CN219777249U - Optimized small-sized aquatic carbon-14 sample preparation device - Google Patents
Optimized small-sized aquatic carbon-14 sample preparation device Download PDFInfo
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- CN219777249U CN219777249U CN202320269763.0U CN202320269763U CN219777249U CN 219777249 U CN219777249 U CN 219777249U CN 202320269763 U CN202320269763 U CN 202320269763U CN 219777249 U CN219777249 U CN 219777249U
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- liquid
- sample
- carbon
- sample preparation
- reaction tank
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- OKTJSMMVPCPJKN-NJFSPNSNSA-N Carbon-14 Chemical compound [14C] OKTJSMMVPCPJKN-NJFSPNSNSA-N 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 72
- 238000006243 chemical reaction Methods 0.000 claims abstract description 27
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000002699 waste material Substances 0.000 claims abstract description 19
- 238000005070 sampling Methods 0.000 claims description 8
- 238000002347 injection Methods 0.000 abstract description 6
- 239000007924 injection Substances 0.000 abstract description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 14
- 239000007789 gas Substances 0.000 description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 11
- 229910052799 carbon Inorganic materials 0.000 description 11
- 229910002092 carbon dioxide Inorganic materials 0.000 description 7
- 239000001569 carbon dioxide Substances 0.000 description 7
- 239000012159 carrier gas Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 230000002285 radioactive effect Effects 0.000 description 5
- OKTJSMMVPCPJKN-IGMARMGPSA-N Carbon-12 Chemical compound [12C] OKTJSMMVPCPJKN-IGMARMGPSA-N 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000020477 pH reduction Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000009279 wet oxidation reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005025 nuclear technology Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The utility model relates to the technical field of preparation devices, in particular to an optimized small-sized carbon-14 sample preparation device in water, which comprises a microcomputer controller, a sample injection meter, an air inlet device, a reagent buffer liquid inlet device, a reactor, a heater, a sample collector and a waste liquid discharge device; the sample introduction meter comprises a liquid pump, a liquid mass flowmeter and a hydraulic sensor; the air inlet device comprises an air bottle, a program-controlled air flowmeter and an anti-suck-back device; the reactor comprises a reaction tank and a stirrer. The sample injection volume error of the utility model is reduced to less than 1% from the original sample injection volume error of less than 5%, and the liquid draining device comprises an active liquid draining device and a passive liquid draining device; the device has cleaner liquid discharge and longer service life of a liquid discharge pipeline; the device is more intelligent, and can prevent the liquid of the collector from being sucked backwards when the sample preparation operation of the device is suddenly powered off, disconnected or suddenly stopped; the microcomputer control program is added with a manual reagent pipeline cleaning program, so that the reagent pipeline is conveniently cleaned after sample preparation is finished, and the service life of the reagent pipeline of the device is longer.
Description
Technical Field
The utility model relates to the technical field of preparation devices, in particular to an optimized small-sized carbon-14 sample preparation device in water.
Background
Radioactive carbon-14 element source: astronomical nuclides and artificial nuclides. With the widespread use of nuclear technology, the content of carbon-14 in the environment gradually increases. Carbon-12 is an important component element of organic substances, takes part in the circulation of biosphere substances, and radioactive element carbon-14 is an isotope of carbon-12, and can take part in the circulation of biosphere substances like carbon-12, and carbon-14 is a pure beta radioactive element with a half-life of 5730 years. Carbon-14 can have a long-term internal irradiation effect on the organism after entering the organism. The sampling and monitoring of radioactive carbon-14 in an environmental water sample are very necessary. There is a particular need to monitor the carbon-14 content of liquid emissions from nuclear power plants, nuclear waste treatment plants, and the like.
For environmental radioactivity monitoring, a series of standard specifications are issued by the country. Such as: emission specifications for radioactive liquid effluents of nuclear power plants (70214587-2011) define emission limits for carbon-14 in liquid effluents; the technical Specification for monitoring radiation Environment (80J 61-2021) specifies the locations, frequencies, etc. where carbon-14 needs to be monitored.
At present, the activity of carbon-14 in water cannot be directly monitored, and measurement is carried out through a liquid scintillation counter after pretreatment is needed. The treatment of the environmental water sample with low carbon content is provided with a large (20L) water carbon-14 sample preparation device, the large water carbon-14 sample preparation device is not suitable for the water sample with high carbon content, and the small (1L) water carbon-14 sample preparation device is suitable for the water sample treatment with high carbon content. However, the current small (1L) carbon-14 sample preparation device in water has the problem that the whole sample preparation process cannot be fully automated; the sampling volume has a certain error; the waste liquid is not discharged thoroughly, and the service life of the pipeline is shorter; the reagent pipeline is inconvenient to clean, and the service life of the reagent pipeline is prolonged.
Disclosure of Invention
The utility model aims to provide an optimized small-sized carbon-14 sample preparation device in water, which aims to solve the problems that in the background technology, a reagent pipeline is inconvenient to clean, the service life of the reagent pipeline is prolonged, and the like.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
an optimized small-sized carbon-14 sample preparation device in water comprises a microcomputer controller, a sample introduction meter, an air inlet device, a reagent buffer liquid inlet device, a reactor, a heater, a sample collector and a waste liquid discharge device;
the sample introduction meter comprises a liquid pump, a liquid mass flowmeter and a hydraulic sensor;
the air inlet device comprises an air bottle, a program-controlled air flowmeter and an anti-suck-back device;
the reactor comprises a reaction tank and a stirrer, wherein the stirrer is arranged in the reaction tank;
the waste drain includes a passive drain and an active drain.
Preferably, the output end of the liquid extracting pump is connected with the reaction tank, and the liquid extracting pump is also connected with a liquid mass flowmeter and a hydraulic sensor.
Preferably, the output end of the gas cylinder is connected with the input end of the program-controlled gas flowmeter.
Preferably, the output end of the program-controlled gas flowmeter is connected with the input end of the anti-suck-back device.
Preferably, the output end of the anti-backflow device is connected to the reaction tank.
Preferably, the output end of the reaction tank is connected with a sample collector and a waste liquid discharger.
Preferably, the stirrer is built in a heater.
Compared with the prior art, the utility model has the beneficial effects that:
1. in the optimized small-sized carbon-14 sample preparation device, inorganic carbon is collected by an acidification and gas-expelling mode; organic carbon is collected by wet oxidation purge. Inorganic carbon and organic carbon in the sample water sample are converted into carbon dioxide, and the carbon dioxide is carried into a collector through carrier gas (nitrogen) and absorbed by alkali liquor. The main working steps of the improved small-sized aquatic carbon-14 sample preparation device are as follows: the device accurately extracts a certain volume of water sample to be treated through the sample introduction meter, sequentially adds various reagents into the reactor through the reagent buffer, heats the reaction tank through the heater in the process, introduces carrier gas (nitrogen) into the reaction tank through the air inlet device, and feeds carbon dioxide carrier tape generated in the reactor into the collector to be collected, after sample preparation is finished, heating is stopped, after the temperature reaches a set temperature, the air inlet device is controlled to stop ventilation, and finally the waste liquid in the reactor is controlled to be discharged by the waste liquid discharger. The whole process is controlled by a microcomputer controller, so that the automation of the whole process is realized.
2. The sample injection volume error of the optimized small-sized aquatic carbon-14 sample preparation device is reduced to less than 1% from the original sample injection volume error of less than 5%, and the liquid draining device comprises an active liquid draining device and a passive liquid draining device; the device has cleaner liquid discharge and longer service life of a liquid discharge pipeline; the device is more intelligent, and can prevent the liquid of the collector from being sucked backwards when the sample preparation operation of the device is suddenly powered off, disconnected or suddenly stopped; the microcomputer control program is added with a manual reagent pipeline cleaning program, so that the reagent pipeline is conveniently cleaned after sample preparation is finished, and the service life of the reagent pipeline of the device is longer.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain, however, the utility model.
Fig. 1 is a schematic view of the constitution of the present utility model.
Meaning of each reference numeral in the drawings:
10. a microcomputer controller;
20. a sample introduction meter; 21. a liquid pump; 22. a liquid mass flow meter; 23. hydraulic sensor
30. An air intake; 31. a gas cylinder; 32. a programmable gas flowmeter; 33. a suck-back prevention device;
40. a reagent buffer liquid inlet device;
50. a reactor; 51. a reaction tank; 52. a stirrer;
60. a heater;
70. a sample collector;
80. a waste liquid discharger; 81. a passive drain; 82. an active liquid draining device.
Detailed Description
The following description of embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center", "vertical", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
An optimized small-sized carbon-14 sample preparation device in water, as shown in fig. 1, comprises a microcomputer controller 10, a sample introduction meter 20, an air inlet device 30, a reagent buffer liquid inlet device 40, a reactor 50, a heater 60, a sample collector 70 and a waste liquid discharge device 80; the sample metering device 20 comprises a liquid pump 21, a liquid mass flowmeter 22 and a hydraulic sensor 23; the air inlet device 30 comprises a gas cylinder 31, a program-controlled gas flowmeter 32 and an anti-suck-back device 33; the reactor 50 includes a reaction tank 51 and a stirrer 52, the stirrer 52 being disposed in the reaction tank 51; the waste liquid discharger 80 comprises a passive liquid discharger 81 and an active liquid discharger 82, the error of the sample injection volume is reduced to less than 1% from the original less than 5%, and the liquid discharger comprises the active liquid discharger and the passive liquid discharger; the device has cleaner liquid discharge and longer service life of a liquid discharge pipeline; the device is more intelligent, and can prevent the liquid of the collector from being sucked backwards when the sample preparation operation of the device is suddenly powered off, disconnected or suddenly stopped; the microcomputer control program is added with a manual reagent pipeline cleaning program, so that the reagent pipeline is conveniently cleaned after sample preparation is finished, and the service life of the reagent pipeline of the device is longer.
Further, the output end of the liquid pump 21 is connected with a reaction tank 51, and the liquid pump 21 is also connected with a liquid mass flowmeter 22 and a hydraulic sensor 23.
Specifically, the output end of the gas cylinder 31 is connected to the input end of the program-controlled gas flow meter 32, and the output end of the program-controlled gas flow meter 32 is connected to the input end of the suck-back preventer 33.
The output end of the reverse suction preventer 33 is connected to the reaction tank 51, and the output end of the reaction tank 51 is connected to the sample collector 70 and the waste liquid discharger 80, and the stirrer 52 is built in the heater 60.
The optimized small-sized carbon-14 sample preparation device collects inorganic carbon in an acidification and gas-expelling mode; organic carbon is collected by wet oxidation purge. Inorganic carbon and organic carbon in the sample water sample are converted into carbon dioxide, and the carbon dioxide is carried into a collector through carrier gas (nitrogen) and absorbed by alkali liquor. The main working steps of the improved small-sized aquatic carbon-14 sample preparation device are as follows: the device accurately extracts a certain volume of water sample to be treated through the sample introduction meter, sequentially adds various reagents into the reactor through the reagent buffer, heats the reaction tank through the heater in the process, introduces carrier gas (nitrogen) into the reaction tank through the air inlet device, and feeds carbon dioxide carrier tape generated in the reactor into the collector to be collected, after sample preparation is finished, heating is stopped, after the temperature reaches a set temperature, the air inlet device is controlled to stop ventilation, and finally the waste liquid in the reactor is controlled to be discharged by the waste liquid discharger. The whole process is controlled by a microcomputer controller, so that the automation of the whole process is realized.
The working principle of the optimized small-sized aquatic carbon-14 sample preparation device is as follows: sample preparation: firstly, connecting a device and checking the air tightness of the device; setting parameters such as sampling volume, heating temperature, sample preparation time, ventilation volume, liquid discharge temperature and the like on the microcomputer controller 10; preparing a water sample to be measured; adding a responsive reagent to the reagent buffer 40 and adding an appropriate amount of collection fluid to the collector 70; opening a valve of a gas cylinder 31 in the gas inlet device 30;
the preparation process of the specific body comprises the following steps: clicking a start button on the microcomputer controller 10 to start sample preparation, firstly controlling the sample introduction meter 20 to accurately extract a certain volume of water sample to be detected into the reaction tank 51 of the reactor 50, controlling the air inlet device 30 to be filled with carrier gas (nitrogen), then controlling the reagent buffer liquid inlet device 40 to orderly add reagents, simultaneously controlling the stirring device 52 of the reactor 50 to stir the reaction tank, simultaneously controlling the heater 60 to heat the reaction tank 51, and simultaneously controlling carbon dioxide generated in the reaction tank 51 to enter the sample collector 70 by carrier gas (nitrogen) to be collected, after the reaction is completed, controlling the heating device 60 to stop heating by the microcomputer controller 10, and controlling the air inlet device 30 to stop air inlet and simultaneously opening the anti-backflow device 33 after isothermal cooling to a set temperature; when the liquid temperature in the reaction tank 51 reaches the discharge temperature, the microcomputer controller 10 controls the waste liquid discharge device 80 to discharge the waste liquid. Finally, staff can collect the collected liquid in the collector 70 for subsequent treatment, close the valve of the gas cylinder 31 of the gas inlet device 30, and close the power supply of the device after cleaning the device.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (7)
1. An optimized small-sized aquatic carbon-14 sample preparation device is characterized in that: comprises a microcomputer controller (10), a sample introduction meter (20), an air inlet device (30), a reagent buffer liquid inlet device (40), a reactor (50), a heater (60), a sample collector (70) and a waste liquid discharge device (80);
the sample introduction meter (20) comprises a liquid pump (21), a liquid mass flowmeter (22) and a hydraulic sensor (23);
the air inlet device (30) comprises a gas cylinder (31), a program-controlled gas flowmeter (32) and an anti-suck-back device (33);
the reactor (50) comprises a reaction tank (51) and a stirrer (52), wherein the stirrer (52) is arranged in the reaction tank (51);
the waste liquid discharger (80) comprises a passive liquid discharger (81) and an active liquid discharger (82).
2. The optimized small-scale in-water carbon-14 sampling device of claim 1, wherein: the output end of the liquid pump (21) is connected with the reaction tank (51), and the liquid pump (21) is also connected with a liquid mass flowmeter (22) and a hydraulic sensor (23).
3. The optimized small-scale in-water carbon-14 sampling device of claim 1, wherein: the output end of the gas cylinder (31) is connected with the input end of the program-controlled gas flowmeter (32).
4. An optimised small-scale in-water carbon-14 sample preparation device as claimed in claim 3, wherein: the output end of the program-controlled gas flowmeter (32) is connected with the input end of the anti-suck-back device (33).
5. The optimized small-scale in-water carbon-14 sampling device of claim 4, wherein: the output end of the anti-suck-back device (33) is connected to the reaction tank (51).
6. The optimized small-scale in-water carbon-14 sampling device of claim 1, wherein: the output end of the reaction tank (51) is connected with the sample collector (70) and the waste liquid discharger (80).
7. The optimized small-scale in-water carbon-14 sampling device of claim 1, wherein: the stirrer (52) is built-in to a heater (60).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320269763.0U CN219777249U (en) | 2023-02-21 | 2023-02-21 | Optimized small-sized aquatic carbon-14 sample preparation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320269763.0U CN219777249U (en) | 2023-02-21 | 2023-02-21 | Optimized small-sized aquatic carbon-14 sample preparation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219777249U true CN219777249U (en) | 2023-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320269763.0U Active CN219777249U (en) | 2023-02-21 | 2023-02-21 | Optimized small-sized aquatic carbon-14 sample preparation device |
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| Country | Link |
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| CN (1) | CN219777249U (en) |
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- 2023-02-21 CN CN202320269763.0U patent/CN219777249U/en active Active
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