CS218867B1

CS218867B1 - The method of impregnating wound knots of large electric machines

Info

Publication number: CS218867B1
Application number: CS795278A
Authority: CS
Inventors: John Helfried; Jurgen Stender
Original assignee: John Helfried; Stender Joergen
Priority date: 1977-12-27
Filing date: 1978-12-01
Publication date: 1983-02-25
Also published as: DD134024A1; DD134024B1

Abstract

Vynález se týká způsobu impregnování vinutých uzlů velkých elektrických strojů a týká se výroby otáčejících se elektrických strojů. Cílem je vysoce kvalitní,racionálně zí skané impregnování vinutých statorů a rotorů nebo jednotlivých vinutých svazků jádra při odstranění problémů zpracovatelnosti nebo ztrát v důsledku zbylé pryskyřice ,podmíněné technologií. Úkol spočívá v úplném vyplnění impregnační pryskyřicí všech dutých prostor v drážkách bez použití vakua nebo tlaku, přičemž impregnační pryskyřice nemá zů stávat v nádržích. V souladu s vynálezem částečně odkryté drážky se naplňují zalitím vysoce reaktivní syntetické pryskyřice a při pomalém otáčení uzlu se nahřívají shora do želatinování syntetické pryskyřice.The invention relates to a method for impregnating winding assemblies of large electrical machines and relates to the production of rotating electrical machines. The aim is to achieve high-quality, rationally obtained impregnation of wound stators and rotors or individual core winding bundles while eliminating processability problems or losses due to residual resin, conditioned by technology. The task consists in completely filling all hollow spaces in the grooves with impregnating resin without the use of vacuum or pressure, while the impregnating resin should not remain in the tanks. In accordance with the invention, partially exposed grooves are filled by pouring in a highly reactive synthetic resin and, while slowly rotating the assembly, they are heated from above until the synthetic resin gels.

Description

PV OFFICE AND DISCOVERY.

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FORMATION

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Ejiaronapn προπζτκθ £ ase npz czjilhhx πθρθμθηηηχ Harpy3zax, nanpzMep, H3-3a bucokož nacTOTH nepeKJnoneHZZ, odecnenzsaeTcn £ ο ^ ςγοβθηηοθ 3aicpenneHze odMOTKH. HenροΜθ τογο, 3Ta nponzTKa no-cTzraeT zanecTBa BaKyyMHpoBaHHofi cnjiomHoz npomiTicz z TpedyeTno cpaBHemw c Hen ηθ3ηβήετθλβηηχ aKcnmyaTanzoHHo-TexHzzecKzx3aTpaT. B npoTZBonojiosHOCTB BaKyyMHofi ηροπζτκβ from προπζτκθ npozaTHBa-Hzeia ηθτ ηοτβρΒ προπζτοπΗοΑ cmojih £ Aze πρζ προπζτκθ ejr OT ^ & iiHXCTaTopoB, ksk T3K ee TpedyeTcn tojilko τθκ μηογο, ckojibko BXO Azt b Mannray and zanaonaH nponzTOZHan CMOJia zcnojiB3yeTCJi ηοΒτορ-ho. Πρζ 3tom 3aTpaTH Paddler BpeweHZ 3HazzTejiBHo MeiiBme, zewπρζ BazyyMíoS προπζτκθ.

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OFFICE FOR INVENTIONS AND DISCOVERY ON PV OAS 20 <939 PERSON / PftiL POST OFFER AND REF AND OUTPUT σ ο «ο ° —4 1. Cnocod ΠρΟΠΗΤΚΗ OdMOTaHHHX y & EOB ΟΛΒΙ e J 3 Ha3H πρπ Η0Π0Π £ 30ΒΗΗΗΗ 30βΒ &7;

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: PHO OFFICE INVENTORY AND DISCOVERY - PV.

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AND

Claims

OBJECT OF THE INVENTION

A method of impregnating wound knots of large electrical machines, wherein the grooves in the use of wedges for closing the grooves, including the interstices for passage of the impregnating agent, are filled with synthetic resin, liquid at room temperature and cured during heating; that partially uncovered grooves at a 45 ° inclination of the groove plane to the horizontal with the groove slot are filled with a pressure-free, high-reactive low surface tension synthetic resin by embedding it, the node being further rotated so that the groove position is compressed and the resin penetrates heating and rotating the knot and heating are matched with the synthetic resin, so that it gelatinizes over a quarter turn, repeating the heating during one revolution or several turns of the knot so often until all the grooves are filled with synthetic resin so that the grooves are fully filled with filler co-inflammatory and finally Wedges any synthetic resin, a heated thereby completely harden.

2. An impregnation method according to claim 1, characterized in that the synthetic resin is poured into the grooves until they are partially covered by 5 cm groove wedges, which are inserted with a 3 cm gap, then filled with grooves until they are filled and then placed on groove wedges complementary to both sides.

3. The method of impregnation according to claim 1, wherein the synthetic resin passes through the longitudinal grooves of the treated groove. 42-

4. The method of impregnation according to claim 1, wherein the synthetic resin is heated by an infrared emitter.

5. An impregnation process according to claim 4, wherein the synthetic resin is specially matched to an infrared emitter, in particular an epoxy resin in admixture with 20% finely dispersed electrically insulating pigment-dark color.

6. The method of impregnation according to claim 1, wherein the synthetic resin is heated by passing the heat from the pre-heated coil node.

7. The method of impregnation according to claim 1, wherein the synthetic resin is poured into grooves which are only partially covered.

8. The method of impregnation according to claim 1, wherein the synthetic resin flowing or dripping during embedding is trapped in the liquid tank.

9. An impregnation process according to claim 8, wherein the synthetic resin flowing or dripping with the diluent, particularly in ethyl glycol, is diluted and, as a result, immediately sprayed and sprayed onto the knot rotating at elevated speed. and then heats to harden. Recognized by the invention on the basis of the results of an expert review by the Office of Invention and Patenting, Berlin, DD.