Real-time online measurement device for temperature and sulfur dioxide gas concentration
A sulfur dioxide and gas concentration technology, which is applied in the field of ultraviolet absorption spectroscopy and gas temperature sensing devices, can solve the problems of being easily affected by the environment, strong corrosion, etc., and achieve multiple functions, accurate concentration measurement results, and compact measurement systems Effect
Inactive Publication Date: 2020-08-18
TIANJIN UNIV
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Problems solved by technology
Thermocouple is the most commonly used measurement method. However, as an intrusive measurement, it is very susceptible to the influence of the environment, especially sulfur dioxide has a strong adsorption, and it will be highly corrosive when it meets water and turns into sulfuric acid.
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Embodiment 1
[0034] The ultraviolet light source covers the wavelength range of 200-400nm in the ultraviolet spectrum. After the ultraviolet light passes through the quartz lens, it becomes parallel light and is irradiated into the sample cell by one end of the sample cell. The sample cell is filled with sulfur dioxide gas of unknown concentration and temperature. The ultraviolet light is absorbed by sulfur dioxide in the sample cell. After absorption, it is emitted from the other end of the sample cell, and the emitted light is focused into the spectrometer by the quartz lens, and the spectral information collected by the spectrometer is transmitted to the computer by the USB data line of the spectrometer. The spectral signal contains temperature and sulfur dioxide concentration information. Perform real-time data processing on spectral signals through pre-programmed processing programs.
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The invention discloses a real-time online measurement device for temperature and sulfur dioxide gas concentration, which comprises: a deuterium lamp for generating ultraviolet light; a quartz lens which is used for converting ultraviolet light emitted by the deuterium lamp into ultraviolet parallel light after passing through the quartz lens; a detected area which is provided with sulfur dioxidegas, wherein the sulfur dioxide gas is used for absorbing ultraviolet light emitted by the quartz lens; a focusing quartz lens which is used for focusing the ultraviolet light emitted from the measured area; a spectrograph which is used for focusing the ultraviolet light emitted by the focusing quartz lens into the spectrograph, wherein the spectrograph collects spectral data and inputs the data into the computer; and a computer which is used for analyzing the characteristics of the sulfur dioxide absorption spectrum and giving temperature and concentration information of the sulfur dioxide gas in real time. By adopting the device, the temperature measurement function is realized under the condition that the cost is not changed, so that the functions of the measurement system are diversified.
Description
technical field [0001] The invention relates to an ultraviolet absorption spectrum and gas temperature sensing device, in particular to a real-time on-line measuring device for temperature and sulfur dioxide gas concentration. Background technique [0002] At present, sulfur dioxide measurement methods mainly include chemical methods and optical methods. The chemical method is a single-point measurement, which usually needs to take a sample and give the measurement result through the change of the chemical reaction. The measurement accuracy is high, such as: applicant: Li Hui, application number: CN201020292418.1, application date: 2010.08.06 Chinese patent disclosure Intelligent high-stable sulfur dioxide online monitor, application number: CN201510018174.5, application date: 2015.01.14, applicant: Chengdu Hailan Tiancheng Technology Co., Ltd. A Chinese patent discloses a sulfur dioxide online monitoring method, but this invasive The measurement method is susceptible to su...
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IPC IPC(8): G01D21/02
CPCG01D21/02
Inventor 高强李博李中山
Owner TIANJIN UNIV
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