CN101847505B - Dry type transformer and manufacturing method thereof - Google Patents
Dry type transformer and manufacturing method thereof Download PDFInfo
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- CN101847505B CN101847505B CN2010101858134A CN201010185813A CN101847505B CN 101847505 B CN101847505 B CN 101847505B CN 2010101858134 A CN2010101858134 A CN 2010101858134A CN 201010185813 A CN201010185813 A CN 201010185813A CN 101847505 B CN101847505 B CN 101847505B
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Abstract
The invention belongs to the field of a transformer device, in particular to the improvement technology of the dry type transformer. The invention discloses a manufacturing method for the dry type transformer. processing a lead wire, an insulating tube and an insulating end ring by an NOMEX paper with insulated paint or glass cloth, and then winding them into a transformer; the manufacturing method is simple for processing, is convenient for the operation of work personnel and can effectively prevent dust from being cohered on the surface of the coil; respective to the productive technology of the existing vacuum pressure dipping paint, bigger device and area investment can be saved, thus reducing the pollution on the production environment and the influence of the insulating paint dropping on the production occasions in the carrying process; in addition, a pressure vessel is not needed in the production process; the safety loophole of the devices does not exist; and multiple-heating baking is saved in the production process, thus saving a mass of energy.
Description
Technical field
The invention belongs to the transformer equipment field, particularly a kind of improvement of dry-type transformer technology.
Background technology
At present, known impregnated dry-type transformer coil insulation treatment process is to adopt the solventfree resin lacquer to carry out vacuum pressure impregnation (being commonly called as VPI technology).Its technical process is: the coil that coiling is good compresses with compressing frock, places in the baking oven, is warming up to 120 ℃; Be incubated 4 hours, take out coil, naturally cool to 100 ℃; Wash coil with dry air, use silicone grease (silicone oil) to smear then and draw the end of a thread, continue to be cooled to 40-60 ℃ subsequent use; Open the storage paint can and stir, will store up paint can and progressively be evacuated to 0.08Mpa (normality atmospheric pressure), keep vacuum to stop after 0.5 hour stirring, remove vacuum; The coil of preheating, cleaning hangs in and carries out the dipping lacquer first time in the impregnating vessel of having opened, covers tight dipping lacquer cover, is evacuated to 400Pa, keeps 0.5 hour; Open defeated lacquer valve, the defeated lacquer time of control influenced dipping lacquer efficient at 0.5-1 hour in case cross slowly, and the too fast great amount of bubbles that can produce influences the dipping lacquer quality; The resin liquid level should be higher than coil 5-10cm, and defeated lacquer finished the continued fidelity empty 0.5 hour, and is simultaneously empty at fidelity, the nut on the hand-tight make-up impregnating vessel lid; Open the pneumatics pump, impregnating vessel is forced into 0.5Mpa, forbids to observe a jar interior situation in the pressure process, in order to avoid security incident occurs; Close the pressurize of pneumatics pump after 0.5 hour pressure release open back the lacquer valve to 0.2Mpa, return the lacquer time to be controlled at 0.5-1 hour, the impregnating vessel planted agent stays the part resin; 5-10cm at the bottom of liquid level exceeds jar prevents to store up and produces aeration dipping lacquer for the second time in the paint can, returns lacquer and finishes, and drips lacquer 0.5 hour; Pressure release finishes to keep 10 minutes fully, unclamps the dipping lacquer cover, and 15 ℃ on translation lid kept 5-10 minute; All open lid then, hang out coil and place on the drying room pallet, with the bubble that the lacquer on the NOMEX paper cleaning coil slips and possibly exist, the coil of having put in order places in the drying room; Open drying room and be heated to 130 ℃ of insulations 1 hour, be warming up to 150 ℃ again, be incubated and take out coil after 2-3 hour, naturally cool to 40-60 ℃; The residual lacquer of the coil of slinging cleaning coil bottom slips, and carries out the dipping lacquer second time, and process is with the dipping lacquer first time; The coil of having put in order places in the drying room, opens drying room and is heated to 130 ℃, is incubated 1 hour; Be warming up to 170 ℃, be incubated 4-6 hour, take out coil; Naturally cool to 40-60 ℃, mounting coil stretching on core limb is fastened, handle well alternate and insulation against ground; Weld transformer lead, at last transformer had been carried out the integral body baking 3-4 hour.About 40 hours consuming time of this technical process, inefficiency; Dip painting installation is invested about 400,000 yuan, and equipment is installed about 100,000 yuan of investment, and lacquer type organic coating is invested about 250,000 yuan, and occupied fund is more; The site area 120m2 that needs, it is big to take production site; Get into behind the coil paint-dipping in the process of drying room, lacquer type organic coating drippage ground influences the production site health; The volatile matter of lacquer type organic coating is mainly styrene, causes production environment and air pollution; Three bakings need to consume mass energy; The lacquer type organic coating solidfied material of baking back drippage drying room is more, wastes raw material on the one hand, discarded on the other hand after also contaminated environment; This technical process needs continuous operation, needs 6 staff to take turns flow operation at least, causes waste of human resource; Because vacuum pressure impregnation equipment belongs to pressure vessel, has potential safety hazard.
Summary of the invention
The invention provides a kind of manufacturing approach of dry-type transformer, this manufacturing approach need not special equipment, save space, personnel, frock and the energy, and it is free from environmental pollution not have the lacquer of dripping, and described dry-type transformer is simple in structure, is convenient to produce.
The present invention realizes through following technical scheme:
A kind of manufacturing approach of dry-type transformer, the step that comprises is following:
A, insulating varnish evenly is applied to the surface of NOMEX paper, glass cloth etc. through plant equipment; And insulating varnish is carried out skin drying through the heater on the plant equipment; Be wound into coiled strip again; Coiled strip is put into drying room and is heated to 100 ℃ of insulations a period of times (temperature retention time length can not above 2 hours) and carries out the semi-solid preparation processing, is cooled to the normal temperature state then
B, twine lead, twine 3 to 4 layers with the NOMEX paper of making in the steps A with insulating varnish,
C, twine insulating cylinder, insulating end ring with the NOMEX paper of making in the steps A, glass cloth etc. with insulating varnish,
D, on the coiling mould, place earlier the low-voltage insulation tube, again the lead of making is wound on the insulating cylinder, with insulating end ring its two ends are clamped, and carry out colligation, the good low-voltage coil of coiling,
E, then place stay in the appearance of low-voltage coil, coiling High-Voltage Insulation tube on stay is placed stay in High-Voltage Insulation tube appearance, then with the lead coiling high-tension coil of making, and the same D of method,
F, welding transformer lead-in wire,
G, to the whole baking of transformer 3 to 4 hours, be cured, and carry out drying, baking temperature is 160 ℃.
A kind of dry-type transformer; It comprises iron core, low-voltage insulation tube, High-Voltage Insulation tube, insulating end ring and by the low-voltage coil and the high-tension coil of lead coiling, is equipped with insulating end ring at the two ends of low-voltage coil and high-tension coil that low-voltage coil is placed on the iron core; Between iron core and low-voltage coil, be provided with the low-voltage insulation tube; Be provided with layer insulation or stay at the low-voltage coil interlayer, be provided with cross-over block between cake, high-tension coil is placed on the low-voltage coil; Be provided with layer insulation or cross-over block at the high-tension coil interlayer; Be provided with cross-over block between cake, between low-voltage coil and high-tension coil, be provided with the High-Voltage Insulation tube, the surface of described lead is wound with the NOMEX paper with insulating varnish.
Two ends at coil also are provided with hold-down mechanism.
Be wound with NOMEX paper or glass cloth on the described insulating cylinder with insulating varnish.
Be wound with NOMEX paper or glass cloth on the described insulating end ring with insulating varnish.
The coil of a kind of dry-type transformer of the present invention adopts NOMEX paper or glass cloth with insulating varnish that lead is twined, and processing is got up simple, is convenient to staff's operation; And can prevent effectively that dust is bonded in the surface of coil, and adopt manufacturing approach of the present invention, save of the requirement of traditional vacuum pressure impregnation the harshness in equipment, place; Drop in the equipment and the place of having reduced early stage, and in process of production, insulating varnish is in solid state; Reduced the pernicious gas that insulating varnish evaporates, reduced pollution, and reduced of the influence of in handling process insulating varnish drippage the production site hygienic conditions to production environment; And need not to use pressure vessel in the production process; The potential safety hazard that does not have equipment has been saved heated baking repeatedly in process of production, has practiced thrift a large amount of energy.
Embodiment
The manufacturing approach of a kind of dry-type transformer of the present invention; NOMEX paper or the glass cloth that adopt in the manufacturing approach with insulating varnish, the production process of described NOMEX paper and glass cloth is following: through mechanical device insulating varnish is coated on the surface of NOMEX paper, glass cloth uniformly, and through the heater on the mechanical device insulating varnish is carried out skin drying; Described mechanical device is a coating machine; Described insulating varnish is mixed by lacquer type organic coating and curing agent, then NOMEX paper or glass cloth is wound into coiled strip, coiled strip is put into drying room be heated to 100 ℃ and be incubated the regular hour; The time of insulation was no longer than 2 hours; The insulating varnish of NOMEX paper or glass cloth surface is cured, and insulating varnish is convenient to follow-up operations after solidifying, and can prevent effectively that dust is bonded on the insulating varnish.
Use the lead of the NOMEX paper winding around that processes then; General winding reaches an insulation effect that satisfies instructions for use for 3 to 4 layers, and adopts the NOMEX paper or the glass cloth that process that insulating end ring, low-voltage insulation tube and High-Voltage Insulation tube are twined processing.With the lead coiling on insulating cylinder that processes, coiling is fixed two ends with insulating end ring after accomplishing then, meanwhile accomplishes the colligation of lifting one's head with coil, and insulating tape or the adhesive tape with insulating varnish also adopted in colligation.
On the coiling mould, place pre-processed low-voltage insulation tube earlier, again with lead coiling low-voltage coil on the low-voltage insulation tube of making; And clamp with insulating end ring at the two ends of low-voltage coil, and carry out colligation (when coiling be layer coil the time, between coil layer, need prevent stay or layer insulation; Appearance is with NOMEX paper with insulating varnish or glass cloth wrapping; Be placed with cushion block between cake), then place stay, at stay arranged outside High-Voltage Insulation tube in the appearance of low-voltage coil; Stay is placed in the outside at the High-Voltage Insulation tube, then with the lead coiling high-tension coil of making (method of coiling is with the winding method of low-voltage coil).
After coil winding is accomplished; With mounting coil stretching on iron core; And the hold-down mechanism that utilizes transformer makes the coil axial compression, makes coil be in an impaction state that coincide with actual working state, and promptly transformer has mechanical strength preferably in actual use; After compressing completion, the lead-in wire of welding transformer.
At last transformer is cured processing, whole transformer is placed baking oven, 120 ℃ of heating earlier; The insulating varnish thawing of original curing is in a liquid state; Have certain fluidity, can use the insulating varnish on the NOMEX paper that is wrapped on each parts well to merge, be warmed up to 160 ℃ then; Be incubated 3 to 4 hours, promptly accomplish curing and transformer volume drying the coil of transformer.
The dry-type transformer that adopts above-mentioned manufacturing approach to produce, it comprises iron core, low-voltage insulation tube, High-Voltage Insulation tube, insulating end ring and by the low-voltage coil and the high-tension coil of lead coiling, is equipped with insulating end ring at the two ends of low-voltage coil and high-tension coil; Low-voltage coil is placed on the iron core, between iron core and low-voltage coil, is provided with the low-voltage insulation tube, is provided with layer insulation or stay at the low-voltage coil interlayer; Be provided with cross-over block between cake, high-tension coil is placed on the low-voltage coil, is provided with layer insulation or cross-over block at the high-tension coil interlayer; Be provided with cross-over block between cake, between low-voltage coil and high-tension coil, be provided with the High-Voltage Insulation tube, the surface of described lead is wound with the NOMEX paper with insulating varnish; Two ends at coil also are provided with hold-down mechanism, are used to compress coil, make coil obtain a mechanical strength preferably; Also being banded with one at an end of coil lifts one's head; Lift one's head and be connected with the wire bonds of whole transformer, need not specialized apparatus in this dry-type transformer production process, processing is got up simple.
The coil of a kind of dry-type transformer of the present invention adopts NOMEX paper or glass cloth with insulating varnish that lead is twined, and processing is got up simple, is convenient to staff's operation; And can prevent effectively that dust is bonded in the surface of coil, and the production technology of relative and existing vacuum pressure impregnation, saved bigger equipment and place and dropped into; Practiced thrift production cost, in process of production, insulating varnish is in solid state; Reduced the pernicious gas that insulating varnish evaporates, reduced pollution, and reduced of the influence of in handling process insulating varnish drippage the production site hygienic conditions to production environment; And production process in need not to use pressure vessel; The potential safety hazard that does not have equipment has been saved heated baking repeatedly in process of production, has practiced thrift a large amount of energy.
Claims (1)
1. the manufacturing approach of a dry-type transformer, the step that comprises is following:
A, insulating varnish evenly is applied to the surface of NOMEX paper or glass cloth through coating machine; And insulating varnish is carried out skin drying through the heater on the coating machine, and being wound into coiled strip again, coiled strip is put into drying room and is heated to 100 ℃ of insulations; The length of temperature retention time can not be above 2 hours; Carry out semi-solid preparation and handle, be cooled to the normal temperature state then
B, twine lead, twine 3 to 4 layers with the NOMEX paper of making in the steps A with insulating varnish,
C, twine insulating cylinder and insulating end ring with the NOMEX paper of making in the steps A or glass cloth with insulating varnish,
D, on the coiling mould, place earlier the low-voltage insulation tube, again the lead of making among the step B is wound on the insulating cylinder, clamp with the two ends of insulating end ring, and carry out colligation coil, the good low-voltage coil of coiling,
E, then place stay, on stay, place the High-Voltage Insulation tube, place stay in High-Voltage Insulation tube appearance in the appearance of low-voltage coil, then with the lead coiling high-tension coil of making among the step B, the same D of method,
F, welding transformer lead-in wire,
G, to the whole baking of transformer 3 to 4 hours, carry out coil and solidify and volume drying, baking temperature is 160 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101858134A CN101847505B (en) | 2010-05-28 | 2010-05-28 | Dry type transformer and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101858134A CN101847505B (en) | 2010-05-28 | 2010-05-28 | Dry type transformer and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101847505A CN101847505A (en) | 2010-09-29 |
| CN101847505B true CN101847505B (en) | 2012-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101858134A Expired - Fee Related CN101847505B (en) | 2010-05-28 | 2010-05-28 | Dry type transformer and manufacturing method thereof |
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102286156A (en) * | 2011-01-19 | 2011-12-21 | 江苏宝亨新电气有限公司 | Large-capacity dry-type transformer curing process |
| CN102315011A (en) * | 2011-05-10 | 2012-01-11 | 江苏宏源电气有限责任公司 | Drying and curing technology for coil and body of transformer |
| CN102522194B (en) * | 2011-12-12 | 2013-09-11 | 陕西宝成航空仪表有限责任公司 | Ladder winding method for transformer type sensor coil |
| CN102592806A (en) * | 2011-12-22 | 2012-07-18 | 江苏宏安变压器有限公司 | Amorphous alloy dry-type transformer coil insulating structure and method of removing local discharge signal noise |
| CN103500647B (en) * | 2013-10-28 | 2015-10-21 | 武汉大学 | A kind of manufacture method of coil |
| CN104715920B (en) * | 2013-12-12 | 2017-05-03 | 苏州长风航空电子有限公司 | Coil varnished wire baking method |
| CN104183364B (en) | 2014-06-23 | 2016-10-05 | 上海联影医疗科技有限公司 | High tension generator transformation fuel tank |
| CN104103388A (en) * | 2014-07-25 | 2014-10-15 | 广东海鸿变压器有限公司 | Paint dipping technology of insulation paper |
| CN104576032A (en) * | 2014-12-02 | 2015-04-29 | 海鸿电气有限公司 | Manufacturing method for varnish impregnation-free and pouring-free transformer |
| CN106098351A (en) * | 2016-06-06 | 2016-11-09 | 柳州市海格电气有限公司 | The SH15 type amorphous alloy oil immersion type distribution transformer manufacture method of 10kV |
| CN109727754A (en) * | 2017-10-30 | 2019-05-07 | 特变电工沈阳变压器集团有限公司 | A kind of loop construction and its winding method |
| CN107972289B (en) * | 2017-12-05 | 2020-06-02 | 苏州太湖电工新材料股份有限公司 | Preparation method of epoxy glass cloth reinforced insulation end ring |
| CN110673004A (en) * | 2019-11-25 | 2020-01-10 | 湖南工程学院 | Insulation optimization detection method for offshore wind driven generator |
| CN112420373B (en) * | 2020-10-19 | 2022-05-17 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Manufacturing method of YBCO high-temperature superconducting magnet |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2300175Y (en) * | 1997-04-07 | 1998-12-09 | 云南变压器厂 | dry-type power transformer |
| CN1263348A (en) * | 1999-02-09 | 2000-08-16 | 刘振邦 | Composite insulating material and its production method |
| CN200965806Y (en) * | 2006-10-20 | 2007-10-24 | 卢之云 | Insulated flat copper cord |
| CN201117408Y (en) * | 2007-07-27 | 2008-09-17 | 中电电气集团有限公司 | High low-voltage winding rectangular coil |
| US7939764B2 (en) * | 2007-09-25 | 2011-05-10 | Samuel Gottfried | Fire, heat and high voltage cable protection wrap |
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- 2010-05-28 CN CN2010101858134A patent/CN101847505B/en not_active Expired - Fee Related
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| CN101847505A (en) | 2010-09-29 |
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Owner name: CHANGZHOU LIANLI AUTOMATION TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: CHANGZHOU LIANLI TRANSFORMER CO., LTD. Effective date: 20131231 |
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Effective date of registration: 20131231 Address after: 213125 No. 6, Qingyang Road, Xinbei District, Jiangsu, Changzhou Patentee after: Changzhou Lianli Automation Technology Co., Ltd. Address before: 213125 No. 6, Qingyang Road, Xinbei District, Jiangsu, Changzhou Patentee before: Changzhou Lianli Transformer Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120627 Termination date: 20160528 |