Detection device and method for three-dimensional temperature field in combustion chamber of single-CCD imaging system

Abstract

The invention relates to a detection device for a three-dimensional temperature field in a combustion chamber of a single-CCD imaging system. The detection device comprises a high-temperature and high-pressure resistant water cooling jacket, an endoscope, a color industrial plane array CCD camera and a data acquisition and analysis unit, wherein the water cooling jacket is used for forming an embedded type protective housing in equipment, the light path of the endoscope is cooled through a water coil and the blowing of an inert gas, and a pressure resistant lens at the front end the jacket is protected so as to maintain the normal operation of the endoscope; the endoscope is used for leading radiating images out of a high-temperature and high-pressure furnace through the light path; the color industrial plane array CCD camera is used for imaging the radiating images of visible light wave band; and the data acquisition and analysis unit is used for acquiring the radiating images of different focal planes and measuring the three-dimensional temperature field by an optical stratified imaging method and a colorimetric temperature measurement method. The invention also relates to a detection method for the three-dimensional temperature field. Due to the adoption of the technical scheme, the three-dimensional temperature field detection on the baisi of the single-CCD camera can be realized, the technical scheme is realized simply, and the device and the method can be applied to harsh environments, such as high temperature, high pressure and the like, and are easy to popularize in the industrial production field.

Description

technical field [0001] The invention relates to a three-dimensional temperature field detection device and method in a furnace with a single CCD imaging system Background technique [0002] Coal gasification technology is the basis for the development of process industries such as coal-based chemicals, coal-based liquid fuels, advanced IGCC power generation, polygeneration systems, hydrogen production, and fuel cells. It is a common technology, key technology, and leading technology in these industries. Entrained bed coal gasification technology adopts gasification temperature of 1300°C to 1700°C and liquid slag discharge, so that the gasification process is controlled by chemical reaction at about 900°C (fixed bed), and chemical reaction and transfer at about 1100°C (fluidized bed) bed) jumps to pass control. The entrained bed gasification furnace operates under high temperature and high pressure, and there may be abnormal working conditions, which make the temperature fie...

AI Technical Summary

Problems solved by technology

[0003] The high temperature and high pressure working conditions of industrial gasifiers make it very difficult to monitor the internal flame shape, real-time temperature field and the working status of refractory bricks

Compared with the combustion furnace, the higher furnace pressure greatly limits the number of image acquisition ports in the gasification furnace, and the three-dimensional temperature field monitoring based on multiple perspectives is extremely difficult to achieve

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