On-line X fluorescence analyzer light path system capable of being automatically adjusted

Abstract

The invention provides an on-line X fluorescence analyzer light path system capable of being automatically adjusted. According to the system, a crystal table and a crystal seat are arranged in a light splitting shell; the crystal seat is provided with a light splitting crystal and is connected with the crystal table through a shaft pin; the crystal holder can rotate, wherein the rotation angle of the crystal holder is adjusted by controlling worm and gear transmission through the motor; the rotation angle of the crystal holder is indirectly recorded through a multi-circle absolute value encoder, and the optimal rotation angle of the crystal holder is determined by processing the spectrum shape of counting rate-rotation angle. By controlling the motor, the light path is automatically adjusted, so that the effect of the whole light path is optimal, the situation that the analysis precision of an instrument is reduced due to the influence of adverse factors such as environment temperature change and vibration is avoided, the maintenance workload is reduced, and manual adjustment can be carried out without opening an instrument device.

Description

technical field [0001] The invention relates to the field of on-line analysis of industrial material components, in particular to an automatically adjustable on-line X fluorescence analyzer optical path system. Background technique [0002] X-ray fluorescence spectroscopy is a fast, non-destructive method of measuring matter. X-ray fluorescence is secondary X-rays excited when materials are bombarded with high-energy X-rays or gamma rays. This phenomenon is widely used in elemental analysis and chemical analysis, especially in the investigation and research of metals, glass, ceramics and building materials, geochemistry, forensic science, archaeology and artworks such as oil paintings and murals. [0003] X-ray fluorescence spectrometer, also known as XRF spectrometer, is divided into two types: dispersive type and non-dispersive type. The dispersion type is divided into wavelength dispersion type and energy dispersion type. The wavelength dispersive fluorescence spectrom...

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Problems solved by technology

Due to the precise structure of the spectroscopic system of the wavelength dispersion analyzer, it is currently suitable for laboratory analysis. However, if it is used for industrial online detection and analysis, due to the harsh conditions of some industrial production sites, such as large fluctuations in ambient temperature and continuous Vibration or large amplitude, etc., have seriously affected the application effect of the wavelength dispersion analyzer in the industrial field

[0006] In particular, after the wavelength dispersion analyzer has been operated in the industrial field for a period of time, with the influence of temperature changes and vibrations, the reflective focusing state of the spectroscopic crystal on the X-fluorescence will change, which will reduce the effective X-fluorescence intensity received by the detector and affect the analysis. precision

The current maintenance method for this kind of phenomenon is that the staff disassemble the analyzer and use manual adjustments, and the site is subject to unfavorable conditions such as large moisture, dust, and narrow space, which makes debugging very difficult

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