CN212301019U - Aerosol filter paper and iodine box installation container - Google Patents
Aerosol filter paper and iodine box installation container Download PDFInfo
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- CN212301019U CN212301019U CN202020566276.7U CN202020566276U CN212301019U CN 212301019 U CN212301019 U CN 212301019U CN 202020566276 U CN202020566276 U CN 202020566276U CN 212301019 U CN212301019 U CN 212301019U
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- filter paper
- iodine
- lower body
- sampling
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Abstract
The utility model discloses a container that is used for installing aerosol filter paper, iodine box in nuclear power plant's containment gas aerosol sample, iodine sampling process. The air flow channel distributor comprises a lower body, an air flow channel distributor, two sealing rings, an upper sealing cover, a locking buckle, an inlet connecting pipe and an outlet connecting pipe; the inner cavity of the lower body is respectively provided with a sampling iodine box, an air flow channel distributor, sampling filter paper and two sealing rings from bottom to top; the upper sealing cover and the lower body are tightly attached through the locking hasp; an inlet connecting pipe is arranged on the upper sealing cover, and an outlet connecting pipe is arranged on the lower body. By adopting the container, the sealing performance of the whole sampling loop can be improved, the leakage rate of the containment is reduced, and the difficulty of sampling operation is simplified.
Description
Technical Field
The utility model discloses a nuclear power plant's gaseous aerosol of containment sample, iodine sampling in-process are used for installing the container of aerosol filter paper, iodine box, adopt this container can promote the leakproofness in whole sample return circuit, reduce the containment leakage rate, simplify the sampling operation degree of difficulty simultaneously.
Background
During the operation of a nuclear power plant, aerosol and iodine carried by gas in a containment vessel need to be sampled and analyzed at irregular intervals, the gas in the containment vessel is extracted through a sampling pump, and the aerosol and the iodine are respectively filtered through filter paper and an iodine box and then return to the containment vessel. The radioactivity of the gas in the containment vessel was measured indirectly in the laboratory by measuring the radioactivity of the aerosol, iodine box deposited on the filter paper.
When aerosol and iodine sampling recovery is completed, the filter paper and iodine box containers adopted by the existing nuclear power plant have the defect of air leakage, so that the leakage rate of a containment vessel is high, and the integrity of a third entity barrier of nuclear safety is influenced. The body of the existing on-site product for the nuclear power plant is divided into an upper part, a middle part and a lower part, and is provided with two connecting parts. The two connecting parts are connected by threads and sealed singly, and operators manually fasten the threads to seal. The fastening torque is different and the compression amount of the sealing gasket is different under the influence of different strength differences of operators; the sealing washer receives the hoop shearing force during fastening operation, and is fragile. Therefore, the air leakage defect occurs after a plurality of operations.
Disclosure of Invention
An object of the utility model is to provide a more reasonable aerosol filter paper of structure and iodine box installation container adopt this container can promote the leakproofness in whole sample return circuit, reduce the containment leakage rate, can simplify the sampling operation simultaneously.
In order to achieve the above purpose, the utility model adopts the technical proposal that:
an aerosol filter paper and iodine box installation container comprises a lower body, an air flow channel distributor, two sealing rings, an upper sealing cover, a locking buckle, an inlet connecting pipe and an outlet connecting pipe; the inner cavity of the lower body is respectively provided with a sampling iodine box, an air flow channel distributor, sampling filter paper and two sealing rings from bottom to top; the upper sealing cover and the lower body are tightly attached through the locking hasp; an inlet connecting pipe is arranged on the upper sealing cover, and an outlet connecting pipe is arranged on the lower body.
The number of the locking hasps is 3.
The 3 locking hasps are arranged in a 120-degree annular mode.
The diameter of the inner cavity of the lower body is gradually increased from bottom to top.
The diameter of the air flow channel distributor is larger than that of the sampling iodine box.
The two sealing rings are step-shaped.
The utility model discloses the beneficial effect who gains does:
placing the sampling iodine box and the filter paper in a sampling cavity, reducing a part connecting part and a sealing fault point; the connecting part adopts double sealing, so that the sealing performance of the container can be effectively improved, and the sealing failure probability is reduced; the locking hasp mode is adopted to lock the upper sealing cover and the lower body, so that the operation is convenient; the compression amount of the two sealing gaskets is fixed and cannot change along with different operators; compared with a thread tightening mode, the sealing washer is not subjected to circumferential shearing force during the tightening operation, is not easy to damage, and further reduces the sealing failure probability.
Drawings
FIG. 1 is a front cross-sectional view of an aerosol filter paper and iodine cassette mounting container;
FIG. 2 is a top view of the aerosol filter paper and iodine cassette mounting container;
in the figure: 1. a lower body; 2. sampling an iodine box; 3. an air flow channel distributor; 4. sampling filter paper; 5. two sealing rings; 6. an upper sealing cover; 7. locking the hasp; 8. an inlet connection pipe; 9. an outlet connecting pipe.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, the aerosol filter paper and iodine box installation container of the present invention comprises a lower body 1, an air flow channel distributor 3, two sealing rings 5, an upper sealing cover 6, a locking buckle 7, an inlet connection pipe 8, and an outlet connection pipe 9; a sampling iodine box 2, an air flow channel distributor 3, sampling filter paper 4 and two sealing rings 5 are respectively arranged in the inner cavity of the lower body 1 from bottom to top; the upper sealing cover 6 and the lower body 1 are tightly jointed by 3 locking hasps 7 which are mutually arranged in an annular shape at 120 degrees, so that the sealing performance of the container is ensured. An inlet connecting pipe 8 is arranged on the upper sealing cover 6, and an outlet connecting pipe 9 is arranged on the lower body 1.
Wherein: the lowest part is an installation space of the sampling iodine box 2, the size of the installation space is customized according to the size of the sampling iodine box 2, and the diameter of the installation space of each part is gradually increased from bottom to top; the diameter of the air flow channel distributor 3 is slightly larger than that of the sampling iodine box 2, and the air flow channel distributor has double functions of air flow channel distribution and sampling filter paper support.
The iodine box and the aerosol filter paper are arranged in the same sampling cavity (the inner cavity of the lower body).
The mounting container has only one connecting portion.
Step-shaped two sealing surfaces are designed at the connecting part of the installation container, and double sealing is adopted.
The specific use flow is as follows:
installing a sampling iodine box and sampling filter paper: opening 3 buckles of the locking hasp to separate the upper sealing cover from the lower body; turning over the lower body, and taking out the air flow channel distributor by using gravity; an iodine box, an air flow channel distributor and filter paper are sequentially arranged; and recovering the upper sealing cover, and locking the hasp buckle to ensure that the upper sealing cover is tightly attached and connected with the lower body.
Taking out the sampling iodine box and sampling filter paper samples: opening 3 buckles of the locking hasp to separate the upper sealing cover from the lower body; taking out the filter paper sample; turning over the lower body, and taking out the air flow channel distributor by using gravity; turning over the lower body, and taking out the iodine box sample by using gravity; restoring to place the air flow channel distributor; and recovering the upper sealing cover, and locking the hasp buckle to ensure that the upper sealing cover is tightly attached and connected with the lower body.
Claims (6)
1. An aerosol filter paper and iodine box installation container which is characterized in that: the air flow channel distributor comprises a lower body, an air flow channel distributor, two sealing rings, an upper sealing cover, a locking buckle, an inlet connecting pipe and an outlet connecting pipe; the inner cavity of the lower body is respectively provided with a sampling iodine box, an air flow channel distributor, sampling filter paper and two sealing rings from bottom to top; the upper sealing cover and the lower body are tightly attached through the locking hasp; an inlet connecting pipe is arranged on the upper sealing cover, and an outlet connecting pipe is arranged on the lower body.
2. The aerosol filter paper and iodine cassette mounting container of claim 1, wherein: the number of the locking hasps is 3.
3. The aerosol filter paper and iodine cassette mounting container of claim 2, wherein: the 3 locking hasps are arranged in a 120-degree annular mode.
4. The aerosol filter paper and iodine cassette mounting container of claim 1, wherein: the diameter of the inner cavity of the lower body is gradually increased from bottom to top.
5. The aerosol filter paper and iodine cassette mounting container of claim 1, wherein: the diameter of the air flow channel distributor is larger than that of the sampling iodine box.
6. The aerosol filter paper and iodine cassette mounting container of claim 1, wherein: the two sealing rings are step-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020566276.7U CN212301019U (en) | 2020-04-16 | 2020-04-16 | Aerosol filter paper and iodine box installation container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020566276.7U CN212301019U (en) | 2020-04-16 | 2020-04-16 | Aerosol filter paper and iodine box installation container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212301019U true CN212301019U (en) | 2021-01-05 |
Family
ID=73973668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020566276.7U Active CN212301019U (en) | 2020-04-16 | 2020-04-16 | Aerosol filter paper and iodine box installation container |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212301019U (en) |
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2020
- 2020-04-16 CN CN202020566276.7U patent/CN212301019U/en active Active
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