CN102778466B - A kind of coal ash content detector based on single radioactive source - Google Patents
A kind of coal ash content detector based on single radioactive source Download PDFInfo
- Publication number
- CN102778466B CN102778466B CN201210203268.6A CN201210203268A CN102778466B CN 102778466 B CN102778466 B CN 102778466B CN 201210203268 A CN201210203268 A CN 201210203268A CN 102778466 B CN102778466 B CN 102778466B
- Authority
- CN
- China
- Prior art keywords
- coal
- source
- coal sample
- data analysis
- multiple tracks
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention provides a kind of coal ash content detector based on single radioactive source, comprise container, detecting device and automatically controlled machine, container comprises coal sample storehouse, funnel and automatic pumping board, and detecting device comprises middle energy gamma source Cs-137, ray detector and multiple tracks data analysis spectrometer; The gamma photons that middle energy gamma source Cs-137 launches irradiates coal sample, energy gamma ray spectrum signal during ray detector gathers, the output terminal of ray detector connects the input end of multiple tracks data analysis spectrometer, and the output terminal of multiple tracks data analysis spectrometer connects automatically controlled machine.The present invention utilizes many to energy gamma ray spectrum signal in the reception of data analysis spectrometer, the ash content of coal is detected by the change analyzing the X ray absorption peak of the 32KeV obtained, the mass density of coal is detected by the change detecting its full energy peak and Compton platform, revised the impact brought due to Coal Quality variable density by mass density, effectively raise the stability that ash content is measured; And effectively reduce the use of low energy radioactive source, a large amount of is cost-saving.
Description
Technical field
The present invention relates to coal ash content detector, be specifically related to a kind of coal ash content detector based on single radioactive source.
Background technology
At present, in various Measurement and analysis, utilize gamma rays technology as a routine techniques.The lot of advantages that it has other analytical technology not have, such as utilize penetrability this feature strong, gamma rays is just used to the ash content in metal nondestructive examination and coal many years ago.In recent years, the nucleon measurement technology application that gamma rays is relevant is more extensive, and such as it is in the application in the fields such as cement, coal, ore.
Application number be 201010558605.4 patent of invention disclose a kind of three can ash content of coal on-line measuring devices, this device comprises sample container and detecting portion; Described detecting portion comprises low energy gamma source Am241, middle energy gamma source Cs137, lanthanum bromide detector, multiple tracks data analysis spectrometer and silicon drifting detector; The gamma photons that described low energy gamma source Am241 and middle energy gamma source Cs 137 launches irradiates the coal sample in sampling receptacle, can be received by lanthanum bromide detector by gamma rays through the low middle of coal sample; The output terminal of described lanthanum bromide detector connects the input end of multiple tracks data analysis spectrometer; Low energy Gamma irradiation, in coal sample, excites the characteristic X-ray of iron in coal sample, calcium, aluminium simultaneously, and described silicon drifting detector gathers this characteristic X-ray; The output terminal of described silicon drifting detector connects the input end of multiple tracks data analysis spectrometer; The output terminal of described multiple tracks data analysis spectrometer is also connected with industrial computer, under industrial computer controls, the gamma-ray spectrometry information collected and feature X-ray spectrum information is passed to data processing solution spectra system, carries out data processing by data processing solution spectra system.Though this invention can be applied to coal as received automobile and carry out coal and sample automatic device for fast detecting, do not make bypass belt, only directly slightly make structural modification in the rear end of sampling receptacle, detection can be installed, but homogeneity is very poor, measurement result therefore can be caused to occur severe deviations.
Utilize dual intensity gamma rays very ripe to the technology detecting the ash component in coal at present, but due to traditional dual intensity gamma technology, the ash content on axis is visited in the just source of measurement, belong to spot measurement, representative poor, if material uniformity coefficient is inadequate, measuring error will be caused larger.And the restriction that more seriously use of radioactive source is subject to increasingly sharpens, add low energy gamma source and depend on import, cost is high, and delivery cycle cannot ensure in time.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of coal ash content detector based on single radioactive source, utilize many to energy gamma ray spectrum signal in the reception of data analysis spectrometer, the ash content of coal is detected by the change analyzing the X ray absorption peak of the 32KeV obtained, the mass density of coal is detected by the change detecting its full energy peak and Compton platform, revised the impact brought due to Coal Quality variable density by mass density, effectively raise the stability that ash content is measured.Not only effectively reduce the use of low energy radioactive source, simultaneously can be a large amount of cost-saving.
In order to realize foregoing invention object, the present invention takes following technical scheme:
A kind of coal ash content detector based on single radioactive source, described pick-up unit comprises container, detecting device and automatically controlled machine, described container comprises coal sample storehouse, funnel and is positioned at the automatic pumping board bottom described coal sample storehouse, described automatic pumping board is axial vertical with described coal sample storehouse, described automatic pumping board connects automatic dust unloading control system, and described detecting device comprises middle energy gamma source Cs-137, ray detector and multiple tracks data analysis spectrometer; The gamma photons that described middle energy gamma source Cs-137 launches irradiates the coal sample in coal sample storehouse, described ray detector collection is through energy gamma ray spectrum signal in coal sample, the output terminal of described ray detector connects the input end of described multiple tracks data analysis spectrometer, and the output terminal of described multiple tracks data analysis spectrometer connects described automatically controlled machine.
Top, described coal sample storehouse is provided with and connects the measurement position entrance that Sampling Machine abandons sample outlet, and its underpart is provided with the measurement position outlet connecting automatic dust unloading control system.
Described middle energy gamma source Cs-137 be positioned in the protection body of source, and be provided with collimating aperture in the protection body of described source, in the same horizontal line, the hole depth of described collimating aperture is 5 ~ 6cm to the central axis of described collimating aperture and described ray detector, and aperture is 1cm.
Described source protection body is positioned at the side in described coal sample storehouse, and described ray detector is positioned at the opposite side in described coal sample storehouse.
The inside of described source protection body is plumbous, and the thickness of described lead is greater than 6cm.
The thickness of described source protection body shell is 1cm, described shell be by carbon content be 0.10%, silicone content is 0.08%, Fe content is 0.065%, phosphorus content is 0.030%, sulfur content is 0.018%, chromium content is 15.6%, surplus is the reasonable offer of iron, described percentage is percent by weight.
Described collimating aperture is built-in with thin slice, describedly middlely can gamma source Cs-137 be placed on described thin slice, and the distance in the aperture of itself and described collimating aperture is 0.5cm, and the distance bottom described thin slice and described collimating aperture is 0.1mm.Described thin slice is glass fibre or tygon grog sheet.
The gamma photons coal sample irradiated in coal sample storehouse that described middle energy gamma source Cs-137 launches produces the X ray of 32KeV.
Described automatically controlled machine comprises master control system, power supply, data processing and separates spectra system, display system and signal transmission system; The output terminal of described multiple tracks data analysis spectrometer connects described signal transmission system; Signal after the process of multiple tracks data analysis spectrometer is transferred to data processing by described signal transmission system and separates spectra system by described master control system.
Described multiple tracks data analysis spectrometer carries out A/D conversion and Digital Signal Analysis to the signal gathered, the absorption peak of the X ray of 32KeV described in described data processing and spectrum unscrambling systematic analysis obtains ash content of coal response, in analysis, energy gamma rays 600KeV full energy peak obtains the mass thickness response of coal, and described ash content of coal content and mass thickness response all carry out Real time displaying by display system.
Described automatic dust unloading control system comprises automatic unloading valve, speed reduction unit and screw motor, and described automatic unloading valve is star-shaped ash unloading valve, comprises housing, impeller and end cap; Described screw motor drives described wheel rotation by shaft coupling, evenly takes the material of described housing upper to bottom.
Be connected with amplifier between described ray detector and described multiple tracks data analysis spectrometer, described ray detector is NaI scintillation detector or lanthanum bromide detector, and described amplifier is photomultiplier.
Described coal sample storehouse is 0.5 ~ 2 minute by the time interval of funnel samples of coal pulled.
Compared with prior art, beneficial effect of the present invention is:
1. the present invention adopts single radioactive source to instead of the function of two radioactive sources of dual intensity gamma Ash analyser, has effectively saved resource, has saved cost simultaneously also in a large number;
2. can both serve as low energy gamma source to detect the absorption of high Z element in coal by gamma source Cs-137 in, serve as again middle energy gamma source to detect the mass thickness of coal;
3. in utilizing, the X ray of the 32KeV that energy gamma source Cs137 produces serves as low energy radioactive source, utilizes the X ray of 32KeV through the absorption of coal to detect the ash content response in coal;
4. the present invention the full energy peak of 600KeV that produces of gamma source Cs137 and the absorption of Compton platform thereof can detect the mass thickness response of coal in utilizing, and compensates the impact brought due to density or variation in thickness;
5. the present invention can be applicable to entrance coal automobile and carrys out coal sampling and automatically fast detect and put, and does not make bypass belt, only directly slightly makes structural modification in the rear end of sampling receptacle, can install detection.
Accompanying drawing explanation
Fig. 1 is the coal ash content detector example structure figure based on single radioactive source.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As Fig. 1, a kind of coal ash content detector based on single radioactive source, described pick-up unit comprises container, detecting device and automatically controlled machine, described container comprises coal sample storehouse, funnel and is positioned at the automatic pumping board bottom described coal sample storehouse, described automatic pumping board is axial vertical with described coal sample storehouse, described automatic pumping board connects automatic dust unloading control system, and described detecting device comprises middle energy gamma source Cs-137, ray detector and multiple tracks data analysis spectrometer; The gamma photons that described middle energy gamma source Cs-137 launches irradiates the coal sample in coal sample storehouse, described ray detector collection is through energy gamma ray spectrum signal in coal sample, the output terminal of described ray detector connects the input end of described multiple tracks data analysis spectrometer, and the output terminal of described multiple tracks data analysis spectrometer connects described automatically controlled machine.
Top, described coal sample storehouse is provided with and connects the measurement position entrance that Sampling Machine abandons sample outlet, and its underpart is provided with the measurement position outlet connecting automatic dust unloading control system.
Described middle energy gamma source Cs-137 be positioned in the protection body of source, and be provided with collimating aperture in the protection body of described source, in the same horizontal line, the hole depth of described collimating aperture is 5 ~ 6cm to the central axis of described collimating aperture and described ray detector, and aperture is 1cm.
Described source protection body is positioned at the side in described coal sample storehouse, and described ray detector is positioned at the opposite side in described coal sample storehouse.
The inside of described source protection body is plumbous, and the thickness of described lead is greater than 6cm.
The thickness of described source protection body shell is 1cm, described shell be by carbon content be 0.10%, silicone content is 0.08%, Fe content is 0.065%, phosphorus content is 0.030%, sulfur content is 0.018%, chromium content is 15.6%, surplus is the reasonable offer of iron, described percentage is percent by weight.
Described collimating aperture is built-in with thin slice, describedly middlely can gamma source Cs-137 be placed on described thin slice, and the distance in the aperture of itself and described collimating aperture is 0.5cm, and the distance bottom described thin slice and described collimating aperture is 0.1mm.Described thin slice is glass fibre or tygon grog sheet.
The gamma photons coal sample irradiated in coal sample storehouse that described middle energy gamma source Cs-137 launches produces the X ray of 32KeV.
Described automatically controlled machine comprises master control system, power supply, data processing and separates spectra system, display system and signal transmission system; The output terminal of described multiple tracks data analysis spectrometer connects described signal transmission system; Signal after the process of multiple tracks data analysis spectrometer is transferred to data processing by described signal transmission system and separates spectra system by described master control system.
Described multiple tracks data analysis spectrometer carries out A/D conversion and Digital Signal Analysis to the signal gathered, the absorption peak of the X ray of 32KeV described in described data processing and spectrum unscrambling systematic analysis obtains ash content of coal response, in analysis, energy gamma rays 600KeV full energy peak obtains the mass thickness response of coal, and described ash content of coal content and mass thickness response all carry out Real time displaying by display system.
Described automatic dust unloading control system comprises automatic unloading valve, speed reduction unit and screw motor, and described automatic unloading valve is star-shaped ash unloading valve, comprises housing, impeller and end cap; Described screw motor drives described wheel rotation by shaft coupling, evenly takes the material of described housing upper to bottom.
Be connected with amplifier between described ray detector and described multiple tracks data analysis spectrometer, described ray detector is NaI scintillation detector or lanthanum bromide detector, and described amplifier is photomultiplier.
Described coal sample storehouse is 0.5 ~ 2 minute by the time interval of funnel samples of coal pulled.
In sum, the present invention utilizes many to energy gamma ray spectrum signal in the reception of data analysis spectrometer, the ash content of coal is detected by the change analyzing the X ray absorption peak of the 32KeV obtained, the mass density of coal is detected by the change detecting its full energy peak and Compton platform, revised the impact brought due to Coal Quality variable density by mass density, effectively raise the stability that ash content is measured; And effectively reduce the use of low energy radioactive source, a large amount of is cost-saving.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although with reference to above-described embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or equivalent replacement, and not departing from any amendment of spirit and scope of the invention or equivalent replacement, it all should be encompassed in the middle of right of the present invention.
Claims (1)
1. the coal ash content detector based on single radioactive source, described pick-up unit comprises container, detecting device and automatically controlled machine, it is characterized in that: described container comprises coal sample storehouse, funnel and is positioned at the automatic pumping board bottom described coal sample storehouse, described automatic pumping board is axial vertical with described coal sample storehouse, described automatic pumping board connects automatic dust unloading control system, and described detecting device comprises middle energy gamma source Cs-137, ray detector and multiple tracks data analysis spectrometer; The gamma photons that described middle energy gamma source Cs-137 launches irradiates the coal sample in coal sample storehouse, described ray detector collection is through energy gamma ray spectrum signal in coal sample, the output terminal of described ray detector connects the input end of described multiple tracks data analysis spectrometer, and the output terminal of described multiple tracks data analysis spectrometer connects described automatically controlled machine;
Top, described coal sample storehouse is provided with and connects the measurement position entrance that Sampling Machine abandons sample outlet, and its underpart is provided with the measurement position outlet connecting automatic dust unloading control system;
Described middle energy gamma source Cs-137 be positioned in the protection body of source, and be provided with collimating aperture in the protection body of described source, in the same horizontal line, the hole depth of described collimating aperture is 5 ~ 6cm to the central axis of described collimating aperture and described ray detector, and aperture is 1cm;
Described source protection body is positioned at the side in described coal sample storehouse, and described ray detector is positioned at the opposite side in described coal sample storehouse;
The inside of described source protection body is plumbous, and the thickness of described lead is greater than 6cm;
The thickness of described source protection body shell is 1cm, described shell be by carbon content be 0.10%, silicone content is 0.08%, Fe content is 0.065%, phosphorus content is 0.030%, sulfur content is 0.018%, chromium content is 15.6%, surplus is the reasonable offer of iron, above-mentioned percentage is percent by weight;
Described collimating aperture is built-in with thin slice, describedly middlely can gamma source Cs-137 be placed on described thin slice, and the distance in the aperture of itself and described collimating aperture is 0.5cm, and the distance bottom described thin slice and described collimating aperture is 0.1mm;
Described thin slice is glass fibre or tygon grog sheet;
The gamma photons coal sample irradiated in coal sample storehouse that described middle energy gamma source Cs-137 launches produces the X ray of 32KeV;
Described automatically controlled machine comprises master control system, power supply, data processing and separates spectra system, display system and signal transmission system; The output terminal of described multiple tracks data analysis spectrometer connects described signal transmission system; Signal after the process of multiple tracks data analysis spectrometer is transferred to data processing by described signal transmission system and separates spectra system by described master control system;
Described multiple tracks data analysis spectrometer carries out A/D conversion and Digital Signal Analysis to the signal gathered, the absorption peak of the X ray of 32KeV described in described data processing and spectrum unscrambling systematic analysis obtains ash content of coal response, in analysis, energy gamma rays 600KeV full energy peak obtains the mass thickness response of coal, and described ash content of coal content and mass thickness response all carry out Real time displaying by display system;
Described automatic dust unloading control system comprises automatic unloading valve, speed reduction unit and screw motor, and described automatic unloading valve is star-shaped ash unloading valve, comprises housing, impeller and end cap; Described screw motor drives described wheel rotation by shaft coupling, evenly takes the material of described housing upper to bottom;
Be connected with amplifier between described ray detector and described multiple tracks data analysis spectrometer, described ray detector is NaI scintillation detector or lanthanum bromide detector, and described amplifier is photomultiplier;
Described coal sample storehouse is 0.5 ~ 2 minute by the time interval of funnel samples of coal pulled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210203268.6A CN102778466B (en) | 2012-06-19 | 2012-06-19 | A kind of coal ash content detector based on single radioactive source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210203268.6A CN102778466B (en) | 2012-06-19 | 2012-06-19 | A kind of coal ash content detector based on single radioactive source |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102778466A CN102778466A (en) | 2012-11-14 |
| CN102778466B true CN102778466B (en) | 2015-11-04 |
Family
ID=47123448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210203268.6A Active CN102778466B (en) | 2012-06-19 | 2012-06-19 | A kind of coal ash content detector based on single radioactive source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102778466B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103399024B (en) * | 2013-07-23 | 2015-04-08 | 中国矿业大学 | Experiment table for automatically identifying coal-gangue mixing degree |
| CN104849292A (en) * | 2015-06-10 | 2015-08-19 | 长沙敏衡测控科技有限公司 | Rapid coal quality analysis device |
| CN106153655A (en) * | 2016-08-15 | 2016-11-23 | 长沙开元仪器股份有限公司 | A kind of ature of coal on-line measuring device |
| CN111855711B (en) * | 2020-09-10 | 2021-01-15 | 天津美腾科技股份有限公司 | Lump coal quality detection method and system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4566114A (en) * | 1980-06-20 | 1986-01-21 | Australian Atomic Energy Commission | X- and γ-Ray techniques for determination of the ash content of coal |
| CN2083228U (en) * | 1990-09-28 | 1991-08-21 | 鞍山钢铁公司 | Rotary cinder valve capable of preventing adhesion and stopping |
| CN201653849U (en) * | 2010-04-22 | 2010-11-24 | 陆宇平 | Online coal quality analyzing device for power plants |
| CN101907582A (en) * | 2010-06-23 | 2010-12-08 | 清华大学 | Full section scanning on-line detection device |
| CN102095744A (en) * | 2010-11-25 | 2011-06-15 | 贾文宝 | Three-energy coal ash content online monitoring device |
| CN102368057A (en) * | 2011-09-16 | 2012-03-07 | 清华大学 | Transmission X-ray coal detection system |
-
2012
- 2012-06-19 CN CN201210203268.6A patent/CN102778466B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4566114A (en) * | 1980-06-20 | 1986-01-21 | Australian Atomic Energy Commission | X- and γ-Ray techniques for determination of the ash content of coal |
| CN2083228U (en) * | 1990-09-28 | 1991-08-21 | 鞍山钢铁公司 | Rotary cinder valve capable of preventing adhesion and stopping |
| CN201653849U (en) * | 2010-04-22 | 2010-11-24 | 陆宇平 | Online coal quality analyzing device for power plants |
| CN101907582A (en) * | 2010-06-23 | 2010-12-08 | 清华大学 | Full section scanning on-line detection device |
| CN102095744A (en) * | 2010-11-25 | 2011-06-15 | 贾文宝 | Three-energy coal ash content online monitoring device |
| CN102368057A (en) * | 2011-09-16 | 2012-03-07 | 清华大学 | Transmission X-ray coal detection system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102778466A (en) | 2012-11-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103837558B (en) | Multielement composition and content detection device and detection method in a kind of aqueous solution based on PGNAA technology | |
| CN101603929B (en) | Device for detecting compositions of coal on conveying belt in real time | |
| CN102095744B (en) | Three-energy coal ash content online monitoring device | |
| CN101349661B (en) | Method for on-line detecting coal ashes on belt | |
| CN203949849U (en) | A kind of pick-up unit of measuring particle quality concentration | |
| CN102778466B (en) | A kind of coal ash content detector based on single radioactive source | |
| CN101349660A (en) | On-line analysis detection method of mine material iron ore grade | |
| CN103852475A (en) | Multichannel potassium measuring instrument based on gamma ray | |
| CN102749345B (en) | Multipoint type detection apparatus for ash content of coal | |
| CN108918565A (en) | A kind of sample Elemental redistribution measuring device and method based on prompt gamma ray neutron activation analysis technique | |
| CN107229080A (en) | A kind of acquisition methods of geochemical well logging neutron absorption gamma spectra | |
| CN101907582B (en) | Full section scanning on-line detection device | |
| CN103901051A (en) | Single-path potassium measuring instrument based on beta rays | |
| CN105487100A (en) | Fixed-type plastic crystal potassium tester | |
| CN102749344B (en) | A kind of coal ash detection method based on single radioactive source | |
| CN204101739U (en) | A kind of portable multi-function digital radiation logging | |
| CN102778470B (en) | Multiple-point coal ash detection method | |
| CN204705719U (en) | A kind of portable radioactive contamination meter | |
| CN204008454U (en) | Portable near infrared spectrometer for detection of mould index in storage paddy | |
| CN2453436Y (en) | Online analysing device for components in coal fed into furnace of power plant | |
| CN112730476B (en) | Mineral purity detection method | |
| CN201780277U (en) | On-line detection device with full-section scanning effect | |
| CN113484895B (en) | Alpha surface pollution detector and detection method for high radon background | |
| CN103837559B (en) | The quick sulphur meter of many target scans formula | |
| CN204740213U (en) | Foresee in lime -ash of coal burning back device of uranium content and categorised control of coal on line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160520 Address after: 010020 the Inner Mongolia Autonomous Region Hohhot city the Inner Mongolia Autonomous Region Hohhot District of Saihan City, Xilin road Shandan tower C 5 floor Patentee after: Inner Mongolia Hohhot Lixin Electrical Technology Co., Ltd. Address before: Office building 010010 the Inner Mongolia Autonomous Region Hohhot Hongsheng Industrial Park, New District 205 room Patentee before: Inner Mongolia Lixin Measurement Control Technology Co., Ltd. |