SI23086A - Procedure of protection of capacitor coil with epoxy resin - Google Patents
Procedure of protection of capacitor coil with epoxy resin Download PDFInfo
- Publication number
- SI23086A SI23086A SI200900168A SI200900168A SI23086A SI 23086 A SI23086 A SI 23086A SI 200900168 A SI200900168 A SI 200900168A SI 200900168 A SI200900168 A SI 200900168A SI 23086 A SI23086 A SI 23086A
- Authority
- SI
- Slovenia
- Prior art keywords
- condenser
- rolls
- capacitor
- epoxy resin
- boiler
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000003822 epoxy resin Substances 0.000 title claims abstract description 10
- 229920000647 polyepoxide Polymers 0.000 title claims abstract description 10
- 239000003990 capacitor Substances 0.000 title abstract description 30
- 150000002118 epoxides Chemical class 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 239000004593 Epoxy Substances 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 2
- 238000006116 polymerization reaction Methods 0.000 claims description 2
- 238000005470 impregnation Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000011888 foil Substances 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
- 239000002985 plastic film Substances 0.000 description 5
- 229920006255 plastic film Polymers 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 235000015112 vegetable and seed oil Nutrition 0.000 description 3
- 239000008158 vegetable oil Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- VDEUTRIMVYSCKW-UHFFFAOYSA-N acetyl octadecaneperoxoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OOC(C)=O VDEUTRIMVYSCKW-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229920006378 biaxially oriented polypropylene Polymers 0.000 description 1
- 239000011127 biaxially oriented polypropylene Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/32—Wound capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
- H01G13/02—Machines for winding capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
Description
POSTOPEK ZAŠČITE KONDENZATORSKEGA ZVITKA Z EPOKSI SMOLOPROCEDURE FOR PROTECTING A CONDENSER COVER WITH EPOXY RESIN
Predmet izuma je postopek zaščite kondenzatorskega zvitka iz metalizirane plastične folije z epoksi smolo. Postopek impregnacije, pri katerem zvitek najprej sušimo v vakuumu pri povišani temperaturi, impregniramo s tekočim epoksidom in nato odcedimo, omogoča izvedbo kondenzatorja, pri katerem je izločen vpliv okolja, kar ima za posledico stabilno kapacitivnost kondenzatorja in dolgo življenjsko dobo. Izum sodi v razred H01G 4/22 Mednarodne patentne klasifikacije.The subject of the invention is a method of protecting a capacitor roll of metallized plastic film with epoxy resin. An impregnation process in which the roll is first dried in vacuo at elevated temperature, impregnated with liquid epoxy and then drained allows the condenser to be eliminated, which eliminates the influence of the environment, resulting in a stable capacitor capacitance and a long life. The invention belongs to class H01G 4/22 of the International Patent Classification.
Tehnični problem, ki ga predložen postopek in sama izvedba kondenzatorja uspešno rešuje, je ustrezna zaščita metalpolipropilenskega kondenzatorskega zvitka za preprečitev oksidacije tanke metalizirane obloge, občutljive na prisotnost kisika in zračne vlage.A technical problem successfully solved by the present process and the performance of the condenser is the proper protection of the metalpolypropylene condenser roll to prevent the oxidation of a thin metallized liner, sensitive to the presence of oxygen and air humidity.
Vplive okolja na kondenzator lahko preprečimo z zaščito kondenzatorskih zvitkov. S primernim sredstvom preprečimo oksidacijo tanke metalizirane obloge občutljive na prisotnost kisika in vlage, ter s tem tudi zmanjšamo število parcijalnih praznjenj in s tem padec kapacitivnosti kondenzatorja v njegovi življenjski dobi. Poznani so v glavnem trije načini zaščite metalpolipropilenskega kondenzatorskega zvitka in sicer z biološko razgradljivim rastlinskim oljem, polnitev s plinom in zalivanje kondenzatorskega svitka z epoksidom. Slaba stran zaščite z biološko razgradljivim rastlinskim oljem je visoka teža in možnost puščanja konenzatorjev, slaba stran kondenzatorjev polnjenih s plinom je možnost uhajanja plina, medtem ko je slaba stran kondenzatorjev zalitih z epoksidom visoka lastna teža kondenzatorja.The influence of the environment on the capacitor can be prevented by protecting the capacitor rolls. With a suitable agent, we prevent the oxidation of a thin metallised liner sensitive to the presence of oxygen and moisture, and thus also reduce the number of partial discharges and, consequently, the decrease in capacitance of the capacitor over its lifetime. There are basically three ways to protect a metalpolypropylene condenser roll by using biodegradable vegetable oil, filling it with gas, and watering the condenser coil with epoxy. The downside of biodegradable vegetable oil protection is the high weight and the possibility of leakage of the capacitors, the downside of the gas-filled condensers is the possibility of gas leakage, while the downside of the epoxy-coated capacitors is the high natural weight of the condenser.
Predložen izum se nanaša na nizkonapetostne močnostne kondenzatorje, ki se uporabljajo za zboljšanje faktorja moči na nizki napetosti, kot tudi pri motorskih kondenzatorjih in kondenzatorjih za fluorescenco izdelanih v MKP tehnologiji.The present invention relates to low-voltage power capacitors used to improve the low-voltage power factor, as well as to motor capacitors and capacitors for fluorescence manufactured in MKP technology.
Splošno znano je da so kondenzatorji za te namene sestavljeni iz enega ali več kondenzatorskih elementov. Vsak element je sestavljen iz dveh visoko kvalitetnih biaksialno orientiranih polipropilenskih folij, ki služita kot dielektrik, na kateri je pod vakuumom naparjena tenka plast aluminija, cinka ali mešanica obojega in služita kot elektrodi kondenzatorja. Obe elektrodi sta na čelni strani kondenzatorskega elementa kontaktirani preko šopirne plasti, na katero se prispajkajo izvodi. Znano je tudi da so veliki problemi z obstojnostjo tenkih, naparjenih oblog kondenzatorja. Glavni vzrok za slabo obstojnost oblog sta prisotnost vlage in zraka. Zato se je že od samega začetka razvoja MKP tehnologije razmišljalo o eliminaciji teh dveh glavnih krivcev za slabo kvaliteto kondenzatorjev in njihovo kratko življenjsko dobo.It is generally known that capacitors for this purpose consist of one or more capacitor elements. Each element consists of two high-quality biaxially oriented polypropylene films which serve as a dielectric on which a thin layer of aluminum, zinc, or a mixture of both, and as a capacitor electrode are charged under vacuum. Both electrodes are contacted at the front of the condenser element via a shielding layer to which the leads attach. There are also known to be major problems with the persistence of thin, vaporized capacitor linings. The main cause of poor lining durability is the presence of moisture and air. Therefore, from the very beginning of the development of MCP technology, it has been considered to eliminate these two main culprits for the poor quality of the capacitors and their short life.
Kot najkvalitetnejše in najbolj praktične ter največkrat uporabljene tehnologije zaščite so se izkazale zalivanje z epoksi zalivko, smolo na bazi rastlinskih olj in uporaba nevtralnega izolacijskega plina N2. Vse te tehnologije v večji ali manjši meri zagotavljajo, da je sprememba kapacitivnosti med življenjsko dobo minimalna in da imajo kondenzatorji dolgo življenjsko dobo.Waterproofing with epoxy sealant, vegetable oil based resin and use of neutral N2 insulation gas have proven to be the highest quality and most practical and commonly used protection technologies. All these technologies, to a greater or lesser extent, ensure that the change in capacitance during the lifetime is minimal and that the capacitors have a long life.
Možnosti zaščite kondenzatorskega zvitka z dielektričnim fluidom, ki vsebuje acetoksistearat je opisana v ameriškem patentnem dokumentu US 4,609,969. Pri tej izvedbi zaščite kondenzatorskega zvitka obstaja možnost puščanja kondenzatorja ob poškodbah plašča le-tega in posledično okvare kondenzatorja.The options for protecting a capacitor roll with a dielectric fluid containing acetoxystearate are described in U.S. Patent No. 4,609,969. In this embodiment, the protection of the capacitor coil is liable to leak the condenser in case of damage to the condenser jacket and consequently damage to the capacitor.
Predmet izuma je postopek zaščite kondenzatorskega zvitka iz io metalizirane plastične folije z epoksi smolo kjer zvitek najprej sušimo v vakuumu pri povišani temperaturi, impregniramo s tekočim epoksidom in nato odcedimo.The subject of the invention is a method of protecting a capacitor roll from io metallized plastic film with epoxy resin where the roll is first dried in vacuo at elevated temperature, impregnated with liquid epoxide and then drained.
Izum bomo podrobneje obrazložili na osnovi izvedbenega primera in slike 1, ki kaže kondenzator v prerezu.The invention will be explained in more detail on the basis of the embodiment and figure 1, which shows the cross-section of the capacitor.
Kondenzator, ki je v prerezu prikazan na sliki 1 ima v ohišju 1 nameščen spodnji izolacijski vložek 2 in zgornji izolacijski vložek 3, med katerima leži kondenzatorski zvitek 4. Električna povezava 5,6 je prispajkana med spajkana mesta 8,11 in je obdana z izolacijo 7. Vrh kondenzatorja zapira tesnilna plošča 9, med spajkanima mestoma 11 pa je priključen še praznilni upor 10.The cross-section of the capacitor shown in Fig. 1 has in the housing 1 a lower insulating insert 2 and an upper insulating insert 3, between which there is a capacitor roll 4. The electrical connection 5,6 is soldered to the soldering points 8,11 and is surrounded by insulation. 7. The top of the condenser is closed by the sealing plate 9 and a discharge resistor 10 is connected between the soldering points 11.
Po postopku zaščite kondenzatorskega zvitka iz metalizirane plastične folije z epoksi smolo po izumu zaščito kondenzatorskih zvitkov 4 izvedemo tako, da kondenzatorske zvitke 4 najprej zložimo v posebej pripravljene košare, ki so prirejene za namestitev v impregnacijske kotle. Tako zložene zvitke vstavimo v kotle in hermetično zapremo. Kotel mora biti grajen tako, da vzdrži visok vakuum in mora dobro tesniti.According to the method of protecting a condenser roll made of metallized plastic film with an epoxy resin according to the invention, the protection of condenser rolls 4 is carried out by first folding the condenser rolls 4 into specially prepared baskets adapted for placement in impregnation boilers. Put the folded rolls in the boilers and seal them tightly. The boiler must be constructed to withstand high vacuum and must be well sealed.
Sledi postopek sušenja pod vakuumom. Sušenje zvitkov traja pri 5 povišani temperaturi od 40 do 120°C toliko časa, da izločimo iz zvitkov in kotla zrak in vso vlago, običajno je to od 24 do 48 ur. Čas vakuumiranja je odvisen od velikosti kotla in števila zvitkov v njem, od moči vakuumskih črpalk in stopnje vlage.The following is a vacuum drying process. Drying the rolls takes 5 elevated temperatures from 40 to 120 ° C until the air and all the moisture, usually 24 to 48 hours, are removed from the rolls and the boiler. The vacuuming time depends on the size of the boiler and the number of rolls in it, the power of the vacuum pumps and the degree of humidity.
Epoksidno zalivko moramo predhodno v rezervoarju pripraviti tako, da io je segreta na temperaturo na katero so segreti zvitki, ne sme vsebovati vlage in drugih nedovoljenih primesi.The epoxy seal must first be prepared in the tank so that the io is heated to the temperature at which the rolls are heated, and must be free from moisture and other unauthorized impurities.
Tako pripravljeno epoksidno zalivko počasi spuščamo v kotel z zvitki dokler ne sega cca 5 cm nad višino zvitkov. Tako zalite zvitke še nekaj ur vakuumiramo nakar spustimo v kotel zrak, prečrpamo zalivko v rezervoar, kotel odpremo, košaro z impregniranimi zvitki pa dvignemo in damo na odcejanje za 1 uro.The epoxy seal thus prepared is slowly lowered into the boiler with rolls until it reaches approximately 5 cm above the height of the rolls. The soaked rolls are then vacuum evacuated for a few hours, then the air is lowered into the boiler, the seal is pumped into the tank, the boiler is opened, and the basket with impregnated rolls is lifted and drained for 1 hour.
Polimerizacija epoksida ki ostane na kondenzatorskih zvitkih 4 izvajamo v pečeh na temperaturi višji od 100°C, toliko časa dokler se epoksid ne strdi.The polymerization of the epoxide remaining on the condenser rolls 4 is carried out in furnaces at a temperature higher than 100 ° C until the epoxy has solidified.
2o Tako obdelane kondenzatorske zvitke 4 na standarden način hermetično zapremo.2o The capacitor rolls 4 thus treated are sealed in a standard manner.
Postopek zaščite kondenzatorskega zvitka iz metalizirane plastične folije z epoksi smolo po izumu zadovoljivo rešuje zastavljen tehnični problem in omogoča, da iz metalizirane plastične folije z vakuumskim sušenjem in epoksi impregnacijo iztisnemo zrak iz čelnih strani zvitka in tako preprečimo vdor vlage med ovoje in oksidacijo tenke metalizirane obloge občutljive na prisotnost kisika in vlage, zmanjša pa se tudi število parcijalnih praznjenj in s tem padec kapacitivnosti kondenzatorja v njegovi življenjski dobi.The method of protecting the condenser roll from metallized plastic film with epoxy resin according to the invention satisfactorily solves the technical problem and allows the metallized plastic film by vacuum drying and epoxy impregnation to expel the air from the front sides of the roll, thus preventing the ingress of moisture between the shell and oxidation of the thin metal sensitive to the presence of oxygen and moisture, and the number of partial discharges is reduced and thus the capacitor capacitance is reduced over its lifetime.
Claims (3)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SI200900168A SI23086A (en) | 2009-06-19 | 2009-06-19 | Procedure of protection of capacitor coil with epoxy resin |
| PCT/SI2010/000037 WO2010147562A1 (en) | 2009-06-19 | 2010-06-18 | Method of protection condenser roll with epoxy resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SI200900168A SI23086A (en) | 2009-06-19 | 2009-06-19 | Procedure of protection of capacitor coil with epoxy resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SI23086A true SI23086A (en) | 2010-12-31 |
Family
ID=43126968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SI200900168A SI23086A (en) | 2009-06-19 | 2009-06-19 | Procedure of protection of capacitor coil with epoxy resin |
Country Status (2)
| Country | Link |
|---|---|
| SI (1) | SI23086A (en) |
| WO (1) | WO2010147562A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106910636B (en) * | 2017-04-28 | 2018-08-28 | 苏州松控电子科技有限公司 | A kind of high-performance electric electrolysis condenser |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3649892A (en) * | 1970-07-13 | 1972-03-14 | Mallory & Co Inc P R | Capacitors utilizing bonded discrete polymeric film dielectrics |
| US4348712A (en) * | 1978-10-18 | 1982-09-07 | General Electric Company | Capacitor with embossed electrodes |
| US4609969A (en) | 1984-10-22 | 1986-09-02 | Emhart Industries, Inc. | Dielectric fluid for metallized polypropylene film capacitors |
| SE518095C2 (en) * | 2000-03-30 | 2002-08-27 | Evox Rifa Ab | Method of manufacturing an impregnated electrical component, such component, impregnated winding or stack and impregnated coil |
-
2009
- 2009-06-19 SI SI200900168A patent/SI23086A/en not_active IP Right Cessation
-
2010
- 2010-06-18 WO PCT/SI2010/000037 patent/WO2010147562A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010147562A1 (en) | 2010-12-23 |
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| OO00 | Grant of patent |
Effective date: 20110106 |
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| KO00 | Lapse of patent |
Effective date: 20160222 |