. A first fixing plate 7 is provided on the top of the clamping plates 34 located on both sides of the top of the transformer body 13. The first fixing plate 7 is bolted to the bottom of a bracket 6. The bracket 6 is slidably disposed in a buffer groove provided inside the top mount 5. The top mount 5 is fixedly installed on the top of the oil tank 1. Two sets of shock-resistant components are symmetrically arranged on the inner walls on both sides of the oil tank 1. By installing the transformer body 13 on the vertically sliding bracket 6, the transformer body 13 is modularized for easy installation and disassembly. The two sets of shock-resistant components at the bottom of the sliding seats 8 on both sides of the bracket 6 serve as shock-resistant buffers, thereby protecting the transformer body 13.

[0017] Specifically, the anti-vibration component includes a slide block 8, a guide seat 14, a guide post 15, and a damping spring 16. The slide block 8 is symmetrically arranged on the outer walls of both sides of the bracket 6, and the slide block 8 is slidably arranged on the guide post 15 and located at the outer end of the guide post 15. The guide post 15 is fixedly connected to the inner wall of the guide seat 14. The guide seat 14 is U-shaped with the opening facing upward and is welded to both sides of the inner wall of the oil tank 1. The bottom end of the damping spring 16 is fixedly installed at the center of the bottom end of the inner wall of the guide seat 14, and a top block is installed at the top of the damping spring 16. The top block and the damping spring 16 are both sleeved on the outer end of the guide post 15. When the transformer body 13 vibrates or is subjected to external force during operation, the slide block 8 will slide on the guide seat 14. The top block and the damping spring 16 on its bottom side reciprocate to squeeze and stretch to achieve a buffering effect. The guide post 15 is used to assist the slide block 8 in moving up and down.

[0018] Specifically, several sets of wire harness frames 27 are equidistantly fitted on the outer wall of the insulating paper tube 21. Several sets of insert blocks 29 are evenly installed at the bottom of the wire harness frame 27, and several sets of limiting grooves 30 that engage with the insert blocks 29 are evenly opened on the top of the wire harness frame 27. Several sets of support blocks 28 are equidistantly fitted on the outer wall of the wire harness frame 27. A base 31 is provided at the bottom of the several sets of wire harness frames 27. The base 31 is fixedly installed on the clamping plate 34 by a third fixing bolt 32. The outer wall and top of the base 31 are provided with support blocks 28 and limiting grooves 30 consistent with those of the wire harness frame 27. An insulating tube 23 is fitted on the outer side of the several sets of wire harness frames 27. Several sets of guide strips 25 are equidistantly fitted on the outer wall of the insulating tube 23. Several sets of grooves are equidistantly fitted on the guide strips 25. Several sets of slots 26 are equidistantly fitted on the inner wall of the insulating tube 23. The support blocks 28 are engaged in the slots 26. The insulating tube 23 and the insulating paper tube 21 are used to separate the low-voltage coil 22 and the high-voltage coil 23. 4. The number of wire harness frames 27 can be adjusted according to the different heights of the core columns through several sets of interlocking wire harness frames 27, thus flexibly adapting to core columns of different height specifications. The support blocks 28 on the outer wall of the wire harness frame 27 can separate the outer winding low-voltage coil 22 layers to form oil channels, thereby improving the coil heat dissipation effect. The insertion blocks 29 at the bottom of the wire harness frame 27 can also separate the outer winding low-voltage coil 22 from the insulating paper tube 21 to form oil channels for heat dissipation. The guide strips 25 evenly arranged on the outer side of the insulating tube 23 are used to support the high-voltage coil 24, so that a gap is formed between the high-voltage coil 24 and the insulating tube 23 for oil heat dissipation. The grooves on the guide strips 25 are used to assist the winding of the high-voltage wire and play a supporting and positioning role. The modular plug-in design between the slots 26 on the inner wall of the insulating tube 23 and the support blocks 28 on the outer side of several sets of wire harness frames 27 facilitates the initial installation and subsequent maintenance.

[0019] Specifically, two sets of heat dissipation grooves are symmetrically opened on the outer walls of both sides of the oil tank 1, and a sealing groove 2 is provided on the outer wall of the oil tank 1 outside the heat dissipation groove. Two rows of evenly arranged heat dissipation holes are opened on the outer walls of both sides of the oil tank 1 on the top side of the sealing groove 2. Heat dissipation components are provided on both sides of the heat dissipation groove. The heat dissipation holes on both sides of the oil tank 1 facilitate the timely discharge of internal heat, and absorb the heat of the insulating oil in the oil tank 1 through the heat dissipation components to avoid excessive temperature, which could cause the transformer body 13 to overheat and explode.

[0020] Specifically, the heat dissipation assembly includes a heat sink 17, a sealing ring 18, a heat dissipation plate 19, and a second fixing bolt 20. The sealing ring 18 is installed in the sealing groove 2. The heat sink 17 is fitted to one side of the sealing ring 18, and the four corners of the heat sink 17 are fixedly connected to the outside of the heat dissipation groove by the second fixing bolt 20. Specifically, the heat sink 17 is fixedly connected to the outer wall of the oil tank by the second fixing bolt 20 and covers the heat dissipation groove.

[0021] Several sets of heat dissipation plates 19 are provided, and these sets of heat dissipation plates 19 are equidistantly installed on both outer walls of the heat dissipation base 17. Specifically, the heat dissipation base 17 is embedded in the heat dissipation groove, with its inner side extending into the oil tank 1 and its outer side located outside the oil tank. The heat dissipation plates 19 include multiple sets, which are respectively installed on the inner and outer walls of the heat dissipation base 17. Pressing a sealing ring 18 between the heat dissipation base 17 and the oil tank 1 can prevent the insulating oil from leaking out. Both the heat dissipation plates 19 and the heat dissipation base 17 are made of die-cast aluminum. The heat dissipation plates 19 and the heat dissipation base 17 located inside the oil tank 1 are inserted into the insulating oil to absorb heat. The absorbed heat is transferred to the heat dissipation plates 19 outside the oil tank 1. The high thermal conductivity and heat dissipation properties of aluminum are used to achieve the purpose of heat dissipation of the insulating oil.

[0022] Specifically, two sets of slots 3 are symmetrically arranged on the outer walls of both sides of the fuel tank 1. A heat sink 4 is inserted into one side of the slot 3. Two sets of second fixing seats 9 are symmetrically connected to the outer walls of both sides of the heat sink 4. The second fixing seats 9 are fixedly connected to the outer wall of the fuel tank 1 by the first fixing bolts 10. Several sets of through holes are evenly arranged on the top outer wall of the heat sink 4. A base 11 is installed in the center of the heat sink 4. A flow guiding component is provided on the base 11. By installing the heat sink 4 on both sides of the fuel tank 1, the heat dissipation holes can be avoided from being directly exposed. The flow guiding component installed on the heat sink 4 can accelerate the dissipation of heat inside and improve the heat dissipation effect.

[0023] Specifically, the airflow guiding component includes a motor 12 and a fan blade 33. The motor 12 is fixedly installed on the inner wall of the base 11, and the output shaft of the motor 12 is fixedly connected to the center of the fan blade 33. When the airflow guiding component is working, the rotation of the motor 12 drives the fan blade 33 to rotate, which accelerates the outflow of heat from the inside. The two sets of fan blades 33 blow air towards each other at the same time, forming convection, thereby increasing the speed at which heat flows out from the heat dissipation holes and through holes.

[0024] Working Principle: By mounting the transformer body 13 on a sliding bracket 6, the transformer body 13 is modularized for easy installation and disassembly. Two sets of anti-vibration components are installed at the bottom of the slide blocks 8 on both sides of the bracket 6 to provide shock absorption and protect the transformer body 13. When the transformer body 13 vibrates or is subjected to external force during operation, the slide block 8 slides on the guide seat 14. The reciprocating compression and stretching of the top block and the shock-absorbing spring 16 on its bottom side achieve a buffering effect. The guide post 15 assists the slide block 8 in moving up and down. Several sets of interlocking wire harness frames 27 can be used to adjust the number of wire harness frames 27 according to the different heights of the core columns, thus flexibly adapting to core columns of different heights. The support block 28 on the outer wall of the wire harness frame 27 can separate the outer winding low-voltage coil 22 layers to form oil channels, thereby improving the heat dissipation of the coil oil. The insertion block 29 at the bottom of the wire harness frame 27 can also separate the outer winding low-voltage coil 22 from the insulating paper tube 21. The oil channel is used for heat dissipation. The guide strips 25 evenly arranged on the outside of the insulating cylinder 23 are used to support the high-voltage coil 24, so that a gap is formed between the high-voltage coil 24 and the insulating cylinder 23 for oil heat dissipation. The grooves on the guide strips 25 are used to assist the winding of the high-voltage wire and play a supporting and positioning role. The modular plug-in design between the slot 26 on the inner wall of the insulating cylinder 23 and the support blocks 28 on the outside of several sets of wire harness frames 27 is convenient for early installation and later maintenance. The sealing ring 18 is pressed between the heat sink 17 and the oil tank 1 to prevent the insulating oil from leaking out. The heat sink 19 and the heat sink 17 are both die-cast aluminum. The heat sink 19 and the heat sink 17 located inside the oil tank 1 are inserted into the insulating oil to absorb heat. The absorbed heat is transferred to the heat sink 19 on the outside of the oil tank 1. The high thermal conductivity and heat dissipation of aluminum are used to achieve the purpose of heat dissipation of the insulating oil. By installing heat sink boxes 4 on both sides of the oil tank 1, the heat dissipation holes are not directly exposed. The flow guiding components installed on the heat sink box 4 can accelerate the dissipation of heat inside and improve the heat dissipation effect.

[0025] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A shock-resistant and explosion-proof oil-immersed transformer, comprising an oil tank (1), a top mount (5), a transformer body (13), a low-voltage coil (22), and a high-voltage coil (24), characterized in that, The three sets of core columns on the transformer body (13) are all fitted with insulating paper tubes (21) on the outside. The low-voltage coil (22) and the high-voltage coil (24) are arranged on the outside of the insulating paper tubes (21) in sequence. The outer walls on both sides of the transformer body (13) are bolted with clamps (34). The top of the clamps (34) located on both sides of the top of the transformer body (13) is provided with a first fixing plate (7). The first fixing plate (7) is bolted to the bottom of the bracket (6). The bracket (6) is slidably arranged in the buffer groove provided inside the top seat (5). The top seat (5) is fixedly installed on the top of the oil tank (1). Two sets of anti-vibration components are symmetrically arranged on the inner walls on both sides of the oil tank (1).

2. The shock-resistant and explosion-proof oil-immersed transformer according to claim 1, characterized in that, The anti-vibration component includes a slide (8), a guide seat (14), a guide post (15), and a shock-absorbing spring (16). The slide (8) is symmetrically arranged on both sides of the outer wall of the bracket (6), and the slide (8) is slidably arranged on the outer end of the guide post (15). The guide post (15) is fixedly connected to the inner side wall of the guide seat (14). The guide seat (14) is U-shaped and is welded to both sides of the inner wall of the oil tank (1). The bottom end of the shock-absorbing spring (16) is fixedly installed at the center of the bottom end of the inner side wall of the guide seat (14), and a top block is installed on the top end of the shock-absorbing spring (16). The top block and the shock-absorbing spring (16) are both sleeved on the outer end of the guide post (15).

3. The shock-resistant and explosion-proof oil-immersed transformer according to claim 1, characterized in that, The outer wall of the insulating paper tube (21) is provided with several sets of wire harness frames (27) at equal intervals. Several sets of plugs (29) are evenly installed at the bottom of the wire harness frame (27), and several sets of limiting grooves (30) that engage with the plugs (29) are evenly opened at the top of the wire harness frame (27). Several sets of support blocks (28) are evenly provided on the outer wall of the wire harness frame (27). A base (31) is provided at the bottom of the several sets of wire harness frames (27), and the base (31) is fixed by a third fixing bolt (32). Installed on the clamp plate (34), and the outer wall and top of the base (31) are provided with support blocks (28) and limiting grooves (30) consistent with the wire harness frame (27). Several sets of wire harness frames (27) are fitted with insulating cylinders (23) on the outside. Several sets of guide strips (25) are equidistantly arranged on the outer wall of the insulating cylinder (23). Several sets of grooves are equidistantly arranged on the guide strips (25). Several sets of slots (26) are equidistantly arranged on the inner wall of the insulating cylinder (23). The support block (28) is locked in the slot (26).

4. The shock-resistant and explosion-proof oil-immersed transformer according to claim 1, characterized in that, The oil tank (1) has two sets of heat dissipation grooves symmetrically opened on both sides of the outer wall, and the outer wall of the oil tank (1) outside the heat dissipation groove is provided with a sealing groove (2). The outer walls of the oil tank (1) on both sides of the top side of the sealing groove (2) are provided with two rows of evenly arranged heat dissipation holes, and heat dissipation components are provided on both sides of the heat dissipation groove.

5. The shock-resistant and explosion-proof oil-immersed transformer according to claim 4, characterized in that, The heat dissipation assembly includes a heat sink (17), a sealing ring (18), a heat sink plate (19), and a second fixing bolt (20). The sealing ring (18) is installed in the sealing groove (2). The heat sink (17) is fitted to one side of the sealing ring (18), and the four corners of the heat sink (17) are fixedly connected to the outside of the heat dissipation groove by the second fixing bolt (20). Several sets of heat sink plates (19) are provided, and several sets of heat sink plates (19) are installed at equal intervals on both sides of the outer wall of the heat sink (17).

6. The shock-resistant and explosion-proof oil-immersed transformer according to claim 1, characterized in that, Two sets of slots (3) are symmetrically arranged on the outer walls of both sides of the oil tank (1). A heat sink (4) is inserted into one side of the slot (3). Two sets of second fixing seats (9) are symmetrically connected to the outer walls of both sides of the heat sink (4). The second fixing seats (9) are fixedly connected to the outer wall of the oil tank (1) by the first fixing bolt (10). Several sets of through holes are evenly arranged on the top outer wall of the heat sink (4). A base (11) is installed in the center of the heat sink (4). A flow guiding component is provided on the base (11).

7. The shock-resistant and explosion-proof oil-immersed transformer according to claim 6, characterized in that, The flow guiding assembly includes a motor (12) and a fan blade (33). The motor (12) is fixedly installed on the inner wall of the base (11), and the output shaft of the motor (12) is fixedly connected to the center of the fan blade (33).

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