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Multi-spectral radiation temperature measuring system and multi-spectral radiation temperature measuring method

A radiation temperature measurement and multi-spectral technology, applied in the field of optical measurement and sensing, can solve the problems of complex data processing process, achieve the effect of simple and reliable principle, overcome model errors, and meet the requirements of time response

Active Publication Date: 2014-03-19
NORTHWEST INST OF NUCLEAR TECH
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Problems solved by technology

However, this method is based on the ε empirical model, which is easily limited by different flame parameters and has a large uncertainty. In addition, the data processing process is relatively complicated.

Method used

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  • Multi-spectral radiation temperature measuring system and multi-spectral radiation temperature measuring method

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Embodiment Construction

[0042] like figure 1 As shown, the measurement device of the present invention includes a pulse wide spectrum light source 1 and an incident collimating lens group 3, an outgoing collimating lens group 5 and a spectrometer 6 on the pulse wide spectrum light source exit light path, and the flame 4 to be measured is arranged on the incident collimating lens group. Between the lens group 3 and the outgoing collimating lens group 5, the outgoing light of the pulse wide-spectrum light source 1 is collimated by the incident collimating lens group 3, passes through the area to be measured of the flame 4, and passes through the outgoing collimating lens group 5 for coupling into a spectrometer 6 for multispectral radiation temperature measurement.

[0043] The spectrometer 6 can be a spatial optical interface, and can also adopt such as figure 2 In the shown fiber optic spectrometer, one end of the fiber is connected to the exit of the outgoing collimating lens group 5, and the othe...

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Abstract

The invention discloses a multi-spectral radiation temperature measuring system and a multi-spectral radiation temperature measuring method. The multi-spectral radiation temperature measuring system comprises a wide-spectrum light source, and an incident collimating lens group, an emergent collimating lens group and a spectrograph which are sequentially arranged on an emergent light path of the wide-spectrum light source. A to-be-measured flame is arranged between the incident collimating lens group and the emergent collimating lens group. According to the multi-spectral radiation temperature measuring system, an emissivity coefficient self-calibration system is arranged on the same path as the measured flame. Flame emissivity coefficients under different wavelengths are obtained by recording spectral parameters of the wide-spectrum light source, the flame and the wide-spectrum light source plus the flame. The method is used for correcting parameters of the multi-spectral radiation temperature measuring system, overcomes model error in traditional theory calculation correction and improves the measurement uncertainty.

Description

technical field [0001] The invention relates to the field of optical measurement and sensing, and in particular provides a multispectral radiation temperature measurement device and method for combustion flow field. Background technique [0002] In the study of detonation field and combustion field, temperature is an important state parameter of combustion reaction. By using this parameter, we can better understand the change of thermal energy in the process of detonation and combustion, as well as the form of radiation, convection and heat conduction in the combustion process. heat transfer process. Flame temperature distribution measurement usually has contact method and non-contact method, and the non-contact method is widely used because it introduces less interference to the flame field. [0003] In the non-contact method of temperature parameter measurement, the temperature measurement method based on the principle of spectral radiation is a commonly used method. The ...

Claims

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Application Information

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IPC IPC(8): G01J5/00G01J5/08
Inventor 陈绍武张磊陶蒙蒙赵新艳杨鹏翎张振荣胡志云叶景峰冯国斌
Owner NORTHWEST INST OF NUCLEAR TECH
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