CN101738408A - Adjustable on-line multielement analyzer - Google Patents
Adjustable on-line multielement analyzer Download PDFInfo
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- CN101738408A CN101738408A CN 200810228952 CN200810228952A CN101738408A CN 101738408 A CN101738408 A CN 101738408A CN 200810228952 CN200810228952 CN 200810228952 CN 200810228952 A CN200810228952 A CN 200810228952A CN 101738408 A CN101738408 A CN 101738408A
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Abstract
The invention relates to a nuclear on-line detection device, in particular to a neutron activation detection device which can be used for on-line multielement detection of solid materials on a conveying belt of industries of building materials, coal, thermoelectricity, metallurgy, mine and the like. The number of neutron sources used in the nuclear on-line detection device is two or more. Relative distance among a plurality of radioactive sources and the position of the radioactive sources integer relative to the conveying belt can be respectively conveniently adjusted by adjusting two knobs outside an adjusting device. The invention always has better measurement effect even when the on-site materials deflect, the width of the materials changes, the shape of the materials changes, and the material compositions are not uniform, thereby improving the adaptability of the device to the material changes on the site.
Description
Technical field:
The present invention relates to a kind of nuclear on-line measuring device, be specifically related to a kind of neutron activation pick-up unit.
Prior art:
Industries such as building materials, coal, thermoelectricity, metallurgy, mine need be carried out the multielement measurement to loose unpacked material on the conveying belt, produce to instruct.Utilize the multi-element analyser of sending out the gamma analytical technology neutron activation wink as a kind of main on-line element analysis instrument, can realize the continuous coverage of travelling belt loose unpacked material.This type of instrument adopts the transmission measurement mode usually, and promptly neutron source and detector are positioned at the both sides of tested material.After the analyser installation, the stationkeeping of neutron source is constant.When the output of enterprise changes, proportional quantity changes when causing that the material load changes on the on-the-spot travelling belt, material width and shape change; During irregular or belt deviation, material shapes, component distributing change or sideslip when the feed bin blanking, and at this moment, the analyser measurement effect can variation, even can't operate as normal.
Summary of the invention:
At the defective that existing on-line element analysis instrument exists, the present invention proposes a kind of online multi-element analyser that can conveniently adjust according to on-the-spot material situation.Solve the problems of the technologies described above, the concrete technical scheme of being taked is: a kind of adjustable on-line multielement analyzer is characterized in that:
Whole device is supported by support (6), neutron source device (5) is installed in the slowing down absorber (4), slowing down absorber (4) is in the analyser bottom, in the housing (55) of neutron source device (5), source bar (54) is housed, drive link (53) passes source bar (54) one ends and connects chamber, source (52) other end connection accent source knob (58), neutron source core (51) places in the chamber, source (52), above transferring source knob (58), centering knob (57) is housed, accent source knob (58) and centering knob (57) link to each other with digital display meter (56) respectively, detector (2) is at analyser top and data collection processor (7), main frame (8) connects, be equipped with shield (3) below the detector (2), whole device is equipped with protection body (1) outward.
Chamber, source (52) is two or more.
Beneficial effect
The locus of the relative material in source distributes most important to the measurement effect of analyser.When the material sideslip, the material wide variety, material shapes changes, and when material component is uneven, the source side formula of single radioactive source or stationkeeping will no longer be fit to measure.When the material sideslip, neutron source no longer is the centre bottom at material, the neutron that causes radioactive source to send is owed to absorb in the few side of material, reduce feature gamma-rays output, and unnecessary neutron can strengthen the background influence to detector, and crosses absorption at the many side neutrons of material, and unnecessary material is to the gamma-ray decay of the feature of output, make the measurement result variation, this situation can only be improved measurement result by the locus of adjusting neutron source; When the material broad, if adopt single radioactive source mode, then the neutron at material middle part is owed to absorb, and the neutron at material two ends is crossed absorption, fails to make neutron and material fully to act on, but if adopt then homogenizing neutron flux of many radioactive sources mode, neutron and material are fully acted on, improve measurement effect; When material deformationization, and composition adopts single source side formula bigger to the influence of measuring when uneven, if adopt many radioactive sources mode then homogenizing the space behavior effect of radioactive source with material, reduced the influence of material material deformationization and composition inequality to measurement.
Online multi-element analyser with multi-source, adjustable positions source export structure can be used for the online multielement detection of solid material on the industry conveying belt such as building materials, coal, thermoelectricity, metallurgy, mine, and there is stronger adaptability at the scene.
Description of drawings:
Fig. 1 is apparatus of the present invention structural representation
Fig. 2 is Fig. 1 side view
Fig. 3 is the neutron source apparatus structure synoptic diagram among Fig. 1
Fig. 4 is Fig. 3 side view
Among the figure: 1. chamber, protection body 2. detector 3. shields, 4. slowing down absorber 5. neutron source devices, 6. support 7. data collection processors, 8. main frame 9. conveying belt, 10. tested material 51. neutron source cores, 52. source 53. drive links 54. source bars 55. housings 56. digital display meters 57. centering knobs 58. are transferred the source knob
Embodiment:
Be described with reference to the accompanying drawings structure of the present invention and using method.
Embodiment 1:
Whole device is supported by support 6, neutron source device 5 is installed in the slowing down absorber 4, slowing down absorber 4 is in the analyser bottom, in the housing 55 of neutron source device 5, source bar 54 is housed, drive link 53 passes source bar 54 1 ends and connects 52 other ends connection accent source, chamber, source knob 58, by regulating the relative distance that accent source knob 58 can be adjusted between a plurality of radioactive sources
252CF neutron source core 51, activity is 10 micrograms, is placed in the chamber, source 52, above the source of accent knob 58 centering knob 57 is housed, can adjust the whole position of conveying belt relatively of radioactive source by regulating centering knob 57, transfer source knob 58 and centering knob 57 to link to each other with digital display meter 56 respectively.BGO detector 2 is connected with data collection processor 7, main frame 8 on analyser top, is equipped with shield 3 below the BGO detector 2, and whole device is equipped with protection body 1 outward.
Two neutron source cores 51 are placed on respectively in the chamber, two sources 52, apart from 8cm.Fixedly grade iron compound sample 10 measure the wide 35cm of standard sample, thick 15cm in conveying belt 9 cocycles.Material 10 continues the about 5cm of sideslip after circulation a period of time, under the situation of not adjusting the source position, continue to measure, and the record measurement result.Adjust centering knob 57 afterwards and make neutron source integral body adjust 2.3cm, begin to measure and the record measurement result to material sideslip direction.
Experimental measurements proves: measure average error behind the adjustment source than little by 0.7% before not adjusting.
Embodiment 2:
Whole device is supported by support 6, neutron source device 5 is installed in the slowing down absorber 4, slowing down absorber 4 is in the analyser bottom, in the housing 55 of neutron source device 5, source bar 54 is housed, drive link 53 passes source bar 54 1 ends and connects 52 other ends connection accent source, chamber, source knob 58, by regulating the relative distance that accent source knob 58 can be adjusted between a plurality of radioactive sources
252CF neutron source core 51, activity is 15 micrograms, is placed in the chamber, source 52, above the source of accent knob 58 centering knob 57 is housed, can adjust the whole position of conveying belt relatively of radioactive source by regulating centering knob 57, transfer source knob 58 and centering knob 57 to link to each other with digital display meter 56 respectively.BGO detector 2 is connected with data collection processor 7, main frame 8 on analyser top, is equipped with shield 3 below the BGO detector 2, and whole device is equipped with protection body 1 outward.
The raw coal 10 that certain granules arranged falls into conveying belt 9 from material outlet and enters in the analyser and measure, and analyser is three neutron sources.During beginning three neutron sources together, measurement effect is undesirable.Through observe finding raw coal 10 when material outlet falls into conveying belt, the raw coal that particle is bigger is scattered in the belt both sides more, because particle often changes, influences measurement effect.By regulating accent source knob 58, widen three distances between the neutron source core 51, measurement effect is improved.
Claims (2)
1. adjustable on-line multielement analyzer is characterized in that:
Whole device is supported by support (6), neutron source device (5) is installed in the slowing down absorber (4), slowing down absorber (4) is in the analyser bottom, in the housing (55) of neutron source device (5), source bar (54) is housed, drive link (53) passes source bar (54) one ends and connects chamber, source (52) other end connection accent source knob (58), neutron source core (51) places in the chamber, source (52), above transferring source knob (58), centering knob (57) is housed, accent source knob (58) and centering knob (57) link to each other with digital display meter (56) respectively, detector (2) is at analyser top and multichannel spectrometer (7), main frame (8) connects, be equipped with shield (3) below the detector (2), whole device is equipped with protection body (1) outward.
2. according to 1. 1 kinds of adjustable on-line multielement analyzers of claim, it is characterized in that: chamber, source (52) are for two or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810228952 CN101738408B (en) | 2008-11-21 | 2008-11-21 | Adjustable on-line multielement analyzer |
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| CN 200810228952 CN101738408B (en) | 2008-11-21 | 2008-11-21 | Adjustable on-line multielement analyzer |
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| CN101738408A true CN101738408A (en) | 2010-06-16 |
| CN101738408B CN101738408B (en) | 2013-07-17 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841106A (en) * | 2012-09-05 | 2012-12-26 | 南京威测环保科技有限公司 | Transmission-type online detection device for coal characteristic indexes |
| CN104951451A (en) * | 2014-03-27 | 2015-09-30 | 丹东东方测控技术股份有限公司 | Energy spectrum knowledge base establishing method for neutron activation element analysis |
| CN107290355A (en) * | 2016-03-31 | 2017-10-24 | 丹东东方测控技术股份有限公司 | The online neutron activation alumina silica ratio analytical equipment of transmission-type bauxite and analysis method |
| CN108007948A (en) * | 2017-12-22 | 2018-05-08 | 安徽海螺集团有限责任公司 | Neutron activation analysis equipment |
| CN114324430A (en) * | 2022-03-07 | 2022-04-12 | 合肥金星智控科技股份有限公司 | Detection device based on neutron activation |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5258622A (en) * | 1992-03-13 | 1993-11-02 | Troxler Electronic Laboratories, Inc. | Apparatus and method for measuring physical characteristics of materials |
| CN2496019Y (en) * | 2001-09-30 | 2002-06-19 | 南京瞬发科技应用研究所 | Coal sample container and coal quatity detecting apparatus therewith |
| CN1632544A (en) * | 2004-12-30 | 2005-06-29 | 吉林省科仑辐射技术开发有限公司 | Neutron cement multi-element analyzer |
| CN101206186B (en) * | 2007-11-27 | 2011-01-12 | 南京国晟科技有限公司 | Device for analyzing and detecting coal constituent rapidly |
| CN201348615Y (en) * | 2008-11-21 | 2009-11-18 | 丹东东方测控技术有限公司 | Adjustable on-line multielement analyzer |
| CN101603929B (en) * | 2009-07-16 | 2012-02-08 | 江苏广兆科技有限责任公司 | Device for detecting compositions of coal on conveying belt in real time |
-
2008
- 2008-11-21 CN CN 200810228952 patent/CN101738408B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841106A (en) * | 2012-09-05 | 2012-12-26 | 南京威测环保科技有限公司 | Transmission-type online detection device for coal characteristic indexes |
| CN104951451A (en) * | 2014-03-27 | 2015-09-30 | 丹东东方测控技术股份有限公司 | Energy spectrum knowledge base establishing method for neutron activation element analysis |
| CN104951451B (en) * | 2014-03-27 | 2018-05-08 | 丹东东方测控技术股份有限公司 | A kind of power spectrum construction of knowledge base method suitable for neutron activation elemental analysis |
| CN107290355A (en) * | 2016-03-31 | 2017-10-24 | 丹东东方测控技术股份有限公司 | The online neutron activation alumina silica ratio analytical equipment of transmission-type bauxite and analysis method |
| CN108007948A (en) * | 2017-12-22 | 2018-05-08 | 安徽海螺集团有限责任公司 | Neutron activation analysis equipment |
| CN114324430A (en) * | 2022-03-07 | 2022-04-12 | 合肥金星智控科技股份有限公司 | Detection device based on neutron activation |
| CN114324430B (en) * | 2022-03-07 | 2022-06-17 | 合肥金星智控科技股份有限公司 | Detection device based on neutron activation |
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| CN101738408B (en) | 2013-07-17 |
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Address after: 118002 Binjiang Middle Road, Dandong Development Zone, Liaoning, China, No. 136 Patentee after: Dandong Dongfang Measurement & Control Technology Co., Ltd. Address before: 118002 Binjiang Middle Road, Dandong Development Zone, Liaoning, China, No. 136 Patentee before: Dandong Dongfang Measurement & Control Technology Co., Ltd. |