CN101409149B - Paint-dipping drying technique for dry-type three-phase combined transformer - Google Patents
Paint-dipping drying technique for dry-type three-phase combined transformer Download PDFInfo
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- CN101409149B CN101409149B CN2008100484714A CN200810048471A CN101409149B CN 101409149 B CN101409149 B CN 101409149B CN 2008100484714 A CN2008100484714 A CN 2008100484714A CN 200810048471 A CN200810048471 A CN 200810048471A CN 101409149 B CN101409149 B CN 101409149B
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Abstract
The name of the invention is paint dipping and drying technology of a three-phase combined transformer. The invention relates to the dry-typed three-phase combined transformer, in particular to the paint dipping and drying technology of the three-phase combined transformer. The technology can solve the problems of small overload capacity, easy explosion, heavy weight and inconvenient installation of the known epoxy resin cast dry-typed combined transformer. The technology is the paint dipping and drying technology of a voltage transformer coil and is completed by three times; in the first time, the coil is well winded for paint dipping; in the second time, a secondary coil is well placed for paint dipping after wrapping a foot loop; in the third time, the paint dipping is carried out after well winding an outer insulation; the three times of the paint dipping and drying technology process and the paint dipping and drying technology process of a current transformer coil are as follows:(1) pre-drying of a white body; (2) vacuum dewetting; (3) paint dipping; (4) returning of paint; (5) returning of residual paint; (6) cleaning; (7) returning of a cleaning agent; (8) drying. The paint dipping and drying technology has higher dynamic and thermal stability, fire retardance, environmental protection, safety, low loss, good thermal radiation, great overload capacity, light weight, convenient transportation and installation and free maintenance.
Description
Technical field
The present invention relates to a kind of dry-type three-phase combined transformer, relate to a kind of paint-dipping drying technique of dry-type three-phase combined transformer specifically.
Background technology
Domestic widely used combination transformer has JLS series oil immersed type combination transformer or JLSZ series poured with epoxy resin dry type combination transformer at present, and oil immersed type combination transformer insulating oil leakage is serious, needs often to safeguard not have anti-stealing electricity function again; JLSZ series dry type combination transformer is to adopt poured with epoxy resin, stoving process, so overload capacity is little, explosive, heavy, inconvenience is installed.
Summary of the invention
The objective of the invention is at above-mentioned deficiency, and a kind of instrument transformer that makes that provides has higher moving, thermally-stabilised ability, and fire-retardant, environmental protection, safety, low-loss, good heat dissipation, overload capacity are big, in light weight, easy transportation and installation, non-maintaining paint-dipping drying technique for dry-type three-phase combined transformer.
Technical scheme of the present invention is: first and second coil paint-dipping stoving process flow process of voltage transformer is finished by three times, for the first time be that primary winding winds the back paint-dipping drying, for the second time be that the ring back secondary coil of binding foot is put paint-dipping drying well, be that external insulation winds the back paint-dipping drying for the third time, three paint-dipping drying technique flow processs, and first and second coil paint-dipping stoving process flow process of current transformer all is: 1. openpore preliminary drying; 2. vacuum drying; 3. dipping lacquer; 4. return lacquer; 5. return surplus lacquer; 6. clean; 7. return cleaning agent; 8. dry dry.
The design temperature of said openpore preliminary drying voltage transformer coil is 120 ℃ in the technical solution of the present invention, and the design temperature of current mutual inductor coil is 80 ℃.
Said vacuum drying voltage transformer coil is that the relative vacuum degree is risen to-0.09MPa in the technical solution of the present invention, when reducing to-rising to-0.09MPa behind the 0.06MPa again, keeps 90 minutes; Current mutual inductor coil is that the relative vacuum degree is risen to-0.04MPa, keeps 90 minutes.
Said dipping lacquer voltage transformer coil is to reduce to-begin behind the 0.06MPa defeated lacquer when the relative vacuum degree in the technical solution of the present invention, and the defeated lacquer time was controlled at 30-60 minute, and defeated lacquer finishes back relative vacuum degree and rises to-0.09MPa, keeps 90 minutes; To be the relative vacuum degree begin defeated lacquer to current mutual inductor coil to-0.04MPa, and the defeated lacquer time is 30-60 minute, and defeated lacquer finishes back relative vacuum degree and rises to-0.04MPa, keeps 90 minutes.
In the technical solution of the present invention said time lacquer voltage transformer coil be vacuum degree is reached-0.09MPa after drop lacquer 15-30 minute; The current mutual inductor coil drop lacquer that is the relative vacuum degree to the-0.04MPa 15-30 minute.
In the technical solution of the present invention said time surplus lacquer voltage transformer coil be the relative vacuum degree is risen to-0.09MPa after, return surplus lacquer; Current mutual inductor coil be the relative vacuum degree rise to-return surplus lacquer behind the 0.04MPa.
Said cleaning is to clean 5-10 minute behind the to be cleaned dose of extremely following boundary line in the technical solution of the present invention.
In the technical solution of the present invention said time cleaning agent voltage transformer coil be the relative vacuum degree is risen to-return cleaning agent behind the 0.09MPa; Current mutual inductor coil be the relative vacuum degree is risen to-return cleaning agent behind the 0.04MPa.
In the technical solution of the present invention said oven dry dry be with temperature rise to 100 ℃ ± 5 ℃ the insulation 1 hour, rise to again 130 ℃ ± 5 ℃ the insulation 3 hours.
The present invention is mainly used in the electric energy metrical that 50HZ exchanges three-phase electrical power system; Be fit to places such as fire prevention, explosion-proof, no oiling service requirement; This product is selected H level high temperature resistant magnet wire for use, F level high-temperature insulation paper, the H level is fire-retardant, environmental protection insulating varnish, voltage transformer is selected the high conducting magnet core of C shape high-quality for use, current transformer selects that high-quality is Fe-based amorphous, the iron-base nanometer crystal alloy iron core for use, adopt voltage, the current transformer of the H level dry type of " vacuum, pressure impregnation, oven dry " explained hereafter, has higher moving, thermally-stabilised ability, fire-retardant, environmental protection, safety, low-loss, good heat dissipation, big, in light weight, the easy transportation and installation, non-maintaining of overload capacity.
Embodiment
With the 10kV three-phase combination transformer is example, it is made up of 10kV high tension voltage summation current transformer two large divisions, the paint-dipping drying technique flow process of 10kV voltage transformer first and second coil is finished by three times, for the first time be that primary winding winds the back paint-dipping drying, for the second time be that the ring back secondary coil of binding foot is put paint-dipping drying well, be that external insulation winds the back paint-dipping drying for the third time, the flow process of three paint-dipping drying techniques is identical with the paint-dipping drying technique flow process that current transformer first and second coil carries out together, all is: 1. openpore preliminary drying; 2. vacuum drying; 3. dipping lacquer; 4. return lacquer; 5. return surplus lacquer; 6. clean; 7. return cleaning agent; 8. dry dry.
The concrete implementation condition of 10kV voltage transformer first and second coil paint-dipping stoving process is as follows:
1, openpore preliminary drying
Temperature is set at 120 ℃, temperature can not be above 70 ℃ when dipping lacquer, the coil of wire is put into impregnating vessel, cover tight dipping lacquer cover → be provided with preliminary drying temperature (120 ℃) → open No. 2 valves (air outlet valve) → open No. 1 valve (the intake valve) → machine that blows in → open heater → time-delay starting heater → to design temperature (120 ℃) pass heater → treat that cylinder temperature drops to 65 ℃ → Blowing stopper → No. 1 valve in pass (air outlet valve) → No. 2 valves in pass (intake valve) automatically after 3 minutes;
2, vacuum drying
Drive No. 4 valves (vacuum main valve) → open No. 5 valves (soaking baking finish cylinder vacuum) → startup vacuum pump → reduce to-0.06MPa → startup vacuum pump → to vacuum degree-0.09MPa → treat relative vacuum degree to empty 90 minutes of relative vacuum degree-0.09MPa → fidelity;
3, dipping lacquer
Treat that the relative vacuum degree reduces to-0.06MPa → open No. 6 valves (advancing to coat with lacquer valve) → open No. 7 valves (lacquer-storing jar emptying), begin into lacquer, the defeated lacquer time of control is at defeated lacquer No. 6 valves in ends → passs (advancing to coat with lacquer valve) → No. 7 valves in passs (lacquer-storing jar emptying) of 30-60 minute (observing no bubble in the cylinder) → (look lacquer painting surpass work package 3-5 centimetre be advisable) → open No. 4 valves (vacuum main valve) → startup vacuum pump → to relative vacuum degree-0.09MPa → No. 4 valves in pass (vacuum main valve) vacuum pump → continuation fidelity sky 90 minutes → be less than as if the fidelity sky time, treat vacuum degree reduce to-0.06MPa → open again No. 4 valves (vacuum main valve) startup vacuum pump is to vacuum degree-0.09MPa pass No. 4 valves (vacuum main valve) → stop vacuum pump → open No. 8 valves (soaking the emptying of baking finish cylinder);
4, return lacquer
Closing No. 5 valves (soaks baking finish cylinder vacuum → open No. 4 valves (vacuum main valve) and drives No. 9 valves (lacquer-storing jar vacuum) → startup vacuum pump → to vacuum degree-0.09MPa, close No. 4 valves (vacuum main valve) → stop vacuum pump → open No. 11 valves (returning the lacquer valve) → treat vacuum meter pointer and be zero → closed No. 11 valves (returning the lacquer valve) → drop lacquer 15-30 minute;
5, return surplus lacquer
Drive No. 4 valves (vacuum main valve) → startup vacuum pump → be zero → close No. 10 valves (returning surplus lacquer valves) to relative vacuum degree-0.09MPa → No. 4 valves in pass (vacuum main valve) → stop vacuum pump → open No. 10 valves (returning surplus lacquer valve) → treat vacuum meter pointer;
6, clean
Drive No. 12 valves (cleaning valve), No. 16 valves (advancing back cleaning valve), No. 14 valves (cleaning cylinder emptying) → to be cleaned dose and dropped to boundary line → No. 12 valves in pass (cleaning valve), No. 14 valves (cleaning cylinder emptying) → cleaning 5-10 minute;
7, return cleaning agent
Close No. 9 valves (lacquer-storing jar vacuum) → open No. 4 valves (vacuum main valve), No. 19 valves (cleaning cylinder vacuum) → startup vacuum pump →, close No. 4 valves (vacuum main valve) → stop vacuum pump → open No. 17 valves (returning cleaning agent) → treat vacuum meter pointer and be zero, cleaning agent gets back to boundary line → No. 8 valves in pass (soaking the emptying of baking finish cylinder), No. 16 valves (advancing back cleaning valve), No. 17 valves (time cleaning agent), No. 19 valves (cleaning cylinder vacuum) to relative vacuum degree-0.09MPa;
8, oven dry is dry
Drive No. 2 valves (air outlet valve) → open No. 1 valve (the intake valve) → machine that blows in → open heater → time-delay starting heater → to 100 ℃ ± 5 ℃ insulations of design temperature 1 hour → show 120 ℃ → Blowing stopper automatically after 3 minutes to 130 ℃ ± 5 ℃ insulations of design temperature 3 hours → close heater → inlet temperature.
The paint-dipping drying technique flow process of 10KV current transformer first and second coil is as follows:
1, openpore preliminary drying
Temperature is set at 80 ℃, temperature can not be above 60 ℃ when dipping lacquer, the coil of wire is put into impregnating vessel, cover tight dipping lacquer cover → be provided with preliminary drying temperature (80 ℃) → open No. 2 valves (air outlet valve) → open No. 1 valve (the intake valve) → machine that blows in → open heater → time-delay starting heater → to design temperature (80 ℃) pass heater → treat that cylinder temperature drops to 60 ℃ → Blowing stopper → No. 1 valve in pass (air outlet valve) → No. 2 valves in pass (intake valve) automatically after 3 minutes;
2, vacuum drying
Drive No. 4 valves (vacuum main valve) → open No. 5 valves (soaking baking finish cylinder vacuum) → startup vacuum pump → to empty 90 minutes of vacuum degree-0.04MPa → fidelity.
3, dipping lacquer
Treat that vacuum degree is to-0.04MPa → open No. 6 valves (advancing to coat with lacquer valve) → open No. 7 valves (lacquer-storing jar emptying), begin into lacquer, the defeated lacquer time of control 30-60 minute (observing no bubble in the cylinder) → (look lacquer painting surpass work package 3-5 centimetre be advisable) is defeated coated with lacquer No. 6 valves in end → pass (advancing to coat with lacquer valve) → No. 7 valves in pass (lacquer-storing jar emptying) → continuation fidelity sky 90 minutes → drive No. 8 valves (soaking the emptying of baking finish cylinder);
4, return lacquer
Closing No. 5 valves (soaks baking finish cylinder vacuum → open No. 4 valves (vacuum main valve) and drives No. 9 valves (lacquer-storing jar vacuum) → startup vacuum pump → to vacuum degree-0.04MPa, close No. 4 valves (vacuum main valve) → stop vacuum pump → open No. 11 valves (returning the lacquer valve) → treat vacuum meter pointer and be zero → closed No. 11 valves (returning the lacquer valve) → drop lacquer 15-30 minute;
5, return surplus lacquer
Drive No. 4 valves (vacuum main valve) → startup vacuum pump → be zero → close No. 10 valves (returning surplus lacquer valves) to vacuum degree-0.04MPa → No. 4 valves in pass (vacuum main valve) → stop vacuum pump → open No. 10 valves (returning surplus lacquer valve) → treat vacuum meter pointer;
6, clean
Drive No. 12 valves (cleaning valve), No. 16 valves (advancing back cleaning valve), No. 14 valves (cleaning cylinder emptying) → to be cleaned dose to boundary line → No. 12 valves in pass (cleaning valve) down, No. 14 valves (cleaning cylinder emptying) → cleaning 5-10 minute;
7, return cleaning agent
Close No. 9 valves (lacquer-storing jar vacuum) → open No. 4 valves (vacuum main valve), No. 19 valves (cleaning cylinder vacuum) → startup vacuum pump →, close No. 4 valves (vacuum main valve) → stop vacuum pump → open No. 17 valves (returning cleaning agent) → treat vacuum meter pointer and be zero, cleaning agent gets back to boundary line → No. 8 valves in pass (soaking the emptying of baking finish cylinder), No. 16 valves (advancing back cleaning valve), No. 17 valves (time cleaning agent), No. 19 valves (cleaning cylinder vacuum) to vacuum degree-0.04MPa;
8, oven dry is dry
Drive No. 2 valves (air outlet valve) → open No. 1 valve (the intake valve) → machine that blows in → open heater → time-delay starting heater → to 100 ℃ ± 5 ℃ insulations of design temperature 1 hour → show 110 ℃ → Blowing stopper automatically after 3 minutes to 3 hours pass heater → inlet temperatures of 130 ℃ ± 5 ℃ insulations of design temperature.
Claims (9)
1. paint-dipping drying technique for dry-type three-phase combined transformer, it is characterized in that: first and second coil paint-dipping stoving process flow process of voltage transformer is finished by three times, for the first time be that primary winding winds the back paint-dipping drying, for the second time be that the primary winding ring back secondary coil of binding foot is put paint-dipping drying well, be that external insulation winds the back paint-dipping drying for the third time, three paint-dipping drying technique flow processs, and first and second coil of current transformer carries out the paint-dipping drying technique flow process together and all is: 1. openpore preliminary drying; 2. vacuum drying; 3. dipping lacquer; 4. return lacquer; 5. return surplus lacquer; 6. clean; 7. return cleaning agent; 8. dry dry.
2. paint-dipping drying technique for dry-type three-phase combined transformer according to claim 1 is characterized in that the design temperature of said openpore preliminary drying voltage transformer coil is 120 ℃, and the design temperature of current mutual inductor coil is 80 ℃.
3. paint-dipping drying technique for dry-type three-phase combined transformer according to claim 1 is characterized in that said vacuum drying voltage transformer coil is that the relative vacuum degree is risen to-0.09MPa, when reducing to-rising to-0.09MPa behind the 0.06MPa again, keeps 90 minutes; Current mutual inductor coil is that the relative vacuum degree is risen to-0.04MPa, keeps 90 minutes.
4. paint-dipping drying technique for dry-type three-phase combined transformer according to claim 1, it is characterized in that said dipping lacquer voltage transformer coil is to reduce to-begin behind the 0.06MPa defeated lacquer when the relative vacuum degree, the defeated lacquer time was controlled at 30-60 minute, defeated lacquer finishes back relative vacuum degree and rises to-0.09MPa, keeps 90 minutes; To be the relative vacuum degree begin defeated lacquer to current mutual inductor coil to-0.04MPa, and the defeated lacquer time is 30-60 minute, and defeated lacquer finishes back relative vacuum degree and rises to-0.04MPa, keeps 90 minutes.
5. paint-dipping drying technique for dry-type three-phase combined transformer according to claim 1, it is characterized in that said time lacquer voltage transformer coil be the relative vacuum degree is reached-0.09MPa after drop lacquer 15-30 minute; The current mutual inductor coil drop lacquer that is the relative vacuum degree to the-0.04MPa 15-30 minute.
6. paint-dipping drying technique for dry-type three-phase combined transformer according to claim 1 is characterized in that said time surplus lacquer voltage transformer coil is that the relative vacuum degree is risen to-0.09MPa, returns surplus lacquer; Current mutual inductor coil be the relative vacuum degree rise to-return surplus lacquer behind the 0.04MPa.
7. paint-dipping drying technique for dry-type three-phase combined transformer according to claim 1 is characterized in that said cleaning is to be cleaned dose and cleaned 5-10 minute behind the boundary line extremely down.
8. paint-dipping drying technique for dry-type three-phase combined transformer according to claim 1, it is characterized in that said time cleaning agent voltage transformer coil be the relative vacuum degree is risen to-return cleaning agent behind the 0.09MPa; Current mutual inductor coil be vacuum degree is risen to-return cleaning agent behind the 0.04MPa.
9. paint-dipping drying technique for dry-type three-phase combined transformer according to claim 1, it is characterized in that said oven dry dry be with temperature rise to 100 ℃ ± 5 ℃ the insulation 1 hour, rise to again 130 ℃ ± 5 ℃ the insulation 3 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100484714A CN101409149B (en) | 2008-07-19 | 2008-07-19 | Paint-dipping drying technique for dry-type three-phase combined transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100484714A CN101409149B (en) | 2008-07-19 | 2008-07-19 | Paint-dipping drying technique for dry-type three-phase combined transformer |
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| Publication Number | Publication Date |
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| CN101409149A CN101409149A (en) | 2009-04-15 |
| CN101409149B true CN101409149B (en) | 2011-07-20 |
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| CN2008100484714A Expired - Fee Related CN101409149B (en) | 2008-07-19 | 2008-07-19 | Paint-dipping drying technique for dry-type three-phase combined transformer |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105914972A (en) * | 2016-07-12 | 2016-08-31 | 合肥新沪屏蔽泵有限公司 | Paint dipping process for stator for shield pump |
| CN108831740A (en) * | 2018-08-03 | 2018-11-16 | 合肥鑫伟电力设备有限公司 | A kind of dry-type transformer dipping paint method |
| CN111463978B (en) * | 2020-04-08 | 2021-07-30 | 六安强力电机有限公司 | Motor coil paint dipping method for motor production |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87102374A (en) * | 1987-03-25 | 1988-10-12 | 江苏省国营建华机床厂 | Effective, harmless, combined drying process |
| CN1426076A (en) * | 2001-12-13 | 2003-06-25 | 上海电器科学研究所 | Vacuum pressure impregnaing insulation process |
| CN1787134A (en) * | 2005-12-13 | 2006-06-14 | 中电电气集团有限公司 | Tech. for impregnating varnish of half packed 10KV grade high voltage coil |
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2008
- 2008-07-19 CN CN2008100484714A patent/CN101409149B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87102374A (en) * | 1987-03-25 | 1988-10-12 | 江苏省国营建华机床厂 | Effective, harmless, combined drying process |
| CN1426076A (en) * | 2001-12-13 | 2003-06-25 | 上海电器科学研究所 | Vacuum pressure impregnaing insulation process |
| CN1787134A (en) * | 2005-12-13 | 2006-06-14 | 中电电气集团有限公司 | Tech. for impregnating varnish of half packed 10KV grade high voltage coil |
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| CN101409149A (en) | 2009-04-15 |
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