SU701828A1 - Method of making a high-voltage insulator - Google Patents

Description

one

The invention relates to the production of high voltage insulators used in electrical devices operating at cryogenic temperatures or in an SF6 gas.

A known method of manufacturing products, for example, high-voltage insulators, is made by pouring in the form of metal fasteners, previously machined with a frozen compound used for casting, and subsequent thermo-curing and cooling fll.

The disadvantage of this method is that, due to internal mechanical stresses, the resulting insulators under the conditions of thermopiclic impact crack, while the initial intensity of the appearance of partial discharges decreases sharply after one or two thermal shocks.

It is also known that epoxy casting compounds are subjected to additional heat treatment by

slow heating from 2 ° to 2 ° C and exposes are three times this temperature during those 3 hours. However, the specified aft does not allow liquidation, to build internal flows, and even increases them.

The purpose of the invention is to increase stability and maintain the operating voltage of the insulator under thermal cycling conditions.

The goal is achieved by the fact that according to the method of manufacturing a high-voltage insulator by pouring epoxy compound in the form of metal fasteners, previously machined with a frozen compound used for casting, and subsequent thermorecorrection and cooling after pouring the metal fasteners, the torus insulator is subjected to vacuum insulation after thermosetting, it is again heated to a temperature of 4 ° -60 ° C above the smashing temperature during 2-5 hours and ohly to give 4O-50 C. teche37 Hiie 8-14 hours, wherein K gachlihd 1chch oobra bo7KI POTVOrYaYuT rG 2-1,., P n m p of p. Of the L-chenio opornos V1nsok.ove) Ptng insulator for the layout of a superconducting cobol, Metal.Shch-choskie atymenti insulator before .gogging the compound predaggatznosozheffeitle subjected to mechanical treatment of the same by using the same kompante of the object, by means of the same kompante, it is in the same token with the help of the same kompante, it is in the same kompante, it is in the same kompante, it is in the same kompante, it is in the same kompante, it is in the same kompante, it is in the same kompante, it is in the same kompante, it is in the same token, by the help of the kompanii ohpazhye ta: lp kz1dkt-1 nitrogen to solid sssh sh. For the manufacture of an insulator 1gril en: -oil compound based on epoxy resin of the following composition: weight.h .: .ED-1655 ED-845 Isomethyltetrahydrothel phthalic. Anhydride of Simphp) 53 Boron nitride Tehpalno smglan: uro when teraratu mixture from The components of the components are evacuated in the PM uohlii YO mines temperature and the flow rate is 10–3–5 Mivi RT, Art. At the end of the vakur / a-shavashsh mixture, the mixture is shipped in advance B; the aggregate “p.o 120-, B, which is set before assembly, the treated oshyananpd method m-e-lytic elements. The form is placed in a vacuum - a sul or a silly bottom, where 1 r is ezod t vakuv - a photo-vyuto in leaks. .-: B yu mi irfiji tompum (5 rptu 1c j, 2r / C and xra exact pressure 3-5 hg. I after this (the law, found a heat insulating container with a compact composition, is placed in a thermostat. For the final heat treatment - and thermo-punching: X 2Og, 150 ° Cx2Och. After removing the finished insulator from the cooled to room temperature form, it is subjected to a sequential ... on the roar and cooling. To do this, go to: heat insulation -flove.shgy: k1lgteineo and heat it up to 150 ° C; t "e, to a temperature of 4 ° -6 ° C above the glass transition temperature, comp Und with speed1; o 0, .l ° C / i-3iK and then slowly cool jn i.io;, -: temperature,; zo temzrat: uray C with speed: Sm1 - O, mu, SKglshg repeat 2-4 times. The test results of pgl-gg-bohemiahs to sravneshgi with ize ::: t; ayyn are given in the table. 100 f: stop to actual thermal shock: ec / g -:. by immersing nzot15gtorov.: MQ: shchi:,;: and: ambient temperature; -3 or 1 & y., E the presence of internal g: | 1;: ethe, gay indicates a mismatch of the direct, measured when heatingKKT5s n reverse, intentional when okhla5k; de. SEY, the course of the relative-R size of the ooress q from temperat; ,, ггри .Л Р .омЛз-е-ч1ша..., hara-gerizaet: 1-gainu vnu-pe1ta: ... them nap eshket-g-1Y.

oluchgenggsh i kzvezhtny; visit pg krShchShr I through prototgpu and (contact / KHp .i o-tver zdeB: I, Skch.

The presence of Trestsin after thermo7 /: gifts (t / y)

Best for 91Lead for partial bits, k1 / mtl:

a) pachalg-lcha

b) P.kpa tormobudar

Hao-nsfTop, roll)

.150x20 159x48

- .ten

50

DU 15-.20

5-8

As can be seen from the table, the proposed C1 C method allows one to significantly increase the stability and preserve the working voltage of the insulators under the conditions of thermocyclic water action.

Claims (2)

Invention Formula A method of manufacturing a high-voltage insulator by pouring epoxy compound in the form of metal fasteners mechanically removed with a frozen compound used for casting, and subsequent thermo-hardening and cooling, in order to increase the stability and maintain the operating voltage of the insulator After thermo-cyclic exposure, after pouring the metal fasteners with a compound, the insulator is subjected to an evacuated vacuum and after the curing time it is heated again temperature 4O60 C above the glass transition tavmepatypy for 2-5 hours and cooled to 4O-5O C for 8-14 hours, the heat treatment process was repeated 2-4 times .. Sources of information taken into account in the examination. 1. Copyright svdedetstvo USSR № 638611, cl. C 08 L 63/00, 1976 (prototype). 2. Chern K. KI Epoxy compaunas and their use. L., Shipbuilding, 1967, p. 148.