Planar gas chromatography column structure and multi-layer planar gas chromatography column structure

Abstract

A planar gas chromatography tube structure includes a chromatography tube and a sealant. The chromatography tube is continuously spiraled around an axis in a plane, forming a spiral segment with each revolution. The radial distance from these spiral segments to the axis increases sequentially from the inside out, and any two adjacent spiral segments are seamlessly adjacent in the radial direction. The sealant covers the outside of the chromatography tube and fills the space between the outer walls of each two adjacent spiral segments. The sealant allows for close contact with the surface of a heat exchanger, and the heat generated by the heat exchanger is uniformly conducted to the spiral segments via the sealant, resulting in high temperature uniformity of the chromatography tube during heating.

Claims

1. A flat-plate gas chromatography tube structure, comprising: a chromatography tube including a plurality of winding segments, an inner end and an outer end, the chromatography tube being continuously wound in a planar spiral shape around an axis as a center on a plane, and each winding segment is formed by the chromatography tube winding once, such that the radial distance of the winding segments to the axis increases sequentially from the inside to the outside, the inner end being located at the end of the innermost winding segment, and the outer end being located at the end of the outermost winding segment; and a sealant filling the space between the outer walls of every two adjacent winding segments.

2. The flat-plate gas chromatography tube structure of claim 1, wherein the radial distance from the inner end to the axis is greater than zero, such that a hollow portion is formed inside the chromatography tube.

3. The flat-plate gas chromatography tube structure of claim 1, wherein each of the outer loop segments defines the boundary of the inner loop segment adjacent to it, such that every two adjacent loop segments are seamlessly adjacent in a radial direction.

4. The flat-plate gas chromatography tube structure of claim 1, wherein at least a portion of the adjacent bypass sections are seamlessly adjacent in the radial direction.

5. The flat-plate gas chromatography tube structure of claim 1, wherein the chromatography tube is made of glass, quartz, fused silica, glass fiber composite material or a composite tube containing the above materials.

6. The flat-plate gas chromatography tube structure of claim 1, wherein the gap-filling system is completely or partially covered outside the chromatography tube.

7. The flat-plate gas chromatography tube structure as claimed in claim 1, wherein the sealant system is made of a curable material.

8. A multilayer planar gas chromatography tube structure, comprising: at least two planar gas chromatography tube structures as described in any one of claims 1 to 7, wherein the planar gas chromatography tube structures are arranged in a longitudinally stacked manner; wherein, The chromatographic tubes of the lower-layer flat-plate gas chromatography tube structure are connected to the chromatographic tubes of the upper-layer flat-plate gas chromatography tube structure, so that the adjacent layers of chromatographic tubes form a continuous gas flow path.

9. The multilayer flat-plate gas chromatography tube structure of claim 8, wherein the inner end of the lower layer of the chromatography tube is connected to the inner end of the upper layer of the chromatography tube.

10. The multilayer flat-plate gas chromatography tube structure of claim 8, wherein the outer end of the lower layer of the chromatography tube is connected to the outer end of the upper layer of the chromatography tube.

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