CN101655422B - Device for recovering particles by vacuum collision method - Google Patents
Device for recovering particles by vacuum collision method Download PDFInfo
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- CN101655422B CN101655422B CN2009101700607A CN200910170060A CN101655422B CN 101655422 B CN101655422 B CN 101655422B CN 2009101700607 A CN2009101700607 A CN 2009101700607A CN 200910170060 A CN200910170060 A CN 200910170060A CN 101655422 B CN101655422 B CN 101655422B
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- Prior art keywords
- vacuum
- carrier
- collision method
- carrier platform
- recovering particles
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000002245 particle Substances 0.000 title claims abstract description 20
- 238000004140 cleaning Methods 0.000 claims abstract description 12
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 4
- 239000004744 fabric Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 239000004809 Teflon Substances 0.000 claims description 6
- 229920006362 Teflon® Polymers 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract description 15
- 230000007613 environmental effect Effects 0.000 description 5
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 229910052770 Uranium Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 229910052778 Plutonium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000001819 mass spectrum Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- OYEHPCDNVJXUIW-UHFFFAOYSA-N plutonium atom Chemical compound [Pu] OYEHPCDNVJXUIW-UHFFFAOYSA-N 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000010206 sensitivity analysis Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The invention discloses a device for recovering particles by a vacuum collision method, which comprises a vacuum pump (6), a rotor flow meter (4), a vacuum meter (3) and a particle recovery chamber (2), wherein the particle recovery chamber (2), the vacuum meter (3), the rotor flow meter (4) and the vacuum pump (6) are sequentially connected through hoses, the particle recovery chamber (2) is structurally characterized in that two ends of a cylinder (10) are respectively connected with a carrier platform (7) and an upper cover (11), a carrier (8) is arranged in the carrier platform (7), the carrier (8) is fixed through a reinforcing cover (9), the carrier platform (7) is conical, the lower part of the carrier platform is provided with an air inlet, and a gas channel (13) is uniformly formed in the circumferential direction and is communicated with the interior of the cylinder (10) through the gas channel (13). The device for recovering the particles by the vacuum collision method has the advantages of high recovery rate, good dispersibility of the recovered particles, flexibility, simple operation and easy cleaning.
Description
Technical field
The present invention relates to the particulate analysis technical field in the environmental monitoring, particularly a kind of device of recovering particles by using vacuum collision method.
Background technology
IAEA had proposed one " 93+2 " plan in 1993.The nuclear safeguards system has mainly been strengthened in " 93+2 " plan on 2 o'clock, one of them is environmental sampling (comprising wipe samples) and environmental monitoring.Particulate analysis is a high-sensitivity analysis technology in the environmental monitoring, has become the routine techniques in the nuclear safeguards environmental monitoring, and irreplaceable effect is arranged.The particulate or the sub-micron particulate that have responsive nucleic can form gasoloid and suspend for a long time in atmosphere, thereby can be spread in the environment far away.Collect these particulates, specific species is wherein carried out analysis to measure, can provide valuable information for strengthening the nuclear safeguards system.Generally adopt cleaning wiping cloth that the wiping sampling is carried out in around the nuclear facilities and inside, come acquired information by single uranium particulate on secondary ion mass spectrum (SIMS) the analysis wipe samples.
SIMS is ripe to the measuring technique of the isotope ratio of particulate, to the transfer of particulate on the cleaning wiping cloth be recycled into to accurately analyzing the committed step of uranium isotope ratio.What present stage adopted is that the supersonic oscillations method reclaims particulate, earlier the particulate sonic oscillation on the cleaning wiping cloth in heptane, again the heptane hanging drop that contains particulate to carbon plate, consolidate evaporate to dryness for 300 ℃ and be used for sims analysis.But there are two problems in this method: the one, and the recovery lower (being about 25%); The 2nd, the bad dispersibility that reclaims, a plurality of particulates are easily assembled together, are unfavorable for the analysis of single particulate.
Summary of the invention
The present invention has overcome shortcoming of the prior art, a kind of recovery height is provided, reclaims that microparticulate is good, the device of the recovering particles by using vacuum collision method of maneuverability, simple to operate, easy cleaning.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of device of recovering particles by using vacuum collision method; comprise that vacuum pump, spinner-type flowmeter, vacuum meter, particulate reclaim the chamber; particulate reclaims between chamber, vacuum meter, spinner-type flowmeter, the vacuum pump and connects successively by flexible pipe; the structure that described particulate reclaims the chamber is that the cylinder two ends are connected with carrier platform, loam cake respectively; carrier is installed in carrier platform inside; by reinforcing lid carrier is fixed; carrier platform is taper; the bottom is provided with air intake opening; circumferentially have gas passage uniformly, communicate with cylinder interior by gas passage.
The part of the air intake opening bottom contact cleaning wiping cloth of described carrier platform bottom is a horizontal surface.Described gas passage circumferentially evenly is provided with three gas passages at carrier platform.Carrier is carbon plate or silicon chip.Cover one deck conducting resinl on the carrier.Described cylinder and carrier platform are by being threaded, and the centre is provided with packing washer.Described cylinder and loam cake are by being threaded, and the centre is provided with packing washer.The cylinder material is an organic glass, and loam cake is the teflon material.Carrier platform is the teflon material.
Compared with prior art, the invention has the beneficial effects as follows: the combination that this device reclaims chamber, vacuum meter, spinner-type flowmeter by vacuum pump, particulate, particulate reclaims the chamber by cooperatively interacting between carrier, carrier platform, the reinforcing lid, make this device economy use, easy cleaning, mould design and processing are simple, are fit to produce in batches and reuse; At carrier platform gas passage is set evenly circumferentially, has improved the dispersiveness and the recovery of particulate greatly,, further improved the recovery of particulate again by on carrier, covering one deck conducting resinl by this gas passage.
Description of drawings
Fig. 1 apparatus structure synoptic diagram
Fig. 2 particulate reclaims the structure cut-open view of chamber
The synoptic diagram of Fig. 3 carrier
Particulate media 1, particulate reclaim chamber 2, vacuum meter 3, spinner-type flowmeter 4, conducting resinl 5, vacuum pump 6, carrier platform 7, carrier 8, reinforce cover 9, cylinder 10, loam cake 11, rubber washer 12, gas passage 13
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:
Be illustrated in figure 1 as structural representation of the present invention; mainly reclaiming chamber 2 by vacuum pump 6, spinner-type flowmeter 4, vacuum meter 3, particulate forms; particulate reclaims chamber 2 and is connected with vacuum meter 3 by rubber hose; vacuum meter 3 is connected with spinner-type flowmeter 4 by rubber hose, and spinner-type flowmeter 4 is connected with vacuum pump 6 by rubber hose.This device can pick up the particulate on the particulate media 1 (cleaning wiping cloth etc.), enters particulate and reclaims in the chamber 2, sticks on the conducting resinl 5 of carrier 8.
The structure cut-open view of particulate recovery chamber 2 as shown in Figure 2; particulate reclaim chamber 2 mainly by carrier platform 7, carrier 8, reinforce cover 9, cylinder 10, loam cake 11 form; carrier platform 7 and cylinder 10 be by being threaded, and seal by the rubber washer 12 with sealing effectiveness.Loam cake 11 and cylinder 10 are also by being threaded, by rubber washer 12 sealings with sealing effectiveness.The gas outlet of loam cake 11 is connected with vacuum meter 3 by rubber hose.Carrier platform 7 is taper, and the bottom is provided with air intake opening.Carrier 8 is installed in carrier platform 7 inside, reinforces cover 9 and be pressed in above the carrier 8, reinforces to cover 9 and be threaded with carrier platform 7, and then carrier 8 is fixed.After carrier 8 was fixed, the position below the edge of carrier 8 evenly was provided with gas passage 13 on the carrier platform 7, and carrier platform 7 inside are communicated with the inside of cylinder 10.Present embodiment preferably adopts three gas passages 13, and promptly carrier platform 7 is provided with a gas passage 13 at circumferential per 120 °.Carrier platform 7 is the teflon material, and its internal condition needs can be designed to place, the fixing structure of difformity carrier 8.Carrier 8 can adopt difform carbon plate or silicon chip.In order better to improve the recovery of particulate, the present invention covers one deck conducting resinl 5 on carrier 8, as shown in Figure 3.
This Unit Installation and operating process:
Shearing suitable conducting resinl 5 covers on the carrier 8; carrier 8 by conducting resinl 5 carrier platform 7 of packing into down; tighten to reinforce and cover 9; difference rotor 10 and loam cake 11; connect vacuum meter 3, spinner-type flowmeter 4 and vacuum pump 6 by rubber hose; open vacuum pump 6, the knob of regulating spinner-type flowmeter 4 is to suitable gas flow rate, and movable corpuscle reclaims chamber 2 and on cleaning wiping cloth 1 particulate above it reclaimed.After recovery is finished, close vacuum pump 6, unload carrier 8, carry out next step experimental analysis.
The present invention can reclaim the particulate on the media such as cleaning wiping cloth and nucleopore membranes.Experiment finds that this device reaches more than 48% the particulate recovery of diameter 0.5～20 μ m; improved the dispersiveness of the particulate recovery and particulate greatly; for ion microprobe condition has been created in the isotope ratio measurement of elements such as the uranium of single particulate, plutonium, improved the validity of nuclear safeguards and strengthened finding out the ability of not declaring nuclear activity.
Claims (9)
1. the device of a recovering particles by using vacuum collision method; comprise vacuum pump (6); spinner-type flowmeter (4); vacuum meter (3); particulate reclaims chamber (2); particulate reclaims chamber (2); vacuum meter (3); spinner-type flowmeter (4); vacuum pump connects successively by flexible pipe between (6); it is characterized in that; described particulate reclaim chamber (2) be cylinder (10) two ends respectively with carrier platform (7); loam cake (11) connects; carrier (8) is installed in carrier platform (7) inside; by reinforcing lid (9) that carrier (8) is fixing; carrier platform (7) is taper; the bottom is provided with air intake opening; circumferentially have gas passage (13) uniformly, communicate with cylinder (10) inside by gas passage (13).
2. the device of recovering particles by using vacuum collision method according to claim 2 is characterized in that, the part of the air intake opening bottom contact cleaning wiping cloth of described carrier platform (7) bottom is a horizontal surface.
3. the device of recovering particles by using vacuum collision method according to claim 1 is characterized in that, described gas passage (13) is for circumferentially evenly to be provided with three gas passages (13) at carrier platform (7).
4. the device of recovering particles by using vacuum collision method according to claim 1 is characterized in that, described carrier (8) is gone up and covered one deck conducting resinl (5).
5. the device of recovering particles by using vacuum collision method according to claim 1 is characterized in that, described cylinder (10) and carrier platform (7) are by being threaded, and the centre is provided with packing washer (12).
6. the device of recovering particles by using vacuum collision method according to claim 1 is characterized in that, described cylinder (10) and loam cake (11) are by being threaded, and the centre is provided with packing washer (12).
7. according to the device of each described recovering particles by using vacuum collision method in the claim 1 to 6, it is characterized in that cylinder (10) material is an organic glass, loam cake (11) is the teflon material.
8. according to the device of each described recovering particles by using vacuum collision method in the claim 1 to 6, it is characterized in that carrier platform (7) is the teflon material.
9. according to the device of each described recovering particles by using vacuum collision method in the claim 1 to 6, it is characterized in that carrier (8) is carbon plate or silicon chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101700607A CN101655422B (en) | 2009-09-02 | 2009-09-02 | Device for recovering particles by vacuum collision method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101700607A CN101655422B (en) | 2009-09-02 | 2009-09-02 | Device for recovering particles by vacuum collision method |
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| Publication Number | Publication Date |
|---|---|
| CN101655422A CN101655422A (en) | 2010-02-24 |
| CN101655422B true CN101655422B (en) | 2011-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101700607A Active CN101655422B (en) | 2009-09-02 | 2009-09-02 | Device for recovering particles by vacuum collision method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095619B (en) * | 2010-12-23 | 2012-11-28 | 中国原子能科学研究院 | Recovery method of wiped sample particles with pinus koraiensis as carrier |
| CN102095620B (en) * | 2010-12-23 | 2012-11-28 | 中国原子能科学研究院 | Method for recovering particles of wiping sample by using conductive adhesive as carrier |
| CN102768221B (en) * | 2012-08-10 | 2016-01-20 | 中国原子能科学研究院 | The measuring method of particle recovery rate |
| CN103728327A (en) * | 2013-12-18 | 2014-04-16 | 中国原子能科学研究院 | Method for measuring uranium isotope ratio in single particles |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1877295A (en) * | 2006-07-18 | 2006-12-13 | 中国原子能科学研究院 | Method for making positioning mark for particle analysis |
| CN201532324U (en) * | 2009-09-02 | 2010-07-21 | 中国原子能科学研究院 | Apparatus for recovering particles with vacuum collision method |
-
2009
- 2009-09-02 CN CN2009101700607A patent/CN101655422B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1877295A (en) * | 2006-07-18 | 2006-12-13 | 中国原子能科学研究院 | Method for making positioning mark for particle analysis |
| CN201532324U (en) * | 2009-09-02 | 2010-07-21 | 中国原子能科学研究院 | Apparatus for recovering particles with vacuum collision method |
Non-Patent Citations (1)
| Title |
|---|
| 李安利，等.核保障的微粒分析与二次离子质谱仪.《质谱学报》.2006,第27卷(第3期),173-177. * |
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|---|---|
| CN101655422A (en) | 2010-02-24 |
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