CN202854100U - Thermal conductivity detectors of gas chromatographic analyzer - Google Patents
Thermal conductivity detectors of gas chromatographic analyzer Download PDFInfo
- Publication number
- CN202854100U CN202854100U CN 201220567311 CN201220567311U CN202854100U CN 202854100 U CN202854100 U CN 202854100U CN 201220567311 CN201220567311 CN 201220567311 CN 201220567311 U CN201220567311 U CN 201220567311U CN 202854100 U CN202854100 U CN 202854100U
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- thermal conductivity
- tcd
- conductivity detector
- gas
- thermal
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The utility model relates to thermal conductivity detectors of a gas chromatographic analyzer, which comprises a constant temperature box and a plurality of thermal conductivity detectors fixed in the constant temperature box, wherein the thermal conductivity detectors are divided into gas sample thermal conductivity detectors and reference thermal conductivity detectors; each thermal conductivity detector comprises a body, a thermal conducting wire, a locking sleeve joint, a sealing cushion and a sensor; a U-shaped gas path is formed in each locking sleeve joint and each sealing cushion, and the thermal conducting wire and the sensor are arranged on the U-shaped gas path. With the adoption of the thermal conductivity detectors of the gas chromatographic analyzer, a gas flow is fully contacted with the thermal conducting wire, so that the detection accuracy is high; and meanwhile, the thermal conductivity detectors are contained in the constant temperature box, so that the temperature of the environment is constant.
Description
[technical field]
The utility model relates to a kind of building block of gas chromatographicanalyzer, is specifically related to a kind of thermal conductivity detector (TCD) of gas chromatographicanalyzer.
[background technology]
The thermal conductivity detector (TCD) of the gas chromatographicanalyzer of prior art adopts more processes reference conductance cell and sample gas conductance cell in the same metal.The conductance cell volume of above-mentioned thermal conductivity detector (TCD) is large, and the conductance cell temperature interacts, and can reduce measuring accuracy; And use straight-through gas circuit, the heated filament length that this structure is used is long, and air-flow contacts insufficiently with heated filament, also can affect measuring accuracy.
Therefore, for avoiding above-mentioned technical matters, necessaryly provide a kind of thermal conductivity detector (TCD) with structure improved gas chromatographicanalyzer, to overcome described defective of the prior art.
[utility model content]
For addressing the above problem, the purpose of this utility model is to provide the thermal conductivity detector (TCD) of the high gas chromatographicanalyzer of a kind of measuring accuracy.
For achieving the above object, the technical scheme that the utility model is taked is: a kind of thermal conductivity detector (TCD) of gas chromatographicanalyzer, and it comprises constant temp. box and some thermal conductivity detector (TCD)s that is fixed in the constant temp. box; Wherein, described thermal conductivity detector (TCD) is divided into sample gas thermal conductivity detector (TCD) and reference thermal conductivity detector (TCD); Each thermal conductivity detector (TCD) comprises body, thermal conductance silk, ferrule fitting, sealing gasket and sensor; Be formed with a U-shaped gas circuit in described ferrule fitting and the body; Described thermal conductance silk and sensor are positioned on the U-shaped gas circuit.
The thermal conductivity detector (TCD) of gas chromatographicanalyzer of the present utility model further is set to: described constant temp. box is the constant temp. box of rustproof aluminum alloy material.
The thermal conductivity detector (TCD) of gas chromatographicanalyzer of the present utility model further is set to: the thermal conductance silk that described thermal conductance silk is tungsten-rhenium alloy.
The thermal conductivity detector (TCD) of gas chromatographicanalyzer of the present utility model also is set to: described sample gas thermal conductivity detector (TCD) is specially 4, and described reference thermal conductivity detector (TCD) is specially 1.
Compared with prior art, the utlity model has following beneficial effect: the thermal conductivity detector (TCD) of gas chromatographicanalyzer of the present utility model fully contacts air-flow with the thermal conductance silk, thereby makes accuracy of detection high, simultaneously, thermal conductivity detector (TCD) is contained in the constant temp. box, thereby makes environment temperature constant.
[description of drawings]
Fig. 1 is the structural representation of the thermal conductivity detector (TCD) of gas chromatographicanalyzer of the present utility model.
Fig. 2 is the synoptic diagram of the sample gas thermal conductivity detector (TCD) among Fig. 1.
Fig. 3 is that Fig. 2 is along the sectional drawing of B-B.
[embodiment]
See also Figure of description 1 to shown in the accompanying drawing 3, the utility model is a kind of thermal conductivity detector (TCD) of gas chromatographicanalyzer, and it comprises constant temp. box 1 and some thermal conductivity detector (TCD)s 2 that is fixed in the constant temp. box 1.
Wherein, described constant temp. box 1 constant temp. box 1 that is the rustproof aluminum alloy material.
Described thermal conductivity detector (TCD) 2 is divided into sample gas thermal conductivity detector (TCD) 21 and reference thermal conductivity detector (TCD) 22.Wherein, described sample gas thermal conductivity detector (TCD) 21 is specially 4, and described reference thermal conductivity detector (TCD) 22 is specially 1.
Further, each thermal conductivity detector (TCD) 2 comprises body 3, thermal conductance silk 4, ferrule fitting 5, sealing gasket 6 and sensor 7.Wherein, be formed with a U-shaped gas circuit 8 in described ferrule fitting 5 and the body 3.Described thermal conductance silk 4 and sensor 7 are positioned on the U-shaped gas circuit 8.Described thermal conductance silk 4 is the thermal conductance silk 4 of tungsten-rhenium alloy, and it adopts the mode of spiral winding to be fixed on the body.
The thermal conductivity detector (TCD) of gas chromatographicanalyzer of the present utility model in use, the logical carrier gas of reference thermal conductivity detector (TCD) 22, sample gas thermal conductivity detector (TCD) 21 logical sample gas, thermal conductance silk 4 are by the constant voltage circuit energising, the thermal conductance silk 4 in 5 thermal conductivity detector (TCD)s 2 forms electric bridges.Fashionable when the sample air-flow, because sample gas is different from the thermal conductivity of carrier gas, cause thermal conductance silk 4 resistance variations, make electric bridge uneven, thereby produce voltage difference, obtain detecting data.
Above embodiment only is the preferred embodiment of this creation, not in order to limiting this creation, all in this creation spirit and principle within make any modification, be equal to replacement, improvement etc., all should be included within the protection domain of this creation.
Claims (4)
1. the thermal conductivity detector (TCD) of a gas chromatographicanalyzer is characterized in that: comprise constant temp. box and some thermal conductivity detector (TCD)s that is fixed in the constant temp. box; Wherein, described thermal conductivity detector (TCD) is divided into sample gas thermal conductivity detector (TCD) and reference thermal conductivity detector (TCD); Each thermal conductivity detector (TCD) comprises body, thermal conductance silk, ferrule fitting, sealing gasket and sensor; Be formed with a U-shaped gas circuit in described ferrule fitting and the body; Described thermal conductance silk and sensor are positioned on the U-shaped gas circuit.
2. the thermal conductivity detector (TCD) of gas chromatographicanalyzer as claimed in claim 1, it is characterized in that: described constant temp. box is the constant temp. box of rustproof aluminum alloy material.
3. the thermal conductivity detector (TCD) of gas chromatographicanalyzer as claimed in claim 1 is characterized in that: the thermal conductance silk that described thermal conductance silk is tungsten-rhenium alloy.
4. the thermal conductivity detector (TCD) of gas chromatographicanalyzer as claimed in claim 1, it is characterized in that: described sample gas thermal conductivity detector (TCD) is specially 4, and described reference thermal conductivity detector (TCD) is specially 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220567311 CN202854100U (en) | 2012-10-21 | 2012-10-21 | Thermal conductivity detectors of gas chromatographic analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220567311 CN202854100U (en) | 2012-10-21 | 2012-10-21 | Thermal conductivity detectors of gas chromatographic analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202854100U true CN202854100U (en) | 2013-04-03 |
Family
ID=47985284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220567311 Expired - Fee Related CN202854100U (en) | 2012-10-21 | 2012-10-21 | Thermal conductivity detectors of gas chromatographic analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202854100U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111373245A (en) * | 2017-12-19 | 2020-07-03 | 株式会社岛津制作所 | Thermal conductivity detector |
| CN113203769A (en) * | 2021-04-15 | 2021-08-03 | 电子科技大学 | High-air-tightness micro thermal conductivity detector and manufacturing method thereof |
| CN116540003A (en) * | 2023-07-05 | 2023-08-04 | 成都汉度科技有限公司 | Cable joint disaster prevention monitoring method and system |
| CN117470899A (en) * | 2023-10-26 | 2024-01-30 | 北京东分科技发展有限公司 | Novel device and method for measuring gas concentration by using thermal conductivity principle sensor |
-
2012
- 2012-10-21 CN CN 201220567311 patent/CN202854100U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111373245A (en) * | 2017-12-19 | 2020-07-03 | 株式会社岛津制作所 | Thermal conductivity detector |
| CN111373245B (en) * | 2017-12-19 | 2023-02-17 | 株式会社岛津制作所 | Thermal conductivity detector |
| CN113203769A (en) * | 2021-04-15 | 2021-08-03 | 电子科技大学 | High-air-tightness micro thermal conductivity detector and manufacturing method thereof |
| CN116540003A (en) * | 2023-07-05 | 2023-08-04 | 成都汉度科技有限公司 | Cable joint disaster prevention monitoring method and system |
| CN116540003B (en) * | 2023-07-05 | 2023-08-29 | 成都汉度科技有限公司 | Cable joint disaster prevention monitoring method and system |
| CN117470899A (en) * | 2023-10-26 | 2024-01-30 | 北京东分科技发展有限公司 | Novel device and method for measuring gas concentration by using thermal conductivity principle sensor |
| CN117470899B (en) * | 2023-10-26 | 2024-06-14 | 北京东分科技发展有限公司 | Device and method for measuring gas concentration by using thermal conductivity principle sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20151021 |
|
| EXPY | Termination of patent right or utility model |