CN106153775A - It is easy to the gas chromatograph of sample introduction - Google Patents
It is easy to the gas chromatograph of sample introduction Download PDFInfo
- Publication number
- CN106153775A CN106153775A CN201610738304.7A CN201610738304A CN106153775A CN 106153775 A CN106153775 A CN 106153775A CN 201610738304 A CN201610738304 A CN 201610738304A CN 106153775 A CN106153775 A CN 106153775A
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- CN
- China
- Prior art keywords
- sample
- bottle
- sample introduction
- union joint
- sampling device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/16—Injection
- G01N30/20—Injection using a sampling valve
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N2030/022—Column chromatography characterised by the kind of separation mechanism
- G01N2030/025—Gas chromatography
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/16—Injection
- G01N30/20—Injection using a sampling valve
- G01N2030/201—Injection using a sampling valve multiport valves, i.e. having more than two ports
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The present invention provides the gas chromatograph being easy to sample introduction, including chromatograph body, this chromatograph body is provided with injection port and outlet, described injection port is connected by sample feeding pipe a sampling device, described sampling device includes sample injection bottle, it is provided with absorbent cotton in described sample injection bottle, one end of described sample injection bottle is connected with sample feeding pipe, the other end is connected with sample introduction union joint, and the junction, two ends of sample injection bottle is equipped with sealing member, it is provided with connecting tube between described sample injection bottle and sample introduction union joint, and this connecting tube runs through whole sample introduction union joint, described sample introduction union joint is arranged in cone-shaped structure, and round nose is connected with connecting tube.This chromatograph, by arranging sampling device, is changed the structure of traditional screw thread sample feeding pipe, is connected with injector quickly and easily by sample introduction union joint, effectively reduce the operating time, it is provided that work efficiency, be beneficial to reduce cost of human resources；The sample injection bottle comprising absorbent cotton is set simultaneously, can effectively remove the impurity in sample, extend the service life of instrument.
Description
Technical field
The present invention relates to a kind of gas chromatograph, be specifically related to a kind of gas chromatograph being easy to sample introduction.
Background technology
Gas chromatograph, be a kind of component each in mixed gas is analyzed detection instrument, be widely used in oil,
The aspects such as chemical industry, biochemistry, medical and health, food industry, environmental protection.Gas chromatograph is to utilize chromatographic column first to be divided by mixture
From, then utilize detector to detect separated component out successively, it is except in addition to qualitatively and quantitatively analyzing, moreover it is possible to measure sample
Product are at physicochemical constants such as fixing partition coefficient, activity coefficient, molecular weight and the specific surface areas gone up mutually.Chromatographic use is advised
Journey, first must be passed through the carrier gas (nitrogen) of constant pressure in instrument during start, be then turned on power supply and be passed through other two auxiliary
Gas (hydrogen, air), heats up each for instrument detecting system until each system keeps constant temperature, just can carry out gas sample detection work.
The structure of existing gas chromatograph, as shown in Figure 4, including chromatograph body, described chromatograph body includes analyzing
Unit and display unit, described analytic unit includes source of the gas and controls metering device, sampling device, thermostat and chromatographic column, institute
Stating sampling device and include that six-way valve, described display unit include comparator and autographic apparatus, it is all spiral shell that sampling device is provided with
The injection port of stricture of vagina connection and outlet, there is following defect in such structure: one, on injection port, connection has diameter 2mm～3mm
Screw thread sample feeding pipe, and sample is to use the injector such as gas bladders or liquid sample steel cylinder to carry out sample introduction, screw thread sample feeding pipe with
It is difficult to connect between sample introduction container, causes operating difficulties, extend the time that staff carries out testing, reduce work efficiency, from
And increase cost of human resources, additionally, chromatograph body is not provided with filtering the impurity such as the water in sample or acid & alkali liquid,
Impurity enters the pollution after chromatograph body to the parts such as chromatographic column, quantity tube, results even in inefficacy or even the report of chromatographic column
Useless, increase the maintenance cost of instrument；Its two, the outlet of chromatograph body is only arranged to threaded port, is not provided with being correlated with
The display device after instrument can be entered by response sample, directly, intuitively can not know whether sample comes into instrument, can not
Reflect speed during sample introduction, and the washing time that sample is to quantity tube, if peak fault can not occur in instrument, just cannot sentence
Disconnected is fault or the fault of instrument itself of injector, increases maintenance difficulty, reduction work efficiency.
Summary of the invention
The deficiency existed for prior art, the present invention provides the gas chromatograph being easy to sample introduction, and this chromatograph is at sample introduction
Mouth connects the sampling device being prone to be connected with injector, and is additionally provided with water, solid particle, alkali in removing sample in sampling device
The absorbent cotton of liquid, improves work efficiency, reduces cost of human resources, the most effectively extends the service life of instrument.
In order to achieve the above object, the technical scheme that the present invention takes:
It is easy to the gas chromatograph of sample introduction, including chromatograph body, is located at the intrinsic six-way valve of chromatograph, this chromatograph
Body is provided with injection port and outlet, and described injection port is connected by sample feeding pipe a sampling device, described sampling device bag
Include hollow and transparent sample injection bottle, be provided with in described sample injection bottle and can remove the de-of the impurity such as water in sample, solid particle, alkali liquor
Fat is cotton, and one end of described sample injection bottle is connected with sample feeding pipe, the other end is connected with the sample introduction union joint being made up of acid and alkali-resistance material, and
The junction, two ends of sample injection bottle is equipped with sealing member, is provided with connecting tube and this is connected between described sample injection bottle with sample introduction union joint
Pipe runs through whole sample introduction union joint, and described sample introduction union joint arranges in cone-shaped structure and round nose is connected with connecting tube.
As optimal technical scheme, in order to direct, intuitively know whether sample comes into chromatograph body, and estimation
Speed during sample introduction, the sample washing time to quantity tube, the simultaneously convenient fault got rid of when peak can not occur in chromatograph body,
And then be conducive to improving the analysis result of experiment, the one of described six-way valve connects hole has aobvious sampling device by the first carrier gas line connection,
Described aobvious sampling device includes the anti-suck bottle being connected with the first carrier gas line, and it is built-in that this anti-suck bottle connects it by the second carrier gas line
Having the aobvious sample bottle of liquid, this aobvious sample bottle is communicated with air after being connected with outlet by the 3rd carrier gas line.
Compared with prior art, the invention have the benefit that
1, the sampling device comprising coniform sample introduction union joint is set, changes the structure of traditional screw thread sample feeding pipe, logical
Cross sample introduction union joint to be connected with injector quickly and easily, effectively reduce the operating time, it is provided that work efficiency, be beneficial to reduce people
Power resources costs；The sample injection bottle comprising absorbent cotton is set simultaneously, can effectively remove the water in sample, solid particle, alkali liquor etc. miscellaneous
Matter, effectively prevents the parts such as chromatographic column, quantity tube to be corroded, and extends the service life of instrument.
2, setting comprises the aobvious sampling device showing sample bottle equipped with liquid, directly, intuitively can know whether sample comes into instrument
Device, and speed during estimation sample introduction, the sample washing time to quantity tube, simultaneously convenient get rid of when peak can not occur in instrument
Fault, and then be conducive to improving the analysis result of experiment.
Accompanying drawing explanation
With specific embodiment, the present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of sampling device；
Fig. 3 is the structural representation of aobvious sampling device；
Fig. 4 is the structural representation of existing gas chromatograph；
Drawing reference numeral: 1, chromatograph body, 1-1, injection port, 1-2, outlet, 1-3, six-way valve, 1-4, analytic unit,
1-5, display unit, 2, sample feeding pipe, 3, sampling device, 3-1, sample injection bottle, 3-2, absorbent cotton, 3-3, sample introduction union joint, 3-4, close
Sealing, 3-5, connecting tube, 3-6, nut, 4, aobvious sampling device, 4-1, the first carrier gas line, 4-2, anti-suck bottle, 4-3, the second carrier gas
Line, 4-4, aobvious sample bottle, 4-5, liquid, 4-6, the 3rd carrier gas line.
Detailed description of the invention
One specific embodiment of the present invention is proposed as shown in Figure 1, it is simple to the gas chromatograph of sample introduction, including chromatograph body
1, described chromatograph body 1 includes that analytic unit 1-4 and display unit 1-5, described analytic unit 1-4 include source of the gas and control
Metering device processed, sampling device, thermostat and chromatographic column, described sampling device includes six-way valve 1-3, on described six-way valve 1-3
Being provided with six and connect hole, two of which connects to connect between hole has quantity tube, the sampling device of described analytic unit 1-4 to be provided with sample introduction
Mouth 1-1 and outlet 1-2, described injection port 1-1 are connected by sample feeding pipe 2 sampling device 3, this sample feeding pipe 2 and six-way valve
1-3 mono-connects hole and connects；Described sampling device 3 includes the hollow that is connected with sample feeding pipe 1 and transparent sample injection bottle 3-1, protects further
Firm being connected between card sample feeding pipe 2 and sample injection bottle 3-1, sample feeding pipe 2 is provided with the nut 3-6 for firm effect, this enforcement
Example arranges what sample injection bottle 3-1 was made up of lucite, be provided with in described sample injection bottle 3-1 can remove water in sample, solid particle,
The absorbent cotton 3-2 of the impurity such as alkali liquor, one end of described sample injection bottle 3-1 is connected with sample feeding pipe 2, the other end with by acid and alkali-resistance material system
The sample introduction union joint 3-3 become connects, and the present embodiment selects sample introduction union joint 3-3 to be made up of elastomeric material, and sample injection bottle 3-1
Junction, two ends be equipped with sealing member 3-4, it is white steel screw that the present embodiment arranges sealing member 3-4, and makes with lucite
Sample injection bottle 3-1 connect by thread seal is firm, be provided with conveying sample between described sample injection bottle 3-1 and sample introduction union joint 3-3
Connecting tube 3-5 and this connecting tube 3-5 to sample injection bottle 3-1 run through whole sample introduction union joint 3-3, described sample introduction union joint 3-3 and set
Put in cone-shaped structure and round nose is connected with connecting tube 3-5, i.e. the width of sample introduction union joint 3-3 flows to gradually along sample
Become big to arrange, it is ensured that coincide with the interior button of injector, can convenient, fast connect, it is contemplated that be when sample is by connecting tube 3-5, right
Connecting tube 3-5 has certain impulse force, it is ensured that connecting tube 3-5 is firm with sample introduction union joint 3-3 to be connected, in described connecting tube 3-5
And between sample injection bottle 3-1 and sample introduction union joint 3-3, it is provided with the nut 3-6 playing fixation.
Described six-way valve 1-3 mono-connects hole has aobvious sampling device 4, described first carrier gas line 4-1 by the first carrier gas line 4-1 connection
One end connect with the one of six-way valve 1-3 that hole is connected, the other end extends the outer surface of chromatograph body 1, described aobvious sampling device 4 wraps
Include and be positioned at the anti-suck bottle 4-2 that the outer surface port of chromatograph body 1 is connected with the first carrier gas line 4-1, and the first carrier gas line 4-1
Port be positioned at anti-suck bottle 4-2 inner bottom part, this anti-suck bottle 4-2 connects it built with liquid 4-5 by the second carrier gas line 4-3
Aobvious sample bottle 4-4, described liquid 4-5 be preferably transparency liquid, be typically chosen distilled water maybe can remove discharge sour gas dense
Degree is the sodium hydroxide solution of 10%, and it is distilled water that the present embodiment arranges liquid 4-5, and the distilled water in aobvious sample bottle 4-4 accounts for former
The 50% of volume, one end of described second carrier gas line 4-3 is positioned at the top of anti-suck bottle 4-1, the other end is positioned at aobvious sample bottle 4-4
Bottom, described aobvious sample bottle 4-4 is communicated with air after being connected with outlet 1-2 by the 3rd carrier gas line 4-6, described anti-suck bottle
4-2, aobvious sample bottle 4-4 are all sealed glass jars, and bottle cap is all the sealing lid of PP material, includes silica gel sealing pad, described first
Carrier gas line 4-1, the second carrier gas line 4-3, the 3rd carrier gas line 4-6 are all the politef carrier gas lines of a diameter of 3mm；If there being sample
After entering in the sampling device of chromatograph body 1, sample first passes through anti-suck bottle 4-5 after six-way valve 1-3 and arrives aobvious sample bottle again
In 4-2, making distilled water produce bubble, otherwise bubble-free produces, and can directly, intuitively know whether sample comes into chromatograph originally
Body 1, it is also possible to speed during estimation sample introduction, the sample washing time to quantity tube, convenient chromatograph body 1 of getting rid of occurs simultaneously
It does not has fault during peak, and then be conducive to improving the analysis result of experiment.
When the present invention uses: according to the rule of operation of gas chromatograph, the carrier gas end first passed through on six-way valve 1-3 is passed through perseverance
Temperature carrier gas, until unit reaches temperature constant state in chromatograph body 1, then passes through sample to quantity tube by sampling device 3
Being rinsed, period sample enters aobvious sampling device by exhaust end, according to whether produce bubble to determine whether that sample enters instrument
In device, the size produced according to bubble and closeness can determine whether the flow velocity of sample, and the time according to producing bubble can determine whether sample
Washing time to quantity tube, to be rinsed after, continue sample introduction experiment Analysis.
Certainly, the most simply combine accompanying drawing the preferred embodiments of the disclosure to be described in detail, not with this
Limit the practical range of the present invention, the equivalence change that all principles under this invention, structure and structure are made, all should be covered by this
In the protection domain of invention.
Claims (2)
1. it is easy to the gas chromatograph of sample introduction, including chromatograph body (1), the six-way valve (1-that is located in chromatograph body (1)
3), this chromatograph body (1) is provided with injection port (1-1) and outlet (1-2), it is characterised in that: described injection port (1-1) leads to
Crossing sample feeding pipe (2) connection has a sampling device (3), described sampling device (3) to include hollow and transparent sample injection bottle (3-1), institute
Be provided with absorbent cotton (3-2) in stating sample injection bottle (3-1), one end of described sample injection bottle (3-1) is connected with sample feeding pipe (2), the other end with
The sample introduction union joint (3-3) being made up of acid and alkali-resistance material connects, and the junction, two ends of sample injection bottle (3-1) is equipped with sealing member
(3-4), it is provided with connecting tube (3-5) between described sample injection bottle (3-1) and sample introduction union joint (3-3) and this connecting tube (3-5) runs through
Whole sample introduction union joint (3-3), described sample introduction union joint (3-3) arranges in cone-shaped structure and round nose and connecting tube (3-5)
Connect.
The gas chromatograph being easy to sample introduction the most according to claim 1, it is characterised in that: the one of described six-way valve (1-3)
Connecing hole has aobvious sampling device (4), described aobvious sampling device (4) to include and the first carrier gas line (4-1) by the first carrier gas line (4-1) connection
The anti-suck bottle (4-2) connected, this anti-suck bottle (4-2) connects it built with liquid (4-5) by the second carrier gas line (4-3)
Aobvious sample bottle (4-4), this aobvious sample bottle (4-4) be connected with described outlet (1-2) by the 3rd carrier gas line (4-6) after with big gas phase
Logical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610738304.7A CN106153775A (en) | 2016-08-26 | 2016-08-26 | It is easy to the gas chromatograph of sample introduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610738304.7A CN106153775A (en) | 2016-08-26 | 2016-08-26 | It is easy to the gas chromatograph of sample introduction |
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| Publication Number | Publication Date |
|---|---|
| CN106153775A true CN106153775A (en) | 2016-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610738304.7A Pending CN106153775A (en) | 2016-08-26 | 2016-08-26 | It is easy to the gas chromatograph of sample introduction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115902053A (en) * | 2023-03-10 | 2023-04-04 | 常州磐诺仪器有限公司 | Chromatographic system and method for directly measuring NMHC and characteristic factors in environment |
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| CN201319028Y (en) * | 2008-11-21 | 2009-09-30 | 湖南省电力公司超高压管理局 | Portable sulphur hexafluoride gas chromatograph |
| CN204116293U (en) * | 2014-10-27 | 2015-01-21 | 中国石油天然气股份有限公司 | A kind of gas chromatography assists sample introduction preventing clogging up device |
| JP2015175836A (en) * | 2014-03-18 | 2015-10-05 | 島津エンジニアリング株式会社 | Needle connection device |
| CN205027711U (en) * | 2015-08-25 | 2016-02-10 | 滕州市滕海分析仪器有限公司 | Gaseous sampling device of six -way valve |
| CN206420831U (en) * | 2016-08-26 | 2017-08-18 | 中国石油天然气股份有限公司广西石化分公司 | It is easy to the gas chromatograph of sample introduction |
-
2016
- 2016-08-26 CN CN201610738304.7A patent/CN106153775A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201319028Y (en) * | 2008-11-21 | 2009-09-30 | 湖南省电力公司超高压管理局 | Portable sulphur hexafluoride gas chromatograph |
| JP2015175836A (en) * | 2014-03-18 | 2015-10-05 | 島津エンジニアリング株式会社 | Needle connection device |
| CN204116293U (en) * | 2014-10-27 | 2015-01-21 | 中国石油天然气股份有限公司 | A kind of gas chromatography assists sample introduction preventing clogging up device |
| CN205027711U (en) * | 2015-08-25 | 2016-02-10 | 滕州市滕海分析仪器有限公司 | Gaseous sampling device of six -way valve |
| CN206420831U (en) * | 2016-08-26 | 2017-08-18 | 中国石油天然气股份有限公司广西石化分公司 | It is easy to the gas chromatograph of sample introduction |
Non-Patent Citations (1)
| Title |
|---|
| 于文军: "《气相色谱操作与实践》", 30 April 2014 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115902053A (en) * | 2023-03-10 | 2023-04-04 | 常州磐诺仪器有限公司 | Chromatographic system and method for directly measuring NMHC and characteristic factors in environment |
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Application publication date: 20161123 |