Harmonic-resistant transformer for power supply systems

Abstract

The application discloses an anti-harmonic transformer for a power supply system, which comprises a voltage-withstanding shell, an internal winding, a heat dissipation box, a circulating oil tank, a heat dissipation mechanism and a dust removal protection mechanism. The heat dissipation mechanism is composed of an external air inlet box, a compressed air tank, a condenser, a circulating exhaust pipe and a top exhaust pipe. The dust removal protection mechanism is composed of a transmission assembly, a transmission worm, a rotating worm wheel and a cleaning fan. The anti-harmonic transformer for the power supply system is provided with the heat dissipation box, the circulating oil tank, the compressed air tank and the condenser, so that the service life of transformer oil is prolonged, the heat dissipation efficiency of the internal winding and the filter reactor is further improved, the diameter of the top oil inlet pipe is much larger than the diameter of the bottom oil outlet nozzle, the transformer oil inside the anti-harmonic transformer can be discharged more cleanly, the existence of un-discharged transformer oil is prevented, the service life of the transformer oil is prolonged, the transmission assembly and the cleaning fan are arranged to clean the dust on the top high-voltage terminal below.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of anti-harmonic transformer, in particular to an anti-harmonic transformer for power supply system. BACKGROUND

[0002] The transformer is a device for changing AC voltage by using the principle of electromagnetic induction, and the main components are primary coil, secondary coil and iron core (magnetic core). In electrical equipment and radio circuits, it is often used for voltage conversion, impedance matching, safety isolation, etc. In the generator, no matter the coil moves through the magnetic field or the magnetic field moves through the fixed coil, the potential can be induced in the coil. In these two cases, the value of magnetic flux does not change, but the amount of magnetic flux intersecting the coil changes, which is the principle of mutual induction. The components of the transformer include the body (iron core, winding, insulation, lead), transformer oil, oil tank and cooling device, voltage regulating device, protection device. The transformer is a device for changing voltage, current and impedance by using electromagnetic mutual induction. Harmonic is the Fourier series decomposition of the periodic non-sinusoidal current, which is usually called high-order harmonic, and the base wave is the component with the same frequency as the power frequency (50Hz). The interference of high-order harmonic is a major "public nuisance" affecting power quality in current power systems, and countermeasures must be taken.

[0003] The existing anti-harmonic transformer mostly uses insulation between the coils to resist harmonics, but this method has the following defects: 1. The transformer generates high temperature during operation, and the conventional heat dissipation is generally to provide a plurality of protruding edges on the outer shell of the transformer to enhance the heat dissipation effect. However, the insulation layer between the coils is generally blocked by an insulating rubber plate, which will deform in a high temperature environment, resulting in poor insulation effect, and high temperature can easily cause a fire. 2. The anti-harmonic transformer generally has a transformer oil circuit, and the transformer oil in the oil circuit can easily deteriorate after long-term use and needs to be cleaned and replaced in time. However, the transformer oil inside is not easy to clean out completely when replaced, and the newly injected oil can be easily contaminated, affecting the service life of the transformer oil. 3. The high-voltage terminal on the top of the transformer will be contaminated with dust after long-term use, which can cause short circuit and other conditions, affecting the normal use of the transformer. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides an anti-harmonic transformer for power supply system, which has the advantages of good heat dissipation effect, air charging and oil discharge, clean transformer oil, good protection for high-voltage terminal and dust removal effect, etc., solving the problems raised in the above background.

[0005] In order to achieve the above object, the present application provides the following technical scheme: An anti-harmonic transformer for a power supply system, comprising a voltage-withstanding shell, built-in windings, a heat dissipation box, a circulating oil tank, a heat dissipation mechanism and a dust removal protection mechanism, the built-in windings are arranged inside the voltage-withstanding shell, a filter reactor is arranged outside the built-in windings, built-in insulation plates are arranged between the built-in windings, the heat dissipation box is fixedly installed on the outer wall of the voltage-withstanding shell and is in communication with the voltage-withstanding shell, the circulating oil tank is arranged on the top of the heat dissipation box and is provided with a circulating pump inside, a top high-voltage terminal is arranged on the top of the voltage-withstanding shell and is in conductive connection with the built-in windings, the heat dissipation mechanism is arranged outside the heat dissipation box and comprises an external air inlet box, a compressed air tank, a condenser, a circulating exhaust pipe and a top exhaust pipe, a circulating oil passage is arranged outside the circulating oil tank, an oil guide pipe is connected between the circulating oil tank and the heat dissipation box, a top protection support is fixedly connected to the top of the voltage-withstanding shell and is arranged above the top high-voltage terminal, and the dust removal protection mechanism is arranged below the top protection support and comprises a transmission assembly, a transmission worm, a rotating worm wheel and a cleaning fan.

[0006] Preferably, three groups of built-in windings are arranged inside the voltage-withstanding shell, the voltage-withstanding shell and the heat dissipation box are filled with transformer oil, a bottom mounting seat is fixedly connected to the bottom of the voltage-withstanding shell, a grounding wire is arranged in the middle of the bottom mounting seat and is fixedly connected to the bottom of the voltage-withstanding shell, a top oil inlet pipe is arranged on the top of the voltage-withstanding shell, a bottom oil outlet nozzle is arranged on the bottom of the outer wall of the voltage-withstanding shell, and the diameter of the bottom oil outlet nozzle is much smaller than the diameter of the top oil inlet pipe.

[0007] Preferably, the built-in insulation plates are provided with built-in circulating air guide grooves inside, the external air inlet box is fixedly connected and installed outside the heat dissipation box, the compressed air tank is arranged inside the external air inlet box, the condenser is arranged inside the external air inlet box and is connected to the compressed air tank, and an air inlet groove is formed in the outer wall of the external air inlet box.

[0008] Preferably, one end of the circulating exhaust pipe is in communication with the inside of the compressed air tank, the other end of the circulating exhaust pipe is connected with an end sealing gasket, the end sealing gasket is fixedly connected to the end of the built-in insulation plate, and the built-in circulating air guide grooves inside the built-in insulation plate are arranged in a U shape.

[0009] Preferably, the two ends of the heat dissipation pipe are connected to the two sides of the compressed air tank respectively, the middle part of the heat dissipation pipe is arranged inside the circulating oil tank, the heat dissipation pipe is arranged in an S shape inside the circulating oil tank, the diameter of the heat dissipation pipe arranged inside the circulating oil tank is smaller than the diameter of the heat dissipation pipe exposed outside the circulating oil tank.

[0010] Preferably, the interior of the compressed air tank is provided with a compressor, the compressed air tank is in communication with the interior of the external air inlet tank, and the top of the compressed air tank is provided with a top exhaust pipe, and the top exhaust pipe is provided with a valve.

[0011] Preferably, the circulating oil circuit is in the shape of a square tube, the transmission assembly is arranged on the circulating oil circuit, and the transmission assembly is composed of a rotating blade, a baffle, a first transmission rod, a first transmission box, a first bevel gear, a second bevel gear, a second transmission rod, a second transmission box, a third bevel gear and a fourth bevel gear.

[0012] Preferably, the first transmission box is fixedly installed at the top of the circulating oil circuit, the first transmission rod is arranged in the interior of the first transmission box, the first bevel gear is in transmission connection with the top of the first transmission rod, the second bevel gear is in meshing transmission with the first bevel gear, one end of the second transmission rod is in rotational connection with the inner wall of the first transmission box, the second bevel gear is arranged on the second transmission rod, the end of the second transmission rod is in transmission connection with the third bevel gear, one side of the second transmission box is fixedly connected with the top of the first transmission box, the third bevel gear is in meshing transmission with the fourth bevel gear, the transmission worm is in transmission connection with the fourth bevel gear, and the top of the second transmission box is fixedly connected with the bottom of the top protection support.

[0013] Preferably, the transmission worm is in rotational connection with the interior of the second transmission box, the transmission worm is in transmission connection with the rotating worm wheel, the top of the rotating worm wheel is in rotational connection with the bottom of the top protection support, and the cleaning fan is installed at the bottom of the rotating worm wheel and arranged directly above the top high-voltage terminal.

[0014] Compared with the prior art, the anti-harmonic transformer for a power supply system has the following beneficial effects:

[0015] 1. The anti-harmonic transformer for a power supply system is provided with a heat dissipation tank, a circulating oil tank, a compressed air tank and a condenser, so that the transformer oil in the heat dissipation tank and the circulating oil tank can be cooled by the compressed cold air in the compressed air tank during use, the circulating oil tank can be used to circulate the transformer oil, the temperature of the transformer oil cannot rapidly rise, the service life of the transformer oil is improved, the high temperature generated by the built-in winding and the filter reactor during work can be rapidly dissipated, and the heat dissipation efficiency of the built-in winding and the filter reactor is further improved.

[0016] 2. The anti-harmonic transformer used in the power supply system has a diameter of the top oil inlet pipe that is much larger than the diameter of the bottom oil drain nozzle. Therefore, when draining the transformer oil, a sealed pipe can be used to connect the top oil inlet pipe and the top exhaust pipe, and compressed gas can be injected into the pressure-resistant shell and the circulating oil tank to increase the air pressure inside the pressure-resistant shell and the circulating oil tank, so that the transformer oil inside can be discharged more cleanly, preventing the presence of undischarged transformer oil, which will cause contamination of the new transformer oil when it is added later, thereby reducing the service life of the transformer oil.

[0017] 3. The anti-harmonic transformer used in the power supply system adopts a transmission component, a top protective bracket and a cleaning fan. When in use, the circulating oil circuit can be set so that the transformer oil circulates and drives the transmission component to move, so that the cleaning fan can rotate on its own to clean the dust on the top high-voltage terminal below it. The top protective bracket can prevent fallen leaves or other impurities from falling on the top high-voltage terminal and affecting the conductivity of the top high-voltage terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the external three-dimensional structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the top view of the structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the front view structure of the present invention;

[0021] Figure 4 This is a rear view structural diagram of the present invention;

[0022] Figure 5 It is a left-side structural schematic diagram of the present invention;

[0023] Figure 6 This is a schematic side sectional structural diagram of the present invention;

[0024] Figure 7 It is a right side structural schematic diagram of the present invention;

[0025] Figure 8 Schematic diagram of the three-dimensional structure of the transmission assembly of the present invention;

[0026] Figure 9 For the present invention Figure 3 A schematic diagram of the enlarged structure of the middle part A;

[0027] Figure 10 It is a schematic cross-sectional structural diagram of the built-in insulating plate of the present invention.

[0028] In the figure: 1, pressure-resistant shell; 2, built-in winding; 3, filter reactor; 4, heat dissipation box; 5, circulating oil tank; 6, built-in insulation plate; 7, top high-voltage terminal; 8, external air inlet box; 9, compressed air tank; 10, condenser; 11, circulating exhaust pipe; 12, end sealing gasket; 13, built-in circulating air guide groove; 14, top exhaust pipe; 15, top oil inlet pipe; 16, bottom oil outlet nozzle; 17, circulating oil circuit; 18, heat dissipation pipeline; 19, oil guide pipe; 20, rotating blade; 21, baffle; 22, first transmission rod; 23, first transmission box; 24, first bevel gear; 25, second bevel gear; 26, second transmission rod; 27, second transmission box; 28, third bevel gear; 29, fourth bevel gear; 30, transmission worm; 31, top protection support; 32, rotating worm gear; 33, cleaning fan; 34, bottom mounting seat; 35, air inlet groove. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application. EMBODIMENT

[0030] Please refer to Figures 1 to 10 The present application provides a technical solution: an anti-harmonic transformer for a power supply system, comprising a pressure-resistant shell 1, a built-in winding 2, a heat dissipation box 4, a circulating oil tank 5, a heat dissipation mechanism, and a dust removal protection mechanism, characterized in that: the built-in winding 2 is arranged inside the pressure-resistant shell 1, the built-in winding 2 is provided with a filter reactor 3 outside, built-in insulation plates 6 are arranged between the built-in windings 2, the heat dissipation box 4 is fixedly installed on the outer wall of the pressure-resistant shell 1, and the heat dissipation box 4 is in communication with the pressure-resistant shell 1, the circulating oil tank 5 is arranged at the top of the heat dissipation box 4, and a circulating pump is arranged inside the circulating oil tank 5, a top high-voltage terminal 7 is arranged at the top of the pressure-resistant shell 1, the top high-voltage terminal 7 is in conductive connection with the built-in winding 2, the heat dissipation mechanism is arranged outside the heat dissipation box 4, the heat dissipation mechanism is composed of an external air inlet box 8, a compressed air tank 9, a condenser 10, a circulating exhaust pipe 11, and a top exhaust pipe 14, a circulating oil circuit 17 is arranged outside the circulating oil tank 5, an oil guide pipe 19 is connected between the circulating oil tank 5 and the heat dissipation box 4, a top protection support 31 is fixedly connected to the top of the pressure-resistant shell 1, the top protection support 31 is arranged above the top high-voltage terminal 7, a dust removal protection mechanism is arranged below the top protection support 31, and the dust removal protection mechanism is composed of a transmission assembly, a transmission worm 30, a rotating worm gear 32, and a cleaning fan 33.

[0031] In use, first, when the transformer house is working, since the built-in winding 2 and the filter reactor 3 generate a large amount of heat during work, the pressure-resistant shell 1 and the transformer oil inside the heat sink 4 are required to be used for heat dissipation treatment to reduce the temperature of the built-in winding 2 and prevent the built-in winding 2 from being damaged. When the built-in winding 2 is cooled, the outside cold air is introduced into the heat sink 4 through the circulating exhaust pipe 11, so that the temperature of the transformer oil in the heat sink 4 and the pressure-resistant shell 1 is lowered, and the built-in insulation plate 6 further reduces the transmission of harmonics between the built-in winding 2. The circulating exhaust pipe 11 is connected to the built-in insulation plate 6, so that the built-in insulation plate 6 also cools the transformer oil between the built-in winding 2, improving the cooling effect of the built-in winding 2. When the transformer oil is used for a long time, impurities will exist inside, so it needs to be replaced. When the transformer oil is discharged normally, the transformer oil will stick to the inner wall of the pressure-resistant shell 1, the built-in winding 2 and the filter reactor 3, and cannot be completely discharged. At this time, compressed air needs to be introduced into the inside of the pressure-resistant shell 1 to increase the internal pressure, so that the transformer oil is driven by the rapid flow of high-pressure gas inside, so that the inside of the transformer oil can be completely discharged. In addition, when the transformer oil is circulated and cooled, the transformer oil flowing in the circulating oil path 17 drives the transmission assembly to move, so that the cleaning fan 33 rotates to remove dust and cool the top high-voltage terminal 7.

[0032] The built-in winding 2 is provided with three groups inside the pressure-resistant shell 1, the pressure-resistant shell 1 and the heat sink 4 are filled with transformer oil, the bottom mounting seat 34 is fixedly connected to the bottom of the pressure-resistant shell 1, the grounding wire is arranged in the middle of the bottom mounting seat 34, the grounding wire is fixedly connected to the bottom of the pressure-resistant shell 1, the top oil inlet pipe 15 is arranged at the top of the pressure-resistant shell 1, and the bottom oil outlet nozzle 16 is arranged at the bottom of the outer side wall of the pressure-resistant shell 1. The diameter of the bottom oil outlet nozzle 16 is much smaller than the diameter of the top oil inlet pipe 15;

[0033] In use, when the oil is discharged, the valve of the bottom oil outlet nozzle 16 is opened, the top exhaust pipe 14 and the top oil inlet pipe 15 are connected through a sealing pipe, then high-pressure cold air is filled into the inside of the pressure-resistant shell 1, and the oil discharge amount of the bottom oil outlet nozzle 16 is small, so its flow rate is fast, and in the high-pressure environment, the oil in the inside of the pressure-resistant shell 1 will be completely discharged under the extrusion of the air pressure, so that the waste transformer oil can be completely discharged, preventing internal residues, causing the oil to be contaminated when adding new oil subsequently, and improving the service life of the new oil.

[0034] A built-in circulating air guide groove 13 is provided inside the built-in insulating plate 6, the external air intake box 8 is fixedly connected and installed on the outside of the heat dissipation box 4, the compressed air box 9 is provided inside the external air intake box 8, the condenser 10 is provided inside the external air intake box 8, the condenser 10 is connected to the compressed air box 9, an air intake groove 35 is provided on the outer wall of the external air intake box 8, one end of the circulating exhaust pipe 11 is connected to the interior of the compressed air box 9, the other end of the circulating exhaust pipe 11 is connected to the end head sealing gasket 12, the end head sealing gasket 12 is fixedly connected to the end of the built-in insulating plate 6, the built-in circulating air guide groove 13 inside the built-in insulating plate 6 is U-shaped, a compressor is provided inside the compressed air box 9, the compressed air box 9 is connected to the interior of the external air intake box 8, a top exhaust pipe 14 is provided on the top of the compressed air box 9, and a valve is provided on the top exhaust pipe 14;

[0035] During use, the external air intake box 8 filters the external air through the air intake groove 35, and then introduces it into the compressed air box 9. The air is compressed by the air compressor inside the compressed air box 9, and the condenser 10 also cools the air and the compressed air box 9 during this process, so that the air discharged from the compressed air box 9 is compressed cold air; and the cold air is introduced into the circulating air guide groove 13 through the circulating exhaust pipe 11 to cool the built-in insulating plate 6, and the temperature drop of the built-in insulating plate 6 will cause the temperature of the built-in winding 2 near the outside to drop rapidly, thereby improving the heat dissipation effect of the built-in winding 2.

[0036] The two ends of the heat dissipation pipe 18 are respectively connected to the two sides of the compressed air tank 9. The middle part of the heat dissipation pipe 18 is arranged inside the circulating oil tank 5. The heat dissipation pipe 18 is bent in an S shape inside the circulating oil tank 5. The diameter of the heat dissipation pipe 18 inside the circulating oil tank 5 is smaller than the diameter of the heat dissipation pipe 18 exposed outside the circulating oil tank 5.

[0037] During use, when cooling the oil inside the circulating oil tank 5, the compressed cold air is transferred to the interior of the circulating oil tank 5 along the S-shaped curved heat dissipation pipe 18 through the heat dissipation pipe 18, thereby cooling the transformer oil inside the circulating oil tank 5, facilitating the subsequent circulation of the transformer oil, and allowing the cooler transformer oil to be added to the interior of the pressure-resistant casing 1, further facilitating heat dissipation.

[0038] The circulating oil path 17 is in the shape of a square tube, and a transmission assembly is arranged on the circulating oil path 17. The transmission assembly is composed of a rotating vane 20, a baffle 21, a first transmission rod 22, a first transmission box 23, a first bevel gear 24, a second bevel gear 25, a second transmission rod 26, a second transmission box 27, a third bevel gear 28, and a fourth bevel gear 29. The rotating vane 20 and the baffle 21 are arranged inside the circulating oil path 17. The first transmission rod 22 is in transmission connection with the rotating center of the rotating vane 20. The bottom and the top of the rotating vane 20 abut against the bottom and the top of the circulating oil path 17. The rotating vane 20 is in the shape of a curve. The baffle 21 is arranged on both sides of the rotating vane 20, and the width of the baffle 21 is half of the width of the rotating vane 20. The first transmission box 23 is fixedly installed on the top of the circulating oil path 17. The first transmission rod 22 is arranged inside the first transmission box 23. The first bevel gear 24 is in transmission connection with the top of the first transmission rod 22. The second bevel gear 25 is in meshing transmission with the first bevel gear 24. One end of the second transmission rod 26 is in rotation connection with the inner wall of the first transmission box 23. The second bevel gear 25 is arranged on the second transmission rod 26. The end of the second transmission rod 26 is in transmission connection with the third bevel gear 28. One side of the second transmission box 27 is fixedly connected with the top of the first transmission box 23. The third bevel gear 28 is in meshing transmission with the fourth bevel gear 29. The transmission worm 30 is in transmission connection with the fourth bevel gear 29. The top of the second transmission box 27 is fixedly connected with the bottom of the top protection support 31. The transmission worm 30 is in rotation connection with the inside of the second transmission box 27. The transmission worm 30 is in transmission connection with the rotating worm wheel 32. The top of the rotating worm wheel 32 is in rotation connection with the bottom of the top protection support 31. The cleaning fan 33 is installed on the bottom of the rotating worm wheel 32. The cleaning fan 33 is arranged directly above the top high-voltage terminal 7.

[0039] When the circulating oil tank 5 exchanges oil with the inside of the pressure-resistant shell 1, the oil moves in the circulating oil path 17, and the moving oil drives the rotating vane 20 to rotate. When the rotating vane 20 rotates, the first transmission rod 22 rotates, the first transmission rod 22 drives the first bevel gear 24 inside the first transmission box 23 to rotate, the first bevel gear 24 drives the second bevel gear 25 to rotate, the second bevel gear 25 drives the second transmission rod 26 to rotate, the second transmission rod 26 drives the third bevel gear 28 at the end to rotate synchronously, the third bevel gear 28 drives the fourth bevel gear 29 to rotate, the fourth bevel gear 29 drives the coaxial transmission worm 30 to rotate when rotating, the transmission worm 30 drives the rotating worm wheel 32 to rotate, the rotating worm wheel 32 drives the cleaning fan 33 at the bottom to rotate, the cleaning fan 33 removes the dust on the top high-voltage terminal 7 below, and the cleaning fan 33 cools the connecting line at the end of the top high-voltage terminal 7, so that the impurities on the top of the top high-voltage terminal 7 do not affect the conduction of the electric quantity.

[0040] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0041] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A harmonic-resistant transformer for power supply system, comprising a voltage-withstanding shell, an internal winding, a heat-dissipation box, a circulating oil tank, a heat-dissipation mechanism and a dust-removing protection mechanism, characterized in that: The built-in winding is arranged in the inside of the pressure-resistant shell, the outside of the built-in winding is provided with a filter reactor, the built-in windings are provided with built-in insulation plates, the heat dissipation box is fixedly installed on the outer wall of the pressure-resistant shell and is communicated with the pressure-resistant shell, the circulating oil tank is arranged on the top of the heat dissipation box and is provided with a circulating pump in the inside, the top of the pressure-resistant shell is provided with a top high-voltage terminal which is electrically connected with the built-in winding, the heat dissipation mechanism is arranged on the outside of the heat dissipation box and is composed of an outside air inlet tank, a compressed air tank, a condenser, a circulating exhaust pipe and a top exhaust pipe, the outside of the circulating oil tank is provided with a circulating oil passage, the circulating oil tank and the heat dissipation box are connected with an oil guide pipe, the top of the pressure-resistant shell is fixedly connected with a top protection support which is arranged above the top high-voltage terminal, and the dust removal protection mechanism is arranged below the top protection support and is composed of a transmission assembly, a transmission worm, a rotating worm wheel and a cleaning fan. The inside of the built-in insulation plate is provided with a built-in circulating air guide groove, the outside air inlet tank is fixedly connected and installed on the outside of the heat dissipation box, the compressed air tank is arranged in the inside of the outside air inlet tank, the condenser is arranged in the inside of the outside air inlet tank and is connected with the compressed air tank, and an air inlet groove is formed in the outer side wall of the outside air inlet tank. One end of the circulating exhaust pipe is communicated with the inside of the compressed air tank, the other end of the circulating exhaust pipe is connected with an end sealing gasket which is fixedly connected with the end of the built-in insulation plate, and the built-in circulating air guide groove in the inside of the built-in insulation plate is arranged in a U shape. The two ends of the heat dissipation pipeline are connected with the two sides of the compressed air tank, the middle part of the heat dissipation pipeline is arranged in the inside of the circulating oil tank and is arranged in an S shape in the inside of the circulating oil tank, and the diameter of the heat dissipation pipeline arranged in the inside of the circulating oil tank is smaller than the diameter of the heat dissipation pipeline exposed outside the circulating oil tank.

2. A harmonic resistant transformer for use in a power supply system as claimed in claim 1, characterized in that: The built-in winding is arranged in the inside of the pressure-resistant shell in three groups, the inside of the pressure-resistant shell and the heat dissipation box is filled with transformer oil, the bottom of the pressure-resistant shell is fixedly connected with a bottom mounting seat, the middle of the bottom mounting seat is provided with a grounding wire which is fixedly connected with the bottom of the pressure-resistant shell, the top of the pressure-resistant shell is provided with a top oil inlet pipe, the bottom of the outer side wall of the pressure-resistant shell is provided with a bottom oil outlet nozzle, and the diameter of the bottom oil outlet nozzle is much smaller than the diameter of the top oil inlet pipe.

3. A harmonic resistant transformer for use in a power supply system as claimed in claim 1, characterized in that: The inside of the compressed air tank is provided with a compressor, the compressed air tank is communicated with the inside of the outside air inlet tank, the top of the compressed air tank is provided with a top exhaust pipe, and the top exhaust pipe is provided with a valve.

4. A harmonic resistant transformer for use in a power supply system as defined in claim 1, characterized in that: The circulating oil passage is arranged in a square tube shape, the transmission assembly is arranged on the circulating oil passage, the transmission assembly is composed of a rotating blade, a baffle, a first transmission rod, a first transmission box, a first bevel gear, a second bevel gear, a second transmission rod, a second transmission box, a third bevel gear and a fourth bevel gear, the rotating blade and the baffle are arranged in the inside of the heat dissipation pipeline, the first transmission rod is in transmission connection with the rotating center of the rotating blade, the bottom and the top of the rotating blade abut against the bottom and the top of the circulating oil passage, the rotating blade is arranged in a curved shape, the baffle is arranged on the two sides of the rotating blade, and the width of the baffle is half of the width of the rotating blade.

5. A harmonic resistant transformer for a power supply system according to claim 4, characterized in that: The first transmission box is fixedly installed at the top of the circulating oil path, the first transmission rod is arranged in the interior of the first transmission box, the first bevel gear is in transmission connection with the top of the first transmission rod, the second bevel gear is in meshing transmission with the first bevel gear, one end of the second transmission rod is in rotary connection with the inner wall of the first transmission box, the second bevel gear is arranged on the second transmission rod, the end of the second transmission rod is in transmission connection with the third bevel gear, one side of the second transmission box is fixedly connected with the top of the first transmission box, the third bevel gear is in meshing transmission with the fourth bevel gear, the transmission worm is in transmission connection with the fourth bevel gear, and the top of the second transmission box is fixedly connected with the bottom of the top protection support.

6. A harmonic choke transformer for use in a power supply system as claimed in claim 5, characterized in that: The transmission worm is in rotary connection with the interior of the second transmission box, the transmission worm is in transmission connection with the rotary worm gear, the top of the rotary worm gear is in rotary connection with the bottom of the top protection support, and the cleaning fan is installed at the bottom of the rotary worm gear and is arranged directly above the top high-voltage terminal.

Images