CN102565244B - 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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- CN102565244B CN102565244B CN201110461596.1A CN201110461596A CN102565244B CN 102565244 B CN102565244 B CN 102565244B CN 201110461596 A CN201110461596 A CN 201110461596A CN 102565244 B CN102565244 B CN 102565244B
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- elastic component
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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 injection port of chromatograph and sample introduction triggering method.
Background technology
During gas chromatographic sample introduction, need a trigger pip to make the instrument flow process that brings into operation, trigger pip collection.The sample introduction trigger pip of current most gas chromatographs needs the start button on manual triggers instrument to carry out, each sample introduction like this will cause retention time repeatability variation different from the time interval touching the button.
Varian gas chromatograph has used auto injection flip flop equipment, a very long shell fragment is installed on injection port top, thereby sample introduction needle is depressed shell fragment to press microswitch when sample introduction, obtain a trigger pip, although this mode can complete automatic sample introduction, trigger, need on injection port, install some complicated linkages formula parts additional, bulky, more complicated, and easily damage and lost efficacy, be not suitable for on-the-spot portable instrument.The triggering mode more complicated that TORION company adopts, is used the syringe of customization to push down probe on PCBA plate, probe and electrode contact and trigger.This type requirements to syringe is stricter, can only use the SPME pin sample introduction of its specific customization, and the versatility office of being subject to falls into, and the electron device triggering 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 above-mentioned prior art scheme, the invention provides a kind of simple in structure, be easy to portable, good stability, versatility good injection port of chromatograph flip flop equipment, and the triggering method of a kind of good stability, injection port of chromatograph that versatility is good.
The object of the invention is to be achieved through the following technical solutions:
A flip flop equipment for injection port of chromatograph, described flip flop equipment comprises:
Action piece, described action piece has the through hole that sample introduction needle is passed, and after described action piece is mobile in locating part, elastic component generation deformation, makes by described action piece, to conduct between described the first electrode, the second electrode;
Locating part, described locating part is arranged on described injection port;
Elastic component, one end of described elastic component connects described action piece, and the other end is fixed;
The first electrode and the second electrode, described the first electrode and the second electrode for triggering chromatographic sample introduction work when both conduct.
According to above-mentioned flip flop equipment, preferably, described action piece has two bars, and described bar moves in described locating part.
According to above-mentioned flip flop equipment, preferably, the end of described bar has round platform, and the external diameter of described round platform is greater than the internal diameter of described locating part.
According to above-mentioned flip flop equipment, alternatively, described action piece has two semicircular ring, and described semicircular ring is moved in described locating part.
According to above-mentioned flip flop equipment, preferably, described elastic component is spring, the periphery of described spring in described locating part and in described action piece.
Object of the present invention is also achieved by the following technical programs:
A triggering method for chromatographic sample introduction, described triggering method comprises the following steps:
(A1) by the through hole of sample introduction needle insert action part, and press described action piece downwards;
(A2) action piece moves in locating part, and elastic component produces deformation, and action piece has connected the first electrode, the second electrode, and the first electrode and the second electrode are conducted by described action piece, thereby has triggered the work of described injection port;
(A3) remove external force, described action piece sets back and puts under the effect of described elastic component.
According to above-mentioned triggering method, preferably, described action piece has two bars, and described bar moves in described locating part.
According to above-mentioned triggering method, alternatively, the end of described bar has round platform, and the external diameter of described round platform is greater than the internal diameter of described locating part.
According to above-mentioned triggering method, preferably, described action piece has two semicircular ring, and described semicircular ring is moved in described locating part.
According to above-mentioned triggering method, preferably, described elastic component is spring, the periphery of described spring in described locating part and in described action piece.
Compared with prior art, the beneficial effect that the present invention has is:
1, realize gas chromatographic sample introduction and automatically trigger, guarantee chromatographic signal trigger collection time strict conformance;
2, utilize the combination of elastic component, locating part and action piece to realize injection port triggering, make structure relatively simple, volume is little, is easy to install in portable instrument.While dismantling and safeguarding bushing pipe and liner, without dismounting flip flop equipment, avoided often moving the harmful effect causing.Triggering has instantaneity, does not need to do other attached trigger architecture again.Trigger architecture can rotate arbitrarily, does not have wire to be connected.
3, system stability is high, maintenance cost is low
The ingenious elastic component that utilizes has been realized the automatic Trigger Function of injection port as spring self elastic telescoping and succinct physical construction, has reduced or remitted a series of manual steps or complicated control system, and safe and reliable, system stability is high, and maintenance cost is low.Greatly reduce user's purchase cost, met multiple different application demand.
4, applicability is good, can realize the sample introduction needle of different size and the triggering of SPME sample introduction, and versatility is good.
Accompanying drawing explanation
With reference to accompanying drawing, disclosure of the present invention will be easier to understand.Those skilled in the art hold intelligible: these accompanying drawings are only for illustrating technical scheme of the present invention, and are not intended to protection scope of the present invention to be construed as limiting.In figure:
Fig. 1 is the basic block diagram before triggering according to the flip flop equipment of the embodiment of the present invention 1,3;
Fig. 2 is the basic block diagram when triggering according to the flip flop equipment of the embodiment of the present invention 1,3;
Fig. 3 is according to the process flow diagram of the triggering method of the embodiment of the present invention 1;
Fig. 4 is the benzene homologues spectrogram recording according to the flip flop equipment of the embodiment of the present invention 3 and method.
Embodiment
Fig. 1-4 and following declarative description optional embodiment of the present invention to instruct those skilled in the art how to implement and to reproduce the present invention.In order to instruct technical solution of the present invention, simplified or omitted some conventional aspects.Those skilled in the art should understand that be derived from the modification of these embodiments or replace will be within the scope of the invention.Those skilled in the art should understand that following characteristics can combine 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 only by claim and their equivalent, is limited.
Embodiment 1:
Fig. 1,2 has schematically provided the basic block diagram of flip flop equipment of the injection port of chromatograph of the embodiment of the present invention, and as shown in Figure 1, 2, described flip flop equipment comprises:
Action piece 1, described action piece 1 has the through hole 11 that sample introduction needle is passed, and when 1 of described action is after the interior movement of locating part 3, there are deformation in elastic component 2,6, described the first electrode 4,8, the second electrode are conducted, as shown in Figure 2 by described action piece 1; Described action piece 1 adopts conductive material, as metal.
Preferably, the bottom of described action piece has two bars 12,13 of being convenient to connect the first electrode, the second electrode, and described bar is in the interior motion of described locating part 3.Alternatively, the end of described bar has round platform 14,15, and the external diameter of described round platform 14,15 is greater than the internal diameter of described locating part 3, thereby has prevented that action piece 1 from shifting out described locating part 3.
Alternatively, described action piece can also be to have two semicircular ring, and described semicircular ring is moved in described locating part, is convenient to connect described the first electrode and the second electrode.
Locating part 3, described locating part 3 is arranged on described injection port 7; Preferably, described locating part adopts insulating material.
Elastic component 2,6, one end of described elastic component 2,6 connects described action piece 1, and the other end is fixed; Preferably, described elastic component is spring, the periphery of described spring in described locating part and in described action piece; Can also be arranged between described action piece and injection port.
The first electrode 4 and the second electrode 8, described the first electrode and the second electrode for triggering chromatographic sample introduction work when both conduct.Further, in described the first electrode, the second electrode one side, insulating electrode mounting blocks 5 is also set, this mounting blocks is on described injection port.
Fig. 3 has schematically provided the process flow diagram of triggering method of the chromatograph sample introduction of the embodiment of the present invention, and as shown in Figure 3, described triggering method comprises the following steps:
(A1) by the through hole of sample introduction needle insert action part, and with hand, press described action piece downwards;
(A2) action piece moves in locating part, and elastic component produces deformation, and action piece has connected the first electrode, the second electrode, and the first electrode and the second electrode are conducted by described action piece, thereby has triggered the work of described injection port; Preferably, described action piece has two bars, and described bar moves in described locating part.Alternatively, the end of described bar has round platform, and the external diameter of described round platform is greater than the internal diameter of described locating part.
Alternatively, described action piece has two semicircular ring, and described semicircular ring is moved in described locating part.
Preferably, described elastic component is spring, the periphery of described spring in described locating part and in described action piece.
(A3) remove external force, described action piece sets back and puts under the effect of described elastic component.
The benefit reaching according to the embodiment of the present invention 1 is: moving by action piece in locating part conducted the first electrode, the second electrode, thereby trigger sample introduction work, afterwards at the effect of elastic component home position next time, visible structure is simple, volume is little, is easy to use in portable instrument.Simple to operate, signals collecting and sample introduction triggering synchronous are carried out.
Embodiment 2:
The application examples in benzene homologues detects according to the flip flop equipment of the chromatographic injection port of the embodiment of the present invention 1 and sample introduction triggering method.In this application examples, described action piece top is a disk, at the center of disk, has and is convenient to the through hole that sample introduction needle is passed, and bottom has two semicircular ring.Elastic component adopts spring, and described spring is between action piece and injection port, and the bottom of described spring arranges insulating base, and this insulating base is arranged on described injection port.Described action piece adopts copper, and locating part adopts ambroin.
The method of operation of above-mentioned triggering (being sample introduction triggering method) is:
(A1) by the through hole of sample introduction needle insert action part, and with hand, press described action piece downwards;
(A2) two of action piece semicircular ring are moved in locating part, Compress Spring, and two semicircular ring contact respectively the first electrode, the second electrode, and the first electrode and the second electrode are conducted by described action piece, thereby have triggered the work of described injection port;
(A3) remove external force, described action piece sets back and puts under the effect of described spring.
Embodiment 2:
The application examples in benzene homologues detects according to the flip flop equipment of the chromatographic injection port of the embodiment of the present invention 1 and sample introduction triggering method.In this application examples, described action piece top is a disk, at the center of disk, have and be convenient to the through hole that sample introduction needle is passed, bottom has two bars, and one end of bar has round platform projection, the external diameter of described round platform is greater than the internal diameter of described locating part, thereby has stopped bar being moved further in locating part.Elastic component adopts spring, and described spring housing is in the outer rim of described bar, and in described locating part.Described action piece adopts copper, and locating part adopts ambroin.
The method of operation of above-mentioned triggering (being sample introduction triggering method) is:
(A1) by the through hole of sample introduction needle insert action part, and with hand, press described action piece downwards;
(A2) two of action piece bars move in locating part, Compress Spring, and two bars contact respectively the first electrode, the second electrode, and the first electrode and the second electrode are conducted by described action piece, thereby have triggered the work of described injection port;
(A3) remove external force, described action piece sets back and puts under the effect of described spring.
Use above-mentioned flip flop equipment and triggering method to test benzene homologues sample (BTEX), sample size 0.5ul, sample concentration 0.5ug/ml.Repeat the spectrogram that obtains for six times as shown in Figure 3.Each peak retention time data are shown in Table 1, and in six times are analyzed, the retention time at each peak is all less than 0.2% as can be seen from the table, illustrates that this triggering method has good repeatability.
Table 1
Claims (6)
1. a flip flop equipment for injection port of chromatograph, described flip flop equipment comprises:
Action piece, described action piece has the through hole that sample introduction needle is passed, and after described action piece is mobile in locating part, elastic component generation deformation, makes by described action piece, to conduct between the first electrode, the second electrode; Described action piece has two bars or two semicircular ring, and described bar or semicircular ring are moved in locating part;
Locating part, described locating part is arranged on described injection port;
Elastic component, one end of described elastic component connects described action piece, and the other end is fixed;
The first electrode and the second electrode, described the first electrode and the second electrode for triggering chromatographic sample introduction work when both conduct.
2. flip flop equipment according to claim 1, is characterized in that: the end of described bar has round platform, and the external diameter of described round platform is greater than the internal diameter of described locating part.
3. flip flop equipment according to claim 1, is characterized in that: described elastic component is spring, the periphery of described spring in described locating part and in described action piece.
4. a triggering method for chromatographic sample introduction, described triggering method comprises the following steps:
(A1) by the through hole of sample introduction needle insert action part, and press described action piece downwards;
(A2) action piece moves in locating part, and elastic component produces deformation, and action piece has connected the first electrode, the second electrode, and the first electrode and the second electrode are conducted by described action piece, thereby has triggered the work of injection port; Described action piece has two bars or two semicircular ring, and described bar or semicircular ring are moved in locating part;
(A3) remove external force, described action piece sets back and puts under the effect of described elastic component.
5. triggering method according to claim 4, is characterized in that: the end of described bar has round platform, and the external diameter of described round platform is greater than the internal diameter of described locating part.
6. triggering method according to claim 4, is characterized in that: described elastic component is spring, the periphery of described spring in described locating part and in described 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 |
|---|---|---|---|
| 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 CN102565244A (en) | 2012-07-11 |
| CN102565244B true CN102565244B (en) | 2014-10-08 |
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| 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 |
Citations (4)
| 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 |
| 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 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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2011
- 2011-12-31 CN CN201110461596.1A patent/CN102565244B/en active Active
Patent Citations (4)
| 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 |
| 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 |
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