Monitoring device and monitoring method for ultralow emission smoke

A technology for monitoring devices and dust, which is applied in the direction of measuring devices, scattering characteristic measurements, instruments, etc., can solve the problems of inability to obtain particle size distribution, large error of ultra-low emission of smoke and dust, etc., and achieve the effect of reducing the lower limit of measurement and improving the measurement accuracy

Pending Publication Date: 2017-01-11
UNIV OF SHANGHAI FOR SCI & TECH
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Problems solved by technology

[0005] However, for ultra-low emission dust, the influence of particle size on angular scattering light intensity cannot be ignored. Therefore, the current traditional angular scatterin

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  • Monitoring device and monitoring method for ultralow emission smoke
  • Monitoring device and monitoring method for ultralow emission smoke
  • Monitoring device and monitoring method for ultralow emission smoke

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[0026] The specific embodiments of the present invention are detailed below with reference to the drawings.

[0027] figure 1 It is a schematic structural diagram of an ultra-low emission smoke and dust monitoring device according to an embodiment of the present invention.

[0028] The ultra-low emission smoke and dust monitoring device 100 is arranged near the emission smoke and dust measurement area 30 and includes a multi-wavelength laser light source unit 10 and a multi-angle photoelectric detection unit 20. The multi-wavelength laser light source unit 10 is used to provide a measurement light source and illuminate the measurement area, and the multi-angle photodetection unit 20 is used to detect laser scattered light signals from multiple angles.

[0029] The multi-wavelength laser light source unit 10 includes a plurality of lasers, a multi-wavelength fiber coupler 102, and a collimator 101, which are connected by optical fibers.

[0030] Laser 1 (103), laser 2 (104)...Laser n ...

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Abstract

The invention provides a monitoring device and a monitoring method for ultralow emission smoke. The monitoring device is used for monitoring particle size distribution and concentration of smoke in a smoke measuring area. The monitoring device comprises a multi-wavelength laser light source part and a multi-angle photoelectric detection part, wherein the multi-wavelength laser light source part comprises a plurality of laser devices, a coupler and a collimator; the laser devices are used for emitting the laser light in different wavelengths; the coupler is used for coupling the laser light in different wavelengths; the collimator is used for collimating the laser light after being coupled and acquiring the multi-wavelength laser light used for irradiating the smoke measuring area; the multi-angle photoelectric detection part comprises a plurality of photoelectric detectors, a signal modulator and a signal processor; the photoelectric detectors are respectively arranged at certain angles with the collimator and are used for distinguishing the strength of laser light with different wavelengths, receiving the multi-wavelength laser light after smoke particle scattering and converting into an electric signal; the signal modulator is used for receiving the electric signal and modulating; the signal processor is used for processing the electric signal after being modulated, so as to acquire the particle size and concentration of the smoke.

Description

technical field [0001] The invention belongs to the field of dust particle size and concentration testing, and in particular relates to an ultra-low emission dust monitoring method and device based on the principle of multi-wavelength and multi-angle laser angle scattering. Background technique [0002] The particle concentration of soot is one of the important parameters to characterize the emission of soot pollutants. At present, the weighing method is the general detection method for particle pollutants in the world. Due to the need for online measurement, real-time sampling smoke concentration analysis methods such as continuous weighing method and β-ray method, and online concentration analysis methods such as charge method and light scattering method have been formed. . [0003] However, with the improvement of environmental protection requirements and the progress of dust removal technology, the concentration and particle size of ultra-low emission smoke and dust hav...

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Application Information

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IPC IPC(8): G01N15/02G01N15/06G01N21/53
CPCG01N15/0211G01N15/06G01N21/53
Inventor 杨斌于天泽蔡小舒平力王占平
Owner UNIV OF SHANGHAI FOR SCI & TECH
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