CN102778466A - Coal ash content detection device based on single radioactive source - Google Patents
Coal ash content detection device based on single radioactive source Download PDFInfo
- Publication number
- CN102778466A CN102778466A CN2012102032686A CN201210203268A CN102778466A CN 102778466 A CN102778466 A CN 102778466A CN 2012102032686 A CN2012102032686 A CN 2012102032686A CN 201210203268 A CN201210203268 A CN 201210203268A CN 102778466 A CN102778466 A CN 102778466A
- Authority
- CN
- China
- Prior art keywords
- coal
- ash content
- gamma
- ray
- radioactive source
- 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.)
- Granted
Links
Images
Abstract
The invention provides a coal ash content detection device based on a single radioactive source. The coal ash content detection device comprises a container, a detector and an electronic control machine; the container comprises a coal sample bin, a funnel and an automatic drawing plate; the detector comprises a moderate energy Gamma source Cs-137, a ray detector and a multi-channel data analysis spectrometer; Gamma photons emitted by the moderate energy Gamma source Cs-137 irradiates a coal sample, the ray detector collects moderate Gamma ray spectrum signals, the output end of the ray detector is connected with the input end of the multi-channel data analysis spectrometer, and the output end of the multi-channel data analysis spectrometer is connected with the electronic control machine. According to the coal ash content detection device, the multi-channel data analysis spectrometer is utilized to receive the moderate Gamma ray spectrum signals, the ash content of coal is detected through the analysis on the change of absorption peak of collected 32 keV X ray, the mass density of the coal is detected through the detection on total-energy peak of the X ray and the change of a Compton platform, and the influence caused by the change of the mass density of the coal is corrected through the mass density, so that the stability on the measurement of the ash content is effectively improved; and the utilization of low-energy radioactive sources is effectively reduced, and the cost is greatly saved.
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 the gamma rays technology as a routine techniques.The lot of advantages that it has other analytical technology not have is for example utilized strong these characteristics of penetrability, and gamma rays just is used to the ash content in metal nondestructive examination and the coal many years ago.In recent years, the nuclear measuring technique that gamma rays is relevant is used more extensive, and for example it is in the application in fields such as cement, coal, ore.
Application number be 201010558605.4 patent of invention disclose a kind of three can the ash content of coal on-line measuring devices, this device comprises sample container and test section; Said test section comprises low energy gamma source Am241, middle ability gamma source Cs137, lanthanum bromide detector, multiple tracks data analysis spectrometer and silicon drifting detector; Coal sample in the gamma photons irradiation sampling receptacle of said low energy gamma source Am241 and middle ability gamma source Cs 137 emissions is through low middle can the reception by the lanthanum bromide detector by gamma rays of coal sample; The output terminal of said lanthanum bromide detector connects the input end of multiple tracks data analysis spectrometer; The low energy gamma shines on the coal sample, excites the characteristic X-ray of iron in the coal sample, calcium, aluminium simultaneously, and said silicon drifting detector is gathered this characteristic X-ray; The output terminal of said silicon drifting detector connects the input end of multiple tracks data analysis spectrometer; The output terminal of said multiple tracks data analysis spectrometer also is connected with industrial computer, under industrial computer control, the gamma-ray spectrometry information that collects and characteristic X-ray spectrum information is passed to data processing separate spectra system, separates spectra system by data processing and carries out data processing.Though this invention can be applied to come the coal automatic device for fast detecting of taking a sample into factory's coal automobile; Do not make the bypass belt, only directly make structural modification slightly, get final product installation and measuring in the rear end of sampling receptacle; But homogeneity is very poor, therefore can cause measurement result serious deviation to occur.
The technology of utilizing the dual intensity gamma rays to detect the ash component in the coal at present is very ripe, but because traditional dual intensity gamma technology, the ash content on the axis is visited in the just source of measurement; Belong to spot measurement; Representative poor, if the material uniformity coefficient is not enough, will cause measuring error bigger.And the restriction that the use of even more serious is radioactive source receives increasingly sharpens, and adds the low energy gamma source and depends on import, and cost is high, and delivery cycle can't in time guarantee.
Summary of the invention
In order to overcome the deficiency of above-mentioned prior art; The present invention provides a kind of coal ash content detector based on single radioactive source; Utilize many can the gamma ray spectrum signal in receiving to the data analysis spectrometer; The ash content of the change-detection coal of the X ray absorption peak through analyzing the 32KeV obtained; The mass density of the change-detection coal through detecting its full energy peak and Compton platform is revised because the influence that the Coal Quality variable density is brought effectively raises the ash content measuring stability through mass density.Not only effectively reduced the use of low energy radioactive source, saving cost that simultaneously can be a large amount of.
In order to realize the foregoing invention purpose, the present invention takes following technical scheme:
A kind of coal ash content detector based on single radioactive source; Said pick-up unit comprises container, detecting device and automatically controlled machine; Said container comprises coal sample storehouse, funnel and is positioned at the automatic pumping board of bottom, said coal sample storehouse; Said automatic pumping board is axial vertical with said coal sample storehouse, and said automatic pumping board connects automatic dust unloading control system, ability gamma source Cs-137, ray detector and multiple tracks data analysis spectrometer during said detecting device comprises; Coal sample in the gamma photons irradiation coal sample storehouse of ability gamma source Cs-137 emission in said; Said ray detector collection sees through the middle ability gamma ray spectrum signal of coal sample; The output terminal of said ray detector connects the input end of said multiple tracks data analysis spectrometer, and the output terminal of said multiple tracks data analysis spectrometer connects said automatically controlled machine.
Top, said coal sample storehouse is provided with and connects the measurement position inlet that Sampling Machine is abandoned the appearance outlet, and its underpart is provided with the measurement position outlet that connects automatic dust unloading control system.
Can be positioned in the protection body of source by gamma source Cs-137 in said, be provided with collimating aperture in the protection body of said source, the central axis of said collimating aperture and said ray detector is on same horizontal line, and the hole depth of said collimating aperture is 5～6cm, and the aperture is 1cm.
Said source protection body is positioned at a side in said coal sample storehouse, and said ray detector is positioned at the opposite side in said coal sample storehouse.
The inside of said source protection body is plumbous, and the thickness of said lead is greater than 6cm.
The thickness of said source protection body shell is 1cm; Said shell be by carbon content be 0.10%, silicone content is 0.08%, manganese content is 0.065%, phosphorus content is 0.030%, sulfur content is 0.018%, chromium content is 15.6%, surplus is the alloy preparation of iron, described percentage is percent by weight.
Said collimating aperture is built-in with thin slice, can gamma source in said Cs-137 place on the said thin slice, its distance with the aperture of said collimating aperture is 0.5cm, the distance bottom said thin slice and the said collimating aperture is 0.1mm.Said thin slice is spun glass or tygon grog sheet.
Coal sample in the gamma photons irradiation coal sample storehouse of ability gamma source Cs-137 emission in said produces the X ray of 32KeV.
Said 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 said multiple tracks data analysis spectrometer connects said signal transmission system; Signal after said master control system is handled multiple tracks data analysis spectrometer is transferred to data processing and separates spectra system through said signal transmission system.
Said multiple tracks data analysis spectrometer carries out A/D conversion and Digital Signal Analysis to the signal of gathering; The absorption peak of the X ray of said data processing and the said 32KeV of spectrum unscrambling systematic analysis obtains the ash content of coal response; Ability gamma rays 600KeV full energy peak obtains the mass thickness response of coal in the analysis, and said ash content of coal content and mass thickness response are all carried out online demonstration through display system.
Said automatic dust unloading control system comprises automatic ash-discharging valve, speed reduction unit and screw motor, and said automatic ash-discharging valve is a star-shaped ash unloading valve, comprises housing, impeller and end cap; Said screw motor drives said wheel rotation through shaft coupling, evenly takes the material on said housing top to bottom.
Be connected with amplifier between said ray detector and the said multiple tracks data analysis spectrometer, said ray detector is NaI scintillation detector or lanthanum bromide detector, and said amplifier is a photomultiplier.
Said coal sample storehouse is 0.5～2 minute through 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 substitute the function of two radioactive sources of dual intensity gamma Ash analyser, has effectively practiced thrift resource, simultaneously also a large amount of saving cost;
2. middle ability gamma source Cs-137 both serve as the absorption that the low energy gamma source detects high Z element in the coal, and the ability gamma source detects the mass thickness of coal in serving as again;
3. the X ray of the 32KeV that can gamma source Cs137 in utilizing produces serves as the low energy radioactive source, and the absorption that utilizes the X ray of 32KeV to pass coal detects the ash content response in the coal;
4. the full energy peak of the 600KeV that ability gamma source Cs137 produces in the utilization of the present invention and the absorption of Compton platform thereof detect the mass thickness response of coal, and compensation is because the influence that density or variation in thickness are brought;
5. the present invention can be applicable to admission coal automobile and comes the coal automatic fast detecting of taking a sample to put, and does not make the bypass belt, only directly makes structural modification slightly in the rear end of sampling receptacle, gets final product installation and measuring.
Description of drawings
Fig. 1 is based on the coal ash content detector example structure figure of single radioactive source.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further explain.
Like Fig. 1; A kind of coal ash content detector based on single radioactive source; Said pick-up unit comprises container, detecting device and automatically controlled machine, and said container comprises coal sample storehouse, funnel and be positioned at the automatic pumping board of bottom, said coal sample storehouse that said automatic pumping board is axial vertical with said coal sample storehouse; Said automatic pumping board connects automatic dust unloading control system, ability gamma source Cs-137, ray detector and multiple tracks data analysis spectrometer during said detecting device comprises; Coal sample in the gamma photons irradiation coal sample storehouse of ability gamma source Cs-137 emission in said; Said ray detector collection sees through the middle ability gamma ray spectrum signal of coal sample; The output terminal of said ray detector connects the input end of said multiple tracks data analysis spectrometer, and the output terminal of said multiple tracks data analysis spectrometer connects said automatically controlled machine.
Top, said coal sample storehouse is provided with and connects the measurement position inlet that Sampling Machine is abandoned the appearance outlet, and its underpart is provided with the measurement position outlet that connects automatic dust unloading control system.
Can be positioned in the protection body of source by gamma source Cs-137 in said, be provided with collimating aperture in the protection body of said source, the central axis of said collimating aperture and said ray detector is on same horizontal line, and the hole depth of said collimating aperture is 5～6cm, and the aperture is 1cm.
Said source protection body is positioned at a side in said coal sample storehouse, and said ray detector is positioned at the opposite side in said coal sample storehouse.
The inside of said source protection body is plumbous, and the thickness of said lead is greater than 6cm.
The thickness of said source protection body shell is 1cm; Said shell be by carbon content be 0.10%, silicone content is 0.08%, manganese content is 0.065%, phosphorus content is 0.030%, sulfur content is 0.018%, chromium content is 15.6%, surplus is the alloy preparation of iron, described percentage is percent by weight.
Said collimating aperture is built-in with thin slice, can gamma source in said Cs-137 place on the said thin slice, its distance with the aperture of said collimating aperture is 0.5cm, the distance bottom said thin slice and the said collimating aperture is 0.1mm.Said thin slice is spun glass or tygon grog sheet.
Coal sample in the gamma photons irradiation coal sample storehouse of ability gamma source Cs-137 emission in said produces the X ray of 32KeV.
Said 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 said multiple tracks data analysis spectrometer connects said signal transmission system; Signal after said master control system is handled multiple tracks data analysis spectrometer is transferred to data processing and separates spectra system through said signal transmission system.
Said multiple tracks data analysis spectrometer carries out A/D conversion and Digital Signal Analysis to the signal of gathering; The absorption peak of the X ray of said data processing and the said 32KeV of spectrum unscrambling systematic analysis obtains the ash content of coal response; Ability gamma rays 600KeV full energy peak obtains the mass thickness response of coal in the analysis, and said ash content of coal content and mass thickness response are all carried out online demonstration through display system.
Said automatic dust unloading control system comprises automatic ash-discharging valve, speed reduction unit and screw motor, and said automatic ash-discharging valve is a star-shaped ash unloading valve, comprises housing, impeller and end cap; Said screw motor drives said wheel rotation through shaft coupling, evenly takes the material on said housing top to bottom.
Be connected with amplifier between said ray detector and the said multiple tracks data analysis spectrometer, said ray detector is NaI scintillation detector or lanthanum bromide detector, and said amplifier is a photomultiplier.
Said coal sample storehouse is 0.5～2 minute through the time interval of funnel samples of coal pulled.
In sum; The present invention utilize many can the gamma ray spectrum signal in receiving to the data analysis spectrometer; The ash content of the change-detection coal of the X ray absorption peak through analyzing the 32KeV obtained; The mass density of the change-detection coal through detecting its full energy peak and Compton platform is revised because the influence that the Coal Quality variable density is brought effectively raises the ash content measuring stability through mass density; And effectively reduced the use of low energy radioactive source, a large amount of saving costs.
Should be noted that at last: above embodiment is only in order to technical scheme of the present invention to be described but not to its restriction; Although the present invention has been carried out detailed explanation with reference to the foregoing description; Under the those of ordinary skill in field be to be understood that: still can specific embodiments of the invention make amendment or be equal to replacement; And do not break away from any modification of spirit and scope of the invention or be equal to replacement, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (14)
1. coal ash content detector based on single radioactive source; Said pick-up unit comprises container, detecting device and automatically controlled machine; It is characterized in that: said container comprises coal sample storehouse, funnel and is positioned at the automatic pumping board of bottom, said coal sample storehouse; Said automatic pumping board is axial vertical with said coal sample storehouse, and said automatic pumping board connects automatic dust unloading control system, ability gamma source Cs-137, ray detector and multiple tracks data analysis spectrometer during said detecting device comprises; Coal sample in the gamma photons irradiation coal sample storehouse of ability gamma source Cs-137 emission in said; Said ray detector collection sees through the middle ability gamma ray spectrum signal of coal sample; The output terminal of said ray detector connects the input end of said multiple tracks data analysis spectrometer, and the output terminal of said multiple tracks data analysis spectrometer connects said automatically controlled machine.
2. the coal ash content detector based on single radioactive source according to claim 1 is characterized in that: top, said coal sample storehouse is provided with and connects the measurement position inlet that Sampling Machine is abandoned the appearance outlet, and its underpart is provided with the measurement position outlet that connects automatic dust unloading control system.
3. the coal ash content detector based on single radioactive source according to claim 1; It is characterized in that: can be positioned in the protection body of source by gamma source Cs-137 in said; Be provided with collimating aperture in the protection body of said source; The central axis of said collimating aperture and said ray detector is on same horizontal line, and the hole depth of said collimating aperture is 5～6cm, and the aperture is 1cm.
4. the coal ash content detector based on single radioactive source according to claim 3 is characterized in that: said source protection body is positioned at a side in said coal sample storehouse, and said ray detector is positioned at the opposite side in said coal sample storehouse.
5. the coal ash content detector based on single radioactive source according to claim 3 is characterized in that: the inside of said source protection body is for plumbous, and the thickness of said lead is greater than 6cm.
6. the coal ash content detector based on single radioactive source according to claim 5; It is characterized in that: the thickness of said source protection body shell is 1cm; Said shell be by carbon content be 0.10%, silicone content is 0.08%, manganese content is 0.065%, phosphorus content is 0.030%, sulfur content is 0.018%, chromium content is 15.6%, surplus is the alloy preparation of iron, described percentage is percent by weight.
7. the coal ash content detector based on single radioactive source according to claim 3; It is characterized in that: said collimating aperture is built-in with thin slice; Can place on the said thin slice by gamma source Cs-137 in said; The distance in the aperture of itself and said collimating aperture is 0.5cm, and the distance of said thin slice and said collimating aperture bottom is 0.1mm.
8. the coal ash content detector based on single radioactive source according to claim 7 is characterized in that: said thin slice is spun glass or tygon grog sheet.
9. the coal ash content detector based on single radioactive source according to claim 7 is characterized in that: the coal sample in the gamma photons irradiation coal sample storehouse of ability gamma source Cs-137 emission in said produces the X ray of 32KeV.
10. the coal ash content detector based on single radioactive source according to claim 1 is characterized in that: said 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 said multiple tracks data analysis spectrometer connects said signal transmission system; Signal after said master control system is handled multiple tracks data analysis spectrometer is transferred to data processing and separates spectra system through said signal transmission system.
11. the coal ash content detector based on single radioactive source according to claim 9; It is characterized in that: said multiple tracks data analysis spectrometer carries out A/D conversion and Digital Signal Analysis to the signal of gathering; The absorption peak of the X ray of said data processing and the said 32KeV of spectrum unscrambling systematic analysis obtains the ash content of coal response; Ability gamma rays 600KeV full energy peak obtains the mass thickness response of coal in the analysis, and said ash content of coal content and mass thickness response are all carried out online demonstration through display system.
12. the coal ash content detector based on single radioactive source according to claim 1; It is characterized in that: said automatic dust unloading control system comprises automatic ash-discharging valve, speed reduction unit and screw motor; Said automatic ash-discharging valve is a star-shaped ash unloading valve, comprises housing, impeller and end cap; Said screw motor drives said wheel rotation through shaft coupling, evenly takes the material on said housing top to bottom.
13. the coal ash content detector based on single radioactive source according to claim 1; It is characterized in that: be connected with amplifier between said ray detector and the said multiple tracks data analysis spectrometer; Said ray detector is NaI scintillation detector or lanthanum bromide detector, and said amplifier is a photomultiplier.
14. the coal ash content detector based on single radioactive source according to claim 1 is characterized in that: said coal sample storehouse is 0.5～2 minute through 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 true CN102778466A (en) | 2012-11-14 |
| CN102778466B 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) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103399024A (en) * | 2013-07-23 | 2013-11-20 | 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 |
| CN111855711A (en) * | 2020-09-10 | 2020-10-30 | 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 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103399024A (en) * | 2013-07-23 | 2013-11-20 | 中国矿业大学 | Experiment table for automatically identifying coal-gangue mixing degree |
| 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 |
| CN111855711A (en) * | 2020-09-10 | 2020-10-30 | 天津美腾科技股份有限公司 | Lump coal quality detection method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102778466B (en) | 2015-11-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102095744B (en) | Three-energy coal ash content online monitoring device | |
| CN101603929B (en) | Device for detecting compositions of coal on conveying belt in real time | |
| CN101349661B (en) | Method for on-line detecting coal ashes on belt | |
| CN101349660A (en) | On-line analysis detection method of mine material iron ore grade | |
| CN102778466B (en) | A kind of coal ash content detector based on single radioactive source | |
| CN102749345B (en) | Multipoint type detection apparatus for ash content of coal | |
| CN103852475A (en) | Multichannel potassium measuring instrument based on gamma ray | |
| CN101858985A (en) | Multifunctional rare earth product radioactivity detecting instrument based on composite detector | |
| CN101349658B (en) | Fast analysis method of coal ash separating line | |
| CN101907582B (en) | Full section scanning on-line detection device | |
| CN105487100A (en) | Fixed-type plastic crystal potassium tester | |
| Gong et al. | An online method combining a thermal conversion elemental analyzer with isotope ratio mass spectrometry for the determination of hydrogen isotope composition and water concentration in geological samples | |
| CN109557575A (en) | A kind of neutron multiplicity measuring device and its application method | |
| CN102749344B (en) | A kind of coal ash detection method based on single radioactive source | |
| CN102778470B (en) | Multiple-point coal ash detection method | |
| CN102736533B (en) | Sampling, preparation and analysis management method for coal as received in thermal power plant | |
| CN204008454U (en) | Portable near infrared spectrometer for detection of mould index in storage paddy | |
| CN202837182U (en) | Atomic fluorescence spectrophotometer optical system | |
| CN2453436Y (en) | Online analysing device for components in coal fed into furnace of power plant | |
| CN201780277U (en) | On-line detection device with full-section scanning effect | |
| CN113484895B (en) | Alpha surface pollution detector and detection method for high radon background | |
| CN109633732A (en) | A kind of measuring device | |
| Hilal et al. | Investigation of chemical composition and moisture content for different materials on the attenuation of γ rays | |
| CN103837559B (en) | The quick sulphur meter of many target scans formula | |
| CN101446562A (en) | Three-element dual alkalinity analysis system |
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. |