CN108711502A

CN108711502A - A kind of annular power transformer manufacturing process and annular power transformer

Info

Publication number: CN108711502A
Application number: CN201810893407.XA
Authority: CN
Inventors: 张立宝; 刘国平
Original assignee: Qingzhou Baoli Electronic Co Ltd
Current assignee: Qingzhou Baoli Electronic Co Ltd
Priority date: 2018-08-07
Filing date: 2018-08-07
Publication date: 2018-10-26

Abstract

The present invention relates to a kind of annular power transformer manufacturing process and annular power transformers, change ring-shaped transformer it is traditional successively successively it is full around winding mode, enough gaps are reserved in the starting point and end point of every layer of winding, fan-shaped interval is formed on iron core, ensure that every layer of upper safe distance enough between the maximum starting point of pressure difference and end point；Meanwhile it being respectively provided with layer insulation every layer of outside, further avoid layer short circuit；Meanwhile the manufacturing process of present invention combination annular core and adding overcurrent protection piece so that annular power transformer is improved in cost of manufacture, safety and service life, especially fundamentally solves the problems, such as winding interlayer, turn-to-turn short circuit.

Description

A kind of annular power transformer manufacturing process and annular power transformer

Technical field

The present invention relates to annular power transformers to manufacture field, specifically a kind of annular power transformer manufacture Technique and annular power transformer.

Background technology

In the application of electronic transformer, ring-shaped transformer is used mainly as power transformer and isolating transformer.Ring Type transformer is with its good output characteristics and anti-interference ability, the electronics more demanding applied to household appliance and other technologies In equipment.Although the performance of ring-shaped transformer is good, cost is higher, the iron core used in coiling ring-shaped transformer, that is, ring-like iron Core is the high major reason of transformer cost.Applicant in this case applied in 2017 and obtains the entitled " a kind of ring-like of mandate Iron core ", Patent No. " 201720350580.6 " utility model patent the high problem of iron core cost, the technology has been solved perfectly Scheme makes the double winding band of combined type, winding forms ring-like iron by carrying out recycling processing to waste and old silicon steel strip, corner material Core significantly reduces the cost of ring-shaped transformer.

Other than cost problem, how to improve the security performance of ring-like power transformer becomes the industry and this case application The technical barrier that people's next step emphasis solves.In order to solve safety problem, applicant in this case applied and was authorized in 2017 Entitled " a kind of resistance to short circuit, anti-lightning strike power transformer ", Patent No. " 201720320574.0 " utility model patent In, overcurrent protection piece is arranged by the outer layer in transformer, overcurrent protection piece is connected on primary and/or secondary windings, is borrowed Help the overcurrent protection of overcurrent protection piece, Self-resetting, resistance to high current and anti-lightning strike advantage, when there is line short or lightning stroke, Protected transformer winding moment current limliting can be damaged so as to avoid overcurrent, realizes resistance to short circuit and anti-lightning strike purpose, After fault clearance, transformer can resume work normality automatically, to realize recycling-guard.

Although can be adequately protected to transformer at winding " overcurrent " by concatenating overcurrent protection piece, not It can solve the dielectric strength of ring-shaped transformer iron core and adjacent winding（Lateral isolation）Between primary winding layers and layer, circle and circle （Longitudinal insulation）The problem of.Winding inter-turn, interlayer electric discharge arcing can destroy the insulating layer between winding and iron core, and it is strong anti-electricity occur Degree（Lateral isolation）Decline even short circuit.More seriously, when umber of turn is more, short-circuit the number of turns is within the reasonable number of turns When, transformer electrical property remains to work normally, i.e., the short circuit of winding small part the number of turns when have no effect on transformer overall performance and It uses.But the insulating layer between the winding of transformer and iron core or adjacent winding is unconsciously being destroyed, this When transformer continued to run in great hidden danger, easily cause safety accident.How fundamentally to solve the problems, such as this, need from The manufacturing process of transformer is set about.

In traditional handicraft, in order to meet the requirement of transformer dielectric strength, generally by after transformer core paint-dipping drying, so Afterwards according still further to UL'VDE'The insulation number of plies and creepage distance of the requirements of the national standard such as GB, in iron core outer cladding respective insulation layers, it Afterwards further around coil windings processed.Traditional handicraft performs the requirement of various countries' national standard well, but in actual application, still has very After being chiefly used in whole set equipment, the defective products of machine is fallen after carry load work successively as time went on, the failure through dissection performance is former Because：The heat that interlayer or turn-to-turn short circuit flying fox generate, burns the insulating layer of cladding, anti-so as to cause winding and winding or iron core Electricity is bad, and winding itself short circuit is caused to burn transformer when serious.

Traditional handicraft can only solve dielectric strength between winding and iron core from Theoretical Design（Lateral isolation）The problem of, but It is that, due to the particularity of ring-shaped transformer structure, iron core is in the inside of winding, and no other shapes of transformer of the image of Buddha is the same, The underproof product testing of pressure resistance is come out with pressure-resistant instrument.

In addition, more since existing wire winding and method still can inevitably in the fabrication process（Such as：Storage The reasons such as line, unwrapping wire, tension）Winding wire insulation membrane damage is caused, therefore when transformer works, the winding of neighbouring iron core occurs Electromagnetic wire interlayer or turn-to-turn short circuit electric discharge arcing, to destroy the Insulation Problems of winding and iron core.That is, traditional handicraft is for change The core insulation number of plies of depressor solves the problems, such as, but it was verified that problem is frequently experienced in the outer layer winding adjacent with iron core Interlayer, turn-to-turn longitudinal insulation on.Therefore, in addition to ensure iron core the insulation number of plies other than, thoroughly solve ring-shaped transformer this The very corn of a subject, it is also necessary to set about from the technique for coiling of winding.

Currently, the coiling of ring-shaped transformer winding generally uses ring-like coil winding machine, in addition to the insulating film itself of electromagnetic wire Except pin hole objective reality, coil winding machine is easy to cause to draw to the insulating film of winding wire during storage line and in winding process Hinder, pull equivalent damage, great security risk is brought to transformer, but occurs insulating to electromagnetic wire in coil winding process Film, which wears or pulls, to be inevitable, and is solved the problems, such as the winding interlayer turn-to-turn short circuit of ring-shaped transformer, is needed to find more into one The reason of step, is made a concrete analysis of below.

For ring-like power transformer, layered windings are on ring structure iron core successively for armature winding and secondary windings, generally In the case of first around armature winding, then secondary windings is directly wound on to the outer layer of armature winding again.Wherein with secondary windings For one layer, as shown in Fig. 1, starting head is wound since one of ring-like position, i.e., since the A points in attached drawing 1, With the increase of upper coiling the number of turns at this layer, the induced voltage on winding gradually increases at work, on the same layer, originates head Pressure difference in pressure difference maximum namely attached drawing between end head between D1 points and D2 points is maximum, when needing coiling multilayer, the layer End head can be as next layer of beginning head, i.e., next layer of starting head is directly wound on the starting head of last layer namely D2 It puts and directly overlays the coiling for carrying out next layer on D1 points, it is clear that, when transformer is powered, the pressure difference of D2 points and D1 points is big, When two insulation breakdown point pressure differences of winding wire cause flying fox greatly, the phenomenon that being extremely susceptible to insulation breakdown, winding short circuit.Through Theoretical validation and practice test are crossed, the above problem is the basic original for causing ring-shaped transformer winding interlayer or turn-to-turn short circuit and burning Cause.

Invention content

The technical problem to be solved in the present invention is to provide a kind of annular power transformer manufacturing process and annular power transformations Device, the manufacturing process and transformer fundamentally solve the problems, such as winding interlayer turn-to-turn short circuit, are greatly reduced in manufacturing process Fraction defective, improve safety and the service life of transformer.

In order to solve the above technical problems, the annular power transformer manufacturing process of the present invention includes the following steps：

Step 1）Ring structure iron core is manufactured, iron core is optimized and insulation processing；

Step 2）Coiling armature winding takes armature winding electromagnetic wire, and the starting point of first layer is chosen on ring structure iron core, is surrounded The ring-like profile of iron core uniformly it is close around, until the layer terminates to cut in electromagnetic wire, gap is reserved between starting point and end point, Gap size is according to the voltage between winding first layer starting point and end point, according to the requirement of dielectric withstanding voltage tests voltage value, with Per the gaps AC1000V/50Hz not less than subject to 1mm, the starting head of primary coil and terminate head draw armature winding input line and Output line；

If the armature winding number of turns is less, armature winding uses fan-shaped single-layer winding,

If the armature winding number of turns is more to need coiling two layers, armature winding using fan-shaped single-layer winding twice, between two layers into The processing of row insulating wrapped takes armature winding electromagnetic wire, electromagnetic wire starting head to wear insulation tube, certain length is reserved, ring-like The starting point that first layer is chosen on iron core, around iron core ring-like profile uniformly it is close around, until the layer terminates to cut in electromagnetic wire, Gap is reserved between starting point and end point, gap size standard terminates head insulating tape with fan-shaped single-layer winding, electromagnetic wire It is fixed on and reserves gap centre position, wrap up one layer using wide insulating tape, then wrap up one layer with mylar again, carry out exhausted Second layer coiling is carried out after the processing of edge cladding；Second layer coiling uses and the starting point and end point of first layer same position, Gap size criteria is connected and is welded with second layer coiling starting head with fan-shaped single-layer winding, the end head of primary coil first layer coiling Wear casing insulation processing after tin, the first layer starting head and the second layer of primary coil terminate head draw armature winding input line and Output line；

If the armature winding number of turns needs coiling multilayer, armature winding to use repeatedly fan-shaped single-layer winding, carried out between two layers when more Insulating wrapped processing takes armature winding electromagnetic wire, electromagnetic wire starting head to wear insulation tube, certain length is reserved, in ring-like iron The starting point that first layer is chosen on core, the ring-like profile around iron core are uniformly close around until the layer terminates to cut in electromagnetic wire, rising Gap is reserved between initial point and end point, for gap size standard with fan-shaped single-layer winding, it is solid that electromagnetic wire terminates head insulating tape Due to reserving gap centre position, one layer is wrapped up using wide insulating tape, then one layer is wrapped up with mylar again, insulate Second layer coiling is carried out after cladding processing；Second layer coiling uses and the starting point and end point of first layer same position, gap Size criteria is with fan-shaped single-layer winding, and the end head of primary coil first layer coiling is connected with second layer coiling starting head and scolding tin After wear casing insulation processing, be fixed on insulating tape and reserve gap centre position, using wide insulating tape wrap up one layer, so One layer is wrapped up with mylar again afterwards, third layer coiling is carried out after carrying out insulating wrapped processing；Third layer coiling uses and second The starting point and end point of layer same position, gap size standard is the same as fan-shaped single-layer winding, the knot of primary coil second layer coiling Beam head connects and is worn after scolding tin casing insulation processing with third layer coiling starting head, is fixed on and is reserved in gap with insulating tape Between position, use wide insulating tape to wrap up one layer, the n-th layer coiling that carries out the 4th layer in this way ..., until around sufficient transformation Device armature winding designs the number of turns, and the end head of N-1 layer coiling and n-th layer coiling originate that head connects and that casing is worn after scolding tin is exhausted Edge processing, is fixed on insulating tape and reserves gap centre position, and the first layer starting head and n-th layer of primary coil terminate head and draw Go out armature winding input line and output line；

Step 3）Insulating wrapped processing is carried out to armature winding outer layer；

Step 4）Coiling secondary windings, if the secondary windings number of turns is less, secondary windings takes secondary using fan-shaped single-layer winding Rewinding magnet-wire chooses the starting point of first layer on ring structure iron core, and the ring-like profile around iron core is uniformly close around until should Layer terminates to cut in electromagnetic wire, reserves gap between starting point and end point, gap size according to winding first layer starting point with Voltage between end point is not less than 1mm with every gaps AC1000V/50Hz according to the requirement of dielectric withstanding voltage tests voltage value Standard, the starting head and end head of secondary coil draw secondary windings input line and output line；

If the secondary windings number of turns is more to need coiling two layers, secondary windings using fan-shaped single-layer winding twice, between two layers into The processing of row insulating wrapped takes secondary windings electromagnetic wire, electromagnetic wire starting head to wear insulation tube, certain length is reserved, ring-like The starting point that first layer is chosen on iron core, around iron core ring-like profile uniformly it is close around, until the layer terminates to cut in electromagnetic wire, Gap is reserved between starting point and end point, gap size standard terminates head insulating tape with fan-shaped single-layer winding, electromagnetic wire It is fixed on and reserves gap centre position, wrap up one layer using wide insulating tape, then wrap up one layer with mylar again, carry out exhausted Second layer coiling is carried out after the processing of edge cladding；Second layer coiling uses and the starting point and end point of first layer same position, Gap size criteria is connected and is welded with second layer coiling starting head with fan-shaped single-layer winding, the end head of secondary coil first layer coiling Sleeve-penetrating insulation processing after tin, the first layer starting head and the second layer of secondary coil terminate head and draw secondary windings input line and defeated Outlet；

If the secondary windings number of turns needs coiling multilayer, secondary windings to use repeatedly fan-shaped single-layer winding, carried out between two layers when more Insulating wrapped processing takes secondary windings electromagnetic wire, electromagnetic wire starting head to wear insulation tube, certain length is reserved, in ring-like iron The starting point that first layer is chosen on core, the ring-like profile around iron core are uniformly close around until the layer terminates to cut in electromagnetic wire, rising Gap is reserved between initial point and end point, for gap size standard with fan-shaped single-layer winding, it is solid that electromagnetic wire terminates head insulating tape Due to reserving gap centre position, one layer is wrapped up using wide insulating tape, then one layer is wrapped up with mylar again, insulate Second layer coiling is carried out after cladding processing；Second layer coiling uses and the starting point and end point of first layer same position, gap Size criteria is with fan-shaped single-layer winding, and the end head of secondary coil first layer coiling is connected with second layer coiling starting head and scolding tin Sleeve-penetrating insulation processing afterwards is fixed on insulating tape and reserves gap centre position, wraps up one layer using wide insulating tape, then One layer is wrapped up with mylar again, third layer coiling is carried out after carrying out insulating wrapped processing；Third layer coiling use and the second layer The starting point and end point of same position, gap size standard is the same as fan-shaped single-layer winding, the end of secondary coil second layer coiling Head connects and is worn after scolding tin casing insulation processing with third layer coiling starting head, is fixed on and is reserved among gap with insulating tape Position wraps up one layer, in this way the 4th layer of progress ... n-th layer coiling, until around sufficient transformer using wide insulating tape Secondary windings designs the number of turns, and the end head of N-1 layers of coiling is connected with n-th layer coiling starting head and sleeve-penetrating insulation position after scolding tin Reason, is fixed on insulating tape and reserves gap centre position, and the first layer starting head and n-th layer of secondary coil terminate head extraction Armature winding input line and output line；

Step 5）Insulating wrapped processing is carried out to secondary windings outer layer, transformer coiling process is completed.

Wherein, step 1）Middle manufacture annular core includes specifically：

Step 1.1.1）Silicon steel waste material is taken, classifies according to strip and corner material, strip is processed into wide type strip and narrow band respectively Material, the sheet corner material that corner material is processed into uniform shapes, narrow strip is consistent with wide type strip length, the width of wide type strip and The consistency of thickness of iron core, the width of narrow strip are less than a quarter of wide type strip width；

Step 1.1.2）Each sheet corner material is spliced successively and to be laid in wide type strip along the length direction of wide type strip positive Middle part, forms band-like corner material splice region, and two narrow strips are laid in wide type strip front on the position on two sides edge And form two in the both sides of corner material splice region and enclose edge, composite-type rolling is formed around band；

Step 1.1.3）Multistage combined winding band is taken, starts to wind annular core using up- coiler, after having rolled up wherein one again Another is docked, until annular core reaches design outer diameter, is at this time welded the initiating terminal for winding band and end with argon arc welding solid Fixed, annular core manufacture is completed.

Step 1）In include specifically to the optimization processing of iron core：

Step 1.2.1）Deburring and chamfering, electricity consumption grinder tool grind off burr and chamfering on iron core

Step 1.2.2）Heat treatment, the ring structure iron core of winding is heat-treated, the stress in winding process is removed；

Step 1.2.3）Dipping lacquer is simultaneously dried, and iron core soaks insulated paint, and drop is dried again after drying in the air.

Step 1）In include specifically to the insulation processing of iron core：

Step 1.3.1）The annular corner angle of iron core are frustrated with rotation and polish the arc angling that radius is 2mm and reuses a grade wall adhesive tape Protect the corner angle of iron core；Or the upper and lower part of annular core is covered using ring shield；

Step 1.3.2）1-2 layers are wrapped up using mylar, then wraps up 1 layer with wide insulating tape again.

Step 2）Step 5）Described in insulating wrapped processing be specifically：Coat 1-2 strata ester fiber films；Or first make Then the corner angle that winding is protected with shelves wall adhesive tape reuse mylar and wrap up 1-2 layers.

Step 2）With step 4）Described in splice insulation processing include specifically：At the position in gap, by last layer The end head of coil, by connecting simultaneously scolding tin, is then socketed insulating sleeve, and bury and overlay on interlayer with the starting head of next layer line circle In insulating layer.

Step 5）Further include additionally being set again in outermost layer additional after carrying out insulating wrapped processing to secondary windings outer layer Insulating layer, in supplemental dielectric layer laying can homing position type overcurrent protection piece and overcurrent protection piece be arranged between each layer winding reserves At gap position；Overcurrent protection piece is connected on armature winding or connects on the secondary winding.

The supplemental dielectric layer includes inside and outside two layers of insulating paper, and primary insulation paper is first looped around the outer of transformer body On anchor ring, overcurrent protection piece is then laid at the interstitial site of winding, welds circuit in overcurrent protection on piece, then around outer layer Insulating paper between overcurrent protection piece is covered in inside and outside two layers of insulating paper, then in outermost layer 1-2 layers of insulation film of wrapping, and draws Go out primary input line, primary output line, secondary input line, secondary output line.

The annular power transformer of the present invention includes annular core, armature winding and secondary windings, is structurally characterized in that just Grade every layer of coil starting point of winding position is identical, the position of every layer of coil end point is identical, starting point and end point it Between there are gap, gap size is according to the voltage between winding first layer starting point and end point, according to dielectric withstanding voltage tests electricity The requirement of pressure value is subject to every gaps AC1000V/50Hz not less than 1mm；Insulating materials and shape are coated on every layer of armature winding At interlayer insulating film, primary coil head and the tail are sequentially connected in series and draw primary input line and primary output line on each layer；Secondary windings The starting point of every layer of coil and end point position are identical as armature winding, and insulating materials is coated simultaneously on every layer of secondary windings Interlayer insulating film is formed, secondary coil head and the tail are sequentially connected in series and draw secondary input line and secondary output line on each layer.

The annular core is formed by composite-type rolling around tape wrapping, which is double-layer structure, bottom one around band Whole width type strip, top layer be the splicing bed of material being spliced by particle, splice the bed of material be spliced by polylith sheet corner material or It is spliced by a plurality of narrow strip or is spliced by two narrow strips and polylith sheet corner material.

For the insulation processing of iron core, the property at parts of edges and corners of the annular core is arc angling and property at parts of edges and corners is coated with Shelves wall adhesive tape is also coated with insulating thin layer and wide insulating cement belt on annular core successively in the outer layer of shelves wall adhesive tape.Alternatively, The upper and lower part of the annular core is arranged with ring shield, and the outer layer on annular core in ring shield also coats successively There are insulating thin layer and wide insulating cement belt.

Interlayer insulating film ensures winding interlayer insulation performance, specifically, the interlayer for protecting every layer of winding Insulating layer is insulating thin layer or for the shelves wall adhesive tape layer that is coated on winding property at parts of edges and corners and is coated on outside grade wall adhesive tape layer Insulating thin layer.

The outermost layer of transformer body additionally sets supplemental dielectric layer again, in supplemental dielectric layer laying can the overcurrent of homing position type protect Bluff piece and overcurrent protection piece are arranged at the interstitial site that each layer winding reserves；Overcurrent protection piece be connected on armature winding or Series connection is on the secondary winding；Insulating layer includes inside and outside two layers of insulating paper and is coated on outermost insulating coating, and overcurrent is protected Bluff piece setting is between two layers of annular insulating paper

The manufacturing process and annular power transformer of the present invention has the advantages that：

1）Change ring-shaped transformer it is traditional successively successively it is full around winding mode, in every layer of starting point and end point of winding Reserve enough gaps, form fan-shaped interval on iron core, ensure that every layer of upper maximum starting point of pressure difference and end point it Between enough safe distance；Meanwhile it being respectively provided with layer insulation every layer of outside, further avoid layer short circuit；From root Solves the problems, such as winding interlayer turn-to-turn short circuit on this；

2）Annular core is made around band using composite-type rolling, it is sufficiently effective that waste and old silicon steel material is utilized, it significantly reduces into This；Base band of the wide type strip as winding, the splicing bed of material can include individually sheet corner material or include individually narrow strip, Huo Zheyou Two narrow strips are formed in the positive both sides of base band encloses edge, and middle part is spliced to form band-like corner material using corner material of different shapes Splice region, three kinds of modes can be selected flexibly, and the annular for needing specification is finally obtained in such a way that this kind of bilayer is successively wound Iron core；Wide type strip and narrow strip obtain after being processed by waste and old silicon strip, and sheet corner material can then be passed through by waste and old corner material It is simple to cut rear directly obtain；

3）The outermost layer in transformer is arranged in overcurrent protection piece, and makes into a single integrated structure, setting double hyer insulation with transformer Simultaneously coordinated insulation clad carries out insulation and heat-insulated protection to folder layer to overcurrent protection piece, and overcurrent protection piece is avoided to be produced in action Raw high temperature impacts adjacent winding wire, and insulated heat and protection effect are good；Meanwhile the setting of overcurrent protection piece is each On the position in the gap that layer winding reserves so that the safe distance of bigger is left between overcurrent protection piece and winding, meanwhile, mistake It flows between screening glass and iron core there are multiple interlayer insulating films, also avoids it and insulation of iron core is impacted, it is seen then that overcurrent The position setting of screening glass further ensures insulation and heat insulation；Functionally, by the overcurrent protection of overcurrent protection piece, Self-resetting, resistance to high current and anti-lightning strike advantage can be to protected transformer winding wink when there is line short or lightning stroke Between current limliting, damaged so as to avoid overcurrent, realize resistance to short circuit and anti-lightning strike purpose, after fault clearance, transformer can from Dynamic normality of resuming work avoids the wasting of resources to realize recycling-guard.

In conclusion the present invention changes traditional winding mode, in conjunction with annular core manufacturing process and add overcurrent Screening glass so that annular power transformer is improved in cost of manufacture, safety and service life, especially from root Solve the problems, such as winding interlayer, turn-to-turn short circuit on this.

Description of the drawings

Invention is further described in detail with reference to the accompanying drawings and detailed description：

Fig. 1 is the structural schematic diagram of ring-shaped transformer tradition winding mode；

Fig. 2 is the structural schematic diagram of the ring-shaped transformer winding mode of the present invention；

Fig. 3 is multilayer sector in the present invention around line winding first layer winding structure schematic diagram；

Fig. 4 is structural schematic diagram after multilayer sector winding interlayer insulation processing in the present invention；

Fig. 5 is two layers of fan-shaped coiling winding magnetic wire mode of connection structural schematic diagram in the present invention；

Fig. 6 is multilayer sector coiling winding magnetic wire mode of connection structural schematic diagram in the present invention；

Fig. 7 is the structural schematic diagram of annular core in the present invention；

Fig. 8 is the portions C enlarged structure schematic diagram in Fig. 7；

Fig. 9 is the external structure schematic diagram of ring-shaped transformer of the present invention.

Specific implementation mode

With reference to attached drawing, annular power transformer manufacturing process of the invention includes the following steps：

Step 1）Ring structure iron core is manufactured, iron core is optimized and insulation processing.

Step 2）Coiling armature winding, if the armature winding number of turns is less, armature winding is taken using fan-shaped single-layer winding Armature winding electromagnetic wire chooses the starting point of first layer on ring structure iron core, and the ring-like profile around iron core is uniformly close around directly Terminate to cut in electromagnetic wire to the layer, gap is reserved between starting point and end point, gap size is originated according to winding first layer Voltage between point and end point is not less than according to the requirement of dielectric withstanding voltage tests voltage value with every gaps AC1000V/50Hz Subject to 1mm, the starting head and end head of primary coil draw armature winding input line and output line；

If the armature winding number of turns needs coiling multilayer, armature winding to use repeatedly fan-shaped single-layer winding, carried out between two layers when more Insulating wrapped processing takes armature winding electromagnetic wire, electromagnetic wire starting head to wear insulation tube, certain length is reserved, in ring-like iron The starting point that first layer is chosen on core, the ring-like profile around iron core are uniformly close around until the layer terminates to cut in electromagnetic wire, rising Gap is reserved between initial point and end point, for gap size standard with fan-shaped single-layer winding, it is solid that electromagnetic wire terminates head insulating tape Due to reserving gap centre position, one layer is wrapped up using wide insulating tape, then one layer is wrapped up with mylar again, insulate Second layer coiling is carried out after cladding processing；Second layer coiling uses and the starting point and end point of first layer same position, gap Size criteria is with fan-shaped single-layer winding, and the end head of primary coil first layer coiling is connected with second layer coiling starting head and scolding tin Sleeve-penetrating insulation processing afterwards is fixed on insulating tape and reserves gap centre position, wraps up one layer using wide insulating tape, then One layer is wrapped up with mylar again, third layer coiling is carried out after carrying out insulating wrapped processing；Third layer coiling use and the second layer The starting point and end point of same position, gap size standard is the same as fan-shaped single-layer winding, the end of primary coil second layer coiling Head connects and is worn after scolding tin casing insulation processing with third layer coiling starting head, is fixed on and is reserved among gap with insulating tape Position wraps up one layer, in this way the 4th layer of progress ... n-th layer coiling, until around sufficient transformer using wide insulating tape Armature winding designs the number of turns, and the end head of N-1 layers of coiling is connected with n-th layer coiling starting head and sleeve-penetrating insulation position after scolding tin Reason, is fixed on insulating tape and reserves gap centre position, and the first layer starting head and n-th layer of primary coil terminate head and draw just Grade winding input line and output line.

Wherein, according to the special circular contour design feature of ring-shaped transformer, adjacent two circles coil is arranged in fan-shaped, because This, the starting point and end point of this case coil are subject in the position on circular contour inner ring namely Fig. 2 with circular contour The A points of inside are starting point, and the B points on the inside of circular contour are end point.

Step 3）Insulating wrapped processing is carried out to armature winding outer layer.

Step 4）Coiling secondary windings, if the secondary windings number of turns is less, secondary windings is taken using fan-shaped single-layer winding Secondary windings electromagnetic wire chooses the starting point of first layer on ring structure iron core, and the ring-like profile around iron core is uniformly close around directly Terminate to cut in electromagnetic wire to the layer, gap is reserved between starting point and end point, gap size is originated according to winding first layer Voltage between point and end point is not less than according to the requirement of dielectric withstanding voltage tests voltage value with every gaps AC1000V/50Hz Subject to 1mm, the starting head and end head of secondary coil draw secondary windings input line and output line；

If the secondary windings number of turns needs coiling multilayer, secondary windings to use repeatedly fan-shaped single-layer winding, carried out between two layers when more Insulating wrapped processing takes secondary windings electromagnetic wire, electromagnetic wire starting head to wear insulation tube, certain length is reserved, in ring-like iron The starting point that first layer is chosen on core, the ring-like profile around iron core are uniformly close around until the layer terminates to cut in electromagnetic wire, rising Gap is reserved between initial point and end point, for gap size standard with fan-shaped single-layer winding, it is solid that electromagnetic wire terminates head insulating tape Due to reserving gap centre position, one layer is wrapped up using wide insulating tape, then one layer is wrapped up with mylar again, insulate Second layer coiling is carried out after cladding processing；Second layer coiling uses and the starting point and end point of first layer same position, gap Size criteria is with fan-shaped single-layer winding, and the end head of secondary coil first layer coiling is connected with second layer coiling starting head and scolding tin Sleeve-penetrating insulation processing afterwards is fixed on insulating tape and reserves gap centre position, wraps up one layer using wide insulating tape, then One layer is wrapped up with mylar again, third layer coiling is carried out after carrying out insulating wrapped processing；Third layer coiling use and the second layer The starting point and end point of same position, gap size standard is the same as fan-shaped single-layer winding, the end of secondary coil second layer coiling Head is connected with third layer coiling starting head and sleeve-penetrating insulation processing after scolding tin, is fixed on insulating tape and reserves gap interposition It sets, wraps up one layer using wide insulating tape, in this way the 4th layer of progress ... n-th layer coiling, until around sufficient transformer The end head of the grade Winding Design number of turns, N-1 layers of coiling connects with n-th layer coiling starting head and wears casing insulation position after scolding tin Reason, is fixed on insulating tape and reserves gap centre position, and the first layer starting head and n-th layer of secondary coil terminate head extraction Armature winding input line and output line.

Step 5）Insulating wrapped processing is carried out to secondary windings outer layer, transformer coiling is completed.

Step 1）Middle manufacture annular core includes specifically：

Step 1）In include specifically to the optimization processing of iron core：

Step 1）In include specifically to the insulation processing of iron core：

Step 2）Step 5）Described in insulating wrapped processing the step of it is identical, be specifically：Coat 1-2 strata ester fibers Film；Or the corner angle of winding are first protected using shelves wall adhesive tape, it then reuses mylar and wraps up 1-2 layers.

Step 2）With step 4）Described in splice insulation processing include specifically：At the position in gap, by coil Head, the input line for terminating head and coil, output line are originated by soldering short circuit, is then socketed insulating sleeve, and bury and overlay on insulation In layer.As shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, for the coil on the different layers of same winding, using F1 as first layer Originating head, then E1 is the end head of first layer, after carrying out layer insulation processing, the sector by the starting head that F2 is the second layer Single layer coiling second layer coil, then E2 is the end head of the second layer, after second layer coil-winding, E1 and F2 solderings is short It connects, is then socketed insulating sleeve, and bury and cover in a insulating layer, after carrying out layer insulation, opened by the starting head that F3 is third layer Begin fan-shaped single layer coiling third layer coil, then E3 is the end head of third layer, after third layer coil-winding, by E2 and F3 tin Short circuit is welded, is then socketed insulating sleeve, and bury and cover in a insulating layer, after carrying out layer insulation, carries out the 4th in this way Layer ... n-th layer coiling, until around the sufficient transformer secondary output Winding Design number of turns, end the head EN-1 and N of N-1 layers of coiling Layer coiling starting head FN solderings connection, joint area socket insulating sleeve can play protective action so that same winding it is every Layer coil head and the tail connect, and realize coil series winding.Meanwhile joint area being arranged in the interstitial site of winding, it can be further from Coil windings ensure that enough safe distances.

Step 5）Further include additionally being set again in outermost layer additional after carrying out insulating wrapped processing to secondary windings outer layer Insulating layer, in supplemental dielectric layer laying can homing position type overcurrent protection piece and overcurrent protection piece be arranged between each layer winding reserves At gap position；Overcurrent protection piece is connected on armature winding or connects on the secondary winding.Wherein, supplemental dielectric layer includes Primary insulation paper, is first looped around on the outer ring surface of transformer body by inside and outside two layers of insulating paper, then in the interstitial site of winding Laying overcurrent protection piece in place's welds circuit in overcurrent protection on piece, then around outer layer insulation paper, overcurrent protection piece is covered in Between inside and outside two layers of insulating paper, then outermost layer wrap up 1-2 layer insulation film, and draw primary input line, primary output line, Secondary input line, secondary output line.

The annular power transformer of the present invention includes annular core, armature winding and secondary windings, on every layer of armature winding The position of coil starting point A is identical, the position of every layer of coil end point B is identical, there are gap between starting point and end point, Gap size is according to the voltage between winding first layer starting point A and end point B, according to wanting for dielectric withstanding voltage tests voltage value It asks, is subject to every gaps AC1000V/50Hz not less than 1mm；Insulating materials is coated on every layer of armature winding and to form interlayer exhausted Edge layer, primary coil head and the tail are sequentially connected in series and draw primary input line and primary output line on each layer；Every layer of secondary windings is reached the standard grade The starting point A and end point location A of circle are identical as armature winding, and insulating materials and forming layer are coated on every layer of secondary windings Between insulating layer, secondary coil head and the tail are sequentially connected in series and draw secondary input line and secondary output line on each layer.

Annular core is formed by composite-type rolling around tape wrapping, which is double-layer structure around band, and bottom is one whole Wide type strip 1, top layer are the splicing bed of material being spliced by particle, splicing the bed of material be spliced by polylith sheet corner material 3 or by A plurality of narrow strip is spliced into or is spliced by two narrow strips 2 and polylith sheet corner material 3.

The property at parts of edges and corners of annular core is arc angling and property at parts of edges and corners is coated with a grade wall adhesive tape, in shelves on annular core The outer layer of wall adhesive tape is also coated with insulating thin layer and wide insulating cement belt successively.

The upper and lower part of annular core is arranged with ring shield, on annular core the outer layer of ring shield also successively It is coated with insulating thin layer and wide insulating cement belt.

Interlayer insulating film is insulating thin layer or for the shelves wall adhesive tape layer that is coated on winding property at parts of edges and corners and is coated on Insulating thin layer outside shelves wall adhesive tape layer.

The outermost layer of transformer body additionally sets supplemental dielectric layer again, in supplemental dielectric layer laying can the overcurrent of homing position type protect Bluff piece 4 and overcurrent protection piece 4 are arranged at the interstitial site that each layer winding reserves；Overcurrent protection piece 4 is connected on armature winding Or series connection is on the secondary winding

Supplemental dielectric layer includes inside and outside two layers of insulating paper 5 and is coated on outermost insulating coating 6, and overcurrent protection piece 4 is set It sets between two layers of annular insulating paper 5.

Wherein, for the concrete structure of annular core, in entitled " a kind of ring structure iron core ", the Patent No. authorized It is described in detail in the utility model patent of " 201720350580.6 ", details are not described herein.In addition, for overcurrent protection piece 4 Specific line connecting relation, in entitled " a kind of resistance to short circuit, anti-lightning strike power transformer ", the Patent No. authorized It is described in detail in the utility model patent of " 201720320574.0 ", details are not described herein.

The invention has the advantages that effect：

In conclusion the present invention is not limited to above-mentioned specific implementation modes.Those skilled in the art are not departing from the present invention's Under the premise of spirit and scope, several change or modification can be done.Above-mentioned change or modification each fall within protection scope of the present invention.

Claims

1. a kind of annular power transformer manufacturing process, it is characterized in that including the following steps：

If the armature winding number of turns is less, armature winding is using fan-shaped single-layer winding；

If the armature winding number of turns is more to need coiling two layers, armature winding using fan-shaped single-layer winding twice, between two layers into The processing of row insulating wrapped takes armature winding electromagnetic wire, electromagnetic wire starting head to wear insulation tube, certain length is reserved, ring-like The starting point that first layer is chosen on iron core, around iron core ring-like profile uniformly it is close around, until the layer terminates to cut in electromagnetic wire, Gap is reserved between starting point and end point, gap size standard terminates head insulating tape with fan-shaped single-layer winding, electromagnetic wire It is fixed on and reserves gap centre position, wrap up one layer using wide insulating tape, then wrap up one layer with mylar again, carry out exhausted Second layer coiling is carried out after the processing of edge cladding；Second layer coiling uses and the starting point and end point of first layer same position, Gap size criteria is with fan-shaped single-layer winding, and the end head of primary coil first layer coiling is connected with second layer coiling starting head and tin Postwelding sleeve-penetrating insulation processing, the first layer starting head and the second layer of primary coil terminate head and draw armature winding input line and defeated Outlet；

If the armature winding number of turns needs coiling multilayer, armature winding to use repeatedly fan-shaped single-layer winding, carried out between two layers when more Insulating wrapped processing takes armature winding electromagnetic wire, electromagnetic wire starting head to wear insulation tube, certain length is reserved, in ring-like iron The starting point that first layer is chosen on core, the ring-like profile around iron core are uniformly close around until the layer terminates to cut in electromagnetic wire, rising Gap is reserved between initial point and end point, for gap size standard with fan-shaped single-layer winding, it is solid that electromagnetic wire terminates head insulating tape Due to reserving gap centre position, one layer is wrapped up using wide insulating tape, then one layer is wrapped up with mylar again, insulate Second layer coiling is carried out after cladding processing；Second layer coiling uses and the starting point and end point of first layer same position, gap Size criteria is with fan-shaped single-layer winding, and the end head of primary coil first layer coiling is connected with second layer coiling starting head and scolding tin Sleeve-penetrating insulation processing afterwards is fixed on insulating tape and reserves gap centre position, wraps up one layer using wide insulating tape, then One layer is wrapped up with mylar again, third layer coiling is carried out after carrying out insulating wrapped processing；Third layer coiling use and the second layer The starting point and end point of same position, gap size standard is the same as fan-shaped single-layer winding, the end of primary coil second layer coiling Head is connected with third layer coiling starting head and sleeve-penetrating insulation processing after scolding tin, is fixed on insulating tape and reserves gap interposition It sets, one layer is wrapped up using wide insulating tape, in this way the 4th layer of progress ... n-th layer coiling, at the beginning of around sufficient transformer The end head of the grade Winding Design number of turns, N-1 layers of coiling connects with n-th layer coiling starting head and wears casing insulation position after scolding tin Reason, is fixed on insulating tape and reserves gap centre position, and the first layer starting head and n-th layer of primary coil terminate head and draw just Grade winding input line and output line；

Step 4）Coiling secondary windings takes secondary windings electromagnetic wire, and the starting point of first layer is chosen on ring structure iron core, is surrounded The ring-like profile of iron core uniformly it is close around, until the layer terminates to cut in electromagnetic wire, gap is reserved between starting point and end point, Gap size is according to the voltage between winding first layer starting point and end point, according to the requirement of dielectric withstanding voltage tests voltage value, with Per the gaps AC1000V/50Hz not less than subject to 1mm, the starting head of secondary coil and terminate head draw secondary windings input line and Output line；

If the secondary windings number of turns is less, secondary windings uses fan-shaped single-layer winding,

If the secondary windings number of turns needs coiling multilayer, secondary windings to use repeatedly fan-shaped single-layer winding, carried out between two layers when more Insulating wrapped processing takes secondary windings electromagnetic wire, electromagnetic wire starting head to wear insulation tube, certain length is reserved, in ring-like iron The starting point that first layer is chosen on core, the ring-like profile around iron core are uniformly close around until the layer terminates to cut in electromagnetic wire, rising Gap is reserved between initial point and end point, for gap size standard with fan-shaped single-layer winding, it is solid that electromagnetic wire terminates head insulating tape Due to reserving gap centre position, one layer is wrapped up using wide insulating tape, then one layer is wrapped up with mylar again, insulate Second layer coiling is carried out after cladding processing；Second layer coiling uses and the starting point and end point of first layer same position, gap Size criteria is with fan-shaped single-layer winding, and the end head of secondary coil first layer coiling is connected with second layer coiling starting head and scolding tin Sleeve-penetrating insulation processing afterwards is fixed on insulating tape and reserves gap centre position, wraps up one layer using wide insulating tape, then One layer is wrapped up with mylar again, third layer coiling is carried out after carrying out insulating wrapped processing；Third layer coiling use and the second layer The starting point and end point of same position, gap size standard is the same as fan-shaped single-layer winding, the end of secondary coil second layer coiling Head is connected with third layer coiling starting head and sleeve-penetrating insulation processing after scolding tin, is fixed on insulating tape and reserves gap interposition It sets, wraps up one layer using wide insulating tape, in this way the 4th layer of progress ... n-th layer coiling, until around sufficient transformer The end head of the grade Winding Design number of turns, N-1 layers of coiling connects with n-th layer coiling starting head and wears casing insulation position after scolding tin Reason, is fixed on insulating tape and reserves gap centre position, and the first layer starting head and n-th layer of secondary coil terminate head extraction Armature winding input line and output line；

2. annular power transformer manufacturing process as described in claim 1, it is characterized in that step 1）Middle manufacture annular core tool Body includes：

3. annular power transformer manufacturing process as described in claim 1, it is characterized in that step 1）In to the optimization of iron core at It manages and includes specifically：

4. annular power transformer manufacturing process as described in claim 1, it is characterized in that step 1）In to the insulation position of iron core It manages and includes specifically：

5. annular power transformer manufacturing process as described in claim 1, it is characterized in that step 2）Step 5）Described in insulate Cladding is handled：Coat 1-2 strata ester fiber films；Or the corner angle of winding are first protected using shelves wall adhesive tape, then again 1-2 layers are wrapped up using mylar；Step 2）With step 4）Described in splice insulation processing include specifically：Position in gap Place is set, by the end head of last layer coil and the starting head of next layer line circle by connecting and scolding tin, is then socketed insulating sleeve, And it buries and overlays in interlayer insulating film.

6. annular power transformer manufacturing process as described in claim 1, it is characterized in that step 5）Further include to secondary around After group outer layer carries out insulating wrapped processing, supplemental dielectric layer is additionally set again in outermost layer, being laid in supplemental dielectric layer can reset The overcurrent protection piece and overcurrent protection piece of formula are arranged at the interstitial site that each layer winding reserves；Overcurrent protection piece is connected on primary On winding or connect on the secondary winding；The supplemental dielectric layer includes inside and outside two layers of insulating paper, first by primary insulation paper ring It is wound on the outer ring surface of transformer body, overcurrent protection piece is then laid at the interstitial site of winding, in overcurrent protection on piece Circuit is welded, then around outer layer insulation paper, between overcurrent protection piece is covered in inside and outside two layers of insulating paper, then in outermost layer packet 1-2 layers of insulation film are pricked, and draw primary input line, primary output line, secondary input line, secondary output line.

7. a kind of annular power transformer, including annular core, armature winding and secondary windings, it is characterized in that the armature winding Every layer of coil starting point（A）Position is identical, every layer of coil end point（B）Position it is identical, starting point and end point it Between there are gap, gap size is according to winding first layer starting point（A）With end point（B）Between voltage, according to dielectric strength The requirement of test voltage value is subject to every gaps AC1000V/50Hz not less than 1mm；Insulation material is coated on every layer of armature winding Expect and formed interlayer insulating film, primary coil head and the tail are sequentially connected in series and draw primary input line and primary output line on each layer；It is secondary The starting point of grade every layer of coil of winding（A）And end point（A）Position is identical as armature winding, is wrapped on every layer of secondary windings It covers insulating materials and forms interlayer insulating film, secondary coil head and the tail are sequentially connected in series and draw secondary input line and secondary is defeated on each layer Outlet.

8. annular power transformer as claimed in claim 7, it is characterized in that the annular core by composite-type rolling around tape wrapping It forms, which is double-layer structure around band, and bottom is a whole wide type strip（1）, top layer is spliced by particle Splice the bed of material, the splicing bed of material is by polylith sheet corner material（3）It is spliced into or is spliced by a plurality of narrow strip or by two Narrow strip（2）With polylith sheet corner material（3）It is spliced into；The property at parts of edges and corners of the annular core is arc angling and corners Position is coated with a grade wall adhesive tape, and insulating thin layer and wide insulating tape are also coated with successively in the outer layer of shelves wall adhesive tape on annular core Layer.

9. annular power transformer as claimed in claim 7, it is characterized in that the upper and lower part of the annular core is arranged There is a ring shield, insulating thin layer and wide insulating cement belt are also coated with successively in the outer layer of ring shield on annular core；Or Person, the interlayer insulating film are insulating thin layer or for the shelves wall adhesive tape layer that is coated on winding property at parts of edges and corners and are coated on shelves Insulating thin layer outside wall adhesive tape layer.

10. annular power transformer as claimed in claim 7, it is characterized in that the outermost layer of transformer body additionally set again it is additional Insulating layer, in supplemental dielectric layer laying can homing position type overcurrent protection piece（4）And overcurrent protection piece（4）Setting is stayed in each layer winding At the interstitial site gone out；Overcurrent protection piece（4）It is connected on armature winding or connects on the secondary winding；The superinsulation Layer includes inside and outside two layers of insulating paper（5）And it is coated on outermost insulating coating（6）, overcurrent protection piece（4）It is arranged two The annular insulating paper of layer（5）Between.