CN104810144A - Iron core laminating process - Google Patents
Iron core laminating process Download PDFInfo
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- CN104810144A CN104810144A CN201510258507.1A CN201510258507A CN104810144A CN 104810144 A CN104810144 A CN 104810144A CN 201510258507 A CN201510258507 A CN 201510258507A CN 104810144 A CN104810144 A CN 104810144A
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- iron core
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- iron
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Abstract
The invention relates to an iron core laminating process. The process comprises the following steps: laminating a table top: groove steel and I-steel are selected according to the weight and the structural features of iron cores, and are arranged on a platform, and an upper clamp and a lower clamp are cleaned by cloth and put on the platform; clamp insulation pieces and clamping plates are put, and the insulation pieces are positioned on the same horizontal plane; a support upper-frame is arranged according to the size, the positions of the clamps are measured, and the clamp insulation pieces are horizontal with the support surface of a core column; after the iron cores are laminated, clamped and stacked, the clamp insulation pieces, the clamping plates, the upper clamp, the lower clamp and foot pad insulation pieces are put, and iron core ground lugs are put on the specified positions of a pattern. The iron core laminating process has the advantages that the technical scheme adopts a specific laminating way, the performance of the iron cores are maximized, the power transformation effect of a transformer is improved, and the energy loss is reduced.
Description
Technical field
The present invention relates to a kind of iron core overlapping technique, the especially a kind of 35KV of being applicable to level to place an order, the stacking technique of three-phase power transformer iron core.
Background technology
at present, in actual production not for 35KV level to place an order, the stacking technique of three-phase power transformer iron core, all adopt popular stacking technique, iron core performance is caused to reach largest optimization, therefore, just be badly in need of developing a kind of 35KV of being applicable to level to place an order, the stacking technique of three-phase power transformer iron core, through retrieval, do not find the same or analogous device with the present invention.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of 35KV of being applicable to level to place an order, the stacking technique of three-phase power transformer iron core.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of iron core overlapping technique, its innovative point is: comprise the steps:
1) closed assembly table top: first press iron core weight and design feature and select channel-section steel and I-steel, platform arranges channel-section steel and I-steel, upper and lower folder is cleaned again with cloth, and by its mounting table, place clamp insulation and clamping plate, make each insulation be in same level, finally arrange support upper frame according to size, measure folder position, made clamp insulation become level with stem stem stayed surface;
2) closed assembly iron core: the core structure of described transformer is three-phase three-column lamination, stem stem and side column want colligation, and iron chip type is 45 ° of complete oblique three grades of seams that splice, and two panels one is folded, and to be as the criterion closed assembly step by step with lower yoke, the wedge angle stretched out is high is 5 ㎜; Core lamination stack is three seam laminations;
First stack minimum level first and fold lamination, window width size high by angle square detection window, during iron core overlapping, permissible variation in dimension performs or pattern regulation by iron core member and process quality inner quality standard;
Often folded 10 ㎜ or level is thick is less than 16 ㎜ one-levels, striking homogeneous time lamination gently with tying cushion block, reducing seam, eliminate the uneven of joining seam and end face;
Check the perpendicularity of closed assembly iron core at any time with angle square at iron yoke end face, avoid a grade frame deflection;
Often folded one-level, with kind of calliper thickness, every adjacent two-stage must have an overgauge, maximum level palpus overgauge, and deviate meets the thick deviation regulation of level ± 0.5 ㎜;
Before being laminated to last two to three grades, clamp stem stem with iron core fixture, by caliper measurements closed assembly gross thickness, according to the closed assembly thickness of error transfer factor to last three grades;
Fold iron core comprehensively to repair, beat together, fill in iron core overlapping thickness record;
3) clamp: lamination terminates, put the insulation of clamp insulation, clamping plate, folder from top to bottom and feet well, place iron core grounding sheet, the position that iron core grounding sheet should specify by pattern, when before most final stage between 1 ~ 2 grade of sheet insertion depth be 30 ㎜, iron core diameter < 200 ㎜, when before most final stage between 1 ~ 2 grade of sheet insertion depth be 50 ㎜, iron core diameter >=200 ㎜, other end bolt and folder are fixed;
When standing up after iron core overlapping completion, stem stem must clamp, and adopts iron core fixture to clamp iron core column by the middle of stem stem to two ends, clamping torque is reached:
The moment of single-screw fixture: M=0.4B
maxn.m
The moment of double helix fixture: M=0.2B
maxn.m
Stem stem must not produce distortion, distortion, fold biased moving and chip projection, and stem stem gradient is less than 5 ‰;
Tighten and draw the other screw rod of screw rod, iron yoke, and make twisted each screw rod elasticity even, use measuring spanner for force moment measuring moment, make it reach requirement;
settle the insulation of feet, feet, clamping screw, the other screw rod of iron yoke and packing ring will be rectified, and fastening rear core shift must not more than 2 ㎜;
bent plate and insulation board are installed, and with ￠ 2 cotton cord, bent plate and insulation board are fixed;
7110 polyurethane paints are coated with to iron core lower yoke end face;
4) clear up: cleaning closed assembly platform peripheral obstacle, what iron core stood up direction hangs bin; And by compressed air or the clean iron core main body of hairbrush, hang up properly suspension hook, to stand up iron core with crane, iron core is hung closed assembly platform, be placed on reposefully and deposit on terrace, take suspension hook, whole lifting process is taken care; Again 7110 polyurethane paints are coated with to iron core column end face, natural drying 12h after japanning;
5) check: with 2500V megger check iron core to screw rod, iron core to folder, iron core to the insulation of bent plate, taking ground strip apart should not be path, checks that iron core is path over the ground with 500V megger, obstructed when taking ground strip apart.
The invention has the advantages that: technical solution of the present invention adopts closed assembly mode targetedly, the maximized performance by iron core reaches maximization, improves the power transformation effect of transformer, decreases the loss of energy.
Embodiment
A kind of iron core overlapping technique, comprises the steps:
1) closed assembly table top: first press iron core weight and design feature and select channel-section steel and I-steel, platform arranges channel-section steel and I-steel, upper and lower folder is cleaned again with cloth, and by its mounting table, place clamp insulation and clamping plate, make each insulation be in same level, finally arrange support upper frame according to size, measure folder position, made clamp insulation become level with stem stem stayed surface;
2) closed assembly iron core: the core structure of described transformer is three-phase three-column lamination, stem stem and side column want colligation, and iron chip type is 45 ° of complete oblique three grades of seams that splice, and two panels one is folded, and to be as the criterion closed assembly step by step with lower yoke, the wedge angle stretched out is high is 5 ㎜; Core lamination stack is three seam laminations;
First stack minimum level first and fold lamination, window width size high by angle square detection window, during iron core overlapping, permissible variation in dimension performs or pattern regulation by iron core member and process quality inner quality standard;
Often folded 10 ㎜ or level is thick is less than 16 ㎜ one-levels, striking homogeneous time lamination gently with tying cushion block, reducing seam, eliminate the uneven of joining seam and end face;
Check the perpendicularity of closed assembly iron core at any time with angle square at iron yoke end face, avoid a grade frame deflection;
Often folded one-level, with kind of calliper thickness, every adjacent two-stage must have an overgauge, maximum level palpus overgauge, and deviate meets the thick deviation regulation of level ± 0.5 ㎜;
Before being laminated to last two to three grades, clamp stem stem with iron core fixture, by caliper measurements closed assembly gross thickness, according to the closed assembly thickness of error transfer factor to last three grades;
Fold iron core comprehensively to repair, beat together, fill in iron core overlapping thickness record;
3) clamp: lamination terminates, put the insulation of clamp insulation, clamping plate, folder from top to bottom and feet well, place iron core grounding sheet, the position that iron core grounding sheet should specify by pattern, when before most final stage between 1 ~ 2 grade of sheet insertion depth be 30 ㎜, iron core diameter < 200 ㎜, when before most final stage between 1 ~ 2 grade of sheet insertion depth be 50 ㎜, iron core diameter >=200 ㎜, other end bolt and folder are fixed;
When standing up after iron core overlapping completion, stem stem must clamp, and adopts iron core fixture to clamp iron core column by the middle of stem stem to two ends, clamping torque is reached:
The moment of single-screw fixture: M=0.4B
maxn.m
The moment of double helix fixture: M=0.2B
maxn.m
Stem stem must not produce distortion, distortion, fold biased moving and chip projection, and stem stem gradient is less than 5 ‰;
Tighten and draw the other screw rod of screw rod, iron yoke, and make twisted each screw rod elasticity even, use measuring spanner for force moment measuring moment, make it reach requirement;
settle the insulation of feet, feet, clamping screw, the other screw rod of iron yoke and packing ring will be rectified, and fastening rear core shift must not more than 2 ㎜;
bent plate and insulation board are installed, and with ￠ 2 cotton cord, bent plate and insulation board are fixed;
7110 polyurethane paints are coated with to iron core lower yoke end face;
4) clear up: cleaning closed assembly platform peripheral obstacle, what iron core stood up direction hangs bin; And by compressed air or the clean iron core main body of hairbrush, hang up properly suspension hook, to stand up iron core with crane, iron core is hung closed assembly platform, be placed on reposefully and deposit on terrace, take suspension hook, whole lifting process is taken care; Again 7110 polyurethane paints are coated with to iron core column end face, natural drying 12h after japanning;
5) check: with 2500V megger check iron core to screw rod, iron core to folder, iron core to the insulation of bent plate, taking ground strip apart should not be path, checks that iron core is path over the ground with 500V megger, obstructed when taking ground strip apart.
Technical solution of the present invention adopts closed assembly mode targetedly, and the maximized performance by iron core reaches maximization, improves the power transformation effect of transformer, decreases the loss of energy.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection range is defined by appending claims and equivalent thereof.
Claims (1)
1. an iron core overlapping technique, is characterized in that: comprise the steps:
1) closed assembly table top: first press iron core weight and design feature and select channel-section steel and I-steel, platform arranges channel-section steel and I-steel, upper and lower folder is cleaned again with cloth, and by its mounting table, place clamp insulation and clamping plate, make each insulation be in same level, finally arrange support upper frame according to size, measure folder position, made clamp insulation become level with stem stem stayed surface;
2) closed assembly iron core: the core structure of described transformer is three-phase three-column lamination, stem stem and side column want colligation, and iron chip type is 45 ° of complete oblique three grades of seams that splice, and two panels one is folded, and to be as the criterion closed assembly step by step with lower yoke, the wedge angle stretched out is high is 5 ㎜; Core lamination stack is three seam laminations;
First stack minimum level first and fold lamination, window width size high by angle square detection window, during iron core overlapping, permissible variation in dimension performs or pattern regulation by iron core member and process quality inner quality standard;
Often folded 10 ㎜ or level is thick is less than 16 ㎜ one-levels, striking homogeneous time lamination gently with tying cushion block, reducing seam, eliminate the uneven of joining seam and end face;
Check the perpendicularity of closed assembly iron core at any time with angle square at iron yoke end face, avoid a grade frame deflection;
Often folded one-level, with kind of calliper thickness, every adjacent two-stage must have an overgauge, maximum level palpus overgauge, and deviate meets the thick deviation regulation of level ± 0.5 ㎜;
Before being laminated to last two to three grades, clamp stem stem with iron core fixture, by caliper measurements closed assembly gross thickness, according to the closed assembly thickness of error transfer factor to last three grades;
Fold iron core comprehensively to repair, beat together, fill in iron core overlapping thickness record;
3) clamp: lamination terminates, put the insulation of clamp insulation, clamping plate, folder from top to bottom and feet well, place iron core grounding sheet, the position that iron core grounding sheet should specify by pattern, when before most final stage between 1 ~ 2 grade of sheet insertion depth be 30 ㎜, iron core diameter < 200 ㎜, when before most final stage between 1 ~ 2 grade of sheet insertion depth be 50 ㎜, iron core diameter >=200 ㎜, other end bolt and folder are fixed;
When standing up after iron core overlapping completion, stem stem must clamp, and adopts iron core fixture to clamp iron core column by the middle of stem stem to two ends, clamping torque is reached:
The moment of single-screw fixture: M=0.4B
maxn.m
The moment of double helix fixture: M=0.2B
maxn.m
Stem stem must not produce distortion, distortion, fold biased moving and chip projection, and stem stem gradient is less than 5 ‰;
Tighten and draw the other screw rod of screw rod, iron yoke, and make twisted each screw rod elasticity even, use measuring spanner for force moment measuring moment, make it reach requirement;
settle the insulation of feet, feet, clamping screw, the other screw rod of iron yoke and packing ring will be rectified, and fastening rear core shift must not more than 2 ㎜;
bent plate and insulation board are installed, and with ￠ 2 cotton cord, bent plate and insulation board are fixed;
7110 polyurethane paints are coated with to iron core lower yoke end face;
4) clear up: cleaning closed assembly platform peripheral obstacle, what iron core stood up direction hangs bin; And by compressed air or the clean iron core main body of hairbrush, hang up properly suspension hook, to stand up iron core with crane, iron core is hung closed assembly platform, be placed on reposefully and deposit on terrace, take suspension hook, whole lifting process is taken care; Again 7110 polyurethane paints are coated with to iron core column end face, natural drying 12h after japanning;
5) check: with 2500V megger check iron core to screw rod, iron core to folder, iron core to the insulation of bent plate, taking ground strip apart should not be path, checks that iron core is path over the ground with 500V megger, obstructed when taking ground strip apart.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510258507.1A CN104810144B (en) | 2015-05-20 | 2015-05-20 | Iron core laminating process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510258507.1A CN104810144B (en) | 2015-05-20 | 2015-05-20 | Iron core laminating process |
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| CN104810144A true CN104810144A (en) | 2015-07-29 |
| CN104810144B CN104810144B (en) | 2017-01-25 |
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| CN201510258507.1A Active CN104810144B (en) | 2015-05-20 | 2015-05-20 | Iron core laminating process |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109087800A (en) * | 2017-06-14 | 2018-12-25 | 国家电网公司 | Transformer core manufacturing method and the transformer core producing device for realizing this method |
| CN109326431A (en) * | 2018-11-05 | 2019-02-12 | 中变集团上海变压器有限公司 | A kind of oil-immersed transformer and its assembly method |
| CN109474142A (en) * | 2018-12-29 | 2019-03-15 | 广州市创智机电设备有限公司 | The extremely more folded injection molding epoxy resin moulds of new energy electric machine iron core lamination rotation and method |
| CN109524230A (en) * | 2018-11-28 | 2019-03-26 | 沈阳工业大学 | A kind of control method and device of transformer core silicon-steel precision positioning |
| CN109887738A (en) * | 2019-03-29 | 2019-06-14 | 中变集团上海变压器有限公司 | A kind of dry-type transformer iron core full bias seam closed assembly method |
| CN109979744A (en) * | 2019-03-29 | 2019-07-05 | 中变集团上海变压器有限公司 | A kind of oil-immersed transformer iron core full bias seam closed assembly method |
| CN115331946A (en) * | 2022-09-19 | 2022-11-11 | 鲁变电工股份有限公司 | Transformer core piles up device |
Citations (4)
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| US4200854A (en) * | 1979-01-04 | 1980-04-29 | Westinghouse Electric Corp. | Core with step-lap joints |
| CN101409143A (en) * | 2008-08-05 | 2009-04-15 | 无锡市普天铁心有限公司 | Method for locating and overlapping center of transformer core |
| CN101901673A (en) * | 2010-05-21 | 2010-12-01 | 郑州金阳电气有限公司 | 5/7 sloping four-seam lamination mode of three-phase three-limb transformer core |
| CN103280308A (en) * | 2013-06-04 | 2013-09-04 | 株洲南车机电科技有限公司 | Laminating device and laminating method for iron cores of reactors |
-
2015
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4200854A (en) * | 1979-01-04 | 1980-04-29 | Westinghouse Electric Corp. | Core with step-lap joints |
| CN101409143A (en) * | 2008-08-05 | 2009-04-15 | 无锡市普天铁心有限公司 | Method for locating and overlapping center of transformer core |
| CN101901673A (en) * | 2010-05-21 | 2010-12-01 | 郑州金阳电气有限公司 | 5/7 sloping four-seam lamination mode of three-phase three-limb transformer core |
| CN103280308A (en) * | 2013-06-04 | 2013-09-04 | 株洲南车机电科技有限公司 | Laminating device and laminating method for iron cores of reactors |
Non-Patent Citations (1)
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| 杨大钰 等: "浅谈大型变压器铁芯叠装工艺", 《电力学报》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109087800A (en) * | 2017-06-14 | 2018-12-25 | 国家电网公司 | Transformer core manufacturing method and the transformer core producing device for realizing this method |
| CN109326431A (en) * | 2018-11-05 | 2019-02-12 | 中变集团上海变压器有限公司 | A kind of oil-immersed transformer and its assembly method |
| CN109524230A (en) * | 2018-11-28 | 2019-03-26 | 沈阳工业大学 | A kind of control method and device of transformer core silicon-steel precision positioning |
| CN109474142A (en) * | 2018-12-29 | 2019-03-15 | 广州市创智机电设备有限公司 | The extremely more folded injection molding epoxy resin moulds of new energy electric machine iron core lamination rotation and method |
| CN109887738A (en) * | 2019-03-29 | 2019-06-14 | 中变集团上海变压器有限公司 | A kind of dry-type transformer iron core full bias seam closed assembly method |
| CN109979744A (en) * | 2019-03-29 | 2019-07-05 | 中变集团上海变压器有限公司 | A kind of oil-immersed transformer iron core full bias seam closed assembly method |
| CN115331946A (en) * | 2022-09-19 | 2022-11-11 | 鲁变电工股份有限公司 | Transformer core piles up device |
| CN115331946B (en) * | 2022-09-19 | 2023-04-07 | 鲁变电工股份有限公司 | Transformer core stacking device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104810144B (en) | 2017-01-25 |
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Effective date of registration: 20170412 Address after: 226600 Haian province high tech Industrial Development Zone, Nantong province Hengli Road, No. 5, No. Patentee after: Jiangsu Dongye Electrical Equipment Co. Ltd. Address before: 226500 Haian Province, Nantong City, Haian high tech Industrial Development Zone, Hengli Road, No. 5, No. Patentee before: Jiangsu Huianlong Electric Co., Ltd. |
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Effective date of registration: 20170726 Address after: 226600 Haian province high tech Industrial Development Zone, Nantong province Hengli Road, No. 5, No. Patentee after: Jiangsu Dongye Electrical Equipment Co. Ltd. Address before: 226600 Haian province high tech Industrial Development Zone, Nantong province Hengli Road, No. 5, No. Patentee before: Jiangsu Huianlong Electric Co., Ltd. |
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