CN206450478U - Radioactivity inert gas sampler - Google Patents
Radioactivity inert gas sampler Download PDFInfo
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- CN206450478U CN206450478U CN201720163869.7U CN201720163869U CN206450478U CN 206450478 U CN206450478 U CN 206450478U CN 201720163869 U CN201720163869 U CN 201720163869U CN 206450478 U CN206450478 U CN 206450478U
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Abstract
The utility model is radioactivity inert gas sampler, solves existing device and carries inconvenient, it is impossible to prevent the problem of data after residual sample gas is mixed with the sample gas newly poured in container after sample gas gas source component changes are inaccurate.On working medium pipeline the 1st valve is sequentially connected from entrance（1）, aerosol collection（25）, the 1-4th threeway, the 1st check valve 24, booster pump（11）, mass flow controller（12）, the 2nd valve（5）, the 2nd check valve（22）, the 5th threeway, container（13）Import, container（13）Outlet be connected with the 6th threeway, the 6th threeway left end is through the 4th valve（3）With purging inlet tube（18）Connection, the 6th threeway right-hand member is through the 5th valve（4）, the 7th threeway, the 6th valve（6）With vavuum pump（16）There is pressure sensor on connection, connecting line（17）, the 7th three stimulates the menstrual flow the 3rd check valve（23）With working medium tube outlet（19）Connection.
Description
Technical field：
The utility model is relevant with the gas sampling device of nuclear radiation, radiation environment.
Background technology：
The radioactivity inert gas sampling in field is radiated in core in present China, using offline, online two ways.And it is current
More, all it is the mode of offline sampling detection.
Offline mode measurement sampling, it is common that for radioactivity inert gas in air, using charcoal absorption, sampling
Pipe, sampling jar obtain corresponding sample, and sampling jar then is sent into laboratory carries out alpha-beta-gamma ray spectrometer analysis.Due to many environment
Under, radioactivity inert gas is generally low-level radionuclide, measuring method sampling jar small volume (1L or 3L) at this stage,
And pressure is not high (being less than 0.5Mpa) so that the detection limit of " offline " formula measurement is higher（By taking Xe133 as an example, detection limit is about
102Bq/m3).Radioactivity inert gas " offline " formula detectivity directly influence nuclear radiation gas margin of safety problem and
Accuracy problems.
Online mode measure sampler, then make use of circulating pump, booster pump, collecting tank, on-line monitoring instrument, take online
Sampling instrument carries out continuous analysis measurement, substantially increases efficiency and the margin of safety.
Existing radioactivity inert gas measures sampler weak point：
First, as stated earlier, for offline mode, for the source of the gas of radgas to be detected, measurement and sampling, all
It is unstable.Since because being offline, it is necessary to disconnect gas piping, the sample gas of sampling is measured, volume is just very limited；Again
Person, it is offline after, the source of the gas of sample gas is certain it cannot be guaranteed that stable lasting supply, result in measurement result fluctuation and when
Between relation, can not also be monitored to.Add danger, reduce the degree of accuracy.
Secondly, existing online mode, it, in acquiescence, is based on the constant premise of sample gas gas source component in other words to be
Lower design, sample gas gas source component is not accounted for, in continual fluctuation and change, even if such fluctuation and change
It is small, also results in the sample gas of sampling detection, detects that data can not ensure accurately in fact.Because composition transfer,
Then from microcosmic, just have the biased sample gas largely remained and occur, due to be fixedly connected sampler 21, the volume of container 13
Greatly, under carrying just.
Utility model content
The purpose of this utility model is to provide a kind of easy to carry, continuously to the sampling of sample working medium gas and can prevent sample
Data are inaccurate after residual sample working medium gas is mixed with the sample working medium gas newly poured in container after product working medium gas source component changes
Radioactivity inert gas sampler.
What the utility model was realized in；
On working medium pipeline from entrance be sequentially connected the 1st valve 1, aerosol collection 25, the 1-4th threeway, the 1st check valve 24,
Booster pump 11, flow controller 12, the 2nd valve 5, temperature sensor 14, the 1st pressure sensor 15, the 2nd check valve the 22, the 5th three
The logical, import of container 13, the 5th three the 3rd valve 2 that stimulates the menstrual flow is connected with purging outlet, and the outlet of container 13 is connected with the 6th threeway, and the 6th
Threeway left end is connected through the 4th valve 3 with purging inlet tube 18, and the 6th threeway right-hand member is through the 5th valve 4, the 7th threeway, the 6th valve 6 and vavuum pump
16 connections, there is the 2nd pressure sensor 17 on connecting line, and the 7th three the 3rd check valve that stimulates the menstrual flow is connected with working medium tube outlet 19, the
1-4 threeways are connected through the 7-10th valve with the import and export of the 1st, 2 samplers 21 respectively.
The import and export of the sampler 21 of container 13, the 1st, 2 are connected by snap joint 20 with working medium pipeline.
The utility model has the following advantages：
The utility model is can to collect tritium, and gamma-rays can be detected again, moreover it is possible to detect the integrated portable device of α-radionuclide；
The collection and sampling of three kinds of radioactivity inert gases are met simultaneously；
The influence for even preventing the interior sample gas remained of container to the measurement data of fresh sample gas can be reduced, makes data more accurate
Really；
Because the import and export of the sampler 21 of container 13, the 1st, 2 are connected by snap joint 20 with working medium pipeline.Can contra
Just, the flexible place that sampler 21, container 13 are positioned over to any sampling to be monitored and detection, improves portable degree.
Brief description of the drawings：
Fig. 1 is structure chart of the present utility model.
Embodiment：
On working medium pipeline from entrance be sequentially connected the 1st valve 1, aerosol collection 25, the 1-4th threeway, the 1st check valve 24,
Booster pump 11, mass flow controller 12, the 2nd valve 5, the 2nd check valve 22, the 5th threeway, the import of container 13, the 5th three stimulates the menstrual flow
3 valves 2 are connected with purging outlet, and the outlet of container 13 is connected with the 6th threeway, and the 6th threeway left end is through the 4th valve 3 and purging entrance
Pipe 18 is connected, and the 6th threeway right-hand member is connected through the 5th valve 4, the 7th threeway, the 6th valve 6 with vavuum pump 16, there is pressure biography on connecting line
The 3rd check valve that stimulates the menstrual flow of sensor the 17, the 7th three is connected with working medium tube outlet 19, the 1-4th threeway respectively through the 7-10th valve and the 1st,
The import and export connection of 2 samplers 21.The import and export of the sampler 21 of container 13, the 1st, 2 are connected by snap joint 20 and working medium pipeline
Connect.
1st, 2 samplers 21 collect the tritium composition in Working medium gas simultaneously, and the effect of aerosol collection 25 is to collect work
Alpha ray in matter gas, it is model HI-Q.
Operation principle is as follows：
1st, valve 2,3 is opened, and shutoff valve 4,5 sweeps container 13, flushing is finished with external nitrogen/argon air-blowing, and this 2 valve 2,3 is closed
Close；
2nd, booster pump 11, booster pump import export valve 1,5 are opened simultaneously, to container 13 in suppress working medium gas；Container 13 goes out
The valve 4 at mouth end is now still closed；
3rd, pressure sensor 17 is detected after working medium gas in container 13 reaches certain setting pressure, booster pump 11, is increased
Press pump terminal valve 1,5 is simultaneously closed off；Or, when booster pump starts the transferring working medium gas into pressure vessel 13,5 minutes are arrived
（The settable time）, the booster pump 11, the valve 1,5 of booster pump import and export are also simultaneously closed off；Now pressure vessel 13 port of export
Valve 2 is still closed；
During start, mass flowmenter 12 shows Working medium gas instantaneous delivery, integrated flux in real time；Pressure vessel 13
The valve 4 of the port of export is opened according to the demand of operating mode；Pressure sensor 17 and mass flowmenter 12, booster pump 11, all respectively have respectively
Single air switch control, booster pump 11 is protected with over-current and -load.
Claims (2)
1. radioactivity inert gas sampler, it is characterised in that be sequentially connected the 1st valve from entrance on working medium pipeline（1）, gas it is molten
Glue collector（25）, the 1-4th threeway, the 1st check valve（24）, booster pump（11）, mass flow controller（12）, the 2nd valve（5）、
2nd check valve（22）, the 5th threeway, container（13）Import, the 5th three stimulates the menstrual flow the 3rd valve（2）It is connected with purging outlet, container
（13）Outlet be connected with the 6th threeway, the 6th threeway left end is through the 4th valve（3）With purging inlet tube（18）Connection, the 6th threeway right-hand member
Through the 5th valve（4）, the 7th threeway, the 6th valve（6）With vavuum pump（16）There is pressure sensor on connection, connecting line（17）, the 7th three
Stimulate the menstrual flow the 3rd check valve（23）With working medium tube outlet（19）Connection, the 1-4th threeway is respectively through the 7-10th valve（7、8、9、10）With
1st, 2 samplers（21）Import and export connection.
2. radioactivity inert gas sampler according to claim 1, it is characterised in that container（13）, the 1st, 2 sampling
Device（21）Import and export pass through snap joint（20）It is connected with working medium pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720163869.7U CN206450478U (en) | 2017-02-23 | 2017-02-23 | Radioactivity inert gas sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720163869.7U CN206450478U (en) | 2017-02-23 | 2017-02-23 | Radioactivity inert gas sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206450478U true CN206450478U (en) | 2017-08-29 |
Family
ID=59665685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720163869.7U Expired - Fee Related CN206450478U (en) | 2017-02-23 | 2017-02-23 | Radioactivity inert gas sampler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206450478U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114034521A (en) * | 2021-10-26 | 2022-02-11 | 福建宁德核电有限公司 | Nuclear power station radioactive gas sampling device |
| CN114397354A (en) * | 2021-12-31 | 2022-04-26 | 四川红华实业有限公司 | Device and method for separating standard substance of gas uranium isotope abundance |
-
2017
- 2017-02-23 CN CN201720163869.7U patent/CN206450478U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114034521A (en) * | 2021-10-26 | 2022-02-11 | 福建宁德核电有限公司 | Nuclear power station radioactive gas sampling device |
| CN114397354A (en) * | 2021-12-31 | 2022-04-26 | 四川红华实业有限公司 | Device and method for separating standard substance of gas uranium isotope abundance |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170829 Termination date: 20200223 |