Carbon fiber tube X-ray fluorescence sample cell

A carbon fiber tube and sample cell technology, applied in the field of X-ray fluorescence analyzers, can solve the problems of difficult machining, lower analysis precision and accuracy, poor radiation resistance, etc., achieve good acid resistance and organic corrosion resistance, and improve analysis Good accuracy and radiation resistance

Active Publication Date: 2019-12-31
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Most organic materials are easy to swell in an organic environment, their mechanical properties are reduced after strong irradiation, and their radiation resistance is generally poor, so the application range in post-processing analysis is limited to a certain extent
Graphite crystals have good acid and radiation resistance, but the material is very fragile, difficult to machine, poor in mechanical strength, and has a certain risk of leakage during use
Boron carbide material has good sealing performance, but the material is brittle and fragile after b...

Method used

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  • Carbon fiber tube X-ray fluorescence sample cell
  • Carbon fiber tube X-ray fluorescence sample cell
  • Carbon fiber tube X-ray fluorescence sample cell

Examples

Experimental program
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Embodiment 1

[0022] Design of carbon fiber sample cell:

[0023] Such as figure 1 As shown, carbon fiber tube 1 is selected as the main body of the carbon fiber sample pool, and carbon fiber straight tubes of different diameters, wall thicknesses and lengths can be selected according to the design situation. Carbon fiber tube 1 is made of a full carbon fiber tube. Generally less than 2mm, the inner diameter of the tube is 4-20mm, and the length is 20-100mm. The two ends are connected by specially designed joints, which can be directly connected with stainless steel pipelines in online analysis or made as plugs for offline sample analysis.

[0024] Connector Design:

[0025] The joint is composed of a sleeve 2, a sealing ring 3 and a base 4. The sealing ring 3 can be made of organic material or a metal sealing ring, and the sleeve 2 and the base 4 can be made of stainless steel. There are internal threads in the casing 2, and corresponding external threads on the outside of the base 4. W...

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Abstract

The invention discloses a carbon fiber tube X-ray fluorescence sample cell. The carbon fiber tube X-ray fluorescence sample cell comprises a sample cell main body and a joint; the sample cell main body is a carbon fiber tube; the joint is composed of a sleeve, a sealing ring and a base; internal threads are arranged in the sleeve; corresponding external threads are arranged outside the base; and the sealing ring located in the middle can be squeezed when the threads are matched and pressed, so that the sealing is achieved. The carbon fiber tube X-ray fluorescence sample cell provided by the invention has relatively small absorption on X-ray fluorescence, does not introduce errors in post-processing of conventional analysis of uranium, neptunium, plutonium and other elements, and meanwhile,the carbon fiber X-ray fluorescence sample cell has good radiation resistance, good acid and organic corrosion resistance, strong mechanical property and excellent comprehensive performance.

Description

technical field [0001] The invention relates to the technical field of X-ray fluorescence analyzers, in particular to a carbon fiber tube X-ray fluorescence sample cell. Background technique [0002] X-ray fluorescence instrument is a commonly used analytical instrument in post-processing production and research. In a conventional X-ray fluorescence analyzer (XRF), in order to reduce the absorption of X-rays by materials, the materials used in the optical path of the light irradiating the sample and the detector receiving the X-ray fluorescence of the sample are organic materials composed of light elements such as mylar film or carbonized Inorganic materials such as boron and graphite crystals. [0003] The sample medium in the post-treatment is mainly high-concentration nitric acid or TBP / OK, so the sample cell material is required to have good acid resistance, organic corrosion resistance and radiation resistance. Most organic materials are easy to swell in an organic en...

Claims

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Application Information

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IPC IPC(8): G01N23/223
CPCG01N23/223G01N2223/307
Inventor 张彤康海英陶苗苗郑维明邵少雄
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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