CN105372694A - Water environment radionuclide activity profile measurement system - Google Patents
Water environment radionuclide activity profile measurement system Download PDFInfo
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- CN105372694A CN105372694A CN201510916241.5A CN201510916241A CN105372694A CN 105372694 A CN105372694 A CN 105372694A CN 201510916241 A CN201510916241 A CN 201510916241A CN 105372694 A CN105372694 A CN 105372694A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/167—Measuring radioactive content of objects, e.g. contamination
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Abstract
The invention relates to a water environment radionuclide activity profile measurement system and belongs to the nuclear radiation monitoring field. The water environment radionuclide activity profile measurement system includes a detection unit, a sealing unit, a signal transmission module, a pressure sensing module, an armoring module and a data processing module; the detection module is provided with a detector, a lower temperature maintaining module, a preamplifier and a conversion module; the low temperature maintaining module is used for making the detector maintained in a low-temperature state; the conversion module is used for converting current outputted by the detector into high-voltage output; the output end of the detector is connected with the input end of the signal transmission module through the preamplifier; the sealing unit is used for detecting the sealing of the detection module and connects the detection module and the signal transmission module; the output end of the signal transmission module is connected with the input end of the data processing module; the pressure sensing module is connected with the signal transmission module; the armoring protection module is used for the protection of the signal transmission module; the input end of a measurement control module of the data processing module is connected with the output end of the signal transmission module; and the output end of the measurement control module is connected with the input end of a spectrum analysis module.
Description
Technical field
The present invention relates to nuclear radiation monitoring, especially relate to a kind of water body environment radionuclide specific activity profile sampling towed system.
Background technology
Emergency radiological monitoring is that nuclear emergency prepares and one of requisite emergency response action in response, its role is to as the detecting of radiation accident, to evaluate and decision-making that accident control alleviates action and urgent radiation protection action provides foundation.At present, China is the countries with fastest developing speed of nuclear energy uses in the world, current nuclear power station existing 6 run and 3 building.According to the nuclear power medium-term and long-term plans suggestion for revision that 2009 propose, running installed capacity to the year two thousand twenty China nuclear power is 7,000 ten thousand kilowatts.China's major part nuclear power station is positioned at the coastal region in east China, nuclear power plant enter radioactive fast monitored of Adjacent Sea and evaluation method be marine management department, the problem paid close attention to of local government, the public, nuclear power plant owner and related researcher.
On March 11st, 2011, there is Richter scale 9.0 grades of violent earthquakes and strong tsunami in northeastern Japan portion, and then the Fukushima nuclear power station radiomaterial leakage accident caused causes global concern.After nuclear accident occurs, radiomaterial is discharged in environment in a large number, creates impact to Environment Ecological Safe and public health, and is spread to the whole world by the approach such as ocean, air.How the diffusion of rapid evaluation radiomaterial in ocean and migration process become the important content of nuclear emergency situation and Marine Environmental Monitoring at ordinary times.Set up marine environment radioactivity method for quick, development fast monitored device just seems particularly important and urgent under the background of Fukushima core crisis.
The method that the monitoring of water body radioactive environment adopts is divided into two kinds of methods: gamma spectrum measuring method and laboratory sample analysis on the spot under water.Wherein, water body on the spot gamma energy spectrum method can only be used for the long-time continuous measurement of fixed bed position, cannot meet the on-the-spot demand understanding radioactive nuclide Soil profile and diffusion mobility situation in water body environment fast; And laboratory sample analytical approach gathers water body example in a large number due to needs, cause the layer position of measurement limited, and, the sample gathered needs by after radiochemistry process in early stage enriched sample, could measure with Low background gamma spectrometer, the efficiency of this process is very low, is equally also difficult to the demand meeting on-site rapid measurement.
Along with the fast development that China's nuclear energy and nuclear technology utilize, research can the Method and Technology of fast quantitative analysis monitoring marine environment radioactive nuclide, to have become in China's environmental monitoring the active demand in particularly nuclear emergency situation, has had very important significance.
Summary of the invention
The object of this invention is to provide a kind of measurement that can effectively realize water body environment radionuclide specific activity Soil profile, promote the water body environment radionuclide specific activity profile sampling towed system to water body environment radionuclide measurement efficiency.
The present invention includes detecting module, sealing unit, signal transmission module, pressure sensor block, armored module and data processing module;
Described detecting module is provided with detector, low temperature keeps module, prime amplifier and modular converter; Described detector is used for detectable radionuclide; Described low temperature keeps module to be used for making detector remain on low-temperature working state by electronic impulse refrigeration modes; Described modular converter is used for converting the electric current that detector exports to high voltage style and exports, to improve the signal to noise ratio (S/N ratio) of detector; The radioactive nuclide collection signal of described detector exports termination prime amplifier input end, and prime amplifier exports termination signal transmission module input end;
Described sealing unit is used for the sealing of detecting module, and is connected with signal transmission module by detecting module with plug and play interface shape;
Described signal transmission module exports termination data processing module input end;
Described pressure sensor block is used for the display detector place degree of depth in real time, is connected in sealing unit outside with signal transmission module;
Described armored module is used for the protection to signal transmission module in radioactive nuclide signal acquisition process, avoids impaired;
Described data processing module is provided with Survey control module and analysis of spectrum module; The output terminal of the input termination signal transmission module of Survey control module, the output termination analysis of spectrum module input of Survey control module.
The material of described detector includes but not limited at least one in pottery, HpGe, lanthanum bromide, silicon, germanium, tellurium zinc cadmium etc.
Described sealing unit is made up of high strength, material that is high pressure resistant, low-activity, and its shape of cross section can be the shape such as circular, square.The material of sealing unit includes but not limited to the material such as carbon fiber, aluminium alloy.
Described signal transmission module can adopt the cable of high strength, high conductivity to form, and the material of described cable includes but not limited to the materials such as copper core; The length of cable can design according to actual needs.
Described armored module can be wound around by the wire material of high strength, high tenacity and form.
Compared with prior art, the present invention has the following advantages:
(1) achieve the fast monitored of water body environment radionuclide specific activity Soil profile, effectively improve the ageing of monitoring.Achieve the radioactive nuclide quantitative measurment of underwater high-resolution;
(2) utilize the shielding properties of seawater self, avoid and use traditional shield technology;
(3) the Soil profile situation of radioactive nuclide is under water grasped in real time.
Accompanying drawing explanation
Fig. 1 is the structure composition frame chart of the embodiment of the present invention.
Fig. 2 is the working state schematic representation of the embodiment of the present invention.
Embodiment
Following examples will the present invention will be further described by reference to the accompanying drawings.
See Fig. 1 and 2, the embodiment of the present invention comprises detecting module, sealing unit 2, signal transmission module 3, pressure sensor block 4, armored module 5 and data processing module 6.
Described detecting module is provided with detector 11, low temperature keeps module 12, prime amplifier 13 and modular converter 14; Described detector 11 is for detectable radionuclide; Described low temperature keeps module 12 for making detector remain on low-temperature working state by electronic impulse refrigeration modes; Described modular converter 14 converts high voltage style to for the electric current exported by detector and exports, to improve the signal to noise ratio (S/N ratio) of detector; The radioactive nuclide collection signal of described detector 11 exports termination prime amplifier 13 input end, and prime amplifier 13 exports termination signal transmission module 3 input end; Detecting module for the sealing of detecting module, and is connected with signal transmission module with plug and play interface shape by described sealing unit 2; Described signal transmission module 3 exports termination data processing module 6 input end; Described pressure sensor block 4 is for showing the detector 11 place degree of depth in real time; Described armored module 5 in radioactive nuclide signal acquisition process to the protection of signal transmission module 3, avoid impaired.Described data processing module 6 is provided with Survey control module and analysis of spectrum module; The output terminal of the input termination signal transmission module 3 of Survey control module, the output termination analysis of spectrum module input of Survey control module.
The material of described detector includes but not limited at least one in HpGe, lanthanum bromide, silicon, germanium, tellurium zinc cadmium etc.
Described sealing unit is made up of high strength, material that is high pressure resistant, low-activity, and its shape of cross section can be the shape such as circular, square.The material of sealing unit includes but not limited to the material such as carbon fiber, aluminium alloy.
Described signal transmission module can adopt the cable of high strength, high conductivity to form, and the material of described cable includes but not limited to the materials such as copper core; The length of cable can design according to actual needs.
Described armored module can be wound around by the wire material of high strength, high tenacity and form.
After the sealing unit and detecting module that are connected to signal transmission module enter the water surface, measurement pattern is started by data processing module, sealing unit and detecting module transfer to deep layer gradually and subsequent recovery process in, the signal detected is delivered to data processing module by signal transmission module by detector, and carry out data analysis, thus obtain the profile survey data of radioactive nuclide.
The present invention can rely on the Waterborne movable platforms such as ship base to carry out, and measurement procedure is as follows:
Before formally starting measurement, detecting module should be made to keep low-temperature condition to treat duty.Along with the release of boat-carrying winch, when detecting module enters below the water surface together with sealing unit, data processing module controls and starts measurement pattern, detecting module starts image data and obtained data is delivered to data processing module through signal transmission module, quantitative test is being carried out after nuclide identification, and obtain nucleic activity information, and carry out convergence analysis with the depth information that pressure transducer obtains, the final Soil profile situation obtaining radionuclide specific activity.When detecting module is about to get back to more than the water surface together with sealing unit, data processing module controls and closes measurement pattern.
Wherein, detecting module has automatic spectrum stabilization function, can the drift that causes of the effective compensation detector impact that is subject to the possible factors such as residing environment temperature, humidity, vibrations.The pulse signal that detector produces is through independent amplification, examination and shaping circuit, and unification is sent to Multi channel spectrum analysis unit.
Data processing module, when carrying out Radionuclide analysis, possesses automatic peak-seeking function, can provide nucleic information corresponding to full energy peak by syncaryon database, also can provide the activity in different measuring stage to the integration information of this stage degree of depth simultaneously.When carrying out activity concentration and measuring, need to carry out scale to the efficiency of measurement mechanism.According to embodiments of the invention, the present invention, on the basis of combined standard calibration source, takes the virtual efficiency calibration technology based on the methods availalbe such as monte carlo method, numerical computation method, realizes the efficiency calibration of measurement mechanism.
In FIG, marking 7 is plug and play interface.In fig. 2, mark 7 is plug and play interface, and 8 is boats and ships, and 9 is winch, and 10 is winch support, and P is sea.
Claims (7)
1. water body environment radionuclide specific activity profile sampling towed system, is characterized in that comprising detecting module, sealing unit, signal transmission module, pressure sensor block, armored module and data processing module;
Described detecting module is provided with detector, low temperature keeps module, prime amplifier and modular converter; Described detector is used for detectable radionuclide; Described low temperature keeps module to be used for making detector remain on low-temperature working state by electronic impulse refrigeration modes; Described modular converter is used for converting the electric current that detector exports to high voltage style and exports, to improve the signal to noise ratio (S/N ratio) of detector; The radioactive nuclide collection signal of described detector exports termination prime amplifier input end, and prime amplifier exports termination signal transmission module input end;
Described sealing unit is used for the sealing of detecting module, and is connected with signal transmission module by detecting module with plug and play interface shape;
Described signal transmission module exports termination data processing module input end;
Described pressure sensor block is used for the display detector place degree of depth in real time, is connected in sealing unit outside with signal transmission module;
Described armored module is used for the protection to signal transmission module in radioactive nuclide signal acquisition process, avoids impaired;
Described data processing module is provided with Survey control module and analysis of spectrum module; The output terminal of the input termination signal transmission module of Survey control module, the output termination analysis of spectrum module input of Survey control module.
2. water body environment radionuclide specific activity profile sampling towed system as claimed in claim 1, is characterized in that the material of described detector includes but not limited at least one in pottery, HpGe, lanthanum bromide, silicon, germanium, tellurium zinc cadmium.
3. water body environment radionuclide specific activity profile sampling towed system as claimed in claim 1, is characterized in that described sealing unit is made up of high strength, material that is high pressure resistant, low-activity, and its shape of cross section is circular or square.
4. water body environment radionuclide specific activity profile sampling towed system as claimed in claim 1, is characterized in that the material of described sealing unit includes but not limited to carbon fiber or aluminium alloy.
5. water body environment radionuclide specific activity profile sampling towed system as claimed in claim 1, is characterized in that described signal transmission module adopts the cable composition of high strength, high conductivity.
6. water body environment radionuclide specific activity profile sampling towed system as claimed in claim 5, is characterized in that the material of described cable includes but not limited to copper core.
7. water body environment radionuclide specific activity profile sampling towed system as claimed in claim 1, is characterized in that described armored module is wound around by the wire material of high strength, high tenacity and forms.
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| CN201510916241.5A CN105372694A (en) | 2015-12-10 | 2015-12-10 | Water environment radionuclide activity profile measurement system |
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Cited By (3)
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| CN108008439A (en) * | 2016-10-28 | 2018-05-08 | 福建宁德核电有限公司 | A kind of nuclear power plant's water body radiation monitoring system |
| CN108828652A (en) * | 2018-08-07 | 2018-11-16 | 江苏核电有限公司 | A kind of Radiation monitoring instrument protective device and its installation method |
| CN113625334A (en) * | 2021-08-03 | 2021-11-09 | 成都新核泰科科技有限公司 | Immersion type water body radioactivity real-time online monitoring system |
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| CN113625334A (en) * | 2021-08-03 | 2021-11-09 | 成都新核泰科科技有限公司 | Immersion type water body radioactivity real-time online monitoring system |
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Application publication date: 20160302 |