CN208888376U - A kind of digitlization iodine monitoring detection device - Google Patents
A kind of digitlization iodine monitoring detection device Download PDFInfo
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- CN208888376U CN208888376U CN201821678353.7U CN201821678353U CN208888376U CN 208888376 U CN208888376 U CN 208888376U CN 201821678353 U CN201821678353 U CN 201821678353U CN 208888376 U CN208888376 U CN 208888376U
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- iodine
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- digitlization
- adsorption box
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Abstract
The utility model provides a kind of digitlization iodine monitoring detection device, including shell, shell upper end are internally provided with detector, and the positive lower end of detector is provided with iodine adsorption box and iodine adsorption box is separately connected air inlet pipe and an air outlet pipe, is provided in the detector241The source Am.The utility model provides digitlization iodine monitoring detection device, and the detection of iodine monitoring device is gamma-rays of the energy range for the radioiodine of 100keV~3MeV (364.5 ± 50keV of typical energy), 3.7 × 10-1Bq/m of measurement range3~3.7 × 105Bq/m3(normal range).Iodine detection device is sampled the radioiodine in nuclear power plant's chimney discharge stream using fixed active carbon adsorption box, is detected using NaI (Tl) detector, can effectively monitor the content of iodine in exhaust gas.
Description
Technical field
The utility model relates to a kind of PWR Nuclear Power Plant waste gas monitoring technical fields, and in particular to a kind of digitlization
Iodine monitors detection device.
Background technique
The exhaust gas that PWR Nuclear Power Plant generates finally is discharged into environment.In order to check that the discharge stream of nuclear power station is
Whether no relevant regulations that meet national standards, the concentration of discharge stream are lower than operation limit value, for public's agent around estimation nuclear power station
Amount provides basic data, it is ensured that nuclear power plant's staff's personal safety, it is necessary to radiate to iodine in nuclear power plant's chimney Airborne Effluent
Property substance activity concentration is continuously measured.
PWR Nuclear Power Plant is by there are two types of the gases of smoke stack emission: first is that reactor building and auxiliary kitchen is logical
General mood body.Leakage of the radioactive source of this kind of gas from equipment or the air near pressure vessel are activated.Second is that Waste
Gas.Technology waste gas from primary Ioops generally has the radioactive substance of higher concentration；It may also in steam from secondary circuit
Contain radgas.
In existing monitoring device, general iodine radioactive substance unable to monitor.
Utility model content
In view of this, there is provided a kind of digitlization iodine to monitor detection device for the main purpose of the utility model.
The technical solution adopted in the utility model are as follows:
A kind of digitlization iodine monitoring detection device, including shell, shell upper end is internally provided with detector, in detector
Positive lower end is provided with iodine adsorption box and iodine adsorption box is separately connected air inlet pipe and an air outlet pipe, is provided in the detector241The source Am.
Further, phototransistor is provided with above the detector.
Further, the detector is NaI (Tl) scintillator detector, has been embedded in241The source Am.
Further, the impregnated cocoanut active charcoal of TEDA is filled in the iodine adsorption box.
Further, it is provided with circuit board one and ARM processing board in the shell, is provided on the circuit board one preposition
Amplifier, digital channel unit, the preamplifier connection phototransistor and digital channel unit, the digital channel list
Member is connect with ARM processing board.
The utility model provides digitlization iodine monitoring detection device, and the detection of iodine monitoring device is that energy range is
The gamma-rays of the radioiodine of 100keV~3MeV (364.5 ± 50keV of typical energy), 3.7 × 10-1Bq/m of measurement range3~
3.7×105Bq/m3(normal range).Iodine detection device is using fixed active carbon adsorption box in nuclear power plant's chimney discharge stream
Radioiodine be sampled, detected using NaI (Tl) detector, can effectively monitor the content of iodine in exhaust gas.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the three-dimensional structure diagram of the utility model；
Fig. 3 is the circuit diagram that digitlization iodine monitors detection device in the utility model.
Specific embodiment
The utility model is described in detail below in conjunction with attached drawing and specific embodiment, in the signal of this utility model
Property embodiment and explanation be used to explain the utility model, but be not intended to limit the scope of the present invention.
Referring to figs. 1 to Fig. 2, the utility model discloses a kind of digitlization iodine to monitor detection device, including shell 2, shell 2
Upper end is internally provided with detector 3, and the positive lower end of detector 3 is provided with iodine adsorption box 4 and iodine adsorption box 4 is separately connected
Air inlet pipe 5 and escape pipe 1, the iodine adsorption box 4 is interior to fill the impregnated cocoanut active charcoal of TEDA；The detector 3 is NaI
(Tl) scintillator detector has been embedded in241The source Am.Phototransistor 6 is provided with above the detector.
Circuit board one and ARM processing board are provided in the shell 2, be provided on the circuit board one preamplifier,
Digital channel unit, the preamplifier connection phototransistor and digital channel unit, the digital channel unit and ARM
Processing board connection.
The principles of the present invention are as follows: both 3 face iodine adsorption box 4 of detector is encapsulated in aerosol sampling channel,
The upper end is provided with phototransistor 6 and pressure pump access port 7, and detector side and upper end are by stainless steel cladding.To improve
To the adsorption efficiency of iodine, the impregnated cocoanut active charcoal of TEDA is used.For the stability for improving detector measurement power spectrum, NaI
(Tl) scintillator detector is embedded241The source Am carries out steady peak.
NaI (Tl) detector output signal, which is sent directly into digital multiple tracks (1024) after preceding putting, to be acquired.
ARM processing board to digital multi-channel acquisition to gamma spectrum analyzed, handled.
NaI (Tl) scintillator detector is embedded241The source Am carries out steady peak.
Digital multiple tracks, the design of ARM processing board form a front-end processing unit, with prison on two pieces of different circuit boards
The other equipment for surveying instrument are installed along on equipment supporter.
Front-end processing unit is communicated by RS485 interface with radiation processing unit on the spot, and measured data is transferred to
Radiation processing unit (LRP) is processed and displayed on the spot.
Technical solution disclosed in the utility model embodiment is described in detail above, it is used herein specifically
Embodiment is expounded the principle and embodiment of the utility model embodiment, and the explanation of above embodiments is only applicable to
Help understands the principle of the utility model embodiment；At the same time, for those skilled in the art, it is real according to the utility model
Example is applied, there will be changes in terms of specific embodiments and scope of application, in conclusion the content of the present specification should not be understood
For limitations of the present invention.
Claims (5)
1. a kind of digitlization iodine monitors detection device, which is characterized in that including shell, shell upper end is internally provided with detector,
The positive lower end of detector is provided with iodine adsorption box and iodine adsorption box is separately connected air inlet pipe and an air outlet pipe, the detector
Inside it is provided with241 AmSource.
2. digitlization iodine according to claim 1 monitors detection device, which is characterized in that the top of the detector is arranged
There is phototransistor.
3. digitlization iodine according to claim 1 or 2 monitors detection device, which is characterized in that the detector is NaI
(Tl) scintillator detector has been embedded in241 AmSource.
4. digitlization iodine according to claim 1 monitors detection device, which is characterized in that filling in the iodine adsorption box
The impregnated cocoanut active charcoal of TEDA.
5. digitlization iodine according to claim 1 monitors detection device, which is characterized in that be provided with circuit in the shell
Plate one and ARM processing board, preamplifier, digital channel unit are provided on the circuit board one, and the preamplifier connects
Phototransistor and digital channel unit are connect, the digital channel unit is connect with ARM processing board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821678353.7U CN208888376U (en) | 2018-10-16 | 2018-10-16 | A kind of digitlization iodine monitoring detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821678353.7U CN208888376U (en) | 2018-10-16 | 2018-10-16 | A kind of digitlization iodine monitoring detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208888376U true CN208888376U (en) | 2019-05-21 |
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ID=66516287
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821678353.7U Active CN208888376U (en) | 2018-10-16 | 2018-10-16 | A kind of digitlization iodine monitoring detection device |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112731510A (en) * | 2020-12-22 | 2021-04-30 | 西安中核核仪器有限公司 | Mobile radioactive iodine monitoring method |
-
2018
- 2018-10-16 CN CN201821678353.7U patent/CN208888376U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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