CN2567749Y - Testing device for impregnating varnish vacuum performance - Google Patents
Testing device for impregnating varnish vacuum performance Download PDFInfo
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- CN2567749Y CN2567749Y CN 02266073 CN02266073U CN2567749Y CN 2567749 Y CN2567749 Y CN 2567749Y CN 02266073 CN02266073 CN 02266073 CN 02266073 U CN02266073 U CN 02266073U CN 2567749 Y CN2567749 Y CN 2567749Y
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Abstract
The utility model relates to a testing device for impregnating varnish vacuum performance, which is mainly composed of a vacuum machine set 2, a vacuum pressure storing tank 5, vacuum varnish containing tanks 24, 26, a vacuum condensation tank 36, a refrigeration machine set 34, a testing article sampling cup 31, etc. The utility model can carry out a vacuum ' foaming' test, a vacuum sticking temperature test, a vacuum volatilization test, a vacuum impact test, etc. The utility model simulates the running state of impregnating varnish in various vacuum pressure impregnating in the vacuum environment to realize rapid vacuum performance test, so that the utility model plays the leading action for practical production. The varnish quantity used in the test is little, the time is short, the equipment is compact, the occupation of land is little, and the operation is convenient and reliable. The utility model is controlled by a PLC to realize the fully automatic operation, and is suitable for the tests in the laboratories of research units and is also suitable for the tests in the insulation laboratories of enterprises.
Description
The utility model relates to a kind of impregnating varnish vacuum characteristic experimental rig, relates in particular to the vacuum characteristic experimental rig of electric winding insulation impregnating varnish.
For a long time, when adopting vacuum pressure impregnation that electric winding is carried out insulation processing, the vacuum degree that different impregnating varnishes is corresponding different can produce " foamization " (being commonly called as " foaming ") phenomenon.This phenomenon can hinder the infiltration of lacquer to winding, influences dipping effect and insulation quality.
To this, the measure that in the past had continues the impregnating varnish in the input vacuum tank is vacuumized, exactly till lather collapse.This is based on the viewpoint of " causing foamization by air in the lacquer ".Its result, often cause a large amount of volatilizations of solvent contained in the lacquer or diluent and other lower-molecular substance and extracted, cause coating with lacquer that viscosity uprises rapidly and pot life of influencing impregnating effect and lacquer, serious even final state of cure that can cause influencing contained insulating impregnating varnish in the winding.Also have or not the plan of arranging, have to " foamization " at one's discretion.
Result according to nearest research and test shows, vacuum " foamization " phenomenon of impregnating varnish and " foamization " vacuum degree thereof are directly relevant with the vapour pressure of the interior contained composition of lacquer liquid and boiling point and proportion.For example, solvent impregnated lacquer is arranged, more be easy to generate vacuum " foamization " phenomenon just than solvent-free immersion paint.So, should be according to the inner contained composition of impregnating varnish, and they make the characteristic that as a whole lacquer liquid is showed under vacuum condition, seek to solve the way of " foamization " phenomenon.
Development along with modern science and technology progress and electronics and information industry, the new product of electric winding continues to bring out, the old product upgrading, the range of application of vacuum pressure impregnation just further enlarges, and derives vacuum impregnation, vacuum continuous impregnation and vacuum pressure continuous impregnating or the like.Though the above-mentioned all kinds of difference that has, but still be classified as vacuum pressure impregnation, and the phenomenon of impregnating varnish vacuum " foamization " all takes place to some extent.Solve as early as possible " foamization ", extremely urgent.
Obviously, only prevent " foamization " phenomenon, only need measure " foamization " vacuum degree of this impregnating varnish, will flood vacuum degree control according to this and get final product before in " foamization ".At present, measure " foamization " vacuum degree, a kind of is in the production scene, with the vacuum pressure impregnation complete set of equipments impregnating varnish in the impregnation tank is carried out vacuum test; Another kind is in the laboratory, with vacuum pump and vacuum meter the impregnating varnish in the sealed glass container is carried out vacuum test.Before a kind of because equipment is huge, thus, the waste long of test with many, time of lacquer greatly, cost is high.This cause just, scene are only done the test of " foamization " vacuum degree, generally other vacuum characteristic test of impregnating varnish are not carried out.Because equipment bulky complex, test use the lacquer amount big, and produce with lacquer often before the test and buy, so in a single day " foamization " vacuum degree of lacquer can not satisfy specification requirement, technology just can not get guaranteeing.In other words, be exactly that test lacks leading effect.The back is a kind of, though be to test in the laboratory, testing equipment is little and simple and easy, and using of test coated with lacquer less, the time is short, cost is low, and test also has certain leading effect.Exactly because but also equipment is excessively simple and crude, it can only make single " foamization " vacuum test, can not carry out other vacuum characteristic test of impregnating varnish.
The utility model is to provide a kind of impregnating varnish vacuum characteristic experimental rig for all kinds of vacuum pressure impregnations.This experimental rig can simulate actual production process easily, whole vacuum characteristics of impregnating varnish are comprised that " foamization " characteristic carries out fast testing.
Principal character of the present utility model is: (1) is contained paint can 24. and 26., vacuum condensation jar 36., refrigerating units 34., test product sampling cup 31. etc. by vacuum unit 2., vacuum pressure reserveir 5., vacuum and is constituted an impregnating varnish vacuum characteristic pilot system that independence is complete; (2) vacuum unit 2. is contained paint can 24., 26. with vacuum pressure reserveir 5. and vacuum respectively and vacuum condensation jar 36. connects, vacuum pressure reserveir 5. is contained paint can 24., 26. with vacuum condensation jar 36. and vacuum respectively and is connected, vacuum condensation jar 36. is contained paint can 24., 26. with refrigerating units 34. and vacuum respectively and is connected, and vacuum is contained paint can 24. and 26. and connected with test product sampling cup 31. respectively; (3) by gas take 7., 9., 11. respectively with after air filter 15., 14., 13. is connected, again respectively with bypass valve 8., 10., 12. air delivering pipelines in parallel that compose in parallel, place between vacuum pressure reserveir 5. and the vacuum condensation jar 36. respectively, vacuum pressure reserveir 5. and vacuum are contained between the paint can 24. and 26., vacuum unit 2. and vacuum are contained on the gas pipeline between the paint can 24. and 26.; (4) by reversal valve 27., 29. respectively with advance to coat with lacquer valve 28. and sample valve 30. and connect after, on the H of the two center line short circuit type transmission pipe in parallel road, respectively test product sampling cup 31. and vacuum are contained paint can 24. and 26. and are linked together.(5) connect with air filter 22., 21. respectively by pressure-relief valve 18., 20. and constitute filter gas release pipeline, contain paint can 26., 24. with vacuum respectively and be connected.
Typical structure of the present utility model is referring to shown in the Figure of description, and it is an embodiment preferably of the present utility model.Wherein each label and title all are listed as follows:
1. atmospheric valve 2. vacuum units 3. solenoid vacuum valves 4. break valves
5. vacuum pressure reserveir 6. pressure vacuum gauges 7. gas takes 8. bypass valves
9. gas take 10. bypass valves 11. gas takes 12. bypass valves
13. air filter 14. air filters 15. air filters 16. break valves
17. break valve 18. pressure-relief valves 19. break valves 20. pressure-relief valves
21. air filter 22. air filters 23. pressure vacuum gauges 24. vacuum are contained paint can
25. containing paint can 27. reversal valves 28., pressure vacuum gauge 26. vacuum advance to coat with lacquer valve
29. reversal valve 30. sample valves 31. test product sampling cups 32. are put the lacquer valve
33. evaporator 34. refrigerating units 35. bleeder valves 36. vacuum condensation jars
In order to further specify typical structure of the present utility model and their effect, existing just main test is used and is described below:
1. test is prepared
At first, close all valves.Then, start vacuum unit 2. and solenoid vacuum valve 3., open break valve 4., vacuum pressure reserveir 5. is vacuumized the storage negative pressure.Reach the vacuum degree value that pressure vacuum gauge 6. is set, promptly close break valve 4., the vacuum reservoir pressure finishes.
Open bypass valve 12., break valve 16. and 17. and 19., reversal valve 29. and 27., sample valve 30., vacuum condensation jar 36., vacuum Sheng paint can 24. and 26., test product sampling cup 31. are vacuumized dehumidifying.When reaching pressure vacuum gauge 25. and the 23. vacuum degree values of setting, promptly close bypass valve 12., break valve 16. and 17. and 19., reversal valve 29. and 27., sample valve 30. and vacuum unit 2. and solenoid vacuum valve 3..Start refrigerating units 34. simultaneously, make evaporator 33. work,, and remain on the vacuum condensation temperature spot of setting the cooling of the space in the vacuum condensation jar 36..Test ready.
2. vacuum is advanced lacquer
Finish " 1. test prepare ", the conduit that feeding is sent the sample lacquer with advance to coat with lacquer valve 28. and be connected.Open into lacquer valve 28. and reversal valve 27., sample is coated with lacquer slow suction vacuum contain paint can 24..When the sample lacquer arrives quantitative liquid level, promptly close into lacquer valve 28. and reversal valve 27..Advancing lacquer finishes.
3. vacuum " foamization " test
Finish in " 2. vacuum is advanced lacquer ", start vacuum unit 2. and solenoid vacuum valve 3., open gas take 11. and break valve 19., vacuum is contained paint can 24. gas clean-up gradually.Being come to life by the sample lacquer in vacuum is contained paint can 24., i.e. generation " foamization " phenomenon, vacuum degree at this moment are exactly " foamization " vacuum degree of being coated with lacquer by sample.Close vacuum unit 2. and solenoid vacuum valve 3., gas take 11. and break valve 19..Vacuum " foamization " off-test.
4. surplus lacquer emptying
Open pressure-relief valve 20., reversal valve 27. in order, advance to coat with lacquer valve 28., vacuum is contained surplus lacquer emptying in the paint can 24., flow into paintpot by gravity.After the surplus lacquer emptying, promptly close pressure-relief valve 20., reversal valve 27., advance to coat with lacquer valve 28..If need to repeat " foamization " test or other test, then continue from " 1. test is prepared ".
5. the sticking temperature test of vacuum
Finish in " 2. vacuum is advanced lacquer ", start vacuum unit 2. and solenoid vacuum valve 3., open break valve 4., gas take 7., break valve 16. and 19., make vacuum contain paint can 24. and reach the vacuum degree value that pressure vacuum gauge 23. is set, and keep regular hour t.
A. then, close break valve 19., open pressure-relief valve 20., reversal valve 27. and 29. in order, vacuum is contained paint can 24. filter releases, make all being sent into vacuum by the sample lacquer lentamente by vacuum pressure reduction and contain paint can 26. wherein through air filter 21..Close reversal valve 29. and 27., pressure-relief valve 20. more in order, open break valve 19., vacuum is contained paint can 24. vacuumize, and remain on the vacuum degree value of pressure vacuum gauge 23. settings.Simultaneously, open break valve 17., make vacuum contain paint can 26. and reach the vacuum degree value that pressure vacuum gauge 25. is set, and keep regular hour t.
B. then, close break valve 17., open pressure-relief valve 18., reversal valve 29. and 27. in order, vacuum is contained paint can 26. filter releases, make all being sent into vacuum by the sample lacquer lentamente by vacuum pressure reduction and contain paint can 24. wherein through air filter 23..Close reversal valve 27. and 29., pressure-relief valve 18. more in order, open break valve 17., vacuum is contained paint can 26. vacuumize, and remain on the vacuum degree value of pressure vacuum gauge 25. settings.Simultaneously, open break valve 19., make vacuum contain paint can 24. and reach the vacuum degree value that pressure vacuum gauge 23. is set, and keep regular hour t.
C. so repeat a. and b., and after the round conveying of number of times was coated with lacquer n time by sample in accordance with regulations, order was opened reversal valve 27. and sample valve 30..This moment, vacuum Sheng paint can 24. and test product sampling cup 31. were all vacuum, were contained paint can 24 by action of gravity from vacuum by the sample lacquer and flowed into test product sampling cups 31..Behind the test product quantitative sampling, promptly close reversal valve 27., stop sampling.Open into lacquer valve 28. and bleeder valve 35. again, to the emptying of the lacquer of the sample in the test product sampling cup 31..After taking out sample, close into lacquer valve 28. and bleeder valve 35..The test product sampling finishes.Open reversal valve 29. test product sampling cup 31. and vacuum Sheng paint can 26. are together vacuumized, and after the vacuum degree value that reaches pressure vacuum gauge 25. settings, close reversal valve 29. and sample valve 30..
D. repeat a., b., c., d. in order.After number of times takes out by sample lacquer m time in accordance with regulations, promptly close vacuum unit 2., solenoid vacuum valve 3., break valve 4., gas take 7..Vacuum is glued warm off-test.To being coated with lacquer of taking out, carry out performance tests such as viscosity, gel, curing immediately, and carry out machinery and electric performance test solidifying the back sample by sample.
6. vacuum volatilization test
Finish in " the 5. sticking temperature test of vacuum ", open pressure-relief valve 20., break valve 16. and 19., vacuum in the vacuum condensation jar 36. is filtered release through air filter 21., open bleeder valve 35. again, vacuum volatilization part condensate liquid emptying of being coated with lacquer by sample of evaporator 33. condensations is taken out, the liquid sample is carried out the fugitive constituent experiment of weighing.Close pressure-relief valve 20., break valve 16. and 19. again, close refrigerating units 34., evaporator 33. is quit work.The vacuum volatilization off-test.
7. vacuum shock test
Vacuum pressure reserveir 5. and by gas take 9. and the air delivering pipeline in parallel that composes in parallel with bypass valve 10. again after air filter 14. is connected, be mainly used in vacuum condensation jar 36., vacuum are contained paint can 24. and 26., test product sampling cup 31. and to the various samples that need not test vacuum volatilization part, carried out vacuum and impact the dehumidifying test.Fairly simple because of this test, its process is just no longer carefully stated.
From above-mentioned test is used as seen, the utlity model has and can truly intactly simulate running status in vacuum environment of impregnating varnish in the various vacuum pressure impregnations, realize the fast vacuum attribute testing, to production practices play that leading effect, the used lacquer amount of test are short with the time less, facility compact is taken up an area of little, convenient and reliable operation, controlled advantage such as full automatic working by PLC.Both be suitable for research unit's laboratory test, also be suitable for enterprise's insulation test chamber test.Use this equipment, can promote enterprise further in the vacuum pressure impregnation production technology.Economic benefit and social benefit are all good.
Claims (1)
1. impregnating varnish vacuum characteristic experimental rig is characterized in that: (1) is contained paint can 24. and 26., vacuum condensation jar 36., refrigerating units 34., test product sampling cup 31. etc. by vacuum unit 2., vacuum pressure reserveir 5., vacuum and is constituted an impregnating varnish vacuum characteristic pilot system that independence is complete; (2) vacuum unit 2. is contained paint can 24., 26. with vacuum pressure reserveir 5. and vacuum respectively and vacuum condensation jar 36. connects, vacuum pressure reserveir 5. is contained paint can 24., 26. with vacuum condensation jar 36. and vacuum respectively and is connected, vacuum condensation jar 36. is contained paint can 24., 26. with refrigerating units 34. and vacuum respectively and is connected, and vacuum is contained paint can 24. and 26. and connected with test product sampling cup 31. respectively; (3) by gas take 7., 9., 11. respectively with after air filter 15., 14., 13. is connected, again respectively with bypass valve 8., 10., 12. air delivering pipelines in parallel that compose in parallel, place between vacuum pressure reserveir 5. and the vacuum condensation jar 36. respectively, vacuum pressure reserveir 5. and vacuum are contained between the paint can 24. and 26., vacuum unit 2. and vacuum are contained on the gas pipeline between the paint can 24. and 26.; (4) by reversal valve 27., 29. respectively with advance to coat with lacquer valve 28. and sample valve 30. and connect after, on the H of the two center line short circuit type transmission pipe in parallel road, respectively test product sampling cup 31. and vacuum Sheng paint can 24. and 26. are linked together, (5) connect with air filter 22., 21. respectively by pressure-relief valve 18., 20. and constitute filter gas release pipeline, contain paint can 26., 24. with vacuum respectively and be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02266073 CN2567749Y (en) | 2002-08-06 | 2002-08-06 | Testing device for impregnating varnish vacuum performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02266073 CN2567749Y (en) | 2002-08-06 | 2002-08-06 | Testing device for impregnating varnish vacuum performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2567749Y true CN2567749Y (en) | 2003-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02266073 Expired - Fee Related CN2567749Y (en) | 2002-08-06 | 2002-08-06 | Testing device for impregnating varnish vacuum performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2567749Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1787134B (en) * | 2005-12-13 | 2010-05-12 | 中电电气集团有限公司 | Technique for impregnating varnish of half packed 10KV grade high voltage coil |
| CN101950642A (en) * | 2010-09-16 | 2011-01-19 | 中国电力科学研究院 | Vacuum insulation oil impregnating device and method thereof |
| CN105609223A (en) * | 2016-01-21 | 2016-05-25 | 重庆大学 | Multifunctional vacuum impregnating equipment |
-
2002
- 2002-08-06 CN CN 02266073 patent/CN2567749Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1787134B (en) * | 2005-12-13 | 2010-05-12 | 中电电气集团有限公司 | Technique for impregnating varnish of half packed 10KV grade high voltage coil |
| CN101950642A (en) * | 2010-09-16 | 2011-01-19 | 中国电力科学研究院 | Vacuum insulation oil impregnating device and method thereof |
| CN101950642B (en) * | 2010-09-16 | 2013-04-17 | 中国电力科学研究院 | Vacuum insulation oil impregnating device and method thereof |
| CN105609223A (en) * | 2016-01-21 | 2016-05-25 | 重庆大学 | Multifunctional vacuum impregnating equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |