CN205861635U - A kind of gas chromatogram thermal conductivity detector (TCD) structure - Google Patents
A kind of gas chromatogram thermal conductivity detector (TCD) structure Download PDFInfo
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- CN205861635U CN205861635U CN201620830469.2U CN201620830469U CN205861635U CN 205861635 U CN205861635 U CN 205861635U CN 201620830469 U CN201620830469 U CN 201620830469U CN 205861635 U CN205861635 U CN 205861635U
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- thermal conductivity
- tcd
- conductivity detector
- conductance cell
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Abstract
The open a kind of gas chromatogram thermal conductivity detector (TCD) structure of this utility model, described thermal conductivity detector (TCD) structure includes thermal conductivity detector (TCD) main body, described thermal conductivity detector (TCD) main body includes conductance cell, conductance cell import, conductance cell exports, described conductance cell is positioned at described thermal conductivity detector (TCD) body interior, described conductance cell import and the outlet of described conductance cell lay respectively at described conductance cell two ends, and stretch out through described thermal conductivity detector (TCD) main body, it is additionally provided with heat abstractor on the outer wall of described thermal conductivity detector (TCD) main body, it is provided with heat-transfer device on the inwall of described thermal conductivity detector (TCD) main body, described conductance cell import is provided with the first purifier, the outlet of described conductance cell is provided with the second purifier.Described gas chromatogram thermal conductivity detector (TCD) structure can filter the impurity in detected gas, improve the precision of detection, air blow back outside when preventing fault, to the conductance cell damage to temperature-sensitive element, realizes being rapidly heated and fast cooling in experimentation simultaneously, shortening experimental period.
Description
Technical field
This utility model relates to thermal conductivity detector (TCD) technical field, is specifically related to a kind of gas chromatogram thermal conductivity detector (TCD) and ties
Structure.
Background technology
Chromatography is the separation of a kind of multicomponent mixture, analytical tool.It mainly utilizes the physical property pair of material
Mixture separates, and each component in mixture is carried out quantitatively, qualitative analysis.The detection of current all kinds of gas chromatograph
In device, thermal conductivity detector (TCD) uses the most universal, but the temperature-sensitive element in existing thermal conductivity detector (TCD) typically uses tungsten-rhenium wire, W-Re
Silk is poor as its antioxygenic property of temperature-sensitive element, measures the impurity in the examined gas of signal or the pollution of aqueous vapor and erosion,
Service life is shorter, and in system, tungsten-rhenium wire can be aoxidized or blow by the oxygen in the air of residual.Thus existing thermal conductivity detector (TCD)
Needing the pretreatment unit of complexity, apparatus structure is complicated, and manufacturing cost is high, and need after the use of existing thermal conductivity detector (TCD) to continue to lead to
Carrier gas is lowered the temperature, and cool time is longer, causes the waste of carrier gas；Additionally, existing thermal conductivity detector (TCD) intensification temperature fall time is longer, no
Can quickly meet various heating gradient needs, and substantially prolongs experimental period, reduce conventional efficient.
Utility model content
In view of this, the application provides a kind of gas chromatogram thermal conductivity detector (TCD) structure, and described gas chromatogram thermal conductance is examined
Survey device structure and can filter the impurity such as the granule in detected gas, aqueous vapor, improve the precision of detection, when preventing fault simultaneously
Outside air blow back, to the conductance cell damage to temperature-sensitive element, extends the life-span of temperature-sensitive element；Simultaneously real in experimentation
Now it is rapidly heated and fast cooling, shortens experimental period.
For solving above technical problem, the technical scheme that this utility model provides is a kind of gas chromatogram thermal conductivity detector (TCD)
Structure, described thermal conductivity detector (TCD) structure includes that thermal conductivity detector (TCD) main body, described thermal conductivity detector (TCD) main body include conductance cell, conductance cell
Import, conductance cell outlet, described conductance cell is positioned at described thermal conductivity detector (TCD) body interior, described conductance cell import and described thermal conductance
Pond outlet lays respectively at described conductance cell two ends, and stretches out through described thermal conductivity detector (TCD) main body, described thermal conductivity detector (TCD)
It is additionally provided with heat abstractor on the outer wall of main body, the inwall of described thermal conductivity detector (TCD) main body is provided with heat-transfer device, described heat
Leading pond import and be provided with the first purifier, the outlet of described conductance cell is provided with the second purifier.
Further, described heat abstractor includes cooling piece, and the thickness of described cooling piece is not less than described Thermal Conductivity
The 2/3 of device body outer wall thickness.
Further, described cooling piece is semiconductor chilling plate.
Further, described heat abstractor also includes that air-cooled chamber, described air-cooled chamber are positioned at described cooling piece outer wall.
Further, being provided with fan in described air-cooled chamber, two ends, described air-cooled chamber are respectively arranged with the import of air-cooled chamber
Export with air-cooled chamber.
Further, described heat-transfer device is ceramic bar, and described ceramic bar is additionally provided with multiple conducting strip,
The plurality of conducting strip is vertically arranged with described ceramic bar.
Further, to include that air inlet, the first filter course, described first filter course are positioned at described for described first purifier
In air inlet.
Further, to include that gas outlet, the second filter course, described second filter course are positioned at described for described second purifier
In gas outlet, in described second filter course, it is filled with deoxidation adsorption particle.
Further, being additionally provided with heater in described thermal conductivity detector (TCD) main body, described heater is near described conductance cell
Arrange.
Further, being additionally provided with temperature sensor in described thermal conductivity detector (TCD) main body, described temperature sensor is close
Described heater is arranged.
Compared with prior art, its detailed description is as follows for the application: technical scheme provides a kind of gas chromatogram
Thermal conductivity detector (TCD) structure, described thermal conductivity detector (TCD) structure is used to include thermal conductivity detector (TCD) main body, thermal conductivity detector (TCD) main body includes
Conductance cell, the two ends of described conductance cell are provided with conductance cell import and conductance cell outlet, and conductance cell import and conductance cell export
Be respectively arranged with the first purifier and the second purifier, wherein, the first purifier can filter in detected gas
The impurity such as grain, aqueous vapor, to reduce the damage to temperature-sensitive element, improve the precision of detection simultaneously；And when running into fault, outside sky
When gas flows backward to conductance cell, the Oxygen Adsorption in extraneous air can be fallen by the second purifier, it is to avoid the oxygen in air is to warm
Lead the temperature-sensitive element in pond and produce oxidation, extend its service life.Additionally, described thermal conductivity detector (TCD) body outer wall is provided with heat radiation
Device, the inwall of thermal conductivity detector (TCD) main body is provided with heat-transfer device, and described heat-transfer device can effectively reduce the temperature of conductance cell
Degree, reduces cool time, shortens experimental period；And when heating up, it is fast that described heat-transfer device ensure that heat transmits
Speed uniformly, improves intensification efficiency.
Having the beneficial effects that of technical scheme: described gas chromatogram thermal conductivity detector (TCD) structure can filter detection
The impurity such as granule in gas, aqueous vapor, improve the precision of detection, and the air blow back outside when simultaneously preventing fault is to thermal conductance
The pond damage to temperature-sensitive element, extends the life-span of temperature-sensitive element；Realize being rapidly heated and fast cooling in experimentation simultaneously,
Shorten experimental period.
Accompanying drawing explanation
Fig. 1 is the structural representation of herein described gas chromatogram thermal conductivity detector (TCD) structure.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the technical solution of the utility model, below in conjunction with being embodied as
The utility model is described in further detail for example, it is clear that described embodiment is only that this utility model part is real
Execute example rather than whole embodiments.Based on the embodiment in this utility model, those of ordinary skill in the art are not making
The every other embodiment obtained under creative work premise, broadly falls into the scope of this utility model protection.
A kind of gas chromatogram thermal conductivity detector (TCD) structure as shown in Figure 1, described thermal conductivity detector (TCD) structure includes that thermal conductance is examined
Surveying device main body 1, described thermal conductivity detector (TCD) main body 1 includes conductance cell 2, conductance cell import 3, conductance cell outlet 4, described conductance cell 2
Being positioned at described thermal conductivity detector (TCD) main body 1 internal, described conductance cell import 3 and described conductance cell outlet 4 lay respectively at described thermal conductance
Two ends, pond 2, and stretch out through described thermal conductivity detector (TCD) main body 1, the outer wall of described thermal conductivity detector (TCD) main body 1 is additionally provided with
Heat abstractor 5, the inwall of described thermal conductivity detector (TCD) main body 1 is provided with heat-transfer device 6, and described conductance cell import 3 is provided with
One purifier 7, described conductance cell outlet 4 is provided with the second purifier 8.
Wherein, described heat abstractor 5 includes cooling piece 9, and the thickness of described cooling piece 9 is not less than described thermal conductivity detector (TCD)
The 2/3 of main body 1 outer wall thickness, described cooling piece 9 is semiconductor chilling plate, and described heat abstractor 5 also includes air-cooled chamber 10, described
Air-cooled chamber 10 is positioned at described cooling piece 9 outer wall, is provided with fan 11 in described air-cooled chamber 10, and two ends, described air-cooled chamber 10 set respectively
It is equipped with air-cooled chamber import 12 and air-cooled chamber outlet 13.
Wherein, described heat-transfer device 6 is ceramic bar 14, and described ceramic bar 14 is additionally provided with multiple conducting strip
15, described conducting strip 15 is vertically arranged with described ceramic bar 14.
Wherein, described first purifier 7 includes that air inlet the 16, first filter course 17, described first filter course 17 are positioned at
In described air inlet 16, described second purifier 8 includes gas outlet the 18, second filter course 19, described second filter course 19
In described gas outlet 18, in described second filter course 19, it is filled with deoxidation adsorption particle.
Additionally, be additionally provided with heater 20 in described thermal conductivity detector (TCD) main body 1, described heater 20 is near described conductance cell
2 are arranged, and are additionally provided with temperature sensor 21, and described temperature sensor 21 is arranged near described heater 20.
Described gas chromatogram thermal conductivity detector (TCD) structure can filter the impurity such as the granule in detected gas, aqueous vapor, improves
The precision of detection, the damage to temperature-sensitive element of the air blow back outside when simultaneously preventing fault to conductance cell 2, prolongation temperature-sensitive
The life-span of element；Realize being rapidly heated and fast cooling in experimentation simultaneously, shorten experimental period.
Below it is only preferred implementation of the present utility model, it is noted that above-mentioned preferred implementation should not regard
For to restriction of the present utility model, protection domain of the present utility model should be as the criterion with claim limited range.For
For those skilled in the art, without departing from spirit and scope of the present utility model, it is also possible to make some
Improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (10)
1. a gas chromatogram thermal conductivity detector (TCD) structure, it is characterised in that: described thermal conductivity detector (TCD) structure includes Thermal Conductivity
Device main body, described thermal conductivity detector (TCD) main body includes conductance cell, conductance cell import, conductance cell outlet, and described conductance cell is positioned at described
Thermal conductivity detector (TCD) body interior, described conductance cell import and the outlet of described conductance cell lay respectively at described conductance cell two ends, and wear
Cross described thermal conductivity detector (TCD) main body to stretch out, the outer wall of described thermal conductivity detector (TCD) main body is additionally provided with heat abstractor, described
Being provided with heat-transfer device on the inwall of thermal conductivity detector (TCD) main body, described conductance cell import is provided with the first purifier, described heat
Lead pond outlet and be provided with the second purifier.
A kind of gas chromatogram thermal conductivity detector (TCD) structure the most according to claim 1, it is characterised in that: described heat abstractor
Including cooling piece, the thickness of described cooling piece is not less than the 2/3 of described thermal conductivity detector (TCD) body outer wall thickness.
A kind of gas chromatogram thermal conductivity detector (TCD) structure the most according to claim 2, it is characterised in that: described cooling piece is
Semiconductor chilling plate.
A kind of gas chromatogram thermal conductivity detector (TCD) structure the most according to claim 2, it is characterised in that: described heat abstractor
Also include that air-cooled chamber, described air-cooled chamber are positioned at described cooling piece outer wall.
A kind of gas chromatogram thermal conductivity detector (TCD) structure the most according to claim 4, it is characterised in that: in described air-cooled chamber
Being provided with fan, two ends, described air-cooled chamber are respectively arranged with the import of air-cooled chamber and the outlet of air-cooled chamber.
A kind of gas chromatogram thermal conductivity detector (TCD) structure the most according to claim 1, it is characterised in that: described heat-transfer device
For ceramic bar, described ceramic bar is additionally provided with multiple conducting strip, the plurality of conducting strip and described ceramic
Bar is vertically arranged.
A kind of gas chromatogram thermal conductivity detector (TCD) structure the most according to claim 1, it is characterised in that: described first purifies
Device includes that air inlet, the first filter course, described first filter course are positioned at described air inlet.
A kind of gas chromatogram thermal conductivity detector (TCD) structure the most according to claim 1, it is characterised in that: described second purifies
Device includes that gas outlet, the second filter course, described second filter course are positioned at described gas outlet, fills in described second filter course
There is deoxidation adsorption particle.
A kind of gas chromatogram thermal conductivity detector (TCD) structure the most according to claim 1, it is characterised in that: described Thermal Conductivity
Being additionally provided with heater in device main body, described heater is arranged near described conductance cell.
A kind of gas chromatogram thermal conductivity detector (TCD) structure the most according to claim 9, it is characterised in that: described thermal conductance is examined
Being additionally provided with temperature sensor in surveying device main body, described temperature sensor is arranged near described heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620830469.2U CN205861635U (en) | 2016-08-02 | 2016-08-02 | A kind of gas chromatogram thermal conductivity detector (TCD) structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620830469.2U CN205861635U (en) | 2016-08-02 | 2016-08-02 | A kind of gas chromatogram thermal conductivity detector (TCD) structure |
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| CN205861635U true CN205861635U (en) | 2017-01-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110554125A (en) * | 2018-05-31 | 2019-12-10 | 滕州市滕海分析仪器有限公司 | thermal conductivity detector, column chamber and installation process of column chamber |
-
2016
- 2016-08-02 CN CN201620830469.2U patent/CN205861635U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110554125A (en) * | 2018-05-31 | 2019-12-10 | 滕州市滕海分析仪器有限公司 | thermal conductivity detector, column chamber and installation process of column chamber |
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