Tube coupling structure for gas chromatography

TWM688158UActive Publication Date: 2026-10-01TRONIC PURITY INC
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Patent Information

Application Number
TW115205295
Authority / Receiving Office
TW · TW
Patent Type
Utility models
Current Assignee / Owner
Filing Date
2026-06-09
Publication Date
2026-10-01
Estimated Expiration
2036-06-08

Smart Images

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    Figure TWG2TB001914428_003
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Abstract

A tube connection structure for gas chromatography includes a chromatography tube and a connecting tube. The chromatography tube is made of glass and includes a first tube body, a first internal channel, and a first opening. The first internal channel is formed inside the first tube body, and the first opening is formed at the end of the first tube body. The connecting tube is made of flexible material and includes a second tube body, a second internal channel, and a second opening. The second internal channel is formed inside the second tube body, and the second opening is formed at the end of the second tube body. The second opening is tightly fitted onto the outer circumferential surface of the first opening. Therefore, this invention achieves an airtight connection without the need for additional connecting parts.
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Claims

1. A tube connection structure for gas chromatography, comprising: a chromatography tube made of glass, the chromatography tube including a first tube body, a first internal channel and a first port, the first internal channel being formed by the interior of the first tube body extending axially therein, and the first port being formed at the end of the first tube body, the first port communicating with the first internal channel; and a connecting tube made of flexible material, the connecting tube including a second tube body, a second internal channel and a second port, the second internal channel being formed by the interior of the second tube body extending axially therein, and the second port being formed at the end of the second tube body, the second port communicating with the second internal channel; wherein... The outer diameter of the first opening is larger than the natural inner diameter of the second opening. The connecting pipe is made of flexible material, which allows the second opening to expand outward and fit tightly around the outer circumference of the first opening.

2. The tube connection structure for gas chromatography as claimed in claim 1, wherein the glass material comprises quartz, fused silica or glass fiber composite material.

3. The tube connection structure for gas chromatography as requested in item 1, wherein the material of the connecting tube is Teflon.

4. The tube connection structure for gas chromatography as claimed in claim 1, wherein the cross-section of the first tube is annular.

5. The tube connection structure for gas chromatography as claimed in claim 1, wherein the cross-section of the second tube is annular.

6. The tube connection structure for gas chromatography as claimed in claim 1, wherein the first tube opening is inserted into the inner channel of the second tube opening, such that a predetermined overlap section is formed between the first tube and the second tube, wherein the first tube and the second tube are in a tight fit relationship in the overlap section.

7. A tube connection structure for gas chromatography, comprising: a chromatography tube made of glass, the chromatography tube including a first tube body, a first internal channel and a first port, the first tube body having an annular cross-section, the first internal channel extending axially inside the first tube body, and the first port forming at the end of the first tube body, the first port communicating with the first internal channel; and a connecting tube made of Teflon, the connecting tube including a second tube body, a second internal channel and a second port, the second tube body having an annular cross-section, the second internal channel extending axially inside the second tube body, and the second port forming at the end of the second tube body, the second port communicating with the second internal channel; wherein... The outer diameter of the first pipe opening is larger than the natural inner diameter of the second pipe opening. The connecting pipe is made of flexible material, which allows the second pipe opening to expand outward so that the first pipe opening can be inserted into the inner channel of the second pipe opening. A predetermined overlap section is formed between the first pipe body and the second pipe body. In the overlap section, the first pipe body and the second pipe body are in a tight fit relationship.