Variable inductance flyback transformer structure

Abstract

The application provides a variable inductance flyback transformer structure, which comprises a flyback transformer body, a magnetic core is arranged on the outer wall of the middle part of the flyback transformer body, a main winding is fixedly installed on the inner wall of the middle part of the magnetic core, a secondary winding is sleeved on the outer wall of the side column of the magnetic core, and a high-low air gap is formed on the outer wall of the other side column of the magnetic core. The step air gap or the slope air gap is arranged, and the inductance value is reduced when the magnetic core is close to saturation. The saturation effect in the magnetic core is gradually pushed from the narrow side to the wide side by the step air gap or the slope air gap, so that the magnetic motive force is large under the condition of low-voltage input, the saturation is pushed to the wide side, the inductance of the flyback transformer is reduced, the magnetic motive force is small under the condition of high-voltage input, the narrow side of the air gap is saturated or not saturated, the inductance of the flyback transformer is reduced or not reduced, and the optimization design of the variable inductance flyback transformer structure is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flyback transformer structure, and particularly relates to a variable inductance flyback transformer structure. BACKGROUND

[0002] In a photovoltaic and photovoltaic energy storage power generation system, an auxiliary power supply system generally adopts a fixed-frequency flyback topology to take power from a PV (photovoltaic energy storage power generation system) input and provide power supply for driving of a power tube, power supply for communication and control, and the like. The input voltage range of the PV is generally 120V-1000V. Due to the super-wide input voltage range, the design of the transformer cannot be considered comprehensively. If the transformer works in a discontinuous mode in the full range, the peak current is fixed in the case of a fixed working frequency and in the full voltage input range. However, the discontinuous current peak value is very large, especially in the case of high-voltage input. The on-time of the power tube is very short. Due to the difference between power devices, the on-time and off-time of the switching tube are inconsistent. In the case of small on-time in high-voltage input, the on-off time ratio is relatively large, which may seriously cause the system to be unstable. If the transformer works in a continuous mode, the required inductance is relatively large. In the case of low-voltage input, a magnetic core with a large volume is required to ensure that the magnetic device is not saturated in the case of low-voltage and large current. This is a great challenge to the cost and size. The mainstream design generally selects a suitable inductance of the flyback transformer to make the transformer work in an inductive current continuous mode in the case of low-voltage input of the PV and work in an inductive current discontinuous mode in the case of high-voltage input. However, even if such a compromise design is selected, the optimal design of the flyback transformer in the super-high voltage range cannot be ensured, and the selection of the peak current and the size of the magnetic core of the flyback transformer cannot be considered comprehensively. Moreover, the flyback transformer structure in the market does not have the ability of dustproof, soundproof and noise reduction. The mounting hole positions on the traditional flyback transformer are fixed and cannot be adjusted as required. Therefore, it is very meaningful to improve the flyback transformer structure and propose a variable inductance flyback transformer structure. SUMMARY

[0003] The present application aims at solving the problems in the prior art.

[0004] To achieve the above-mentioned application purposes, the present application provides the following technical solutions.

[0005] The variable inductance flyback transformer structure is used to improve the above-mentioned problems.

[0006] The present application is specifically as follows.

[0007] The application relates to a flyback transformer body, a magnetic core is arranged on the middle part of the flyback transformer body, a main winding is fixedly installed on the inner wall of the middle part of the magnetic core, a secondary winding is sleeved on the outer wall of one side column of the magnetic core, a high-low air gap is arranged on the outer wall of the other side column of the magnetic core, a base is fixedly arranged on the bottom outer wall of the flyback transformer body, a sound insulation and noise reduction assembly is arranged on the top outer wall of the base, fixing plates are fixedly arranged on the bottom outer walls of the two sides of the base, and adjusting and mounting hole assemblies are arranged on the top outer walls of the fixing plates.

[0008] As a preferred technical scheme of the application, the high-low air gap is one or more of a stepped air gap and a slope air gap.

[0009] As a preferred technical scheme of the application, the main winding and the secondary winding are wrapped by a plurality of PCB boards.

[0010] As a preferred technical scheme of the application, the main winding and the secondary winding are wrapped by copper foil strips.

[0011] As a preferred technical scheme of the application, the outer walls of the main winding and the secondary winding are coated with silicone resin paint.

[0012] As a preferred technical scheme of the application, the sound insulation and noise reduction assembly comprises covering frames which are symmetrically sleeved on the outer walls of the two sides of the base, guide wheels are rotatably installed on the inner walls of the two ends of the covering frames, guide grooves are symmetrically arranged on the outer walls of the two sides of the base, the guide wheels are clamped in the guide grooves, a covering air bag is connected to the outer wall between the covering frames, a gas pump is installed on the top outer wall of the flyback transformer body, an air inlet pipe is arranged in communication between the gas outlet end of the gas pump and the air inlet end of the covering air bag, a mounting box is installed on one side outer wall of the base, a circuit board is installed on the bottom inner wall of the mounting box, a PLC controller, a noise collection module, a noise opposite operation module and a sound wave playing module are distributed and installed on the top outer wall of the circuit board, a microphone and a loudspeaker are distributed and installed on one side outer wall of the mounting box, the electric output end of the microphone is connected with the electric input end of the noise collection module, the electric output end of the sound wave playing module is connected with the electric input end of the loudspeaker, a gas discharge pipe is arranged in communication with one side outer wall of the covering air bag, one end of the gas discharge pipe penetrates into the inside of the mounting box, and a pressure relief valve is installed on one end of the gas discharge pipe.

[0013] As a preferred technical scheme of the present application, the adjusting mounting hole assembly comprises symmetrical moving grooves opened on the top outer wall of the fixing plate, moving blocks are arranged in the moving grooves, mounting screw holes are formed through the top outer wall of each moving block, sliding blocks are fixed on the two side outer walls of each moving block, sliding grooves are formed on the two side inner walls of each moving groove, a transmission screw hole is formed through the outer wall of one end of the sliding block inserted into one end of the sliding groove, a rotating shaft is arranged in the transmission screw hole, the two ends of the rotating shaft are rotatably connected with the two ends of the sliding groove, first threads are formed on the outer wall of the rotating shaft, the first threads are screw-connected with the transmission screw hole, and a hand wheel is fixed on one end of the rotating shaft protruding out of the fixing plate.

[0014] As a preferred technical scheme of the present application, the air suction end of the air pump is through-mounted with an air filter element.

[0015] As a preferred technical scheme of the present application, the air inlet pipe and the air outlet pipe are both telescopic flexible pipes.

[0016] As a preferred technical scheme of the present application, the end outer wall of the base is provided with a pressing groove corresponding to the pressing nut.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] In the scheme of the present application:

[0019] The variable inductance flyback transformer structure opens a stepped air gap or a slope air gap on the outer wall of the magnetic core column or side column. According to Ampere's law, the magnetic flux in the magnetic core is determined by the magnetic field strength, that is, by the current in the magnetic field. When the magnetic core approaches saturation, the inductance value decreases. The stepped air gap or the slope air gap makes the saturation effect in the magnetic core gradually advance from the narrow side to the wide side, so that the magnetic motive force of the magnetic core is large under low-voltage input, the saturation advances to the wide side more, and the inductance of the flyback transformer is reduced. Under high-voltage input, the magnetic motive force of the flyback transformer is small, and the narrow side of the air gap is saturated or unsaturated, so that the inductance of the flyback transformer is reduced very little or even not reduced. The variable inductance optimization design of the flyback transformer structure is realized. The flyback transformer works in continuous mode or discontinuous mode, and the working mode is determined by the inductance of the flyback transformer.

[0020] The flyback transformer structure is provided with the sound insulation and noise reduction assembly, which can inflate the air bag 704 inside the cover, expand to cover the flyback transformer, play a role in dustproof and sound insulation of the flyback transformer working, and has the ability of active noise reduction. The adjusting mounting hole assembly can adjust the position of the mounting screw hole on the flyback transformer according to the needs, which is beneficial to the positioning and installation of the flyback transformer in different environments.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A perspective view of the variable inductance flyback transformer structure provided in the present application;

[0022] Figure 2 A schematic view of one type of magnetic core structure in the variable inductance flyback transformer structure provided in the present application;

[0023] Figure 3 A schematic view of another type of magnetic core structure in the variable inductance flyback transformer structure provided in the present application;

[0024] Figure 4 An enlarged view of the structure of area A in the variable inductance flyback transformer structure provided in the present application;

[0025] Figure 5 A perspective view of the variable inductance flyback transformer structure provided in the present application;

[0026] Figure 6 An enlarged view of the structure of area B in the variable inductance flyback transformer structure provided in the present application;

[0027] Figure 7 An enlarged view of the structure of area C in the variable inductance flyback transformer structure provided in the present application.

[0028] Indications in the drawings:

[0029] 1, flyback transformer main body; 2, magnetic core; 3, main winding; 4, secondary winding; 5, high-low air gap; 51, slope air gap; 52, stepped air gap; 6, base; 7, sound insulation and noise reduction assembly; 8, fixing plate; 9, adjusting and mounting hole assembly; 10, air filter element;

[0030] 701, cover frame; 702, guide wheel; 703, guide groove; 704, cover air bag; 705, air pump; 706, air inlet pipe; 707, mounting box; 708, circuit board; 709, PLC controller; 710, noise collection module; 711, noise opposite operation module; 712, offset sound wave playing module; 713, microphone; 714, loudspeaker; 715, air release pipe; 716, pressure relief valve;

[0031] 901, moving groove; 902, moving block; 903, mounting screw hole; 904, sliding block; 905, sliding groove; 906, transmission screw hole; 907, rotating shaft; 908, first thread; 909, hand wheel; 910, second thread; 911, pressing nut. DETAILED DESCRIPTION

[0032] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0033] Therefore, the following detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but merely represents some embodiments of the application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0034] It should be noted that the embodiments in the present application and the features and technical solutions in the embodiments can be combined with each other without conflict.

[0035] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0036] In the description of the present application, it should be noted that the terms "upper", "lower" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, or the orientation or positional relationship commonly understood by those skilled in the art, such terms are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0037] As Figure 1 — Figure 7As shown in the figure, the embodiment proposes a variable inductance flyback transformer structure, including a flyback transformer body 1, a magnetic core 2 is arranged on the outer wall of the middle part of the flyback transformer body 1, a main winding 3 is fixedly installed on the inner wall of the middle part of the magnetic core 2, a secondary winding 4 is sleeved on the outer wall of one side column of the magnetic core 2, a high-low air gap 5 is arranged on the outer wall of the other side column of the magnetic core 2, the high-low air gap 5 is one or more of a stepped air gap 52 and an inclined air gap 51, a base 6 is fixedly arranged on the outer wall of the bottom of the flyback transformer body 1, a sound insulation and noise reduction assembly 7 is arranged on the outer wall of the top of the base 6, a fixing plate 8 is fixedly arranged on the outer wall of the bottom of the two sides of the base 6, and an adjusting mounting hole assembly 9 is arranged on the outer wall of the top of the fixing plate 8. The flyback transformer body 1 in the variable inductance flyback transformer structure is a reference of the prior art. According to Ampere's law, the magnetic flux in the magnetic core 2 is determined by the magnetic field strength, that is, determined by the current in the magnetic field. When the magnetic core 2 approaches saturation, the inductance value decreases. The high-low air gap 5 (stepped air gap 52 or inclined air gap 51) is used to make the saturation effect in the magnetic core 2 start from the narrow side of the air gap and gradually advance to the wide side, so that the magnetic motive force of the magnetic core 2 is large under the condition of low-voltage input, the saturation advances to the wide side is large, and the inductance of the flyback transformer is reduced. Under the condition of high-voltage input, the magnetic motive force of the flyback transformer is small, and the narrow side of the air gap is saturated or unsaturated, so that the inductance of the flyback transformer is reduced little or even not reduced, and the optimization design of the variable inductance flyback transformer structure is realized.

[0038] As Figure 1 , Figure 2 and Figure 3 shown, as a preferred embodiment, on the basis of the above-mentioned mode, further, the main winding 3 and the secondary winding 4 are composed of a multi-layer PCB winding, the PCB winding is manufactured by a printing process, and the parameter consistency is high, which can ensure the stable performance of the inductance of the flyback transformer. The PCB has heat dissipation capacity, and the multi-layer structure of the PCB winding increases the heat dissipation area and improves the heat dissipation performance of the flyback transformer.

[0039] As Figure 1 , Figure 2 and Figure 3 shown, as a preferred embodiment, on the basis of the above-mentioned mode, further, the main winding 3 and the secondary winding 4 are composed of a copper foil tape winding, the copper in the copper foil tape winding has good electrical conductivity, the copper foil tape is thin and wide, which can provide low resistance and reduce energy loss; the wide copper foil tape has a large surface area, which is conducive to heat dissipation, improves the heat dissipation capacity of the winding, and improves the heat dissipation performance of the flyback transformer.

[0040] As Figure 1 , Figure 2 and Figure 3As shown, as a preferred embodiment, on the basis of the above-mentioned mode, further, the outer wall of the main winding 3 and the secondary winding 4 is coated with silicone resin paint, the silicone resin has very high resistivity, which provides reliable insulation protection for the winding, and has good resistance to various chemicals such as acid, alkali and salt, so that the flyback transformer can maintain its insulation performance in harsh chemical environment. The silicone resin insulation layer has a certain flexibility, which effectively avoids the problem of cracking and damage of the flyback transformer winding insulation layer.

[0041] As Figure 1 , Figure 4 and Figure 5As shown, the sound insulation and noise reduction assembly 7 comprises a cover frame 701 symmetrically sleeved on the outer walls of both sides of the base 6, guide wheels 702 are rotatably installed on the inner walls of both ends of the cover frame 701, guide grooves 703 are symmetrically formed on the outer walls of both sides of the base 6, and the guide wheels 702 are clamped in the guide grooves 703, a cover air bag 704 is connected to the outer wall between the cover frames 701, an air pump 705 is installed on the top outer wall of the flyback transformer body 1, a gas inlet pipe 706 is in communication between the gas inlet end of the air pump 705 and the gas inlet end of the cover air bag 704, an installation box 707 is installed on one side outer wall of the base 6, a circuit board 708 is installed on the bottom inner wall of the installation box 707, a PLC controller 709, a noise collection module 710, a noise opposite operation module 711 and a cancellation sound wave playing module 712 are distributed and installed on the top outer wall of the circuit board 708, a microphone 713 and a loudspeaker 714 are distributed and installed on one side outer wall of the installation box 707, the electrically conductive output end of the microphone 713 is connected to the electrically conductive input end of the noise collection module 710, the electrically conductive output end of the cancellation sound wave playing module 712 is connected to the electrically conductive input end of the loudspeaker 714, a gas discharge pipe 715 is in communication with one side outer wall of the cover air bag 704, one end of the gas discharge pipe 715 penetrates into the interior of the installation box 707, and a pressure relief valve 716 is installed at one end of the gas discharge pipe 715. In the use process of the flyback transformer, the compressed air generated by the operation of the air pump 705 can be input into the interior of the cover air bag 704 through the gas inlet pipe 706, the cover air bag 704 inflates and expands to drive the cover frame 701 to expand under the cooperation of the guide wheels 702 and the guide grooves 703, thereby playing a role of dustproof and sound insulation of the flyback transformer in operation. At the same time, the PLC controller 709 controls the noise collection module 710 to work, the microphone 713 collects the noise of the flyback transformer in operation, the collected noise data is transmitted into the noise opposite operation module 711, and the sound wave data with the same amplitude and opposite phase of the noise is obtained by operation, the sound wave data is transmitted to the loudspeaker 714 for playing by the cancellation sound wave playing module 712, thereby playing a role of noise cancellation of the flyback transformer in operation, and playing a role of active noise reduction of the flyback transformer. The above-mentioned cover air bag 704 continuously injects air, when the air pressure in the cover air bag 704 reaches the threshold of the pressure relief valve 716, the excess air is discharged through the gas discharge pipe 715 and input into the installation box 707, thereby playing a role of circuit blowing and heat dissipation in the installation box 707;

[0042] Further, the air suction end of the air pump 705 is penetrated and installed with an air filter element 10, and the air suction of the air pump 705 is filtered through the air filter element 10;

[0043] Further, the gas inlet pipe 706 and the gas discharge pipe 715 are both a kind of telescopic hose, which is beneficial to the gas transmission of the gas inlet pipe 706 and the gas discharge pipe 715 in the telescopic adjustment process of the cover air bag 704;

[0044] As Figure 1 , Figure 6 andFigure 7 As shown, the adjusting mounting hole assembly 9 comprises moving grooves 901 symmetrically arranged on the top outer wall of the fixing plate 8, moving blocks 902 arranged in the moving grooves 901, mounting screw holes 903 arranged on the top outer wall of the moving blocks 902, sliding blocks 904 fixed on the two side outer walls of the moving blocks 902, sliding grooves 905 arranged on the two side inner walls of the moving grooves 901, transmission screw holes 906 arranged on the outer wall of one end of the sliding grooves 905, rotating shafts 907 penetrating through the transmission screw holes 906, the two ends of the rotating shafts 907 being rotatably connected with the two ends of the sliding grooves 905, first threads 908 arranged on the outer wall of the rotating shafts 907, the first threads 908 being screw-connected with the transmission screw holes 906, hand wheels 909 fixed on one end of the outer wall of the fixing plate 8 and penetrating through the rotating shafts 907, second threads 910 arranged on the end outer wall of the rotating shafts 907, and pressing nuts 911 screw-connected with the outer wall of the second threads 910. During the fixing and mounting of the flyback transformer by means of bolts, the rotating shafts 907 can be driven to rotate by rotating the hand wheels 909, the sliding blocks 904 can be fed to move in the sliding grooves 905 under the cooperation of the first threads 908 and the transmission screw holes 906, the moving blocks 902 can be driven to move along the moving grooves 901, and thus the position adjustment of the mounting screw holes 903 at the two ends of the flyback transformer can be realized. After the position adjustment of the mounting screw holes 903, the pressing nuts 911 are tightened on the second threads 910, the rotation of the rotating shafts 907 is braked, and thus the fixing of the position adjustment of the mounting screw holes 903 is realized, which is beneficial to the positioning and mounting of the flyback transformer in different environments.

[0045] Further, the end outer wall of the base 6 is provided with a pressing groove corresponding to the pressing nut 911, and the end of the pressing nut 911 is pressed in the pressing groove during the tightening of the pressing nut 911, which ensures the braking of the rotating shafts 907 and the fixing of the position adjustment of the mounting screw holes 903.

[0046] Specifically, the variable inductance flyback transformer structure in operation / use: the variable inductance flyback transformer structure is provided with a high-low air gap 5 (step air gap 52 or slope air gap 51) on the outer wall of the column or side column of the magnetic core 2 of the basic flyback transformer structure, and in the use of the flyback transformer in the photovoltaic and photovoltaic energy storage power generation system, in the case of low voltage input of PV, the excitation magnetic motive force is relatively large, the wider air gap is also saturated, and the inductance of the flyback transformer is reduced, while in the case of high voltage input of PV, the excitation magnetic motive force of the flyback transformer is relatively small, and the narrower side of the air gap is saturated or unsaturated, so that the inductance of the flyback transformer is reduced very little or even not reduced, realizing the optimal design of the variable inductance flyback transformer structure; in the use of the flyback transformer, the compressed air generated by the air pump 705 can be input to the inside of the covering air bag 704 through the air inlet pipe 706, the covering air bag 704 is inflated and expanded to drive the covering frame 701 to expand under the cooperation of the guide wheel 702 and the guide groove 703, which plays a role of dustproof and sound insulation of the flyback transformer in operation, and at the same time, the noise collection module 710 is controlled to work through the PLC controller 709, the flyback transformer working noise is collected through the microphone 713, the collected noise data is transmitted to the noise phase opposite operation module 711, and the sound wave data with the same amplitude and opposite phase of the noise is obtained through operation, the sound wave data is transmitted to the loudspeaker 714 for playing through the sound wave offset playing module 712, which plays a role of flyback transformer working noise offset, and plays a role of flyback transformer active mute noise reduction, the covering air bag 704 is continuously inflated, and when the air pressure in the covering air bag 704 reaches the threshold of the pressure relief valve 716, the excess air is discharged into the mounting box 707 through the air outlet pipe 715, which plays a role of air blowing and heat dissipation of the circuit in the mounting box 707; during the fixing and installation of the flyback transformer by bolts, the rotating shaft 907 can be rotated by rotating the hand wheel 909, and under the cooperation of the first screw thread 908 and the transmission screw hole 906, the sliding block 904 can be fed and moved in the sliding groove 905, so as to drive the moving block 902 to move along the moving groove 901, thereby realizing the adjustment of the positions of the mounting screw holes 903 on both sides of the flyback transformer, and after the positioning and adjustment of the mounting screw holes 903, the second screw thread 910 is tightened to press the nut 911, thereby realizing the rotation braking of the rotating shaft 907, and realizing the fixing of the position adjustment of the mounting screw holes 903, which is beneficial to the positioning and installation of the flyback transformer in different environments.

[0047] The above embodiments are only used to illustrate the technical solutions described in the present application and not to limit the present application. Although the present application has been described in detail with reference to the above embodiments, the present application is not limited to the above specific embodiments, and any modification or equivalent replacement of the present application; all technical solutions and improvements without departing from the spirit and scope of the application are covered in the scope of claims of the present application.

Claims

1. A variable inductance flyback transformer structure, characterized by, The application relates to a flyback transformer body (1) which is provided with a magnetic core (2) on the body, a main winding (3) is fixedly installed on the inner wall of the middle part of the magnetic core (2), a secondary winding (4) is sleeved on the outer wall of one side edge column of the magnetic core (2), a high-low air gap (5) is formed on the outer wall of the other side edge column of the magnetic core (2), a base (6) is fixed on the bottom outer wall of the flyback transformer body (1), a sound insulation and noise reduction assembly (7) is arranged on the top outer wall of the base (6), fixing plates (8) are fixed on the bottom outer walls of the two sides of the base (6), and an adjusting mounting hole assembly (9) is arranged on the top outer wall of the fixing plate (8). The high-low air gap (5) is one or more of a stepped air gap (52) and a slope air gap (51). The adjusting mounting hole assembly (9) comprises moving grooves (901) symmetrically formed on the top outer wall of the fixing plate (8), moving blocks (902) arranged in the moving grooves (901), mounting screw holes (903) penetratingly formed in the top outer walls of the moving blocks (902), sliding blocks (904) fixed on the two side outer walls of the moving blocks (902), sliding grooves (905) formed in the two side inner walls of the moving grooves (901), transmission screw holes (906) penetratingly formed in the outer walls of one end of the sliding blocks (904) inserted into the sliding grooves (905), rotating shafts (907) penetratingly arranged in the transmission screw holes (906), the two ends of the rotating shafts (907) being rotationally connected with the two end inner walls of the sliding grooves (905), first threads (908) formed in the outer walls of the rotating shafts (907), the first threads (908) being screw-connected with the transmission screw holes (906), hand wheels (909) fixed on one end of the rotating shafts (907) penetratingly arranged outside the fixing plate (8), and second threads (910) formed in the end outer walls of the rotating shafts (907), the outer walls of the second threads (910) being screw-connected with pressing nuts (911).

2. A variable inductance flyback transformer structure according to claim 1, wherein, The main winding (3) and the secondary winding (4) are wrapped by the multilayer PCB.

3. A variable inductance flyback transformer structure according to claim 1, wherein, The main winding (3) and the secondary winding (4) are wrapped by copper foil strips.

4. A variable inductance flyback transformer structure according to claim 1, wherein, The outer walls of the main winding (3) and the secondary winding (4) are coated with silicone resin paint.

5. A variable inductance flyback transformer structure as defined in claim 1, wherein, The sound insulation and noise reduction assembly (7) comprises cover frames (701) symmetrically sleeved on the outer walls of both sides of the base (6), guide wheels (702) rotatably installed on the inner walls of both ends of the cover frames (701), guide grooves (703) symmetrically formed on the outer walls of both sides of the base (6), the guide wheels (702) clamped in the guide grooves (703), a cover air bag (704) connected to the outer wall between the cover frames (701), an air pump (705) installed on the top outer wall of the flyback transformer body (1), an air inlet pipe (706) in communication between the air outlet end of the air pump (705) and the air inlet end of the cover air bag (704), a mounting box (707) installed on one side outer wall of the base (6), a circuit board (708) installed on the bottom inner wall of the mounting box (707), a PLC controller (709), a noise collection module (710), a noise opposite operation module (711) and a counteracting sound wave playing module (712) distributed and installed on the top outer wall of the circuit board (708), a microphone (713) and a loudspeaker (714) distributed and installed on one side outer wall of the mounting box (707), the electrically connected between the electrically output end of the microphone (713) and the electrically input end of the noise collection module (710), the electrically connected between the electrically output end of the counteracting sound wave playing module (712) and the electrically input end of the loudspeaker (714), a gas discharge pipe (715) in communication with one side outer wall of the cover air bag (704), one end of the gas discharge pipe (715) penetrating into the inside of the mounting box (707), and a pressure relief valve (716) installed on one end of the gas discharge pipe (715).

6. A variable inductance flyback transformer structure according to claim 5, wherein, The air suction end of the air pump (705) is provided with an air filter (10).

7. A variable inductance flyback transformer structure according to claim 5, wherein, The air inlet pipe (706) and the gas discharge pipe (715) are both telescopic flexible pipes.

8. A variable inductance flyback transformer structure according to claim 5, wherein, Corresponding pressure holding nuts (911) are arranged on the end outer walls of the base (6).

Images