SU243957A1 - METHOD FOR DETERMINING THE DIMENSIONS OF PARTICLES IN A FLOW - Google Patents

METHOD FOR DETERMINING THE DIMENSIONS OF PARTICLES IN A FLOW

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Publication number
SU243957A1
SU243957A1 SU1137896A SU1137896A SU243957A1 SU 243957 A1 SU243957 A1 SU 243957A1 SU 1137896 A SU1137896 A SU 1137896A SU 1137896 A SU1137896 A SU 1137896A SU 243957 A1 SU243957 A1 SU 243957A1
Authority
SU
USSR - Soviet Union
Prior art keywords
particles
determining
dimensions
flow
duration
Prior art date
Application number
SU1137896A
Other languages
Russian (ru)
Original Assignee
А. Г. Мединский , В. В. Листопадов Новочеркасский политехнический институт
Publication of SU243957A1 publication Critical patent/SU243957A1/en

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Description

Изобретение относитс  к способам определени  размеров частиц в потоке (например, в жидкости).The invention relates to methods for determining the size of particles in a stream (for example, in a liquid).

По известному способу анализируема  взвесь прокачиваетс  между электродами, включенными в цепь источника тока. При прохождении частицами межэлектродного промежутка возникает импульс тока, амплитуда которого с определенной степенью точности пропорциональна объему частиц и зависит от соотношени  электронроводностей электролита и частиц.In a known manner, the analyzed suspension is pumped between the electrodes connected to the current source circuit. When the particles pass through the interelectrode gap, a current pulse arises, the amplitude of which with a certain degree of accuracy is proportional to the volume of the particles and depends on the ratio of the electrolyte's electron conductivities and particles.

Предложенный способ отличаетс  от известного тем, что определ ют длительность импульсов тока, возникающих при прохождении частицами межэлектродного промежутка, образованного точечными электродами, и по длительности импульсов суд т о размерах частиц .The proposed method differs from the known one in that it determines the duration of the current pulses that occur when the particles pass through the interelectrode gap formed by point electrodes, and judging by the pulse duration, the particle sizes are measured.

На чертеже изображен один из вариантов предлагаемого устройства.The drawing shows one of the variants of the proposed device.

Датчик состоит из измерительной трубки 1, насоса 2, который создает циркул цию взвесиThe sensor consists of a measuring tube 1, a pump 2, which creates a suspension circulation

через трубку. В диаметрально противоположных точках трубки введены тонкие электроды 3 и 4 из платиновой проволоки. При црохождении частиц мимо электродов измен етс  сопротивление между ними, что вызывает импульс тока в их цепи. При посто нной скорости движени  частиц длительность импульса будет зависеть только от величины частиц. Анализ длительности электрических импульсов от частиц порции материала дает возможность определить ее гранулометрический и фракционный состав.through the tube. Thin electrodes 3 and 4 of platinum wire are inserted at diametrically opposite points of the tube. When particles pass past the electrodes, the resistance between them changes, which causes a current pulse in their circuit. At a constant particle velocity, the pulse duration will depend only on the size of the particles. Analysis of the duration of electrical impulses from particles of a portion of the material makes it possible to determine its particle size and fractional composition.

Предмет изобретени Subject invention

Способ определени  размеров частиц в потоке с помещением в исследуемую среду двух электродов, отличающийс  тем, что, с целью повышени  точности, определ ют длительность импульсов тока, возникающих при прохождеНИИ частицами межэлектродного промежутка, образованного точечными электродами, и по длительности этих импульсов -суд т о размерах частиц.The method of determining the size of particles in a stream with the placement of two electrodes into the medium under investigation, characterized in that, in order to increase the accuracy, the duration of current pulses arising during the passage of the NIR particles from the interelectrode gap formed by point electrodes and the duration of these pulses are determined. particle sizes.

SU1137896A METHOD FOR DETERMINING THE DIMENSIONS OF PARTICLES IN A FLOW SU243957A1 (en)

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SU243957A1 true SU243957A1 (en)

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