A device and method for measuring the temperature distribution of an electric explosion using a dual-wavelength laser
A dual-wavelength laser and temperature distribution technology, which is applied to measuring devices, thermometers, and heat measurement, can solve the problems of not being able to measure the change of temperature with space, not being able to accurately locate the temperature, and not being able to measure the temperature distribution with high temporal and spatial resolution.
Active Publication Date: 2022-06-07
XIDIAN UNIV
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Problems solved by technology
Optical radiation pyrometers can currently be used to measure the temperature of explosive bodies, but this does not allow high temporal and spatial resolution measurements of the temperature distribution
In terms of space, only the overall temperature or average temperature of the explosive body can be measured, and the change of temperature with space cannot be measured; in terms of time, it is also impossible to accurately locate and measure the temperature at what time, only the average temperature during the explosion process can be measured. temperature
This is far from enough for the study of the electric explosion process
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[0022] like figure 1 As shown in the figure, a device for measuring the temperature distribution of electric explosion using dual-wavelength laser is characterized in that, it at least comprises: a first laser 1, a second laser 2, a beam combiner 3, a first reflecting mirror 4, an optical beam expanding system 5 , beam convergence unit 6, beam splitter 7, second mirror 8, first filter 9, second filter 10, first optical array sensor 11, second optical array sensor 12, explosion signal acquisition module 13 and the control module 14; the first laser 1 and the second laser 2 send out laser beams with wavelengths of λ1 and λ2 respectively, and the laser beams with wavelengths of λ1 and λ2 enter the beam combiner 3 and the first reflecting mirror 4 incident optical surfaces respectively, and the wavelengths are The laser beam of λ2 is reflected to the reflection output surface of the beam combiner 3 through the first reflection mirror 4; the laser beam of wavelength λ1 is refracted...
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The present invention relates to rapid temperature distribution measurement technology, in particular to a device and method for measuring the temperature distribution of an electric explosion using a dual-wavelength laser, which is characterized in that it at least includes: a first laser, a second laser, a beam combining mirror, and a first reflecting mirror , optical beam expander system, beam converging unit, beam splitter, second mirror, first filter, second filter, first optical array sensor, second optical array sensor, explosion signal acquisition module and control module ; The first laser and the second laser respectively emit laser beams with wavelengths λ1 and λ2. It provides a device and method for measuring the temperature distribution of electric explosion with dual-wavelength lasers in order to solve the problem of rapid change in time and space of temperature distribution in the process of electric explosion of metal wire, and to realize high time and space resolution measurement of temperature. .
Description
technical field [0001] The invention relates to a rapid temperature distribution measurement technology, in particular to a device and a method for measuring the temperature distribution of an electric explosion by using a dual-wavelength laser. Background technique [0002] When a pulsed high current passes through the metal wire, a large amount of energy is instantly deposited in the metal wire due to the ohmic heating mechanism, and the metal wire undergoes a phase change and expands rapidly, accompanied by phenomena such as luminescence and explosion sound. This complex physical process is called metallization. Wire explosion. Wire electric explosion has a wide range of applications in Z-pinch plasma, X-pinch X-ray source, nano-powder preparation, electric explosion switch, fossil energy development, geophysical exploration and other fields. [0003] The wire electric explosion process is accompanied by complex physical and chemical changes. As the explosion process pr...
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IPC IPC(8): G01K11/00
CPCG01K11/00
Inventor 王石语连天虹邱少君尚佩瑾李锦诱蔡德芳
Owner XIDIAN UNIV