Mass spectrum and chromatography interface device and mounting method thereof

An interface device and chromatographic technology, applied in the field of interface devices of mass spectrometry and chromatography, can solve the problems of damage to turbomolecular pump, uneven heat transfer, chromatographic column fragments easily falling into the vacuum chamber, etc., so as to avoid adjustment and even heat tracing. , to avoid the effect of adsorption and condensation

Pending Publication Date: 2021-05-25
HANGZHOU PUYU TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 2. The sealing position between the liner and the chromatographic column is located on the far right side away from the vacuum chamber, which means that the chromatographic column channel in the middle of the liner will be evacuated, so when heating the chromatographic column, it mainly depends on the chromatographic column and The slender curve formed by the liner channel contact conducts heat, which is prone to uneven heat transfer
Fragments of the column can easily fall into the vacuum chamber during this process and may damage the turbomolecular pump

Method used

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  • Mass spectrum and chromatography interface device and mounting method thereof
  • Mass spectrum and chromatography interface device and mounting method thereof

Examples

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Effect test

Embodiment 1

[0035] Figure 1-2 A schematic structural diagram of an interface device for mass spectrometry and chromatography in an embodiment of the present invention is given, as shown in Figure 1-2 As shown, the interface device of the mass spectrometry and chromatography includes:

[0036] The chromatographic column 10 is used to separate various components to be measured in the substance, and send them to the ion source in the vacuum chamber 81 for ionization;

[0037] An end cover, the end cover has a first axial extension 11, a radial portion 12, a second axial extension 13 and a third axial extension 14 arranged in sequence; along the direction from the third axial extension 14 To the direction of the first axial extension 11, the first axial extension 11 has a hollow inner diameter enlarged section, the radial part 12 has a through hole; the second axial extension 13 connects the In the radial part of the circumferential direction, the outer diameter of the second axial extens...

Embodiment 2

[0054] An application example of the interface device and installation method for mass spectrometry and chromatography according to Embodiment 1 of the present invention.

[0055] In this application example, if figure 1 As shown, the end cap has a first axial extension 11, a radial portion 12, a second axial extension 13 and a third axial extension 14 arranged in sequence; along the direction from the third axial extension 14 to the first The direction of an axial extension 11, the first axial extension 11 has a hollow inner diameter enlarged section, the radial part 12 has a through hole; the second axial extension 13 connects the radial In the circumferential direction of the portion 12, the outer diameter of the second axially extending portion 13 is smaller than the outer diameter of the third axially extending portion 14;

[0056] The extrusion part 21 and the pressure part 22 respectively have through holes, and the pressure part 22 is arranged in the inner diameter en...

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Abstract

The invention provides a mass spectrum and chromatography interface device and a mounting method thereof. The mass spectrum and chromatography interface device comprises a chromatographic column, the end cover is provided with a first axial extension part, a radial part, a second axial extension part and a third axial extension part which are arranged in sequence; a hollow inner diameter expansion section is arranged in the first axial extension part, and a through hole is formed in the radial part; the second axial extension part is connected with the circumferential direction of the radial part, and the outer diameter of the second axial extension part is smaller than that of the third axial extension part; the pressed part is arranged in the inner diameter expansion section and is extruded by the extrusion part; a protective tube is arranged on one side of the radial part; the chromatographic column sequentially penetrates through the protective tube, the through hole of the radial part, the through hole of the pressed part and the through hole of the extrusion part; and a sleeve is arranged on the outer side of the protection pipe, one end of the sleeve is connected with the third axial extending part, and the other end of the sleeve is provided with a mounting position. The sealing piece is arranged on the outer side of the second axial extrusion part in a sleeving mode. The device has the advantages of good sealing, small error and the like.

Description

technical field [0001] The invention relates to mass spectrometry and chromatography, in particular to an interface device and method for mass spectrometry and chromatography. Background technique [0002] The GC / MSD interface is used to introduce the sample gas separated by the chromatographic column into the mass analyzer for analysis. When the mass detector detects the sample, it often needs a good vacuum environment, and the GC / MSD interface is easy to introduce leaks during the process of introducing the sample gas into the vacuum chamber. In addition, the chromatographic column is easy to be cold during the transmission process, resulting in the adsorption of a small amount of sample gas, which leads to the broadening of the peak width of the sample gas, so the heat tracing of the GC / MSD interface is very important. [0003] The solution of the existing instrument is to fix the GC / MSD interface to one side of the analyzer box through bolts, and seal it with an O-ring ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/88
CPCG01N30/88G01N2030/8881
Inventor 林建强吴键波马乔段炼刘立鹏胡建坤韩双来
Owner HANGZHOU PUYU TECH DEV CO LTD
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