CN113324777B - Polymorphic radioactive iodine environment simulation and equipment comprehensive evaluation equipment - Google Patents
Polymorphic radioactive iodine environment simulation and equipment comprehensive evaluation equipment Download PDFInfo
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- CN113324777B CN113324777B CN202110453072.1A CN202110453072A CN113324777B CN 113324777 B CN113324777 B CN 113324777B CN 202110453072 A CN202110453072 A CN 202110453072A CN 113324777 B CN113324777 B CN 113324777B
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- 230000002285 radioactive effect Effects 0.000 title claims abstract description 36
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 239000011630 iodine Substances 0.000 title claims abstract description 24
- 229910052740 iodine Inorganic materials 0.000 title claims abstract description 24
- 238000004088 simulation Methods 0.000 title claims abstract description 17
- 238000011156 evaluation Methods 0.000 title claims abstract description 14
- 238000012360 testing method Methods 0.000 claims abstract description 112
- 239000000463 material Substances 0.000 claims abstract description 34
- 238000001179 sorption measurement Methods 0.000 claims abstract description 26
- 238000002347 injection Methods 0.000 claims abstract description 15
- 239000007924 injection Substances 0.000 claims abstract description 15
- 239000000443 aerosol Substances 0.000 claims abstract description 10
- INQOMBQAUSQDDS-UHFFFAOYSA-N iodomethane Chemical compound IC INQOMBQAUSQDDS-UHFFFAOYSA-N 0.000 claims description 7
- 230000007613 environmental effect Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- XMBWDFGMSWQBCA-RNFDNDRNSA-M iodine-131(1-) Chemical compound [131I-] XMBWDFGMSWQBCA-RNFDNDRNSA-M 0.000 claims 4
- 230000010354 integration Effects 0.000 claims 2
- 239000007789 gas Substances 0.000 abstract description 29
- 239000003344 environmental pollutant Substances 0.000 abstract 2
- 231100000719 pollutant Toxicity 0.000 abstract 2
- 238000000746 purification Methods 0.000 description 16
- 239000000700 radioactive tracer Substances 0.000 description 6
- 238000011160 research Methods 0.000 description 6
- 239000003463 adsorbent Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000004154 testing of material Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- 238000004887 air purification Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 239000010857 liquid radioactive waste Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/008—Subject matter not provided for in other groups of this subclass by doing functionality tests
-
- 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
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Radiation (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention relates to a multi-form radioactive iodine environment simulation and equipment comprehensive evaluation device which comprises a filter prototype test loop, an adsorption material test loop and an air bypass loop, wherein the adsorption material test loop and the air bypass loop are connected with the filter prototype test loop, the filter prototype test loop comprises a filter prototype, a test loop air inlet pipe connected with an air inlet end of the filter prototype, a test loop air outlet pipe connected with an air outlet end of the filter prototype, a trace gas injection port and an aerosol injection port which are arranged on the test loop air inlet pipe, an online gamma spectrometer connected with the test loop air inlet pipe and the test loop air outlet pipe, and other measuring instruments for measuring other nuclides or gases which are added according to requirements. The equipment can simulate and reappear the ubiquitous temperature and humidity environment conditions of the nuclear facility from normal operation to the pollutant gas discharged under the severe accident working condition, is used for researching the prototype of the material or equipment which is operated under the pollutant condition, and has high simulation efficiency and reliability.
Description
Technical Field
The invention relates to the field of radioactive gaseous iodine simulation and purification research, in particular to polymorphic radioactive iodine environment simulation and equipment comprehensive evaluation equipment.
Background
Controlling the release of radioactive gaseous substances into the environment using air purification equipment installed in ventilation systems is a major nuclear safety concern. The iodine adsorber is used as a main purification device of a ventilation system of a nuclear power plant and a research pile and is used for controlling the release of gaseous radioactive iodine under all foreseeable conditions (including accident working conditions and normal working conditions). Since the nuclear accident of the Fudao, for gas emission during normal operation of nuclear facilities, the supervision departments at home and abroad are improving more strict management and application requirements, and related design institutes and equipment manufacturers are required to develop and improve the existing purification process or equipment, study the performance condition of the purification equipment under the accident condition, and the like.
At present, china has the capability of detecting the performance of a nuclear air purification system under the normal operation working condition of nuclear facilities, but in the comprehensive evaluation test of radioactive gas purification materials and equipment, a gaseous radioactive iodine generating device is not representative enough, and only single generation preparation of radioactive elemental iodine or methyl iodine can be used as a tracer for evaluation under specific conditions at present, so that the performance detection of the radioactive iodine adsorption materials and equipment cannot be used for simulation comprehensive evaluation of the actual environment, particularly accident working condition.
In order to study the performance of a radioactive gas purification system of a nuclear facility, particularly an iodine adsorption device, under normal operation conditions and in the case of severe core melting accidents of a nuclear reactor, so as to improve the performance of purifying radioactive iodine and achieve an ideal release effect, a test platform for researching and improving a gas emission purification system commonly existing in the nuclear facility needs to be designed. It is capable of simulating and reproducing the temperature, humidity and radioactive environmental conditions which are commonly present in the polluted gas discharged from the nuclear facilities from normal operation to severe accident conditions, and thus researching the prototype of the adsorption material, equipment or new purification system which is involved in the operation from normal operation to severe accident under the polluted conditions. In particular to the research on the adsorption mechanism of iodine in various adsorbents, especially novel adsorbents; the purification coefficient measurement of the material or iodine absorber is required to be designed according to the inherent physical and chemical characteristics, and the temperature, relative humidity and flow of carrier gas; in order to determine under what conditions the different adsorbents perform optimally, it is determined which conditions will reduce the performance of the adsorbent, thereby designing a more reliable and efficient novel adsorbent and apparatus.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides polymorphic radioactive iodine environment simulation and equipment comprehensive evaluation equipment.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a polymorphic radioactive iodine environmental simulation and equipment comprehensive evaluation equipment, includes filter prototype test circuit, the adsorption material test circuit that is connected with filter prototype test circuit, air bypass circuit, filter prototype test circuit includes the filter prototype, the test circuit intake pipe that is connected with filter prototype air inlet, the test circuit outlet duct that is connected with filter prototype air outlet, set up tracer gas filling opening, the aerosol filling opening in the test circuit intake pipe, the online gamma spectrometer that is connected with test circuit intake pipe, test circuit outlet duct, other nuclides or other measuring apparatu of gas measurement that are used for increasing as required.
Further, a condenser, a backup bed, an exhaust filter and a fan are arranged on the air outlet pipe of the test loop, and a storage device for collecting radioactive liquid is arranged on the air outlet pipe of the test loop.
Further, a humidifying system and a heating system are connected to the air inlet pipe of the test loop.
Further, the adsorption material test loop comprises an adsorption material test bed, an upper test bed connecting pipe and a lower test bed connecting pipe, wherein the upper test bed connecting pipe and the lower test bed connecting pipe are connected with the adsorption material test bed, the upper test bed connecting pipe is connected with the air inlet pipe of the test loop, the lower test bed connecting pipe is connected with the air outlet pipe of the test loop, and the adsorption material to be tested is placed on the adsorption material test bed.
Further, two ends of the air bypass loop are respectively connected with the test loop air inlet pipe and the test loop air outlet pipe.
Further, the end part of the test loop air inlet pipe is connected with a compressed air source.
Further, the filter prototype is placed in a purification test box, and the purification test box is placed in a negative pressure environment test box.
Further, the trace gas injected through the trace gas injection port comprises radioactive elemental iodine, methyl iodide or a mixture of the radioactive elemental iodine and the methyl iodide.
Further, the gas injected from the aerosol injection port is a radioactive gas with short service life, and the radioactive gas comprises F-18 and Xe-133.
Further, the air volume range of the adsorption material test loop is 0-6m 3 And/h, the air volume range of the test loop of the filter prototype is 10-100m 3 /h。
The beneficial effects of the invention are as follows: the equipment can simulate and reappear the ubiquitous temperature and humidity environment conditions in the polluted gas discharged from the nuclear facility from normal operation to severe accident working conditions, is used for researching materials or equipment prototypes which are operated under the polluted conditions, and is efficient and reliable in simulation, and the radioactive gas purifying materials and equipment are subjected to research on adsorption mechanisms, purifying coefficient tests and the like under various working conditions.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
As shown in fig. 1, the comprehensive evaluation device for the multi-form radioactive iodine environment simulation and equipment comprises a filter prototype test loop 1, an adsorption material test loop 2 and an air bypass loop 3 which are connected with the filter prototype test loop 1, wherein the filter prototype test loop 1 comprises a filter prototype 11, a test loop air inlet pipe 12 connected with the air inlet end of the filter prototype 11, a test loop air outlet pipe 13 connected with the air outlet end of the filter prototype 11, a trace gas injection port 14 and an aerosol injection port 15 which are arranged on the test loop air inlet pipe 12, an online gamma spectrometer 16 connected with the test loop air inlet pipe 12 and the test loop air outlet pipe 13, and other measuring instruments 17 for measuring other nuclides or gases which are added according to needs.
Further, a condenser 18, a backup bed 19, an exhaust filter 110, a fan 111, and a reservoir 112 for collecting radioactive liquid are provided on the test circuit air outlet pipe 13. The test circuit air inlet pipe 12 is connected with a humidifying system 113 and a heating system 114.
Further, the adsorbing material testing loop 2 comprises an adsorbing material testing bed 21, an upper testing bed connecting pipe 22 and a lower testing bed connecting pipe 23, wherein the upper testing bed connecting pipe 22 and the lower testing bed connecting pipe 23 are connected with the adsorbing material testing bed 21, the upper testing bed connecting pipe 22 is connected with the testing loop air inlet pipe 12, the lower testing bed connecting pipe 23 is connected with the testing loop air outlet pipe 13, and the adsorbing material to be tested is placed on the adsorbing material testing bed 21.
The two ends of the air bypass loop 3 are respectively connected with a test loop air inlet pipe 12 and a test loop air outlet pipe 13.
Further, an end of the test loop air inlet pipe 12 is connected with a compressed air source, the filter prototype 11 is placed in a purification test box, and the purification test box is placed in a negative pressure environment test box. The trace gas injected through the trace gas injection port 14 comprises radioactive elemental iodine, methyl iodide, or a mixture of both. The gas injected from the aerosol injection port 15 is a radioactive gas having a short lifetime, and the radioactive gas includes F-18 and Xe-133.
The air quantity range of the test loop 1 of the filter prototype is 10-100m 3 And/h, the air volume range of the adsorption material test loop 2 is 0-6m 3 /h。。
When the equipment is used, firstly, the system condition balance is carried out: the compressed air enters the test loop air inlet pipe 12, the humidifying system 113 and the heating system 114 after being filtered, the preset temperature and humidity conditions of the air flow are regulated, the air flow is sent to the downstream of the system through the air bypass loop 3 at the moment before the air flow reaches the preset conditions, and the loop is switched to the corresponding test loop after the air flow conditions are stable;
and (3) setting a tested object loop: selecting corresponding loop (adsorption material test loop or filter prototype test loop) according to experimental object (adsorption material or filter equipment), and opening corresponding valve and test instrument, wherein air volume of adsorption material test loop is 0-6m 3 And/h, the air quantity range of the test loop of the filter prototype is 10-100m 3 And (h) calculating the dosage of the tracer;
tracer injection: after the air flow conditions are balanced, the I is utilized upstream of the pipeline according to the research requirement 2 /CH 3 The I generation injection system selects radioactive elemental iodine, methyl iodine or a mixture of the two as a tracer, and aerosol tracer is injected at the same time under the more complex and representative condition, so that the gaseous effluent can more comprehensively simulate the real environment state under each working condition;
sample collection and analysis: representative environmental air flow is adsorbed and purified after passing through a test box or a sample clamp adsorbing material or a filter device, wherein an iodine sampling system is arranged at the upper and the lower stream of the filter device by a filter prototype test loop, the activity of a sample is measured by an online gamma spectrometer, the purifying efficiency of the filter is measured, the test of multiple adsorbing material samples can be realized by the adsorbing material test loop at the same time, and the activity of the sample is measured by an offline gamma spectrometer.
And (3) radioactive tail gas treatment: the wet gas stream containing radioactive iodine is collected by a special pipeline into the storage device 112 after passing through the condenser 18, firstly, the humidity in the gas stream is reduced, the purification effect and the service life of the backup bed are improved, and secondly, the tail liquid radioactive waste can be used for the treatment research of the liquid radioactive waste.
The equipment can simulate and reappear the temperature and humidity environment conditions which are commonly existed in the polluted gas discharged from the nuclear facility from normal operation to severe accident working condition, is used for researching the material or equipment prototype which is related to the operation under the polluted condition, and is used for researching the adsorption mechanism, the purification coefficient and the like of the radioactive gas purification material and equipment under various working conditions, and the simulation is efficient and reliable.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The comprehensive evaluation equipment comprises a filter prototype test loop, an adsorption material test loop and an air bypass loop which are connected with the filter prototype test loop, and is characterized in that the filter prototype test loop comprises a filter prototype, a test loop air inlet pipe connected with an air inlet end of the filter prototype, a test loop air outlet pipe connected with an air outlet end of the filter prototype, a trace gas injection port and an aerosol injection port which are arranged on the test loop air inlet pipe, an iodine sampling system connected with the test loop air inlet pipe and the test loop air outlet pipe, an aerosol measurement instrument added according to requirements, and an online gamma spectrometer connected with the iodine sampling system; the trace gas injected by the trace gas injection port comprises radioactive elemental iodine, methyl iodide or a mixture of the radioactive elemental iodine and the methyl iodide; the gas injected by the aerosol injection port is radioactive gas with short service life;
the air outlet pipe of the test loop is provided with a condenser, a backup bed, an exhaust filter and a fan, and a storage device for collecting radioactive liquid is arranged on the air outlet pipe of the test loop;
the filter prototype is placed in a purifying test box body, and the purifying test box body is placed in a negative pressure environment test box;
the adsorption material test loop comprises an adsorption material test bed, and an upper test bed connecting pipe and a lower test bed connecting pipe which are connected with the adsorption material test bed, wherein the upper test bed connecting pipe is connected with the test loop air inlet pipe, the lower test bed connecting pipe is connected with the test loop air outlet pipe, and the adsorption material to be tested is placed on the adsorption material test bed.
2. The comprehensive evaluation device for the polymorphic radioiodine environment simulation and equipment of claim 1, wherein the air inlet pipe of the test loop is connected with a humidifying system and a heating system.
3. The comprehensive evaluation device for the environment simulation and equipment of the multi-form radioactive iodine according to claim 1 or 2, wherein two ends of the air bypass loop are respectively connected with the air inlet pipe and the air outlet pipe of the test loop.
4. A multi-modal radioiodine environment simulation and equipment integration evaluating device as claimed in claim 3, wherein the end of the test loop air inlet pipe is connected with a compressed air source.
5. A multi-modal radioiodine environmental simulation and equipment integration evaluating device as claimed in claim 3, wherein the gas injected through the aerosol injection port comprises F-18, xe-133.
6. The comprehensive evaluation device for multi-modal radioiodine environment simulation and equipment of claim 3, wherein the air volume range of the adsorbing material test loop is 0-6m 3 And/h, the air volume range of the test loop of the filter prototype is 10-100m 3 /h。
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| CN202110453072.1A CN113324777B (en) | 2021-04-26 | 2021-04-26 | Polymorphic radioactive iodine environment simulation and equipment comprehensive evaluation equipment |
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| CN202110453072.1A CN113324777B (en) | 2021-04-26 | 2021-04-26 | Polymorphic radioactive iodine environment simulation and equipment comprehensive evaluation equipment |
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| CN113324777A CN113324777A (en) | 2021-08-31 |
| CN113324777B true CN113324777B (en) | 2024-01-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114544108B (en) * | 2021-11-26 | 2023-08-15 | 中国辐射防护研究院 | Multifunctional mobile iodine adsorber performance detection experimental system |
| CN114296125A (en) * | 2021-12-17 | 2022-04-08 | 中国原子能科学研究院 | Radioactive aerosol sampling test system |
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