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Device and method for measuring concentration of high-pressure combustion carbon black particles

A technology of particle concentration and measuring device, which is applied in the fields of measuring device, particle suspension analysis, suspension and porous material analysis, etc. problems, to achieve the effect of convenient and fast measurement, easy control, and simple data acquisition and processing process

Inactive Publication Date: 2012-01-04
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In recent years, a method of measuring particle concentration with dual wavelengths based on the light scattering method has been proposed. This method uses a laser to emit laser light with different wavelengths. The laser light emitted by the laser passes through the sample placed on the sample stage, and is measured by the measured light intensity data. Particle concentration, but this method laser can only measure the particle concentration in a single environment, and the particle state is unstable during the combustion process, which is easily disturbed and affects the accuracy of the measurement results, and the method is complicated and prone to errors
At present, no one has proposed relevant research reports on the measurement of particle concentration in high-pressure combustion

Method used

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  • Device and method for measuring concentration of high-pressure combustion carbon black particles
  • Device and method for measuring concentration of high-pressure combustion carbon black particles
  • Device and method for measuring concentration of high-pressure combustion carbon black particles

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Embodiment 1

[0046] Such as figure 1 As shown, the high-pressure combustion carbon black particle concentration measuring device of the present invention includes a laser 1, a first attenuator 3, a beam expander collimating mirror 4, a first polarizer 7, a high-pressure sample chamber 8, a second polarizer 9, and a focusing lens 10. A first optical filter 11 , a linear array CCD image sensor 13 and a computer 19 . For the convenience of description, the exit end of the laser light emitted by the laser 1 is defined as the front. The present invention will be further described below by taking the measurement of the concentration of burning carbon black particles as an example.

[0047] The laser 1 is the light source of the device for measuring the concentration of high-pressure combustion carbon black particles of the present invention. The laser 1 in this embodiment adopts a tunable laser that can emit laser light of different wavelengths. Behind the laser 1 in the direction of the horiz...

Embodiment 2

[0068] Such as image 3 As shown, as a more preferred solution, the high-pressure combustion carbon black particle concentration measuring device of the present embodiment includes a laser 1, a first aperture 2, a first attenuator 3, a beam expander collimating mirror 4, a second aperture 5, Beam splitter 6, first polarizer 7, high-voltage sample chamber 8, second polarizer 9, focusing lens 10, first filter 11, third aperture 12, linear array CCD image sensor 13, fourth aperture 14 , total mirror 15, second attenuator 16, second filter 17, fifth diaphragm 18 and computer 19.

[0069] Behind the laser 1 in the direction of the horizontal optical axis of the outgoing laser light, a first aperture 2, a first attenuator 3, a beam expander collimator 4, a second aperture 5, a beam splitter 6, a first polarizer 7 and In the high-voltage sample chamber 8, the wavelength of the beam splitter 6 arranged behind the second aperture 5 corresponds to the wavelength of the light emitted by...

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Abstract

The invention discloses a device and a method for measuring the concentration of high-pressure combustion carbon black particles. The device for measuring the concentration of the high-pressure combustion carbon black particles comprises a laser, a first attenuator, a light path collimation component, a first polaroid, a high-pressure sample chamber, a second polaroid, a focusing lens, a first optical filter, a linear array charge coupled device (CCD) image sensor and a computer. In the method, lasers with different wavelengths are successively emitted by the laser and pass through the high-pressure sample chamber, and the concentration of particles to be measured is obtained by measuring the light intensity of transmission light which passes through the high-pressure sample chamber and light which is taken as a reference light path and does not pass through the high-pressure sample chamber according to a Mie scattering theory. By the method, the concentration can be measured conveniently and quickly; the method has low requirements on instruments and equipment, the process of data acquisition and processing is simple, and the measurement range is relatively wider; moreover, measurement results are accurate, and the method is high in speed and repeatability, and can be popularized and applied in the field of particle measurement.

Description

technical field [0001] The invention relates to the technical field of particle concentration measurement, in particular to a measuring device and a measuring method for measuring the concentration of burning carbon black particles under high pressure conditions. Background technique [0002] Combustion is widely used in energy production, thermal power generation, home heating, transportation, aviation propulsion, and material processing. At the same time, the development of aerospace vehicles and various high-performance, low-pollution, high-intensity, and small-sized combustion devices has put forward higher and higher requirements for the study of combustion processes. The instability of the combustion state will lead to a decrease in the thermal efficiency of the combustion chamber and an increase in pollutants. In extreme cases, it may also cause fire extinguishing, or even induce an explosion in the combustion chamber, resulting in an accident. Therefore, the combus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/06
Inventor 韩一平赵文娟张阳陈庭将徐强马红玉
Owner XIDIAN UNIV
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