CN201126720Y - Gamma spectral measurement collimating device for natrium cold fast reactor - Google Patents
Gamma spectral measurement collimating device for natrium cold fast reactor Download PDFInfo
- Publication number
- CN201126720Y CN201126720Y CNU2007203103382U CN200720310338U CN201126720Y CN 201126720 Y CN201126720 Y CN 201126720Y CN U2007203103382 U CNU2007203103382 U CN U2007203103382U CN 200720310338 U CN200720310338 U CN 200720310338U CN 201126720 Y CN201126720 Y CN 201126720Y
- Authority
- CN
- China
- Prior art keywords
- fast reactor
- sodium
- collimator
- hole
- spectral measurement
- 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.)
- Expired - Lifetime
Links
- 238000005259 measurement Methods 0.000 title claims abstract description 20
- 230000003595 spectral effect Effects 0.000 title claims description 12
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 title description 2
- 239000000523 sample Substances 0.000 claims abstract description 14
- 239000012535 impurity Substances 0.000 abstract description 15
- 230000002285 radioactive effect Effects 0.000 abstract description 15
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract description 10
- 229910052708 sodium Inorganic materials 0.000 abstract description 10
- 239000011734 sodium Substances 0.000 abstract description 10
- 238000001228 spectrum Methods 0.000 abstract description 6
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 abstract description 2
- 230000005855 radiation Effects 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 11
- 239000003758 nuclear fuel Substances 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 3
- 230000005251 gamma ray Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Measurement Of Radiation (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The utility model relates to a collimator, more specifically relates to a gamma spectrum measurement collimator for sodium cooled fast reactor. The collimator is composed by a cylinder body and a cover, front end surface of the body is provided with an opening groove matching with outer diameter of a measurement tube, the opening groove is communicated with a through hole provided on central axial line of the body, end of the through hole is conical hollow cavity matching with a probe of a detector. When measuring, the collimator is disposed between the measurement tube and the probe of the detector; when radioactive impurities in a loop sodium flow through the measurement tube, the released gamma radiation will be guided to the probe of the detector via the collimator so as to measure content of the radioactive impurities in a loop circuit, thus monitoring online whether fuel elements are damaged. The utility model has simple structure and convenient usage.
Description
Technical field
The utility model relates to a kind of collimating apparatus, is specifically related to a kind of sodium-cooled fast reactor γ spectral measurement collimating apparatus.
Background technology
Sodium metal is used as the catalyst carrier in fast reactor one loop, in case the fast reactor fuel element failure, the radioimpurity radioactive impurity in the heap will enter in the catalyst carrier sodium.By the γ spectrum that radioimpurity radioactive impurity sent in the catalyst carrier sodium is measured, can analyze the content of these radioimpurity radioactive impurities, and then whether damaged can monitor the fast reactor fuel element.
Normally measure γ spectrum with detection instrument, yet the γ spectrum that sends from fast reactor one loop measuring tube is dispersed, the γ spectrum of dispersing that need will send from measuring tube accurately causes the probe of detection instrument, for this reason, must design a kind of collimating apparatus of energy head it off.Do not see relevant report in the prior art.
The utility model content
The purpose of this utility model is to provide a kind of sodium-cooled fast reactor to measure collimating apparatus with γ, and it can cause the γ spectrum that radioimpurity radioactive impurity sent in sodium-cooled fast reactor one loop probe place of γ spectrographic detection instrument exactly.
The purpose of this utility model is achieved by the following technical solution, a kind of sodium-cooled fast reactor γ spectral measurement collimating apparatus, it comprises cylindrical body, on the cylindrical body front end face, be provided with a open slot outside measuring tube through matching, on the cylindrical body axis, be provided with the rounded through hole of xsect, this through hole front end communicates with open slot, the conical cavity that the end of through hole matches for the probe with detector.
Collimating apparatus provided by the utility model need with the supporting use of measuring tube.During gamma-ray measurement, the γ spectral measurement collimating apparatus that needs the utility model is provided is placed between measuring tube and the detection instrument, and measuring tube is stuck in the open slot, the coniform cavity with the alignment probe body tip of detection instrument makes gamma-rays be round point shape at the probe place.Whether damaged when radioimpurity radioactive impurity was flowed through measuring tube in the loop sodium, the gamma-rays of its release was directed to the probe place of detection instrument by this collimating apparatus, can measure the content of radioimpurity radioactive impurity in the sodium, to reach on-line monitoring fast reactor fuel element purpose.After measurement finishes, lid is covered, with the security of guaranteeing to use.
The two ends of said measuring tube are connected in the sodium loop of sodium-cooled fast reactor, and damaged when the fuel element generation, when radioimpurity radioactive impurity entered sodium loop, because of being filled with the material of absorption radioimpurity radioactive impurity in the measuring tube, this radioimpurity radioactive impurity will be enriched in the measuring tube.The gamma-rays that this radioimpurity radioactive impurity sends penetrates the measuring tube tube wall, and gamma-rays disperses, need be by causing detection instrument probe place exactly after the γ spectral measurement collimating apparatus calibration provided by the utility model.By detection instrument to the gamma-ray radioimpurity radioactive impurity content could analyze in the loop sodium of measuring.
The utility model is simple in structure, and is easy to use.
Description of drawings
Fig. 1 is a kind of sodium-cooled fast reactor provided by the utility model γ spectral measurement collimator structure synoptic diagram.
Among the figure, 1 body, 3 open slots, 4 through holes, 5 lids.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done more specifically to describe.
As shown in Figure 1, a kind of sodium-cooled fast reactor provided by the utility model is made by stainless steel with γ spectral measurement collimating apparatus.This collimating apparatus is made up of cylindrical body 1 and lid 5, and wherein, cylindrical body 1 comprises two sections right cylinders of different-diameter, and the leading portion right cylinder is thinner than back segment right cylinder; Be provided with an open slot 3 at the cylindrical front end face of body 1 leading portion, the width of open slot 3 and the external diameter of measuring tube are complementary, and the measuring tube in fast reactor one loop just is stuck in the open slot 3.Have through hole 4 in the cylindrical body 1, through hole 4 is positioned at body position, 1 axis and passes whole body 1, and the xsect of through hole 4 is circular, and through hole 4 point diameters are Φ 5-40mm, and through hole 4 forms abducent coniform cavity in body 1 end; The bottom of open slot 3 communicates with through hole 4.Cover 5 roundedly, the bottom of lid 5 is cone, coincide with the coniform cavity of through hole 4 ends; For easy to use, on lid 5, be provided with handle.
Wherein, through hole 4 point diameters can be Φ 12mm, Φ 24mm or Φ 36mm.
The utility model need with the supporting use of measuring tube.During measurement, collimating apparatus is placed between the probe of measuring tube and detection instrument, and measuring tube is stuck in the open slot 3 of body 1 front end, open cover 5 after, with the conical through hole 4 of alignment probe body 1 end of detection instrument.When radioimpurity radioactive impurity is flowed through measuring tube in the loop sodium, the gamma-rays of its release can be directed to the probe place of detection instrument through collimating apparatus of the present utility model, can record the content of radioimpurity radioactive impurity in the loop, reach the whether damaged purpose of on-line monitoring fast reactor fuel element.After measurement finishes, with lid 5 the collimating apparatus end covered, to guarantee safety.
Claims (4)
1. a sodium-cooled fast reactor is with γ spectral measurement collimating apparatus, it is characterized in that: it comprises cylindrical body (1), on cylindrical body (1) front end face, be provided with an open slot through matching (3) outside measuring tube, on cylindrical body (1) axis, be provided with the rounded through hole of xsect (4), this through hole (4) front end communicates with open slot (3), the conical cavity that the end of through hole (4) matches for the probe with detector.
2. sodium-cooled fast reactor γ spectral measurement collimating apparatus according to claim 1 is characterized in that: said through hole (4) point diameter is 5～40mm.
3. sodium-cooled fast reactor γ spectral measurement collimating apparatus according to claim 1 is characterized in that: said cylindrical body (1) is made up of two sections right cylinders of different-diameter, and the leading portion right cylinder is thinner than back segment right cylinder.
4. sodium-cooled fast reactor γ spectral measurement collimating apparatus according to claim 1 is characterized in that: also be provided with lid (5) at cylindrical body (1) end, the terminal coniform cavity of the shape of lid (5) bottom and body (1) matches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203103382U CN201126720Y (en) | 2007-12-11 | 2007-12-11 | Gamma spectral measurement collimating device for natrium cold fast reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203103382U CN201126720Y (en) | 2007-12-11 | 2007-12-11 | Gamma spectral measurement collimating device for natrium cold fast reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201126720Y true CN201126720Y (en) | 2008-10-01 |
Family
ID=40000187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007203103382U Expired - Lifetime CN201126720Y (en) | 2007-12-11 | 2007-12-11 | Gamma spectral measurement collimating device for natrium cold fast reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201126720Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169735A (en) * | 2010-12-23 | 2011-08-31 | 中国原子能科学研究院 | Nuclear power station fuel rod breakage on-line detection system |
| CN105938731A (en) * | 2015-03-05 | 2016-09-14 | 住友重机械工业株式会社 | Neutron capture therapy device |
| CN106504812A (en) * | 2016-12-08 | 2017-03-15 | 清华大学 | Collimator, radiation-emitting device and inspection equipment |
-
2007
- 2007-12-11 CN CNU2007203103382U patent/CN201126720Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169735A (en) * | 2010-12-23 | 2011-08-31 | 中国原子能科学研究院 | Nuclear power station fuel rod breakage on-line detection system |
| CN105938731A (en) * | 2015-03-05 | 2016-09-14 | 住友重机械工业株式会社 | Neutron capture therapy device |
| CN106504812A (en) * | 2016-12-08 | 2017-03-15 | 清华大学 | Collimator, radiation-emitting device and inspection equipment |
| US20180160997A1 (en) * | 2016-12-08 | 2018-06-14 | Tsinghua University | Collimator, radiation emitting assembly and inspection apparatus |
| CN106504812B (en) * | 2016-12-08 | 2018-10-09 | 清华大学 | Collimator, radiation-emitting device and inspection equipment |
| US10939892B2 (en) * | 2016-12-08 | 2021-03-09 | Nuctech Company Limited | Collimator, radiation emitting assembly and inspection apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081001 |