CN1212628C - Mild steel wire transformer core - Google Patents
Mild steel wire transformer core Download PDFInfo
- Publication number
- CN1212628C CN1212628C CN 02103841 CN02103841A CN1212628C CN 1212628 C CN1212628 C CN 1212628C CN 02103841 CN02103841 CN 02103841 CN 02103841 A CN02103841 A CN 02103841A CN 1212628 C CN1212628 C CN 1212628C
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- transformer
- steel wire
- iron core
- mild steel
- core
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Abstract
The present invention relates to an iron core of a transformer, which is formed by siliconizing processing after wounded by low carbon steel wires. The present invention has low production cost, high magnetic conductibility, high material universality, light weight, small temperature rise and good combination performance; besides, eddy current loss is obviously less than that of a traditional laminated iron core. The present invention is suitable for matching with various electronic and power transformers. In addition, the present invention has the advantages of simple manufacturing process, low technology difficulty and convenient implementation.
Description
Technical field
Content of the present invention belongs to electrical engineering and electric apparatus manufacturing technology field, relates to a kind of manufacture craft and product of novel transformer iron core.
Background technology
Iron core is the key member that constitutes transformer magnetic circuit, and it is converted to magnetic energy to the electric energy of primary circuit, is converted to the electric energy of secondary circuit again by this magnetic energy, is the media of power conversion.The method of making transformer core in the prior art mostly is with the silicon steel sheet closed assembly or rolls.Defectives such as its product need pass through punching, the technical processs such as dress, clamping that change, and is formed with the magnetic circuit of seam air gap, because air gap can produce very big magnetic resistance in magnetic circuit, causes permeability reduction unshakable in one's determination, and iron loss increases, and is easy to heating, and running noises is big.Simultaneously,, increase the number of turn of coil and excitatory volt-ampere number, the manufacturing of transformer and operating cost are increased for overcoming the magnetic resistance that air gap causes.
The Chinese invention patent prospectus discloses a kind of " silicon steel wire wound transformer iron core " for CN1274934A number, the transformer core that is provided is a kind of no air gap closo iron core that is formed by the soft magnetism silicon steel wire wound with regular geometric cross section, under equal power condition, no air gap cross-sectional area unshakable in one's determination can be less than the cross-sectional area that the air-gap magnetic circuit iron core is arranged, or under the situation of same cross-sectional area iron core, reduce the umber of turn of circuit part in the no air-gap magnetic circuit transformer; The exciting current of no its circuit winding of air-gap magnetic circuit transformer correspondingly reduces.But because the ratio that this element of silicon adds in the silicon steel has a significant impact its quality, its amount is big more, and the resistance coefficient of silicon steel is big more, and eddy current loss is more little, and aging phenomenon is slow more.Yet the addition of silicon is big more, and the hardness of silicon steel is big more, and elongation and toughness are low more, and wire drawing is difficult more.The difficulty because the raising of hardness, silicon steel wire wound transformer iron core can become, particularly iron core is more little, just difficult more manufacturing.
Summary of the invention
The objective of the invention is to overcome the defective of above-mentioned prior art, a kind of mild steel wire transformer core is provided, solve the silicon steel silk and draw difficulty, the problem that coiling is difficult for.
The technical scheme that the present invention takes is according to the design of transformer requirement, pre-processed winding mold, then the mild steel wire with regular geometric cross section is wound on the winding mold, carrying out siliconising after the demoulding handles, as required the iron core of siliconising is carried out (or not carrying out) insulation impregnating and handle, promptly become the finished iron heart.The said regular geometric transverse cross-sectional profile of the present invention comprises: circular transverse cross-sectional profile, triangle transverse cross-sectional profile, regular hexagon transverse cross-sectional profile, square transverse cross-sectional profile.Mild steel wire comprises the electrical pure iron silk.
Adopt mild steel wire transformer core, can save silicon steel sheet rolling, open operations such as material, shearing, make the simplification of transformer manufacturing process, do not have leftover bits; Can increase the silicon content of core material, quality unshakable in one's determination is improved; Because siliconising increases the mild steel wire sheet resistance, can not be coated with insulating layer coating; Because coiling iron-core does not have the loss of seam air gap, has improved permeability, can reduce area of core section with respect to laminated core, save core material, and reduce the transformer iron loss, and reduce running noises; The transformer core stem can be made cylinder easily, saves the used copper material of coiling and reduces the transformer copper loss.
Description of drawings
Fig. 1 is a R deformation depressor provided by the invention schematic diagram unshakable in one's determination.
Fig. 2 is a shell type transformer provided by the invention schematic diagram unshakable in one's determination.
Fig. 3 is a three-phase transformer provided by the invention schematic diagram unshakable in one's determination.
Embodiment
Below in conjunction with drawings and Examples content of the present invention is described further
Embodiment one
As shown in Figure 1.According to the designing requirement of transformer, make R sections heart winding mold, close on mould mild steel wire, carry out siliconising after the demoulding and handle, after the siliconising according to transformer service conditions needs carry out (or not carrying out) insulation impregnating handle the R sections heart.Make transformer with the R sections heart many advantages are arranged: the iron core of circular section makes the average turn length of winding, and the copper resistance is little, and copper loss is little.Circular coiling, operational characteristic is good, and leakage inductance and distributed capacitance are little.Because iron core does not have seam, does not have air gap, magnetic resistance is little, and iron loss is little, and no-load current is little, and running noises is low.The R sections heart can be widely used in the production of single-phase transformer.
Embodiment two
Shell type transformer iron core, its structure as shown in Figure 2, to be that semicircular square frame is unshakable in one's determination by two cross sections form for it.Described square frame iron core is to use the mild steel wire coiling in semi-circular cross-section mould unshakable in one's determination, after the demoulding two square frame shape iron cores are combined and carry out siliconising and handle, carry out (or not carrying out) insulation impregnating according to transformer service conditions needs after the siliconising and handle, be the shell type transformer iron core.With this transformer of making unshakable in one's determination little the and little advantage of shell type transformer load leakage field of the unloaded leakage field of toroidal transformer is arranged promptly, promptly carry or its leakage field of no-load has only very little variation no matter have.Present embodiment can be widely used in various power transformers, is adapted to especially transformer leakage field and the demanding stereo set of distributed capacitance, precision instrument etc.
Embodiment three
Three-phase transformer iron core, its structure as shown in Figure 3, to be that semicircular square frame is unshakable in one's determination by three cross sections form for it.Described square frame iron core is to constitute in the mould of 60 degree angles at half round iron stem cross-sectional diameter and square frame plane, form with the mild steel wire coiling, after the demoulding three square frame iron cores are combined, carrying out siliconising handles, after the siliconising according to the needs of transformer service conditions, carry out (or not carrying out) insulation impregnating and handle, be the three-phase transformer iron core.Traditional blade inserting three-phase transformer iron core is in one plane, and the shortcoming of this structure is a three-phase magnetic loop imbalance, the A phase, and the magnetic loop of C phase is long, and the magnetic loop of B phase is shorter, can cause three-phase current unbalance like this.The three-phase magnetic loop of present embodiment iron core is equal fully, and the shortest, so that further reduce no-load current and no-load loss unshakable in one's determination, alleviates iron core weight, saves material.
Claims (3)
1, a kind of transformer core is characterized in that this iron core is that mild steel wire coiling with the regular geometric transverse cross-sectional profile forms, and the closo iron core of handling through siliconising.
2, transformer core as claimed in claim 1, the mild steel wire that it is characterized in that being used for coiling iron-core is the mild steel wire with circle, triangle, regular hexagon or square cross section.
3, according to claim 1,2 any one described transformer core, wherein mild steel wire comprises electrician's soft iron silk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02103841 CN1212628C (en) | 2002-04-02 | 2002-04-02 | Mild steel wire transformer core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02103841 CN1212628C (en) | 2002-04-02 | 2002-04-02 | Mild steel wire transformer core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1448964A CN1448964A (en) | 2003-10-15 |
| CN1212628C true CN1212628C (en) | 2005-07-27 |
Family
ID=28680029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02103841 Expired - Fee Related CN1212628C (en) | 2002-04-02 | 2002-04-02 | Mild steel wire transformer core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1212628C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021031191A1 (en) * | 2019-08-22 | 2021-02-25 | 深圳市大疆创新科技有限公司 | Iron core, electronic device, and electronic apparatus |
-
2002
- 2002-04-02 CN CN 02103841 patent/CN1212628C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1448964A (en) | 2003-10-15 |
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Addressee: Guo Qinglin Document name: Qualified notice of first instance |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |