CN114678198A - Special high-frequency resonance transformer for wire-wound wire framework and plate-type ozone generator - Google Patents
Special high-frequency resonance transformer for wire-wound wire framework and plate-type ozone generator Download PDFInfo
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- CN114678198A CN114678198A CN202210225621.4A CN202210225621A CN114678198A CN 114678198 A CN114678198 A CN 114678198A CN 202210225621 A CN202210225621 A CN 202210225621A CN 114678198 A CN114678198 A CN 114678198A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2876—Cooling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/323—Insulation between winding turns, between winding layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/346—Preventing or reducing leakage fields
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F2027/348—Preventing eddy currents
Abstract
The invention discloses a coil winding framework and a high-frequency resonance transformer special for a plate type ozone generator, wherein the coil winding framework comprises a framework body, the upper end and the lower end of the framework body are respectively provided with an insulation interlayer of a coil to a magnetic core, the middle part of the framework body is provided with a plurality of coil interlayer insulation interlayers, and the middle part of the framework body is provided with a plurality of coil winding guide grooves; this special high frequency resonance transformer of board-like ozone generator includes the magnetic core, the cover of magnetic core left end is equipped with elementary solenoid bobbin, the cover of magnetic core right-hand member is equipped with secondary solenoid bobbin, elementary solenoid bobbin with secondary solenoid bobbin's structure all with solenoid bobbin is unanimous. The coil winding framework and the high-frequency resonance transformer special for the plate-type ozone generator can solve the problems of serious heating, leakage inductance disturbance and high failure rate of the existing transformer, thereby achieving the purposes of reducing heating, stabilizing, assembling components, having simple process and easy large-scale production and ensuring the consistency of transformer parameters.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a wire-wound wire framework and a high-frequency resonance transformer special for a plate-type ozone generator.
Background
The ozone generator is based on the principle that oxygen is ionized to generate electrochemical reaction through a high-voltage discharge technology, so that ozone is generated. At present, the most efficient ozone generators all adopt a dielectric barrier discharge technology, and have energy efficiency advantages compared with a UV method and an electrolytic method. The ozone generator of the dielectric barrier discharge technology mainly comprises a tubular ozone generator and a plate-type ozone generator, wherein the tubular ozone generator adopts glass as a barrier medium, the working frequency is lower, the ozone output concentration is low, and the unit yield and the power consumption of ozone are high. The blocking medium adopted by the plate-type ozone generator adopts high-purity alumina ceramics, can operate at higher frequency, has high ozone output concentration and low ozone unit yield and power consumption, and is the latest generation of high-efficiency ozone generator technology.
The plate type ozone generator adopts a high-frequency alternating current discharge technology, and the discharge voltage is usually 5600Vpp (alternating current peak-to-peak value) to 12000 Vpp. The magnitude of the discharge voltage is related to the structure and material of the discharge chamber of the ozone generator, wherein the electrical parameters and thickness of the barrier dielectric are key factors. Research shows that the higher the working frequency of the ozone generator is, the higher the ozone output concentration is, the lower the comprehensive energy consumption is, and the higher the efficiency is. In order to meet the discharge requirement of the ozone generator, the ozone generator is required to work in a resonance state, and the ozone generator is a capacitive load, so that a high-power high-voltage resonance inductor is required in an ozone generator system. In order to make the ozone generator operate in a high-frequency state, the power supply of the ozone generator generally adopts an AC-DC-AC topological structure, namely a rectification inversion mode. The frequency of the power supply output power signal is adjusted through the fully-controlled inverter bridge, so that the discharge chamber works in a resonance state, and the working efficiency of the system is improved. The ozone generator works in a high-voltage state, and in order to ensure the reliable operation of a system, a special transformer needs to be designed between the output of a power inverter and the ozone generator, on one hand, the low working voltage of the inverter is isolated from the high working voltage of the ozone generator, on the other hand, an inductive element is introduced into the output of the inverter by utilizing the equivalent inductance of the transformer, the switching stress of a switching tube of the inverter is reduced, and the soft switching is realized, so that the inverter can work in a higher-frequency state.
At present, two schemes of a transformer and a resonance inductor of a plate-type ozone generator power supply system are provided, wherein the transformer and the inductor are separately designed, and the transformer and the inductor are integrally designed. In the scheme of separately designing the transformer and the inductor, the transformer is responsible for voltage isolation and amplitude improvement, and the inductor is responsible for generating high voltage by resonance. The transformer and the inductor work in a high-voltage state, and bear the same current due to the series connection relationship, namely the transformer and the inductor are at the same power level and insulation level, so that the material cost and the installation volume of the system are greatly increased, and the fault point of the system is also increased. The transformer and reactor integrated design scheme utilizes leakage inductance of the transformer as resonance inductance, so that external series inductors are reduced, the transformer excitation inductance is responsible for voltage isolation and amplitude improvement, and secondary leakage inductance of the transformer resonates with a discharge chamber to generate high voltage. The scheme has the advantages of saving materials and reducing the volume of equipment, and has fewer fault points of the system due to the omission of the series inductor. However, the ozone generator transformer has complicated parasitic parameters, high control difficulty of leakage inductance and parasitic capacitance, and has prominent problems of transformer heating, insulation breakdown and the like caused by multi-order resonance, electromagnetic eddy current and the like caused by integration. Research shows that the high failure rate of the existing integrated transformer is always one of the most main problems of the ozone generator system.
Disclosure of Invention
Aiming at the technical problems in the related art, the invention provides a wire-wound wire framework and a special high-frequency resonance transformer for a plate-type ozone generator, which can overcome the defects in the prior art.
In order to achieve the technical purpose, the technical scheme of the invention is realized as follows:
the utility model provides a wire wrap bobbin, its characterized in that, includes the skeleton body, the upper end and the lower extreme of skeleton body all are equipped with the insulating interlayer of solenoid to the magnetic core, the middle part of skeleton body is equipped with insulating interlayer between a plurality of solenoid layers, the lower extreme of skeleton body is equipped with solenoid inlet wire guide slot, the upper end of skeleton body is equipped with solenoid outlet wire guide slot, the middle part of skeleton body is equipped with a plurality of solenoid wire winding guide slots.
Furthermore, the thickness of the insulating interlayer of the coil pair magnetic core is 5 mm.
Furthermore, the thickness of the insulating interlayer between the coil layers is 2.5 mm.
Furthermore, a plurality of interlayer lead guide grooves are formed in the insulating interlayer between the coil layers.
Furthermore, the number of the insulating interlayers between the coil layers is 7, and the number of the coil winding guide grooves is 6.
The high-frequency resonance transformer is characterized by comprising a magnetic core, wherein the magnetic core is a U-shaped ferrite, the left end of the magnetic core is sleeved with a primary coil bobbin, the primary coil bobbin is sleeved with a primary coil, the right end of the magnetic core is sleeved with a secondary coil bobbin, the secondary coil bobbin is sleeved with a secondary coil, the primary coil bobbin and the secondary coil bobbin are consistent in structure with the coil bobbin, the top surface of the magnetic core is fixed with a top pressing plate through a fastening bolt, the bottom surface of the magnetic core is fixed with a bottom pressing plate through a mounting fixing bolt, the front surfaces of the left end and the right end of the top pressing plate are respectively connected with the back surfaces of an input connection stand column and an output connection stand column through a plurality of connection stand column fixing screws, the front faces of the left end and the right end of the bottom pressing plate are respectively connected with the back faces of the input end connection stand column and the output end connection stand column lower end through a plurality of connection stand column fixing screws, input end connection bolts are arranged at the upper end and the lower end of the input end connection stand column, and output end connection bolts are arranged at the upper end and the lower end of the output end connection stand column.
Furthermore, the bottom surface of top clamp plate is equipped with magnetic core shock attenuation draw-in groove, be equipped with magnetic core buffering protection silica gel pad in the magnetic core shock attenuation draw-in groove.
Furthermore, the wire of the primary coil adopts 0.2 × 250 standard litz wire, the cross-sectional area of the wire of the primary coil is 7.85 square millimeters, the wire of the secondary coil adopts 0.2 × 100 standard litz wire, and the cross-sectional area of the wire of the secondary coil is 3.1 square millimeters.
Furthermore, the surfaces of the conducting wires of the primary coil and the secondary coil are both provided with polytetrafluoroethylene coatings.
Further, the length of the mounting and fixing bolt is 30mm greater than the thickness of the bottom pressing plate.
The invention has the beneficial effects that: (1) the special U-shaped magnetic core structure design solves the problem of leakage inductance disturbance caused by different output powers and frequency working point differences of the transformer, avoids the drift of resonance points, enhances the robustness of power supply system control, overcomes the output instability of an ozone generator, improves the stability of the ozone generator system, reduces the unit ozone power consumption and improves the ozone output concentration by adopting the special framework design of U-shaped magnetic core and solenoid layering aiming at the problem that the leakage inductance value of the U-shaped magnetic core of the special high-frequency resonance transformer for ozone is difficult to adjust and the heat productivity of the E-shaped magnetic core is large;
(2) The invention relates to a winding framework design of a transformer coil, which adopts a layered winding mode, designs a unique winding framework structure, has large current and serious heating of a primary side of a transformer, adopts a layered framework, increases the effective heat dissipation area of the coil, reduces the temperature rise of the coil, has high output voltage of transformer secondary transformation, and can reach the peak value to 12000V, adopts a layered framework, facilitates the control of the leakage inductance value of the transformer, has larger design range of the leakage inductance of the transformer, has better consistency of the leakage inductance design of the same winding method, small parameter dispersion, zero drift and temperature drift of the leakage inductance value, has better working reliability and stability of an ozone discharge chamber, has high ozone output concentration and lower energy consumption, effectively reduces the voltage difference between layers, and reduces the interlayer insulation breakdown risk The interlayer parasitic capacitance of the secondary side is minimized, the high-order resonant eddy current of the transformer is reduced, the heating and impact-resistant response capability of the transformer is reduced, the leakage inductance value of the transformer can be accurately adjusted through the winding turns of different layers of the layered framework, the layered framework can be matched with an ozone discharge chamber more easily, and the purpose of high-efficiency work is achieved;
(3) The transformer of the invention has good high-frequency performance, reduces power consumption, can save 21 percent of energy, has smaller heat generation and more stable operation, the heat generation of the high-frequency resonance transformer special for ozone is the primary reason for inducing transformation faults, particularly for ferrite materials, the heat generation is more dangerous, because the Curie point of the ferrite materials is lower, if the temperature of the ferrite approaches or exceeds the Curie point due to the heat generation, the ferrite materials lose magnetism instantly, so that the inductance of a transformer coil is reduced to 0, thereby causing instant short circuit, burning out a driving device and causing serious faults, the transformer of the invention adopts a U-shaped magnetic core with low heat productivity, solves the problem of leakage inductance regulation through a special structure framework, simultaneously increases the heat dissipation area of a transformer coil, and a layered framework forms a diversion air duct to be more beneficial to the derivation of the heat generation of the transformer, the transformer has the advantages that the parasitic capacitance (turn-to-turn capacitance, interlayer capacitance and primary and secondary coupling capacitance) of the transformer coil is reduced to the minimum by the layered design of the transformer framework, the hysteresis loss and the eddy current loss of the transformer are reduced, the heating of the transformer is reduced, the litz wire is adopted for the transformer coil, the current carrying capacity of a lead is improved, the copper loss of the transformer is reduced, the heating is reduced, and the polytetrafluoroethylene coating of the litz wire not only improves the interlayer insulation and the turn-to-turn insulation of the coil, but also has better heat dissipation characteristic and reduces the temperature rise of the transformer compared with the prior art of epoxy casting the coil and insulating paper;
(4) Compared with the existing ozone special high-frequency resonance transformer technology, the transformer structure design of the invention adopts a component assembly mode, each component adopts a die sinking process, the consistency is good, the error is small, the coil winding process is simple, the electrical connection is convenient, the process can be divided into process sections and parallel processing, the production cycle of the transformer is shortened, each process section can be subjected to standardized production and assembly line processing, the parameter difference caused by human factors is reduced, the consistency of the transformer is ensured, special processes such as epoxy casting, coil cushion layers and primary and secondary coupling of the transformer are not needed in the production of the transformer, the process is simple, the technical threshold of the production of the transformer is reduced, the large-scale production is easier to realize, and the consistency of the parameters of the transformer is easy to ensure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a high-frequency resonance transformer dedicated to a plate-type ozone generator according to an embodiment of the invention;
FIG. 2 is a schematic diagram of an assembly structure of a high-frequency resonant transformer specially used for a plate-type ozone generator according to an embodiment of the invention;
FIG. 3 is a schematic diagram of a second assembly structure of the high-frequency resonant transformer for a plate-type ozone generator according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a third assembly structure of the special high-frequency resonance transformer for the plate-type ozone generator according to the embodiment of the invention;
FIG. 5 is a first schematic structural view of a bobbin according to an embodiment of the present invention;
fig. 6 is a second schematic structural view of a winding bobbin according to an embodiment of the present invention;
in the figure: 1. the device comprises a primary coil, 2, a secondary coil, 3, a fastening bolt, 4, an input end connection bolt, 5, an output end connection bolt, 6, a mounting and fixing bolt, 7, an input end connection upright post, 8, an output end connection upright post, 9, a bottom pressing plate, 10, a top pressing plate, 11, a connection upright post fixing screw, 12, a magnetic core damping clamping groove, 13, a magnetic core buffering and protecting silica gel pad, 14, an insulation interlayer of the coil to the magnetic core, 15, an interlayer insulation interlayer of the coil, 16, a coil incoming line guide groove, 17, a coil outgoing line guide groove, 18, a coil winding guide groove, 19, an interlayer lead guide groove, 20, a primary coil winding framework, 21, a secondary coil winding framework, 22 and a magnetic core.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived from the embodiments of the present invention by a person skilled in the art, are within the scope of the present invention.
As shown in fig. 5 to 6, the coil winding framework according to the embodiment of the present invention is characterized by comprising a framework body, wherein the upper end and the lower end of the framework body are both provided with insulating interlayers 14 of a coil to a magnetic core, the middle part of the framework body is provided with a plurality of insulating interlayers 15 between coil layers, the lower end of the framework body is provided with a coil incoming guide groove 16, the upper end of the framework body is provided with a coil outgoing guide groove 17, and the middle part of the framework body is provided with a plurality of coil winding guide grooves 18.
The thickness of the insulating interlayer 14 of the coil pair magnetic core is 5 mm.
The thickness of the inter-coil insulation interlayer 15 is 2.5 mm.
The plurality of coil interlayer insulating interlayers 15 are all provided with interlayer lead guide grooves 19.
The number of the inter-coil insulation interlayers 15 is 7, and the number of the coil winding guide grooves 18 is 6.
As shown in fig. 1 to 4, the high-frequency resonance transformer special for the plate-type ozone generator with the coil bobbin according to the embodiment of the present invention is characterized by comprising a magnetic core 22, wherein the magnetic core 22 is a U-shaped ferrite, the left end of the magnetic core 22 is sleeved with a primary coil bobbin 20, the primary coil bobbin 20 is sleeved with a primary coil 1, the right end of the magnetic core 22 is sleeved with a secondary coil bobbin 21, the secondary coil bobbin 21 is sleeved with a secondary coil 2, the structures of the primary coil bobbin 20 and the secondary coil bobbin 21 are identical to the coil bobbin, the top surface of the magnetic core 22 is fixed to a top pressing plate 10 through a fastening bolt 3, the bottom surface of the magnetic core 22 is fixed to a bottom pressing plate 9 through a mounting fixing bolt 6, and the front surfaces of the left end and the right end of the top pressing plate 10 are respectively fixed to an input end connection upright post 7 and an output end connection upright post 8 through a plurality of connection upright post fixing screws 11 The back connection of end, the front of bottom clamp plate 9 left end and right-hand member is through a plurality of stand fixed screws 11 of plugging into respectively with the input connect into stand 7 with the back connection of the stand 8 lower extreme is plugged into to the output, the upper end and the lower extreme of stand 7 that the input was plugged into all are equipped with input and plug into bolt 4, the upper end and the lower extreme of stand 8 that the output was plugged into all are equipped with output and plug into bolt 5.
The bottom surface of the top pressing plate 10 is provided with a magnetic core damping clamping groove 12, and a magnetic core buffering protection silica gel pad 13 is arranged in the magnetic core damping clamping groove 12.
The wire of the primary coil 1 adopts 0.2 × 250 standard litz wires, the sectional area of the wire of the primary coil 1 is 7.85 square millimeters, the wire of the secondary coil 2 adopts 0.2 × 100 standard litz wires, and the sectional area of the wire of the secondary coil 2 is 3.1 square millimeters.
The surfaces of the conducting wires of the primary coil 1 and the secondary coil 2 are both provided with polytetrafluoroethylene coatings.
The length of the mounting and fixing bolt 6 is 30mm greater than the thickness of the bottom pressing plate (9).
The working frequency of the transformer can reach 75kHz, which is higher than the working frequency of the existing integrated transformer of 10kHz, the transformer has small heat productivity, high insulating strength and simple and convenient leakage inductance value design, can be conveniently matched with different ozone discharge chambers, and the equivalent model parameters of the plate type ozone generator have very large changes according to the different working states of the discharge chambers, and are mainly expressed in the oxygen pressure, concentration and temperature of inlet air; the temperature, the ozone content and the working pressure of a discharge channel of the discharge chamber; the discharge state and the working frequency of the discharge chamber are different from each other, so that the electrical model parameters of the discharge chamber are obviously different, the requirements of boundary parameters are more strict for matching the optimal working state of the discharge chamber and the working characteristics of the high-efficiency transformer special for the plate-type ozone generator, and the design boundary of the transformer is determined according to the maximum working state of the discharge chamber.
According to the maximum range of the working frequency of a discharge chamber of an ozone generator, the loss of a magnetic core and the power grade, the magnetic core material of a transformer is determined to be ferrite PC40, the magnetic core structure is of a U-shaped structure, the magnetic leakage of the U-shaped ferrite magnetic core 22 of the transformer is small, the magnetocaloric heating is small, the temperature rise of the transformer can be effectively reduced, the heat dissipation requirement is reduced, the overall efficiency of the ozone generator is improved, a primary coil 1 and a secondary coil 2 of the transformer are respectively positioned on the left side and the right side of the magnetic core 22, and the coils are wound by adopting specially designed frameworks which are characterized in that epoxy resin with high insulating strength and high heat conduction property is adopted for casting molding, the frameworks adopt a multilayer structure, the interlayer insulating strength of the coils is increased, the dv/dt impact resistance of a lead wire is improved, interlayer lead guide grooves 19 are reserved among the layers, and the consistency of the maximum diameters of the coils during interlayer transition is ensured, the phenomenon of bulging of the outermost layer of the coil at the interlayer switching position is avoided, the insulation distance between the local position and the magnetic core is avoided, and the thicknesses of the top end and the bottom end of the framework are designed to ensure that the insulation strength between the coil and the magnetic core 22 is larger than 5 times of the actual work requirement value.
The transformer works in a high-frequency state, the skin effect of a winding coil wire is obvious, and the fact that 0.2 x 250 standard litz wires are adopted by a wire of a primary coil 1 of the transformer and the sectional area of the wire is 7.85 square millimeters is determined by combining power, frequency, heating and parasitic parameter factors of the transformer, and the fact that 0.2 x 100 standard litz wires are adopted by a wire of a secondary coil 3 of the transformer and the sectional area of the wire is 3.1 square millimeters; in order to ensure the corrosion resistance requirement of the working environment of the transformer of the ozone generator, the outer layer of the lead of the solenoid is provided with a polytetrafluoroethylene coating which resists ozone corrosion.
The framework adopts eight layers of guide grooves, the insulating ability between the layers of the coils is improved, the dispersion capacitance is reduced, the transformation ratio of the transformation is adjusted by adjusting the number of winding turns of each layer of the framework, the primary and secondary exciting inductance values and the leakage inductance value are adjusted, the transformer magnetic core 22 adopts U-shaped ferrite and is divided into an upper structure and a lower structure, the upper magnetic core structure and the lower magnetic core structure are positioned at the vertical center of the winding framework of the coils, the size of the magnetic path air gap of the transformer is conveniently adjusted by increasing and decreasing gaskets, and then the leakage inductance and exciting inductance parameters of the transformer are adjusted.
The primary coil 1 and the secondary coil 3 are wound by adopting bottom incoming wire and top outgoing wire, the thicknesses of gaskets between magnetic cores are determined according to the designed winding turns which are uniformly distributed among layers, when the leakage inductance of the transformer needs to be adjusted, the leakage inductance of the transformer can be finely adjusted by increasing and decreasing the winding turns of the middle layer of the framework and adjusting the turns (top end and bottom end) of the layers at two ends of the framework, the output leakage inductance of the transformer is conveniently controlled by matching with different ozone generators to work in an optimal state, a polytetrafluoroethylene coating litz wire is adopted, the diameter of a single-stranded wire of the litz wire is 0.2 square, the maximum working frequency can reach 200kHz, the skin effect is effectively reduced, the current carrying capacity of a lead is increased, the polytetrafluoroethylene coating increases the turn-to-turn insulation, and has the capacities of resisting dv/dt and di/dt impact and ozone corrosion, the transformer can work in a dangerous environment where ozone is leaked, and breakdown and ignition risks of the transformer under abnormal conditions are avoided.
For the convenience of understanding the above technical aspects of the present invention, the following detailed description will be given of the above technical aspects of the present invention in terms of specific modes of use.
When the special high-frequency resonance transformer for the plate-type ozone generator is used specifically, the special high-frequency resonance transformer for the plate-type ozone generator is arranged on a transformer fixing support, a fixing bolt 6 is fastened and arranged to ensure that the transformer is reliably arranged and fixed, the output positive electrode of a special power supply for the ozone discharge chamber is connected to the positive electrode of an input end connecting bolt 4, the negative electrode of the power supply is connected to the negative electrode of the input end connecting bolt 4, the positive electrode of an output end connecting bolt 5 is connected to the positive electrode of the ozone discharge chamber, the negative electrode of the output end connecting bolt 5 is connected to the negative electrode of the discharge chamber, a gas circuit and a water circuit of the discharge chamber are connected, an ozone generator control system is adjusted to ensure that parts except the power supply work normally, the power supply of the ozone generator is electrified through the control system, the oxygen channel is opened for purging for 15 minutes to thoroughly remove moisture and foreign matters in the discharge chamber, a refrigerator is opened to enable a refrigerant to enter the discharge chamber, and air in the channel is fully evacuated, adjusting the frequency and power output of the power supply of the discharge chamber to gradually reach the rated working voltage, observing the ozone concentration rhizosphere gas flow through an ozone concentration detector arranged on the ozone reactor, and calculating the ozone yield and the unit power consumption.
By using the transformer, the maximum ozone output concentration of a 300g/h ozone generator discharge chamber is 20.4% wt, the output yield at the concentration of 10% wt is 365g/h, and the unit power consumption is 5.65w/g, compared with the transformer adopting the prior art, the maximum output concentration of the ozone generator is improved by about 52%, and the output yield at the concentration of 10% wt is improved by 18.4% -21.7%; the unit power consumption of rated output is reduced by 42% under 10% wt concentration, when the temperature rise of the transformer working at 30%, 65% and 110% load is respectively 9 ℃, 18 ℃ and 25 ℃, the temperature rise is superior to that of the transformer in the prior art, namely 24 ℃, 47 ℃ and 75 ℃, and the transformer can save energy by 21.4% compared with the transformer in the prior art through determination, which shows that the transformer in the invention has good stability, low power consumption, good use value and economic value.
The transformer of the invention has the following beneficial effects:
(1) the special U-shaped magnetic core structure design solves the problem of leakage inductance disturbance caused by different output powers and frequency working point differences of the transformer, avoids the drift of resonance points, enhances the robustness of power supply system control, overcomes the output instability of an ozone generator, improves the stability of the ozone generator system, reduces the unit ozone power consumption and improves the ozone output concentration by adopting the special framework design of U-shaped magnetic core and solenoid layering;
(2) The invention relates to a winding framework design of a transformer coil, which adopts a layered winding mode, designs a unique winding framework structure, has large current and serious heating of a primary side of a transformer, adopts a layered framework, increases the effective heat dissipation area of the coil, reduces the temperature rise of the coil, has high output voltage of transformer secondary transformation, and can reach the peak value to 12000V, adopts a layered framework, facilitates the control of the leakage inductance value of the transformer, has larger design range of the leakage inductance of the transformer, has better consistency of the leakage inductance design of the same winding method, small parameter dispersion, zero drift and temperature drift of the leakage inductance value, has better working reliability and stability of an ozone discharge chamber, has high ozone output concentration and lower energy consumption, effectively reduces the voltage difference between layers, and reduces the interlayer insulation breakdown risk The interlayer parasitic capacitance of the secondary side is minimized, the high-order resonant eddy current of the transformer is reduced, the heating and impact-resistant response capability of the transformer is reduced, the leakage inductance value of the transformer can be accurately adjusted through the winding turns of different layers of the layered framework, the layered framework can be matched with an ozone discharge chamber more easily, and the purpose of high-efficiency work is achieved;
(3) The transformer of the invention has good high-frequency performance, reduces power consumption, can save 21 percent of energy, has smaller heat generation and more stable operation, the heat generation of the high-frequency resonance transformer special for ozone is the primary reason for inducing transformation faults, particularly for ferrite materials, the heat generation is more dangerous, because the Curie point of the ferrite materials is lower, if the temperature of the ferrite approaches or exceeds the Curie point due to the heat generation, the ferrite materials lose magnetism instantly, so that the inductance of a transformer coil is reduced to 0, thereby causing instant short circuit, burning out a driving device and causing serious faults, the transformer of the invention adopts a U-shaped magnetic core with low heat productivity, solves the problem of leakage inductance regulation through a special structure framework, simultaneously increases the heat dissipation area of a transformer coil, and a layered framework forms a diversion air duct to be more beneficial to the derivation of the heat generation of the transformer, the transformer has the advantages that the parasitic capacitance (turn-to-turn capacitance, interlayer capacitance and primary and secondary coupling capacitance) of the transformer coil is reduced to the minimum by the layered design of the transformer framework, the hysteresis loss and the eddy current loss of the transformer are reduced, the heating of the transformer is reduced, the litz wire is adopted for the transformer coil, the current carrying capacity of a lead is improved, the copper loss of the transformer is reduced, the heating is reduced, and the polytetrafluoroethylene coating of the litz wire not only improves the interlayer insulation and the turn-to-turn insulation of the coil, but also has better heat dissipation characteristic and reduces the temperature rise of the transformer compared with the prior art of epoxy casting the coil and insulating paper;
(4) Compared with the existing ozone special high-frequency resonance transformer technology, the transformer structure design of the invention adopts an assembly mode, each assembly adopts a die sinking process, the consistency is good, the error is small, the coil winding process is simple, the electrical connection is convenient, the process can be divided into process sections and parallel processing, the production cycle of the transformer is shortened, each process section can be standardized and streamlined, the parameter difference caused by human factors is reduced, the consistency of the transformer is ensured, special processes such as epoxy casting, coil cushion layers and primary and secondary coupling of the transformer are not needed in the production of the transformer, the process is simple, the technical threshold of the production of the transformer is reduced, the scale production is easier to realize, and the consistency of the parameters of the transformer is easy to ensure.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a wire wrap bobbin, its characterized in that, includes the skeleton body, the upper end and the lower extreme of skeleton body all are equipped with insulating interlayer (14) of solenoid to the magnetic core, the middle part of skeleton body is equipped with insulating interlayer (15) between a plurality of solenoid layers, the lower extreme of skeleton body is equipped with solenoid inlet wire guide slot (16), the upper end of skeleton body is equipped with solenoid outlet wire guide slot (17), the middle part of skeleton body is equipped with a plurality of solenoid wire winding guide slots (18).
2. A bobbin as claimed in claim 1, in which the insulating layer (14) of the coil to core is 5mm thick.
3. A wound bobbin according to claim 1, characterised in that the inter-layer insulation barrier (15) has a thickness of 2.5 mm.
4. The winding former of claim 1, wherein a plurality of said inter-layer insulation layers (15) are provided with inter-layer lead guide grooves (19).
5. A winding former according to claim 1, wherein the number of inter-layer insulation layers (15) is 7 and the number of winding channels (18) is 6.
6. The special high-frequency resonance transformer for the plate-type ozone generator applying the coil bobbin as claimed in any one of claims 1 to 5, which is characterized by comprising a magnetic core (22), wherein the magnetic core (22) is a U-shaped ferrite, the left end of the magnetic core (22) is sleeved with a primary coil bobbin (20), the primary coil bobbin (20) is sleeved with a primary coil (1), the right end of the magnetic core (22) is sleeved with a secondary coil bobbin (21), the secondary coil bobbin (21) is sleeved with a secondary coil (2), the primary coil bobbin (20) and the secondary coil bobbin (21) are identical in structure, the top surface of the magnetic core (22) is fixed with a top pressing plate (10) through a fastening bolt (3), and the bottom surface of the magnetic core (22) is fixed with a bottom pressing plate (9) through a mounting fixing bolt (6), the front of the left end and the right end of the top pressing plate (10) is connected with the back of the upper ends of the input connecting stand column (7) and the output connecting stand column (8) through a plurality of connecting stand column fixing screws (11), the front of the left end and the right end of the bottom pressing plate (9) is connected with the back of the lower end of the input connecting stand column (7) and the output connecting stand column (8) through a plurality of connecting stand column fixing screws (11), the upper end and the lower end of the input connecting stand column (7) are provided with input connecting bolts (4), and the upper end and the lower end of the output connecting stand column (8) are provided with output connecting bolts (5).
7. The high-frequency resonance transformer according to claim 6, characterized in that the bottom surface of the top pressing plate (10) is provided with a magnetic core damping clamping groove (12), and a magnetic core buffering protection silica gel pad (13) is arranged in the magnetic core damping clamping groove (12).
8. The high frequency resonance transformer according to claim 6, characterized in that the wires of the primary coil (1) are 0.2 x 250 gauge litz wires, the wires of the primary coil (1) have a cross-sectional area of 7.85 square millimeters, the wires of the secondary coil (2) are 0.2 x 100 gauge litz wires, and the wires of the secondary coil (2) have a cross-sectional area of 3.1 square millimeters.
9. The high frequency resonance transformer according to claim 6, characterized in that the wire surfaces of the primary winding (1) and the secondary winding (2) are provided with a polytetrafluoroethylene coating.
10. The high frequency resonance transformer according to claim 6, wherein the length of the mounting fixing bolt (6) is 30mm greater than the thickness of the bottom press plate (9).
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| CN202210225621.4A CN114678198A (en) | 2022-03-09 | 2022-03-09 | Special high-frequency resonance transformer for wire-wound wire framework and plate-type ozone generator |
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| CN202210225621.4A CN114678198A (en) | 2022-03-09 | 2022-03-09 | Special high-frequency resonance transformer for wire-wound wire framework and plate-type ozone generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117524681A (en) * | 2024-01-05 | 2024-02-06 | 浙江金大万翔环保技术有限公司 | Resonant leakage inductance transformer for plate-type ozone generator |
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| CN204315370U (en) * | 2015-01-16 | 2015-05-06 | 南京国电环保科技有限公司 | A kind of high frequency high voltage transformer bobbin |
| CN206451577U (en) * | 2017-01-23 | 2017-08-29 | 北京金大万翔环保科技有限公司 | A kind of transformer |
| CN207319884U (en) * | 2017-11-14 | 2018-05-04 | 北京迪威尔石油天然气技术开发有限公司 | A kind of high-frequency impulse step-up transformer skeleton and include its transformer |
| CN211265232U (en) * | 2020-01-16 | 2020-08-14 | 江西亿晟电气有限责任公司 | Pressing plate structure of amorphous alloy transformer |
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2022
- 2022-03-09 CN CN202210225621.4A patent/CN114678198A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204315370U (en) * | 2015-01-16 | 2015-05-06 | 南京国电环保科技有限公司 | A kind of high frequency high voltage transformer bobbin |
| CN206451577U (en) * | 2017-01-23 | 2017-08-29 | 北京金大万翔环保科技有限公司 | A kind of transformer |
| CN207319884U (en) * | 2017-11-14 | 2018-05-04 | 北京迪威尔石油天然气技术开发有限公司 | A kind of high-frequency impulse step-up transformer skeleton and include its transformer |
| CN211265232U (en) * | 2020-01-16 | 2020-08-14 | 江西亿晟电气有限责任公司 | Pressing plate structure of amorphous alloy transformer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117524681A (en) * | 2024-01-05 | 2024-02-06 | 浙江金大万翔环保技术有限公司 | Resonant leakage inductance transformer for plate-type ozone generator |
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