CN203658589U - Airborne radioiodine activity real-time detection device - Google Patents
Airborne radioiodine activity real-time detection device Download PDFInfo
- Publication number
- CN203658589U CN203658589U CN201320748701.4U CN201320748701U CN203658589U CN 203658589 U CN203658589 U CN 203658589U CN 201320748701 U CN201320748701 U CN 201320748701U CN 203658589 U CN203658589 U CN 203658589U
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- China
- Prior art keywords
- radioiodine
- detection device
- lead shield
- time detection
- probe
- 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.)
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- XMBWDFGMSWQBCA-RNFDNDRNSA-M iodine-131(1-) Chemical compound [131I-] XMBWDFGMSWQBCA-RNFDNDRNSA-M 0.000 title claims abstract description 42
- 230000000694 effects Effects 0.000 title claims abstract description 21
- 238000011897 real-time detection Methods 0.000 title claims abstract description 18
- 239000000523 sample Substances 0.000 claims abstract description 22
- 238000005070 sampling Methods 0.000 claims abstract description 21
- 239000010935 stainless steel Substances 0.000 claims abstract description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 4
- 239000003610 charcoal Substances 0.000 claims description 11
- 239000013078 crystal Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 9
- 238000013461 design Methods 0.000 abstract description 3
- INQOMBQAUSQDDS-UHFFFAOYSA-N iodomethane Chemical compound IC INQOMBQAUSQDDS-UHFFFAOYSA-N 0.000 abstract description 3
- 230000005855 radiation Effects 0.000 abstract description 3
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052740 iodine Inorganic materials 0.000 abstract description 2
- 239000011630 iodine Substances 0.000 abstract description 2
- 238000001179 sorption measurement Methods 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 6
- 229910052799 carbon Inorganic materials 0.000 abstract 4
- RQMIWLMVTCKXAQ-UHFFFAOYSA-N [AlH3].[C] Chemical compound [AlH3].[C] RQMIWLMVTCKXAQ-UHFFFAOYSA-N 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 238000012544 monitoring process Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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- Measurement Of Radiation (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to the technical field of nuclear radiation detection and provides an airborne radioiodine activity real-time detection device which comprises a radioiodine sampling box, a lead shielding body, air going pipelines, and a probe. The radioiodine sampling box and the probe are arranged in the lead shielding body. Since a carbon box needs to be replaced frequently, a nested design mode is employed by the radioiodine sampling box, an outer layer is a stainless steel shell, an inner layer is a cylindrical aluminum carbon box, the inner layer carbon box can be quickly changed, and impregnated activated carbon with high adsorption efficiency of elemental iodine and methyl iodide is filled in the carbon box. The air going pipelines are an inlet pipeline and an outlet pipeline respectively. The inlet pipeline and the outlet pipeline pass through the lead shielding body respectively and are communicated with the outside and the inner layer carbon box of the radioiodine sampling box. The airborne radioiodine activity real-time detection device has the advantages of small size, light weight, high detection efficiency, and low requirement to the back-end electronics.
Description
Technical field
The utility model relates to nuclear radiation detection technical field, is specifically related to a kind of Airborne Radioiodine volume activity real-time detection device, for the continuous monitoring of nuclear power station or other nuclear facilities gaseous emission radioiodine volume activities.
Background technology
Airborne Radioiodine volume activity real-time detection device is the visual plant of airborne radioactivity monitoring in nuclear safety and radiation protection, and existing radioactive iodine sampling device volume is large, quality is large, cost is high, detection efficiency is low and it is inhomogeneous to survey, high to rear end electronics processing requirements.Therefore necessaryly design that a kind of volume is little, quality is light, cost is low, detection efficiency is high, the radioiodine monitoring device low to rear end electronics requirement.
Summary of the invention
The purpose of this utility model is exactly in order to overcome above-mentioned weak point of the prior art, and a kind of Airborne Radioiodine volume activity real-time detection device is provided, and this device volume is little, quality is light, detection efficiency is high, require low to rear end electronics.
The purpose of this utility model is achieved by the following technical measures: Airborne Radioiodine volume activity real-time detection device, comprise radioiodine sampling box, lead shield body, walk feed channel, probe, described radioiodine sampling box, probe are located in lead shield body, because charcoal box needs often to change, radioiodine sampling box has adopted Nested design mode, skin is stainless steel casing, nexine is tubular aluminum charcoal box, can convenient replacing nexine charcoal box, in charcoal box, load Immesion active carbon iodine and methyl iodide all to efficient adsorption efficiency.Described walk feed channel be divided into draft tube and escape pipe, draft tube and escape pipe run through respectively lead shield body and are communicated with nexine charcoal box extraneous and radioiodine sampling box.
Described probe inserts in radioiodine sampling box, adopts well type metering system, makes Airborne Radioiodine volume activity real-time detection device have higher detection efficiency.
In technique scheme, described probe adopts NaI (Tl) crystal, it is of a size of 1 inch × 1 inch of Φ, is conducive to reduce equipment volume and quality, is connected with NaI (Tl) crystal, photomultiplier, prime amplifier and main amplifier in probe in turn.Prime amplifier and main amplifier are incorporated in probe, can reduce rear end electronics processing requirements.
In technique scheme, described lead shield body is divided into front end end cover, middle lead shield main body, rear end cap, on front and rear cover, be provided with the clothes-hook that is beneficial to installation, front and rear cover is connected with embedded and middle lead shield main body, the screening ability of lead shield can be strengthened, the mechanically stable of junction can be increased again.Described lead shield body uses alloy lead to process, thickness >=50mm.
In technique scheme, on described front end end cover, offer inspection source putting hole, be convenient to unit check and debugging.
In technique scheme, the external steel lining that is arranged with of described lead shield, had both increased the physical strength of lead shield body, made again lead shield physical efficiency and the welding of other steel; For convenient in carrying, lead shield body top is provided with suspension ring, and for the ease of sniffer being fixed on to stand base plate, lead shield body bottom is provided with base.
In technique scheme, described probe is arranged with vibration-absorbing rubber sleeve outward.
In technique scheme, the different parts junction of flowing through in gas sampled has all been used sealing rubber ring, to ensure the impermeability of whole Airborne Radioiodine volume activity real-time detection device.
The utility model volume is little, quality is light, detection efficiency is high, require low to rear end electronics.The minimum detectable activity that can realize at the environmental exact details of 10 μ Gy/h 1Bq/m3, measurement range is 1Bq/m3～1 × 10
6bq/m3.Meet nuclear power station Airborne Radioiodine monitoring needs.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model Airborne Radioiodine volume activity real-time detection device.
Wherein: 1. front end end cover, 2. in the middle of lead shield main body, 3. rear end cap, 4. probe, 5. radioiodine sampling box shell, 6. charcoal box, 7. escape pipe, 8. draft tube, 9. inspection source putting hole, 10. suspension ring, 11. bases.
Embodiment
Below in conjunction with accompanying drawing, the technical scheme in the utility model is clearly and completely described.
As shown in Figure 1, the present embodiment provides a kind of Airborne Radioiodine volume activity real-time detection device, comprise radioiodine sampling box, lead shield body, walk feed channel, pop one's head in 4, sniffer output signal transfers on the spot and processes with display unit and process, the flow arriving in conjunction with flow measurement again, can obtain the volume activity of radioiodine in gas to be measured.Described radioiodine sampling box, probe are located in lead shield body, described radioiodine sampling box skin is 316L stainless steel casing 5, the further shield effectiveness of intensifier to environmental exact details, nexine is tubular aluminum charcoal box 6, can make to pop one's head in 4 stretch into charcoal box 30mm more than, and can make the detection efficiency of sniffer maintain higher level.Described walk feed channel be divided into escape pipe 7 and draft tube 8, escape pipe 7 and draft tube 8 run through respectively lead shield body and are communicated with nexine charcoal box 6 extraneous and radioiodine sampling box, junction is used the mode of threaded engagement to connect, and uses " O " type rubber seal, and pipe diameter is 0.5 inch.
Described probe 4 inserts in radioiodine sampling box.Described probe adopts source, the embedded steady peak of NaI (Tl) crystal, and it is of a size of 1 inch × 1 inch of Φ, and being conducive to diameter is the photomultiplier coupling of 1 inch, and then reduces volume, quality and the cost of equipment.In probe 4, be connected with NaI (Tl) crystal, photomultiplier, prime amplifier and main amplifier in turn.In order to increase the anti-seismic performance of equipment, around probe 4, around vibration-absorbing rubber sleeve, for 4 inner parts that prevent from popping one's head in are subject to the impact of outside moisture, the signal cable equipped at outlet port of probe 4 has adopted stuffing-box to seal.
Described lead shield body is divided into front end end cover 1, middle lead shield main body 2, rear end cap 3, is provided with the clothes-hook that is beneficial to installation on front and rear cover, and front and rear cover is connected with embedded and middle lead shield main body 2.
On described front end end cover 1, offer inspection source putting hole 9.
The external steel lining that is arranged with of described lead shield, lead shield body top is provided with suspension ring 10, and lead shield body bottom is provided with base 11.
The content not being described in detail in this instructions, belongs to the known prior art of those skilled in the art.
Claims (6)
1. Airborne Radioiodine volume activity real-time detection device, comprise radioiodine sampling box, lead shield body, walk feed channel, probe, it is characterized in that: described radioiodine sampling box, probe is located in lead shield body, described radioiodine sampling box skin is stainless steel casing, nexine is tubular aluminum charcoal box, described walk feed channel be divided into draft tube and escape pipe, draft tube and escape pipe run through respectively lead shield body and are communicated with nexine charcoal box extraneous and radioiodine sampling box, described radioiodine sampling box is around probe, in probe, be connected with NaI (Tl) crystal in turn, photomultiplier, prime amplifier and main amplifier.
2. Airborne Radioiodine volume activity real-time detection device according to claim 1, is characterized in that: described probe adopts source, the embedded steady peak of NaI (Tl) crystal, and it is of a size of 1 inch × 1 inch of Φ.
3. Airborne Radioiodine volume activity real-time detection device according to claim 1, it is characterized in that: described lead shield body is divided into front end end cover, middle lead shield main body, rear end cap, on front and rear cover, be provided with the clothes-hook that is beneficial to installation, front and rear cover is connected with embedded and middle lead shield main body.
4. Airborne Radioiodine volume activity real-time detection device according to claim 3, is characterized in that: on described front end end cover, offer inspection source putting hole.
5. Airborne Radioiodine volume activity real-time detection device according to claim 1, is characterized in that: the external steel lining that is arranged with of described lead shield, and lead shield body top is provided with suspension ring, and lead shield body bottom is provided with base.
6. Airborne Radioiodine volume activity real-time detection device according to claim 1, is characterized in that: described probe is arranged with vibration-absorbing rubber sleeve outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320748701.4U CN203658589U (en) | 2013-11-25 | 2013-11-25 | Airborne radioiodine activity real-time detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320748701.4U CN203658589U (en) | 2013-11-25 | 2013-11-25 | Airborne radioiodine activity real-time detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203658589U true CN203658589U (en) | 2014-06-18 |
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ID=50924964
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320748701.4U Expired - Fee Related CN203658589U (en) | 2013-11-25 | 2013-11-25 | Airborne radioiodine activity real-time detection device |
Country Status (1)
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|---|---|
| CN (1) | CN203658589U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676257A (en) * | 2016-02-02 | 2016-06-15 | 中国人民解放军第二军医大学 | Small-size movable-type solid and liquid material radioactive activity detection device and method |
| CN107300714A (en) * | 2016-04-14 | 2017-10-27 | 中国辐射防护研究院 | A kind of detection efficient calibration method of radioiodine activated carbon sampling filter box |
| CN109752751A (en) * | 2019-01-23 | 2019-05-14 | 成都理工大学 | In air131I dynamic equilibrium monitoring device and monitoring method |
| CN112731510A (en) * | 2020-12-22 | 2021-04-30 | 西安中核核仪器有限公司 | Mobile radioactive iodine monitoring method |
-
2013
- 2013-11-25 CN CN201320748701.4U patent/CN203658589U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676257A (en) * | 2016-02-02 | 2016-06-15 | 中国人民解放军第二军医大学 | Small-size movable-type solid and liquid material radioactive activity detection device and method |
| CN105676257B (en) * | 2016-02-02 | 2018-12-04 | 中国人民解放军第二军医大学 | Radioactive activity detection device and its detection method in the mobile solid of miniaturization, liquid substance |
| CN107300714A (en) * | 2016-04-14 | 2017-10-27 | 中国辐射防护研究院 | A kind of detection efficient calibration method of radioiodine activated carbon sampling filter box |
| CN107300714B (en) * | 2016-04-14 | 2021-08-17 | 中国辐射防护研究院 | Detection efficiency calibration method for radioactive iodine activated carbon sampling filter box |
| CN109752751A (en) * | 2019-01-23 | 2019-05-14 | 成都理工大学 | In air131I dynamic equilibrium monitoring device and monitoring method |
| CN112731510A (en) * | 2020-12-22 | 2021-04-30 | 西安中核核仪器有限公司 | Mobile radioactive iodine monitoring method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 |
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| CF01 | Termination of patent right due to non-payment of annual fee |