Optical-fiber endoscopic coal combustion ultralow emission fly ash concentration measuring device

Abstract

The invention discloses an optical-fiber endoscopic coal combustion ultralow emission fly ash concentration measuring device, which is characterized by comprises an image acquisition part, an image processing part and an anti-dust device. The image acquisition part comprises a combined shooting unit (1), a transmission fiber optic bundle (3), a metal sleeve (4), an endoscope ocular lens (6), a coupling part (7) and a high-speed camera (8). The transmission fiber optic bundle (3) is arranged in the metal sleeve (4) with a hollow structure, and is respectively connected to the combined shooting unit (1) and the endoscope ocular lens (6). The endoscope ocular lens (6) is connected to the high-speed camera (8) through the coupling part (7). The image processing part comprises an optical cable (9), an acquisition card (10) and a computer (11). By integrating a high-speed shooting technology, an optical-fiber endoscopic technology, a microtechnique and an image processing technology, on-line measurement of concentration of ultralow-concentration fine particles in a stationary pollution source exhaust gas from a coal-fired power plant can be realized.

Description

technical field [0001] The invention relates to a device for measuring the concentration of dust-laden flue gas, in particular to a device for measuring the concentration of ultra-low emission smoke from a fiber-optic microendoscopic coal-burning source, belonging to the field of multiphase flow measurement. Background technique [0002] In recent years, many parts of the country have been shrouded in smog, and the emission of fine particulate PM2.5 such as sulfur dioxide, hydroxide and volatile organic compounds has increased significantly. Coal-fired power plants, one of the main sources of PM2.5 emissions, need to understand their emissions It is necessary to effectively control the haze from the source by detecting and controlling the concentration of fine particles in the ultra-low concentration exhaust gas. However, when traditional photoelectric scattering or transmission-based soot online measurement equipment is used for online monitoring of ultra-low emission soot ...

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Problems solved by technology

[0004] Technical issues: In the field of soot concentration measurement for ultra-low emissions from coal-fired power plants, there are problems with traditional on-line measurement equipment for soot concentration based on photoelectric scattering or transmission, that is, the accuracy or stability of the measurement results is affected by the particle size of the measured particles. The problem that factors such as size, particle size distribution and flue gas humidity are greatly affected

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