Optical detection probe with automatic positioning function for high-temperature melt components

Abstract

The invention relates to an optical detection probe with a high-precision automatic positioning function for molten liquid components. The optical detection probe comprises a main probe body and a high-temperature-resistant shell, wherein an incident laser focusing lens, a spectral signal collecting lens and a conductive optical fiber connector are fixed inside the main probe body; the high-temperature-resistant shell is arranged outside the main probe body; the lower end of the shell can be directly immersed in molten liquid; a gap between the high-temperature-resistant shell and the main probe body is divided into two layers; electrodes are configured at the lower end, which is flush with a focal plane of the incident laser focusing lens, of the high-temperature-resistant shell; and when the molten liquid reaches the height of the electrode, the electrodes are connected with one other, so that the function of automatically positioning liquid level height is realized. The probe has the functions of automatically positioning a focusing liquid level and alleviating the fluctuation of the molten liquid level; and moreover, an optical system is isolated from an external environment, so that the optical system can be effectively prevented from being influenced by dust in a high-temperature melting environment, the strength of an optical signal can be improved, the detection limit of trace elements is reduced, and the molten liquid components can be better detected in real time.

Description

technical field [0001] The invention relates to the field of on-line detection of molten liquid components, in particular to an optical detection probe for molten liquid components with an automatic positioning function, which is used for on-line detection of high-temperature melt components based on laser-induced breakdown spectroscopy. Background technique [0002] In recent years, the steel and metallurgical industry has developed rapidly. Realizing the dynamic control of the metallurgical process has become the goal of the metallurgical industry, and the on-line detection of the composition of the high-temperature melt is the only way to realize the dynamic control. [0003] The temperature of the objects involved in the online detection of molten liquid components is very high, such as the melting temperature of aluminum alloy is about 700°C, and the melting temperature of molten steel is about 1600°C, and the melting condition is in a flowing state, and the surrounding...

AI Technical Summary

Problems solved by technology

However, due to the influence of high temperature and dust in the smelting environment, how to protect the optical system more effectively and extract strong spectral signals to ensure the reliability of the measurement has become an online measurement device for high-temperature melt components using laser-induced spectroscopy. biggest problem

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