SU1651260A1

SU1651260A1 - Device for locating metallic object in raw mass

Info

Publication number: SU1651260A1
Application number: SU894645253A
Authority: SU
Inventors: Александр Ефремович Гольдштейн; Владимир Константинович Жуков; Сергей Александрович Калганов; Виктор Ефимович Коновалов
Original assignee: Научно-исследовательский институт интроскопии Томского политехнического института им.С.М.Кирова
Priority date: 1989-02-01
Filing date: 1989-02-01
Publication date: 1991-05-23

Abstract

Изобретение-относитс к контрольно- измерительной технике и, в частности, к вихретоковым устройствам дл обнаружени металлических объектов и частиц в потоке технологического сырь и дл определени их местоположени . Цель изобретени - повышение точности. В устройство , содержащее вихретоковый преобразователь с одной возбуждающей 1 и двум измерительными 3, 4 обмотками плоскости витков которых параллельны, генератор 6, блоки 7, 8 выделени вносимых напр жений вихретокового преобразовател , блок 9 определени отношений, введены треть и четверта измерительные обмотки 5 и 2, соединенные соответ венно с первой и второй измерительными обмотками последовательно-встречно . Центры витков измерительных обмоток лежат на одной пр мой и равноудалены один от другого, обмотки пар чередуютс . В устройстве, за счет введени дополнительных обмоток и их взаимоположени , а также их размещени относительно зоны контрол , повышаетс чувствительность к наличию металлического объекта в массе сырь . 4 ил. s ЁThe invention relates to measurement instrumentation and, in particular, to eddy current devices for detecting metallic objects and particles in the process flow and for determining their location. The purpose of the invention is to increase accuracy. In the device containing the eddy current transducer with one exciting 1 and two measuring 3, 4 windings of the plane of the coils which are parallel, the generator 6, blocks 7, 8 of the allocation of applied voltages of the eddy current transducer, the ratio determination unit 9, the third and fourth measuring windings 5 and 2 , connected respectively with the first and second measuring windings in series-counter. The centers of the turns of the measuring windings lie on one straight line and equidistant from one another, the windings of the pairs alternate. In the device, due to the introduction of additional windings and their relative position, as well as their placement relative to the control zone, the sensitivity to the presence of a metal object in the bulk of the raw material is increased. 4 il. s Ё

Description

Фие.1Phie.1

ФигЬFig

Claims

Claim

A device for determining the coordinates of a metal object in the mass of raw materials, containing a eddy current transducer with one exciting and two measuring windings, the planes of the turns of which are parallel, a generator connected to the excitation winding by the output, the first and second eddy current transducer voltage isolation blocks connected by the first inputs respectively to the first and the second measuring windings, and the second with the output of the generator, a relationship determination unit connected to the first and second inputs to the outputs, respectively, of the first and second blocks of separation of the introduced voltages, characterized in that, in order to improve accuracy, it is equipped with a third and fourth measuring windings connected in series with each other with the first and second measuring windings and forming two pairs of windings with them, the centers of the measuring turns windings lie on one straight line and are equidistant from one another, the windings of pairs alternate.