Energy-saving and environment-friendly ultrahigh voltage power transformer

Abstract

This invention belongs to the field of power transformer technology and discloses an energy-saving and environmentally friendly ultra-high voltage power transformer, including an oil-immersed transformer body. The surface of the oil-immersed transformer body is provided with several connector bodies, and the inner cavity of the oil-immersed transformer body is provided with a transformer core. The transformer core is immersed in biodegradable transformer oil. The surface of the oil-immersed transformer body is provided with several heat sinks, and the inner cavity of the heat sinks is connected to a circulation pipe. This invention solves the environmental problems caused by leakage by using biodegradable oil instead of mineral oil. Furthermore, biodegradable oil has a higher flash point and thermal conductivity than mineral oil, which can extend the oil change cycle and further improve the environmental performance of the oil-immersed transformer body. This invention allows for online acid value monitoring of the biodegradable oil through a liquid supply mechanism, and a neutralization reaction is carried out through a stirring mechanism and a feeding mechanism.

Description

Technical Field

[0001] This invention belongs to the field of power transformer technology, specifically an energy-saving and environmentally friendly ultra-high voltage power transformer. Background Technology

[0002] When an oil-immersed transformer is in operation, the heat generated by the windings and core is first transferred to the transformer oil, and then the transformer dissipates heat through the circulation of the transformer oil, ensuring normal operation of the transformer and extending its service life.

[0003] Most existing oil-immersed transformers use mineral oil, which is mainly obtained from natural petroleum through distillation and refining processes. However, mineral oil is non-renewable and difficult to degrade, requiring costly environmental remediation after leakage, thus posing a challenge to the environmental protection capabilities of oil-immersed transformers. While using biodegradable oil to replace mineral oil can solve the environmental problems caused by leakage, biodegradable oil will produce certain acidic substances during long-term use, which will pose a risk of corrosion to the equipment. Based on this, an energy-saving and environmentally friendly ultra-high voltage power transformer that can reduce the impact of the defects of biodegradable oil is proposed. Summary of the Invention

[0004] To address the problems mentioned in the background section, this invention provides an energy-saving and environmentally friendly ultra-high voltage power transformer.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an energy-saving and environmentally friendly ultra-high voltage power transformer, comprising an oil-immersed transformer body, characterized in that: a plurality of connector bodies are provided on the surface of the oil-immersed transformer body, a transformer core is provided in the inner cavity of the oil-immersed transformer body, the transformer core is immersed in biodegradable transformer oil, a plurality of heat sinks are provided on the surface of the oil-immersed transformer body, and a circulation pipe is connected through the inner cavity of the heat sinks, further comprising:

[0006] A liquid supply mechanism is provided on one side of the surface of the oil-immersed transformer body, and a stirring mechanism is provided on the surface of the liquid supply mechanism.

[0007] A feeding mechanism installed on the surface of the mixing mechanism;

[0008] A reaction chamber is provided on the surface of the stirring mechanism, and an oil delivery pipe is connected to the surface of the reaction chamber. A third solenoid valve is provided on the surface of the oil delivery pipe.

[0009] A centrifuge shell is located at the other end of the oil supply pipe. The centrifuge shell has a centrifugal mechanism inside its cavity. The centrifugal mechanism has a centrifuge shell on its surface. The surface of the centrifuge shell is connected to a first oil return pipe. The surface of the first oil return pipe has a fourth solenoid valve and a second oil supply pump.

[0010] Preferably, the liquid supply mechanism includes a first oil supply pump fixed to one side of the surface of the oil-immersed transformer body. One side of the working end of the first oil supply pump is connected to the inner cavity of the oil-immersed transformer body. The other end of the working end of the first oil supply pump is connected to a main oil supply pipe. The other end of the main oil supply pipe is connected to an oleic acid detector. The other end of the oleic acid detector is connected to a connecting oil pipe. The other end of the connecting oil pipe is connected to a second return oil pipe. The second return oil pipe and the circulation pipe form a loop. A first solenoid valve is provided on the surface of the connecting oil pipe.

[0011] Preferably, the stirring mechanism includes an oil supply branch pipe connected to the surface of the connecting oil pipe and a first motor fixed to one side of the surface of the reaction chamber. The other end of the oil supply branch pipe is connected to the inner cavity of the reaction chamber. A second solenoid valve is provided on the surface of the oil supply branch pipe. A first rotating rod is fixed to the output shaft of the first motor. A plurality of stirring rods are fixed to the surface of the first rotating rod.

[0012] Preferably, an auxiliary groove is provided at one end of the stirring rod, and the direction of action of the auxiliary groove is consistent with the rotation direction of the stirring rod.

[0013] Preferably, the feeding mechanism includes a storage box fixed to one side of the surface of the oil-immersed transformer body, a second motor fixed to the surface of the storage box, a second rotating rod fixed to the output shaft of the second motor, a striking rod fixed to the surface of the second rotating rod, a conveying shell connected to the surface of the storage box, a connecting rod fixed to the surface of the second rotating rod, a conveying auger fixed to the surface of the connecting rod, and the other end of the conveying shell connected to the inner cavity of the reaction chamber.

[0014] Preferably, the centrifugal mechanism includes a synchronous wheel, a first transmission rod, a connecting ratchet, a second transmission rod, a connecting block, a centrifugal bowl, and a through hole. The synchronous wheel is fixed to the surface of the output shaft of the first motor. The first transmission rod drives the other end of the synchronous wheel. The connecting ratchet is fixed to one end of the first transmission rod. The second transmission rod is fixed to one end of the connecting ratchet. The connecting block drives the centrifugal bowl through a bevel gear and the second transmission rod. The centrifugal bowl is fixed to the surface of the connecting block. The through hole is formed on the surface of the centrifugal bowl.

[0015] Preferably, the surface of the centrifuge shell is provided with evaporation holes.

[0016] Preferably, a cover block is rotatably provided on the surface of the centrifuge bowl, and the other end of the cover block is fixed to the inner cavity of the centrifuge shell.

[0017] Preferably, the other end of the oil supply pipe is connected to the axis of the cover block and to the inner cavity of the centrifuge bowl, and the first oil return pipe is connected to the inner cavity of the centrifuge shell and located on the outside of the centrifuge bowl.

[0018] Preferably, the surface of the through hole is provided with a stainless steel oil-water separation mesh, and its pore size is ≤5μm.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. This invention solves the environmental problems caused by leakage by using biodegradable oil instead of mineral oil. Furthermore, biodegradable oil has a higher flash point and thermal conductivity than mineral oil, which can extend the oil change cycle and further improve the environmental performance of the oil-immersed transformer body.

[0021] 2. This invention enables online monitoring of the acid value of biodegradable oil through a liquid supply mechanism, and neutralizes it through a stirring mechanism and a feeding mechanism to reduce the acid value of the biodegradable oil. This solves the problem of producing acidic substances in the body of oil-immersed transformers using biodegradable oil. Furthermore, under the centrifugal separation effect of the stirring mechanism driving the centrifugal mechanism, the substances produced by the neutralization reaction can be cleaned up, achieving closed-loop control and improving work efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a three-dimensional structural diagram from another perspective in this invention;

[0024] Figure 3 This is a three-dimensional structural diagram of the oil-immersed transformer body after it has been cut open according to the present invention;

[0025] Figure 4 This is a partial three-dimensional structural diagram of the present invention;

[0026] Figure 5 This is a partial three-dimensional structural diagram of the liquid supply mechanism and the stirring mechanism in this invention;

[0027] Figure 6 This is a partial three-dimensional structural diagram of the centrifugal mechanism and the feeding mechanism in this invention;

[0028] Figure 7 This is a partial three-dimensional structural diagram of the stirring mechanism and the feeding mechanism in this invention;

[0029] Figure 8 This is a partial three-dimensional structural schematic diagram of the present invention;

[0030] Figure 9 This is a magnified partial three-dimensional structural diagram of point 7A in the figure of the present invention.

[0031] In the diagram: 1. Oil-immersed transformer body; 2. Connector body; 3. Transformer core; 4. Heat sink; 5. Circulation pipe; 6. Liquid supply mechanism; 61. First oil supply pump; 62. Main oil supply pipe; 63. Oleic acid detector; 64. First solenoid valve; 65. Connecting oil pipe; 66. Second return oil pipe; 7. Stirring mechanism; 71. Branch oil supply pipe; 72. Second solenoid valve; 73. First motor; 74. First rotating rod; 75. Stirring rod; 8. Auxiliary tank; 9. Feeding mechanism; 91. Storage box; 92. Second motor; 93. 94. Second rotating rod; 95. Striking rod; 96. Conveying shell; 97. Connecting rod; 10. Conveying auger; 11. Oil supply pipe; 12. Third solenoid valve; 13. Centrifuge shell; 14. Centrifuge mechanism; 15. Synchronous pulley; 16. First transmission rod; 17. Connecting ratchet; 18. Second transmission rod; 19. Connecting block; 10. Centrifuge bowl; 11. Through hole; 12. Cover block; 13. First oil return pipe; 14. Fourth solenoid valve; 15. Second oil supply pump; 16. Reaction chamber; 17. Feeding hole; 28. Evaporation hole. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] like Figures 1 to 9 As shown, this invention provides an energy-saving and environmentally friendly ultra-high voltage power transformer, including an oil-immersed transformer body 1, a plurality of connector bodies 2 disposed on the surface of the oil-immersed transformer body 1, a transformer core 3 disposed in the inner cavity of the oil-immersed transformer body 1, the transformer core 3 being immersed in biodegradable transformer oil, a plurality of heat sinks 4 disposed on the surface of the oil-immersed transformer body 1, and a circulation pipe 5 being connected through the inner cavity of the heat sinks 4, and further including:

[0034] A liquid supply mechanism 6 is provided on one side of the surface of the oil-immersed transformer body 1, and a stirring mechanism 7 is provided on the surface of the liquid supply mechanism 6 to provide a neutralization reaction site.

[0035] A feeding mechanism 9 is installed on the surface of the stirring mechanism 7 for adding alkaline substances;

[0036] A reaction chamber 18 is provided on the surface of the stirring mechanism 7, and an oil supply pipe 10 is connected to the surface of the reaction chamber 18. A third solenoid valve 11 is provided on the surface of the oil supply pipe 10.

[0037] Centrifuge shell 12 is located at the other end of oil supply pipe 10. Centrifuge mechanism 13 is provided in the inner cavity of centrifuge shell 12. Centrifuge mechanism 13 and stirring mechanism 7 are driven. Centrifuge shell 12 is provided on the surface of centrifuge mechanism 13. First oil return pipe 15 is connected to the surface of centrifuge shell 12. Evaporation hole 20 is opened on the surface of centrifuge shell 12. Fourth solenoid valve 16 is provided on the surface of first oil return pipe 15. Second oil supply pump 17 is connected to the surface of first oil return pipe 15. The other end of first oil return pipe 15 is connected to liquid supply mechanism 6.

[0038] The liquid supply mechanism 6 includes a first oil supply pump 61 fixed to one side of the surface of the oil-immersed transformer body 1. One side of the working end of the first oil supply pump 61 is connected to the inner cavity of the oil-immersed transformer body 1, and the other end of the working end of the first oil supply pump 61 is connected to a main oil supply pipe 62. The other end of the main oil supply pipe 62 is connected to an oleic acid detector 63, and the other end of the oleic acid detector 63 is connected to a connecting oil pipe 65. The other end of the connecting oil pipe 65 is connected to a second return oil pipe 66. The second return oil pipe 66 and the circulation pipe 5 form a loop. A first solenoid valve 64 is provided on the surface of the connecting oil pipe 65. In this embodiment, the first oil supply pump 61, the main oil supply pipe 62, and the oleic acid detector... The arrangement of instrument 63, first solenoid valve 64, connecting oil pipe 65, and second return oil pipe 66 allows the transformer oil in the inner cavity of the oil-immersed transformer body 1 to be drawn in by the first oil supply pump 61. Then, under the action of the main oil supply pipe 62, the oil is transported to the oil-acid detector 63. Under the action of the oil-acid detector 63, the acid value in the transformer oil can be checked, and the acid value is fed back to the PLC controller. Under the action of the PLC controller, the stirring mechanism 7 or the first solenoid valve 64 can be selectively activated. And under the action of the connecting oil pipe 65 and the second return oil pipe 66, the transformer oil can be transported to the circulation pipe 5.

[0039] The stirring mechanism 7 includes an oil supply branch pipe 71 connected to the surface of the connecting oil pipe 65 and a first motor 73 fixed to one side of the surface of the reaction chamber 18. The other end of the oil supply branch pipe 71 is connected to the inner cavity of the reaction chamber 18. A second solenoid valve 72 is provided on the surface of the oil supply branch pipe 71. A first rotating rod 74 is fixed to the output shaft of the first motor 73. Several stirring rods 75 are fixed to the surface of the first rotating rod 74. In this embodiment, through the arrangement of the oil supply branch pipe 71, the second solenoid valve 72, the first motor 73, the first rotating rod 74 and the stirring rods 75, under the action of the PLC controller, the second solenoid valve 72 can be opened, thereby sending the transformer oil containing acidic substances into the reaction chamber 18. Then, under the action of the first motor 73, the first rotating rod 74 and the stirring rods 75 can be rotated, thereby stirring the transformer oil and alkaline substances, so that the transformer oil undergoes a neutralization reaction.

[0040] An auxiliary groove 8 is provided at one end of the stirring rod 75. The direction of action of the auxiliary groove 8 is the same as the rotation direction of the stirring rod 75. In this embodiment, by setting the auxiliary groove 8, when the stirring rod 75 is working, the transformer oil in the reaction chamber 18 can be stirred and transported under the action of the auxiliary groove 8, so that the transformer oil rolls upward, thereby improving the stirring rod 75's ability to stir the transformer oil.

[0041] The feeding mechanism 9 includes a storage box 91 fixed to one side of the surface of the oil-immersed transformer body 1. A second motor 92 is fixed to the surface of the storage box 91. A second rotating rod 93 is fixed to the output shaft of the second motor 92. A striking rod 94 is fixed to the surface of the second rotating rod 93. A conveying shell 95 is connected to the surface of the storage box 91. A connecting rod 96 is fixed to the surface of the second rotating rod 93. A conveying auger 97 is fixed to the surface of the connecting rod 96. The other end of the conveying shell 95 is connected to the inner cavity of the reaction chamber 18. In this embodiment, the feeding mechanism 91... The arrangement of the second motor 92, the second rotating rod 93, the striking rod 94, the conveying shell 95, the connecting rod 96, and the conveying auger 97, under the action of the second motor 92, causes the second rotating rod 93 and the connecting rod 96 to rotate, thereby causing the striking rod 94 and the conveying auger 97 to work. Under the action of the striking rod 94, the alkaline substance is struck, preventing the alkaline substance from crystallizing due to long-term static storage and loosening. Under the action of the conveying auger 97, the alkaline substance is accurately and quantitatively delivered into the reaction chamber 18.

[0042] The surface of the storage box 91 is provided with a feeding hole 19. In this embodiment, this setting makes it convenient for staff to add alkaline substances.

[0043] The centrifuge mechanism 13 includes a synchronous pulley 131, a first transmission rod 132, a connecting ratchet 133, a second transmission rod 134, a connecting block 135, a centrifuge bowl 136, and a through hole 137. The synchronous pulley 131 is fixed to the surface of the output shaft of the first motor 73. The first transmission rod 132 drives the other end of the synchronous pulley 131. The connecting ratchet 133 is fixed to one end of the first transmission rod 132. The second transmission rod 134 is fixed to one end of the connecting ratchet 133. The connecting block 135 drives the centrifuge bowl 136 via bevel teeth and the second transmission rod 134. The centrifuge bowl 136 is fixed to the surface of the connecting block 135. The through hole 137 is opened on the surface of the centrifuge bowl 136. Evaporation holes 20 are opened on the surface of the centrifuge shell 12. In this embodiment, the synchronous pulley... The arrangement of the first transmission rod 131, the connecting ratchet 133, the second transmission rod 134, the connecting block 135, the centrifuge bowl 136, and the through hole 137 allows the synchronous pulley 131 to drive the first transmission rod 132 to rotate when the first motor 73 is working. If the working directions of the first transmission rod 132 and the connecting ratchet 133 are the same, the second transmission rod 134 will rotate. If the working directions of the first transmission rod 132 and the connecting ratchet 133 are not the same, the second transmission rod 134 will not rotate. When the second transmission rod 134 rotates, the centrifuge bowl 136 can drive the through hole 137 to rotate when the connecting block 135 rotates, thereby performing centrifugal operation.

[0044] A cover block 14 is rotatably provided on the surface of the centrifuge bowl 136. The other end of the cover block 14 is fixed to the inner cavity of the centrifuge shell 12. In this embodiment, the cover block 14 is used to block the transformer oil in the inner cavity of the centrifuge bowl 136, so that the transformer oil flows out through the through hole 137.

[0045] The other end of the oil supply pipe 10 is connected to the axis of the cover block 14 and to the inner cavity of the centrifuge bowl 136. The first oil return pipe 15 is connected to the inner cavity of the centrifuge shell 12 and is located outside the centrifuge bowl 136. In this embodiment, this arrangement allows the transformer oil to be stably injected into the centrifuge bowl 136, improving the practicality of the device. In addition, the transformer oil can be stably transported under the action of the first oil return pipe 15.

[0046] The surface of the through hole 137 is provided with a stainless steel oil-water separation mesh with a pore size ≤ 5μm. In this embodiment, with this setting, when the transformer oil in the centrifuge bowl 136 is centrifuged, the sediment and water can be stored in the centrifuge bowl 136 through the through hole 137, and the clean oil can enter the centrifuge shell 12 through the through hole 137.

[0047] The above solution addresses the environmental problems caused by leakage by using biodegradable oil instead of mineral oil. Furthermore, biodegradable oil has a higher flash point and thermal conductivity than mineral oil, extending the oil change cycle and further improving the environmental performance of the oil-immersed transformer body 1. This invention utilizes a liquid supply mechanism 6 to monitor the acid value of the biodegradable oil online, and a stirring mechanism 7 and a feeding mechanism 9 to neutralize it, reducing the acid value of the biodegradable oil. This solves the problem of producing acidic substances in the oil-immersed transformer body 1 using biodegradable oil. Additionally, the centrifugal separation effect of the centrifugal mechanism 13 driven by the stirring mechanism 7 cleans up the substances produced by the neutralization reaction, achieving closed-loop control and improving work efficiency.

[0048] The working principle and usage process of this invention: During the daily operation of the oil-immersed transformer body 1, the transformer oil in the inner cavity of the oil-immersed transformer body 1 can be injected into the circulation pipe 5 through the oil supply main pipe 62, the oil acid detector 63, the first solenoid valve 64, the connecting oil pipe 65, and the second return oil pipe 66 under the action of the heat sink 4. Then, the transformer oil is cooled by the heat sink 4, and the cooled transformer oil returns to the oil-immersed transformer body 1 to form a loop.

[0049] The transformer oil used in this application is a biodegradable transformer oil, which has a certain degree of environmental friendliness compared to the mineral oil commonly used in transformers. Biodegradable oils, such as rapeseed oil and castor oil modified products, have a biodegradation rate of >95%. The risk of soil and water pollution in case of leakage is significantly lower than that of mineral oil, and the raw materials are renewable, which improves the environmental performance of this device.

[0050] Furthermore, the breakdown voltage of plant-based ester oil is ≥75kV / 2.5mm, which is comparable to that of mineral oil (200-250kV / cm). Its high flash point (≥300℃) enhances fire safety. In addition, the thermal conductivity of synthetic ester oil is 0.12-0.15W / (m·K), and its heat dissipation efficiency is close to that of mineral oil, which can extend the oil change cycle and further improve the environmental performance of the oil-immersed transformer body 1.

[0051] However, biodegradable transformer oil, due to its insufficient antioxidant capacity, is prone to generating acidic substances during long-term operation. The acidic substances in the oil will cause a significant increase in conductivity, a decrease in breakdown voltage, and corrosion of equipment.

[0052] When the transformer oil passes through the oleic acid detector 63, the acid value of the transformer oil can be checked by the oleic acid detector 63. If the acid value is higher than 0.1 mg KOH / g, the first solenoid valve 64 and the oil supply branch pipe 71 can be activated under the PLC controller, so that part of the transformer oil can circulate and exchange heat through the connecting oil pipe 65 and the second return oil pipe 66, and the other part of the transformer oil can enter the reaction chamber 18 through the oil supply branch pipe 71. At this time, the PLC controller activates the second motor 92, and under the action of the second rotating rod 93, the striking rod 94, the conveying shell 95, the connecting rod 96 and the conveying auger 97, the alkaline substance falls into the reaction chamber 18.

[0053] Workers can place sodium hydroxide (NaOH) into the feeding hole 19, and then, under the operation of the second motor 92 and the conveying auger 97, accurately feed the sodium hydroxide (NaOH) into the reaction chamber 18.

[0054] The dosage of sodium hydroxide (NaOH) is calculated using the formula: NaOH dosage (g) = oil mass (g) × saponification value (mg / g) ÷ 1000. The saponification value indicates the number of milligrams of sodium hydroxide required for complete saponification of each gram of oil. For example, the saponification value of common vegetable oils is approximately 180-200 mg NaOH / g. The basic sodium hydroxide dosage is calculated based on the total amount of oil.

[0055] However, since transformer oil contains free fatty acids, it is necessary to add sodium hydroxide to neutralize the acid value. The acid value refers to the number of milligrams of KOH required to neutralize 1g of free acid in the oil.

[0056] The supplementary formula is: NaOH amount (g) = fat mass (g) × acid value (mg / g) ÷ 1000 × 40 / 56. The coefficient 40 / 56 represents the molar mass ratio of KOH to NaOH.

[0057] Therefore, the acid value of the transformer oil is known through the oleic acid detector 63, and under the condition of constant volume in the reaction chamber 18, the feeding mechanism 9 quantitatively adds sodium hydroxide (NaOH), so that sodium hydroxide (NaOH) enters the reaction chamber 18, and the sodium hydroxide (NaOH) and the transformer oil undergo a neutralization reaction. Under the action of the first motor 73, the stirring rod 75 stirs the transformer oil and alkaline substances, thereby increasing the reaction rate.

[0058] The general reaction formula is: RCOOH + NaOH → RCOONa + H2O.

[0059] Furthermore, as mentioned above, the transformer oil and alkaline substances can be stirred by the stirring rod 75 to increase the neutralization reaction rate. Since the transformer oil flows out from the oil-immersed transformer body 1, it carries a certain temperature. During normal operation, the upper limit of the transformer oil temperature is 80°C, and the normal operating temperature is between 35°C and 60°C. Therefore, the neutralization reaction rate can be increased under the influence of the transformer oil temperature itself, further improving the energy-saving effect of the device.

[0060] After 30 minutes of neutralization and reversal in reaction chamber 18, the transformer oil is neutralized. According to the general reaction formula, the transformer oil contains certain saponified substances and water. Under the action of the PLC controller, the transformer oil in reaction chamber 18 enters centrifuge shell 12 through oil supply pipe 10 and third solenoid valve 11. Then, the first motor 73 reverses, causing the first transmission rod 132, connecting ratchet 133, second transmission rod 134, connecting block 135, centrifuge bowl 136, and through hole 137 to work, thereby centrifuging the transformer oil in centrifuge bowl 136. Due to the hydrophobicity and aperture setting of through hole 137, the transformer clean oil flows through through hole 137 into the space between centrifuge bowl 136 and centrifuge shell 12. Then, under the action of first return oil pipe 15, fourth solenoid valve 16, and second oil supply pump 17, it returns to connecting oil pipe 65 and circulation pipe 5, and participates in heat dissipation through heat sink 4.

[0061] At this time, a certain amount of water and sediment will remain in the centrifugal bowl 136. Then, under the heat transfer of the oil-immersed transformer body 1 itself, the temperature of the centrifugal bowl 136 will rise, which can slowly evaporate the water in the centrifugal bowl 136 and discharge it out through the evaporation hole 20. The sediment can be cleaned during maintenance and repair.

[0062] Under the action of circulation pipe 5 and heat sink 4, the transformer oil is cooled and then returned to the oil-immersed transformer body 1 to participate in the protection of transformer core 3. Since some oil needs to participate in the neutralization reaction, the amount of oil is excessive to avoid participating in the neutralization reaction and causing insufficient oil.

[0063] By neutralizing a portion of the oil, the overall acid value of the transformer oil is reduced. This not only prevents acidic substances from corroding the transformer core 3, but also ensures that the oil's heat dissipation effect is not affected during the neutralization reaction.

[0064] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0065] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving and environmentally friendly ultra-high voltage power transformer, comprising an oil-immersed transformer body (1), characterized in that: The surface of the oil-immersed transformer body (1) is provided with several connector bodies (2), the inner cavity of the oil-immersed transformer body (1) is provided with a transformer core (3), the transformer core (3) is immersed in biodegradable transformer oil, the surface of the oil-immersed transformer body (1) is provided with several heat sinks (4), the inner cavity of the heat sinks (4) is connected by a circulation pipe (5), and it also includes: A liquid supply mechanism (6) is provided on one side of the surface of the oil-immersed transformer body (1), and a stirring mechanism (7) is provided on the surface of the liquid supply mechanism (6). The feeding mechanism (9) is installed on the surface of the mixing mechanism (7); A reaction chamber (18) is provided on the surface of the stirring mechanism (7), and an oil delivery pipe (10) is connected to the surface of the reaction chamber (18). A third solenoid valve (11) is provided on the surface of the oil delivery pipe (10). Centrifuge shell (12) is provided at the other end of oil supply pipe (10). Centrifuge mechanism (13) is provided in the inner cavity of centrifuge shell (12). Centrifuge shell (12) is provided on the surface of centrifuge mechanism (13). First oil return pipe (15) is connected to the surface of centrifuge shell (12). Fourth solenoid valve (16) is provided on the surface of first oil return pipe (15). Second oil supply pump (17) is connected to the surface of first oil return pipe (15). The liquid supply mechanism (6) includes a first oil supply pump (61) fixed to one side of the surface of the oil-immersed transformer body (1). One side of the working end of the first oil supply pump (61) is connected to the inner cavity of the oil-immersed transformer body (1). The other end of the working end of the first oil supply pump (61) is connected to a main oil supply pipe (62). The other end of the main oil supply pipe (62) is connected to an oleic acid detector (63). The other end of the oleic acid detector (63) is connected to a connecting oil pipe (65). The other end of the connecting oil pipe (65) is connected to a second return oil pipe (66). The second return oil pipe (66) and the circulation pipe (5) form a loop. A first solenoid valve (64) is provided on the surface of the connecting oil pipe (65). The stirring mechanism (7) includes an oil supply branch pipe (71) connected to the surface of the connecting oil pipe (65) and a first motor (73) fixed to one side of the surface of the reaction chamber (18). The other end of the oil supply branch pipe (71) is connected to the inner cavity of the reaction chamber (18). A second solenoid valve (72) is provided on the surface of the oil supply branch pipe (71). A first rotating rod (74) is fixed on the output shaft of the first motor (73). A plurality of stirring rods (75) are fixed on the surface of the first rotating rod (74). The centrifugal mechanism (13) includes a synchronous wheel (131), a first transmission rod (132), a connecting ratchet (133), a second transmission rod (134), a connecting block (135), a centrifugal bowl (136), and a through hole (137). The synchronous wheel (131) is fixed to the surface of the output shaft of the first motor (73). The first transmission rod (132) is driven by the other end of the synchronous wheel (131). The connecting ratchet (133) is fixed to one end of the first transmission rod (132). The second transmission rod (134) is fixed to one end of the connecting ratchet (133). The connecting block (135) is driven by the bevel gear and the second transmission rod (134). The centrifugal bowl (136) is fixed to the surface of the connecting block (135). The through hole (137) is opened on the surface of the centrifugal bowl (136).

2. The energy-saving and environmentally friendly ultra-high voltage power transformer according to claim 1, characterized in that: An auxiliary groove (8) is provided at one end of the stirring rod (75), and the direction of action of the auxiliary groove (8) is consistent with the rotation direction of the stirring rod (75).

3. The energy-saving and environmentally friendly ultra-high voltage power transformer according to claim 1, characterized in that: The feeding mechanism (9) includes a storage box (91) fixed to one side of the surface of the oil-immersed transformer body (1). A second motor (92) is fixed to the surface of the storage box (91). A second rotating rod (93) is fixed to the output shaft of the second motor (92). A striking rod (94) is fixed to the surface of the second rotating rod (93). A conveying shell (95) is connected to the surface of the storage box (91). A connecting rod (96) is fixed to the surface of the second rotating rod (93). A conveying auger (97) is fixed to the surface of the connecting rod (96). The other end of the conveying shell (95) is connected to the inner cavity of the reaction chamber (18).

4. The energy-saving and environmentally friendly ultra-high voltage power transformer according to claim 1, characterized in that: The centrifuge shell (12) has evaporation holes (20) on its surface.

5. The energy-saving and environmentally friendly ultra-high voltage power transformer according to claim 1, characterized in that: The surface of the centrifuge bowl (136) is rotatably provided with a cover block (14), and the other end of the cover block (14) is fixed to the inner cavity of the centrifuge shell (12).

6. The energy-saving and environmentally friendly ultra-high voltage power transformer according to claim 1, characterized in that: The other end of the oil delivery pipe (10) is connected to the axis of the cover block (14) and to the inner cavity of the centrifuge bowl (136), and the first return oil pipe (15) is connected to the inner cavity of the centrifuge shell (12) and located outside the centrifuge bowl (136).

7. The energy-saving and environmentally friendly ultra-high voltage power transformer according to claim 1, characterized in that: The surface of the through hole (137) is provided with a stainless steel oil-water separation mesh, and its pore size is ≤5μm.

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