CN203241541U - Device for measuring high-concentration tritium in gas - Google Patents
Device for measuring high-concentration tritium in gas Download PDFInfo
- Publication number
- CN203241541U CN203241541U CN 201320271749 CN201320271749U CN203241541U CN 203241541 U CN203241541 U CN 203241541U CN 201320271749 CN201320271749 CN 201320271749 CN 201320271749 U CN201320271749 U CN 201320271749U CN 203241541 U CN203241541 U CN 203241541U
- Authority
- CN
- China
- Prior art keywords
- ionization chamber
- insulating part
- loam cake
- tracheae
- collector
- 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 - Fee Related
Links
Images
Landscapes
- Measurement Of Radiation (AREA)
Abstract
The utility model provides a device for measuring high-concentration tritium in gas. The device of the utility model is composed of two cylindrical ionization chambers with the same structure and material, and different sizes. With the device of the utility model adopted, influence of a memory effect on measurement results can be avoided, wherein the memory effect is caused by the adsorption of the tritium performed by chamber walls of the ionization chambers when the high-concentration tritium in the gas is measured, and long-term and accurate measurement of the high-concentration tritium in the gas can be realized. The device for measuring the high-concentration tritium in the gas of the utility model can completely satisfy the requirement for real-time and continuous measurement of high-concentration tritium in various places.
Description
Technical field
The utility model belongs to the radiation protection and environmental protection technical field, is specifically related to a kind of gas middle and high concentration tritium measurement mechanism.Be applicable to the real-time measurement of tritium concentration in tritium operator casing, secondary containers and other tritium containment vessel.
Background technology
Tritium is unique radioactive isotope of hydrogen, and the β ray ceiling capacity that the tritium decay is sent is 18.6keV, and its average energy is 5.65keV.Tritium may corrode containing material production, or causes the degeneration (embrittlement, aging) of material property.And, tritium can also endanger through sucking, eat and enter human body through intact skin infiltration, being absorbed by tissue and make it to be subject to internal radiation, because its radiological hazard and its characteristic in environment, in Radiation Protection Monitoring, the monitoring of tritium comes into one's own day by day.
The penetration capacity of the low energy β particle of tritium very a little less than, maximum range is 6 μ m in water, maximum range is 5mm only in air, is difficult to measure with common beta rediation detector, so want measurement of tritium the inside that contains tritium gas and introduce detector must be measured.
At present, the measurement for gas middle and high concentration tritium all is methods of the ionization chamber of employing.Yet, when tritium concentration is high, when especially tritiated water steam exists, ionization chamber will cause ionization chamber background greatly raise (will raise generally speaking 2 more than the order of magnitude) to a large amount of absorption of tritium owing to the locular wall material, this will directly cause the ionization chamber measurement result higher when the tritium concentration continuous monitoring, can't Measurement accuracy.In addition, pollute comparatively difficulty of rear ionization chamber decontamination, need to make for a long time the ionization chamber background recover normal.
Summary of the invention
Because locular wall to the memory effect that the absorption of tritium produces, improves the accuracy of high concentration tritium measurement, the purpose of this utility model provides a kind of gas middle and high concentration tritium measurement mechanism in order to eliminate that ionization chamber in the prior art is surveyed in the tritium.Eliminate the memory effect that the ionization chamber locular wall produces the absorption of tritium by the mode of signal compensation, realize the real-time measurement of gas middle and high concentration tritium.
Gas middle and high concentration tritium measurement mechanism of the present utility model is based on different geometries cylindrical when internal surface area is identical the different geometrical principle of volume, two the identical columnar ionization of internal surface area chambers are set, utilize its volume differences to measure as the sensitive volume of ionization chamber system.Measurement mechanism of the present utility model is based on two ionization chambers and makes up, and it is cylindrical that two ionization chambers are, and internal surface area is identical, adopts identical material and processes.When measuring, two opposite saturation voltages of ionization chamber difference additive polarity make two ionization chambers collect respectively positive ion and electronics, carry out meeting of signal again.Because internal surface area is identical, same to the Adsorption Phase of tritium at ionization chamber locular wall behind the excessive concentrations tritium, this part can be eliminated when two ionization chamber signals meet fully, the memory effect that is ionization chamber will effectively be eliminated, and the final output signal of ionization chamber system is two signals that the ionization chamber volume differences is exported.
The technical scheme that its technical matters that solves the utility model adopts is as follows:
Gas middle and high concentration tritium measurement mechanism of the present utility model is characterized in, described measurement mechanism contains two columniform the first ionization chamber, the second ionization chambers that structure is identical.Wherein, the first ionization chamber comprises shell, the first insulating part, ionization chamber locular wall, the second insulating part, the first tracheae, the first collector, the 3rd insulating part, the 4th insulating part, protection ring, the 5th insulating part, ionization chamber loam cake, the 6th insulating part, high tension terminal, nut, high-voltgae pothead, signal cable head, the second tracheae; Its annexation is, described collector is positioned on the first ionization chamber central axis, and it is inner that the lower end of collector is suspended on the first ionization chamber, and the upper end is provided with the 4th insulating part, and the upper end of collector and the 4th insulating part are fixed by nut; The 4th insulating part is outside equipped with protection ring, and protection ring is outside equipped with the 5th insulating part, and the 5th insulating part is provided with the ionization chamber loam cake; The ionization chamber locular wall is connected with the ionization chamber loam cake; High tension terminal is fixed on the ionization chamber and covers; The first tracheae is connected on the ionization chamber locular wall, the first tracheae and be provided with the second insulating part between the locular wall of chamber; Described ionization chamber locular wall, ionization chamber loam cake all are arranged in the shell, are provided with the first insulating part between ionization chamber locular wall and the shell; Be provided with the 6th insulating part between ionization chamber loam cake and the base; High-voltgae pothead and signal cable head are fixed on the base side; The collector of described the first ionization chamber, ionization chamber locular wall, shell are concentric setting;
Described the first ionization chamber and the second ionization chamber shell all are fixed on the base; The first ionization chamber is connected with the second ionization chamber by the second tracheae, is provided with the 3rd insulating part between the ionization chamber loam cake of the second tracheae and the first ionization chamber, is provided with insulating part between the ionization chamber loam cake of the second tracheae and the second ionization chamber; The first collector of the first ionization chamber is connected by signal cable with the second collector of the second ionization chamber.
Be interference fit between described collector, the 4th insulating part, protection ring, the 5th insulating part, the ionization chamber loam cake; Be interference fit between the second tracheae, ionization chamber loam cake, the 3rd insulating part; Be interference fit between the first tracheae, ionization chamber locular wall, the second insulating part.
Described the first ionization chamber is identical with the internal surface area of the second ionization chamber.
The material that adopts in described the first ionization chamber, the second ionization chamber is identical.
Principle of work of the present utility model is that locular wall is eliminated to the memory effect of the absorption generation of tritium by the system that adopts two ionization chambers to form.During work, the opposite high pressure of additive polarity on two ionization chamber high-field electrodes, the signal that the ionization chamber collector is collected is opposite, the method of the collector by two ionization chambers of direct connection meets the output signal of two ionization chambers, eliminate the memory effect that the ionization chamber locular wall produces the absorption of tritium fully, realize the Measurement accuracy of gas middle and high concentration tritium.The utility model satisfies the requirement that various places (such as glove box, secondary containers and other tritium containment vessel) middle and high concentration tritium on-line continuous is measured fully.
Description of drawings
Fig. 1 is gas middle and high concentration tritium measurement mechanism structural representation of the present utility model.
Among the figure: 1. shell 2. first insulating parts 3. ionization chamber locular walls 4. second insulating parts 5. first tracheaes 6. first collectors 7. the 3rd insulating part 8. the 4th insulating part 9. protection rings 10. the 5th insulating part 11. ionization chamber loam cakes 12. the 6th insulating part 13. high tension terminals 14. nuts 15. high-voltgae potheads 16. signal cable heads 17. second tracheaes 18. bases.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is gas middle and high concentration tritium measurement mechanism structural representation of the present utility model.In Fig. 1, gas middle and high concentration tritium measurement mechanism of the present utility model contains two columniform the first ionization chamber I, the second ionization chamber II that structure is identical.Wherein, the first ionization chamber I comprises shell 1, the first insulating part 2, ionization chamber locular wall 3, the second insulating part 4, the first tracheae 5, the first collector 6, the 3rd insulating part 7, the 4th insulating part 8, protection ring 9, the 5th insulating part 10, ionization chamber loam cake 11, the 6th insulating part 12, high tension terminal 13, nut 14, high-voltgae pothead 15, signal cable head 16, the second tracheae 17; Its annexation is, described collector 6 is positioned on the first ionization chamber I central axis, and it is inner that the lower end of collector 6 is suspended on the first ionization chamber I, and the upper end is provided with the 4th insulating part 8, and the upper end of collector 6 is fixed by nut 14 with the 4th insulating part 8; The 4th insulating part 8 is outside equipped with protection ring 9, and protection ring 9 is outside equipped with the 5th insulating part 10, the five insulating parts 10 and is provided with ionization chamber loam cake 11; Ionization chamber locular wall 3 is connected with ionization chamber loam cake 11; High tension terminal 13 is fixed on the ionization chamber loam cake 11; The first tracheae 5 is connected on the ionization chamber locular wall 3, the first tracheae 5 and from being provided with the second insulating part 4 between the chamber locular wall 3; Described ionization chamber locular wall 3, ionization chamber loam cake 11 all are arranged in the shell 1, are provided with the first insulating part 2 between ionization chamber locular wall 3 and the shell 1; Be provided with the 6th insulating part 12 between ionization chamber loam cake 11 and the base 18; High-voltgae pothead 15 is fixed on base 18 sides with signal cable head 16; The collector 6 of described the first ionization chamber, ionization chamber locular wall 3, shell 1 are concentric setting;
Described the first ionization chamber I and the second ionization chamber II shell all are fixed on the base 18; The first ionization chamber I is connected with the second ionization chamber II by the second tracheae 17, is provided with between the ionization chamber loam cake 11 of the second tracheae 17 and the first ionization chamber I between the ionization chamber loam cake of the 3rd insulating part 7, the second tracheaes 17 and the second ionization chamber II and is provided with insulating part; The first collector 6 of the first ionization chamber I is connected by signal cable with the second collector of the second ionization chamber.
Be interference fit between described collector 6, the 4th insulating part 8, protection ring 9, the 5th insulating part 10, the ionization chamber loam cake 11; Be interference fit between the second tracheae 17, ionization chamber loam cake 11, the 3rd insulating part 7; Be interference fit between the first tracheae 5, ionization chamber locular wall 3, the second insulating part 4.
Described the first ionization chamber I is identical with the internal surface area of the second ionization chamber II, and volume is different.
The material that adopts in described the first ionization chamber I, the second ionization chamber II is identical.
Claims (3)
1. gas middle and high concentration tritium measurement mechanism, it is characterized in that: described measurement mechanism contains two columniform the first ionization chamber, the second ionization chambers that structure is identical; Wherein, the first ionization chamber comprises shell (1), the first insulating part (2), ionization chamber locular wall (3), the second insulating part (4), the first tracheae (5), the first collector (6), the 3rd insulating part (7), the 4th insulating part (8), protection ring (9), the 5th insulating part (10), ionization chamber loam cake (11), the 6th insulating part (12), high tension terminal (13), nut (14), high-voltgae pothead (15), signal cable head (16), the second tracheae (17); Its annexation is, described collector (6) is positioned on the first ionization chamber central axis, it is inner that the lower end of collector (6) is suspended on the first ionization chamber, and the upper end is provided with the 4th insulating part (8), and the upper end of collector (6) and the 4th insulating part (8) are fixing by nut (14); The 4th insulating part (8) is outside equipped with protection ring (9), and protection ring (9) is outside equipped with the 5th insulating part (10), and the 5th insulating part (10) is provided with ionization chamber loam cake (11); Ionization chamber locular wall (3) is connected with ionization chamber loam cake (11); High tension terminal (13) is fixed on the ionization chamber loam cake (11); The first tracheae (5) is connected on the ionization chamber locular wall (3), the first tracheae (5) and be provided with the second insulating part (4) between the chamber locular wall (3); Described ionization chamber locular wall (3), ionization chamber loam cake (11) all are arranged in the shell (1), are provided with the first insulating part (2) between ionization chamber locular wall (3) and the shell (1); Be provided with the 6th insulating part (12) between ionization chamber loam cake (11) and the base (18); High-voltgae pothead (15) is fixed on base (18) side with signal cable head (16); The collector of described the first ionization chamber (6), ionization chamber locular wall (3), shell (1) are concentric setting;
Described the first ionization chamber and the second ionization chamber shell all are fixed on the base (18); The first ionization chamber is connected with the second ionization chamber by the second tracheae (17), be provided with the 3rd insulating part (7) between the ionization chamber loam cake (11) of the second tracheae (17) and the first ionization chamber, be provided with insulating part between the ionization chamber loam cake of the second tracheae (17) and the second ionization chamber; First collector (6) of the first ionization chamber is connected by signal cable with the second collector of the second ionization chamber.
2. a kind of gas middle and high concentration tritium measurement mechanism according to claim 1, it is characterized in that: described collector (6), the 4th insulating part (8), protection ring (9), the 5th insulating part (10), ionization chamber loam cake are interference fit between (11); The second tracheae (17), ionization chamber loam cake (11), the 3rd insulating part are interference fit between (7); Be interference fit between the first tracheae (5), ionization chamber locular wall (3), the second insulating part (4).
3. a kind of gas middle and high concentration tritium measurement mechanism according to claim 1, it is characterized in that: described the first ionization chamber is identical with the internal surface area of the second ionization chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320271749 CN203241541U (en) | 2013-05-20 | 2013-05-20 | Device for measuring high-concentration tritium in gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320271749 CN203241541U (en) | 2013-05-20 | 2013-05-20 | Device for measuring high-concentration tritium in gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203241541U true CN203241541U (en) | 2013-10-16 |
Family
ID=49318823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320271749 Expired - Fee Related CN203241541U (en) | 2013-05-20 | 2013-05-20 | Device for measuring high-concentration tritium in gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203241541U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267798A (en) * | 2013-05-20 | 2013-08-28 | 中国工程物理研究院核物理与化学研究所 | Measuring device and measuring method of high-concentration tritium in gas |
| CN106970410A (en) * | 2017-03-06 | 2017-07-21 | 中国工程物理研究院材料研究所 | Tritium level measurement apparatus and method |
| CN113253328A (en) * | 2021-06-29 | 2021-08-13 | 中国核动力研究设计院 | On-line measuring system and method for medium and low concentration tritium |
-
2013
- 2013-05-20 CN CN 201320271749 patent/CN203241541U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267798A (en) * | 2013-05-20 | 2013-08-28 | 中国工程物理研究院核物理与化学研究所 | Measuring device and measuring method of high-concentration tritium in gas |
| CN103267798B (en) * | 2013-05-20 | 2015-07-15 | 中国工程物理研究院核物理与化学研究所 | Measuring device and measuring method of high-concentration tritium in gas |
| CN106970410A (en) * | 2017-03-06 | 2017-07-21 | 中国工程物理研究院材料研究所 | Tritium level measurement apparatus and method |
| CN113253328A (en) * | 2021-06-29 | 2021-08-13 | 中国核动力研究设计院 | On-line measuring system and method for medium and low concentration tritium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103267798B (en) | Measuring device and measuring method of high-concentration tritium in gas | |
| CN103257356B (en) | Tritium concentration measurement mechanism in airtight container | |
| CN101149438B (en) | Tritium-measuring method and equipment | |
| CN102928864B (en) | Method and system for measuring gas tritium based on multi-wire proportional chamber | |
| CN202533587U (en) | Ionization chamber type detector used for measurement of strong gamma radiation field under accident conditions | |
| CN203241541U (en) | Device for measuring high-concentration tritium in gas | |
| CN202903278U (en) | Continuous nuclear material level monitoring detector | |
| CN201096892Y (en) | Portable alpha, beta, gamma surface pollution measuring instrument | |
| CN201666954U (en) | Radon synchroballistic type tritium in the air continuous monitoring instrument | |
| CN112230265B (en) | Radon measuring chamber | |
| CN201233384Y (en) | Atmospheric air net gate pulse ionization chamber radon survey instrument | |
| CN203616482U (en) | Measuring system for detection efficiency of airbone radioactive iodine measuring instrument | |
| CN103616712B (en) | The measuring method of the detection efficiency of Airborne Radioiodine surveying instrument | |
| CN110058292B (en) | Portable gamma spectrometer radiation environment monitoring mobile station | |
| CN109444946A (en) | A kind of intelligence radon thorium analyzer | |
| CN204371325U (en) | A kind of high temperature slim-hole natural gamma-ray spectroscopy tool | |
| CN203658589U (en) | Airborne radioiodine activity real-time detection device | |
| CN206193155U (en) | Power line's trouble supervisory equipment | |
| CN203444118U (en) | Radioactive gas activity monitoring device of pipeline containing flammable and explosive gases | |
| CN113238274B (en) | Wide-range coaxial through-wall double-ionization-chamber area gamma radiation detection method | |
| CN203241542U (en) | Device for measuring tritium concentration in sealed container | |
| CN209264968U (en) | A kind of flow-type ionization chamber measuring tritium gas | |
| CN203310438U (en) | Sulfur hexafluoride online monitoring device | |
| CN205091468U (en) | A scintillation detector for hanging down sample -out count | |
| CN219997309U (en) | Ionization chamber detector |
Legal Events
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 Termination date: 20190520 |