SU896562A1

SU896562A1 - Method of quality control of current conducting element insulation

Info

Publication number: SU896562A1
Application number: SU802910353A
Authority: SU
Inventors: Феликс Дмитриевич Лавдор; Эмма Терентьевна Красовская; Юрий АФанасьевич Ясинский
Original assignee: Украинский Заочный Политехнический Институт
Priority date: 1980-04-14
Filing date: 1980-04-14
Publication date: 1982-01-07

Description

() СПОСОБ КОНТРОЛЯ КАЧЕСТВА ИЗОЛЯЦИИ ТОКОВЕДУЩИХ ЭЛЕМЕНТОВ() METHOD OF QUALITY CONTROL OF INSULATION OF CURRENT ELEMENTS

1one

Изобретение относитс к измерительной технике и может быть использовано при контроле качества изол ции стержневых обмоток высоковольтных электрических машин.The invention relates to a measurement technique and can be used to control the quality of the insulation of the rod windings of high-voltage electrical machines.

Известен способ определени прочности эмалевых покрытий, заключающийс в том, что напр женно-деформированное состо ние изол ции создают, помеща кoнтpoлиpye ft tй объект в устройство дл испытани на изгиб, регистрируют сигналы акустической эмиссии, возникающее от дефектов, по которым определ ют качество изол ции П .A known method for determining the strength of enamel coatings, in which the stress-strain state of the insulation is created by placing a contoured object in the bend testing device, records the acoustic emission signals arising from defects that determine the quality of the insulation P .

Недостатком этого способа вл етс то, что токоведущий элемент находитс при испытани х в услови х, отличных от условий эксплуатации.The disadvantage of this method is that the current-carrying element is in tests under conditions different from the conditions of operation.

Наиболее близким к предлагаемому по технической сущности вл етс способ контрол качества изол ции токоведущих элементов, заключающийс в том, что создают в зоне контрол The closest to the proposed technical essence is a method of controlling the quality of the insulation of current-carrying elements, which consists in creating in the control zone

электромагнитное поле, пропускают по контролируемому элементу ггеремеи ный электрический ток и регистрируют сигналы акустической эмиссии, по которым суд т о качестве изол ции 123.The electromagnetic field, passes through a controlled element a moderated electric current and records acoustic emission signals that judge the quality of the insulation 123.

Недостатком этого способа вл етс низка производительность контре л .The disadvantage of this method is the low performance of the counter.

Цель изобретени - увеличение производительности контрол .The purpose of the invention is to increase the productivity of the control.

toto

Эта цель достигаетс за счет того , что дл создани электромагнитного пол размещают не менее, чем один дополнмтелы«1|й контролируемый токопровод щий элемент вблизи основ«5 ного и пропускают через него переменный электрический ток.This goal is achieved due to the fact that, in order to create an electromagnetic field, at least one complementary body of the 1st | controlled current-conducting element is placed near the bases of the fifth line and an alternating electric current is passed through it.

Способ заключаетс в следующем.The method is as follows.

Claims

An alternating current is applied to two current-carrying elements, covered with an insulating layer, arranged parallel to each other and connected in parallel. As a result of the interaction of two electromagnetic fields of current-carrying elements, oscillations of the elements themselves occur, and the force applied to each of them will be proportional to the square of the current flowing through it. If there is a defect in the insulating layer, acoustic emission signals occur and are recorded. By simultaneously controlling two current-carrying elements, the performance of the control is increased. Claims The method of controlling the quality of the insulation of current-carrying elements, which consists in creating an electromagnetic field in the control zone, passes an alternating electric current on the element being monitored and records acoustic emission signals that judge the quality of the insulation. that, in order to increase the performance of the control, in order to create an electromagnetic field, at least one additional controlled conductive element is placed near the main field and the transducer is passed through it variable electric current. Sources of information taken into account in the examination 1. USSR author's certificate N29888, cl. (5 01N 29/0, 1971 /

2. USSR author's certificate in application number 2803095/28, cl. G 01 N 29/0, 1979.