CN103675167A - Rotating disc type automatic headspace sampler - Google Patents
Rotating disc type automatic headspace sampler Download PDFInfo
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- CN103675167A CN103675167A CN201310725531.2A CN201310725531A CN103675167A CN 103675167 A CN103675167 A CN 103675167A CN 201310725531 A CN201310725531 A CN 201310725531A CN 103675167 A CN103675167 A CN 103675167A
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Abstract
The invention relates to a rotating disc type automatic headspace sampler. A sampling part adopts a rotating disc type structure; a rotating disc module consists of a driven wheel, a bearing, a sample rotating disc, a bearing cover and an upper cover mounting plate; a plurality of round holes arranged circularly are formed in the sample rotating disc, and are used for embedding sample bottles; a toothed ring positioning module consists of a correlation pipe mounting frame and a positioning toothed ring; a heating device supports heating blocks by an adjustable bracket; the heating blocks are in contact with the bottoms of heating barrels which are embedded in the round holes of the sample rotating disc; the heating barrels are provided with heat insulating sleeves. The rotating disc type automatic headspace sampler has the following benefits: through the rotating disc type automatic headspace sampler, the sample bottles can be greater than 5 ml to possess the continuous and automatic sampling function, so that the degree of automation is high; the large-sample bottle headspace sampler facilitates analyzing the same sample for several times, and can be connected with Agilent 7890 and 7820 meteorological chromatographs.
Description
Technical field
The present invention relates to a kind of oil log industry, particularly rotating disc type head space automatic sampler, is applied to
Agilent gas chromatograph, realizes preparation and sampling to drilling fluid landwaste compound sample light hydrocarbon analysis.
Background technology
At present, domestic most well logging company has all adopted Agilent gas chromatograph to carry out light hydrocarbon analysis, simultaneously standard sampling and analytical standard.The compound sample of drilling fluid and landwaste is chosen in requirement, and more than sample bottle 100ml, sampling amount accounts for sample bottle volume 2/3.Need to take static headspace gas sample introduction.
Existing automatic sampler is mainly used for liquid sample, and sample bottle is not more than 5ml conventionally.And large sample bottle head-space sampler does not possess continuous auto injection function, be unfavorable for replicate analysis.So need the large sample bottle head-space sampler that design automation degree is high, thereby make up the defect of prior art.
Summary of the invention
In view of the problem of above existence, the present invention proposes a kind of design proposal of the static headspace gas injector that possesses continuous auto injection function of applicable use 120ml large sample bottle, adopts rotating disc type auto injection structure, makes every effort to make equipment to have following characteristics:
(1) simple in structure, easy for installation, there will not be the problem of broken needle, simultaneously without sampling pump.
(2) applicable to the sample bottle of 120ml, for the light hydrocarbon analysis of the compound sample of drilling fluid and landwaste.
(3) sampling amount is less, is no more than 1 milliliter, is beneficial to the repeatedly analysis of same sample.
(4) can connect Agilent 7890,7820 gas chromatographs.
The present invention realizes by such technical scheme: rotating disc type Agilent head space automatic sampler, comprise sampling part and sample introduction part, it is characterized in that, described sampling part adopts rotary-disk type structure, comprise base plate, electric machine assembly, main shaft assembly, rotary disc assembly, sampling assemble, ring gear positioning component, heating arrangement, sample bottle and thermotank, sampling part is usingd electronic-control box as pedestal fixing and that install;
Sampling part base plate is fixed on electronic-control box, usings base plate as supporter, and the motor rack of plane distribution fixed electrical machinery assembly on it is, the main shaft holder of main shaft assembly and the adjustable support of heating arrangement;
Electric machine assembly be take motor rack as support, and motor rack is arranged on the main shaft holder outside of main shaft assembly, and motor is fixed on planar underside on motor rack, and motor shaft extends plane on motor rack, and the axle head of motor shaft is driving wheel fixedly; The engaged wheel engagement of driving wheel and rotary disc assembly;
Main shaft is installed in the main shaft holder of main shaft assembly, and the outside dimension of main shaft is reduction successively from the bottom to top, comprises altogether 5 grades of pillow blocks;
The bearing of rotary disc assembly is installed on the first order pillow block of main shaft, with the second level pillow block that is main shaft along same plane on bearing, packing ring A is installed on the pillow block of the second level; Packing ring A top is upper cover installing plate, and internal diameter and the main shaft of upper cover installing plate are fixed, and with main shaft, rotate;
The top of upper cover installing plate is packing ring B;
The top of packing ring B is the sample bottle postive stop baffle of sampling assemble;
The top of sample bottle postive stop baffle is fastening swivel nut;
The top of fastening swivel nut is cylinder arm;
The top of cylinder arm is nut;
The sample bottle postive stop baffle of sampling assemble, its internal diameter and main shaft are slidably connected, and with main shaft, do not rotate;
Its internal diameter of cylinder arm and main shaft are slidably connected, and with main shaft, do not rotate;
Rotary disc assembly is by engaged wheel, bearing, sample rotating disk, bearing cap. and upper cover installing plate forms; Several circular holes that are processed with circular arrangement on sample rotating disk, circular hole is used for embedding sample bottle;
Sampling assemble is comprised of sample bottle postive stop baffle, cylinder arm, pin folder, sampling probe and cylinder A;
Ring gear positioning component is comprised of correlation pipe erecting frame and location ring gear;
Heating arrangement supports heat block by adjustable support, and heat block contact with the thermotank bottom being inlaid in the circular hole of sample rotating disk, and thermotank, with collet, is used to sample to heat;
Described sample introduction partly comprises sample introduction assembly, four-way changeover module, the assembly of sample introduction part using analytical equipment as the pedestal of fixing and installing, cabinet inside comprises light hydrocarbon analysis instrument;
Sample introduction assembly comprises that sample injects pin, cylinder B, guide pillar and cylinder C;
Sampling part is placed on analyzer left side, and sample introduction is partly placed in the top of analytical equipment, and sampling probe inserts sample bottle sampling; Between sampling probe and sample introduction mechanism, by silica gel hose, be connected, by sample introduction mechanism, sample injected to analytical equipment.
Beneficial effect of the present invention: by rotating disc type head space automatic sampler, make sample bottle can be greater than 5ml, and possess continuous auto injection function, be beneficial to replicate analysis, automaticity is high, this large sample bottle head-space sampler, it has following characteristics:
(5) simple in structure, easy for installation, there will not be the problem of broken needle, simultaneously without sampling pump.
(6) applicable to the sample bottle of 120ml, for the light hydrocarbon analysis of the compound sample of drilling fluid and landwaste.
(7) sampling amount is less, is no more than 1 milliliter, is beneficial to the repeatedly analysis of same sample.
(8) can connect Agilent 7890,7820 gas chromatographs.
Thereby make up the defect of prior art.
Accompanying drawing explanation
Fig. 1 is rotating disc type head space automatic sampler cut-open view;
Fig. 2 is rotating disc type head space automatic sampler axonometric drawing A;
Fig. 3 is rotating disc type head space automatic sampler axonometric drawing B;
Fig. 4 is rotating disc type head space automatic sampler front view;
Fig. 5 is rotating disc type head space automatic sampler side view
Fig. 6 is rotating disc type head space automatic sampler vertical view;
Fig. 7 four-way changeover module figure;
Fig. 8 control flow chart.
In figure: 1. sampling part, 2. sample introduction part, 3. electronic-control box, 4. analytical equipment; 11. base plates, 12. electric machine assemblies, 13. main shaft assemblies, 14. rotary disc assemblies, 15. sampling assembles, 16. ring gear positioning components, 17. heating arrangements, 18. sample bottles, 19. thermotanks with collet, 12-1. motor rack, 12-2. motor, 12-3. driving wheel; 13-1. main shaft holder, 13-2. main shaft, 13-3. packing ring A; 13-4. packing ring B, 13-5. packing ring C, the fastening swivel nut of 13-6., 13-7. nut; 14-1. engaged wheel, 14-2. bearing, 14-3. sample rotating disk, 14-4. bearing cap; 14-5. upper cover installing plate; 15-1. sample bottle postive stop baffle, 15-2. cylinder arm, 15-3. pin folder, 15-4. sampling probe, 15-5. cylinder A; 16-1. correlation pipe erecting frame, 16-2. locates ring gear; 17-1. adjustable support; 21-1. sample injects pin, 21-2. cylinder B, 21-3. guide pillar, 21-4. cylinder C;
[0016]sample injects pin 21-1, sample injects pin 21-1, cylinder B21-2 and cylinder C21-4.
Embodiment
For a more clear understanding of the present invention, describe in conjunction with the accompanying drawings and embodiments the present invention in detail:
As shown in Figures 1 to 8, rotating disc type Agilent head space automatic sampler, comprises sampling part 1 and sample introduction part 2;
Sampling part 1 adopts rotary-disk type structure, comprise base plate 11, electric machine assembly 12, main shaft assembly 13, rotary disc assembly 14, sampling assemble 15, ring gear positioning component 16, heating arrangement 17, sample bottle 18 and thermotank 19, sampling part 1 is usingd electronic-control box 3 as pedestal fixing and that install;
Sampling part 1 base plate 11 is fixed on electronic-control box 3, usings base plate 11 as supporter, and the motor rack 12-1 of plane distribution fixed electrical machinery assembly 12 on it is, the adjustable support 17-1 of the main shaft holder 13-1 of main shaft assembly 13 and heating arrangement 17;
Electric machine assembly 12 be take motor rack 12-1 as support, motor rack 12-1 is arranged on the main shaft holder 13-1 outside of main shaft assembly 13, motor 12-2 is fixed on the upper planar underside of motor rack 12-1, and motor shaft extends the upper plane of motor rack 12-1, and the axle head of motor shaft is driving wheel 12-3 fixedly; The engaged wheel 14-1 engagement of driving wheel 12-3 and rotary disc assembly 14;
Main shaft 13-2 is installed in the main shaft holder 13-1 of main shaft assembly 13, and the outside dimension of main shaft 13-2 is reduction successively from the bottom to top, comprises altogether 5 grades of pillow blocks;
The bearing 14-2 of rotary disc assembly 14 is installed on the first order pillow block of main shaft 13-2, and upper with bearing 14-2 is the second level pillow block of main shaft 13-2 along same plane, and packing ring A13-3 is installed on the pillow block of the second level; Packing ring A13-3 top is upper cover installing plate 14-5, and internal diameter and the main shaft 13-2 of upper cover installing plate 14-5 fix, and with main shaft 13-2, rotate;
The top of upper cover installing plate 14-5 is packing ring B13-4;
The top of packing ring B13-4 is the sample bottle postive stop baffle 15-1 of sampling assemble 15;
The top of sample bottle postive stop baffle 15-1 is fastening swivel nut 13-6;
The top of fastening swivel nut 13-6 is cylinder arm 15-2;
The top of cylinder arm 15-2 is nut 13-7;
The sample bottle postive stop baffle 15-1 of sampling assemble 15, its internal diameter and main shaft 13-2 are slidably connected, and with main shaft 13-2, do not rotate;
Its internal diameter of cylinder arm 15-2 and main shaft 13-2 are slidably connected, and with main shaft 13-2, do not rotate;
Rotary disc assembly 14 is comprised of engaged wheel 14-1, bearing 14-2, sample rotating disk 14-3, bearing cap 14-4. upper cover installing plate 14-5; Several circular holes that are processed with circular arrangement on sample rotating disk 14-3, circular hole is used for embedding sample bottle 18;
Sampling assemble 15 is comprised of sample bottle postive stop baffle 15-1, cylinder arm 15-2, pin folder 15-3, sampling probe 15-4 and cylinder A15-5;
Ring gear positioning component 16 is comprised of correlation pipe erecting frame 16-1 and location ring gear 16-2;
Heating arrangement 17 supports heat block 17-2 by adjustable support 17-1, and heat block 17-2 contacts with thermotank 19 bottoms that are inlaid in the circular hole of sample rotating disk 14-3, and thermotank 19, with collet, is used to sample to heat;
Described sample introduction part 2 comprises sample introduction assembly 21, four-way changeover module 22, the assembly of sample introduction part 2 using analytical equipment 4 as the pedestal of fixing and installing, cabinet inside comprises light hydrocarbon analysis instrument;
Sample introduction assembly 21 comprises that sample injects pin 21-1, cylinder B21-2, guide pillar 21-3 and cylinder C21-4;
Sampling part 1 is placed on analyzer left side, and sample introduction part 2 is placed in the top of analytical equipment 4, and sampling probe 15-4 inserts sample bottle 18 samplings;
Between sampling probe 15-4 and sample introduction mechanism, by silica gel hose, be connected, by sample introduction mechanism, sample injected to analytical equipment 4.
Circuit design of the present invention has four-way switch amount, two-way A/D, a circuit temperature-controlling output, USB communication.
Four switching values, control respectively sampling needle, entry needle, the enabling signal output of the action of rotary valve and Agilent gas chromatograph.Two-way A/D detects respectively the temperature of sample disc and the analog output that chromatograph detects data.
The serial sampling sample disc that has part ownership, the rotation of sample disc is by step motor control, and the heating arrangement under sample disc is positioned at the previous sample cis-position of sampling needle.
Sample introduction part is comprised of a four-way valve and sample pin, and both cooperations complete sample introduction and the work of pipeline purging.
In order to reduce as far as possible dead volume before post, pipeline adopts capillary stainless-steel tube completely.
Workflow: receive after startup command, stepper motor drives sample disc to rotate, whether sampling needle below has photoelectric correlated cell to be used for judgement sample bottle in place.Once sample bottle is in place, sampling needle thrusts sample bottle, and entry needle draw samples gas, then switches rotary valve, sample injection.Sample introduction is complete, and enabling signal notice chromatograph starts.Last rotary valve switches back original state, and entry needle is twitched and purged.
The parallel analyzer left side that is placed on of sampling mechanism, sample introduction mechanism props up the top of vertical analytical equipment and fine needle is inserted in the sample inlet of analytical equipment, then with a silica gel hose, connect sampling mechanism and sample introduction mechanism, fine needle is connected with silica gel hose with interface, so just completes the connection work of equipment set.
Motion principle explanation:
Thereby the sample disc of sampling mechanism is to drive engaged wheel to drive whole disc rotary by electric machine rotation driving wheel, allows each sample bottle sample in turn below the position of sampling probe, and the location of each sample disc is to be calibrated by location ring gear and photoelectric tube.
When a tooth crosscut of location ring gear is crossed between the induction zone of photoelectric tube, at this moment motor will stop operating and carry out action below, when one be to have moved after, send again instruction and allow electric machine rotation, while forwarding next tooth to, motor stops, and so by that analogy, completes altogether the location of 12 bottles.
Sample introduction mechanism principle of work: realize sampling probe and carry out the conversion of sample collection and sample injection from sample bottle.By cylinder reciprocating action four-way valve have two states, when cylinder ejector state, the interface A of four-way valve and D connect, interface B and C connection.Now, when the broken sample bottle of acupuncture of sampling mechanism, the sample injector pull sample gas on sample introduction mechanism, is inhaled into sample injector by the sample bottle on the rotating disk of sampling mechanism, four-way valve, after sampling.Host computer provides instruction, and four-way valve cylinder is regained and now can be made the direction of four-way internal interface UNICOM change.Now interface A communicates with B, and interface C communicates with D, and under this state, the interior sample gas that host computer sends instruction sampling probe again will be injected into vaporizer, has so just formed the action of a set of complete sampling and sample introduction.
Claims (1)
1. rotating disc type Agilent head space automatic sampler, comprise sampling part (1) and sample introduction part (2), it is characterized in that, described sampling part (1) adopts rotary-disk type structure, comprise base plate (11), electric machine assembly (12), main shaft assembly (13), rotary disc assembly (14), sampling assemble (15), ring gear positioning component (16), heating arrangement (17), sample bottle (18) and thermotank (19), sampling part (1) is usingd electronic-control box (3) as pedestal fixing and that install;
Sampling part (1) base plate (11) is fixed on electronic-control box (3), using base plate (11) as supporter, and the motor rack (12-1) of plane distribution fixed electrical machinery assembly (12) on it is, the adjustable support (17-1) of the main shaft holder (13-1) of main shaft assembly (13) and heating arrangement (17);
Electric machine assembly (12) be take motor rack (12-1) as supporting, motor rack (12-1) is arranged on main shaft holder (13-1) outside of main shaft assembly (13), motor (12-2) is fixed on the upper planar underside of motor rack (12-1), motor shaft extends the upper plane of motor rack (12-1), and the axle head of motor shaft is driving wheel (12-3) fixedly; Driving wheel (12-3) meshes with the engaged wheel (14-1) of rotary disc assembly (14);
Main shaft (13-2) is installed in the main shaft holder (13-1) of main shaft assembly (13), and the outside dimension of main shaft (13-2) is reduction successively from the bottom to top, comprises altogether 5 grades of pillow blocks;
The bearing (14-2) of rotary disc assembly (14) is installed on the first order pillow block of main shaft (13-2), and upper with bearing (14-2) is the second level pillow block of main shaft (13-2) along same plane, and packing ring A(13-3 is installed on the pillow block of the second level); Packing ring A(13-3) top is upper cover installing plate (14-5), and the internal diameter of upper cover installing plate (14-5) and main shaft (13-2) are fixing, with main shaft (13-2), rotate;
The top of upper cover installing plate (14-5) is packing ring B(13-4);
Packing ring B(13-4) top is the sample bottle postive stop baffle (15-1) of sampling assemble (15);
The top of sample bottle postive stop baffle (15-1) is fastening swivel nut (13-6);
The top of fastening swivel nut (13-6) is cylinder arm (15-2);
The top of cylinder arm (15-2) is nut (13-7);
The sample bottle postive stop baffle (15-1) of sampling assemble (15), its internal diameter and main shaft (13-2) are slidably connected, and with main shaft (13-2), do not rotate;
Its internal diameter of cylinder arm (15-2) and main shaft (13-2) are slidably connected, and with main shaft (13-2), do not rotate;
Rotary disc assembly (14) is comprised of engaged wheel (14-1), bearing (14-2), sample rotating disk (14-3), bearing cap (14-4) upper cover installing plate (14-5); On sample rotating disk (14-3), be processed with several circular holes of circular arrangement, circular hole is used for embedding sample bottle (18);
Sampling assemble (15) is by sample bottle postive stop baffle (15-1), cylinder arm (15-2), pin folder (15-3), sampling probe (15-4) and cylinder A(15-5) form;
Ring gear positioning component (16) is comprised of correlation pipe erecting frame (16-1) and location ring gear (16-2);
Heating arrangement (17) supports heat block (17-2) by adjustable support (17-1), heat block (17-2) contacts with thermotank (19) bottom being inlaid in the circular hole of sample rotating disk (14-3), thermotank (19), with collet, is used to sample heating;
Described sample introduction part (2) comprises sample introduction assembly (21), four-way changeover module (22), the assembly of sample introduction part (2) using analytical equipment (4) as the pedestal of fixing and installing, cabinet inside comprises light hydrocarbon analysis instrument;
Sample introduction assembly (21) comprises that sample injects pin (21-1), cylinder B(21-2), guide pillar (21-3) and cylinder C(21-4);
Sampling part (1) is placed on analyzer left side, and sample introduction part (2) is placed in the top of analytical equipment (4), and sampling probe (15-4) inserts sample bottle (18) sampling;
Between sampling probe (15-4) and sample introduction mechanism, by silica gel hose, be connected, by sample introduction mechanism, sample injected to analytical equipment (4).
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238663A (en) * | 2017-05-04 | 2017-10-10 | 北京博赛德科技有限公司 | The system and method for residue composition after the detection burning of large volume head-space sampler |
| CN107991422A (en) * | 2017-11-22 | 2018-05-04 | 中国石油大学(北京) | Heat splits gas-chromatography solid auto injection heat and splits device |
| CN108279316A (en) * | 2018-04-17 | 2018-07-13 | 郑州克莱克特科学仪器有限公司 | A kind of headspace autosampler and its sample injection method |
| CN108535391A (en) * | 2018-04-17 | 2018-09-14 | 郑州克莱克特科学仪器有限公司 | A kind of gas chromatograph automatic headspace sample injector and automatic sampling method |
| CN109374770A (en) * | 2018-11-15 | 2019-02-22 | 杭州邦沃森生物科技有限公司 | A kind of detection method of Turtle Oil volatile component |
| CN111562239A (en) * | 2020-05-20 | 2020-08-21 | 四川大学 | Multi-position automatic photochemical steam generation device and working method thereof |
| CN114252542A (en) * | 2021-11-19 | 2022-03-29 | 贵阳学院 | Universal gas chromatography sample injector |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107238663A (en) * | 2017-05-04 | 2017-10-10 | 北京博赛德科技有限公司 | The system and method for residue composition after the detection burning of large volume head-space sampler |
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| CN109374770A (en) * | 2018-11-15 | 2019-02-22 | 杭州邦沃森生物科技有限公司 | A kind of detection method of Turtle Oil volatile component |
| CN111562239A (en) * | 2020-05-20 | 2020-08-21 | 四川大学 | Multi-position automatic photochemical steam generation device and working method thereof |
| CN111562239B (en) * | 2020-05-20 | 2021-05-11 | 四川大学 | Multi-position automatic photochemical steam generation device and working method thereof |
| CN114252542A (en) * | 2021-11-19 | 2022-03-29 | 贵阳学院 | Universal gas chromatography sample injector |
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Address after: 300450 1st floor, no.6, Haitai Huake 10th Road, Huayuan Industrial Zone, Binhai New Area, Tianjin Patentee after: TIANJIN LAND & OCEAN PETROLEUM EQUIPMENT SYSTEMS ENGINEERING Co.,Ltd. Address before: 300192 No. 16 West research road, Tianjin, Nankai District Patentee before: TIANJIN LAND & OCEAN PETROLEUM EQUIPMENT SYSTEMS ENGINEERING Co.,Ltd. |