CN203519572U - Transmission device and gas chromatography-mass spectrometry system - Google Patents
Transmission device and gas chromatography-mass spectrometry system Download PDFInfo
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- CN203519572U CN203519572U CN201320548047.2U CN201320548047U CN203519572U CN 203519572 U CN203519572 U CN 203519572U CN 201320548047 U CN201320548047 U CN 201320548047U CN 203519572 U CN203519572 U CN 203519572U
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- transmitting device
- heating muff
- mass analyzer
- gaseous mass
- gas
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Abstract
The utility model discloses a transmission device and a gas chromatography-mass spectrometry system. The transmission device is used for connecting a gas-phase mass spectrometer and a gas-phase chromatograph and comprises a heating sleeve, a metal capillary tube penetrating in a central through hole of the heating sleeve and with two ends stretching out of the heating sleeve, and a connection flange, wherein the heating sleeve is fixed in a central hole of the connection flange, and two ends of the heating sleeve both extend out of the connection flange. In the utility model, the metal capillary tube in the gas-phase mass spectrometer shell is coated with a heating sleeve, thus the temperature of the metal capillary tube is basically kept consistent at the part close to a gas-phase mass spectrometer ion source and the part outside the gas-phase mass spectrometer shell, and the phenomenon of sample condensation in the position close to the gas-phase mass spectrometer ion source is effectively reduced; meanwhile, since the heating sleeve is relatively long, a support effect on a chromatographic column is also enhanced.
Description
Technical field
The utility model relates to a kind of transmitting device and application of gas chromatorgraphy/mass system.
Background technology
Application of gas chromatorgraphy/mass system is widely used in scientific research and biological detection analysis field, and its structure mainly comprises gas chromatograph and gaseous mass analyzer.Gas chromatograph mainly comprises the structures such as chromatographic column.Gaseous mass analyzer mainly comprises the structures such as ion gun and mass analyzer.When gas chromatograph and gaseous mass analyzer coupling, need to chromatographic column be incorporated into ion gun by transmitting device.
As shown in FIG. 1A and 1B, traditional transmitting device comprises metal capillary 1, heating muff 2 and joint flange 8.Wherein, metal capillary 1 is arranged in heating muff 2 and metal capillary 1 is stretched out at two ends, and metal capillary 1 is for wearing for chromatographic column; In heating muff 2, be provided with heating rod, the heat that heating rod produces to metal capillary 1, prevents the sample condensation in chromatographic column through heating muff 2 conduction; Joint flange 8 is fixed on an end of heating muff 2.During use, joint flange 8 is fixed on to gaseous mass analyzer 100, the other end of heating muff 2 inserts gas chromatograph 200, and chromatographic column 300 is connected in ion gun 400 through metal capillary 1.The effect of transmitting device has two, and the one, the chromatographic column 300 that supports gas chromatograph by metal capillary 1 enters into ion gun 400 inside of gaseous mass spectrum instrument; The 2nd, regulation and control mass spectrum transmission line arrives required steady temperature, and transmission line is heated evenly, and prevents sample condensation.
In above-mentioned traditional transmitting device, heating muff 2 length are short, and metal capillary 1 is exposed in the position near mass ion source 400, and temperature only depends on heat conduction to maintain, therefore metal capillary 1 does not reach set temperature value, easily in the position near mass ion source, there is sample condensation.Especially higher-boiling compound, this situation is more obvious.In addition, heating muff 2 is outer does not have insulation construction, therefore its temperature is easily subject to the impact of the temperature variation of gas chromatograph and mass ion source, is difficult to keep constant.
As shown in Figure 2, with PBDE (PBDEs), illustrate.The chemical general formula of PBDE (PBDEs) is C
12h
(0-9)br
(1-10)o, at room temperature has not volatile and feature boiling point high (310-425 ℃), and the high energy of molecular weight reaches 950.Use above-mentioned traditional transmitting device, the easy condensation of sample, causes chromatographic peak to broaden, and forms the peak of a bulge, and high boiling decabromodiphenyl oxide cannot be separated.
In the disclosed above-mentioned information of described background technology part, only for strengthening the understanding to background of the present utility model, so it can comprise the information not forming prior art known to persons of ordinary skill in the art.
Summary of the invention
An object of the present utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of transmitting device that can effectively prevent chromatographic sample condensation is provided;
An object of the present utility model is to provide a kind of application of gas chromatorgraphy/mass system that is provided with the utility model transmitting device.
Additional aspect of the present utility model and advantage will partly be set forth in the following description, and partly will from describe, become obviously, or can the acquistion by practice of the present utility model.
According to an aspect of the present utility model, the utility model discloses a kind of transmitting device, be used for connecting gaseous mass analyzer and gas chromatograph, described transmitting device comprises heating muff, is arranged in the central through hole of described heating muff and metal capillary and the joint flange that described heating muff is all stretched out at two ends.Wherein, described heating muff is fixed in the medium pore of described joint flange, and described joint flange is all extended at the two ends of described heating muff.
According to an embodiment of the present utility model, described heating muff is tapered for connecting one end of described gaseous mass analyzer.
According to an embodiment of the present utility model, described metal capillary is for connecting one end of described gaseous mass analyzer and/or stretching out described heating muff 1-5mm for connecting one end of described gas chromatograph.
According to an embodiment of the present utility model, described heating muff is provided with the longitudinal elongated slot being communicated with its central through hole, and is provided with the clamping element that can make described metal capillary and described heating muff fit tightly.
According to an embodiment of the present utility model, described transmitting device also comprises the temperature sensor of being located at described heating muff.
According to an embodiment of the present utility model, described transmitting device also comprises insulation sleeve, and muff jacket casing is located at outside described heating muff and is positioned at a side of described joint flange.
According to an embodiment of the present utility model, described transmitting device also comprises the protective jacket being sheathed on outside described insulation sleeve.
According to an embodiment of the present utility model, described protective jacket outside surface is provided with step.
According to an embodiment of the present utility model, the outer end of described protective jacket is provided with end cap, and this end cap is provided with through wires hole.
According on the other hand of the present utility model, the utility model discloses a kind of application of gas chromatorgraphy/mass system, comprise gaseous mass analyzer, gas chromatograph and the transmitting device that connects described gaseous mass analyzer and described gas chromatograph, wherein said transmitting device is transmitting device described in the utility model.The joint flange of described transmitting device is sealingly fastened in outside the housing of described gaseous mass analyzer, and described heating muff stretches into described gaseous mass analyzer and approaches the ion gun of described gaseous mass analyzer.
As shown from the above technical solution, advantage of the present utility model and good effect are: in the utility model, joint flange is all extended at the two ends of heating muff, and during use, joint flange is fixed on the housing of gaseous mass analyzer.Therefore, in the utility model, heating muff stretches in the housing of gaseous mass analyzer, that is to say, at gaseous mass analyzer housing, with interior metal capillary, also there is heating muff coated, therefore the temperature of metal capillary is consistent with the part outside gaseous mass analyzer housing substantially approaching the ionogenic part of gaseous mass analyzer, effectively reduced the phenomenon that occurs sample condensation in the position near mass ion source; Because the length of heating muff is long, also strengthened the supporting function to chromatographic column simultaneously.
Further, at heating muff, be provided with thermal insulation casing outward, be conducive to the isolated inside and outside environment of heating muff, the impact of the temperature variation that reduces gas chromatograph and mass ion source on metal capillary and interior chromatographic column thereof, thereby make metal capillary and interior chromatogram column temperature thereof keep constant, strengthened the whole constant temperature of metal capillary.
Accompanying drawing explanation
By describe its example embodiment in detail with reference to accompanying drawing, above-mentioned and further feature of the present utility model and advantage will become more obvious.
Figure 1A illustrates the structural representation of conventional transmission devices under use state;
Figure 1B illustrates A part enlarged drawing in Figure 1A;
Fig. 2 illustrates the total ion chromatogram that uses conventional transmission devices test PBDE;
Fig. 3 A illustrates the structural representation of the utility model transmitting device under use state;
Fig. 3 B illustrates B part enlarged drawing in Fig. 3 A;
Fig. 4 illustrates the stereo decomposing structural representation of the utility model transmitting device;
Fig. 5 illustrates the total ion chromatogram that uses the utility model transmitting device test PBDE.
Embodiment
Referring now to accompanying drawing, example embodiment is more fully described.Yet example embodiment can be implemented in a variety of forms, and should not be understood to be limited to embodiment set forth herein; On the contrary, provide these embodiments to make the utility model by comprehensive and complete, and the design of example embodiment is conveyed to those skilled in the art all sidedly.In figure, identical Reference numeral represents same or similar structure, thereby will omit their detailed description.
Referring to Fig. 3 A, Fig. 3 B and Fig. 4.Transmitting device of the present utility model, for connecting gaseous mass analyzer 100 and gas chromatograph 200.Transmitting device comprises metal capillary 1, heating muff 2, joint flange.
Heating muff 2 is fixed in the medium pore of joint flange 8, and joint flange 8 is all extended at the two ends of heating muff 2.Heating muff 2 is provided with heating rod jack, heating rod 3 is inserted in heating muff 2 by this heating rod jack, the heat that heating rod 3 produces conducts to heating muff 2, more further conduction is to metal capillary 1, and heating of metal kapillary 1 is to prevent chromatographic column sample condensation wherein.Certainly, the type of heating of heating muff 2 is not limited so that heating rod 3 to be set, and existing other type of heating is also applicable to the utility model.Heating muff 2 is held whole metal capillary 1 tightly, guarantees whole metal capillary 1 homogeneous heating.
Heating muff 2 is tapered for connecting one end of gaseous mass analyzer 100.Heating muff 2 is provided with the longitudinal elongated slot 21 being communicated with its central through hole, and is provided with the clamping element (not shown) that can make metal capillary 1 and heating muff 2 fit tightly.Now, can be smaller for wearing the diameter of the central through hole of metal capillary 1, after fastening with clamping element, metal capillary 1 increases thermal conduction effect with heating muff 2 close contacts, so can prevent that the central through hole of heating muff 2 from closely not affecting thermal conduction effect compared with causing greatly metal capillary 1 to contact with heating muff 2.
Further, the utility model transmitting device also comprises temperature sensor 4.Heating muff 2 is provided with a sensor jack, and temperature sensor 4 can be inserted in this sensor jack, and temperature sensor 4 also can be arranged at heating muff 2 by alternate manner certainly.Temperature sensor 4 can use traditional structure, for example, use PT100 platinum resistance as temperature sensor, realizes accurate temperature control by pid algorithm.
Further, the utility model transmitting device also comprises insulation sleeve 5, and insulation sleeve 5 is sheathed on outside heating muff 2 and is positioned at a side of joint flange 8.Insulation sleeve 5 can be made by materials such as ceramic fibers, its heat that can reduce on the one hand heating muff 2 outwards distributes, also reduced on the other hand the impact of ambient temperature on the metal capillary 1 in heating muff 2, for example, can avoid gas chromatographic column case and the impact of mass ion source temperature variation on metal capillary 1, make the temperature of metal capillary 1 in constant, prevent sample condensation.
Further, the utility model transmitting device also comprises protective jacket 6, and protective jacket 6 is sheathed on insulation sleeve 5 outside surfaces, and it can be made by materials such as aluminium, not only attractive in appearance, and has certain intensity, and insulation sleeve 5 parts such as grade in it are played to protective action.Protective jacket 6 can be connected in joint flange 8 excircles by screw etc.In order to facilitate being connected of the utility model transmitting device and gas chromatograph 200, can protective jacket 6 outside surface ring-shaped steps 61.When mounted, this ring-shaped step 61 can be connected to gas chromatograph 200 housings.The outer end of protective jacket 6 is provided with end cap 62, and this end cap 62 is provided with through wires hole 63, to facilitate the signal wire of temperature sensor 4, the various lines such as electric wire of heating rod 3 thus through wires hole 63 draw.
The utility model application of gas chromatorgraphy/mass system, comprises gaseous mass analyzer 100, gas chromatograph 200 and the transmitting device that connects gaseous mass analyzer 100 and gas chromatograph 200.Wherein transmitting device is transmitting device of the present utility model.The joint flange 8 of transmitting device is sealingly fastened in outside the housing of gaseous mass analyzer 100, and heating muff 2 stretches into described gaseous mass analyzer 100 and approaches ion gun 400; The larger end of diameter of protective jacket 6 is connected to joint flange 8 excircles, and gas chromatograph 200 is stretched in the other end.
As shown in Figure 5, with PBDE (PBDEs), illustrate.The chemical general formula of PBDE (PBDEs) is C
12h
(0-9)br
(1-10)o, at room temperature has not volatile and feature boiling point high (310-425 ℃), and the high energy of molecular weight reaches 950.Use transmitting device of the present utility model, not condensation of sample, detected peaks type is good, for high boiling decabromodiphenyl oxide, also can be good at separation.
In the utility model, heating muff 2 is lengthening near gaseous mass analyzer ion gun 400 partial-lengths, and further adopt thermal insulation casing 5 and protective jacket 6, the temperature of transmitting device that has fully guaranteed application of gas chromatorgraphy/mass system is more balanced and stable, prevent sample condensation, be conducive to improve the signal response of higher-boiling compound.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1. a transmitting device, be used for connecting gaseous mass analyzer (100) and gas chromatograph (200), described transmitting device comprises heating muff (2), is arranged in the central through hole of described heating muff (2) and metal capillary (1) and the joint flange (8) that described heating muff (2) are all stretched out at two ends, it is characterized in that, described heating muff (2) is fixed in the medium pore of described joint flange (8), and described joint flange (8) is all extended at the two ends of described heating muff (2).
2. transmitting device as claimed in claim 1, is characterized in that, described heating muff (2) is tapered for connecting one end of described gaseous mass analyzer (100).
3. transmitting device as claimed in claim 1, it is characterized in that, described metal capillary (1) is for connecting one end of described gaseous mass analyzer (100) and/or stretching out described heating muff (2) 1-5mm for connecting one end of described gas chromatograph (200).
4. transmitting device as claimed in claim 1, is characterized in that, described heating muff (2) is provided with the longitudinal elongated slot (21) being communicated with its central through hole, and is provided with the clamping element that can make described metal capillary (1) and described heating muff (2) fit tightly.
5. transmitting device as claimed in claim 1, is characterized in that, described transmitting device also comprises the temperature sensor (4) of being located at described heating muff (2).
6. the transmitting device as described in any one in claim 1-5, is characterized in that, described transmitting device also comprises insulation sleeve (5), and insulation sleeve (5) is sheathed on outside described heating muff (2) and is positioned at a side of described joint flange (8).
7. transmitting device as claimed in claim 6, is characterized in that, described transmitting device also comprises the protective jacket (6) being sheathed on outside described insulation sleeve (5).
8. transmitting device as claimed in claim 7, is characterized in that, described protective jacket (6) outside surface is provided with step (61).
9. transmitting device as claimed in claim 8, is characterized in that, the outer end of described protective jacket (6) is provided with end cap (62), and this end cap (62) is provided with through wires hole (63).
10. an application of gas chromatorgraphy/mass system, comprise gaseous mass analyzer (100), gas chromatograph (200) and connect described gaseous mass analyzer (100) and the transmitting device of described gas chromatograph (200), it is characterized in that, described transmitting device is transmitting device as claimed in any one of claims 1-9 wherein, the joint flange of described transmitting device (8) is sealingly fastened in outside the housing of described gaseous mass analyzer (100), and described heating muff (2) stretches into described gaseous mass analyzer (100) and approaches the ion gun (400) of described gaseous mass analyzer (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320548047.2U CN203519572U (en) | 2013-09-04 | 2013-09-04 | Transmission device and gas chromatography-mass spectrometry system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320548047.2U CN203519572U (en) | 2013-09-04 | 2013-09-04 | Transmission device and gas chromatography-mass spectrometry system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203519572U true CN203519572U (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320548047.2U Expired - Lifetime CN203519572U (en) | 2013-09-04 | 2013-09-04 | Transmission device and gas chromatography-mass spectrometry system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104020237A (en) * | 2014-06-24 | 2014-09-03 | 武汉矽感科技有限公司 | Improved FastGC column device capable of combination with ion mobility spectrometer |
| CN105866306A (en) * | 2016-05-27 | 2016-08-17 | 中国计量科学研究院 | Transmission line and chromatography-mass spectrometry system |
| CN106093266A (en) * | 2016-08-16 | 2016-11-09 | 中国科学院西双版纳热带植物园 | The GC EAD system of chromatographic column constant temperature transmission line and composition thereof |
| CN109243962A (en) * | 2018-09-29 | 2019-01-18 | 厦门大学 | A kind of heating device of electrospray ionization mass spectrum transfer capillary |
| CN110632233A (en) * | 2019-10-24 | 2019-12-31 | 上海裕达实业有限公司 | Constant temperature chromatographic device |
| CN115308324A (en) * | 2022-07-28 | 2022-11-08 | 天津国科医工科技发展有限公司 | Transmission line and device for combined use of gas chromatograph and mass spectrometer, temperature control transmission line and method |
-
2013
- 2013-09-04 CN CN201320548047.2U patent/CN203519572U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104020237A (en) * | 2014-06-24 | 2014-09-03 | 武汉矽感科技有限公司 | Improved FastGC column device capable of combination with ion mobility spectrometer |
| CN105866306A (en) * | 2016-05-27 | 2016-08-17 | 中国计量科学研究院 | Transmission line and chromatography-mass spectrometry system |
| CN106093266A (en) * | 2016-08-16 | 2016-11-09 | 中国科学院西双版纳热带植物园 | The GC EAD system of chromatographic column constant temperature transmission line and composition thereof |
| CN106093266B (en) * | 2016-08-16 | 2018-02-06 | 中国科学院西双版纳热带植物园 | The GC EAD systems that chromatographic column constant temperature transmission line is formed |
| CN109243962A (en) * | 2018-09-29 | 2019-01-18 | 厦门大学 | A kind of heating device of electrospray ionization mass spectrum transfer capillary |
| CN109243962B (en) * | 2018-09-29 | 2019-09-10 | 厦门大学 | A kind of heating device of electrospray ionization mass spectrum transfer capillary |
| CN110632233A (en) * | 2019-10-24 | 2019-12-31 | 上海裕达实业有限公司 | Constant temperature chromatographic device |
| CN115308324A (en) * | 2022-07-28 | 2022-11-08 | 天津国科医工科技发展有限公司 | Transmission line and device for combined use of gas chromatograph and mass spectrometer, temperature control transmission line and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |
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| CX01 | Expiry of patent term |