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    • 5. 发明专利
    • INSULATION LIFE ESTIMATING METHOD OF ELECTRICAL MACHINERY
    • JPS5643566A
    • 1981-04-22
    • JP11952879
    • 1979-09-17
    • MITSUBISHI ELECTRIC CORP
    • ASAHI MITSUYOENOMOTO JIYUNZOUTANAKA SHIGEOHASHIZUME AIICHIROU
    • G01R31/12G01N30/88G01R31/30H01F41/12
    • PURPOSE:To estimate nondestructively the degree of insulation deterioration of the electrical machinery and apparatus, by paying attention to the inflection point in the retention diagram of resin showing chemical change correlated with characteristic of insulation deterioration of the insulating structure, installed to the electrical machinery and apparatus to be measured. CONSTITUTION:A monitoring column filled with resin showing chemical change correlated with characteristic of insulation deterioration of the insulating structure of the electrical machinery and apparatus, for instance, epoxy resin powder is installed in advance to the electrical machinery and apparatus, and this column is taken out at a proper time, at regular intervals. Subsequently, the retention diagram is prepared by installing this column to the negative-phase chromatograph, by which the inflection point (transition point of glass) is obtained, and a variation of the transition point of glass of insulating resin, accompanying the operation time is derived. And the degree of insulation of the electrical machinery and apparatus is estimated based upon the relation between deterioration of the dielectric breakdown voltage, accompanying the thermal deterioration which has been derived in advance by use of a model having the same insulating structure as the actual machinery and apparatus, and variation of the glass transition temperature of the filling resin, which has been measured by use of the monitoring column filled with insulating resin powder.
    • 10. 发明专利
    • Manufacture of electrodeposition coating
    • 电沉积涂料的制造
    • JPS594664A
    • 1984-01-11
    • JP11427382
    • 1982-06-29
    • Mitsubishi Electric Corp
    • HASHIZUME AIICHIROUMIFUJI WATARUYAMAMOTO YUKIOCHIDAI HIDEKI
    • C09D5/44
    • PURPOSE: To obtain an electrodeposition coating continuously in a short time, by applying an ultrafiltration, etc. to a water-dispersed type varnish to increase its liquid resistivity, then elimnating miscellaneous ions, followed by carrying out a formulation by incorporating the resultant varnish with both mica powder and water.
      CONSTITUTION: The tank 1 as a treating equipment is charged with a water-dispersed type varnish (prepared by dispersing an acid-added epoxy resin in a warm water containing cmmonia, followed by blowing a nitrogen gas) and an ion exchange water. The resultant mixture is fed to the permeable membrane 7 by a pump 4a, then separated into a concentrated liquid and a permeated one. The former, namely, the concentrated varnish, is returned to the tank 1; on the other hand, the latter is regenerated by an ion exchange resin 8 into purified water, and temporarily stored in a tank 10. This regenerated water 11 is returned to the tank 1 by a pump 4b. After repeating the above process several times, the resultant varnish is incorporated with mica powder and water, followed by agitating, thus obaining the objective electrodeposition coating.
      COPYRIGHT: (C)1984,JPO&Japio
    • 目的:为了在短时间内连续地获得电沉积涂层,通过对水分散型清漆进行超滤等来提高其液体电阻率,然后除去杂质,然后通过将所得清漆与 云母粉和水。 构成:作为处理装置的罐1装入水分散型清漆(通过将含酸的环氧树脂分散在含有氨的温水中,然后吹入氮气制备)和离子交换水。 将所得混合物通过泵4a进料到可渗透膜7,然后分离成浓缩液体和渗透膜。 前者,即浓缩清漆,返回到罐1; 另一方面,后者由离子交换树脂8再生成纯水,暂时储存在罐10中。该再生水11通过泵4b返回到罐1。 重复上述工艺几次后,将所得清漆与云母粉末和水混合,然后搅拌,从而获得目标电沉积涂层。