CN104502150A - Radioactive liquid sample sampling device and radioactive liquid sample sampling method for nuclear power station - Google Patents
Radioactive liquid sample sampling device and radioactive liquid sample sampling method for nuclear power station Download PDFInfo
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- CN104502150A CN104502150A CN201410782217.2A CN201410782217A CN104502150A CN 104502150 A CN104502150 A CN 104502150A CN 201410782217 A CN201410782217 A CN 201410782217A CN 104502150 A CN104502150 A CN 104502150A
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Abstract
The invention relates to a radioactive liquid sample sampling device and a radioactive liquid sample sampling method for a nuclear power station. The sampling device comprises a sampling cylinder, a large piston, a small piston, a sample bottle and a sampling needle. The sampling device is characterized in that the large piston is arranged in the sampling cylinder, the small piston is arranged in the large piston, the sampling needle is arranged on the tail end of the large piston, an annular quantifying chamber is formed between the small piston and the large piston, the annular quantifying chamber is respectively connected with a sample inlet and a cleaning opening, the sample inlet is respectively connected with a vacuumizing device and a sample source, and the cleaning opening is connected with a cleaning device. The sampling method comprises the following steps: propelling the large piston, and driving the sampling needle to pierce the sample bottle; withdrawing the small piston; vacuumizing the sample bottle; ensuring a sample to enter the annular quantifying chamber; propelling the small piston, and injecting the sample into the sample bottle; withdrawing the small piston; cleaning; withdrawing the large piston; and withdrawing the sampling needle from the sample bottle. The radioactive liquid sample sampling device is simple in structure, safe to use, sampling-and-fetching, stable and appropriate in sampling amount and capable of being remotely operated.
Description
Technical field
The present invention relates to a kind of sampler and sampling method, specifically used in nuclear power station radioactive liquid sample sampler and sampling method.
Background technology
Nuclear power station will sample the nuclear activity liquid in process pipe or container in running often, in order to analyze hydrochemical characteristics parameter and the radioactivity of sample, then according to analysis result, judge the normality of process system and equipment work, if occur abnormal, then determine rational disposal route.Because sampling is to liking with radioactive liquid, there is high risk, for avoiding impacting personnel and environment, the sampling amount of sample is necessary little and accurate.
At present, adopt and manually sample, have certain nuclear radiation to operating personnel.In addition, sampling jar needed first to vacuumize before for sampling, from having taken out vacuum in sampling during this period of time, vacuum tightness can decline gradually, and sample power by sample source pressure and the acting in conjunction of sampling jar vacuum tightness and ensure, under the various factors such as manual operation time, sample source pressure and sample bottle vacuum tightness, sample volume extremely unstable and generally on the high side.Like this, not only increase operating personnel's radioactive radiation dangerous, also increase the processing cost of waste liquid.Therefore, design that a kind of structure is simple, use safety, namely take out namely get, sampling amount suitably stable and can remote-operated radioactive liquid sample sampler and sampling method very necessary.
Summary of the invention
The object of this invention is to provide that a kind of structure is simple, use safety, namely take out namely get, sampling amount is suitably stable and can remote-operated radioactive liquid sample sampler and sampling method.
For achieving the above object, the invention provides used in nuclear power station radioactive liquid sample sampler, comprise sampling cylinder barrel, large piston, valve piston, large piston advances T-valve, large piston returns T-valve, valve piston advances T-valve, valve piston returns T-valve, sample bottle and sampling probe, it is characterized in that large piston is positioned at sampling cylinder barrel, valve piston is positioned at large piston, sampling probe is arranged at the end of large piston, sampling cylinder barrel is provided with and advances large piston intake mouth, return large piston intake mouth, advance valve piston air intake opening, return valve piston air intake opening, sample inlet and rinse mouth, large piston is provided with valve piston and advances inlet channel, valve piston returns inlet channel, sample channel, wash-down water passage and one-way flow assembly, valve piston advances the two ends of inlet channel to be connected with propelling valve piston air intake opening and valve piston top chamber respectively, valve piston return inlet channel two ends respectively with return valve piston air intake opening and valve piston bottom chamber is connected, valve piston offers ring groove, annular quantitatively chamber is formed by described ring groove between valve piston and large piston, ring groove is connected with sample inlet and rinse mouth with wash-down water passage respectively by sample channel, sample inlet is connected with vacuum extractor and sample source respectively by pipeline, rinse mouth is connected with flusher, large piston intake mouth and large piston is advanced to advance the road junction of often opening of T-valve to be connected, large piston advances the switching channel mouth of T-valve to be connected with compressed gas source, large piston advances the normally closed passway of T-valve to be connected with air, return large piston intake mouth to be connected with the road junction of often opening that large piston returns T-valve, the switching channel mouth that large piston returns T-valve is connected with compressed gas source, the normally closed passway that large piston returns T-valve is connected with air, valve piston air intake opening is advanced to advance the road junction of often opening of T-valve to be connected with valve piston, valve piston advances the switching channel mouth of T-valve to be connected with compressed gas source, valve piston advances the normally closed passway of T-valve to be connected with air, return valve piston air intake opening to be connected with the road junction of often opening that valve piston returns T-valve, the switching channel mouth that valve piston returns T-valve is connected with compressed gas source, the normally closed passway that valve piston returns T-valve is connected with air.
Further, described propelling large piston intake mouth, return large piston intake mouth, advance valve piston air intake opening, return valve piston air intake opening, sample inlet and rinse mouth and be hickey.
Further, described sampling probe is single needle structure.
Further, described large piston advances T-valve, and large piston returns T-valve, and valve piston advances T-valve and valve piston to return T-valve and is air operated reversing valve.
Present invention also offers and a kind ofly use above-mentioned used in nuclear power station radioactive liquid sample sampler to carry out the method sampled, comprise the following steps:
A. large piston is regulated to advance T-valve, making it often open, road junction is communicated with switching channel mouth and normally closed passway is closed, large piston is regulated to return T-valve, make it often open obstructed and normally closed passway between road junction and switching channel mouth to open, advance large piston, drive the sampling probe be connected with large piston to lunge in the sample bottle being with rubber plug;
B. regulate valve piston to advance T-valve, make it often open obstructed and normally closed passway between road junction and switching channel mouth and open, regulate valve piston to return T-valve, making it often open, road junction is communicated with switching channel mouth and normally closed passway is closed, and returns valve piston;
C. open vacuum extractor, sample bottle is vacuumized;
D., when the vacuum tightness of sampling jar reaches-0.05MPa, vacuum extractor is closed;
E. open sample source pipeline, allow sample enter the quantitative chamber of annular formed by described ring groove between valve piston and large piston;
F. valve piston is regulated to advance T-valve, making it often open, road junction is communicated with switching channel mouth and normally closed passway is closed, valve piston is regulated to return T-valve, make it often open obstructed and normally closed passway between road junction and switching channel mouth to open, advance valve piston, the sample of quantitative for annular chamber is injected sample bottle;
G. regulate valve piston to advance T-valve, make it often open obstructed and normally closed passway between road junction and switching channel mouth and open, regulate valve piston to return T-valve, making it often open, road junction is communicated with switching channel mouth and normally closed passway is closed, and returns valve piston;
H. open clean-up line, rinse;
I. rinse after 30 seconds, close clean-up line;
J. large piston is regulated to advance T-valve, make it often open obstructed and normally closed passway between road junction and switching channel mouth to open, large piston is regulated to return T-valve, making it often open, road junction is communicated with switching channel mouth and normally closed passway is closed, return large piston, extract sampling probe out sample bottle, sampler resets.
The present invention adopts the annular quantitative chamber formed by described ring groove between valve piston and large piston sample, and adopt namely take out namely get-sample bottle is vacuumized and samples the mode of carrying out continuously, effectively ensure that sampling amount is stable suitable.Structure of the present invention is simple, use safety and can operated from a distance.The present invention can repeatedly utilize.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1-samples cylinder barrel; 1.1-advances large piston intake mouth; 1.2-returns large piston intake mouth; 1.3-advances valve piston air intake opening; 1.4-returns valve piston air intake opening; 1.5-sample inlet; 1.6-rinse mouth; The large piston of 2-; 2.1-valve piston advances inlet channel; 2.2-valve piston returns inlet channel; 2.3-sample channel; 2.4-wash-down water passage; 2.5-one-way flow assembly; 3-valve piston; 3.1-ring groove; The large piston of 4-advances T-valve; The large piston of 4.1-advances T-valve switching channel mouth; The large piston of 4.2-advances T-valve often to open road junction; The large piston of 4.3-advances the normally closed passway of T-valve; 5-is large, and piston returns T-valve; The large piston of 5.1-returns T-valve switching channel mouth; The large piston of 5.2-is return T-valve and is often opened road junction; The large piston of 5.3-returns the normally closed passway of T-valve; 6-valve piston advances T-valve; 6.1-valve piston advances T-valve switching channel mouth; 6.2-valve piston advances T-valve often to open road junction; 6.3-valve piston advances the normally closed passway of T-valve; 7-valve piston returns T-valve; 7.1-valve piston returns T-valve switching channel mouth; 7.2-valve piston is return T-valve and is often opened road junction; 7.3-valve piston returns the normally closed passway of T-valve; 8-sample bottle; 9-sampling probe; 10-compressed gas source; 11-vacuum extractor; 12-sample source; 13-flusher.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated, but this embodiment should not be construed as limitation of the present invention.
The radioactive liquid of used in nuclear power station shown in figure sample sampler, comprise sampling cylinder barrel 1, large piston 2, valve piston 3, large piston advances T-valve 4, large piston returns T-valve 5, valve piston advances T-valve 6, valve piston returns T-valve 7, sample bottle 8 and sampling probe 9, large piston 2 is positioned at sampling cylinder barrel 1, valve piston 3 is positioned at large piston 2, sampling probe 9 is arranged at the end of large piston 2, sampling cylinder barrel 1 is provided with and advances large piston intake mouth 1.1, return large piston intake mouth 1.2, advance valve piston air intake opening 1.3, return valve piston air intake opening 1.4, sample inlet 1.5 and rinse mouth 1.6, large piston 2 is provided with valve piston and advances inlet channel 2.1, valve piston returns inlet channel 2.2, sample channel 2.3, wash-down water passage 2.4 and one-way flow assembly 2.5, valve piston advances the two ends of inlet channel 2.1 to be connected with propelling valve piston air intake opening 1.3 and valve piston top chamber respectively, valve piston return inlet channel 2.2 two ends respectively with return valve piston air intake opening 1.4 and valve piston bottom chamber is connected, valve piston 3 offers ring groove 3.1, annular quantitatively chamber is formed by described ring groove 3.1 between valve piston 3 and large piston 2, ring groove 3.1 is connected with sample inlet 1.5 and rinse mouth 1.6 with wash-down water passage 2.4 respectively by sample channel 2.3, sample inlet 1.5 is connected with vacuum extractor 11 and sample source 12 respectively by pipeline, rinse mouth 1.6 is connected with flusher 13, large piston intake mouth 1.1 and large piston is advanced to advance the road junction 4.2 of often opening of T-valve 4 to be connected, large piston advances the switching channel mouth 4.1 of T-valve 4 to be connected with compressed gas source 10, large piston advances the normally closed passway 4.3 of T-valve 4 to be connected with air, return large piston intake mouth 1.2 to be connected with the road junction 5.2 of often opening that large piston returns T-valve 5, the switching channel mouth 5.1 that large piston returns T-valve 5 is connected with compressed gas source 10, the normally closed passway 5.3 that large piston returns T-valve 5 is connected with air, valve piston air intake opening 1.3 is advanced to advance the road junction 6.2 of often opening of T-valve 6 to be connected with valve piston, valve piston advances the switching channel mouth 6.1 of T-valve 6 to be connected with compressed gas source 10, valve piston advances the normally closed passway 6.3 of T-valve 6 to be connected with air, return valve piston air intake opening 1.4 to be connected with the road junction 7.2 of often opening that valve piston returns T-valve 7, the switching channel mouth 7.1 that valve piston returns T-valve 7 is connected with compressed gas source 10, the normally closed passway 7.3 that valve piston returns T-valve 7 is connected with air.
Preferred example is: in such scheme, described propelling large piston intake mouth 1.1, returns large piston intake mouth 1.2, advances valve piston air intake opening 1.3, returns valve piston air intake opening 1.4, sample inlet 1.5 and rinse mouth 1.6 and be hickey.
Preferred example is: in such scheme, and described sampling probe 9 is single needle structure.
Preferred example is: in such scheme, and described large piston advances T-valve 4, large piston returns T-valve 5, valve piston advances T-valve 6 and valve piston to return T-valve (7) to be air operated reversing valve.
Use above-mentioned used in nuclear power station radioactive liquid sample sampler to carry out the method sampled, comprise the following steps:
A. large piston is regulated to advance T-valve 4, making it often open, road junction 4.2 is communicated with switching channel mouth 4.1 and normally closed passway 4.3 is closed, large piston is regulated to return T-valve 5, make it often open obstructed and normally closed passway 5.3 between road junction 5.2 and switching channel mouth 5.1 to open, advance large piston 2, drive the sampling probe 9 be connected with large piston 2 to lunge and be with in the sample bottle 8 of rubber plug;
B. valve piston is regulated to advance T-valve 6, make it often open obstructed and normally closed passway 6.3 between road junction 6.2 and switching channel mouth 6.1 to open, regulate valve piston to return T-valve 7, making it often open, road junction 7.2 is communicated with switching channel mouth 7.1 and normally closed passway 7.3 is closed, and returns valve piston 3;
C. open vacuum extractor, sample bottle 8 is vacuumized;
D., when the vacuum tightness of sampling jar reaches-0.05MPa, vacuum extractor is closed;
E. open sample source pipeline, allow sample enter the quantitative chamber of annular formed by described ring groove 3.1 between valve piston 3 and large piston 2;
F. valve piston is regulated to advance T-valve 6, making it often open, road junction 6.2 is communicated with switching channel mouth 6.1 and normally closed passway 6.3 is closed, valve piston is regulated to return T-valve 7, make it often open obstructed and normally closed passway 7.3 between road junction 7.2 and switching channel mouth 7.1 to open, advance valve piston 3, the sample of quantitative for annular chamber is injected sample bottle 8;
G. valve piston is regulated to advance T-valve 6, make it often open obstructed and normally closed passway 6.3 between road junction 6.2 and switching channel mouth 6.1 to open, regulate valve piston to return T-valve 7, making it often open, road junction 7.2 is communicated with switching channel mouth 7.1 and normally closed passway 7.3 is closed, and returns valve piston 3;
H. open clean-up line, rinse;
I. rinse after 30 seconds, close clean-up line;
J. large piston is regulated to advance T-valve 4, make it often open obstructed and normally closed passway 4.3 between road junction 4.2 and switching channel mouth 4.1 to open, large piston is regulated to return T-valve 5, making it often open, road junction 5.2 is communicated with switching channel mouth 5.1 and normally closed passway 5.3 is closed, return large piston 2, extract sampling probe 9 out sample bottle 8, sampler resets.
The content be not described in detail in this instructions, belongs to the known prior art of those skilled in the art.
Claims (5)
1. used in nuclear power station radioactive liquid sample sampler, comprise sampling cylinder barrel (1), large piston (2), valve piston (3), large piston advances T-valve (4), large piston returns T-valve (5), valve piston advances T-valve (6), valve piston returns T-valve (7), sample bottle (8) and sampling probe (9), it is characterized in that: large piston (2) is positioned at sampling cylinder barrel (1), valve piston (3) is positioned at large piston (2), sampling probe (9) is arranged at the end of large piston (2), sampling cylinder barrel (1) is provided with and advances large piston intake mouth (1.1), return large piston intake mouth (1.2), advance valve piston air intake opening (1.3), return valve piston air intake opening (1.4), sample inlet (1.5) and rinse mouth (1.6), large piston (2) is provided with valve piston and advances inlet channel (2.1), valve piston returns inlet channel (2.2), sample channel (2.3), wash-down water passage (2.4) and one-way flow assembly (2.5), valve piston advances the two ends of inlet channel (2.1) to be connected with propelling valve piston air intake opening (1.3) and valve piston top chamber respectively, valve piston return inlet channel (2.2) two ends respectively with return valve piston air intake opening (1.4) and valve piston bottom chamber is connected, valve piston (3) offers ring groove (3.1), annular quantitatively chamber is formed by described ring groove (3.1) between valve piston (3) and large piston (2), ring groove (3.1) is connected with sample inlet (1.5) and rinse mouth (1.6) with wash-down water passage (2.4) respectively by sample channel (2.3), sample inlet (1.5) is connected with vacuum extractor (11) and sample source (12) respectively by pipeline, rinse mouth (1.6) is connected with flusher (13), large piston intake mouth (1.1) and large piston is advanced to advance the road junction (4.2) of often opening of T-valve (4) to be connected, large piston advances the switching channel mouth (4.1) of T-valve (4) to be connected with compressed gas source (10), large piston advances the normally closed passway (4.3) of T-valve (4) to be connected with air, return large piston intake mouth (1.2) to be connected with the road junction (5.2) of often opening that large piston returns T-valve (5), the switching channel mouth (5.1) that large piston returns T-valve (5) is connected with compressed gas source (10), the normally closed passway (5.3) that large piston returns T-valve (5) is connected with air, valve piston air intake opening (1.3) is advanced to advance the road junction (6.2) of often opening of T-valve (6) to be connected with valve piston, valve piston advances the switching channel mouth (6.1) of T-valve (6) to be connected with compressed gas source (10), valve piston advances the normally closed passway (6.3) of T-valve (6) to be connected with air, return valve piston air intake opening (1.4) to be connected with the road junction (7.2) of often opening that valve piston returns T-valve (7), the switching channel mouth (7.1) that valve piston returns T-valve (7) is connected with compressed gas source (10), the normally closed passway (7.3) that valve piston returns T-valve (7) is connected with air.
2. used in nuclear power station radioactive liquid sample sampler according to claim 1, is characterized in that: described propelling large piston intake mouth (1.1), return large piston intake mouth (1.2), advance valve piston air intake opening (1.3), return valve piston air intake opening (1.4), sample inlet (1.5) and rinse mouth (1.6) and be hickey.
3. used in nuclear power station radioactive liquid sample sampler according to claim 1 and 2, is characterized in that: described sampling probe (9) is single needle structure.
4. used in nuclear power station radioactive liquid sample sampler according to claim 3, it is characterized in that: described large piston advances T-valve (4), large piston returns T-valve (5), and valve piston advances T-valve (6) and valve piston to return T-valve (7) and is air operated reversing valve.
5. use the used in nuclear power station radioactive liquid sample sampler described in claim 1-4 to carry out the method sampled, comprise the following steps:
A. large piston is regulated to advance T-valve (4), making it often open, road junction (4.2) is communicated with switching channel mouth (4.1) and normally closed passway (4.3) are closed, large piston is regulated to return T-valve (5), make it often open obstructed and normally closed passway (5.3) between road junction (5.2) and switching channel mouth (5.1) to open, advance large piston (2), drive the sampling probe (9) be connected with large piston (2) to lunge in the sample bottle (8) being with rubber plug;
B. valve piston is regulated to advance T-valve (6), make it often open obstructed and normally closed passway (6.3) between road junction (6.2) and switching channel mouth (6.1) to open, valve piston is regulated to return T-valve (7), making it often open, road junction (7.2) is communicated with switching channel mouth (7.1) and normally closed passway (7.3) are closed, and returns valve piston (3);
C. open vacuum extractor, sample bottle (8) is vacuumized;
D., when the vacuum tightness of sampling jar reaches-0.05MPa, vacuum extractor is closed;
E. open sample source pipeline, allow sample enter between valve piston (3) and large piston (2) by the quantitative chamber of annular that described ring groove (3.1) is formed;
F. valve piston is regulated to advance T-valve (6), making it often open, road junction (6.2) is communicated with switching channel mouth (6.1) and normally closed passway (6.3) are closed, valve piston is regulated to return T-valve (7), make it often open obstructed and normally closed passway (7.3) between road junction (7.2) and switching channel mouth (7.1) to open, advance valve piston (3), the sample of quantitative for annular chamber is injected sample bottle (8);
G. valve piston is regulated to advance T-valve (6), make it often open obstructed and normally closed passway (6.3) between road junction (6.2) and switching channel mouth (6.1) to open, valve piston is regulated to return T-valve (7), making it often open, road junction (7.2) is communicated with switching channel mouth (7.1) and normally closed passway (7.3) are closed, and returns valve piston (3);
H. open clean-up line, rinse;
I. rinse after 30 seconds, close clean-up line;
J. large piston is regulated to advance T-valve (4), make it often open obstructed and normally closed passway (4.3) between road junction (4.2) and switching channel mouth (4.1) to open, large piston is regulated to return T-valve (5), making it often open, road junction (5.2) is communicated with switching channel mouth (5.1) and normally closed passway (5.3) are closed, return large piston (2), extract sampling probe (9) out sample bottle (8), sampler resets.
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| CN105547746A (en) * | 2015-12-14 | 2016-05-04 | 中广核工程有限公司 | Nuclear power plant radioactive fluid waste online sampling device and method |
| CN108225829A (en) * | 2016-12-14 | 2018-06-29 | 中核四0四有限公司 | A kind of remote instantaneous sample device and method of mixer-settler material liquid outlet |
| CN109141976A (en) * | 2018-09-06 | 2019-01-04 | 中国原子能科学研究院 | A kind of radioactive liquid sample sampler and sampling method |
| CN109425501A (en) * | 2017-08-24 | 2019-03-05 | 中广核工程有限公司 | Nuclear power station liquid sampling integration of equipments design method and its equipment |
| CN111624041A (en) * | 2020-06-10 | 2020-09-04 | 福州格摩图电子科技有限公司 | Sampling device for radiation leakage sea area environment detection |
| CN115839868A (en) * | 2022-10-27 | 2023-03-24 | 山东冽泉环保工程咨询有限公司 | Anti-cleaning head matched with targeted sampling device |
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| CN105547746A (en) * | 2015-12-14 | 2016-05-04 | 中广核工程有限公司 | Nuclear power plant radioactive fluid waste online sampling device and method |
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| CN109425501A (en) * | 2017-08-24 | 2019-03-05 | 中广核工程有限公司 | Nuclear power station liquid sampling integration of equipments design method and its equipment |
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| CN111624041A (en) * | 2020-06-10 | 2020-09-04 | 福州格摩图电子科技有限公司 | Sampling device for radiation leakage sea area environment detection |
| CN115839868A (en) * | 2022-10-27 | 2023-03-24 | 山东冽泉环保工程咨询有限公司 | Anti-cleaning head matched with targeted sampling device |
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