CN104596807B - Sampling measuring device and sampling measuring method of radioactive aerosol - Google Patents
Sampling measuring device and sampling measuring method of radioactive aerosol Download PDFInfo
- Publication number
- CN104596807B CN104596807B CN201510030726.4A CN201510030726A CN104596807B CN 104596807 B CN104596807 B CN 104596807B CN 201510030726 A CN201510030726 A CN 201510030726A CN 104596807 B CN104596807 B CN 104596807B
- Authority
- CN
- China
- Prior art keywords
- sampling
- probe
- measuring device
- head
- paper
- 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
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to a sampling measuring device of radioactive aerosol. The sampling measuring device comprises a sampling head and a sampling chamber which is connected with the sampling head in a sealing manner, wherein the sampling head is in a spherical shape, an air inlet is formed in the top wall of the sampling head, and a circular through hole is formed in the bottom wall of the sampling head; a conical probe guide cap is arranged in the sampling head, a conical top of the probe guide cap is arranged right below the air inlet, and a detector assembly is arranged below the probe guide cap; an air outlet pipe penetrating through the sampling chamber is arranged in the sampling chamber, the air outlet pipe is communicated with the circular through hole of the sampling head, a gap is formed between the air outlet pipe and the circular through hole, an automatic paper feeding device is arranged in the sampling chamber, and the automatic paper feeding device is provided with a piece of filter paper extending through the gap. The invention also provides a sampling measuring method. By adopting the sampling measuring device and the sampling measuring method, the loss of the radioactive aerosol in the sampling process is reduced, and the collection efficiency of the radioactive aerosol can be improved.
Description
Technical field
The present invention relates to the Radiation monitoring field of radioaerosol, and in particular to a kind of sampling of radioaerosol is surveyed
Amount devices and methods therefor.
Background technology
Prepare and separation, spentnuclear fuel post processing and the process of radwaste and disposal in nuclear facilities operation, nuclear fuel
During, radioaerosol microgranule may be produced.These gaseous materials can rapidly be permeated in air and pollute nuclear facilities
Surrounding, and then the radiation safety of personnel and environment can be affected, it is therefore desirable to the content of the radioaerosol is adopted
Sample is measured.
Existing radioaerosol sampling apparatuses are most of to only have sample collection function, it is impossible to surveyed in sampling
Amount.CN200520146803 discloses a kind of radioaerosol sampling and measuring device, and it is divested using particle diameter separation function
Impact of the radon thorium daughter to measurement radioaerosol.But, it is suffered from the drawback that：Sampling structure is complicated, and radioactivity gas
Sol particles and the daughter of radon thorium can not be completely separated, and cause the loss of radioactive aerosol particle；In addition, the radioaerosol
Radioactive aerosol particle in sampling and measuring device is liable to stick on the inner sleeve inwall of the measurement apparatus, causes radioactivity
The loss of particulate.Therefore the particle that the radioactive aerosol particle number for gathering on filter paper can not be represented truly in air
Number, also just cannot accurately obtain the content of radioaerosol in environment.
The content of the invention
In order to solve radioactive aerosol particle present in above-mentioned prior art occur in sampling process lose and lead
The inaccurate problem of measurement of cause, the present invention is intended to provide the sampling and measuring device and its method of a kind of radioaerosol.
The sampling and measuring device of the radioaerosol that the present invention is provided, including sampling head and be tightly connected with sampling head
Sampler chamber, wherein, the sampling head is provided with air inlet for spherical on the roof of the sampling head, circle is provided with diapire
Through hole；The probe fair water cone of taper is provided with the sampling head, the vertex of a cone of the probe fair water cone is arranged at the air inlet
Underface, probe fair water cone below be provided with detector assembly；Have through going out that the sampler chamber is arranged in the sampler chamber
Trachea, the escape pipe connects and has between manhole slit, sampling interior to be provided with to walk automatically with the manhole of sampling head
Paper device, is configured with the filter paper extended through slit on the automatic paper conveyer.In the apparatus of the present, adopted by spherical
Sample head is collected to the radioaerosol microgranule in air, with the reduction of the positive displacement arrangements internal diameter, in the horizontal stroke of bottom
Tangent plane product reaches minimum, and volume inside can cause vacuum effect with outside, produce certain pressure reduction, and air-flow accelerates, so as to increase
Suction velocity, gathers more radioaerosol microgranules, so as to increase collection and confinement of gases efficiency.
The sampling head the episphere housing and lower semisphere housing of fixed pin connection by consisting of.
O-ring seal is provided between episphere housing and lower semisphere housing.
The inwall of the sampling head is through polishing.
The detector assembly includes probe group, probe, probing shell and probe closure, wherein, probe is arranged at spy
The bottom of head group, closure of popping one's head in is arranged at the top of probe group, and probing shell wraps up the sidepiece of probe group.
The probe is the ion implanting silicon detector towards filter paper.
The detector assembly also includes the cable plug being arranged on probe closure, and the probe group passes through the cable
Plug is connected with industrial computer.
The automatic paper conveyer has tray paper device, active paper winding device and driven paper winding device, wherein, filter paper is supported
On the tray paper device, the two ends of the filter paper are respectively on active paper winding device and driven paper winding device.
The sampling and measuring device also includes the air pump being connected with the escape pipe.By means of the air pump, core sets
Apply pipeline and the gaseous effluent (being loaded with the fluid of radioaerosol) in place is collected on one's own initiative on filter paper, pass through
α, β ray of detector assembly detection radioaerosol radiation.Preferably, the detectable signal that detector assembly sends can enter
Row amplifies shaping, so as to export the signal of certain amplitude, in order to preferably observe.
The present invention also provides a kind of sampled measurements method of above-mentioned sampling and measuring device, and the method includes：It is loaded with radiation
Property aerosol fluid by air inlet enter spherical sampling head；The fluid is by the probe fair water cone guided globe of taper
The inwall of sampling head is simultaneously moved downward；The fluid passes through manhole, wherein, the radioaerosol in fluid is deposited on filter
On paper, the α of the radioaerosol transmitting that this is deposited on filter paper, the detected device assembly of beta-particle are detected；And do not contain and put
The fluid of penetrating property aerosol enters escape pipe.In the method for the invention, the fluid Jing tapers of radioaerosol are loaded with
After probe fair water cone shunting, fluid is along the inwall flow direction lower section of spherical sampling head, and it is inclined that the spherical inwall occurs fluid
Turn and make the manhole of fluid plus flow speed and direction sampling head, so as to reduce damage of the radioactive aerosol particle in sampling process
Lose.
The present invention is sampled by automatic paper conveyer, is measured by detector assembly, it is achieved thereby that sampling
With the integration of measurement.Meanwhile, radioactive aerosol particle plus flow speed and direction manhole are caused by spherical sampling head, so as to
Loss of the radioaerosol in sampling process is reduced, the collecting efficiency of radioaerosol is improve, it is ensured that the standard of measurement
True property.Designed by the polishing of the inwall of spherical sampling head, can further reduce radioactive aerosol particle in sampling head
Attachment on inwall.Because automatic paper conveyer is arranged at sampling interior, as long as filling to automatic carriage by opening the sampler chamber
The filter paper put is changed, convenient and swift.Further, since detector assembly is arranged in sampling head, spherical shell can stop space
Impacts of the β and gamma-rays of cosmos to measuring, without the need for carrying out extra lead screen, thus it is simple and compact for structure.
Description of the drawings
Fig. 1 is the schematic diagram of the sampling and measuring device of radioaerosol of the invention；And
Fig. 2 is the flow chart of the sampled measurements method of radioaerosol of the invention.
Specific embodiment
Below in conjunction with the accompanying drawings, presently preferred embodiments of the present invention is provided, and is described in detail.
Fig. 1 shows the sampling and measuring device of radioaerosol of the invention, and it includes sealingly coupled with each other
Sampling head 1 and sampler chamber 4.
Wherein, sampling head 1 is set to spherical, and air inlet 1a is provided with its roof, and manhole 1b is provided with diapire.
The sampling head 1 is made up of the episphere housing 5 and lower semisphere housing 7 connected by steady pin 6.Episphere housing 5 and lower semisphere
O-ring seal is provided between housing 7.The inwall of sampling head 1 is attached to through polishing so as to reduce radioaerosol
Loss on the inwall of sampling head.Further, since the sampling head 1 is spherical, fluid (such as core of radioaerosol is loaded with
The air in facility staff place) when flowing along spherical inner wall, acceleration can be produced so as to accelerate flowing, further reduce radiation
Property aerosol is attached to the loss on inwall, thus, all of radioaerosol adds flow speed and direction manhole 1b, and is deposited on
It is supported on filter paper 20 herein, the radioactivity gas that the radioactive aerosol particle number on filter paper 20 truly reflects in air
Sol particles number, so that it is guaranteed that the accuracy of measurement.
The probe fair water cone 2 of taper is provided with the underface of air inlet 1a, sampling head 1, radioactivity gas is loaded with molten
After the fluid of glue is shunted by the probe fair water cone 2 of taper, the inwall four of the sampling head 1 for being directed to be evenly distributed in spherical
Week, and flow downward along spherical inwall.
Detector assembly is provided with the lower section of probe fair water cone 2, sampling head 1.The detector assembly includes probe
Group 3, probe 8, probing shell 9, probe closure 10 and cable plug 11, wherein, probe 8 is arranged at the bottom of probe group 3, visits
Head closure 10 is arranged at the top of probe group 3, and the sidepiece of the parcel probe of probing shell 9 group 3, cable plug 11 is arranged at probe
On closure 10, the probe group 3 is connected by the cable plug 11 with industrial computer, is finally completed α, β of radioaerosol
Measurement.In the present embodiment, the probe 8 is ion implanting silicon detector.
Sampler chamber 4 is arranged at the lower section of sampling head 1.One escape pipe 16 is arranged through the sampler chamber 4, the escape pipe 16 with it is circular
Through hole 11 is connected, and has slit between the escape pipe 16 and manhole 11, and a filter paper 20 extends (horizontal-extending) through slit.Remove
The filter paper 20, the automatic paper conveyer being arranged in sampler chamber 4 also has tray paper device 12, active paper winding device 13 and driven
Paper winding device 14, wherein, filter paper 20 is supported on the tray paper device 12, and the two ends of the filter paper 20 are rolled up respectively wound on active
On paper device 13 and driven paper winding device 14.Active paper winding device 13 is the device that the filter paper 20 after use is wound winding, from
Dynamic paper winding device 14 is to fix new filter-paper-tape, constantly to the device for walking paper system supply filter paper 20.Automatic paper conveyer is using step
Stepper motor drives, and can be rotated both clockwise and counterclockwise.
The probe 8 of the detector assembly in sampling head 1 is located at the surface of filter paper 20.Radioaerosol in fluid is sunk
On filter paper 20, the α of the radioaerosol transmitting, beta-particle are detected product by probe 8.
Sampling and measuring device of the invention also includes the mass flowmenter 17 that is connected with the escape pipe 16 and takes out
Air pump 18, referring to Fig. 2.Can accurately be measured with the volume of convection current sampler body using the mass flowmenter 17.Using the pumping
Pump 18 carries out pumping and is deposited on one's own initiative on filter paper 20 so that being loaded with the fluid of radioaerosol, realizes active type measure.
In order to accurately be measured radioaerosol, the flow of fluid of radioaerosol is loaded with preferably in 30-100L/
Min or so, the flow of the mass flowmenter 17 of supporting needs is 0-100L/min, and the presence of filter paper 20 can be deposited to gas flow
In certain impact, in order to reach the flow of 100L/min, the no load discharge of air pump 18 is preferably 150L/min.
In the present embodiment, sampler chamber 4 is presented box structure, and it is by the base plate that connected with snap lock and closure 15
Closed, the base plate and the middle setting of closure 15 have sealing ring.If necessary to change filter paper 20, it is only necessary to by closure 15
Dismantled, filter paper 20 changes convenient and swift.
In the present embodiment, the distance of filter paper 20 and probe 8 is preferably 4mm~6mm, and detection efficient now is maximum.Circle
The diameter of shape through hole 1b is preferably 60mm~70mm, and the width of corresponding filter paper 20 is more than the diameter of manhole 1b.According to
Optimum experimental, the cone angle of fair water cone 2 of popping one's head in is preferably 78 °~82 °, and the diameter of escape pipe 16 is preferably 26mm~30mm.Come in and go out
Mouth difference in flow is preferably ＜ 5%, to guarantee the accuracy of measurement data.
In the present embodiment, air inlet 1a, manhole 1b, escape pipe 16, probe fair water cone 2 and the equal position of detector assembly
On same axis, active paper winding device 13 and driven paper winding device 14 are located at respectively the both sides of escape pipe 16 and in symmetrical point
Cloth.
Fig. 2 shows the sampled measurements method of radioaerosol of the invention, in the presence of air pump 18, bears
The fluid for being loaded with radioaerosol enters spherical sampling head 1 by air inlet；The fluid is by the probe fair water cone of taper
The inwall of the sampling head of guided globe is simultaneously moved downward；Wherein, the radioaerosol in fluid is deposited on the filter in sampler chamber 4
On paper 20, the α of the radioaerosol transmitting that this is deposited on filter paper 20, the detected device assembly of beta-particle detect realization measurement；
And the fluid for not containing radioaerosol enters escape pipe and finally derives.Wherein, using the quality being connected with escape pipe 16
Effusion meter 17, can accurately be measured with the volume of convection current sampler body.
Above-described, only presently preferred embodiments of the present invention is not limited to the scope of the present invention, and the present invention's is upper
Stating embodiment can also make a variety of changes.What i.e. every claims and description according to the present patent application were made
Simply, equivalence changes and modification, fall within the claims of patent of the present invention.Of the invention not detailed description is
Routine techniquess content.
Claims (8)
1. a kind of sampling and measuring device of radioaerosol, it is characterised in that the sampling and measuring device include sampling head and
The sampler chamber being tightly connected with sampling head, wherein, the sampling head for spherical, the inwall of the sampling head through polishing,
Air inlet is provided with the roof of the sampling head, manhole is provided with diapire, a diameter of 60mm of the manhole~
70mm；The probe fair water cone of taper is provided with the sampling head, the vertex of a cone of the probe fair water cone is arranged at the air inlet
Underface, probe fair water cone below be provided with detector assembly；Have through going out that the sampler chamber is arranged in the sampler chamber
Trachea, the escape pipe connects and has between manhole slit, sampling interior to be provided with to walk automatically with the manhole of sampling head
Paper device, is configured with the filter paper extended through slit on the automatic paper conveyer.
2. sampling and measuring device according to claim 1, it is characterised in that the sampling head is by by the upper of fixed pin connection
Loadings On Hemispherical Shell and lower semisphere housing are constituted.
3. sampling and measuring device according to claim 2, it is characterised in that set between episphere housing and lower semisphere housing
It is equipped with O-ring seal.
4. sampling and measuring device according to claim 1, it is characterised in that the detector assembly includes probe group, visits
Head, probing shell and probe closure, wherein, probe is arranged at the bottom of probe group, and probe closure is arranged at probe group
Top, probing shell wraps up the sidepiece of probe group.
5. sampling and measuring device according to claim 4, it is characterised in that the probe is the ion implanting towards filter paper
Silicon detector.
6. sampling and measuring device according to claim 4, it is characterised in that the detector assembly also includes being arranged at spy
Cable plug on head closure, the probe group is connected by the cable plug with industrial computer.
7. sampling and measuring device according to claim 1, it is characterised in that there is the automatic paper conveyer tray paper to fill
Put, active paper winding device and driven paper winding device, wherein, filter paper is supported on the tray paper device, the two ends point of the filter paper
Not on active paper winding device and driven paper winding device.
8. sampling and measuring device according to claim 1, it is characterised in that the sampling and measuring device is also included and institute
State the air pump of escape pipe connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510030726.4A CN104596807B (en) | 2015-01-21 | 2015-01-21 | Sampling measuring device and sampling measuring method of radioactive aerosol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510030726.4A CN104596807B (en) | 2015-01-21 | 2015-01-21 | Sampling measuring device and sampling measuring method of radioactive aerosol |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104596807A CN104596807A (en) | 2015-05-06 |
| CN104596807B true CN104596807B (en) | 2017-05-17 |
Family
ID=53122730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510030726.4A Active CN104596807B (en) | 2015-01-21 | 2015-01-21 | Sampling measuring device and sampling measuring method of radioactive aerosol |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104596807B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865398B (en) * | 2015-05-25 | 2016-08-24 | 北京华瑞核安科技股份有限公司 | Radioaerosol auto monitoring and measurement instrument |
| CN104865591B (en) * | 2015-05-25 | 2017-10-17 | 北京华瑞核安科技股份有限公司 | Integrated type radiation environment auto monitoring and measurement station |
| CN105181398A (en) * | 2015-09-25 | 2015-12-23 | 南京航空航天大学 | Passive aerosol continuous sampling device |
| CN105466733B (en) * | 2015-12-16 | 2017-12-05 | 中国船舶重工集团公司第七一九研究所 | A kind of step-by-step movement high flow rate aerosol sampler |
| CN106896397B (en) * | 2015-12-18 | 2020-09-04 | 中国辐射防护研究院 | Test method and system for radioactive aerosol monitoring technical device |
| CN107402282A (en) * | 2016-05-19 | 2017-11-28 | 中国辐射防护研究院 | A kind of radioaerosol monitoring device easily moved |
| CN108761515B (en) * | 2018-06-06 | 2022-02-18 | 成都理工大学 | Aerosol on-line detector |
| CN112162309A (en) * | 2020-08-13 | 2021-01-01 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Cabinet type air-borne radioactive integrated monitoring device |
| CN112162308A (en) * | 2020-08-13 | 2021-01-01 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Radioactive gas on-line monitoring device |
| CN112857919A (en) * | 2021-02-05 | 2021-05-28 | 中广核研究院有限公司 | Radioactive aerosol sampling and measuring device |
| CN113588357B (en) * | 2021-08-04 | 2024-05-03 | 上海中科新核智能科技有限公司 | Automatic paper feeding sampling and measuring device for radioactive aerosol |
| CN115429910A (en) * | 2022-09-07 | 2022-12-06 | 上海长征医院 | Shoe disinfection system integrated with sampling mechanism |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2856982Y (en) * | 2005-12-23 | 2007-01-10 | 中国辐射防护研究院 | Continuous sampling paper feeding integrated device for radiative aerosol |
| CN102175505A (en) * | 2011-01-25 | 2011-09-07 | 西北大学 | Aerosol smooth beam-splitting device |
| CN202305509U (en) * | 2011-10-28 | 2012-07-04 | 北京赛思科系统工程有限责任公司 | Automatic paper feeding device for measuring radioactive aerosol |
| RU2480730C1 (en) * | 2011-11-23 | 2013-04-27 | Федеральное государственное учреждение "Государственный научный центр Российской Федерации - Федеральный медицинский биофизический центр имени А.И.Бурназяна" | Device for measuring dispersity and volumetric activity of aerosol and gaseous fractions of radioactive ruthenium |
| CN104006991A (en) * | 2014-06-04 | 2014-08-27 | 武汉市天虹仪表有限责任公司 | Membrane supporter for containing smoke sampling filter membrane |
-
2015
- 2015-01-21 CN CN201510030726.4A patent/CN104596807B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2856982Y (en) * | 2005-12-23 | 2007-01-10 | 中国辐射防护研究院 | Continuous sampling paper feeding integrated device for radiative aerosol |
| CN102175505A (en) * | 2011-01-25 | 2011-09-07 | 西北大学 | Aerosol smooth beam-splitting device |
| CN202305509U (en) * | 2011-10-28 | 2012-07-04 | 北京赛思科系统工程有限责任公司 | Automatic paper feeding device for measuring radioactive aerosol |
| RU2480730C1 (en) * | 2011-11-23 | 2013-04-27 | Федеральное государственное учреждение "Государственный научный центр Российской Федерации - Федеральный медицинский биофизический центр имени А.И.Бурназяна" | Device for measuring dispersity and volumetric activity of aerosol and gaseous fractions of radioactive ruthenium |
| CN104006991A (en) * | 2014-06-04 | 2014-08-27 | 武汉市天虹仪表有限责任公司 | Membrane supporter for containing smoke sampling filter membrane |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104596807A (en) | 2015-05-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104596807B (en) | Sampling measuring device and sampling measuring method of radioactive aerosol | |
| CN104570040B (en) | A kind of on-line monitoring method of radgas and radioaerosol | |
| CN106291655B (en) | Airborne radioactivity monitor | |
| CN106054237B (en) | A kind of working method of the calibration system platform of radioaerosol monitoring device | |
| CN109001790A (en) | A kind of continous way water radon measurement device and method | |
| CN206399778U (en) | Light scattering method Atmospheric particulates detection device and its sheath gas gas circuit | |
| CN104820230B (en) | A kind of Low background α, β activity analysis instrument | |
| CN206146773U (en) | Atmosphere particle detection device | |
| CN104215997A (en) | Alpha and gamma dual-channel energy spectrum continuous monitoring method and alpha and gamma dual-channel energy spectrum continuous monitoring system | |
| CN106769744A (en) | A kind of vehicle-mounted laser dust sensor | |
| CN107101918A (en) | A kind of grain graininess on-line measurement system | |
| US4676092A (en) | Filter test method and apparatus | |
| CN112162309A (en) | Cabinet type air-borne radioactive integrated monitoring device | |
| EP0147800A3 (en) | A method and apparatus for crack detection and characterization | |
| CN203616482U (en) | Measuring system for detection efficiency of airbone radioactive iodine measuring instrument | |
| US3528279A (en) | Device for sampling aerosols | |
| US9157871B2 (en) | Method and apparatus to enhance collection of particles in particulate mass measurement device | |
| CN103616712A (en) | Measuring method and system for detection efficiency of airborne radioactive iodine measuring apparatus | |
| CN104841640B (en) | Automatic sorting device for irradiated particles | |
| CN109883910A (en) | A kind of electrostatic induction apparatus for measuring dust concentration with pre electrified | |
| CN109444946A (en) | A kind of intelligence radon thorium analyzer | |
| CN205941332U (en) | Water chlorophyll concentration normal position detection device | |
| CN205506626U (en) | Beta-ray method three-channel atmospheric particulate monitoring equipment | |
| CN207036619U (en) | A kind of grain graininess on-line measurement system | |
| CN109596181A (en) | On-line continuous Weighing type ore pulp multiparameter measurement and control device and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |