CN102967530A - L absorption edge density meter - Google Patents
L absorption edge density meter Download PDFInfo
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- CN102967530A CN102967530A CN2012104707987A CN201210470798A CN102967530A CN 102967530 A CN102967530 A CN 102967530A CN 2012104707987 A CN2012104707987 A CN 2012104707987A CN 201210470798 A CN201210470798 A CN 201210470798A CN 102967530 A CN102967530 A CN 102967530A
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Abstract
The invention relates to a device for analyzing a material by utilizing X-rays to penetrate through the material and measuring and absorbing the material, and particularly provides an L absorption edge density meter. The L absorption edge density meter is used for solving the problems of inconvenience for installation, difficulty in overhaul and maintenance, and the like in the prior art. The L absorption edge density meter comprises a main glove box, an auxiliary analyzing box and a computer data acquiring and processing system, wherein the auxiliary analyzing box and the computer data acquiring and processing system are positioned outside the main glove box; the main glove box is communicated with the auxiliary analyzing box and provided with a strobe used for isolation; the auxiliary analyzing box comprises an X light source system, a front diaphragm, a sample pool, a rear diaphragm and a detector multi-channel system; the isolation between the X light source system and the sample pool and between the sample pool and the detector multi-channel system is achieved by both using windows; and the auxiliary analyzing box is communicated with the computer data acquiring and processing system in a wireless way. The L absorption edge density meter disclosed by the invention has the advantages of easiness for installation, great convenience for overhaul, maintenance and X-ray tube replacement and no corrosion problem of electronics parts, and meets the requirement for protection.
Description
Technical field
The present invention relates to a kind of device that utilizes X ray permeable material and measurement to absorb analysis of material, particularly a kind of L absorption edge densitometer.
Background technology
Generally adopt in the world PUREX technique to carry out the spentnuclear fuel aftertreatment, for guaranteeing safe, reliable, the stable operation of aftertreatment technology, must in time obtain the mill solution compositional data.Wherein the analysis task of the concentration of element such as U, Pu is the most important, and workload is also maximum.The L absorption edge is analyzed as the non-destructive analysis method, can widespread use in last handling process.The method has a series of characteristics: (1) sample need not pre-service, and this is significant to the highly active aftertreatment sample of high toxicity; (2) selectivity is good, not affected by element valence, and matrix effect is little; (3) the 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 begin research and development, now widespread use abroad, but its concrete technology limits China, only has principle to describe.The experience of U.S. Ba Weier factory and Sa Fanna river factory shows that 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 of sample measurement yet.
In spentnuclear fuel aftertreatment field, sample,, must be measured under air-proof condition for preventing polluting especially for alpha activities such as Pu generally with radioactivity, and this has just proposed special requirement to the practical application of L absorption edge analytical equipment.Relatively method commonly used is that analytical equipment all directly is installed in the glove box, but the glove box volume is limited, and inconvenience is installed.Especially adopt X-ray tube as the analytical equipment of excitaton source, its maintenance, the maintenance very difficult; Simultaneously, X-ray tube belongs to easily-consumed products, in case X-ray tube to serviceable life, is changed very difficult; Detector is very accurate electronics equipment, and a large amount of radiomaterials is arranged in glove box, and is also influential to its performance; In addition, acid gas is always arranged generally in the glove box, also can produce corrosion to the electronics component of device.
Summary of the invention
The installation inconvenience that in the analysis of spentnuclear fuel reprocessed uranium plutonium concentration, exists for solving L absorption edge analytical equipment, maintenance, maintenance difficult, X-ray tube is changed difficulty, the detector performance susceptible to, the problems such as electronics component is perishable, for the actual conditions of reprocessing plant, the invention provides a kind of L absorption edge densitometer.Concrete technical scheme is as follows:
A kind of L absorption edge densitometer is characterized in that: comprise the glove box main tank, analyze odd-side and computer data acquisition and treatment system, analyze odd-side and computer data acquisition and treatment system and be positioned at glove box main tank outside; The glove box main tank is connected with the analysis odd-side, and the gate for isolation is housed; Analyze odd-side and comprise X source system, Qian Guanglan, sample cell, rear smooth hurdle and detector diversity system; Between X source system and the sample cell, all adopt the window isolation between sample cell and the detector diversity system; Analyze odd-side and carry out communication by wireless mode and computer data acquisition and treatment system.
Wherein, X source system, Qian Guanglan, sample cell, rear smooth hurdle and detector diversity system are installed in and analyze the odd-side bottom for preferred; The X source system adopts silver-colored target X-ray tube for preferred; The used material of sample cell is preferably polypropylene; It is preferred that the detector diversity system adopts SDD detector or Si-PIN detector; The used material of window isolation is preferably boron carbide.
Gate between glove box main tank and the analysis odd-side makes things convenient for the isolation of the two; Sample is divided in the glove box main tank and carries out, and divides the sample that installs to send into the analysis odd-side and measures.Between X source system and the sample cell, all adopt the window isolation between sample cell and the detector diversity system, avoided analyzing radiocontamination X-ray tube and the detector diversity system of odd-side inside.The X ray absorptivity of preferred window isolated material boron carbide is less, on measuring almost not impact.Spectrometer partly is installed in analyzes the odd-side bottom, and the measure portion independent grounding carries out communication by wireless mode, and computer data acquisition and treatment system can be laid flexibly, is convenient to rig-site utilization.
L absorption edge densitometer of the present invention is easy to install, and maintenance, maintenance and X-ray tube are changed all very convenient, and detector performance is unaffected in actual the use, and electronics component is without etching problem, and has satisfied the requirement of protection.
Description of drawings
Fig. 1 L absorption edge densitometer structural representation
Fig. 2 analyzes the odd-side structural representation
1. the glove box main tank is 2. analyzed 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, 9. front smooth hurdle, 10. sample cell, 11. rear smooth hurdles, 12.X ray outgoing 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 densitometer mainly comprises glove box main tank 1, analyzes odd-side 2 and computer data acquisition and treatment system 6 formations.Analyzing odd-side 2 is comprised of X source system 7, X ray incidence window 8, front smooth hurdle 9, sample cell 10, rear smooth hurdle 11, X ray outgoing 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 need not to add cooling circulating water, has greatly dwindled the volume of device.Detector diversity system 13 adopts the Si-PIN detector, the electricity refrigeration, 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 the 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 installed in to be analyzed in the odd-side 2, and X source system 7 and detector diversity system 13 are all being analyzed odd-side 2 outsides.Analyze odd-side 2 two windows are set, be respectively X ray incidence window 8 and X ray outgoing window 12.The axis of the center on the center on the center of X source system 7 windows, 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 outgoing window 12, detector diversity system 13 point-blank.
Claims (6)
1. L absorption edge densitometer, it is characterized in that: comprise glove box main tank (1), analyze odd-side (2) and computer data acquisition and treatment system (6), analyze odd-side (2) and computer data acquisition and treatment system (6) and be positioned at glove box main tank (1) outside; Glove box main tank (1) is connected with analysis odd-side (2), and the gate (3) for isolation 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); Between X source system (7) and the sample cell (10), all adopt the window isolation between sample cell (10) and the detector diversity system (13); Analyze odd-side (2) and carry out communication by wireless mode and computer data acquisition and treatment system (6).
2. L absorption edge densitometer 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 installed in analyzes odd-side (2) bottom.
3. L absorption edge densitometer as claimed in claim 1 is characterized in that: the silver-colored target X-ray tube of X source system (7) employing.
4. L absorption edge densitometer as claimed in claim 1, it is characterized in that: the used material of sample cell (10) is polypropylene.
5. L absorption edge densitometer as claimed in claim 1 is characterized in that: detector diversity system (13) employing SDD detector or Si-PIN detector.
6. such as the described L absorption edge of claim 1-5 densitometer, it is characterized in that: the used material of window isolation is boron carbide.
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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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| CN102967530B CN102967530B (en) | 2016-01-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900755A (en) * | 2014-03-14 | 2014-07-02 | 大连理工大学 | Device and method for measuring minimum miscibility pressure of oil and gas through CT |
| CN110780328A (en) * | 2019-11-05 | 2020-02-11 | 中国原子能科学研究院 | Automatic L-edge densimeter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101504380A (en) * | 2009-03-12 | 2009-08-12 | 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 |
| JP2012150026A (en) * | 2011-01-20 | 2012-08-09 | National Institute Of Advanced Industrial & Technology | Quantitative analysis method by element and quantitative analyzer by element 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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2012
- 2012-11-20 CN CN201210470798.7A patent/CN102967530B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101504380A (en) * | 2009-03-12 | 2009-08-12 | 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 |
| JP2012150026A (en) * | 2011-01-20 | 2012-08-09 | National Institute Of Advanced Industrial & Technology | Quantitative analysis method by element and quantitative analyzer by element 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 |
Non-Patent Citations (2)
| Title |
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| 陈晨等: "《L边界密度计的研制》", 《中国原子能科学研究院学报》, 31 December 2009 (2009-12-31), pages 382 * |
| 马精德，等: "混合K边界（HKED）仪器稳定性标样及工作标准研制及应用", 《中国核科学技术进展报告（第一卷）》, 30 November 2009 (2009-11-30) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900755A (en) * | 2014-03-14 | 2014-07-02 | 大连理工大学 | Device and method for measuring minimum miscibility pressure of oil and gas through CT |
| 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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| CN102967530B (en) | 2016-01-27 |
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