CN202736677U - Seven-stepping iron core - Google Patents
Seven-stepping iron core Download PDFInfo
- Publication number
- CN202736677U CN202736677U CN 201220328437 CN201220328437U CN202736677U CN 202736677 U CN202736677 U CN 202736677U CN 201220328437 CN201220328437 CN 201220328437 CN 201220328437 U CN201220328437 U CN 201220328437U CN 202736677 U CN202736677 U CN 202736677U
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- windings
- iron core
- voltage windings
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Abstract
The utility model provides a seven-stepping iron core. A fan is arranged on a trolley, hold-down blocks are arranged at the upper part of the fan, iron cores are arranged in the hold-down blocks, low-voltage windings and high-voltage windings are sequentially arranged on an iron core column in a sleeving way, air channels are arranged between the high-voltage windings and the low-voltage windings, clamp pieces are arranged above the iron cores, high-voltage insulators at the upper ends of the clamp pieces are connected with high-voltage terminal blocks on the high-voltage windings, low-voltage terminal blocks at the left upper part are connected with the low-voltage windings, and low-voltage insulators are arranged among the low-voltage terminal blocks. Current I flowing across the low-voltage windings produces an alternating magnetic flux in the iron cores, so that an electromagnetic connection is built between the high-voltage windings and the low-voltage windings. According to the electromagnetic induction principle, an electrodynamic potential is inducted as long as the magnetic flux passes through the two windings, and the size of electrodynamic potential is in direct proportion to the turn number of the windings and the maximum value of the main magnetic flux. When a secondary side of the transformer is open-circuited, namely non-loaded, the short circuit voltages of a primary side and the secondary side are in direct proportion to the turn numbers of the low-voltage windings and the high-voltage windings, and the transformer achieves a purpose of transforming the voltages. The seven-stepping iron core has the characteristics of low noise, low waste cost and excellent performance.
Description
Technical field
The utility model relates to a kind of iron core, is specifically related to a kind of seven stepping iron cores.
Background technology
At present, existing iron core includes Multi joint, the seam of iron core has to loss that (no-load loss of transformer has magnetic hysteresis loss, eddy current loss and supplementary load loss form, supplementary load loss be by produce in core structure and the processing and manufacturing to improve core structure under the prerequisite of production technology be the key that reduces supplementary load loss improving, the practice and experimental results show that iron core stack mode and seam are that the principal element magnetic flux density is the important parameter that affects iron core no-load loss, because the lamination seam exists the gap magnetic flux to increase suddenly by the close rising magnetic resistance of seam crossing magnetic and causes the seam crossing attraction, amplitude, exciting current, the excitation capacity increase causes noise, the raising of loss and increase.Have experimental data proof when magnetic density during at 17T the magnetic flux density in three grades of seam cross-over connection laminations be that magnetic flux density is seldom to have magnetic flux to pass through equally to six in the 15T gaping of joints in the 18T Pyatyi seam cross-over connection lamination, the local loss that seven grades of seam experimental comparative analysis draw the more seaming zones of seam is lower, in order to reduce this impact, the form of seam is being updated, be developed to the Pyatyi seam by original secondary seam, this improvement has all produced good effect to the consumption reduction material-saving, yet, along with improving constantly of each side's standard, require transformer loss, the indices of reducing noise is stricter, existing Pyatyi joint form can not meet design requirement, and the mechanical strength of its seam crossing is low, noise is large, cost depletions is high.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of seven stepping iron cores, has strengthened the mechanical strength of seam crossing, has the advantages that noise is lower, cost depletions is low and performance is good.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of seven stepping iron cores, include dolly, dolly is provided with blower fan, and the top of blower fan is provided with briquetting, and briquetting inside is provided with iron core, iron core is provided with low pressure winding, high pressure winding outward successively, be provided with air flue between high pressure winding and low pressure winding, the top of iron core is provided with folder, and the high-tension insulator of folder upper end links to each other with the high-voltage line bank on the high pressure winding, the low pressure line bank of upper left quarter links to each other with the low pressure winding, is provided with low tension insulator between the low pressure line bank.
Described air flue quantity is at least 20～30.
The rear portion of described folder is provided with clamp insulation.
The beneficial effects of the utility model are:
The close reduction of the magnetic of seam crossing has solved the supplementary load loss increase that causes because of seam because the utility model has adopted novel seven stepping iron cores, the root problem that noise is high, and the while has also been improved the mechanical strength of seam crossing, and no-load loss descends, reducing noise 4db; So it is low to have low-loss, noise is little, and mechanical strength is high, volume trifle material characteristics; The problem that the compressive resistance that causes because of the insulation distance inequality of making things convenient for the convenient suit of coiling the high-low pressure winding to arrange evenly to have solved reduces; Reduce so have the low load loss of the little cost of volume, reducing noise, compressive resistance is high, and low office puts, and suit is convenient, the appearance looks elegant characteristics;
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the end view of Fig. 1.
The structural representation of Fig. 3 the utility model iron core and high pressure winding, low pressure winding and air flue.
Embodiment
Below in conjunction with accompanying drawing structural principle of the present utility model and operation principle are described in further detail.
Referring to Fig. 1,2,3, a kind of seven stepping iron cores, include dolly 11, dolly 11 is provided with blower fan 5, the top of blower fan 5 is provided with briquetting 4, briquetting 4 inside are provided with iron core 3, the iron core 3 outer low pressure windings 12 that are provided with successively, high pressure winding 2, between high pressure winding 2 and low pressure winding 12, be provided with air flue 13, air flue 13 has heat radiation, the effect of insulation, the top of iron core 3 is provided with folder 1, and the high-tension insulator 9 of folder 1 upper end links to each other with high-voltage line bank 8 on the high pressure winding 2, the low pressure line bank 7 of upper left quarter links to each other with low pressure winding 12, is provided with low tension insulator 6 between the low pressure line bank 7.
Described air flue 13 quantity are at least 20～30.
The rear portion of described folder 1 is provided with clamp insulation 10.
Operation principle of the present utility model is:
When high voltage side of transformer applies alternating voltage, this electric current of electric current I that flows through the low pressure winding can produce alternating flux in iron core, make low pressure winding and high pressure winding generation electromagnetic connection, according to the electromagnetic induction principle magnetic flux pass these two windings will induce electromotive force its size be directly proportional with the maximum of umber of turn and main flux.When the transformer secondary open circuit was namely unloaded, a secondary voltage was directly proportional with low pressure winding, high pressure umber of turn, and transformer plays the purpose of voltage of transformation.Transformer loss; Comprise no-load loss, and load loss, no-load loss is the magnetic hysteresis loss that comprises of iron core generation.Eddy current loss, supplementary load loss, magnetic hysteresis loss, eddy current loss is that material determines, and supplementary load loss are that the iron core manufacturing industry determines, and the increase of core loss can cause the iron core heating, and noise raises.Load loss is the line loss consumption, there are resistance in low pressure winding, high pressure winding, resistance be directly proportional with conductor length with sectional area be inversely proportional to electric current by the time resistance can consume certain power, this part loss becomes heat and consumes and cause coil temperature rise once high, reduces transformer useful life.
Claims (3)
1. stepping iron core, include dolly (11), dolly (11) is provided with blower fan (5), the top of blower fan (5) is provided with briquetting (4), briquetting (4) inside is provided with iron core (3), it is characterized in that, the outer low pressure winding (12) that is provided with successively of iron core (3), high pressure winding (2), between high pressure winding (2) and low pressure winding (12), be provided with air flue (13), the top of iron core (3) is provided with folder (1), the high-tension insulator (9) of folder (1) upper end links to each other with the high-voltage line bank (8) on the high pressure winding (2), the low pressure line bank (7) of upper left quarter links to each other with low pressure winding (12), is provided with low tension insulator (6) between the low pressure line bank (7).
2. a kind of seven stepping iron cores according to claim 1 is characterized in that, described air flue (13) quantity is at least 20～30.
3. a kind of seven stepping iron cores according to claim 1 is characterized in that the rear portion of described folder (1) is provided with clamp insulation (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220328437 CN202736677U (en) | 2012-07-09 | 2012-07-09 | Seven-stepping iron core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220328437 CN202736677U (en) | 2012-07-09 | 2012-07-09 | Seven-stepping iron core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202736677U true CN202736677U (en) | 2013-02-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220328437 Expired - Fee Related CN202736677U (en) | 2012-07-09 | 2012-07-09 | Seven-stepping iron core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202736677U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103413665A (en) * | 2013-08-16 | 2013-11-27 | 辽宁华冶集团发展有限公司 | High-power high-voltage frequency conversion oil-immersed rectifier transformer |
-
2012
- 2012-07-09 CN CN 201220328437 patent/CN202736677U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103413665A (en) * | 2013-08-16 | 2013-11-27 | 辽宁华冶集团发展有限公司 | High-power high-voltage frequency conversion oil-immersed rectifier transformer |
| CN103413665B (en) * | 2013-08-16 | 2016-03-30 | 辽宁华冶集团发展有限公司 | A kind of high-power high voltage frequency conversion oil immersed type rectifier transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20150709 |
|
| EXPY | Termination of patent right or utility model |