System and method for measuring diffusion flame frontal surface three-dimensional structure of motion fire source

A technology for spreading flames and three-dimensional structures, which is applied in measuring devices, fluid velocity measurement, velocity/acceleration/impact measurement, etc. It can solve the problem of the inability to obtain the three-dimensional spatial geometric characteristics of the flame front, the inability of the ignition source point to move, the running speed, and the trajectory Poor followability and other problems, to achieve the effect of flexible and convenient operation, realization of visualization and real-time, stable parameters
CN102175178AInactive Publication Date: 2011-09-07SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2011-09-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a system and method for measuring a diffusion flame frontal surface three-dimensional structure of a motion fire source. The system comprises a laser, a sheet mirror side lens, a diffusion combustor, a synchronous controller, a voltage-stabilizing and illuminating unit, a controller, an image acquisition card, an image acquisition device, an optical system regulation device, an image optical system and a speed control system, wherein the imaging optical system comprises a right primary reflection lens, a right secondary reflection lens, a light screen, a plane lens, a collimation lens, a left secondary reflection lens and a left primary reflection lens. The method can be used for regulating motion speed of the combustor through a speed control system and regulating diffusion flame so as to obtain the diffusion flame frontal surface of a motion fire source under various motion speeds and combustion strengths. Due to the adoption of the invention, images of the left side and the right side of the flame frontal surface are obtained on a CCD imaging element through the imaging optical system, non-contact measurement can be realized, and a three-dimensional structure of the high-precision flame frontal surface can be obtained through image reconstruction.
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Description

technical field

[0001] The invention relates to the technical field of flame front measurement, in particular to a system and method for measuring the three-dimensional structure of a moving fire source diffusion flame front. Background technique

[0002] The fuel and oxidant are separated before combustion in the form of a flame called non-premixed flame (non-premixed flame). The non-premixed combustion flame is mainly carried out by mutual diffusion between fuel and oxidant, so it is also called diffusion flame. Diffusion flame is a more common form of flame in nature and practical applications, such as the flame of candles, the flame produced by direct combustion of solid fuels such as coal and wood, and the combustion of direct injection fuel in rocket engines, aircraft engines, gas turbines and diesel engines. All flames are diffuse flames. Among them, the fire caused by the direct combustion of liquid or solid fuel is the most common diffuse combustion in real life t...

Claims

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