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Large-capacity preparation flow cell with optical fiber interface

A technology of optical fiber interface and flow cell, which is applied in the field of liquid chromatography, can solve the problems that the explosion-proof requirements cannot be met, and the optical path cannot be adjusted, so as to achieve the effects of conveniently adjusting the optical path, reducing the loss of light energy, and facilitating the discharge of air bubbles

Inactive Publication Date: 2011-05-25
北京清博华科技有限公司
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AI Technical Summary

Problems solved by technology

The existing preparation flow cell is usually made of quartz glass, its optical path cannot be adjusted according to the difference of sample concentration, and it is usually installed directly on the detector, which cannot meet the explosion-proof requirements

Method used

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  • Large-capacity preparation flow cell with optical fiber interface
  • Large-capacity preparation flow cell with optical fiber interface
  • Large-capacity preparation flow cell with optical fiber interface

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Embodiment Construction

[0028] The present invention a kind of flow cell of optical fiber interface large flow preparation, such as figure 1 , figure 2 As shown, the flow cell consists of a flow cell body 1, a flange joint 2, an adjustment rod 3, a quartz light column 4, a light column sealing gasket 5, a light column sealing pressure plate 6, a light column adjustment sheet 7, a plano-convex lens seat 8, a plano-convex lens 9, It consists of a plano-convex lens gasket 10, an optical fiber adapter 11, a standard optical fiber connector 12, an adjusting rod sealing gasket 13, an adjusting rod sealing pressure plate 14 and a pool nut 15.

[0029] Such as image 3 As shown, the flange joint 2 is welded on the upper and lower ends of the flow cell body 1, and the middle through hole is used for the passage of liquid, and the diameter of the through hole is larger than that of the adjusting rod 3 ( Figure 4 )diameter of.

[0030] return figure 1 with figure 2 , the adjustment rod 3 is provided wit...

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Abstract

The present invention provides a large-capacity preparation flow cell with an optical fiber interface, which comprises a flow cell body, a flange connector, a plurality of adjusting rods, a quartz light column, a light column sealing gasket, a light column sealing pressure plate, a light column adjusting piece, a flat convex lens holder, a flat convex lens, a flat convex lens gasket, an optical fiber adapter, a standard optical fiber connector, an adjusting rod sealing gasket, an adjusting rod sealing pressure plate and a plurality of cell nuts. A detection area is formed between the opposite adjusting rods on the left side and the right side, and the end face of the standard optical fiber connector is arranged at the focal point of the flat convex lens, so that parallel light can be transmitted into the detection area. The present invention has the advantages that the optical path of the large-capacity preparation flow cell can be adjusted conveniently according to the difference of the concentration and light absorbance of materials to be tested, so that the detected values fall into the detection range of a detector. In addition, the flow cell can be arranged away from the detector due to the optical fiber interface, so as to facilitate explosion-proof applications.

Description

Technical field: [0001] The invention relates to a large-flow preparation flow cell with an optical fiber interface, belonging to the field of liquid chromatography. Background technique: [0002] The UV-Vis detector in HPLC is based on the Lambert-Beer law, the light intensity absorbed by the sample is proportional to the sample concentration and the length of light passing through the sample, that is, the path length of the flow cell. The detector qualitatively and quantitatively analyzes the composition and content of the sample by detecting the light intensity absorbed by the sample. [0003] In a large-scale industrial preparation chromatography system, the detector flow cell needs to meet the following requirements: first, the flow cell will not generate a large reverse pressure when the large diameter meets the large flow rate; secondly, the optical path of the flow cell is adjustable, When detecting different sample concentrations, the sensitivity and dynamic range ...

Claims

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Application Information

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IPC IPC(8): G01N21/05G01N21/31G01N21/33G01N30/02
Inventor 肖勇田林
Owner 北京清博华科技有限公司
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