Direct-current electric arc furnace transformer
By combining the transformer oil circulation cooling mechanism and the heat pipe system, the heat dissipation problem of the DC electric arc furnace transformer is solved, achieving efficient heat dissipation and extending its service life.
Patent Information
- Application Number
- CN202422964071.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-02
AI Technical Summary
The existing DC electric arc furnace transformer has poor heat dissipation, resulting in rapid internal temperature rise and affecting its service life.
A heat dissipation scheme combining a transformer oil circulation cooling mechanism and a heat pipe system is adopted. Multiple heat dissipation methods are achieved through components such as a low-temperature circulator, an oil inlet pipe, an oil supply combination pipe, heat pipes, and a cooling fan, including transformer oil circulation cooling, heat pipe auxiliary heat dissipation, and air cooling.
This improves the heat dissipation efficiency of the transformer and extends its service life.
Smart Images
Figure CN223501664U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of transformer technology, specifically a DC electric arc furnace transformer. Background Technology
[0002] A DC arc furnace transformer is a power supply used in various metal and ore smelting, heat treatment, alloy production, and electroslag remelting arc furnaces. The load of the arc furnace transformer changes over time, and the current fluctuates greatly, especially during the melting period. The arc furnace transformer is often under peak load with large inrush current, and the internal temperature of the arc furnace transformer rises rapidly at this time. However, existing arc furnace transformers only rely on internal transformer oil for static heat dissipation, which makes it difficult to quickly dissipate the internal temperature of the transformer oil. This results in poor heat dissipation of the DC arc furnace transformer and affects its service life. Therefore, this application proposes a DC arc furnace transformer. Utility Model Content
[0003] In view of the above situation and to overcome the defects of the prior art, this utility model provides a DC electric arc furnace transformer, which effectively solves the problem of poor heat dissipation of existing DC electric arc furnace transformers.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a DC electric arc furnace transformer, comprising a transformer body, wherein a plurality of heat pipes are inserted through the top end of the transformer body, and a transformer oil circulation cooling mechanism is fixedly installed at one end of the transformer body. The transformer oil circulation cooling mechanism is inserted through and connected to the transformer body and sleeved on the heat pipes. The transformer oil circulation cooling mechanism consists of a low-temperature circulator, an oil inlet pipe, a plurality of oil inlets, and an oil supply combination pipe. The low-temperature circulator is fixedly connected to one end of the transformer body, and the oil inlet pipe is fixedly connected to the low-temperature circulator. The inlet is inserted into the transformer body, and the oil inlet is fixedly connected to the top of the oil inlet pipe. The oil supply combination pipe is connected between the low temperature circulator and the transformer body and is sleeved on the heat pipe. The oil supply combination pipe consists of an L-shaped pipe, several cooling jackets, several short pipes, a branch pipe and several oil outlets. The L-shaped pipe is fixedly connected to the low temperature circulator. The branch pipe is inserted into one end of the top of the transformer body. The cooling jacket and short pipe are alternately connected between the L-shaped pipe and the branch pipe. The cooling jacket is sleeved on the heat pipe and sealed to it. The oil outlets are fixedly connected to both ends of the bottom of the branch pipe.
[0005] Preferably, an oil guide groove one and an oil guide groove two are fixedly provided on the top of both sides inside the transformer body, and the oil guide groove one and the oil guide groove two are respectively located at the bottom of the two oil outlets.
[0006] Preferably, the tops of both the first and second oil guide grooves are open structures, and several through holes are provided on both sides of the first and second oil guide grooves.
[0007] Preferably, the heat pipe consists of a tube body and a liquid-absorbing core. The tube body is inserted into the top of the transformer body and sealed to it. The inside of the tube body is filled with evaporating liquid, and the liquid-absorbing core is fixedly connected to the center position inside the tube body.
[0008] Preferably, a plurality of heat-conducting fins are fixedly provided at the bottom end of the outer surface of the tube, and a plurality of heat-dissipating fins are fixedly provided at the top end of the outer surface of the tube.
[0009] Preferably, a plurality of cooling fans are fixedly installed on one side of the top of the transformer body, and the cooling fans are inclined.
[0010] Preferably, several heat dissipation plates are fixedly installed on both sides of the transformer body, and several cooling fans located at the bottom of the heat dissipation plates are fixedly installed at the bottom of both sides of the transformer body.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] (1) In operation, by setting up a transformer oil circulation cooling mechanism consisting of a low temperature circulator, an oil inlet pipe, several oil inlets and a combined oil supply pipe, the transformer oil can be circulated and cooled to keep the transformer oil at a low temperature. In turn, the transformer oil can efficiently dissipate heat to the transformer body. By setting up a heat pipe consisting of a pipe body and a liquid wick, the transformer oil can be assisted in heat dissipation, further improving the heat dissipation efficiency. At the same time, the transformer oil circulation cooling mechanism can be used to assist in heat dissipation at the condensation end of the heat pipe.
[0013] (2) By setting up cooling fan one, auxiliary heat dissipation can be achieved for the condensing end of the heat pipe. By setting up heat dissipation plate and cooling fan two, air cooling can be achieved for the transformer body. Through multiple heat dissipation effects, the service life of the transformer can be effectively improved. Attached Figure Description
[0014] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.
[0015] In the attached diagram:
[0016] Figure 1 This is a schematic diagram of the structure of the DC electric arc furnace transformer of this utility model;
[0017] Figure 2 This is a schematic diagram of the transformer oil circulation cooling mechanism and heat pipe connection structure of this utility model;
[0018] Figure 3 This is a schematic diagram of the connection structure between the oil supply combination pipe and the heat pipe of this utility model;
[0019] Figure 4 This is a schematic diagram of the heat pipe structure of this utility model;
[0020] In the diagram: 1. Transformer body; 2. Heat pipe; 3. Transformer oil circulation cooling mechanism; 4. Low temperature circulator; 5. Oil inlet pipe; 6. Oil inlet; 7. Oil supply combination pipe; 8. L-shaped pipe; 9. Cooling jacket; 10. Short pipe; 11. Diverter pipe; 12. Oil outlet; 13. Oil guide groove one; 14. Oil guide groove two; 15. Through hole; 16. Pipe body; 17. Liquid suction core; 18. Heat-conducting fins; 19. Heat dissipation fins; 20. Cooling fan one; 21. Heat dissipation plate; 22. Cooling fan two. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0022] Depend on Figures 1 to 3 This invention discloses a DC electric arc furnace transformer, comprising a transformer body 1, with several heat pipes 2 inserted at the top of the transformer body 1, and a transformer oil circulation cooling mechanism 3 fixedly installed at one end of the transformer body 1. The transformer oil circulation cooling mechanism 3 is inserted into the transformer body 1 and sleeved on the heat pipes 2. The transformer oil circulation cooling mechanism 3 consists of a low-temperature circulator 4, an oil inlet pipe 5, several oil inlets 6, and an oil supply combination pipe 7. The low-temperature circulator 4 is fixedly connected to one end of the transformer body 1, and the oil inlet pipes 5 are fixedly connected to the inlet of the low-temperature circulator 4 and inserted into the transformer body 1. Oil port 6 is fixedly connected to the top of oil inlet pipe 5. Oil supply combination pipe 7 is connected between low temperature circulator 4 and transformer body 1 and sleeved on heat pipe 2. Oil supply combination pipe 7 is composed of L-shaped pipe 8, several cooling jackets 9, several short pipes 10, diversion pipe 11 and several oil outlets 12. L-shaped pipe 8 is fixedly connected to low temperature circulator 4. Diversion pipe 11 is inserted and connected to one end of the top of transformer body 1. Cooling jackets 9 and short pipes 10 are alternately connected between L-shaped pipe 8 and diversion pipe 11. Cooling jacket 9 is sleeved on heat pipe 2 and sealed to it. Oil outlet 12 is fixedly connected to both ends of the bottom of diversion pipe 11.
[0023] When in use, if the internal temperature of the transformer body 1 is high, the low temperature circulation machine 4 is started. The transformer oil inside the transformer body 1 is drawn through the oil inlet pipe 5 and the oil inlet port 6. The transformer oil enters the interior of the low temperature circulation machine 4 for cooling, and then is discharged back into the interior of the transformer body 1 through the oil supply combination pipe 7, thereby achieving efficient heat dissipation of the transformer body 1. The L-shaped pipe 8, cooling jacket 9, short pipe 10, diversion pipe 11 and oil outlet 12 can disperse and discharge the transformer oil, and at the same time, can provide auxiliary heat dissipation to the condensation end of the heat pipe 2.
[0024] Depend on Figure 1 and Figure 3 As shown, an oil guide groove 13 and an oil guide groove 2 14 are fixedly installed on the top of both sides inside the transformer body 1. The oil guide groove 13 and the oil guide groove 2 14 are located at the bottom of the two oil outlets 12 respectively. The top of the oil guide groove 13 and the oil guide groove 2 14 are both open structures. Several through holes 15 are opened on both sides of the oil guide groove 13 and the oil guide groove 2 14.
[0025] The cooled transformer oil enters the interior of oil guide groove 13 and oil guide groove 2 14, and is then dispersed and discharged through the oil outlet 12 on the side of oil guide groove 13 and oil guide groove 2 14.
[0026] Depend on Figure 1 and Figure 4 As shown, the heat pipe 2 is composed of a pipe body 16 and a liquid absorber 17. The pipe body 16 is inserted into the top of the transformer body 1 and sealed to it. The inside of the pipe body 16 is filled with evaporating liquid. The liquid absorber 17 is fixedly connected to the center position inside the pipe body 16. Several heat-conducting fins 18 are fixedly provided at the bottom of the outer surface of the pipe body 16, and several heat dissipation fins 19 are fixedly provided at the top of the outer surface of the pipe body 16.
[0027] The evaporating liquid inside heat pipe 2 is heated and evaporates, and the evaporation process absorbs heat. The vapor rises to the top of the tube body 16, where it condenses and dissipates heat. The condensed evaporating liquid flows back through the wick 17. Since the wick 17 is located in the center of the tube body 16, the vapor rises along the inner side of the tube body 16 and can fully contact the inner side of the tube body 16, thereby improving the heat dissipation effect.
[0028] Depend on Figure 1 As shown, a number of cooling fans 20 are fixedly installed on one side of the top of the transformer body 1. The cooling fans 20 are inclined structures. A number of heat dissipation plates 21 are fixedly installed on both sides of the transformer body 1. A number of cooling fans 22 located at the bottom of the heat dissipation plates 21 are fixedly installed at the bottom of both sides of the transformer body 1.
[0029] Cooling fan 20 can provide auxiliary cooling for heat pipe 2, and heat sink 21 and cooling fan 22 can provide auxiliary cooling for transformer body 1.
[0030] In operation, a transformer oil circulation cooling mechanism, consisting of a low-temperature circulator, an oil inlet pipe, several oil inlets, and a combined oil supply pipe, is used to circulate and cool the transformer oil, keeping it at a low temperature. This allows for efficient heat dissipation of the transformer body through the transformer oil. A heat pipe, composed of a tube body and a wicking core, provides auxiliary heat dissipation for the transformer oil, further improving heat dissipation efficiency. The transformer oil circulation cooling mechanism also provides auxiliary heat dissipation to the condenser end of the heat pipe. A cooling fan provides auxiliary heat dissipation to the condenser end of the heat pipe, and a heat sink and a cooling fan provide air cooling for the transformer body. Through these multiple heat dissipation mechanisms, the service life of the transformer is effectively improved.
Claims
1. A DC electric arc furnace transformer, comprising a transformer body (1), characterized in that: Several heat pipes (2) are inserted through the top of the transformer body (1). A transformer oil circulation cooling mechanism (3) is fixedly installed at one end of the transformer body (1). The transformer oil circulation cooling mechanism (3) is inserted through the transformer body (1) and sleeved on the heat pipes (2). The transformer oil circulation cooling mechanism (3) consists of a low-temperature circulator (4), an oil inlet pipe (5), several oil inlets (6), and an oil supply combination pipe (7). The low-temperature circulator (4) is fixedly connected to one end of the transformer body (1). The oil inlet pipe (5) is fixedly connected to the liquid inlet of the low-temperature circulator (4) and inserted through the transformer body (1). The oil inlets (6) are fixedly connected to the top of the oil inlet pipe (5). The oil supply combination pipe (7) is connected between the low temperature circulator (4) and the transformer body (1) and is fitted onto the heat pipe (2). The oil supply combination pipe (7) consists of an L-shaped pipe (8), several cooling jackets (9), several short pipes (10), a shunt pipe (11) and several oil outlets (12). The L-shaped pipe (8) is fixedly connected to the low temperature circulator (4). The shunt pipe (11) is inserted and connected to one end of the top of the transformer body (1). The cooling jackets (9) and short pipes (10) are alternately connected between the L-shaped pipe (8) and the shunt pipe (11). The cooling jacket (9) is fitted onto the heat pipe (2) and sealed to it. The oil outlets (12) are fixedly connected to both ends of the bottom of the shunt pipe (11).
2. The DC arc furnace transformer according to claim 1, characterized in that: Oil guide groove one (13) and oil guide groove two (14) are fixedly installed on the top of both sides inside the transformer body (1). Oil guide groove one (13) and oil guide groove two (14) are located at the bottom of the two oil outlets (12).
3. A DC arc furnace transformer according to claim 2, characterized in that: The top of both the first oil guide groove (13) and the second oil guide groove (14) are open structures, and several through holes (15) are provided on both sides of the first oil guide groove (13) and the second oil guide groove (14).
4. A DC arc furnace transformer according to claim 1, characterized in that: The heat pipe (2) consists of a tube body (16) and a liquid absorber (17). The tube body (16) is inserted into the top of the transformer body (1) and sealed to it. The inside of the tube body (16) is filled with evaporating liquid, and the liquid absorber (17) is fixedly connected to the center of the inside of the tube body (16).
5. A DC arc furnace transformer according to claim 4, characterized in that: A number of heat-conducting fins (18) are fixedly provided at the bottom of the outer surface of the tube (16), and a number of heat dissipation fins (19) are fixedly provided at the top of the outer surface of the tube (16).
6. A DC arc furnace transformer according to claim 1, characterized in that: Several cooling fans (20) are fixedly installed on one side of the top of the transformer body (1), and the cooling fans (20) are inclined.
7. A DC arc furnace transformer according to claim 1, characterized in that: Several heat dissipation plates (21) are fixedly installed on both sides of the transformer body (1), and several cooling fans (22) located at the bottom of the heat dissipation plates (21) are fixedly installed at the bottom of both sides of the transformer body (1).