CN209374071U - The adsorbent equipment of radioactivity inert gas γ spectrometry in a kind of nuclear facilities Airborne Effluent - Google Patents
The adsorbent equipment of radioactivity inert gas γ spectrometry in a kind of nuclear facilities Airborne Effluent Download PDFInfo
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- CN209374071U CN209374071U CN201822086632.0U CN201822086632U CN209374071U CN 209374071 U CN209374071 U CN 209374071U CN 201822086632 U CN201822086632 U CN 201822086632U CN 209374071 U CN209374071 U CN 209374071U
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- air inlet
- inert gas
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- nuclear facilities
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Abstract
The utility model relates to a kind of adsorbent equipments of radioactivity inert gas γ spectrometry in nuclear facilities Airborne Effluent, the Concentration Sampling of inert gas suitable for nuclear facilities Airborne Effluent, it include: container, the container includes circular cavity and the top being connected above the circular cavity is connected to chamber, is filled with cocoanut active charcoal in the annular shape cavity and top connection chamber；Air inlet tube assembly, the air inlet tube assembly include being removably mounted on the container and lower end extends to the air inlet pipe of circular one side lower part of cavity；Outlet pipe assembly, the outlet pipe assembly include being removably mounted on the container and lower end extends to the escape pipe of circular another side lower part of cavity；The adsorbent equipment of the utility model can the stable actinides in radioactivity inert gas be enriched with, thus by heating gas washing or other methods re-use.
Description
Technical field
The utility model belongs to the auxiliary device of γ spectrometry, and in particular to radioactivity in a kind of nuclear facilities Airborne Effluent
The adsorbent equipment of inert gas γ spectrometry.
Background technique
The operation of nuclear facilities enters after liquid effluent and Airborne Effluent discharge along with the discharge of radioactive substance
Environment, and radiation effect is caused to the public.
For the discharge amount for determining radioactive substance in nuclear facilities effluent, it is necessary to carry out corresponding Radiation monitoring.To airborne
The method that inert gas monitors in effluent is usually: being sampled using gas bomb, is placed on high-purity oleic acid and carries out
Measurement.However this method can not carry out accurately quantitatively the equal radgas of the krypton -85 in indifferent gas, it monitors krypton -85
Detection limit reach tens of thousands of Bq/m3.For the detection limit for reducing the radioactivity inert gases such as krypton -85, need using new suction
Adsorption device.
Summary of the invention
The utility model aim is for overcome the deficiencies in the prior art and provides and put in a kind of nuclear facilities Airborne Effluent
The adsorbent equipment of penetrating property inert gas γ spectrometry.
In order to achieve the above objectives, the technical solution adopted in the utility model is: radiating in a kind of nuclear facilities Airborne Effluent
The adsorbent equipment of property inert gas γ spectrometry, the Concentration Sampling of inert gas suitable for nuclear facilities Airborne Effluent, comprising:
Container, the container include circular cavity and are connected to the top being connected above the circular cavity
Cocoanut active charcoal is filled in chamber, the annular shape cavity and top connection chamber；
Air inlet tube assembly, the air inlet tube assembly include be removably mounted on the container and lower end extend to it is described
The air inlet pipe of circular one side lower part of cavity；
Outlet pipe assembly, the outlet pipe assembly include be removably mounted on the container and lower end extend to it is described
The escape pipe of circular another side lower part of cavity.
Further, the air inlet tube assembly further includes being mounted in the air inlet pipe to go out object product to probe gas current-carrying
Flowmeter and be mounted on the first shut-off valve in the air inlet pipe to control air inlet pipe opening and closing；The escape pipe group
Part further include be mounted on the escape pipe to the second shut-off valve for controlling escape pipe opening and closing and be mounted on it is described go out
Circulating pump on tracheae.
Further, the flow is calculated as digital flow totalizer, and the flowmeter is mounted on the outside of the container, institute
State the upstream that the first shut-off valve is located at the flowmeter.
Further, the air inlet tube assembly further includes being mounted in the air inlet pipe to filter in Airborne Effluent
The micronic filter of grain object, the micronic filter are located at the upstream of first shut-off valve.
Further, the air inlet tube assembly further includes being mounted in the air inlet pipe to adsorb water in Airborne Effluent
The molecular sieve column divided, the molecular sieve column are located at the upstream of the micronic filter.
Further, the circulating pump is located at the downstream of second shut-off valve.
Further, the top of the container is equipped with circular top cover to be opened/closed, and the circular top cover is radially from institute
State the top that the circular cavity is extended to above top connection chamber.
Further, the air inlet pipe and the escape pipe extend to the circle from the top of the circular cavity respectively
The lateral wall of the lower part of cyclic annular cavity, the air inlet pipe and the escape pipe close to the circular cavity.
Further, the dimensions of the cocoanut active charcoal is 10 mesh.
Further, the volume of a container is 3L, and the quality for the cocoanut active charcoal filled is 1.5kg.
Since above-mentioned technical proposal is used, the utility model has the advantage that the utility model compared with prior art
Nuclear facilities Airborne Effluent in radioactivity inert gas γ spectrometry adsorbent equipment, by select specific structure container simultaneously
Optimize the adsorbent in container, and air inlet pipe, escape pipe are removably mounted on to the two sides of container, and air inlet pipe and goes out
The lower end of tracheae extends respectively to container bottom, can steadily adsorb the radioactivity inert gas in Airborne Effluent in this way,
Actinides therein are enriched with, to be re-used by heating gas washing or other methods.
Detailed description of the invention
Attached drawing 1 is the adsorbent equipment of radioactivity inert gas γ spectrometry in the utility model nuclear facilities Airborne Effluent
Structural schematic diagram；
1, air inlet tube assembly；11, air inlet pipe；12, molecular sieve column；13, micronic filter；14, the first shut-off valve；15, it flows
Meter；2, outlet pipe assembly；21, escape pipe；22, the second shut-off valve；23, circulating pump；3, container；31, circular cavity；32,
Top is connected to chamber.
Specific embodiment
Embodiment shown in reference to the accompanying drawing is further described the utility model.
The adsorbent equipment of radioactivity inert gas γ spectrometry in nuclear facilities Airborne Effluent as shown in Figure 1, it is main to wrap
Include air inlet tube assembly 1, outlet pipe assembly 2 and container 3.
Wherein, container 3 includes that circular cavity 31 and the top that the top of circular cavity 31 is connected are connected to chamber
32, as Malin's cup-shaped receptacle；Material is AG3 aluminium alloy.Optimization, the internal diameter of the circular cavity 31 in the utility model is
35-45mm, outer diameter 90-110mm are highly 110-130mm, volume about 3L；The cocoanut active charcoal of about 10 mesh of filling in container 3
About 1.5kg；Circular top cover to be opened/closed is equipped at the top of container 3, circular top cover is used to open container 3, it is preferred that circular top cover edge
The top of its radial direction from top connection chamber 32 extends to the top of circular cavity 31, consequently facilitating to circular cavity 31 and
Cocoanut active charcoal is added in top connection chamber 32.
Container 3 is placed on high-purity oleic acid after sample acquisition and is measured.
Air inlet tube assembly 1 includes air inlet pipe 11, molecular sieve column 12, micronic filter 13, the first shut-off valve 14 and flowmeter
15 equal components.Air inlet pipe 11 is removably mounted on container 3, its lower end extends to the lower part of circular 31 side of cavity；
Molecular sieve column 12, micronic filter 13, the first shut-off valve 14 and flowmeter 15 are installed in air inlet pipe 11, they are respectively positioned on appearance
Outside device 3, and by upstream to downstream, (upstream, downstream are defined according to the direction of motion of Airborne Effluent in the order described above
) set gradually；Molecular sieve is filled in molecular sieve column 12, for adsorbing the water in Airborne Effluent；Micronic filter 13 was used for
Filter the particulate matter from Airborne Effluent；Flowmeter 15 is used to record the Airborne Effluent sample volume extracted.
Outlet pipe assembly 2 includes that escape pipe 21, the second shut-off valve 22 and circulating pump 23, escape pipe 21 are removably mounted on
On container 3, its lower end extends to the lower part of circular 31 other side of cavity；Second shut-off valve 22 be mounted on escape pipe 21 and
Outside container 3；For the installation of circulating pump 23 also on escape pipe 21, it is located at the downstream of the second shut-off valve 22, is used for from nuclear facilities
The sample extraction of Airborne Effluent.
Optimization, air inlet pipe 11 and escape pipe 21 are oppositely arranged, and extend to circle from the top of circular cavity 31 respectively
The lower part of cyclic annular cavity 31, and the lateral wall of air inlet pipe 11 and the close circular cavity 31 of escape pipe 21.
When in use, specific steps are as follows:
(a) cocoanut active charcoal (about 1.5kg) that full about 10 mesh are filled in container 3, seals circular top cover；Air inlet pipe is installed
11 and escape pipe 21, connection nuclear facilities Airborne Effluent sampling circuit (inlet flow rate may be about 1L/min, and continuous air extraction 1 week,
Airborne Effluent sample 10m can be acquired3)；
(b) circulating pump 23, the second shut-off valve 22 are successively opened, 10min is evacuated；
(c) 15 initial flow of flowmeter is reset；The first shut-off valve 14 is opened, extraction flow 1L/min is set；Continuously adopt
Sample acquires effluent sample about 10m3(i.e. inlet flow rate may be about 1L/min, continuous air extraction 1 week, can acquire Airborne Effluent
Sample 10m3)；
(d) the second shut-off valve 22 and the first shut-off valve 14 are successively closed, the integrated flux of recording flowmeter 15 removes air inlet
Pipe 11 and escape pipe 21, and container 3 is sealed；
(e) sealing container 3 is placed in 100 DEG C of baking oven and heats 2h, cooling is placed on high-purity oleic acid, and (50% is opposite
Detection efficient, time of measuring 8h, root it is estimated that the gamma-ray detection efficient for the 514keV that the decay of krypton -85 is released up to 2%,
The gamma-ray detection efficient of the 81keV released to XenonInjection decay is up to measuring on 5%)；
(f) container 3 is heated to 250 DEG C, connection helium tank carries out gas washing.
The Concentration Sampling of above-mentioned apparatus inert gas suitable for nuclear facilities Airborne Effluent, to krypton -85 and XenonInjection
Detection limit can reach 5Bq/m3And 0.01Bq/m3。
The above embodiments are only for explaining the technical ideas and features of the present invention, and its object is to allow be familiar with technique
Personage can understand the content of the utility model and implement accordingly, do not limit the protection scope of the present invention.
All equivalent change or modifications according to made by the spirit of the present invention essence, should all cover the protection scope of the utility model it
It is interior.
Claims (10)
1. it is airborne to be suitable for nuclear facilities for the adsorbent equipment of radioactivity inert gas γ spectrometry in a kind of nuclear facilities Airborne Effluent
The Concentration Sampling of inert gas in effluent characterized by comprising
Container, the container include circular cavity and the top being connected above the circular cavity are connected to chamber,
Cocoanut active charcoal is filled in the annular shape cavity and top connection chamber；
Air inlet tube assembly, the air inlet tube assembly include being removably mounted on the container and lower end extends to the annulus
The air inlet pipe of one side lower part of shape cavity；
Outlet pipe assembly, the outlet pipe assembly include being removably mounted on the container and lower end extends to the annulus
The escape pipe of another side lower part of shape cavity.
2. the adsorbent equipment of radioactivity inert gas γ spectrometry in nuclear facilities Airborne Effluent according to claim 1,
It is characterized by: the air inlet tube assembly further includes the flow for being mounted on to go out in the air inlet pipe to probe gas current-carrying object product
Count and be mounted on the first shut-off valve in the air inlet pipe to control the air inlet pipe opening and closing；The outlet pipe assembly is also wrapped
It includes and is mounted on the escape pipe to control the second shut-off valve and be mounted on the escape pipe that the escape pipe is opened and closed
Circulating pump.
3. the adsorbent equipment of radioactivity inert gas γ spectrometry in nuclear facilities Airborne Effluent according to claim 2,
It is characterized by: the flow is calculated as digital flow totalizer, the flowmeter is mounted on the outside of the container, described first
Shut-off valve is located at the upstream of the flowmeter.
4. the adsorbent equipment of radioactivity inert gas γ spectrometry in nuclear facilities Airborne Effluent according to claim 3,
It is characterized by: the air inlet tube assembly further includes being mounted in the air inlet pipe to filter particulate matter in Airborne Effluent
Micronic filter, the micronic filter are located at the upstream of first shut-off valve.
5. the adsorbent equipment of radioactivity inert gas γ spectrometry in nuclear facilities Airborne Effluent according to claim 4,
It is characterized by: the air inlet tube assembly further includes point being mounted in the air inlet pipe to adsorb moisture in Airborne Effluent
Son sieve column, the molecular sieve column are located at the upstream of the micronic filter.
6. the adsorbent equipment of radioactivity inert gas γ spectrometry in nuclear facilities Airborne Effluent according to claim 2,
It is characterized by: the circulating pump is located at the downstream of second shut-off valve.
7. the adsorbent equipment of radioactivity inert gas γ spectrometry in nuclear facilities Airborne Effluent according to claim 1,
It is characterized by: the top of the container is equipped with circular top cover to be opened/closed, the circular top cover is radially from the top
The top of the circular cavity is extended to above connection chamber.
8. the adsorbent equipment of radioactivity inert gas γ spectrometry in nuclear facilities Airborne Effluent according to claim 1,
It is characterized by: the air inlet pipe and the escape pipe extend to the circular appearance from the top of the circular cavity respectively
The lateral wall of the lower part of chamber, the air inlet pipe and the escape pipe close to the circular cavity.
9. the adsorbent equipment of radioactivity inert gas γ spectrometry in nuclear facilities Airborne Effluent according to claim 1,
It is characterized by: the dimensions of the cocoanut active charcoal is 10 mesh.
10. the adsorbent equipment of radioactivity inert gas γ spectrometry in nuclear facilities Airborne Effluent according to claim 9,
It is characterized by: the volume of a container is 3L, the quality for the cocoanut active charcoal filled is 1.5kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822086632.0U CN209374071U (en) | 2018-12-12 | 2018-12-12 | The adsorbent equipment of radioactivity inert gas γ spectrometry in a kind of nuclear facilities Airborne Effluent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822086632.0U CN209374071U (en) | 2018-12-12 | 2018-12-12 | The adsorbent equipment of radioactivity inert gas γ spectrometry in a kind of nuclear facilities Airborne Effluent |
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| CN209374071U true CN209374071U (en) | 2019-09-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112331372A (en) * | 2020-09-29 | 2021-02-05 | 中广核工程有限公司 | Online measuring device and method for inert gas in nuclear facility gaseous effluent |
-
2018
- 2018-12-12 CN CN201822086632.0U patent/CN209374071U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112331372A (en) * | 2020-09-29 | 2021-02-05 | 中广核工程有限公司 | Online measuring device and method for inert gas in nuclear facility gaseous effluent |
| WO2021227467A1 (en) * | 2020-09-29 | 2021-11-18 | 中广核工程有限公司 | Online measurement apparatus and method for inert gas in gaseous effluent from nuclear facility |
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