SU847180A1

SU847180A1 - Device for iron-ore material non-destructive testing

Info

Publication number: SU847180A1
Application number: SU792824282A
Authority: SU
Inventors: Сергей Николаевич Скобцов; Рафаил Ефимович Леонов; Ольга Николаевна Липовцева
Original assignee: Свердловский Ордена Трудового Красногознамени Горный Институт Им. B.B.Вахрушева
Priority date: 1979-10-03
Filing date: 1979-10-03
Publication date: 1981-07-15

Description

Изобретение относится к неразрушающему контролю и может быть использовано для измерения прочности железорудных материалов, преимущественно окатышей.The invention relates to non-destructive testing and can be used to measure the strength of iron ore materials, mainly pellets.

Известно устройство для неразруша- ⁵клцего контроля железорудных материалов, содержащее электромагнитный преобразователь, включенный в колебательный контур генератора тока гармонической формы, последовательно соединенные с гейератором, блок преобразования и индикатор D ]·A device is known for non-destructive ⁵ tight control of iron ore materials, containing an electromagnetic transducer included in the oscillatory circuit of a harmonic current generator, connected in series with a geyerator, conversion unit and indicator D] ·

Недостаток данного устройства заключается в невысокой надежности контроля, что связано с зависимостью результатов измерения от вариации размеров и формы образцов железорудных материалов, например, окатышей.The disadvantage of this device is the low reliability of control, which is associated with the dependence of the measurement results on variations in the size and shape of samples of iron ore materials, for example, pellets.

Наиболее близким по технической _мсущности к изобретению является устройство для неразрушающего контроля железорудных материалов, содержащее параметрический электромагнитный преобразователь, последовательно соединенные генератор, в колебательный контур которого включен электромагнитный параметрический преобразователь, блок преобразования, включающий измерительный и компенсационный каналы и индикатор [2].The closest in technical essence to the _m invention is an apparatus for nondestructive testing of iron materials comprising parametric electromagnetic transducer, connected in series generator in which the oscillation circuit included solenoid parametric converter, the conversion unit comprising a measuring and compensation channels and the [2].

Однако й это устройство не обеспечивает подавления влияния вариации, размеров и формы образцов железорудных материалов на результаты контро ля.However, this device does not provide suppression of the influence of variations, sizes and shapes of samples of iron ore materials on the control results.

Цель изобретения - повышение надежности контроля.The purpose of the invention is to increase the reliability of control.

Поставленная цель достигается за счет того, что генератор выполнен релаксационным, а блок преобразования выполнен в виде двухвходового интегрирующего усилителя.This goal is achieved due to the fact that the generator is made relaxation, and the conversion unit is made in the form of a two-input integrating amplifier.

На чертеже приведена блок-схема устройства.The drawing shows a block diagram of a device.

Устройство для неразрушающего контроля железорудных материалов содержит электромагнитный преобразовательA device for non-destructive testing of iron ore materials contains an electromagnetic converter

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1, выполненный в виде полого цилиндра из немагнитного материала, на который намотана катушка индуктивности (не показана), и генератор 2.1, made in the form of a hollow cylinder of non-magnetic material, on which an inductor (not shown) is wound, and a generator 2.

Генератор 2 выполнен в виде релаксационного генератора, в колебательный контур которого включен электромагнитный-преобразователь I и соединен с измерительным входом двухвходового интегрирующего усилителя 3, соединенного вторым компенсационным входом с источником 4 постоянного опорного напряжения, а выходом с индикатором 5Generator 2 is made in the form of a relaxation generator, the electromagnetic circuit of which is included in the oscillatory circuit of I and is connected to the measuring input of a two-input integrating amplifier 3, connected by a second compensation input to a source of constant reference voltage 4, and an output with an indicator 5

Устройство работает следующим образом.The device operates as follows.

Генератор 2 вырабатывает импульсы прямоугольной формы, длительность кот, рых зависит от индуктивности катуш-. ки электромагнитного преобразователя I, определяемой магнитными свойствами взаимодействующего с ним образца железорудного материала. В то же время длительность импульсов в гораздо меньшей .степени зависит от формы и размера образцов.Generator 2 produces rectangular pulses, the duration of the cat, ryh depends on the inductance of the coil. ki of the electromagnetic converter I, determined by the magnetic properties of the sample of iron ore material interacting with it. At the same time, the pulse duration is much less dependent on the shape and size of the samples.

Импульсы, вырабатываемые генератором 2, поступают на измерительный вход двухвходового интегрирующего усилителя 3, скомпенсированного источником 4 постоянного опорного напряжения на Холостом ходу. Разностное напряжение усиливается усилителем 4 и регистрируется индикатором 5.The pulses generated by the generator 2, are fed to the measuring input of the two-input integrating amplifier 3, compensated by the source 4 of the constant reference voltage at idle. The differential voltage is amplified by amplifier 4 and is recorded by indicator 5.

7180 ¹ ₄ 7180 ¹ ₄

Устройство позволяет контролировать свойства железорудных материалов, связанные с его магнитной проницаемостью, например прочность незави₅ симо от формы и размеров образцов.The device allows you to control the properties of iron ore materials associated with its magnetic permeability, for example, the strength is independent of ₅ simo from the shape and size of the samples.

Claims

The invention relates to non-destructive testing and can be used to measure the strength of iron ore materials, preferably orange. A device for nondestructive testing of iron ore materials is known, which contains an electromagnetic transducer included in an oscillating circuit of a harmonic current generator connected in series with a generator, a conversion unit and an indicator D. The disadvantage of this device lies in the low reliability of control, which is associated with the dependence of the measurement results on the variation in the size and shape of samples of iron ore materials, for example, it is low. The closest in technical essence to the invention is a device for non-destructive testing of iron ore materials, containing a parametric electromagnetic converter, a series-connected generator, the oscillating circuit of which includes an electromagnetic parametric converter, a conversion unit including measuring and compensation channels and an indicator P} However, this device does not suppress the effect of variation, size and shape of iron ore samples on p results of control. The purpose of the invention is to increase the reliability of the control. This goal is achieved due to the fact that the generator is complete relaxahdaionny, and the conversion unit is designed as a two-input integrating amplifier. The drawing shows a block diagram of the device. The device for non-destructive testing of iron ore materials contains an electromagnetic converter 3 1, made in the form of a hollow cylinder from a non-magnetic material, on which an inductor (not shown) is wound, and generator 2. The generator 2 is made in the form of a relaxation generator, converter 1 and connected to the measuring input of a two-input integrating amplifier 3 connected by a second compensation input to a source 4 of a constant reference voltage And with the output with the indicator The device works as follows. The generator 2 produces square-shaped pulses, the duration of which depends on the inductance of the coil of the electromagnetic transducer 1, which is determined by the magnetic properties of the sample of iron ore material interacting with it. At the same time, the pulse duration is much less dependent on the shape and size of the samples. The pulses produced by the generator 2 are fed to the measuring input of the two-input integrating amplifier 3, compensated by the source 4 of the constant reference voltage at Idle. The differential voltage is amplified by an amplifier 4 and recorded with a 5 o indicator. The device allows you to control the properties of iron ore materials related to its magnetic permeability, such as strength, regardless of the shape and size of the samples. Claims An apparatus for non-destructive testing of iron ore materials, comprising a parametric electromagnetic converter, a series-connected generator, in an oscillating circuit of which an electromagnetic parametric converter is included, a conversion unit including measuring and compensation channels, and an indicator that is designed to increase reliability control, the generator is made relaxation, and the conversion unit is designed as a two-input integrating device numerator. Sources of information taken into account in the examination 1. Patent CltlA No. 3994157,. cl. G 01 N 3/16, 1976. 2. Devices for non-permissive control of materials and products. Handbook ed. V.V. Klyuev, Vol.

2., M., Mechanical Engineering, 1976, p. 130 (prototype).