CN112924234A - Rapid sampling device and method for radioactive production drainage - Google Patents
Rapid sampling device and method for radioactive production drainage Download PDFInfo
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- CN112924234A CN112924234A CN201911236182.1A CN201911236182A CN112924234A CN 112924234 A CN112924234 A CN 112924234A CN 201911236182 A CN201911236182 A CN 201911236182A CN 112924234 A CN112924234 A CN 112924234A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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Abstract
A radioactive production drainage rapid sampling device comprises a gas-liquid separation tank, wherein the upper end of the gas-liquid separation tank is connected with an exhaust pipe, and the lower end of the exhaust pipe passes through a cover plate manhole on a raw lower cover plate and enters the lower part of the raw lower cover plate; the side surface of the gas-liquid separation tank is connected with a liquid lifting pipe, and the lower end of the liquid lifting pipe enters the water surface of the raw water pool; the device also comprises an A3 air compressing main pipe, wherein the A3 air compressing main pipe is connected with an A3 air source pipe, the middle part of the A3 air source pipe is provided with a switching hand valve, the lower end of the A3 air source pipe enters the water surface of the raw water pool through a cover plate manhole on the raw cover plate, and the part of the A3 air source pipe below the water surface is communicated with the part of the lower end of the riser pipe below the water surface; the bottom of the gas-liquid separation tank is connected with a discharge pipeline.
Description
Technical Field
The invention relates to the field of sampling devices, in particular to a rapid sampling device for radioactive production drainage.
Background
The original sampling process of the production sewage pool is realized by lifting by using a sampling bucket by personnel, and the taken water sample is loaded into a 5L plastic bucket and then sent to a five-station analysis room for analysis. Because this sampling device does not possess sample circulation function, and the degree of depth that different operators hung and get is different, leads to the lot of sample component difference of taking out big, unrepresentative. The same set of sampling device is used alternately among different water tanks, so that sample pollution is easily caused, and the analysis result is influenced. This sampling operation is carried out 5 ~ 6 times daily during hot operation, uses former sampling device frequently to cause easily that the radioactive water appearance is unrestrained to stain personnel, ground, and then leads to cross contamination between different regions, increases the burden for radiation protection and surface decontamination work.
Therefore, a sampling device which is suitable for a production sewage tank in the fields of ultralow radioactivity water tanks and nuclear fuel post-treatment, and has the advantages of strong sampling representativeness, cleanness, rapidness, simplicity in operation and long service cycle is needed to be designed.
Disclosure of Invention
The invention aims to: the sampling device and the method applied to the production of the sewage pool in the ultra-low radioactivity pool and the nuclear fuel post-treatment are developed, the sampling device is required to have the characteristics of strong sampling representativeness, simple structure, cleanness, rapidness and strong practicability, and the operation method has the characteristics of simplicity, convenience and easiness in operation.
The technical scheme of the invention is as follows: a radioactive production drainage rapid sampling device comprises a gas-liquid separation tank, wherein the upper end of the gas-liquid separation tank is connected with an exhaust pipe, and the lower end of the exhaust pipe passes through a cover plate manhole on a raw lower cover plate and enters the lower part of the raw lower cover plate; the side surface of the gas-liquid separation tank is connected with a liquid lifting pipe, and the lower end of the liquid lifting pipe enters the water surface of the raw water pool; the device also comprises an A3 air compressing main pipe, wherein the A3 air compressing main pipe is connected with an A3 air source pipe, the middle part of the A3 air source pipe is provided with a switching hand valve, the lower end of the A3 air source pipe enters the water surface of the raw water pool through a cover plate manhole on the raw cover plate, and the part of the A3 air source pipe below the water surface is communicated with the part of the lower end of the riser pipe below the water surface; the bottom of the gas-liquid separation tank is connected with a discharge pipeline.
The lower end of the exhaust pipe passes through a cover plate manhole on the lower cover plate and enters a position 300 mm below the lower cover plate.
The lower end of the riser tube enters the water surface of the raw water pool through a manhole of a cover plate on the raw water cover plate.
A method for quickly sampling sewage in radioactive production comprises the following steps:
the method comprises the following steps: opening a switching hand valve in the middle of an A3 air source pipe, enabling compressed air to enter the water surface of the raw water pool along the A3 air source pipe, and enabling air and liquid to form foam at the junction of the A3 air source pipe and the liquid lifting pipe;
step two: the foam quickly rises to a gas-liquid separation tank in a liquid lifting pipe, and the liquid is continuously supplemented into the liquid lifting pipe from a raw water pool;
step three: after the foam reaches the gas-liquid separation tank, the air is discharged along the exhaust pipe, and the liquid returns to the water pool along the discharge pipe;
step four: after the liquid has been circulated for a period of time, a sufficient amount of liquid is taken as an analytical sample.
Further comprises the following steps: and closing the switching hand valve to finish the sampling operation.
When the liquid is circulated for 10min, enough liquid is taken as an analysis sample.
A sufficient amount of liquid was taken in a 5L plastic bucket as an analysis sample.
The invention has the following remarkable effects: the experimental verification result shows that the device meets the sampling requirement of a water tank in the spent fuel post-treatment production, is simple and convenient to operate, is clean and rapid, is not easy to cause cross contamination, has the average sampling time of 12.5min, and saves one third of the time compared with the original sampling mode. The operation method is simple, and the sampling operation can be independently and quickly completed after personnel are trained for the first time. At present, the sampling technical result is successfully applied to sampling work of a water pool for radioactive production in a pilot plant, and the effect is good.
Drawings
FIG. 1 is a schematic view of a rapid sampling device for radioactive production sewage.
FIG. 2 is a schematic diagram of a gas-liquid separation tank of a device for quickly loading and sampling sewage in radioactive production.
In the figure: 1-a3 compressed air manifold; 2-an exhaust pipe; 3-a3 gas source tube; 4-a gas-liquid separation tank; 5, switching a hand valve; 6-a riser tube; 7-cover plate manhole; 8-blanking the cover plate; 9-a raw water tank; 10-a discharge line; 11-surface of water
Detailed Description
A radioactive production drainage rapid sampling device comprises a gas-liquid separation tank 4, wherein the upper end of the gas-liquid separation tank 4 is connected with an exhaust pipe 2, and the lower end of the exhaust pipe 2 passes through a cover plate manhole 7 on a lower cover plate 8 and enters a position 300 mm below the lower cover plate 8; the side surface of the gas-liquid separation tank 4 is connected with a liquid lifting pipe 6, and the lower end of the liquid lifting pipe 6 enters the water surface 11 of a raw water pool 9 through a cover plate manhole 7 on a raw cover plate 8; the device also comprises an A3 air compressing main pipe 1, wherein the A3 air compressing main pipe 1 is connected with an A3 air source pipe 3, the middle part of the A3 air source pipe 3 is provided with a switching hand valve 5, the lower end of the A3 air source pipe 3 enters the position below the water surface 11 of the raw and lower water pool 9 through a cover plate manhole 7 on a raw and lower cover plate 8, and the part of the A3 air source pipe 3 below the water surface 11 is communicated with the part of the lower end of the riser pipe 6 below the water surface 11; the bottom of the gas-liquid separation tank 4 is connected with a discharge pipeline 10.
A method for quickly sampling sewage in radioactive production comprises the following steps:
the method comprises the following steps: opening a switching hand valve 5 in the middle of an A3 air source pipe 3, leading compressed air to enter the water surface 11 of the raw water pool 9 along the A3 air source pipe 3, and forming foam at the junction of the A3 air source pipe 3 and the lift pipe 6;
step two: the foam rises to the gas-liquid separation tank 4 in the lift pipe 6, and the liquid is continuously supplemented to the lift pipe 6 from the raw water tank 9;
step three: after the foam reaches the gas-liquid separation tank 4, the air is discharged along the exhaust pipe 2, and the liquid returns to the water pool along the discharge pipe 10;
step four: after the liquid is circulated for 10min, a 5L plastic bucket is used for taking enough liquid as an analysis sample;
step five: and closing the switching hand valve 5 to finish the sampling operation.
Claims (7)
1. The utility model provides a quick sampling device of radioactive production groundwater which characterized in that: the device comprises a gas-liquid separation tank (4), wherein the upper end of the gas-liquid separation tank (4) is connected with an exhaust pipe (2), and the lower end of the exhaust pipe (2) passes through a cover plate manhole (7) on a raw lower cover plate (8) and enters the position below the raw lower cover plate (8); the side surface of the gas-liquid separation tank (4) is connected with a liquid lifting pipe (6), and the lower end of the liquid lifting pipe (6) enters the water surface (11) of the raw water tank (9); the device also comprises an A3 air compressing main pipe (1), wherein the A3 air compressing main pipe (1) is connected with an A3 air source pipe (3), a switching hand valve (5) is arranged in the middle of the A3 air source pipe (3), the lower end of the A3 air source pipe (3) enters the position below the water surface (11) of the raw water basin (9) through a cover plate manhole (7) on a raw cover plate (8), and the part of the A3 air source pipe (3) below the water surface (11) is communicated with the part of the lower end of the riser pipe (6) below the water surface (11); the bottom of the gas-liquid separation tank (4) is connected with a discharge pipeline (10).
2. The rapid sampling device for radioactive production sewer according to claim 1, characterized in that: the lower end of the exhaust pipe (2) passes through a cover plate manhole (7) on the raw lower cover plate (8) and enters a position 300 mm below the raw lower cover plate (8).
3. The rapid sampling device for radioactive production sewer according to claim 1, characterized in that: the lower end of the riser tube (6) enters the water surface (11) of the raw water basin (9) through a cover plate manhole (7) on the raw water cover plate (8).
4. A method of using the radioactive production sewer rapid sampling device of claim 3, wherein: the method comprises the following steps:
the method comprises the following steps: opening a switching hand valve (5) in the middle of an A3 air source pipe (3), enabling compressed air to enter the water surface (11) of the raw water pool (9) along the A3 air source pipe (3), and enabling air and liquid to form foam at the junction of the A3 air source pipe (3) and the riser pipe (6);
step two: the foam rapidly rises to the gas-liquid separation tank (4) in the lift pipe (6), and the liquid is continuously supplemented into the lift pipe (6) from the raw water pool (9);
step three: after the foam reaches the gas-liquid separation tank (4), air is discharged along the exhaust pipe (2), and liquid returns to the water pool along the discharge pipe (10);
step four: after the liquid has been circulated for a period of time, a sufficient amount of liquid is taken as an analytical sample.
5. The method for rapidly sampling sewage in radioactive production according to claim 1, wherein the method comprises the following steps: further comprises the following steps: and closing the switching hand valve (5) to finish the sampling operation.
6. The method for rapidly sampling sewage in radioactive production according to claim 1, wherein the method comprises the following steps: when the liquid is circulated for 10min, enough liquid is taken as an analysis sample.
7. The method for rapidly sampling sewage in radioactive production according to claim 6, wherein the method comprises the following steps: a sufficient amount of liquid was taken in a 5L plastic bucket as an analysis sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911236182.1A CN112924234A (en) | 2019-12-05 | 2019-12-05 | Rapid sampling device and method for radioactive production drainage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911236182.1A CN112924234A (en) | 2019-12-05 | 2019-12-05 | Rapid sampling device and method for radioactive production drainage |
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| Publication Number | Publication Date |
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| CN112924234A true CN112924234A (en) | 2021-06-08 |
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| CN201911236182.1A Pending CN112924234A (en) | 2019-12-05 | 2019-12-05 | Rapid sampling device and method for radioactive production drainage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199622A (en) * | 2021-11-19 | 2022-03-18 | 河北华丰能源科技发展有限公司 | Sampling device suitable for liquid internal sampling |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0296917A1 (en) * | 1987-06-12 | 1988-12-28 | Commissariat A L'energie Atomique | Device for continuously circulating a liquid in order to sample or to check this liquid |
| CN207883335U (en) * | 2017-12-27 | 2018-09-18 | 中核四0四有限公司 | A kind of high radioactivity sampling cabinet sampling bottle delivery device |
| CN209446318U (en) * | 2018-12-25 | 2019-09-27 | 河北华厚天成环保技术有限公司 | A kind of water quality on-line sampling device |
-
2019
- 2019-12-05 CN CN201911236182.1A patent/CN112924234A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0296917A1 (en) * | 1987-06-12 | 1988-12-28 | Commissariat A L'energie Atomique | Device for continuously circulating a liquid in order to sample or to check this liquid |
| CN207883335U (en) * | 2017-12-27 | 2018-09-18 | 中核四0四有限公司 | A kind of high radioactivity sampling cabinet sampling bottle delivery device |
| CN209446318U (en) * | 2018-12-25 | 2019-09-27 | 河北华厚天成环保技术有限公司 | A kind of water quality on-line sampling device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199622A (en) * | 2021-11-19 | 2022-03-18 | 河北华丰能源科技发展有限公司 | Sampling device suitable for liquid internal sampling |
| CN114199622B (en) * | 2021-11-19 | 2024-02-27 | 河北华丰能源科技发展有限公司 | Sampling device suitable for liquid internal sampling |
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Application publication date: 20210608 |
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