CN101995443A - Chromatograph column box - Google Patents
Chromatograph column box Download PDFInfo
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- CN101995443A CN101995443A CN2010102872961A CN201010287296A CN101995443A CN 101995443 A CN101995443 A CN 101995443A CN 2010102872961 A CN2010102872961 A CN 2010102872961A CN 201010287296 A CN201010287296 A CN 201010287296A CN 101995443 A CN101995443 A CN 101995443A
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- post box
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Abstract
The invention relates to a chromatograph column box, comprising a column box body, a column box top cover, a direct-current fan motor arranged outside the column box body and installed at the central position of the bottom plate of the column box body, a wheel-type centrifugal fan blade arranged in the column box body, a heating device arranged at the outer side of the wheel-type centrifugal fan blade, a temperature sensor arranged at the outer side of the heating device, a chromatograph bracket arranged at the outer side of the temperature sensor, an air inlet and an air outlet which are arranged on the column box body, an air inlet valve and an air outlet valve which are arranged at the outer sides of the air inlet and the air outlet, and a step motor arranged outside the column box body and connected with the air inlet valve and the air outlet valve through a transmission rod. The chromatograph column box of the invention has the advantages of miniaturization, quick temperature rise, quick temperature reduction and easy installation of the chromatograph column, and can be applied to a portable chromatograph or a laboratory chromatograph.
Description
Technical field
The present invention relates to the gas chromatograph post case in a kind of analysis and test device field, particularly relate to a kind of miniaturization, portable gas chromatograph post case.
Background technology
Gas chromatograph is applied in various fields such as chemical industry, environmental protection, but since bulky, generally be placed on the laboratory and use.The post case of gas chromatograph accounts for more than 60% of whole gas chromatograph, wants to make gas chromatograph miniaturization, portable, just must make the chromatograph box miniaturization.The chromatograph box of miniaturization also should be inherited the advantage of conventional chromatogram post case except reducing volume, weight, power consumption greatly: big as the temperature control scope, be rapidly heated, fast cooling, temperature field evenly, to the chromatographic column homogeneous heating, be easy to temperature control, be suitable for various chromatographic columns, that chromatographic column is changed is convenient etc.
Once proposed a kind of annular chromatography post case in the prior art, this chromatograph box is by the metal fever conduction heat transfer, and heat transfer rate is slower than the air thermal convection, and metal heat transfer conducts heat evenly not as gaseous exchange.Simultaneously, this chromatograph box adopts the temperature of control metal soaking piece to control post the temperature inside the box, because the thermal inertia of metal soaking piece is big, the temperature control difficulty is big, and is not easy to realize being rapidly heated and fast cooling.
Also have a kind of miniature chromatograph box, this post case is square, mainly is heating film, chromatographic column, thermistor are installed on the bracing frame, the bracing frame material is an almag, its temperature transfer mode is mainly leaned on the heat conduction of bracing frame, and 2 fans are arranged, and quickens when being used to lower the temperature to descend.But the airflow field of this chromatograph box is not symmetrically and evenly, enter the cold air of post case can not be fully chromatographic column by bracing frame, and bracing frame stores more heat energy, its cooling-down effect is affected.The chromatographic column of this scheme, heating film are incorporate in addition, change the chromatographic column difficulty, and the selection of chromatographic column is also very limited.
This shows that above-mentioned existing chromatograph box and chromatograph obviously still have inconvenience and defective, and demand urgently further being improved in structure and use.Through constantly research, design, and after studying sample and improvement repeatedly, design the present invention who has practical value finally.
Summary of the invention
The object of the invention to solve the technical problems realizes by the following technical solutions.According to a kind of gas chromatograph post case that the present invention proposes, it comprises: the post box body; Post case top cover is arranged on described post box body top; Dc fan motor is arranged on described post box body outside, is installed in the base plate center of described post box body; Wheeled centrifugal fan blade is arranged on described post box body inside, is installed on the described dc fan motor axle; Heating arrangement is arranged on described post box body inside, and in the described wheeled centrifugal fan blade outside, is installed on the described post box body base plate; Temperature sensor is arranged on described post box body inside, and in the described heating arrangement outside, is installed on the described post box body base plate; The chromatographic column support is arranged on described post box body inside, and in the described temperature sensor outside, is installed on the described post case top cover; Air intake opening, gas outlet are arranged on the described post box body base plate, and air intake opening communicates with described post box body inside center zone, and the gas outlet communicates with the top area of described post box body; Inlet valve, air outlet valve are arranged on the outside of described inlet valve, air outlet valve; And stepper motor, be arranged on outside the described post box body, link to each other with described inlet valve, air outlet valve by drive link.
By above technical scheme as can be known, chromatograph post case of the present invention has following advantage at least:
By adopting centrifugal fan blade, heating arrangement, temperature sensor, chromatographic column support, from inside to outside be provided with, and compact the installation, thereby reduce volume, the weight of chromatograph post case according to coaxial manner.Adopt dc fan motor and small size post box body, thereby reduced power consumption.Chromatographic column is the hot air that is circulated, and chromatographic column is heated evenly, and has cushioned the influence of heater strip heating unevenness; Because be to add hot-air with heater strip, the air heat absorption capacity coefficient is little, and the post casing is long-pending little, can realize being rapidly heated, and temperature range can arrive 420 ℃.Injector, detecting device are installed on the post case top cover, open chromatograph post case by adopting post case top cover mode motionless, that the post box body is drop-down, be convenient to install chromatographic column in face of both chromatographic column can being exposed to the operator, gas circuit, the circuit that can not change injector, detecting device again connect.Described post box body has air intake opening and gas outlet, air intake opening is near the depression of motor shaft, the gas outlet communicates with the high-pressure area, top of this casing by the ventiduct that is arranged on described post box body inside, when the door of air intake opening, gas outlet is opened under Electric Machine Control, the cold air of outside can be from the air intake opening suction, release from the gas outlet, thereby realize fast cooling, can realize the control of near-ambient temperature by the aperture of controlling inlet valve and air outlet valve.Described post casing is long-pending be present post casing long-pending below 20%, save electric power more than 90%, above-mentioned every index still is expected to significantly improve through further optimization.
The present invention has purposes and application prospect widely for miniaturization, portability and the online gas chromatograph of making industry spot of gas chromatograph, and also alternative existing laboratory gas chromatograph post case has remarkable economical and social benefit simultaneously.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.
Description of drawings
Fig. 1 is the synoptic diagram of the top view of one embodiment of the invention chromatograph post case.
Fig. 2 is the synoptic diagram of the A-A cross sectional view of one embodiment of the invention chromatograph post case.
Fig. 3 is the synoptic diagram of the B-B cross sectional view of one embodiment of the invention chromatograph post case.
Fig. 4 is the schematic perspective view of the chromatograph box of one embodiment of the invention chromatograph post case.
Fig. 5 is the schematic perspective view of one embodiment of the invention post case cap assembly.
1. dc fan motor 2. dc fan motor axles 3. wheeled centrifugal fan blade 4. post box body sidewalls 5. chromatographic column support base plates 6. chromatographic column supports 7. chromatographic columns 8. heater strips 9. heat insulation sealing gaskets 10. heater strip supports 11. injectors 12. detectors 14. injector joints 15. detector joints 17. temperature sensors 18. heater strip binding posts 19. temperature sensor binding posts 20. air inlets 21. gas outlets 22. inlet valves, 23. drive links, 24. air outlet valves, 25. stepper motors, 26 post box body base plates, 27. upper top covers, 28. ventilating ducts
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, embodiment, structure, feature and the effect thereof of the chromatograph post case that foundation the present invention is proposed, describe in detail as after.
This chromatograph post case comprises: post box body 100 (as Fig. 4), post case cap assembly 200 (as Fig. 5), dc fan motor 1, wheeled centrifugal fan blade 3, heating arrangement bracing frame 10, heater strip 8, PT100 platinum resistance temperature sensor 17, air intake opening 20, gas outlet 21, inlet valve 22, air outlet valve 24, stepper motor 25 and drive link 23.As shown in Figure 4, chromatograph box casing 100 is cylindrical, cuboid or polygon prismatic, the inside surface of post box body can be different shapes with outside surface, preferable post box body is shaped as cylindrical, post box body 100 comprises lower shoe 26, sidewall 4 compositions, lower shoe 26 and sidewall 4 are made by 1 millimeters thick mirror face stainless steel plate, the middle cotton thermal insulation material of ceramic fiber of filling 20 millimeters thick.As shown in Figure 5, post case top cover 200 is used to install chromatographic column 7, by upper top cover 27, chromatographic column support base plate 5 and chromatographic column bracing frame 6 are formed, as shown in Figure 3, injector 11, detecting device 12 can be fixedly mounted on the upper top cover 27, the sample introduction end of chromatographic column 7 is connected with injector 11 by web member 14, the outflow end of chromatographic column 7 is connected with detecting device 12 by web member 15, stay column box body 100 under the operator, post case cap assembly 200 can be come out, chromatographic column 7, web member 14, web member 15 is exposed in face of the operator fully, handled easily person dismounting, chromatographic column 7 is installed.Between post box body 100 and the post case cap assembly 200 heat insulation sealing gasket 9 is arranged, in order to strengthen airtight performance.
As shown in Figure 2, wheeled centrifugal fan blade 3 is fixed on the dc fan motor axle 2, and dc fan motor 1 is fixed on the post box body base plate 26, and dc fan motor axle 2 overlaps with the inner vertical central axis of post case.
As shown in Figure 3, heating arrangement is made up of heater strip support 10 and heater strip 8, and heater strip support 10 is fixed on the post box body base plate 26, and heater strip bracing frame 10 is arranged on wheeled centrifugal fan blade 3 outsides.Heater strip 8 is fixed on the heater strip bracing frame 10, and heater strip 8 is drawn post box body 100 by the heater strip connection terminal 18 that is fixed on the post box body base plate 26.
As shown in Figure 2, air intake opening 20 is arranged on the post box body base plate 26, position near dc fan motor axle 2, and communicate with post box body 100 inside, gas outlet 21 is arranged on the edge of post box body base plate 26, and communicate with the top area of post box body 100 by the ventiduct 28 of post box body inside, inlet valve 22 is arranged outside the air intake opening 20, air outlet valve 24 is arranged outside the gas outlet 21, inlet valve 22, air outlet valve 24 link to each other with stepper motor 25 by drive link 23, and the aperture of inlet valve 22, air outlet valve 24 is subjected to stepper motor 25 controls.
When driving wheeled centrifugal fan blade 3 rotations, dc fan motor 1 can near dc fan motor axle 2, form depression, form the high-pressure area at wheeled centrifugal fan blade 3 radially outer edges, to make and form circulating current in the post box body 100, this air-flow makes post box body 100 interior temperature fields even, and the hot-air that chromatographic column 7 is circulated evenly heats.Because post box body 100 volumes heat absorption capacity coefficient little, air is little, can realize the programming rate greater than 100 ℃/minute, upper temperature limit can reach 420 ℃.
Other required indispensable parts of gas chromatograph post case of the present invention adopt prior art to get final product, and do not repeat them here.
Gas chromatograph post case of the present invention is under the control of the SC6000 of Chongqing Sichuan Instrument Analyzer Co., Ltd gas chromatograph temperature controller, accuracy of temperature control reaches ± and 0.05 ℃, the temperature control scope can reach environment temperature+5～420 ℃, can realize 9 rank temperature programmes, and repeatability is better than 0.5%.Programming rate is greater than 100 ℃/minute, during cooling, from 250 ℃ to 5 ℃ of needs more than the environment temperature 2 minutes.Be better than advanced at present universal gas chromatograph index, but its volume is saved electric power more than 90% less than 20% of existing gas chromatograph volume.The present invention has purposes and application prospect widely for miniaturization, portability and the online gas chromatograph of making industry spot of gas chromatograph, has remarkable economical and social benefit.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention,, all still belong in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present invention.
Claims (9)
1. instrument chromatograph post case is characterized in that it comprises:
The post box body;
Post case top cover is arranged on described post box body top;
Fan electromotor is arranged on described post box body outside, is installed in the base plate center of described post box body;
Fan blade is arranged on described post box body inside, is installed on the described fan electromotor axle;
Heating arrangement is arranged on described post box body inside, and in the described fan blade outside, is installed on the described post box body base plate;
Temperature sensor is arranged on described post box body inside, and in the described heating arrangement outside;
The chromatographic column support is arranged on described post box body inside, and in the described temperature sensor outside, is installed on the described post case top cover;
Air intake opening and gas outlet are separately positioned on the described post box body base plate, and communicate with described post box body inside;
Inlet valve and air outlet valve are separately positioned on the outside of described air intake opening, gas outlet; And
Stepper motor is arranged on outside the described post box body, links to each other with described inlet valve, air outlet valve by drive link.
2. chromatograph post case as claimed in claim 1 is characterized in that described post box body is cylindrical, cuboid or polygon prismatic.
3. chromatograph post case as claimed in claim 1 is characterized in that fan electromotor is a dc fan motor.
4. chromatograph post case as claimed in claim 1 is characterized in that fan blade is adopted and is wheeled centrifugal fan blade.
5. chromatograph post case as claimed in claim 1 is characterized in that described air intake opening and described post box body inside center regional connectivity.
6. chromatograph post case as claimed in claim 1 is characterized in that gas outlet and described post box body inner top regional connectivity.
7. chromatograph post case as claimed in claim 1 is characterized in that other 2 the parts injectors and the detecting device of gas chromatograph, is installed in the top of described post case top cover respectively.
8. chromatograph post case as claimed in claim 1 is characterized in that described fan blade, heating arrangement, temperature sensor and chromatographic column support according to coaxial manner, from inside to outside is provided with.
9. chromatograph post case as claimed in claim 1, the mode that it is characterized in that opening chromatograph post case is that described post case top cover is motionless, described post box body moves downward, to expose chromatographic column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102872961A CN101995443A (en) | 2010-09-20 | 2010-09-20 | Chromatograph column box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102872961A CN101995443A (en) | 2010-09-20 | 2010-09-20 | Chromatograph column box |
Publications (1)
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| CN101995443A true CN101995443A (en) | 2011-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102872961A Pending CN101995443A (en) | 2010-09-20 | 2010-09-20 | Chromatograph column box |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018379A (en) * | 2012-11-23 | 2013-04-03 | 上海仪电分析仪器有限公司 | Rapid cooling structure for gas chromatograph column box |
| CN103134659A (en) * | 2011-12-05 | 2013-06-05 | 常熟卓辉光电科技有限公司 | Environment test device of fluorescent lamp |
| CN104122351A (en) * | 2013-04-24 | 2014-10-29 | 中国科学院大连化学物理研究所 | Uniform-temperature chromatographic column heating apparatus |
| CN104678032A (en) * | 2013-11-28 | 2015-06-03 | 杭州捷岛科学仪器有限公司 | Gas chromatographic column incubator |
| CN106546688A (en) * | 2015-09-21 | 2017-03-29 | 中国科学院大连化学物理研究所 | A kind of heat abstractor for portable gas chromatography column casing |
| CN106568878A (en) * | 2015-10-13 | 2017-04-19 | 中国石油天然气股份有限公司 | A method of activating a tenax sampling tube |
| CN108627603A (en) * | 2017-03-17 | 2018-10-09 | 株式会社岛津制作所 | Gas chromatograph |
| CN109001322A (en) * | 2018-08-01 | 2018-12-14 | 北京普析通用仪器有限责任公司 | A kind of gas chromatograph column oven of fast cooling |
| CN109633054A (en) * | 2018-12-31 | 2019-04-16 | 聚光科技(杭州)股份有限公司 | Chromatograph column box and its working method |
| CN111796045A (en) * | 2020-07-13 | 2020-10-20 | 杭州道宇检测技术有限公司 | Chromatographic column heating device for gas chromatograph |
| CN112630358A (en) * | 2020-12-31 | 2021-04-09 | 堀扬精密量仪(上海)有限公司 | Gas chromatograph for quantitative detection of sample |
| CN113916996A (en) * | 2020-07-10 | 2022-01-11 | 北京普析通用仪器有限责任公司 | Column oven for gas chromatograph and gas chromatograph |
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| CN2840036Y (en) * | 2005-11-24 | 2006-11-22 | 上海神开科技工程有限公司 | Side opening door chromatographic column box |
| CN101762661A (en) * | 2010-01-28 | 2010-06-30 | 靳斌 | Chromatographic column box and gas chromatographer thereof |
| CN201886009U (en) * | 2010-09-20 | 2011-06-29 | 西华大学 | Chromatograph column box |
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| JP3088606B2 (en) * | 1993-11-04 | 2000-09-18 | 株式会社堀場製作所 | Constant temperature bath |
| JP2003344376A (en) * | 2002-05-27 | 2003-12-03 | Hitachi High-Technologies Corp | Gaschromatograph |
| CN2840036Y (en) * | 2005-11-24 | 2006-11-22 | 上海神开科技工程有限公司 | Side opening door chromatographic column box |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103134659A (en) * | 2011-12-05 | 2013-06-05 | 常熟卓辉光电科技有限公司 | Environment test device of fluorescent lamp |
| CN103018379A (en) * | 2012-11-23 | 2013-04-03 | 上海仪电分析仪器有限公司 | Rapid cooling structure for gas chromatograph column box |
| CN104122351A (en) * | 2013-04-24 | 2014-10-29 | 中国科学院大连化学物理研究所 | Uniform-temperature chromatographic column heating apparatus |
| CN104678032A (en) * | 2013-11-28 | 2015-06-03 | 杭州捷岛科学仪器有限公司 | Gas chromatographic column incubator |
| CN106546688A (en) * | 2015-09-21 | 2017-03-29 | 中国科学院大连化学物理研究所 | A kind of heat abstractor for portable gas chromatography column casing |
| CN106546688B (en) * | 2015-09-21 | 2018-06-29 | 中国科学院大连化学物理研究所 | A kind of radiator for portable gas chromatography column casing |
| CN106568878A (en) * | 2015-10-13 | 2017-04-19 | 中国石油天然气股份有限公司 | A method of activating a tenax sampling tube |
| CN106568878B (en) * | 2015-10-13 | 2018-05-04 | 中国石油天然气股份有限公司 | The method activated to tenax sampling pipes |
| CN108627603A (en) * | 2017-03-17 | 2018-10-09 | 株式会社岛津制作所 | Gas chromatograph |
| US10639580B2 (en) | 2017-03-17 | 2020-05-05 | Shimadzu Corporation | Gas chromatograph device including improved heat transfer reduction to reduce detection errors |
| CN109001322A (en) * | 2018-08-01 | 2018-12-14 | 北京普析通用仪器有限责任公司 | A kind of gas chromatograph column oven of fast cooling |
| CN109633054A (en) * | 2018-12-31 | 2019-04-16 | 聚光科技(杭州)股份有限公司 | Chromatograph column box and its working method |
| CN113916996A (en) * | 2020-07-10 | 2022-01-11 | 北京普析通用仪器有限责任公司 | Column oven for gas chromatograph and gas chromatograph |
| CN113916996B (en) * | 2020-07-10 | 2023-12-15 | 北京普析通用仪器有限责任公司 | Column incubator for gas chromatograph and gas chromatograph |
| CN111796045A (en) * | 2020-07-13 | 2020-10-20 | 杭州道宇检测技术有限公司 | Chromatographic column heating device for gas chromatograph |
| CN111796045B (en) * | 2020-07-13 | 2022-06-14 | 杭州道宇检测技术有限公司 | Chromatographic column heating device for gas chromatograph |
| CN112630358A (en) * | 2020-12-31 | 2021-04-09 | 堀扬精密量仪(上海)有限公司 | Gas chromatograph for quantitative detection of sample |
| CN112630358B (en) * | 2020-12-31 | 2022-12-30 | 河北莱博瑞分析仪器有限公司 | Gas chromatograph for quantitatively detecting sample |
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Addressee: Jin Bin Document name: Notification of Passing Preliminary Examination of the Application for Invention |
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Application publication date: 20110330 |