CN205680523U - A kind of Large Copacity dry type high-frequency and high-voltage reactance device - Google Patents

A kind of Large Copacity dry type high-frequency and high-voltage reactance device Download PDF

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Publication number
CN205680523U
CN205680523U CN201620388564.1U CN201620388564U CN205680523U CN 205680523 U CN205680523 U CN 205680523U CN 201620388564 U CN201620388564 U CN 201620388564U CN 205680523 U CN205680523 U CN 205680523U
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coil
frequency
tension coil
magnetic
layer
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张良波
陈滢
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Fujian Newland EnTech Co Ltd
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Fujian Newland EnTech Co Ltd
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/24Magnetic cores
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/06Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/24Magnetic cores
    • H01F27/26Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/263Fastening parts of the core together
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/2823Wires
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/2876Cooling
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/30Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/303Clamping coils, windings or parts thereof together
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/30Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/306Fastening or mounting coils or windings on core, casing or other support
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/32Insulating of coils, windings, or parts thereof
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/32Insulating of coils, windings, or parts thereof
    • H01F27/323Insulation between winding turns, between winding layers
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/32Insulating of coils, windings, or parts thereof
    • H01F27/327Encapsulating or impregnating
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/34Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields

Abstract

Utility model provides a kind of Large Copacity dry type high-frequency and high-voltage reactance device, comprise: UF type magnetic core, skeleton, coil and fixed support device, also comprise extraction copper bar or the copper cash of coil, described UF type magnetic core is made up of the relative U-shaped magnetic part of two openings, some magnetic stripes and insulating pad, each U-shaped magnetic part includes end yoke and other post, between described magnetic stripe and the compacted other post being arranged on two U-shaped magnetic parts of insulating pad, described insulating pad is arranged between adjacent magnetic stripe and between magnetic stripe and other post, between magnetic stripe, has gap between magnetic stripe and other post;Described quadrate framework is two, is respectively sleeved on the other post of UF type magnetic core and magnetic stripe;Described coil is made up of two high-tension coils, two high-tension coils are vertical structure, are wound on respectively on two quadrate frameworks, have insulating barrier between adjacent high-tension coil, described high-tension coil is formed by big stock litz wire coiling, and the space between the upper and lower end of coil and magnetic core arranges and adopts limit.

Description

A kind of Large Copacity dry type high-frequency and high-voltage reactance device
Technical field
The utility model belongs to dry reactor field, ranges high voltage electric equipment, is specifically related to a kind of Large Copacity Dry type high-frequency and high-voltage reactance device.
Background technology
In boosting or the conversion field of existing medium-high frequency power supply, there is techniques below and lack in conventional reactor more or less Point, causes existing high-frequency and high-voltage reactance device to there is boost capability little (below 10kVA), booster voltage low (below 1000V), ripple Form quality amount is not good, reactive loss is big, efficiency low (less than 90%), cannot Large Copacity longtime running and the not high technology of reliability not Foot.
1., owing to reactor is when assembling, coil is in vertical state, in strong transportation, end turn Inanition is likely to cause wire movement, further results in the fault of coil cross-layer.
2. due to multiple conducting wires be wound on same layer in coil, the coil of vertical structure under gravity, multiple conducting wires Falling phenomenon can occur, coil when serious, may be damaged.
3. the air channel of conventional reactor uses " " font stay as airway support, with heater members formed face with The contact in face, area of dissipation is less, radiating effect difference.
4. conventional high frequency reactor, usually coil are directly wound on the other post of magnetic core, only by absolutely between magnetic core and coil Edge paper is isolated, and in high-frequency high-power field, this method cannot ensure enough dielectric strengths and structural strength, and can cause hitting Wear and cause coil to cause fault to magnetic core electric discharge.
5. the coil in generally conventional reactor relies on and is fixed with magnetic core, and coil is directly anchored on magnetic core.Due to Magnetic core is ferrite material, belongs to frangible components and parts, if being directly fixed on magnetic core by coil, is likely to result in the breakage of magnetic core And crack.
6. the litz wire of routine does not substantially reach the thorough insulation between root and root, and stranded mode is coarse, and stranded half Footpath is inconsistent causes that resistance value variations is excessive, do not carry out special outsourcing imines film, it is impossible to ensure turn-to-turn under high-frequency and high-voltage Insulating properties, punch-through happens occasionally.
7., in conventional reactor, insulating barrier uses single polyester film or cable as insulating barrier paper.But it is high at high frequency In pressure reactor, due to the existence of high frequency spikes voltage and strong parasitic capacitance, or interlayer is caused to produce high parasitic electricity Pressure reduction, this stray voltage peak value could possibly be higher than more than 10 times of normal voltage, can cause the breakdown fault of reactor easily.For this The dielectric strength of layer insulation and anti-dielectric properties must be greatly improved.
8. the layer insulation of the coil in conventional reactor integrally holds dielectric for flood wire, so in conventional reactance In device proper;But in radio-frequency rector, this design can cause coil width to increase to thickness, the magnetic field hinge between coil Chain degree reduces, and causes impedance rising, output performance to reduce the delivery efficiency that reactive power increase also reduces reactor.
In sum, there is above technical disadvantages more or less due to conventional reactor, cause existing high-frequency and high-voltage Reactor exists that boost capability is little, booster voltage is low, waveform quality is not good, reactive loss is big, efficiency low (less than 90%), cannot The not high technical deficiency of Large Copacity longtime running and reliability.Development with medium-high frequency field and the need to high-frequency and high-voltage power supply Asking, Large Copacity high-frequency and high-voltage resonance step-up reactor becomes the technology being badly in need of breaking through, and the version of this reactor is dry type, Want to have the following characteristics that and can export (more than 400kVA), high voltage output (more than 10000V), delivery efficiency height by Large Copacity (more than 98%), operating frequency high (2k~100kHz) energy Large Copacity runs without interruption for a long time, small in volume (volume weight Reduce by more than 50%), the feature of low-loss heating (caloric value is less than the 1% of capacity), it is therefore desirable to have a kind of Large Copacity dry type High-frequency and high-voltage reactance device, it can overcome above technical deficiency, make high-frequency and high-voltage power supply also can realize Large Copacity output, high efficiency Export, can run without interruption for a long time, small in volume, the excellent properties of low-loss heating, meet demand.
Utility model content
The purpose of this utility model is to provide a kind of high-power dry type high-frequency and high-voltage reactance device, is used for solving current high frequency high Pressure field exist waveform quality difference, reactive loss is big, transfer capacity is little, booster voltage is low, efficiency is low, cannot longtime running and The not high performance deficiency of reliability, so that the use of high-frequency and high-voltage power supply can be more extensive and reliable;Make high-frequency and high-voltage power supply Also can realize Large Copacity High voltage output, high efficiency output, good waveform, minimum reactive loss, can run without interruption for a long time, Small in volume, the excellent properties of low-loss heating.
Realize that the technical scheme of the utility model purpose is as follows: a kind of Large Copacity dry type high-frequency and high-voltage reactance device, comprise UF The extraction copper bar of type magnetic core, quadrate framework, coil, fixed support device and coil or copper cash, it is characterised in that: described UF type magnetic Core is made up of the relative U-shaped magnetic part of two openings, some magnetic stripes and insulating pad, and each U-shaped magnetic part includes end yoke and end yoke Between the compacted other post being arranged on two U-shaped magnetic parts of the other post of both sides, described magnetic stripe and insulating pad, described insulating pad sets Put between adjacent magnetic stripe and between magnetic stripe and other post, described insulating pad makes between adjacent magnetic stripe, magnetic stripe and other post it Between formed gap;Described quadrate framework is two, is respectively sleeved on other post and the magnetic stripe of UF type magnetic core both sides;Described coil by Two high-tension coil compositions, said two high-tension coil is vertical structure, is wound on respectively on two quadrate frameworks;Each high pressure Coil has several conductor layers, has the first insulating barrier between adjacent conductor layer, and described conductor layer is that big stock litz wire is made Forming for wire coiling, whole of the outside of described big stock litz wire holds multilayer the second insulating barrier, described big stock litz wire continuously If being formed by carried interest shallow bid litz wire is stranded, described shallow bid litz wire is formed by the copper cash of some high conductivities is stranded, every Outside cladding the 3rd insulating barrier of copper cash;
Described high-tension coil arranges axially heat radiation air flue;
The space of the upper and lower end of described high-tension coil is arranged adopts limit (i.e. using insulating materials to fill);
Described fixed support device comprises epoxy plate, lower epoxy plate, fagging and pull bar, and described UF type magnetic core is seated in down On epoxy plate, described high-tension coil is seated on fagging, fixes and be connected between described lower epoxy plate and fagging, described upper epoxy Connected fixing between plate, lower epoxy plate by pull bar.
In order to reach superior technique effect, the technical solution of the utility model can also be specially techniques below feature:
1. said two high-tension coil by same wire reversely uninterruptedly connect coiling form, i.e. first high-tension coil Ending directly move on second high-tension coil, as starting of second high-tension coil, but two high-tension coils is upper Wire is around on the contrary.
2. adopt the space of the upper and lower end to each high-tension coil for the limit T1 type insulating electrical cardboard described in carry out insulation and fill out Filling, described T1 type insulating electrical cardboard is laid in each high-tension coil end, and uses phenolic resin glue to be bonded in high-tension coil End, laminates layer by layer, firmly forms one with high-tension coil, and its edge portion flushes with quadrate framework end, interior edge and wire Contact.
3. being filled with fixing between quadrate framework UF type magnetic core, filler is insulation board.
4. the surface of quadrate framework described in holds the 4th insulating barrier.
5. quadrate framework described in and between UF type magnetic core, there is air insulation clearance.
6. further, the thickness of described air insulation clearance is not less than 6mm.
7. the first insulating barrier described in is compound interleave insulating barrier, including at least exhausted different with two kinds of DMD paper of imines film Edge medium, described dielectric is that multi-layer intercrossed stacking uses, and adjacent two-layer dielectric is unlike material.
8. the second dielectric described in is the imines film between 0.025-0.05mm for the thickness.
9. the 3rd insulating barrier described in is high intensity acetal insulated paint overlay.
10. the axial turn-to-turn of the high-tension coil of reactor described in is bundled by electrician leukorrhea, leads for every layer of described high-tension coil Electrician leukorrhea is laid by the lower floor of line layer, and 1 electrician leukorrhea is placed in each corner of high-tension coil, and the every coiling of every layer conductor is to 1/4 Around long when, the part reverse drawing that grows of described electrician leukorrhea will push down tension to the lower section of follow-up wire, the wire of coil is entered Row axially binding.
High-tension coil described in 11. is formed by the cast of glass epoxy silk, and the class of insulation is H level or higher, high-tension coil Heatproof should be not less than 180 DEG C.
High-tension coil overall vacuum dipping F class B insulation paint described in 12..
High-tension coil appearance described in 13. holds F level overlay film extrusion coating paper.
Big stock litz wire described in 14. is formed by 5-19 root shallow bid litz wire is stranded.
15. further, and the shallow bid litz wire in described big stock litz wire is that set a distance is stranded.
16. further, and the twisting pitch of described shallow bid litz wire is 20 ~ 45mm.
Shallow bid litz wire described in 17. is twisted into by 5-19 root copper cash.
18. further, and the copper cash in described shallow bid litz wire is that set a distance is stranded.
19. further, and the twisting pitch of described copper cash is 10 ~ 45mm.
The cross section of gas channel supporting bar described in 20. is I-shaped.
Described in 21., the first insulating barrier uses the mode of graded insulation, and the layer insulation of adjacent high-tension coil is divided into N Level, N is natural number, and each class B insulation uses different isolation material, the 1st layer conductor coiling to 1/N around long when stopping around Line, hold the 1st grade of 1/N insulation;Further around the 2nd section of 1/N layer line of system, hold the 2nd grade of 1/N insulation;By that analogy, last coiling N Individual 1/N layer line, hold N class B insulation.
22. further, and described N value is 2-8.
23. said two high-tension coils may also take on coiling in parallel in the same direction, i.e. two high-tension coils around to identical, two Starting of the wire of high-tension coil is connected, and the ending of the wire of two high-tension coils is connected.
The Large Copacity dry type high-frequency and high-voltage reactance utensil using technical solutions of the utility model has the advantage that
1. waveform good (standard sine wave), reactive loss be little, Large Copacity, high voltage, high-frequency, low-loss, long-term not between Disconnected operation.
2. reversely uninterrupted series connection winding method taked by two coils;Improve the hinge degree in magnetic field, reduce leakage magnetic flux, carry High-impedance behavior, reduces impedance voltage, improves overall performance, reduces reactor volume simultaneously, and assembling is simple, saves material and becomes This.
3. use the litz wire of particular design: can well eliminate and under high frequency magnetic field, cause the kelvin effect of electric current and neighbouring The serious A.C.power loss that effect is brought, effectively reduces reactor temperature rise.
4. hold the imines film of 4 layers of δ 0.025 outside the litz wire of big stock continuously, can effectively prevent the sensing of turn-to-turn from hitting Wear;Not slippery layer.
5. all thoroughly insulate between all copper cash roots in litz wire and root, it is ensured that the efficient profit of copper cash ampacity With.
6. litz wire spectral range is wide: be applicable to 2k~100kHz.
7., in reactor of the present utility model, each high-tension coil has several conductor layers, between adjacent conductor layer Having the first insulating barrier, described first insulating barrier uses imines film (C class B insulation, heatproof 220 DEG C) and DMD paper cross-bedding Folded use, performance that it is pressure is not only higher than both and is worth, and having excellent dielectric properties, can effectively prevent stray voltage The breakdown fault causing;Ensure reliable high-frequency insulation level.
8., in reactor of the present utility model, high-tension coil uses the mode of graded insulation, during coiling lattice coil, the number of plies More, number is more for the layer insulation that reduce, the width of coil to thinner, dielectric strength can not only be ensured, reduce the width of coil to Thickness, reduces winding volume, it is ensured that the excellent output characteristics of reactor, reduction impedance, reduction leakage magnetic flux and reactive power consumption, and energy Reduce layer insulation number.
9. use insulating electrical cardboard carry out insulation filling to end turn and use phenolic resin glue to be bonded in coil-end Portion, laminates layer by layer, firmly forms one with coil, and in follow-up paint-dipping process, can preferably be attached to coil inside, to line Circle is overall plays support fixation, makes wire will not fall the layer that collapses, and can prevent that end is creepage causes end to puncture.
10. the axial turn-to-turn of coil of reactor described in is bundled by electrician leukorrhea, the lower floor of every layer conductor layer of described coil Lay electrician leukorrhea, described electrician leukorrhea is laid on four corners of coil, the every coiling of every layer conductor to 1/4 around long when, i.e. The part reverse drawing that grows of described electrician leukorrhea is pushed down tension to the lower section of follow-up wire, to rise around coil axially tie Tie up;And axial electrician leukorrhea can repeatedly interlock to intert and compress, the effect axially bundling can be played to flood wire.This is axial Can well fasten and reduce gap, fixed in high-frequency electromagnetic stress bottom offset space between the coil of binding, circle and circle, energy Effectively reduce noise when running.
In 11. this novel inventions, the difference of axial ducts is, provides the gas channel supporting bar of a kind of I-shaped, its " work " literal contact coil-conductor surface, formation point contacts with face, and the area so contacting with conductor can be much smaller than routine " " font stay, area of dissipation is bigger, and radiating effect is more preferable.
In 12. the utility model, two high-tension coils take the reversely uninterruptedly series connection coiling of a wire, and wire is not cut Disconnected, first high-tension coil coiling terminates rear wire and directly gets to coiling on second coil, has stopped the string of litz wire completely Connection is completely cured and is not turned on a difficult problem, decreases welding job amount;Avoid the heating that the eddy current of pad causes;External series connection is avoided to lead The projection of line, improves flatness and the aesthetic measure of coil;Decrease the depainting number of times of litz wire, simplify the work that entity makes Sequence.
Multilayer electrical isolation between 13. the utility model mesohigh coils and magnetic core: high-tension coil is not about on magnetic core, But be first wound on quadrate framework, and before coiling, quadrate framework surface holds multilayer DMD insulating barrier, to improve absolutely Edge.In addition, after quadrate framework packs into coil, also possessing the air insulation clearance of 6mm between quadrate framework and magnetic core, these are three years old The voltage endurance capability of the measure of kind is entirely capable of isolating out the discharge breakdown phenomenon to magnetic core for the high-tension coil, and can guarantee that enough structures are strong Degree.
The fixing support of 14. high-tension coils: in the utility model, high-tension coil is isolated with magnetic core, is shared its weight On fagging, magnetic core does not undertake the gravity of high-tension coil, and fagging undertakes the gravity of high-tension coil completely, and fagging itself falls within insulation Device.This method for designing not only ensure that the fixing of high-tension coil, and assembling mode is simple and reliable.
Brief description:
Accompanying drawing 1 is the overall schematic of Large Copacity dry type high-frequency and high-voltage reactance device of the present utility model
Accompanying drawing 2 is the front view of Large Copacity dry type high-frequency and high-voltage reactance device of the present utility model
Accompanying drawing 3 is the left view of Large Copacity dry type high-frequency and high-voltage reactance device of the present utility model
Accompanying drawing 4 is the top view of Large Copacity dry type high-frequency and high-voltage reactance device of the present utility model
Accompanying drawing 5 is the front view of the UF type magnetic core of Large Copacity dry type high-frequency and high-voltage reactance device of the present utility model
Accompanying drawing 6 is the front view of the quadrate framework of Large Copacity dry type high-frequency and high-voltage reactance device of the present utility model
Accompanying drawing 7 is the graded insulation schematic diagram of the high-tension coil of Large Copacity dry type high-frequency and high-voltage reactance device of the present utility model
Accompanying drawing 8 be the high-tension coil end of Large Copacity dry type high-frequency and high-voltage reactance device of the present utility model adopt limit schematic diagram
Accompanying drawing 9 is that the axial turn-to-turn fastening of the high-tension coil of Large Copacity dry type high-frequency and high-voltage reactance device of the present utility model is shown It is intended to
Accompanying drawing 10 is air flue and the support signal thereof of the coil of Large Copacity dry type high-frequency and high-voltage reactance device of the present utility model Figure
Accompanying drawing 11 is that the big stock litz wire of the high-tension coil of Large Copacity dry type high-frequency and high-voltage reactance device of the present utility model shows It is intended to
Accompanying drawing 12 is the schematic diagram of the coil of Large Copacity dry type high-frequency and high-voltage reactance device of the present utility model
Accompanying drawing 13 is the multilayer between the high-tension coil of Large Copacity dry type high-frequency and high-voltage reactance device of the present utility model and magnetic core Electrical isolation schematic diagram
In Fig. 1-13,1 be Large Copacity dry type high-frequency and high-voltage reactance device, 2 for UF type magnetic core, 3 for quadrate framework, 4 for coil, 5 being heat radiation air flue, 6 being fixed support device, 7 is the extraction copper bar of coil or copper cash, and 8 is gas channel supporting bar, and 10 for big dividend hereby Line, 11 is shallow bid litz wire, and 12 is copper cash, and 13 for adopting limit, and 21 is U-shaped magnetic part, and 22 is end yoke, and 23 is other post, and 24 is magnetic stripe, 25 is insulating pad, and 26 is the gap between adjacent magnetic stripe, and 27 is the gap between magnetic stripe and other post, and 41 is high-tension coil, 42 For the conductor layer of high-tension coil, 43 is electrician leukorrhea;61 for upper epoxy plate, 62 be lower epoxy plate, 63 be fagging, 64 be pull bar, 91 is the first insulating barrier;92 is the second insulating barrier, and 93 is the 3rd insulating barrier, and 101 is the 4th insulating barrier, and 102 is air barrier.
Detailed description of the invention:
In order to better illustrate the technical solution of the utility model, below in conjunction with accompanying drawing 1-13 to great Rong of the present utility model One embodiment of amount dry type high-frequency and high-voltage reactance device is described in detail.
Embodiment one:
As shown in accompanying drawing 1-13, Large Copacity dry type high-frequency and high-voltage reactance device 1 of the present utility model, comprise UF type magnetic core the 2nd, side The extraction copper bar of shape skeleton the 3rd, coil the 4th, fixed support device 6 and coil 4 or copper cash 7, described UF type magnetic core is by two opening phases To U-shaped magnetic part the 21st, some magnetic stripes 24 and insulating pad 25 form, each U-shaped magnetic part 21 includes end yoke 22 and end yoke both sides Other post 23, between described magnetic stripe 24 and the compacted other post 23 being arranged on two U-shaped magnetic parts 21 of insulating pad 25, described insulation Backing plate 25 is arranged between adjacent magnetic stripe 24 and between magnetic stripe 24 and other post 23, described insulating pad 25 make adjacent magnetic stripe it Between formed and between gap the 26th, magnetic stripe and other post, form gap 27;Described quadrate framework 3 is two, is respectively sleeved at UF type magnetic core 2 On the other post 23 of both sides and magnetic stripe 24;Described coil 4 is made up of two high-tension coils 41, and said two high-tension coil 41 is vertical Structure, is wound on two quadrate frameworks 3 respectively;Each high-tension coil 4 has several conductor layers 42, adjacent conductor layer 42 Between there is the first insulating barrier 91, described conductor layer 42 forms, outside described big stock litz wire 10 for the coiling of big stock litz wire 10 Whole of face holds multilayer the second insulating barrier 92 continuously, if described big stock litz wire 10 is formed by carried interest shallow bid litz wire 11 is stranded, Described shallow bid litz wire is formed by the copper cash 12 of some high conductivities is stranded, outside cladding the 3rd insulating barrier of every copper cash 12 93;Described high-tension coil 41 arranges axially heat radiation air flue 5.
The space of the upper and lower end of described high-tension coil 41 is arranged adopts limit 13, and described limit of adopting is for using insulating materials to high pressure The space of the upper and lower end of coil 41 is filled with;Described fixed support device 6 comprises epoxy plate the 61st, lower epoxy plate the 62nd, fagging 63 and pull bar 64, described UF type magnetic core 2 is seated on lower epoxy plate 62, and described high-tension coil is seated on fagging 63, described under Fix between epoxy plate 62 with fagging 63 and be connected, connected fixing by pull bar 64 between described upper epoxy plate the 61st, lower epoxy plate 62.
For superior technique effect, in the present embodiment, it is preferable that said two high-tension coil is reverse by same wire Uninterrupted series connection coiling forms, i.e. the ending of first high-tension coil is directly moved on second high-tension coil, as second Starting of high-tension coil, but the upper wire of two high-tension coils is around on the contrary.So can improve hinge degree, the fall in magnetic field Low drain magnetic flux, improves impedance operator, reduces impedance voltage, improves overall performance, reduces reactor volume, assembling letter simultaneously Single, save material cost.
Additionally, in actual applications, according to actual needs, said two high-tension coil also can take in parallel in the same direction around System, i.e. two high-tension coils are around to identical, and starting of the wire of two high-tension coils is connected, the wire of two high-tension coils Ending is connected.
For superior technique effect, in the present embodiment, respectively between overhang, quadrate framework and EE type magnetic core Gap and the axial turn-to-turn of coil of reactor be filled with respectively or bundle reinforcing.
Firstly, since reactor is when assembling, high-tension coil is in vertical state, in strong transportation, and high pressure The inanition of end turn is likely to cause wire movement, further results in the fault of cross-layer.To this end, the utility model have employed one Plant T1 type insulating electrical cardboard and insulation filling has been carried out to high-tension coil end, be described as adopting limit.As shown in figure 13, described high pressure Space between the upper and lower end UF type magnetic core 2 of coil 4 is arranged adopts limit 13, and described limit 13 of adopting is for using T1 type insulating electrical paper The space of the upper and lower end to each high-tension coil for the plate carries out insulation filling, and described T1 type insulating electrical cardboard is laid in each High-tension coil end, its edge portion flushes with skeleton end, interior edge and conductive contact, under raised state, adopts limit and supports Wire, then wire will not fall the layer that collapses.And use phenolic resin glue to be bonded in high-tension coil end, laminate layer by layer, with high pressure Coil firmly forms one, and in follow-up paint-dipping process, can preferably be attached to inside high-tension coil, overall to high-tension coil Play support fixation.Also other insulative glue can be used to carry out bonding.
Second, the gap between the other post of described quadrate framework and magnetic core and magnetic stripe is also carried out filling and fixes, and i.e. uses absolutely Edge epoxy plate fill in quadrate framework and other post and magnetic stripe between gap, the gap in four faces is all filled in insulating epoxy plate and is filled out Fill, to prevent quadrate framework from rocking, it is achieved fixing between quadrate framework and other post and magnetic stripe.
3rd, due to multiple conducting wires be wound on same layer in the coil of vertical structure high pressure, under gravity, lead for many Line can occur falling phenomenon, may damage high-tension coil, therefore, carry out high-tension coil axially in the utility model when serious The fastening means that turn-to-turn mutually bundlees, prevents the displacement of wire.As it is shown in figure 9, the axial turn-to-turn of the high-tension coil of described reactor Being bundled by electrician leukorrhea, electrician leukorrhea is laid by the lower floor of every layer conductor of described high-tension coil, and described electrician leukorrhea lays high pressure In four corners of coil, the every coiling of every layer conductor to 1/4 around long when, will the part reverse drawing that grow of described electrician leukorrhea arrive Tension is pushed down in the lower section of follow-up wire, to rise around high-tension coil axially bundle;And axially electrician leukorrhea can be handed over repeatedly Wrong interting compresses, and can play the effect of axially binding to flood wire.Energy between this high-tension coil axially bundling, circle and circle Well fasten and reduce gap, fixed in high-frequency electromagnetic stress bottom offset space, can effectively reduce noise during operation.
For superior technique effect, in the present embodiment, the first insulating barrier being between adjacent high-tension coil 41 is excellent Selection of land uses the insulation mode of alternation sum classification, specially techniques below feature:
1. the first insulating barrier 91 described in is compound interleave insulating barrier, different with two kinds of DMD paper including at least imines film Dielectric, described dielectric is that multi-layer intercrossed stacking uses, and adjacent two-layer dielectric is unlike material;
2. described in, the first insulating barrier uses the mode of graded insulation, i.e. the layer insulation of adjacent high-tension coil is divided into N Level, N is preferably the natural number of 2-8, and each class B insulation uses different isolation material, the 1st layer conductor coiling to 1/N around grow when Wait stopping coiling, hold the 1st grade of 1/N insulation;Further around the 2nd section of 1/N layer line of system, hold the 2nd grade of 1/N insulation;By that analogy, finally Coiling n-th 1/N layer line, hold N class B insulation.
3., in the present embodiment, N is 4, as it is shown in fig. 7, be specifically described as: the 1st layer conductor coiling to 1/4 around long when stop Stop coiling, hold the 1st grade of 1/4 insulation;Further around the 2nd section of 1/4 layer line of system, hold the 2nd grade of 1/4 insulation;Further around system the 3rd 1/4 layer Line, hold 3rd level insulation;Further around the 4th 1/4 layer line of system, finally hold the 4th class B insulation.Feature according to this, if the many layer lines of coiling Circle, relative to not graded insulation, the corresponding relation that graded insulation can reduce layer insulation number is as shown in table 1.(the present embodiment In, layer insulation paper number is 8).
As can be seen here: number is more for the insulation of number of plies layer more, less, the width of coil to thinner, volume is also less;This The advantage planting winding method is: can not only ensure dielectric strength, reduce the width of coil to thickness, it is ensured that reactor is excellent Output characteristics, reduction impedance, reduction leakage magnetic flux and reactive power consumption.
For superior technique effect, high-tension coil 41 described in the present embodiment is formed by big stock litz wire coiling 10, institute State the litz wire that litz wire 10 is particular design.As shown in figure 11, described litz wire 10 has a following technical characteristic:
1. big stock litz wire 10 described in is formed by 5-19 root shallow bid litz wire 11 is stranded, the shallow bid in described big stock litz wire Litz wire 11 is stranded for set a distance, and twisting pitch is 20-45mm;In the present embodiment, it is stranded that preferably every 10 shallow bids carry out spacing, Pitch is 35mm.
2. described in, whole of the outside of big stock litz wire 10 holds multilayer the second insulating barrier 9 continuously.
3. the second dielectric described in is the imines film between 0.025-0.05mm for the thickness.
4. outside big stock litz wire, whole holds the number of plies to the second dielectric described in continuously can be 2-8 layer.This enforcement The number of plies that holds in example is preferably 4 layers.
5. shallow bid litz wire described in is twisted into by 5-19 root copper cash, and the copper cash in shallow bid litz wire is that set a distance is stranded, strand Closing pitch is 10-45mm;In the present embodiment, it is stranded that preferably every 7 copper cash carry out spacing, carries out once stranded every 25mm.
The litz wire using in the utility model, major advantage is:
1. a small gangs of all set a distance every is stranded, carries out once stranded every 25mm;This stranded can stop in wire completely The high frequency eddy current losses in portion self;And the stranded diameter of spacing is consistent, ensure each wire error in length 1%;
2. to carry out spacing stranded for 10 shallow bids, and pitch is 35mm, this stranded neighbour that can stop completely between wire root and root Nearly effect loss;And the stranded diameter of spacing is consistent, ensure each wire error in length 1%;
3. hold the imines film (the second insulating barrier) of 4 layers of δ 0.025 outside whole wire continuously, can effectively prevent turn-to-turn Sensing puncture;
4. outer layer imines film holds firmly, and not slippery layer is particularly suitable for this type of dry reactor;
5. all thoroughly insulate between all and root, it is ensured that the efficient utilization of copper cash ampacity;
Spectral range is wide: be applicable to 2k~100kHz.
It is tight that this litz wire can well eliminate the kelvin effect causing electric current under high frequency magnetic field and kindred effect is brought Weight A.C.power loss, effectively reduces reactor temperature rise.As a example by frequency f=4000Hz, now skin depth Δ is 1.21mm, if choosing Being φ 0.27 with solid conductor, being much smaller than 2 Δs, solid conductor itself has good high frequency performance.
The air channel of conventional reactor uses " " font stay as airway support, forms face and face with heater members Contact, area of dissipation is less, radiating effect difference.
For superior technique effect, in the present embodiment, as shown in Figure 10, the high-tension coil of vertical structure is provided with axle To heat radiation air flue 5, heat radiation air flue 5 is internal uses I-shaped gas channel supporting bar 8 as airway support.Described I-shaped air flue supports The cross section of bar 8 is I-shaped, its " work " literal contact coil-conductor surface, forms point and the contacting of face, so and conductor The area of contact can be much smaller than " " font stay, and area of dissipation is bigger, and radiating effect is more preferable.It is aided with the axial of radiator fan Wind, cold wind can enter inside wire and the magnetic core of reactor inner heat, take away heat, reduces reactor temperature rise.
For superior technique effect, in the present embodiment, high-tension coil is preferably by techniques below feature:
1. high-tension coil described in is formed by the cast of glass epoxy silk, and the class of insulation is H level or higher, high-tension coil Heatproof should be not less than 180 DEG C.
2. high-tension coil overall vacuum dipping F class B insulation paint described in.
3. high-tension coil appearance described in holds F level overlay film extrusion coating paper.
Conventional high frequency reactor, usually coil are directly wound on the other post of magnetic core, only by insulation between magnetic core and coil Paper is isolated, and in high-frequency high-power field, this method cannot ensure enough dielectric strengths and structural strength, and can cause punch through Coil is caused to cause fault to magnetic core electric discharge.
For superior technique effect, the utility model have employed a kind of measure strengthening electrical isolation, such as Figure 13 institute Show.It is specifically described as: high-tension coil is not about on the other post and magnetic stripe of magnetic core, but is first wound on quadrate framework, and Before coiling, quadrate framework surface holds multilayer the 4th insulating barrier, and in the present embodiment, described 4th insulating barrier is DMD insulation Layer, to improve insulation.Quadrate framework itself also improves insulating properties;In addition, after quadrate framework packs into coil, quadrate Between the other post of frame and magnetic core and magnetic stripe, also possess the air insulation clearance of 6mm as air barrier 102, this three kinds of measures Voltage endurance capability be entirely capable of isolating out the discharge breakdown phenomenon to magnetic core for the high-tension coil, and can guarantee that enough structural strengths.
The coiling that quadrate framework is high-tension coil provides mould to fix.Quadrate framework itself is a kind of high-strength insulating material Material, is formed by the cast drying of glass epoxy silk, class of insulation H level, heatproof 180 DEG C.Can be fixed on coil winding machine, with coiling Machine rotates coaxially and carries out coil winding.In this utility model, skeleton is applied not only to coil winding, insulating device, also can hold very well By the stress on coil when running, prevent winding deformation, reduction flexible vibrations under electromagnetic force for the coil, reduce noise.
Coil in generally conventional reactor relies on and is fixed with magnetic core, and coil is directly anchored on magnetic core.Due to magnetic Core is ferrite material, belongs to frangible components and parts, if being directly fixed on magnetic core by coil, be likely to result in magnetic core breakage and Crack.
Fix supporting way for this utility model have employed a kind of special coil, be specifically described as: such as Fig. 1-4 institute Showing, described fixed support device 6 comprises epoxy plate the 61st, lower epoxy plate the 62nd, fagging 63 and pull bar 64, and described magnetic core 2 is seated in On lower epoxy plate, described high-tension coil is seated on fagging, fixes and be connected between described lower epoxy plate and fagging, described upper epoxy Connected fixing by pull bar 64 between plate the 61st, lower epoxy plate 62.The outside sheathed insulation tube of described pull bar, or pull bar employing itself is absolutely Edge material is made.
In above-mentioned fixing supporting way, the fagging 63 arranging is utilized to isolate high-tension coil with magnetic core, by high-tension coil Weight is shared on the special fagging 63 arranging, and magnetic core does not undertake the gravity of high-tension coil, and fagging 63 undertakes high-tension coil completely Gravity, fagging 63 itself falls within insulating device.This method for designing not only ensure that the fixing of high-tension coil, and assembling side Formula is simple and reliable.
The assembling of the simple Large Copacity dry type high-frequency and high-voltage reactance device introducing employing technical solutions of the utility model is suitable below Sequence:
1. need ready five big parts when assembling: magnetic core, magnetic stripe, magnetic stripe gap backing plate, coil, upper and lower epoxy plate, support Plate, pull bar.
2. assemble sequence:
1. first lower epoxy plate and fagging are fixed, connect under lock and key with nylon bolt;
2. lower half magnetic core is placed on lower epoxy plate, notices that placement location wants placed in the middle;
3. it is placed on magnetic stripe and magnetic stripe gap backing plate on the magnetic core of lower half, notice that magnetic stripe and gap backing plate are right
4. coil is packed into magnetic stripe, and adjust the degree of registration of magnetic stripe, as far as possible alignment;Coil bottom should be placed on fagging On, coil and fagging contact to consolidate;
5. pack into first half magnetic core and again adjust the degree of registration of magnetic stripe, it is ensured that magnetic stripe aligns;
6. the gap between filler plug stringing ring framework and magnetic core, fixed coil, prevents coil from rocking;
7. first half magnetic core is packed into;
8. by pull bar, upper and lower epoxy plate is locked, notice that pull bar insulation tube entangles, prevent coil from discharging pull bar.
Special feature of the present utility model is described as: its fundamental characteristics is wanted to realize reactance in the case of meeting high frequency simultaneously The characteristic of the Large Copacity of device, high voltage, low-loss, high efficiency and longtime running.To this end, selected through particular design and technology The material requiring is carried out, while improving a lot of technique, novelty to have invented multilayer small-gap suture magnetic core, two coils uninterruptedly anti- To series connection coiling, graded insulation, MULTILAYER COMPOSITE interlock insulation, coil axially fasten, the innovative point of multilayer electrical isolation.
The utility model is not limited to this classification reactor of all of the above characteristic, requires have during for some difference The Performance Characteristics being previously mentioned in this utility model, the utility model also comprises.
The novel practical point that the utility model is comprised be not limited to overall object performance, equally comprise this classification invention Self distinctive method for designing, combination, art inventions, manufacture skill, the key element such as material specification.

Claims (10)

1. a Large Copacity dry type high-frequency and high-voltage reactance device, comprises UF type magnetic core (2), quadrate framework (3), coil (4), fixes and prop up The extraction copper bar of support arrangement (6) and coil or copper cash (7), it is characterised in that: described UF type magnetic core is by relative U-shaped of two openings Magnetic part (21), some magnetic stripes (24) and insulating pad (25) composition, each U-shaped magnetic part (21) includes end yoke (22) and end yoke two The compacted other post (23) being arranged on two U-shaped magnetic parts (21) of the other post (23) of side, described magnetic stripe (24) and insulating pad (25) Between, described insulating pad (25) is arranged between adjacent magnetic stripe (24) and between magnetic stripe (24) and other post (23), described absolutely Edge backing plate (25) makes between adjacent magnetic stripe, form gap (26) and (27) between magnetic stripe and other post;Described quadrate framework (3) is It two, is respectively sleeved on other post (23) and the magnetic stripe (24) of UF type magnetic core (2) both sides;Described coil (4) is by two high-voltage lines Circle (41) composition, said two high-tension coil (41) is vertical structure, is wound on respectively on two quadrate frameworks (3);Each is high Line ball circle (4) has several conductor layers (42), has the first insulating barrier (91), described wire between adjacent conductor layer (42) Layer (42) is that big stock litz wire (10) forms as wire (44) coiling, the continuous bag in whole of outside of described big stock litz wire (10) Around multilayer the second insulating barrier (92), described big stock litz wire (10) is if being formed by carried interest shallow bid litz wire (11) is stranded, described little Stock litz wire is formed by the copper cash (12) of some high conductivities is stranded, outside cladding the 3rd insulating barrier of every copper cash (12) (93);
Described high-tension coil (41) arranges axially heat radiation air flue (5);
The space of the upper and lower end of described high-tension coil (41) is arranged adopts limit (13), and described limit of adopting is for using insulating materials to high pressure The space of the upper and lower end of coil (41) carries out insulation filling,
Described fixed support device (6) comprises epoxy plate (61), lower epoxy plate (62), fagging (63) and pull bar (64), described UF type magnetic core (2) is seated on lower epoxy plate (62), and described high-tension coil is seated on fagging (63), described lower epoxy plate (62) It is connected with fixing between fagging (63), connected by pull bar (64) fixing between described upper epoxy plate (61), lower epoxy plate (62).
2. Large Copacity dry type high-frequency and high-voltage reactance device as claimed in claim 1, it is characterised in that: said two high-tension coil (41) by same wire reversely uninterruptedly connect coiling form, i.e. the ending of first high-tension coil directly move to second high On line ball circle, as starting of second high-tension coil, but the upper wire (44) of two high-tension coils (41) is around on the contrary.
3. Large Copacity dry type high-frequency and high-voltage reactance device as claimed in claim 1, it is characterised in that: described limit T1 type of adopting insulate The space of the upper and lower end to high-tension coil for electrician's cardboard carries out insulation filling, and described T1 type insulating electrical cardboard is laid in often Individual high-tension coil end, and use phenolic resin glue to be bonded in each high-tension coil end, laminate layer by layer, firm with high-tension coil Forming one, its edge portion flushes with quadrate framework end, interior edge and conductive contact.
4. Large Copacity dry type high-frequency and high-voltage reactance device as claimed in claim 1, it is characterised in that: described first insulating barrier (91) For compound interleave insulating barrier, including at least two kinds of different dielectrics of imines film and DMD paper, described dielectric is multilayer Intersecting uses, and adjacent two-layer dielectric is unlike material.
5. Large Copacity dry type high-frequency and high-voltage reactance device as claimed in claim 1, it is characterised in that: the high-voltage line of described reactor The axial turn-to-turn of circle (41) is bundled by electrician leukorrhea, and electrician lays in the lower floor of every layer conductor layer (42) of described high-tension coil (41) Leukorrhea, each corner of high-tension coil (41) places 1 electrician leukorrhea (43), the every coiling of every layer conductor (44) to 1/4 around long when, The part reverse drawing that grows of described electrician leukorrhea (43) tension will be pushed down to the lower section of follow-up wire (44), the wire to coil (44) axially bundle.
6. Large Copacity dry type high-frequency and high-voltage reactance device as claimed in claim 1, it is characterised in that: described big stock litz wire (10) Formed by 5-19 root shallow bid litz wire (11) is stranded.
7. Large Copacity dry type high-frequency and high-voltage reactance device as claimed in claim 1, it is characterised in that: described shallow bid litz wire (11) It is twisted into by 5-19 root copper cash (12).
8. Large Copacity dry type high-frequency and high-voltage reactance device as claimed in claim 1, it is characterised in that: in described heat radiation air flue (5) Portion uses gas channel supporting bar (8) as airway support, and the cross section of described gas channel supporting bar (8) is I-shaped.
9. Large Copacity dry type high-frequency and high-voltage reactance device as claimed in claim 1, it is characterised in that: described first insulating barrier (91) Using the mode of graded insulation, the layer insulation of adjacent high-tension coil (41) being divided into N level, N is natural number, and each class B insulation is adopted With different isolation material, the 1st layer conductor coiling to 1/N around long when stop coiling, hold the 1st grade of 1/N insulation;Further around Make the 2nd section of 1/N layer line, hold the 2nd grade of 1/N insulation;By that analogy, last coiling n-th 1/N layer line, hold N class B insulation.
10. Large Copacity dry type high-frequency and high-voltage reactance device as claimed in claim 9, it is characterised in that: as claimed in claim Large Copacity dry type high-frequency and high-voltage reactance device, it is characterised in that: described N value is 2-8.
CN201620388564.1U 2016-03-18 2016-05-04 A kind of Large Copacity dry type high-frequency and high-voltage reactance device Active CN205680523U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106952723A (en) * 2017-04-12 2017-07-14 张艳雪 A kind of technique for coiling of dry reactor coil

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106952723A (en) * 2017-04-12 2017-07-14 张艳雪 A kind of technique for coiling of dry reactor coil

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