A small and versatile sample chamber for laser-induced breakdown spectroscopy

A technology of laser-induced breakdown and sample chamber, which is applied in the direction of material excitation analysis, material analysis through optical means, and measurement equipment, etc., can solve the problem that is contrary to the original intention of LIBS in-situ analysis, the analysis results are not representative, and the sample cannot be directly analyzed. Measurement and other issues, to achieve the effect of good work reliability, good focus, and good sealing

CN102692399BActive Publication Date: 2015-08-19SICHUAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2015-08-19

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Abstract

The invention discloses a small multifunctional sample room for LIBS (laser-induced breakdown spectroscopy), whose structure mainly includes an openable closed cavity, a focusing lens arranged on a casing top of the cavity, a sample plate mounted on a rotatable lifting column table positioned at the center of the bottom of the cavity, and a signal collection device placed on the casing wall of the cavity and connected with an external detector, wherein no less than one sample cell is designed on the sample plate, is positioned in the sample plate and can rotate to the position below the focusing lens during the rotation of the sample plate; and a lens of the signal collection device points to the sample cell rotating to the position below the focusing lens. The small multifunctional sample room disclosed by the invention can be used for bearing solid particulates, powders and liquid samples simultaneously for measurement, has the characteristics of excellent focusing performance, tightness and working performance, small volume and the like, can be integrated in a laser optical spectrum analyzer or used independently, and is particularly suitable for simultaneously analyzing in-situ collected scraps, rock and slurry samples in petroleum drilling and geological exploration.
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Description

technical field

[0001] The invention relates to a laser-induced breakdown spectrum sample detection technology, in particular to a small multifunctional sample chamber which can be used for laser-induced breakdown spectrum analysis. Background technique

[0002] In the oil exploration industry, through the analysis of the components of drilling fluid, rock and mud on site, it provides a basis for exploration and development decisions, which is an important method to improve the compliance rate of mud logging interpretation and effectively exploit oil and mineral resources. Introduce real-time in-situ testing technology suitable for simultaneous analysis of multi-components and multi-forms to realize real-time analysis of on-site samples and quickly obtain comprehensive first-hand collection data, so as to make correct mud logging interpretation and evaluation, and improve oil and mineral production. The development efficiency of resources can promote the progress of the indu...

Examples

Embodiment 1

[0023] The multifunctional sample chamber that can be used for laser-induced breakdown spectroscopy analysis in this embodiment has a structure as attached figure 1 And attached figure 2 Shown, the airtight chamber 7 that can be opened by the top of the chamber shell, the quartz focusing lens 1 that is arranged on the top of the chamber shell, the sample tray 3 that is installed on the rotatable lifting platform 8 in the center of the bottom of the chamber and is placed on the It consists of a signal collection device 9 connected to an external detector on the shell wall of the chamber. The sample tray and the table plate of the rotating lifting column platform 8 are fixed and arranged together through buckles, and the rotating lifting column platform is driven by a stepping motor to move. The sample plate is designed with 8 symmetrically arranged circular pit sample pools 2, which are located on the same diameter circle in the sample plate surface, and can be turned directl...