SU1376005A1 - Particle analyser - Google Patents

Abstract

The invention relates to analytical instrumentation, in particular to devices controlling the dispersion of two-phase flows. The purpose of the invention is to increase the information content by determining the dispersion in pulsed periodic two-phase flows. A pulsed laser is used as a radiation source and an adjustable synchronization system, which binds laser pulses to a specific time phase of a pulsed periodic two-phase flow. Particle analyzer allows you to explore the dynamics of the process of spraying diesel injectors. 1 il. f С /; with

Description

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The invention relates to analytical instrumentation, in particular to devices for monitoring the dispersion of two-phase systems.

The aim of the invention is to increase the information content by determining the dispersion in pulsed periodic two-phase flows,

The drawing shows a functional analyzer circuit.

The analyzer contains a pulsed laser 1, a collimator 2, a working chamber with a two-phase medium 3 under study, a focusing system 4, a recording device 5 located in the focal plane of the focusing system 5, a pulse sensor 6 whose output through line 7 of a constant delay is connected to the input line 8 of the controlled delay, one output line 8 of the adjustable delay is connected to the input of the display unit 11, the second to the input of the temporary dissector 9, one output of which is connected to the control input pulse through the matching block 10 of the laser 1 and the other - to the control input of the variable delay line 8.

Particle analyzer works as follows

shimm way.

I. The launch of the analyzer is carried out simultaneously with the start of flow. the process under study. The light pulse of laser 1 through the collimator 2 enters the working chamber 3. The diffuse light field is collected by a focusing system 4, in the focal plane of which the recording device 5 is located. The signal from the pulsed sensors 6, corresponding to the appearance of a pulsed two-phase flow in the working chamber 3 enters a constant delay line 7, which

gives the operator the opportunity to prepare

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about

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install recording equipment. An adjustable delay line 8 synchronizes the development phase of the two-phase flow under investigation with the laser output. The temporal dissector 9 provides framing of the further process. The matching unit 10 triggers the pulsed laser pumping lamp. The display unit 11 registers the time interval between the laser flash and the start of the process development.

The analyzer allows one to study the dispersion in pulsed periodic two-phase flows in any time phase of its development, which allows one to study, for example, the process of spraying of fuel from diesel injectors.

Claims (1)

Invention Formula A particle analyzer containing sequentially located coherent radiation source, a collimator, a working chamber with the medium under investigation, a focusing system, in the focal plane of which a recording element is located, which, in order to increase the information content by determining the dispersion in pulsed periodic two-phase flows, it is connected in series with a pulse sensor, a constant delay line, an adjustable delay line, a time dissector, a matching unit, an output cat cerned is connected to a control input of a pulsed laser, direct ispoLzue- as a source of coherent radiation, and a display unit, wherein the second output is connected to the temporary dissector, a control input of the variable delay line, the second output of which is connected to the input of the indication unit. / ь l one 9 -