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Laser back scattering dust-measuring apparatus probe device

A backscattering and dust measurement technology, used in measurement devices, measurement of scattering properties, analysis of suspensions and porous materials, etc. problem, to achieve the effect of large range of soot particles, good temperature control effect and reliable principle

Active Publication Date: 2008-10-22
SINOGREEN ENVIRONMENTAL PROTECTION SCI & TECH
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Problems solved by technology

However, the existing scattered light particle concentration detection device, on the one hand, has a large volume, which is not conducive to on-site installation. On the other hand, the laser light source is also greatly affected by the ambient temperature and controlled current in the field, resulting in signal drift. At the same time, the calibration device is complicated. And the compensation and correction of the signal cannot achieve continuous tracking, and the correlation to the particle concentration is not good

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  • Laser back scattering dust-measuring apparatus probe device
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  • Laser back scattering dust-measuring apparatus probe device

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Embodiment Construction

[0016] Fig. 1 is the principle structural diagram of the probe device of the laser backscatter dust measuring equipment of the present invention, the probe device of the laser backscatter dust measuring equipment mainly includes: protective glass 2, receiving lens 4, photosensitive cell 13, laser 20, all The laser 20 is located on the upper left side of the probe device, and is arranged obliquely downward; the photosensitive cell 13 is located at the level below the same side of the laser; the protective glass 2 is located on the right side of the probe device, slightly lower than the laser 20 position, and maintain a non-parallel state with the longitudinal direction; the receiving lens 4 is located on the right side of the probe device, and is arranged in the coaxial direction with the photosensitive cell 13; the protective glass 2 on the right side, the receiving lens 4 and the left side A light blocking device 21 is arranged between the photosensitive cells 13 , and the lig...

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Abstract

The invention discloses a probe device of a laser backscatter dust measuring device, belonging to the technical field of a device for measuring the density of gaseous emissions with laser backscatter. A problem to be solved is to provide the probe device of the laser backscatter dust measuring device. The device is the probe device which uses a laser backscatter measuring principle for online continuously measuring the density of dust particles in stack gas through the measuring device. The adopted proposal is as follows: in the probe device of the laser backscatter dust measuring device, a light barrier device is arranged between protective glass and a receiving lens on the right side of the probe device and a photosensitive cell on the left side of the probe device, and can selectively reflect reference light of a laser through the protective glass or refract returned signal light through the receiving lens. The probe device can be widely applied to various dust measuring technologies.

Description

technical field [0001] The probe device of the laser backscatter dust measuring equipment of the present invention specifically relates to a probe device for online continuous measurement of the concentration of soot particles in the flue gas of industrial boilers, power plant boilers and industrial kilns by using the principle of laser backscattering measurement The device belongs to the technical field of devices for measuring the concentration of gas emissions by laser backscattering. Background technique [0002] At present, the on-line continuous automatic monitoring of the concentration of soot particles in the flue gas emitted by industrial pollution sources at home and abroad mostly adopts the optical opacity method. The principle is to inject a beam of light into the flue. Due to the absorption and scattering of particles, the intensity of light Attenuation, the light intensity of the light beam is weakened after passing through the smoke. When the combustion medium...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/06G01N21/53
Inventor 白惠峰徐宗照闫兴钰白惠宾王红梅
Owner SINOGREEN ENVIRONMENTAL PROTECTION SCI & TECH
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