CN207689441U - A kind of adsorption-desorption pipe device of gas chromatograph - Google Patents
A kind of adsorption-desorption pipe device of gas chromatograph Download PDFInfo
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- CN207689441U CN207689441U CN201721649015.6U CN201721649015U CN207689441U CN 207689441 U CN207689441 U CN 207689441U CN 201721649015 U CN201721649015 U CN 201721649015U CN 207689441 U CN207689441 U CN 207689441U
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- adsorption
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- desorption
- desorption pipe
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Abstract
The utility model discloses a kind of adsorption-desorption pipe device of gas chromatograph, is related to sample devices technical field.The device includes air inlet pipe, escape pipe and adsorption-desorption pipe, two quick-release connectors are fastened on the both ends of adsorption-desorption pipe respectively, one end of reducing straight coupling is spirally connected with quick-release connector, reducing nut and the other end of reducing straight coupling are spirally connected, reducing straight coupling is hollow structure, and air inlet pipe and an air outlet pipe is threaded through respectively in the hollow cavity of the reducing straight coupling at adsorption-desorption pipe both ends.The apparatus structure is simple, reliability is high, and disassembly and installation is convenient, substantially reduces the time for replacing chromatographic column, has achieved the purpose that quick detection.
Description
Technical field
The utility model is related to a kind of adsorption-desorption pipe of sample devices technical field more particularly to gas chromatograph dresses
It sets.
Background technology
Gas chromatograph is in fire investigation, oil, chemical industry, biochemistry, medical and health, food industry, environmental protection etc.
Using very wide.It is in addition to for qualitatively and quantitatively analyzing, moreover it is possible to distribution coefficient of the determination sample in stationary phase, activity coefficient,
The physicochemical constants such as molecular weight and Rui Sheng specific surface areas, be it is a kind of to each constituent in mixed gas carry out analysis detection
Instrument.And adsorption-desorption pipe (also known as " chromatographic column ", " splitter " etc.) is a kind of separation analysis means, separation is core, because
This chromatographic column for undertaking centrifugation is the heart of chromatographic system.Requirement to chromatographic column is that column effect is high, selectivity is good, analysis speed
It spends fast etc..
The chromatographic column that existing gas-chromatography uses is different with the physicochemical property of filler by capillarity and determines
The separation of substance to be analyzed.It is, in principle, that the chromatographic column of specific filler to predetermined substance have selective absorption, desorption
Ability, this requires chromatogram column lengths cannot be too short, to allow carrier gas to have the sufficient time to flow through chromatographic column.Simultaneously, it is contemplated that wave
The feature of hair property organic pollution/half volatile organic contaminant should not promote to inhale using the method that long-time excessively heats
The desorption of addendum matter is carbonized to avoid coking.
In actual application, according to different site environment requirements, different chromatographic columns is needed replacing, it is traditional at this time
There are awkward difficulties for gas chromatograph, and dismounting is difficult, and replacement chromatographic column is time-consuming and laborious, while it is impossible to meet sealings to want
It asks, leads to gas leakage, influence to use, while during dismantling chromatographic column, due to structure design and unreasonable, can usually squeeze broken
Glass-lined needs to install again again.
Utility model content
It is simple in structure, can in view of the above-mentioned problems, the utility model proposes a kind of adsorption-desorption pipe device of gas chromatograph
By property height, disassembly and installation is convenient, substantially reduces the time for replacing chromatographic column, has achieved the purpose that quick detection.
The utility model uses following technical scheme：
A kind of adsorption-desorption pipe device of gas chromatograph, including：Air inlet pipe, escape pipe and adsorption-desorption pipe, two fast
Changing-over head engage respectively at the both ends of adsorption-desorption pipe, one end and the quick-release connector of reducing straight coupling are spirally connected, reducing nut and
The other end of reducing straight coupling is spirally connected, and reducing straight coupling is hollow structure, and air inlet pipe and an air outlet pipe is threaded through absorption respectively
In the hollow cavity of the reducing straight coupling at desorption tube both ends.
As a kind of preferred embodiment of the utility model, the sealing being bonded with adsorption-desorption pipe is provided in quick-release connector
Circle.
As a kind of preferred embodiment of the utility model, be provided in reducing nut reducing cutting ferrule and with reducing straight coupling
Fitting.
As a kind of preferred embodiment of the utility model, it is additionally provided with heat transfer casing, heat transfer casing is threaded through heating muff
It is interior, and fixed with heating muff.
As a kind of preferred embodiment of the utility model, adsorption-desorption pipe is threaded through in heat transfer casing.
As a kind of preferred embodiment of the utility model, heating muff is fixed on the base.
As a kind of preferred embodiment of the utility model, temperature sensor is additionally provided on heating muff.
As a kind of preferred embodiment of the utility model, the temperature control controlled by temperature sensor is additionally provided on heating muff
Switch.
As a kind of preferred embodiment of the utility model, air inlet pipe and an air outlet pipe is symmetrical structure.
The beneficial effects of the utility model are：
(1) the adsorption-desorption pipe device of the gas chromatograph of the utility model, pass through be arranged quick-release connector so that dismounting and
It is easier for installation, the time for replacing chromatographic column is substantially reduced, has achieved the purpose that quick detection, it is straight-through by the way that reducing is arranged
Connector and reducing nut improve the versatility of device, and whole device is simple in structure, reliability is high.
(2) the adsorption-desorption pipe device of the gas chromatograph of the utility model, by the way that conduct heat casing and heating muff is arranged,
And it is provided with temperature detect switch (TDS) and temperature sensor so that device forms the structure of full clad type, passes through the quick of heating muff
Heating, can greatly accelerate the desorption process for volatility/semi-volatile organic matter that adsorption-desorption pipe is adsorbed, to whole
The capability of fast response of device is improved on body.
Description of the drawings
Fig. 1 is the adsorption-desorption pipe device schematic diagram of gas chromatograph provided by the utility model.
In figure：
1, air inlet pipe；2, escape pipe；3, adsorption-desorption pipe；4, quick-release connector；5, reducing straight coupling；6, reducing nut；
7, conduct heat casing；8, heating muff；9, pedestal.
Specific implementation mode
The utility model is described in further detail with reference to the accompanying drawings and examples.It is understood that herein
Described specific embodiment is used only for explaining the utility model, rather than the restriction to the utility model.It further needs exist for
It is bright, it illustrates only for ease of description, in attached drawing and the relevant part of the utility model rather than entire infrastructure.
As shown in Figure 1 be gas chromatograph provided by the utility model adsorption-desorption pipe device schematic diagram, mainly by
Air inlet pipe 1, escape pipe 2, adsorption-desorption pipe 3, quick-release connector 4, reducing straight coupling 5, reducing nut 6, heat transfer casing 7, heating
Casing 8 and pedestal 9 form.Entire adsorption-desorption pipe 3 is symmetrical structure, and it is air inlet or gas outlet not divide which end.With
For Fig. 1, using left side as air inlet pipe 1, using right side as escape pipe 2, air inlet pipe 1 is identical as the structure being arranged on escape pipe 2.
Two quick-release connectors 4 are fastened on the both ends of adsorption-desorption pipe 3 respectively, so that disassembly and installation is more convenient.Quick change
It is provided with the sealing ring (not marked in figure) being bonded with adsorption-desorption pipe 3 in connector 4, ensure that the air-tightness of device.Become straight
One end of pass joint 5 is spirally connected with quick-release connector 4, and reducing nut 6 and the other end of reducing straight coupling 5 are spirally connected, and reducing is straight-through to be connect
First 5 be hollow structure, and air inlet pipe 1 and escape pipe 2 are threaded through the hollow of the reducing straight coupling 5 at 3 both ends of adsorption-desorption pipe respectively
Intracavitary.It is provided with reducing cutting ferrule (not marked in figure) in reducing nut 6 and is bonded with reducing straight coupling 5, reducing cutting ferrule is set
Set the leakproofness that ensure that at inlet end reducing straight coupling 5.The setting of reducing straight coupling 5 and reducing nut 6 improves
The versatility of device can replace the device of different-diameter according to demand under actual working environment.During reducing straight coupling 5 is
Hollow structure, gas are imported in adsorption-desorption pipe 3 from the air inlet pipe 1 and reducing straight coupling 5 of adsorption-desorption pipe side and are purged,
And it is discharged from the reducing straight coupling 5 of 3 other side of adsorption-desorption pipe and escape pipe 2.
Adsorption-desorption pipe 3 is threaded through in heat transfer casing 7, heat transfer casing 7 be threaded through in heating muff 8 and with heating muff 8
Fixed, heating muff 8 is fixed on pedestal 9.Heating muff 8 is usually electric-heating ceramic structure, is heat source；Conducting heat casing 7 will
For heat transfer to adsorption-desorption pipe 3, the casing 7 that usually conducts heat is set as copper pipe, on the one hand ensure that the high efficiency of heat transfer, another party
Face copper pipe is more durable compared to quartz ampoule etc., will not be damaged during using or replacing adsorption-desorption pipe 3, causes the damage of device
It is bad.Pass through setting heat transfer casing 7 and heating muff 8 so that adsorption-desorption pipe 3 forms the structure of full clad type, passes through heating
The quick heating of casing 8 can greatly accelerate the desorption for volatility/semi-volatile organic matter that adsorption-desorption pipe 3 is adsorbed
Process, to improve the capability of fast response of device on the whole.
It is additionally provided with temperature sensor (not marked in figure) on heating muff 8, is additionally provided on heating muff 8 and is passed by temperature
The temperature detect switch (TDS) (not marked in figure) of sensor control, temperature sensor and temperature detect switch (TDS) ensure that the heating to adsorption-desorption pipe 3
Process automatically controls, and makes the temperature residing for adsorption-desorption pipe 3 more constant.When adsorption-desorption pipe 3 when the temperature is excessively high, temperature
Signal is passed to temperature detect switch (TDS) by sensor, and temperature detect switch (TDS) is closed, and heating muff 8 stops heating.
In actual use, according to site environment and need subject gas type to be tested, adsorption-desorption is selected
Adsorption-desorption pipe 3 is threaded through in heat transfer casing 7 by pipe 3.Select suitable dimension quick-release connector 4, by reducing straight coupling 5 with
Quick-release connector 4 is spirally connected, and reducing nut 6 and reducing straight coupling 5 are spirally connected, and at this time engages the quick-release connector 4 connected respectively
At 3 both ends of adsorption-desorption pipe, that is, complete the installation of whole device.When needing replacing adsorption-desorption pipe 3, absorption need to only be solved
The quick-release connector 4 of 3 both ends of suction pipe engaging is extracted, and replaces adsorption-desorption pipe 3, then quick-release connector 4 and new adsorption-desorption pipe 3 are blocked
It closes, that is, completes the replacement of adsorption-desorption pipe 3.Whole device is simple in structure, reliability is high, and disassembly and installation is more convenient, greatly
It is big to shorten the time for replacing chromatographic column, achieve the purpose that quick detection.
Note that above are only the preferred embodiment and institute's application technology principle of the utility model.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment here, can carry out for a person skilled in the art various apparent
Change, readjust and substitutes without departing from the scope of protection of the utility model.Therefore, although by above example to this
Utility model is described in further detail, but the utility model is not limited only to above example, is not departing from this reality
Can also include other more equivalent embodiments in the case of with novel design, and the scope of the utility model is by appended power
Sharp claimed range determines.
Claims (9)
1. a kind of adsorption-desorption pipe device of gas chromatograph, including：Air inlet pipe (1), escape pipe (2) and adsorption-desorption pipe (3),
It is characterized in that, two quick-release connectors (4) are fastened on the both ends of the adsorption-desorption pipe (3) respectively, reducing straight coupling (5)
One end is spirally connected with the quick-release connector (4), and reducing nut (6) and the other end of the reducing straight coupling (5) are spirally connected, the change
Diameter straight coupling (5) is hollow structure, and the air inlet pipe (1) and the escape pipe (2) are threaded through the adsorption-desorption pipe respectively
(3) in the hollow cavity of the reducing straight coupling (5) at both ends.
2. the adsorption-desorption pipe device of gas chromatograph according to claim 1, which is characterized in that the quick-release connector
(4) sealing ring being bonded with the adsorption-desorption pipe (3) is provided in.
3. the adsorption-desorption pipe device of gas chromatograph according to claim 1, which is characterized in that the reducing nut
(6) it is provided with reducing cutting ferrule in, reducing cutting ferrule is bonded with the reducing straight coupling (5).
4. the adsorption-desorption pipe device of gas chromatograph according to claim 1, which is characterized in that be additionally provided with heat transfer jacket
It manages (7), heat transfer casing (7) is threaded through in heating muff (8), and fixed with the heating muff (8).
5. the adsorption-desorption pipe device of gas chromatograph according to claim 4, which is characterized in that the adsorption-desorption pipe
(3) it is threaded through in heat transfer casing (7).
6. the adsorption-desorption pipe device of gas chromatograph according to claim 4, which is characterized in that the heating muff
(8) it is fixed on pedestal (9).
7. the adsorption-desorption pipe device of gas chromatograph according to claim 6, which is characterized in that the heating muff
(8) temperature sensor is additionally provided on.
8. the adsorption-desorption pipe device of gas chromatograph according to claim 7, which is characterized in that the heating muff
(8) temperature detect switch (TDS) controlled by temperature sensor is additionally provided on.
9. the adsorption-desorption pipe device of gas chromatograph according to claim 1, which is characterized in that the air inlet pipe (1)
It is symmetrical structure with the escape pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721649015.6U CN207689441U (en) | 2017-11-30 | 2017-11-30 | A kind of adsorption-desorption pipe device of gas chromatograph |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721649015.6U CN207689441U (en) | 2017-11-30 | 2017-11-30 | A kind of adsorption-desorption pipe device of gas chromatograph |
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| Publication Number | Publication Date |
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| CN207689441U true CN207689441U (en) | 2018-08-03 |
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| CN201721649015.6U Active CN207689441U (en) | 2017-11-30 | 2017-11-30 | A kind of adsorption-desorption pipe device of gas chromatograph |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095552A (en) * | 2019-04-29 | 2019-08-06 | 北京鹏宇昌亚环保科技有限公司 | VOC removes water collecting trap |
| CN111198261A (en) * | 2020-01-09 | 2020-05-26 | 上海德拉根印刷机械有限公司 | Die-cutting paper reverse side detection mechanism |
| CN112611838A (en) * | 2020-11-27 | 2021-04-06 | 中国人民解放军63919部队 | Permeation cavity component protection device for standard gas generation device |
-
2017
- 2017-11-30 CN CN201721649015.6U patent/CN207689441U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095552A (en) * | 2019-04-29 | 2019-08-06 | 北京鹏宇昌亚环保科技有限公司 | VOC removes water collecting trap |
| CN110095552B (en) * | 2019-04-29 | 2024-01-19 | 北京鹏宇昌亚环保科技有限公司 | VOC dewatering trap |
| CN111198261A (en) * | 2020-01-09 | 2020-05-26 | 上海德拉根印刷机械有限公司 | Die-cutting paper reverse side detection mechanism |
| CN112611838A (en) * | 2020-11-27 | 2021-04-06 | 中国人民解放军63919部队 | Permeation cavity component protection device for standard gas generation device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191231 Address after: 518000 Guangdong city of Shenzhen province Nanshan District Taoyuan Xueyuan Road 1088 Street Co-patentee after: Beijing Peng Yu Chang Ya Environmental Protection Technology Co., Ltd. Patentee after: Shenzhen Nanke big asset management limited company Address before: 100083 Beijing city Haidian District Wangzhuang Road No. 1, Tsinghua Tongfang technology building D, East Building 28 storey Co-patentee before: Beijing Peng Yu Chang Ya Environmental Protection Technology Co., Ltd. Patentee before: BEIJING NANKEDA BLUE TECHNOLOGY CO., LTD. |
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| TR01 | Transfer of patent right |