CN102565244A - Triggering device and method for sample injection port of chromatograph - Google Patents
Triggering device and method for sample injection port of chromatograph Download PDFInfo
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- CN102565244A CN102565244A CN2011104615961A CN201110461596A CN102565244A CN 102565244 A CN102565244 A CN 102565244A CN 2011104615961 A CN2011104615961 A CN 2011104615961A CN 201110461596 A CN201110461596 A CN 201110461596A CN 102565244 A CN102565244 A CN 102565244A
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- action piece
- electrode
- locating part
- elastic component
- injection port
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Abstract
The invention provides a triggering method for a sample injection port of a chromatograph, which includes the following steps: (A1) inserting the needle head of an SPME into the through hole of an acting piece and pressing downward the acting piece; (A2) enabling the acting piece to move in a limiting piece and connect with a first electrode and a second electrode after an elastic piece is deformed, as a result, the first and the second electrodes are communicated through the acting piece, so as to trigger the working of the sample injection port; and (A3) lifting the external force so as to enable the acting piece to restore to the original position under the action of the elastic piece. The triggering device and method have the advantages of simple structure and high stability, portability and universality.
Description
Technical field
The present invention relates to chromatographic injection port, particularly the flip flop equipment of chromatograph injection port and sample introduction triggering method.
Background technology
Need a trigger pip to make the instrument flow process that brings into operation, trigger pip collection during the gas chromatography sample introduction.The sample introduction trigger pip of present most gas chromatographs needs the start button on the manual triggers instrument to carry out, the different retention time repeatability variation that will cause like this with the time interval that touches the button of each sample introduction.
The Varian gas chromatograph has used the auto injection flip flop equipment, and a very long shell fragment is installed on injection port top, thereby sample introduction needle is depressed shell fragment and pressed microswitch when sample introduction; Obtain a trigger pip, trigger, need on injection port, install some complicated linkages formula parts additional though this mode can be accomplished automatic sample introduction; Bulky; More complicated, and damage inefficacy easily, be not suitable for on-the-spot portable instrument.The triggering mode more complicated that TORION company adopts uses the syringe of customization to push down probe on the PCBA plate, and probe contacts and triggers with electrode.This type requirements to syringe is relatively stricter, can only use the SPME pin sample introduction of its specific customization, and the versatility office of receiving falls into, and the electron device that triggers very easily lost efficacy under the high-temperature condition of injection port more than 200 degree.
Summary of the invention
In order to solve the deficiency in the above-mentioned prior art scheme; The invention provides a kind of simple in structure, be easy to portable, good stability, versatility good chromatograph injection port flip flop equipment, and the triggering method of a kind of good stability, chromatograph injection port that versatility is good.
The objective of the invention is to realize through following technical scheme:
A kind of flip flop equipment of chromatograph injection port, said flip flop equipment comprises:
Action piece, said action piece has the through hole that sample introduction needle is passed, and after said action piece moved in locating part, elastic component generation deformation made to conduct through said action piece between said first electrode, second electrode;
Locating part, said locating part are arranged on the said injection port;
Elastic component, an end of said elastic component connects said action piece, and the other end is fixed;
First electrode and second electrode, said first electrode and second electrode are used for when both conduct, triggering chromatographic sample introduction work.
According to above-mentioned flip flop equipment, preferably, said action piece has two bars, and said bar moves in said locating part.
According to above-mentioned flip flop equipment, preferably, the end of said bar has round platform, and the external diameter of said round platform is greater than the internal diameter of said locating part.
According to above-mentioned flip flop equipment, alternatively, said action piece has two semicircular ring, and said semicircular ring is moved in said locating part.
According to above-mentioned flip flop equipment, preferably, said elastic component is a spring, and said spring is in the said locating part and is in the periphery of said action piece.
The object of the invention also is achieved through following technical scheme:
A kind of triggering method of chromatographic sample introduction, said triggering method may further comprise the steps:
(A1) in the through hole with sample introduction needle insert action part, and push said action piece downwards;
(A2) action piece moves in locating part, and elastic component produces deformation, and action piece has connected first electrode, second electrode, and win electrode and second electrode are conducted through said action piece, thereby has triggered the work of said injection port;
(A3) remove external force, said action piece sets back under the effect of said elastic component and puts.
According to above-mentioned triggering method, preferably, said action piece has two bars, and said bar moves in said locating part.
According to above-mentioned triggering method, alternatively, the end of said bar has round platform, and the external diameter of said round platform is greater than the internal diameter of said locating part.
According to above-mentioned triggering method, preferably, said action piece has two semicircular ring, and said semicircular ring is moved in said locating part.
According to above-mentioned triggering method, preferably, said elastic component is a spring, and said spring is in the said locating part and is in the periphery of said action piece.
Compared with prior art, the beneficial effect that has of the present invention is:
1, realizes that the gas chromatography sample introduction triggers automatically, guarantees chromatographic signal trigger collection time strict conformance;
2, utilize the combination of elastic component, locating part and action piece to realize that injection port triggers, make structure simple relatively, volume is little, is easy in portable instrument, install.Dismounting also need not to dismantle flip flop equipment when safeguarding bushing pipe and liner, has avoided often moving the harmful effect that causes.Triggering has instantaneity, does not need to do other attached triggering structure again.Triggering structure can rotate arbitrarily, does not have lead to link to each other.
3, system stability is high, maintenance cost is low
Ingeniously utilize that elastic component such as spring self elastic force are flexible has realized the automatic triggering function of injection port with succinct physical construction, reduced or remitted a series of manual steps or complicated control system, safe and reliable, system stability is high, and maintenance cost is low.Greatly reduce user's purchase cost, satisfied multiple different application requirements.
4, applicability is good, can realize the sample introduction needle of different size and the triggering of SPME sample introduction, and versatility is good.
Description of drawings
With reference to accompanying drawing, disclosure of the present invention will be easier to understand.Those skilled in the art are understood that easily: these accompanying drawings only are used to illustrate technical scheme of the present invention, and are not to be intended to protection scope of the present invention is constituted restriction.Among the figure:
Fig. 1 is the basic block diagram of flip flop equipment before triggering according to the embodiment of the invention 1,3;
Fig. 2 is the basic block diagram of flip flop equipment when triggering according to the embodiment of the invention 1,3;
Fig. 3 is the process flow diagram according to the triggering method of the embodiment of the invention 1;
Fig. 4 is the benzene series thing spectrogram that records according to the flip flop equipment of the embodiment of the invention 3 and method.
Embodiment
Fig. 1-4 and following declarative description optional embodiment of the present invention how to implement with instruction those skilled in the art and reproduce the present invention.In order to instruct technical scheme of the present invention, simplified or omitted some conventional aspects.Those skilled in the art should understand that the modification or the replacement that are derived from these embodiments will be within the scope of the invention.Those skilled in the art should understand that following characteristics can make up to form a plurality of modification of the present invention in every way.Thus, the present invention is not limited to following optional embodiment, and is only limited claim and their equivalent.
Embodiment 1:
Fig. 1,2 has schematically provided the basic block diagram of flip flop equipment of the chromatograph injection port of the embodiment of the invention, and like Fig. 1, shown in 2, said flip flop equipment comprises:
Preferably, the bottom of said action piece has two bars 12,13 of being convenient to connect first electrode, second electrode, and said bar moves in said locating part 3.Alternatively, the end of said bar has round platform 14,15, and the external diameter of said round platform 14,15 is greater than the internal diameter of said locating part 3, thereby has prevented that action piece 1 from shifting out said locating part 3.
Alternatively, said action piece can also be to have two semicircular ring, and said semicircular ring is moved in said locating part, is convenient to connect said first electrode and second electrode.
Locating part 3, said locating part 3 are arranged on the said injection port 7; Preferably, said locating part adopts insulating material.
Fig. 3 has schematically provided the process flow diagram of triggering method of the chromatograph sample introduction of the embodiment of the invention, and as shown in Figure 3, said triggering method may further comprise the steps:
(A1) in the through hole with sample introduction needle insert action part, and push said action piece downwards with hand;
(A2) action piece moves in locating part, and elastic component produces deformation, and action piece has connected first electrode, second electrode, and win electrode and second electrode are conducted through said action piece, thereby has triggered the work of said injection port; Preferably, said action piece has two bars, and said bar moves in said locating part.Alternatively, the end of said bar has round platform, and the external diameter of said round platform is greater than the internal diameter of said locating part.
Alternatively, said action piece has two semicircular ring, and said semicircular ring is moved in said locating part.
Preferably, said elastic component is a spring, and said spring is in the said locating part and is in the periphery of said action piece.
(A3) remove external force, said action piece sets back under the effect of said elastic component and puts.
The benefit that reaches according to the embodiment of the invention 1 is: conducted first electrode, second electrode through action piece moving in locating part; Thereby trigger sample introduction work; Afterwards at the effect of elastic component home position next time; Visible structure is simple, and volume is little, is easy in portable instrument, use.Simple to operate, signals collecting and sample introduction triggering synchronous are carried out.
Embodiment 2:
Flip flop equipment and the application examples of sample introduction triggering method in the benzene series quality testing is surveyed according to the chromatographic injection port of the embodiment of the invention 1.In this application examples, said action piece top is a disk, has at the center of disk and is convenient to the through hole that sample introduction needle is passed, and the bottom has two semicircular ring.Elastic component adopts spring, and said spring is between action piece and the injection port, and the bottom of said spring is provided with insulating base, and this insulating base is arranged on the said injection port.Said action piece adopts copper, and locating part adopts ambroin.
The method of operation of above-mentioned triggering (being the sample introduction triggering method) is:
(A1) in the through hole with sample introduction needle insert action part, and push said action piece downwards with hand;
(A2) two of action piece semicircular ring are moved in locating part, compression spring, and two semicircular ring contact first electrode, second electrode respectively, and win electrode and second electrode are conducted through said action piece, thereby have triggered the work of said injection port;
(A3) remove external force, said action piece sets back under the effect of said spring and puts.
Embodiment 2:
Flip flop equipment and the application examples of sample introduction triggering method in the benzene series quality testing is surveyed according to the chromatographic injection port of the embodiment of the invention 1.In this application examples; Said action piece top is a disk; Have at the center of disk and to be convenient to the through hole that sample introduction needle is passed, the bottom has two bars, and an end of bar has the round platform convexity; The external diameter of said round platform is greater than the internal diameter of said locating part, thereby stopped bar being moved further in locating part.Elastic component adopts spring, and said spring housing is in the outer rim of said bar, and is in the said locating part.Said action piece adopts copper, and locating part adopts ambroin.
The method of operation of above-mentioned triggering (being the sample introduction triggering method) is:
(A1) in the through hole with sample introduction needle insert action part, and push said action piece downwards with hand;
(A2) two of action piece bars move in locating part, compression spring, and two bars contact first electrode, second electrode respectively, and win electrode and second electrode are conducted through said action piece, thereby have triggered the work of said injection port;
(A3) remove external force, said action piece sets back under the effect of said spring and puts.
Use above-mentioned flip flop equipment and triggering method to test benzene series matter sample (BTEX), sample size 0.5ul, sample concentration 0.5ug/ml.The spectrogram that repeats to obtain for six times is as shown in Figure 3.Each peak retention time data see shown in the table 1 that the retention time that from table, can find out each peak in six times are analyzed explains that all less than 0.2% this triggering method has good repeatability.
Table 1
Claims (10)
1. the flip flop equipment of a chromatograph injection port, said flip flop equipment comprises:
Action piece, said action piece has the through hole that sample introduction needle is passed, and after said action piece moved in locating part, elastic component generation deformation made to conduct through said action piece between said first electrode, second electrode;
Locating part, said locating part are arranged on the said injection port;
Elastic component, an end of said elastic component connects said action piece, and the other end is fixed;
First electrode and second electrode, said first electrode and second electrode are used for when both conduct, triggering chromatographic sample introduction work.
2. flip flop equipment according to claim 1 is characterized in that: said action piece has two bars, and said bar moves in said locating part.
3. flip flop equipment according to claim 2 is characterized in that: the end of said bar has round platform, and the external diameter of said round platform is greater than the internal diameter of said locating part.
4. flip flop equipment according to claim 1 is characterized in that: said action piece has two semicircular ring, and said semicircular ring is moved in said locating part.
5. flip flop equipment according to claim 1 is characterized in that: said elastic component is a spring, and said spring is in the said locating part and is in the periphery of said action piece.
6. the triggering method of a chromatographic sample introduction, said triggering method may further comprise the steps:
(A1) in the through hole with sample introduction needle insert action part, and push said action piece downwards;
(A2) action piece moves in locating part, and elastic component produces deformation, and action piece has connected first electrode, second electrode, and win electrode and second electrode are conducted through said action piece, thereby has triggered the work of said injection port;
(A3) remove external force, said action piece sets back under the effect of said elastic component and puts.
7. triggering method according to claim 6 is characterized in that: said action piece has two bars, and said bar moves in said locating part.
8. triggering method according to claim 7 is characterized in that: the end of said bar has round platform, and the external diameter of said round platform is greater than the internal diameter of said locating part.
9. triggering method according to claim 6 is characterized in that: said action piece has two semicircular ring, and said semicircular ring is moved in said locating part.
10. triggering method according to claim 6 is characterized in that: said elastic component is a spring, and said spring is in the said locating part and is in the periphery of said action piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110461596.1A CN102565244B (en) | 2011-12-31 | 2011-12-31 | Triggering device and method for sample injection port of chromatograph |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110461596.1A CN102565244B (en) | 2011-12-31 | 2011-12-31 | Triggering device and method for sample injection port of chromatograph |
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| CN102565244A true CN102565244A (en) | 2012-07-11 |
| CN102565244B CN102565244B (en) | 2014-10-08 |
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| CN201110461596.1A Active CN102565244B (en) | 2011-12-31 | 2011-12-31 | Triggering device and method for sample injection port of chromatograph |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605071A (en) * | 2016-02-19 | 2016-05-25 | 深圳市华星光电技术有限公司 | Capillary chromatographic column auxiliary mounting nut and capillary chromatographic column mounting method |
Citations (7)
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|---|---|---|---|---|
| JPS5716863U (en) * | 1980-06-24 | 1982-01-28 | ||
| US4374089A (en) * | 1980-05-29 | 1983-02-15 | Varian Associates, Inc. | Chromatographic accessory incorporating injection switch assembly |
| JPS6095348A (en) * | 1983-10-31 | 1985-05-28 | Shimadzu Corp | Device for detecting introduction of sample to chromatograph |
| JPS60115853A (en) * | 1983-11-29 | 1985-06-22 | Shimadzu Corp | Device for detecting introduction of sample into gas chromatograph |
| CN2160908Y (en) * | 1993-04-26 | 1994-04-06 | 中石化兰州炼油化工总厂 | Automatic starter for sample inlet |
| US5360596A (en) * | 1990-04-05 | 1994-11-01 | The Perkin-Elmer Corporation | Plunger homing mechanism for use in chromatography |
| CN202421147U (en) * | 2011-12-31 | 2012-09-05 | 聚光科技(杭州)股份有限公司 | Trigger device for sample inlet of chromatographic instrument |
-
2011
- 2011-12-31 CN CN201110461596.1A patent/CN102565244B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4374089A (en) * | 1980-05-29 | 1983-02-15 | Varian Associates, Inc. | Chromatographic accessory incorporating injection switch assembly |
| JPS5716863U (en) * | 1980-06-24 | 1982-01-28 | ||
| JPS6095348A (en) * | 1983-10-31 | 1985-05-28 | Shimadzu Corp | Device for detecting introduction of sample to chromatograph |
| JPS60115853A (en) * | 1983-11-29 | 1985-06-22 | Shimadzu Corp | Device for detecting introduction of sample into gas chromatograph |
| US5360596A (en) * | 1990-04-05 | 1994-11-01 | The Perkin-Elmer Corporation | Plunger homing mechanism for use in chromatography |
| CN2160908Y (en) * | 1993-04-26 | 1994-04-06 | 中石化兰州炼油化工总厂 | Automatic starter for sample inlet |
| CN202421147U (en) * | 2011-12-31 | 2012-09-05 | 聚光科技(杭州)股份有限公司 | Trigger device for sample inlet of chromatographic instrument |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605071A (en) * | 2016-02-19 | 2016-05-25 | 深圳市华星光电技术有限公司 | Capillary chromatographic column auxiliary mounting nut and capillary chromatographic column mounting method |
| CN105605071B (en) * | 2016-02-19 | 2017-10-24 | 深圳市华星光电技术有限公司 | Capillary chromatographic column auxiliary installs nut and capillary chromatographic column installation method |
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| CN102565244B (en) | 2014-10-08 |
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