CN102967530B - L absorption edge density meter - Google Patents
L absorption edge density meter Download PDFInfo
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- CN102967530B CN102967530B CN201210470798.7A CN201210470798A CN102967530B CN 102967530 B CN102967530 B CN 102967530B CN 201210470798 A CN201210470798 A CN 201210470798A CN 102967530 B CN102967530 B CN 102967530B
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Abstract
The present invention relates to a kind of X-ray transparent material that utilizes and also measure the device absorbing analysis of material.For solving the installation inconvenience existed in prior art, the problems such as maintenance, maintenance difficult, the invention provides a kind of L absorption edge density meter, comprise glove box main tank, analyze odd-side and computer data acquisition and treatment system, it is outside that analysis odd-side and computer data acquisition and treatment system are positioned at glove box main tank; Glove box main tank is connected with analysis odd-side, and the gate for isolating is housed; Analyze odd-side and comprise X source system, Qian Guanglan, sample cell, rear smooth hurdle and detector diversity system; Window is all adopted to isolate between X source system and sample cell, between sample cell and detector diversity system; Analyze odd-side and wirelessly carry out communication with computer data acquisition and treatment system.L absorption edge density meter of the present invention is easy to install, and maintenance, maintenance and X-ray tube are changed all very convenient, the corrosion-free problem of electronics component, and the requirement meeting protection.
Description
Technical field
The present invention relates to a kind of X-ray transparent material that utilizes and also measure the device absorbing analysis of material, particularly a kind of L absorption edge density meter.
Background technology
Generally adopting PUREX technique to carry out spentnuclear fuel aftertreatment in the world, for ensureing the operation that aftertreatment technology is safe, reliable, stable, mill solution compositional data must be obtained in time.Wherein the analysis task of the concentration of element such as U, Pu is the most important, and workload is also maximum.L absorption edge is analyzed as non-destructive analysis method, can widespread use in last handling process.The method has a series of feature: (1) sample is without the need to pre-service, and this is significant to high toxicity highly active aftertreatment sample; (2) selectivity is good, does not affect by element valence, and matrix effect is little; (3) analytical concentration scope is between 10-100g/L; (4) accuracy is better, and precision is high, and RSD generally can reach 0.5%.
L absorption edge spectral technique in last century the seventies start research and development, now external widespread use, but its concrete technology limits China, only has principle to describe.The experience of Ba Weier factory of the U.S. and Sa Fanna river factory shows, the analysis of L absorption edge is a kind of important aftertreatment technology U, Pu control analysis technology.China did not carry out this research in the past, did not consider the radioactivity protection problem that sample is measured yet.
In spentnuclear fuel aftertreatment field, sample is generally with radioactivity, and especially for alpha activities such as Pu, be preventing pollution, must measure under air-proof condition, this just proposes special requirement to the practical application of L absorption edge analytical equipment.Relatively more conventional method is all directly installed in glove box by analytical equipment, but glove box limited volume, inconvenience is installed.Especially adopt X-ray tube as the analytical equipment of excitaton source, it overhauls, maintenance is very difficult; Meanwhile, X-ray tube belongs to easily-consumed products, once X-ray tube is to serviceable life, changes very difficult; Detector is very accurate electronics equipment, has a large amount of radiomaterials in glove box, also has impact to its performance; In addition, in glove box, generally always there is acid gas, also can produce corrosion to the electronics component of device.
Summary of the invention
For solving the installation inconvenience that L absorption edge analytical equipment exists in the analysis of spentnuclear fuel reprocessed uranium plutonium concentration, maintenance, maintenance difficult, X-ray tube changes difficulty, detector performance is easily influenced, the problems such as electronics component is perishable, for the actual conditions of reprocessing plant, the invention provides a kind of L absorption edge density meter.Concrete technical scheme is as follows:
A kind of L absorption edge density meter, is characterized in that: comprise glove box main tank, analyze odd-side and computer data acquisition and treatment system, it is outside that analysis odd-side and computer data acquisition and treatment system are positioned at glove box main tank; Glove box main tank is connected with analysis odd-side, and the gate for isolating is housed; Analyze odd-side and comprise X source system, Qian Guanglan, sample cell, rear smooth hurdle and detector diversity system; Window is all adopted to isolate between X source system and sample cell, between sample cell and detector diversity system; Analyze odd-side and wirelessly carry out communication with computer data acquisition and treatment system.
Wherein, X source system, Qian Guanglan, sample cell, rear smooth hurdle and detector diversity system are arranged on bottom analysis odd-side is preferred; X source system adopts silver-colored target X-ray tube to be preferred; Sample cell material used is preferably polypropylene; Detector diversity system adopts SDD detector or Si-PIN detector to be preferred; Window is isolated material used and is preferably boron carbide.
Isolation between both gate between glove box main tank and analysis odd-side is convenient; Sample is divided in glove box main tank and carries out, and point sample installed is sent into analysis odd-side and measured.All adopt window to isolate between X source system and sample cell, between sample cell and detector diversity system, avoid the radiocontamination X-ray tube and detector diversity system of analyzing odd-side inside.The X ray absorptivity of preferred window isolated material boron carbide is less, does not almost affect measurement.Spectrometer part is arranged on to be analyzed bottom odd-side, and measure portion independent grounding, wirelessly carries out communication, and computer data acquisition and treatment system can be laid flexibly, is convenient to rig-site utilization.
L absorption edge density meter of the present invention is easy to install, and maintenance, maintenance and X-ray tube are changed all very convenient, and during reality uses, detector performance is unaffected, the corrosion-free problem of electronics component, and meets the requirement of protection.
Accompanying drawing explanation
Fig. 1 L absorption edge density meter structural representation
Fig. 2 analyzes odd-side structural representation
1. glove box main tank, 2. analyzes odd-side, 3. gate, 4. wireless launcher, 5. wireless receiver, 6. computer data acquisition and treatment system, 7.X light-source system, 8.X ray incidence window, light hurdle 9., 10. sample cell, light hurdle after 11., 12.X ray exit window, 13. detector diversity systems.
Embodiment
Below in conjunction with accompanying drawing, preferred forms of the present invention is described further.
Embodiment
As shown in Figure 1, a kind of L absorption edge density meter, mainly comprises glove box main tank 1, analysis odd-side 2 and computer data acquisition and treatment system 6 and forms.Analyze odd-side 2 to be made up of X source system 7, X ray incidence window 8, front smooth hurdle 9, sample cell 10, rear smooth hurdle 11, X ray exit window 12, detector diversity system 13 etc.
Wherein, X source system 7 adopts MINI-X silver target X-ray tube, and operating voltage, electric current are respectively (15-30) kV, (10-100) μ A.MINI-X silver target X-ray tube, without the need to additional cooling circulating water, reduces the volume of device greatly.Detector diversity system 13 adopts Si-PIN detector, electricity refrigeration, and resolution is better than 200eV(5.9keV).Light hurdle 9 before adding between X source system 7 and sample cell 10, adds rear smooth hurdle 11 between sample cell 10 and detector diversity system 13.Sample cell 10 adopts polypropylene material, and sampling amount is (0.5-1) mL.Sample cell 10, front smooth hurdle 9, rear smooth hurdle 11 are arranged on to be analyzed in odd-side 2, and X source system 7 and detector diversity system 13 are all outside at analysis odd-side 2.Analyze odd-side 2 and two windows are set, be respectively X ray incidence window 8 and X ray exit window 12.The axis of the center on the center on the center of X source system 7 window, the center of X ray incidence window 8, front smooth hurdle 9, the center line of sample cell 10, rear smooth hurdle 11, the center of X ray exit window 12, detector diversity system 13 point-blank.
Have the convenient isolation of gate 3 between glove box main tank 1 and analysis odd-side 2, carry out the operation such as sample packing and simple pre-service in glove box main tank 1, point sample an installed feeding is analyzed odd-side 2 and is measured.Sample cell 10 can place multiple sample, controls automatic sample-changing during measurement by computer data acquisition and treatment system 6.X source system 7 and detector diversity system 13 carry out irradiating and analyzing in sample cell 10 both sides, and all signals are controlled by computer data acquisition and treatment system 6.
X source system 7 and detector diversity system 13 carry out window isolation with boron carbide material respectively and between analysis odd-side 2, and boron carbide physical strength is high, can ensure that the radioactivity analyzing odd-side 2 inside can not stain X source system 7 and detector diversity system 13.The X ray absorptivity of boron carbide is less simultaneously, does not almost affect measurement.Detector diversity system 13 is arranged on to be analyzed bottom odd-side 2, carries out communication, be convenient to rig-site utilization by wireless launcher 4 and wireless receiver 5 with computer data acquisition and treatment system 6.
Claims (5)
1. a L absorption edge density meter, it is characterized in that: comprise glove box main tank (1), analyze odd-side (2) and computer data acquisition and treatment system (6), it is outside that analysis odd-side (2) and computer data acquisition and treatment system (6) are positioned at glove box main tank (1); Glove box main tank (1) is connected with analysis odd-side (2), and the gate (3) for isolating is housed; Analyze odd-side (2) and comprise X source system (7), Qian Guanglan (9), sample cell (10), Hou Guanglan (11) and detector diversity system (13); Window is all adopted to isolate between X source system (7) and sample cell (10), between sample cell (10) and detector diversity system (13); Analyze odd-side (2) and wirelessly carry out communication with computer data acquisition and treatment system (6); Described X source system (7) adopts MINI-X silver target X-ray tube.
2. L absorption edge density meter as claimed in claim 1, is characterized in that: X source system (7), Qian Guanglan (9), sample cell (10), Hou Guanglan (11) and detector diversity system (13) are arranged on analyzes odd-side (2) bottom.
3. L absorption edge density meter as claimed in claim 1, is characterized in that: sample cell (10) material used is polypropylene.
4. L absorption edge density meter as claimed in claim 1, is characterized in that: detector diversity system (13) adopts SDD detector or Si-PIN detector.
5. the L absorption edge density meter as described in any one of claim 1-4, is characterized in that: material used isolated by window is boron carbide.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210470798.7A CN102967530B (en) | 2012-11-20 | 2012-11-20 | L absorption edge density meter |
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| CN201210470798.7A CN102967530B (en) | 2012-11-20 | 2012-11-20 | L absorption edge density meter |
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| CN103900755B (en) * | 2014-03-14 | 2017-08-01 | 大连理工大学 | A kind of application CT measures the apparatus and method of oil gas minimum miscibility pressure |
| CN110780328A (en) * | 2019-11-05 | 2020-02-11 | 中国原子能科学研究院 | Automatic L-edge densimeter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101504380B (en) * | 2009-03-12 | 2011-03-16 | 中国原子能科学研究院 | X-ray fluorescence analyzer |
| CN201909767U (en) * | 2010-12-21 | 2011-07-27 | 纳优科技（北京）有限公司 | Energy dispersive X-ray fluorescence spectrometer for analyzing irregular samples directly |
| JP5682918B2 (en) * | 2011-01-20 | 2015-03-11 | 独立行政法人産業技術総合研究所 | Elemental quantitative analysis method and elemental quantitative analyzer by X-ray absorption edge method |
| CN203053817U (en) * | 2012-11-20 | 2013-07-10 | 中国原子能科学研究院 | L absorption edge densitometer |
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Non-Patent Citations (1)
| Title |
|---|
| 《L边界密度计的研制》;陈晨等;《中国原子能科学研究院学报》;20091231;第382页 * |
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