CN201207026Y - Radioactive aerosol generating and sampling apparatus in radon chamber - Google Patents
Radioactive aerosol generating and sampling apparatus in radon chamber Download PDFInfo
- Publication number
- CN201207026Y CN201207026Y CNU200820114472XU CN200820114472U CN201207026Y CN 201207026 Y CN201207026 Y CN 201207026Y CN U200820114472X U CNU200820114472X U CN U200820114472XU CN 200820114472 U CN200820114472 U CN 200820114472U CN 201207026 Y CN201207026 Y CN 201207026Y
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- radon chamber
- box
- radon
- gasoloid
- baffle
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Abstract
The utility model relates to radioactivity sampling testing field and in particular relates to a radon chamber radioactive aerosol generating and sampling device. The radon chamber radioactive aerosol generating and sampling device comprises a radon chamber main case, and a sampler and a gas pump which are communicated with the radon chamber main case through a duct, and further comprises an aerosol baffle-box which is communicated with the radon chamber main case in double directions through a two-way duct. The aerosol baffle-box is provided with an inlet duct and an outlet duct. The other end of the inlet duct is connected with an aerosol generator. On-off devices are arranged on the aerosol baffle-box, the aerosol inlet duct and the outlet duct of the aerosol baffle-box, and the two-way duct of the radon chamber main case. By controlling the aerosol generator and the aerosol baffle-box, the radon chamber radioactive aerosol generating and sampling device can generate aerosol with certain concentration and grain size and then enables the aerosol to be evenly mixed with the gas inside the radon chamber to form radioactive aerosol. The utility model provides a set of practical device for simulating atmosphere radioactive contamination in a radon chamber and for quantificationally analyzing the condition of aerosol and radon daughters.
Description
Technical field
The utility model relates to radioactivity sampled measurements field, is specifically related to a kind of radon chamber radioaerosol and takes place and sampling apparatus.
Background technology
Radon chamber is to discharge radioactive radon gas in a closed container, perhaps thoron, and the device that can regulate and control the concentration of radon gas.Its principle is to replenish radon gas according to certain flow rate to radon chamber by flow gas solid radon need, when the radon indoor radon concentration runs up to the aimed concn of setting, stops to mend radon to radon chamber.After stopping to mend radon, according to the radioactivity decay rule, radon chamber radon concentration will change, therefore need be according to the rate of decay of radon, the leakage rate of system and the influence factors such as absorption of device, in the scope that concentration change allows, mend radon, thereby dynamically keep the uniform and stable of radon Indoor Niton and daughter concentration thereof, to satisfy the calibrating and measuring needs of radon and measurement of radon daughters instrument.
Radon
222Rn (or thoron
220Rn) being a kind of radgas, is by radium
226Ra (or
224Ra) decay produces.Itself can decay radon or thoron too, becomes solid-state daughter
218Po,
214Bi,
214Po (or
216Po,
212Pb,
212Bi) etc., these daughters are adsorbed on the aerosol particle sub-surface and just form radioaerosol.There is certain density gasoloid in the nature air, when it with form radioaerosol probably after radgas radon or thoron mix, when animal body is breathed it is sucked lung, the daughter meeting forms for a long time interior radiation damage attached on the tunica mucosa tracheae.Variable concentrations, the gasoloid of different-grain diameter distribution and different material composition there are differences the characterization of adsorption of radon daughter, and along with migration and the sedimentation of gasoloid in atmosphere, radioaerosol presents comparatively complicated Changing Pattern.In radon chamber, add the gasoloid of finite concentration and size distribution, and make it evenly to mix, just can compare the situation that radioactive radon pollutes in the accurate simulated air quantitatively with radon.This technology can be applicable to radon and fields such as daughter research, the calibrating of radon measurement instrument, atmospheric aerosol experiment and biological exposure experiment.
The simple mechanism of non-quantitative is generally adopted in the modeling effort of present domestic radioaerosol environment, as combustion fumes, the organic mist of oil of injection etc.Its device generally can't accurately be controlled the concentration of radioaerosol, size distribution etc., thereby is difficult to radon daughter and radioaerosol are provided environmental simulation more accurately.
Summary of the invention
The purpose of this utility model is to provide a kind of gasoloid that can produce given concentration and size distribution, make gasoloid and radon chamber gas be uniformly mixed to form radioaerosol, and the radon chamber radioaerosol that the adsorbed radon daughter of radioaerosol in the radon chamber is sampled is taken place and sampling apparatus.
Realize the technical scheme of the utility model purpose: sampling thief and air pump that it comprises the radon chamber main box, is communicated with the radon chamber main box by pipeline, it comprises that also the gasoloid baffle-box is provided with inlet duct and outlet conduit by two-way pipeline and the diconnected gasoloid baffle-box of radon chamber main box.The other end of described inlet duct links to each other with aerosol generator.The gasoloid inlet duct and the outlet conduit of gasoloid baffle-box, and on the two-way pipeline of gasoloid baffle-box and radon chamber main box headstock gear is installed all.
Aforesaid radon chamber radioaerosol takes place and sampling apparatus, and gas stirring device is equipped with in gasoloid baffle-box inside.
Aforesaid radon chamber radioaerosol takes place and sampling apparatus, and headstock gear is an electromagnetic valve.
Aforesaid radon chamber radioaerosol takes place and sampling apparatus, on the two-way pipeline of gasoloid baffle-box and radon chamber main box air pump is installed.
Aforesaid radon chamber radioaerosol takes place and sampling apparatus, and pipeline is the pressure-resistant pipeline of round section.
Aforesaid radon chamber radioaerosol takes place and sampling apparatus, on the two-way pipeline of gasoloid baffle-box and radon chamber main box air pump is installed.
Aforesaid radon chamber radioaerosol takes place and sampling apparatus, and pipeline is the pressure-resistant pipeline of round section.
Effect of the present utility model is: device is by control aerosol generator and the headstock gear that is installed on gasoloid baffle-box inlet, the outlet conduit, can produce the gasoloid of given concentration and size distribution at the gasoloid baffle-box, gasoloid is evenly mixed with radon chamber gas, form radioaerosol.Device has also designed a cover membrane filtration sampling circuit outside radon chamber, can sample to radioaerosol gas in the radon chamber, cooperates the alpha energy spectrum instrument to analyze the situation of radon Indoor Niton decay back daughter.Thereby be radioactive contamination situation in the simulating nature atmosphere in radon chamber, and provide a cover practicable device for analyzing gasoloid and radon daughter situation quantitatively.
Description of drawings
Fig. 1 is that a kind of radon chamber radioaerosol takes place and the sampling apparatus synoptic diagram.
Among the figure: 1. radon chamber main box; 2. gasoloid baffle-box; 3. sampling thief; 4. air pump; 5. air pump; 6. pipeline; 7. headstock gear; 8. aerosol generator; 9. inlet duct; 10 outlet conduits; 11. two-way pipeline.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is further described.
As shown in Figure 1, comprise radon chamber main box 1, the sampling thief 3 and the air pump 4 that are communicated with radon chamber main box 1 by pipeline 6.It comprises that also gasoloid baffle-box 2 is provided with inlet duct 9 and outlet conduit 10 by two-way pipeline 11 and radon chamber main box 1 diconnected gasoloid baffle-box 2, and the other end of described inlet duct 9 links to each other with aerosol generator 8.The gasoloid inlet duct 9 of gasoloid baffle-box 2 and outlet conduit 10, and on the two-way pipeline 11 of gasoloid baffle-box 2 and radon chamber main box 1 headstock gear 7 is installed all.Gas stirring device is equipped with in gasoloid baffle-box 2 inside.On the two-way pipeline 11 of gasoloid baffle-box 2 and radon chamber main box 1 air pump 5 is installed.
This device can be divided into gasoloid buffering uniform parts and gasoloid sampling by filtration part.Gasoloid buffering uniform parts comprises gasoloid baffle-box 2 and radon chamber main box 1.Radon chamber main box 1 is a kind of device of current public use, its adopts that tempered glass, organic glass or stainless steel make airtight and container with certain heat insulating effect, and volume is 1～25m
3Not etc.Radon chamber main box 1 has functions such as adding radon, constant radon concentration and automatic constant-temperature constant humidity automatically.Gasoloid baffle-box 2 can adopt with radon chamber main box 1 identical materials and make, and volume is 0.3～3m
3Not etc., but it does not have the humiture regulatory function.Be connected with gasoloid inlet duct 9 and gasoloid outlet conduit 10 on the gasoloid baffle-box 2, and and radon chamber main box 1 between gas flow to, flow out two-way pipeline 11.All pipelines that adopt are the pressure-resistant pipeline of round section, can be steel pipe, hard plastic tube or reinforcement soft plastic pipe.Gasoloid inlet duct 9 and gasoloid outlet conduit 11, and the gas between gasoloid baffle-box 2 and the radon chamber main box 1 flows to, flows out two-way pipeline 11 and all add manually-operated gate or electromagnetic valve 7, preferably can be by the electromagnetic valve 7 of electrical system control.Gasoloid sampling by filtration part is made up of sampling thief 3, air pump 4 and connecting tube 6, is installed on the bypass gas circuit of radon chamber main box 1, constitutes airtight circulation gas circuit with radon chamber main box 1.Gasoloid baffle-box 2 utilizes its fixing volume, can cushion the gasoloid gas from aerosol generator 8 inputs and evenly, it be formed determine the concentration gasoloid.Gasoloid baffle-box 2 volumes can add gas stirring devices such as fan, blade when big in inside, to improve its inner homogeneity.Gasoloid baffle-box 2 and the two-way pipeline 11 of the turnover between the radon chamber main box 1 are used for the gas in the gasoloid baffle-box 2 is mixed with gas in the radon chamber main box 1, with the formation radioaerosol.Generally on gasoloid baffle-box 2 and the two-way pipeline 11 of the turnover between the radon chamber main box 1, be connected in series air pump 5, to quicken two gas exchange between the casing.
According to prior art, can pack into the miillpore filter of certain diameter of sampling thief 3 inside, the micropore size of filter membrane can directly be selected according to the aerosol particle that will filter, so that the gasoloid of different-grain diameter is carried out classified filtering.Air pump 4 is for having the closed type aspiration pump of air intake opening and gas outlet, and the selection of air pump flow can be decided according to the size of radon chamber main box 1 volume, and considers the intensity of selected filter membrane, and too big flow may cause the filter membrane breakage.Air pump 4 can be connected in series a gas meter, with accurate mensuration sampling flow.Sampling flow multiply by the volume of gas that the air pump time of bleeding just filtered, and this volume is to estimate radioaerosol concentration, or an important indicator of other parameter.
The job step of device described in the utility model is as follows:
1. open the electromagnetic valve 7 on aerosol generator 8, gasoloid inlet duct 9 and the gasoloid outlet conduit 10, make the gasoloid gas of finite concentration and size distribution flow into gasoloid baffle-box 2;
2. through after full and uniform, form the gasoloid of determining concentration and size distribution in the gasoloid baffle-box 2.Close the electromagnetic valve 7 on aerosol generator 8, gasoloid inlet duct 9 and the gasoloid outlet conduit 10 this moment, open the electromagnetic valve 7 on the two-way pipeline 11 between gasoloid baffle-box 2 and the radon chamber main box 1, and the air pump 5 that is connected in series with it, make between gasoloid baffle-box 2 and the radon chamber main box 1 and carry out gas exchange;
3. through after full and uniform, close the electromagnetic valve 7 on the two-way pipeline 11 between gasoloid baffle-box 2 and the radon chamber main box 1, and the air pump 5 that is connected in series with it;
4. the sampling membrane of packing in sampling thief 3 is opened the aspiration pump 4 in the sampling circuit, begins circulation and bleeds, and record bleed time and flow are converted into sampling volume;
5. close aspiration pump 4 in the sampling circuit, open sampling thief 3, take out filter membrane.
Just can finish the generation and the sampling of radioaerosol by above-mentioned steps, the filter membrane sample can be placed the alpha energy spectrum instrument carry out spectral measurement at last, the research of the line correlation of going forward side by side, experiment.
Claims (7)
1. a radon chamber radioaerosol takes place and sampling apparatus, comprise radon chamber main box (1), the sampling thief (3) and the air pump (4) that are communicated with radon chamber main box (1) by pipeline (6), it is characterized in that: it also comprises by two-way pipeline (11) and the diconnected gasoloid baffle-box of radon chamber main box (1) (2), gasoloid baffle-box (2) is provided with inlet duct (9) and outlet conduit (10), the other end of described inlet duct (9) links to each other with aerosol generator (8), the gasoloid inlet duct (9) of described gasoloid baffle-box (2) and outlet conduit (10), and on the two-way gas circulation pipeline (11) of gasoloid baffle-box (2) and radon chamber main box (1) headstock gear (7) is installed all.
2. take place and sampling apparatus according to the described radon chamber radioaerosol of claim 1, it is characterized in that: gas stirring device is equipped with in described gasoloid baffle-box (2) inside.
3. take place and sampling apparatus according to claim 1 or 2 described radon chamber radioaerosols, it is characterized in that: described headstock gear (7) is an electromagnetic valve.
4. take place and sampling apparatus according to claim 1 or 2 described radon chamber radioaerosols, it is characterized in that: on the two-way gas circulation pipeline (11) of described gasoloid baffle-box (2) and radon chamber main box (1) air pump (5) is installed.
5. take place and sampling apparatus according to the described radon chamber radioaerosol of claim 4, it is characterized in that: described pipeline is the pressure-resistant pipeline of round section.
6. take place and sampling apparatus according to the described radon chamber radioaerosol of claim 3, it is characterized in that: on the two-way gas circulation pipeline (11) of described gasoloid baffle-box (2) and radon chamber main box (1) air pump (5) is installed.
7. take place and sampling apparatus according to the described radon chamber radioaerosol of claim 6, it is characterized in that: described pipeline is the pressure-resistant pipeline of round section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820114472XU CN201207026Y (en) | 2008-05-20 | 2008-05-20 | Radioactive aerosol generating and sampling apparatus in radon chamber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820114472XU CN201207026Y (en) | 2008-05-20 | 2008-05-20 | Radioactive aerosol generating and sampling apparatus in radon chamber |
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| CN201207026Y true CN201207026Y (en) | 2009-03-11 |
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| CNU200820114472XU Expired - Fee Related CN201207026Y (en) | 2008-05-20 | 2008-05-20 | Radioactive aerosol generating and sampling apparatus in radon chamber |
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| CN101769834B (en) * | 2009-12-30 | 2011-08-24 | 深圳市建筑科学研究院有限公司 | Test chamber for radon exhalation rate in soil |
| CN102252875A (en) * | 2011-06-01 | 2011-11-23 | 山东大学 | Externally hanging type atmospheric aerosol aviation airflow guide cover of airplane |
| CN101598800B (en) * | 2009-07-10 | 2012-02-22 | 衡阳师范学院 | Method of uniformly mixing gases in measuring chamber of emanometer and device thereof |
| CZ303597B6 (en) * | 2011-12-13 | 2013-01-02 | Ceské vysoké ucení technické v Praze, Fakulta stavební | Device for exposing polymeric and damp-proof materials to radon |
| CZ303712B6 (en) * | 2011-12-13 | 2013-03-27 | Ceské vysoké ucení technické v Praze, Fakulta stavební | Apparatus for exposing polymeric and damp-proof materials to radon under high relative humidity of air |
| CN103487824A (en) * | 2013-09-26 | 2014-01-01 | 东华理工大学 | Radon daughter sampling device based on high-voltage corona discharge |
| CN105116433A (en) * | 2015-09-24 | 2015-12-02 | 东华理工大学 | Portable radon measuring instrument calibrator |
| CN105549065A (en) * | 2015-12-09 | 2016-05-04 | 中国船舶重工集团公司第七一九研究所 | Artificial radioactive aerosol source machine |
| CN105675813A (en) * | 2016-01-19 | 2016-06-15 | 太原理工大学 | Experiment device for simulating radon conveying performed by geogas |
| CN105928854A (en) * | 2016-04-20 | 2016-09-07 | 中国原子能科学研究院 | Apparatus for controllable micropressure tritium adsorption and on-line testing of concentration and depth distribution of tritium in material |
| CN108801711A (en) * | 2017-05-05 | 2018-11-13 | 中国辐射防护研究院 | A kind of aerosol sampler quickly connected |
| CN109509567A (en) * | 2018-09-21 | 2019-03-22 | 中国辐射防护研究院 | The device and method of simulation post-processing organic phase combustion emissions aerosol release |
| CN109709008A (en) * | 2018-12-03 | 2019-05-03 | 中国辐射防护研究院 | Intercepting and capturing and transposition experimental method of the high-temperature heating formula radioaerosol in plant |
| CN109870392A (en) * | 2019-03-25 | 2019-06-11 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | A kind of naturally radioactive aerosol coagulation simultaneously eliminates experimental system |
| US20200043622A1 (en) * | 2017-03-23 | 2020-02-06 | Hirosaki University | Radioactive fine particle manufacturing system, and radioactive fine particle manufacturing method |
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2008
- 2008-05-20 CN CNU200820114472XU patent/CN201207026Y/en not_active Expired - Fee Related
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| CN101598800B (en) * | 2009-07-10 | 2012-02-22 | 衡阳师范学院 | Method of uniformly mixing gases in measuring chamber of emanometer and device thereof |
| CN101769834B (en) * | 2009-12-30 | 2011-08-24 | 深圳市建筑科学研究院有限公司 | Test chamber for radon exhalation rate in soil |
| CN102252875A (en) * | 2011-06-01 | 2011-11-23 | 山东大学 | Externally hanging type atmospheric aerosol aviation airflow guide cover of airplane |
| CZ303597B6 (en) * | 2011-12-13 | 2013-01-02 | Ceské vysoké ucení technické v Praze, Fakulta stavební | Device for exposing polymeric and damp-proof materials to radon |
| CZ303712B6 (en) * | 2011-12-13 | 2013-03-27 | Ceské vysoké ucení technické v Praze, Fakulta stavební | Apparatus for exposing polymeric and damp-proof materials to radon under high relative humidity of air |
| CN103487824A (en) * | 2013-09-26 | 2014-01-01 | 东华理工大学 | Radon daughter sampling device based on high-voltage corona discharge |
| CN103487824B (en) * | 2013-09-26 | 2016-07-06 | 东华理工大学 | A kind of radon daughter sampling apparatus based on high-voltage corona discharge |
| CN105116433A (en) * | 2015-09-24 | 2015-12-02 | 东华理工大学 | Portable radon measuring instrument calibrator |
| CN105549065B (en) * | 2015-12-09 | 2018-12-18 | 中国船舶重工集团公司第七一九研究所 | A kind of artificial radioactive aerosol source machine |
| CN105549065A (en) * | 2015-12-09 | 2016-05-04 | 中国船舶重工集团公司第七一九研究所 | Artificial radioactive aerosol source machine |
| CN105675813A (en) * | 2016-01-19 | 2016-06-15 | 太原理工大学 | Experiment device for simulating radon conveying performed by geogas |
| CN105928854A (en) * | 2016-04-20 | 2016-09-07 | 中国原子能科学研究院 | Apparatus for controllable micropressure tritium adsorption and on-line testing of concentration and depth distribution of tritium in material |
| US20200043622A1 (en) * | 2017-03-23 | 2020-02-06 | Hirosaki University | Radioactive fine particle manufacturing system, and radioactive fine particle manufacturing method |
| US11688525B2 (en) * | 2017-03-23 | 2023-06-27 | Hirosaki University | Radioactive fine particle manufacturing system and method |
| CN108801711A (en) * | 2017-05-05 | 2018-11-13 | 中国辐射防护研究院 | A kind of aerosol sampler quickly connected |
| CN109509567A (en) * | 2018-09-21 | 2019-03-22 | 中国辐射防护研究院 | The device and method of simulation post-processing organic phase combustion emissions aerosol release |
| CN109709008A (en) * | 2018-12-03 | 2019-05-03 | 中国辐射防护研究院 | Intercepting and capturing and transposition experimental method of the high-temperature heating formula radioaerosol in plant |
| CN109870392A (en) * | 2019-03-25 | 2019-06-11 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | A kind of naturally radioactive aerosol coagulation simultaneously eliminates experimental system |
| CN109870392B (en) * | 2019-03-25 | 2023-12-19 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Natural radioactive aerosol electrocoagulation and elimination experiment system |
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| CN112666049B (en) * | 2020-11-24 | 2024-03-01 | 中国辐射防护研究院 | Platform and method for simulating aerosol multi-compartment transportation of post-treatment fire accident |
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Granted publication date: 20090311 Termination date: 20100520 |