Scanning type nozzle atomizing field for drop grain size and concentration space distribution analyzer

A technology of droplet size and spatial distribution, which is used in particle size analysis, particle and sedimentation analysis, and material analysis. problems such as large errors, to achieve the effect of short experimental measurement cycle, easy automation, and large sampling area

Inactive Publication Date: 2005-03-02
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

The shortcomings of this instrument are mainly reflected in: small measurement area, high spatial resolution, but also sacrifices the representativeness of the measurement data, the error is large when the measurement data is used to calculate the concentration; for the measurement of non-spherical particles As a result, it is difficult to give a reasonable particle size explanation, and the measurement error of non-spherical particles is relatively large; PDA is a point measurement technology, and the measurement period to complete a spray field is relatively long

Method used

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  • Scanning type nozzle atomizing field for drop grain size and concentration space distribution analyzer
  • Scanning type nozzle atomizing field for drop grain size and concentration space distribution analyzer
  • Scanning type nozzle atomizing field for drop grain size and concentration space distribution analyzer

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Embodiment Construction

[0018] Such as figure 1 , figure 2 , image 3 with Figure 4 As shown, the present invention includes: programmable control guide rail frame 1, particle size and concentration optical sensor 2, two fine-tuning supports 3, A / D converter 6, computer 7, particle size and concentration optical sensor 2 are separated The structure is composed of a transmitting end 4 and a receiving end 5, which are respectively arranged on two fine-tuning supports 3, and the two fine-tuning supports 3 are respectively fixed on the programmable control rail frame 1, and the transmitting end 4 and the receiving end 5 collect The photoelectric signal of the A / D converter is connected to the input end of the A / D converter 6 through the wire, and the digital signal output by the A / D converter is transmitted to the computer 7 through the wire.

[0019] The programmable control rail frame 1 has a U-shaped cantilever beam 8, and the front end of the U-shaped cantilever beam 2 is respectively provided w...

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Abstract

A diameter and density distribution analyzer of scanning nozzle atomizing fog drop is used in measuring instrument technical field, comprising programmable guide rail support, two microadjustment bearer, particle diameter and density optical sensor, A/D converter and computer. The particle diameter and density optical sensor is of isolating construction and consisted of transmitting terminal and receiving end which are installed on microadjustment bearer fixed on programmable guide rail support, electro optical signal 10 collected by transmitting terminal and receiving end is transferred to receiving end of A/D converter from which digital signal is transferred to computer. The invention is mainly used in atomizing field research of various nozzles, without special requirement to work medium of atomizing field, and it can even be used to measure special distribution of solid state particle diameter and density in jet stream with gas and solid two states, its has large sampling area, small measurement error of density, its measuring course is easy to be automation and experimental measurement period is short.

Description

technical field [0001] The invention relates to an analyzer for the spatial distribution of droplet size and concentration, in particular to an analyzer for the spatial distribution of droplet size and concentration in the atomization field of a scanning nozzle. Used in the technical field of measuring instruments. Background technique [0002] Nozzles are widely used in many industrial fields such as chemical industry, energy, and environmental protection. The sprayed droplet particles and concentration and their spatial distribution have a great influence on the performance of the nozzle. At the same time, the physical process of spraying is very complicated. At this stage, it is still difficult to accurately solve the particle and concentration in the droplet field and its spatial distribution by purely relying on theoretical methods. Experimental measurement is still one of the main means in this kind of research and application work. The spray process is a dynamic gas-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N9/00G01N15/02G01N21/53
Inventor 吴伟亮陈汉平马会民徐芬
Owner SHANGHAI JIAO TONG UNIV
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