Optical cavity for liquid transmission spectroscopy with constant temperature function
A transmission spectrum, optical cavity technology, applied in the field of optical cavity, can solve problems such as hindering research progress, and achieve the effect of simple operation, avoiding phase shift, and wide source of materials
Inactive Publication Date: 2016-11-30
NORTHEAST GASOLINEEUM UNIV
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Problems solved by technology
In the process of experimental research, temperature has a great influence on the measurement of the transmission spectrum of the sample, and most of the existing spectrometers have no equipment to adjust the temperature, so the spectral measurement of the sample can only be carried out at room temperature, which is extremely difficult. This greatly hinders the progress of research, especially liquid hydrocarbon fuels are greatly affected by temperature, and its application process involves high-temperature environments. Therefore, it is urgent to invent an optical cavity for liquid transmission spectroscopy with a temperature-controllable function.
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[0015] The present invention will be further described below in conjunction with accompanying drawing:
[0016] Depend on Figure 1 to Figure 3 As shown, this kind of optical cavity with constant temperature function for liquid transmission spectrum testing has a box shell 1, which is unique in that: the box shell 1 is built with a first junction box 2, a thermal insulation box 33 and a second The junction box 3, the first junction box, the thermal insulation box and the second junction box are closely fitted in the box shell from left to right;
[0017] Wherein, the thermal insulation box is divided into left and right two cavities by the middle partition, and a U-shaped optical path fixing groove 5 made of a heat-conducting material is fixed horizontally through the center of the thermal insulation box. On the thermal insulation box, there is a left optical window 6 corresponding to the left end of the optical path fixing groove, and on the thermal insulation box, a right o...
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The invention mainly aims at providing a liquid transmission spectrum test optical chamber with the function of keeping a constant temperature. The optical chamber is characterized in that the optical chamber comprises an equipment main body, a measure part, a temperature-adjusting part and a path part for introduction, discharge and flowing of nitrogen. The direct heat source is an electric heating pipe, after an external power source is supplied, circulating nitrogen and heat-conducting cement in the electric heating pipe device are used to control the internal temperature, a temperature required by an experiment is set on a temperature controller, and a temperature-adjusting box is used to control the heating degree of the electric heating pipe, so that the purpose of precisely controlling the experiment temperature in the device is realized. An optical path fixing groove can holds colorimetric wares with different optical distances so as to improve the comparability of experiment measurement data. The optical chamber possesses the advantages of being simple to run, convenient to install, wide in material source and the like.
Description
technical field [0001] The invention relates to an optical cavity used in the technical field of optical testing to measure liquid transmission spectrum under variable temperature or constant temperature environment. Background technique [0002] In recent years, the measurement of liquid transmission spectrum has received extensive attention. The transmittance of liquid samples can be directly obtained through transmission spectroscopy, and other spectral property parameters of the sample can also be obtained by inversion based on it. At this stage, this method can be used to invert more sewage indicators through the transmission spectrum of sewage samples, such as chemical oxygen demand COD, total organic carbon TOC, content of heavy metal elements such as iron and copper, etc., and can also measure important optical properties of liquid hydrocarbon fuels. Parameters, such as attenuation coefficient, refractive index, etc. In addition, transmission spectrum inversion meas...
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IPC IPC(8): G01N21/03G01N1/44
Inventor 李栋周英明徐晓丽齐晗兵吴国忠曹富达
Owner NORTHEAST GASOLINEEUM UNIV