Energy-saving oil-immersed transformer

Abstract

The utility model relates to the technical field of heat dissipation of oil-immersed transformers, and discloses an energy-saving oil-immersed transformer which comprises a plurality of cooling fins fixedly installed along the outer wall of a transformer body, two liquid conveying pipes symmetrically installed at the upper end and the lower end of the transformer body, and a plurality of liquid conveying pipes fixedly installed along the outer wall of the transformer body, a plurality of guide pipes communicated with inner cavities of the guide pipes are fixedly installed on the sides, close to the cooling fins, of the two liquid conveying pipes. According to the transformer, by starting the oil pump, insulating oil can circularly flow in the two liquid conveying pipes and the multiple cavities through the oil pump, so that continuous heat dissipation of the insulating oil is achieved, the heat dissipation rate of the oil in the transformer body is effectively increased, rapid heat dissipation of the oil in the transformer body to the winding is facilitated, and the service life of the transformer body is prolonged. The problem that the transformer body is damaged due to the fact that the heat dissipation speed of the winding is low is solved, and adverse effects on normal work of the transformer body are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation of oil-immersed transformers, in particular to an energy-saving oil-immersed transformer. Background Art

[0002] The energy-saving oil-immersed power transformer is a special type of transformer. Its structure includes an oil tank, a cover on the upper part of the oil tank, a wiring terminal on the cover, an iron core in the oil tank, and windings on the iron core. Due to the stable operation of the oil-immersed transformer, it is widely used in power systems, industrial and mining enterprises, transportation, posts and telecommunications departments, scientific research units, etc.

[0003] At present, during the operation of the oil-immersed power transformer, the heat of the windings and the iron core is first transferred to the oil. The heat absorbed by the oil is transferred to the heat sink. The heat dissipation fins are in contact with the outside air and dissipate heat through the air, thereby continuously dissipating heat from the oil. The cooled oil can continuously absorb the heat generated by the operation of the coil and the windings, which is beneficial to the continuous and stable operation of the transformer. However, in some areas (such as the southwestern region), the summers are relatively hot, resulting in a slow air flow rate outside the heat dissipation fins and a high air temperature. Therefore, it is impossible to dissipate heat from the heat sink in time through the air flow, resulting in the inability of the oil-immersed transformer to dissipate heat quickly, which is likely to cause damage to the oil-immersed transformer and affect its normal operation. Summary of the Utility Model

[0004] In order to make up for the above deficiencies, the utility model provides an energy-saving oil-immersed transformer, aiming to solve the technical problems existing in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: An energy-saving oil-immersed transformer, comprising:

[0006] A transformer body.

[0007] Heat sinks, a plurality of which are fixedly installed along the outer wall of the transformer body. Chambers for heat dissipation are provided inside the plurality of heat sinks.

[0008] Two infusion pipes, symmetrically installed at the upper and lower ends of the transformer body. A plurality of ducts communicating with their inner cavities are fixedly installed on one side of the two infusion pipes close to the heat sinks. Through holes communicating with the chambers are provided at the upper and lower ends of the plurality of heat sinks. One ends of the multiple ducts outside the two infusion pipes are fixedly connected to the inner walls of the through holes.

[0009] An oil pump, fixedly connected to one side of the transformer body. The water inlet end of the oil pump is fixedly connected to the outer wall of the infusion pipe directly below the transformer body. The water outlet end of the oil pump is fixedly installed with a transmission pipe connected to the infusion pipe directly above the transformer body.

[0010] As a further description of the above technical solution:

[0011] The shape of the infusion tube is the same as the shape of the arrangement of multiple heat sinks.

[0012] As a further description of the above technical solution:

[0013] Both sides of the multiple heat sinks adjacent to the outer wall of the transformer body are bent.

[0014] As a further description of the above technical solution:

[0015] The transmission tube is arranged in a spiral structure.

[0016] As a further description of the above technical solution:

[0017] Both the transmission tube and the infusion tube are made of metal materials.

[0018] As a further description of the above technical solution:

[0019] A filling tube is fixedly installed on the outer wall of the infusion tube directly above the transformer body. A sealing bolt is movably installed at the opening end of the filling tube away from the infusion tube, and a thread groove adapted to the sealing bolt is provided on the inner wall of the filling tube.

[0020] The utility model has the following beneficial effects:

[0021] In the utility model, by starting the oil pump, the insulating oil can be circulated through the oil pump in the two infusion tubes and multiple chambers, so as to realize the continuous heat dissipation of the insulating oil, effectively improve the heat dissipation rate of the oil inside the transformer body, facilitate the rapid heat dissipation of the winding by the oil inside the transformer body, prevent the transformer body from being damaged due to the slow heat dissipation rate of the winding, reduce the adverse impact on the normal operation of the transformer body. At the same time, by increasing the heat dissipation rate of the winding inside the transformer body, the loss generated during the operation of the transformer body can be effectively reduced, that is, when the heat dissipation is faster, the temperature of the winding inside the transformer is relatively lower, and the lower the temperature, the smaller the resistance of the winding coil, thus reducing its own energy loss, so as to achieve the purpose of energy saving during the operation of the transformer body. Description of the Drawings

[0022] Figure 1 is a perspective view of the utility model;

[0023] Figure 2 is an assembly drawing of the infusion tube and the heat sink of the utility model;

[0024] Figure 3 is a cross-sectional view of the heat sink of the utility model;

[0025] Figure 4 is the utility model Figure 2 is an enlarged view of the structure at A in the utility model.

[0026] Legend Explanation:

[0027] 1. Transformer body; 2. Radiator; 3. Transmission pipe; 4. Oil pump; 5. Infusion pipe; 6. Conduit; 7. Sealing bolt; 8. Filling pipe. Specific Embodiment

[0028] 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 of 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 shall fall within the protection scope of the present invention.

[0029] Referring to Figures 1-4 , an embodiment provided by the present invention: an energy-saving oil-immersed transformer, comprising:

[0030] Transformer body 1, which can ensure the stable operation of the power system and is widely used in power plants, substations and industrial and mining enterprises to provide electric energy to load equipment as the main power source to meet the requirements of the operation of large-capacity power systems.

[0031] Radiators 2, a plurality of which are fixedly installed along the outer wall of the transformer body 1. The heat generated by the transformer body 1 is absorbed by the oil, resulting in an increase in the temperature of the internal oil. The oil transfers the temperature to the outer shell of the transformer body 1. After the temperature of the outer shell of the transformer body 1 increases, the heat is transferred to the plurality of radiators 2. Under the flow of external air, the heat absorbed by the plurality of radiators 2 can be taken away, so as to achieve the purpose of simultaneously dissipating heat from the plurality of radiators 2, which is beneficial to continuously dissipating heat from the oil and continuously absorbing the heat generated by the operation of the transformer body 1.

[0032] A plurality of cavities for heat dissipation are provided inside the radiators 2, and insulating oil is filled inside the plurality of radiators 2 through the cavities. When the temperature of the radiators 2 rises above the temperature of the insulating oil, the heat of the radiators 2 itself is transferred to the insulating oil, achieving the purpose of liquid cooling the plurality of radiators 2, which is beneficial to accelerating the heat dissipation rate of the radiators 2.

[0033] Two infusion tubes 5 are symmetrically installed at the upper and lower ends of the transformer body 1. On the side of the two infusion tubes 5 close to the radiator fins 2, a plurality of conduits 6 communicating with their inner cavities are fixedly installed. Through holes communicating with the chambers are provided at both the upper and lower ends of the plurality of radiator fins 2. One end of the plurality of conduits 6 outside the two infusion tubes 5 is fixedly connected to the inner wall of the through holes. The insulating oil inside the chamber flows into the infusion tube 5 at its bottom through the conduit 6 installed at its bottom under the action of gravity. At this time, the insulating oil flowing into the infusion tube 5 transfers heat to the infusion tube 5. When the temperature of the infusion tube 5 is higher than the air flowing through its outer surface, the heat is transferred to the air, thereby continuously dissipating heat from the infusion tube 5, which is beneficial to the continuous heat dissipation of the insulating oil flowing through the inner cavity of the infusion tube 5 by the infusion tube 5.

[0034] An oil pump 4 is fixedly connected to one side of the transformer body 1. The water inlet end of the oil pump 4 is fixedly connected to the outer wall of the infusion tube 5 directly below the transformer body 1. The water outlet end of the oil pump 4 is fixedly installed with a transmission pipe 3 connected to the infusion tube 5 directly above the transformer body 1. When the oil pump 4 is started, at this time, the insulating oil inside the infusion tube 5 directly below the transformer body 1 enters the inside of the transmission pipe 3 through the water inlet end of the oil pump 4, and then enters the inside of the other infusion tube 5 through the transmission pipe 3. The insulating oil inside the infusion tube 5 directly above the transformer body 1 flows into the plurality of chambers again through the plurality of conduits 6 under the action of gravity, which is beneficial to the continuous circulation of the insulating oil through the oil pump 4 inside the two infusion tubes 5 and the plurality of chambers, thereby realizing the continuous heat dissipation of the insulating oil, effectively improving the heat dissipation rate of the oil inside the transformer body 1, being beneficial to the rapid heat dissipation of the oil inside the transformer body 1 to the windings, preventing the problem that the transformer body 1 is damaged due to the low heat dissipation rate of the windings, and reducing the adverse impact on the normal operation of the transformer body 1.

[0035] The shape of the infusion tube 5 is the same as the shape of the arrangement of the plurality of radiator fins 2, which can increase the volume of the two infusion tubes 5, thereby increasing the residence time of the insulating oil inside the infusion tube 5 and the contact area with the inner wall of the infusion tube 5, and enabling the infusion tube 5 to fully absorb the heat generated by the insulating oil.

[0036] Both sides of the plurality of radiator fins 2 adjacent to the outer wall of the transformer body 1 are bent, which can increase the contact area between the radiator fins 2 and the outside air, and is beneficial to improving the heat dissipation efficiency of the radiator fins 2.

[0037] The transmission pipe 3 is arranged in a spiral structure, which can increase the residence time of the insulating oil flowing inside the transmission pipe 3 under the condition that the power of the oil pump 4 remains unchanged, thereby fully transferring the heat energy of the insulating oil to the transmission pipe 3.

[0038] At the same time, the contact area between the transmission pipe 3 and the air is increased, enabling the transmission pipe 3 to dissipate heat quickly.

[0039] Both the transmission pipe 3 and the infusion pipe 5 are made of metal materials. Both the transmission pipe 3 and the infusion pipe 5 are made of metallic copper, which has strong heat exchange performance. It can absorb the heat generated by the insulating oil and transfer the absorbed heat to the external air, which is beneficial to accelerating the heat dissipation rate of the insulating oil and itself.

[0040] An infusion pipe 5 is fixedly installed on the outer wall of the filling pipe 8 directly above the transformer body 1. Through the filling pipe 8, insulating oil can be added to the inside of the infusion pipe 5 in time to prevent the lack of insulating oil due to the relatively fast evaporation rate of the insulating oil.

[0041] A sealing bolt 7 is movably installed at the open end of the filling pipe 8 away from the infusion pipe 5. A thread groove adapted to the sealing bolt 7 is provided on the inner wall of the filling pipe 8. When adding insulating oil to the inside of the infusion pipe 5, rotate the sealing bolt 7 until the small head end of the sealing bolt 7 separates from the open end of the filling pipe 8, and then the insulating oil to be filled can be filled into the inside of the infusion pipe 5 through the filling pipe 8. After the insulating oil filling is completed, insert the small head end of the sealing bolt 7 back into the open end of the filling pipe 8, and then continuously rotate the sealing bolt 7 until the large head end of the sealing bolt 7 fits the open end of the filling pipe 8, so as to seal the open end of the filling pipe 8 and prevent dust in the air from entering the inside of the infusion pipe 5 through the filling pipe 8 and causing blockage of the conduit 6, avoiding adverse effects on the circulating flow of the insulating oil.

[0042] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An energy-saving oil-immersed transformer, characterized in that: including a transformer body (1); radiators (2), a plurality of which are fixedly installed along the outer wall of the transformer body (1), and a chamber for heat dissipation is provided inside the plurality of radiators (2); two infusion tubes (5), symmetrically installed at the upper and lower ends of the transformer body (1), a plurality of conduits (6) communicating with their inner cavities are fixedly installed on one side of the two infusion tubes (5) close to the radiators (2), through holes communicating with the chambers are provided at the upper and lower ends of the plurality of radiators (2), and one ends of the plurality of conduits (6) outside the two infusion tubes (5) are fixedly connected to the inner walls of the through holes; an oil pump (4), fixedly connected to one side of the transformer body (1), the water inlet end of the oil pump (4) is fixedly connected to the outer wall of the infusion tube (5) located directly below the transformer body (1), and the water outlet end of the oil pump (4) is fixedly installed with a transmission pipe (3) connected to the infusion tube (5) located directly above the transformer body (1).

2. An energy-saving oil-immersed transformer according to claim 1, characterized in that: The shape of the infusion tube (5) is the same as the shape in which the plurality of radiators (2) are arranged.

3. An energy-saving oil-immersed transformer according to claim 1, characterized in that: Both sides of the plurality of radiators (2) adjacent to the outer wall of the transformer body (1) are bent.

4. An energy-saving oil-immersed transformer according to claim 1, characterized in that: The transmission pipe (3) is arranged in a spiral structure.

5. An energy-saving oil-immersed transformer according to claim 1, characterized in that: The transmission pipe (3) and the infusion tube (5) are both made of metal materials.

6. An energy-saving oil-immersed transformer according to claim 1, characterized in that: A filling pipe (8) is fixedly installed on the outer wall of the infusion tube (5) located directly above the transformer body (1), a sealing bolt (7) is movably installed at the open end of the filling pipe (8) away from the infusion tube (5), and a thread groove adapted to the sealing bolt (7) is provided on the inner wall of the filling pipe (8).

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