CN102128871A - Flowing adding sodium analyzer checking method and device - Google Patents
Flowing adding sodium analyzer checking method and device Download PDFInfo
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- CN102128871A CN102128871A CN2010105635243A CN201010563524A CN102128871A CN 102128871 A CN102128871 A CN 102128871A CN 2010105635243 A CN2010105635243 A CN 2010105635243A CN 201010563524 A CN201010563524 A CN 201010563524A CN 102128871 A CN102128871 A CN 102128871A
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Abstract
The invention discloses a flowing adding sodium analyzer checking method and a flowing adding sodium analyzer checking device. The device comprises a desalting device connected with a water sample, a valve, a flow meter and a checked sodium analyzer; and a trace flow meter, a liquid delivery device, a sodium standard solution valve and a sodium standard solution water tank which are intercommunicated are connected in parallel on a pipeline between the flow meter and the checked sodium analyzer. High-concentration sodium standard solution is continuously added into water flow with extremely low sodium concentration. The dilution ratio of the water sample can be calculated by accurately metering the flow of the water sample and the adding flow of the high-concentration sodium standard solution, so that the sodium concentration increment of the low-concentration sodium standard water sample is calculated. Compared with the conventional high-concentration sodium standard solution static checking method, the sodium standard water sample of any concentration in a range of 1 to 10mug/L can be produced, so the standard water sample with the same or similar concentration as the concentration measured by an online sodium analyzer can be provided, and the accuracy and the reliability of the online sodium analyzer measurement value are greatly improved after the online sodium analyzer is checked and calibrated.
Description
Technical field
The present invention relates to a kind of online sodium table method of inspection and device, particularly a kind of mobile adding formula online sodium table method of inspection and device.
Background technology
The conventional online sodium table method of inspection is to adopt sodium standard solution static check method both at home and abroad at present.
The subject matter that sodium standard solution static check method exists is: owing to the pollution of dust in the air, the reasons such as pollution of container, and preparation low concentration sodium standard solution (concentration of a few μ g/L), its uncertainty is bigger; And during static check, the potassium ion that contrast electrode oozes out can disturb measuring to produce, and the sodion that the glass electrode dissolving produces also can disturb measuring to produce.Therefore, the concentration of the sodium standard solution of sodium standard solution static check method use is generally hundreds of to thousands of μ g/L.And in the generating plant water-steam system, the na concn during actual measurement is generally less than 5 μ g/L.Because slope in the demarcation of sodium at high concentration standard solution, extend to low concentration and use, the slight error that slope is demarcated can be exaggerated, and the sodium electrode is when measuring the low concentration sodium solution simultaneously, the electrode response slope can change, and causes error bigger when measuring low concentration sodium.Be that sodium standard solution static check method is demarcated and checked sodium table accurately, might not guarantee the accuracy of online sodium table measurement low concentration sodium.
Summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned prior art, provide a kind of and can improve online sodium table measurement accuracy and reliability, be more suitable for the mobile adding formula sodium table method of inspection and the device checking at the scene and demarcate.
For achieving the above object, verifying attachment of the present invention comprises: comprise the demineralizer that is connected with water sample, water sample behind the demineralizer desalination again through valve, flowmeter, be connected with tested sodium epiphase by pipeline, and the pipeline between flowmeter and tested sodium table also is parallel with micro-flowmeter, liquid transporting apparatus, sodium titer valve and the sodium standard solution water tank that is interconnected.
The water sample inlet valve also is installed on the pipeline between water sample of the present invention and the demineralizer; Liquid transporting apparatus adopts micro-dosing pump, gaseous tension to carry or liquid level difference is carried.
The mobile adding formula sodium table method of inspection of the present invention is as follows:
1) water sample passes through water sample inlet valve and demineralizer successively, and Na ion concentration is reduced to less than 0.3 μ g/L in the water sample, and again through flowmeter and tested sodium table, the Na ion concentration of being measured the low concentration water sample by tested sodium table is C
D(μ g/L), the flow of flowmeter survey low concentration water sample is Q
D(ml/min);
2) after the na concn and flow of low concentration of water sample finished in measurement, open sodium titer valve and liquid transporting apparatus, water sample in the sodium standard solution water tank mixed with the low concentration water sample through micro-flowmeter obtain low concentration sodium standard water sample, low concentration sodium standard water sample enters tested sodium table, and the flow of trace stream flowmeter measurement is Q
W(ml/min), the concentration of sodium standard solution is C
B(μ g/L) works as Q
DMuch larger than Q
WThe time, the na concn increment Delta C of low concentration sodium standard water sample is calculated as follows:
The standard water sample that produces is sent in the sensor of tested sodium table, tested table is tested or demarcated.
The present invention joins the sodium at high concentration standard solution in the extremely low current of na concn continuously.Can calculate the dilution ratio of water sample by the flow of accurate metering water sample and the flow of sodium at high concentration standard solution adding, thereby calculate the na concn increment of low concentration sodium standard water sample.Compare with existing sodium at high concentration standard solution static check method, can produce the sodium standard water sample of any concentration in 1 μ g/L～10 μ g/L scopes, therefore can provide and the identical or close standard water sample of the measured concentration of online sodium table, after so online sodium table being tested and demarcating, the accuracy and the reliability of online sodium table measured value improve greatly.Avoided slope in the demarcation of sodium at high concentration standard solution, extend to low concentration and use, the slight error that slope is demarcated can be exaggerated, and the sodium electrode is when measuring the low concentration sodium solution simultaneously, the electrode response slope can change, and causes error bigger when measuring low concentration sodium.The present invention is more suitable for checking at the scene and demarcates online sodium table.Test findings shows that in 1 μ g/L～10 μ g/L concentration ranges, the error of the sodium standard water sample that the present invention produces is less than 2.0%FS.
Description of drawings
Fig. 1 is an one-piece construction synoptic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
Referring to Fig. 1, the inventive system comprises the pipeline that has water sample inlet valve 1 that is connected with water sample, water sample behind demineralizer 2 desalinations again through valve 3, flowmeter 4, be connected with tested sodium table 9 by pipeline, and the pipeline between flowmeter 4 and tested sodium table 9 also is parallel with micro-flowmeter 8, liquid transporting apparatus 7, sodium titer valve 6 and the sodium standard solution water tank 5 that is interconnected.
Principle of the present invention is: water sample enters into demineralizer 2 through water sample inlet valve 1, demineralizer 2 is reduced to the Na ion concentration in the water sample less than 0.3 μ g/L, flowing through enters tested sodium table 9 behind the flowmeter 4 again, and the Na ion concentration of being measured the low concentration water sample by tested sodium table 9 is C
D(μ g/L), the flow that flowmeter 4 is measured the low concentration water sample is Q
D(ml/min);
After the na concn of low concentration water sample and flow measurement finished, open sodium titer valve 6 and liquid transporting apparatus 7, water sample in the sodium at high concentration standard solution water tank 5 mixed with the low concentration water sample through micro-flowmeter 8 obtain low concentration sodium standard water sample, low concentration sodium standard water sample enters tested sodium table 9, and the flow that micro-flowmeter 8 is measured is Q
W(ml/min), the concentration of sodium standard solution is C
B(μ g/L) works as Q
DMuch larger than Q
WThe time, the na concn increment Delta C of low concentration sodium standard water sample is calculated as follows:
The standard water sample that produces is sent in the sensor of tested sodium table, tested table is tested or demarcated.
The sodium at high concentration standard solution that the present invention uses, process for preparation is subjected to the pollution of koniology, container impurity etc. less relatively, and accuracy is higher; Producing the process of low concentration sodium standard solution, is to carry out under continuous flow, the air-tight state, can not be subjected to the pollution of koniology, container impurity etc., and the low concentration sodium standard solution accuracy of generation is higher.
Claims (4)
1. mobile adding formula sodium table verifying attachment, it is characterized in that: comprise the demineralizer (2) that is connected with water sample, water sample is connected with tested sodium table (9) by pipeline through valve (3), flowmeter (4) behind demineralizer (2) desalination again, and the pipeline between flowmeter (4) and tested sodium table (9) also is parallel with micro-flowmeter (8), liquid transporting apparatus (7), sodium titer valve (6) and the sodium standard solution water tank (5) that is interconnected.
2. mobile adding formula sodium table verifying attachment according to claim 1 is characterized in that: water sample inlet valve (1) also is installed on the pipeline between described water sample and the demineralizer (2).
3. mobile adding formula sodium table verifying attachment according to claim 1 is characterized in that: described liquid transporting apparatus (7) adopts micro-dosing pump, gaseous tension to carry or liquid level difference is carried.
4. method of inspection according to the described mobile adding formula sodium table verifying attachment of claim 1 is characterized in that:
1) water sample passes through water sample inlet valve (1) and demineralizer (2) successively, and Na ion concentration is reduced to less than 0.3 μ g/L in the water sample, and again through flowmeter (4) and tested sodium table (9), the Na ion concentration of being measured the low concentration water sample by tested sodium table (9) is C
D(μ g/L), the flow that flowmeter (4) is measured the low concentration water sample is Q
D(ml/min);
2) after the na concn and flow of low concentration of water sample finished in measurement, open sodium titer valve (6) and liquid transporting apparatus (7), water sample in the sodium standard solution water tank (5) mixed with the low concentration water sample through micro-flowmeter (8) obtain low concentration sodium standard water sample, low concentration sodium standard water sample enters tested sodium table (9), and the flow that micro-flowmeter (8) is measured is Q
W(ml/min), the concentration of sodium standard solution is C
B(μ g/L) works as Q
DMuch larger than Q
WThe time, the na concn increment Delta C of low concentration sodium standard water sample is calculated as follows:
The standard water sample that produces is sent in the sensor of tested sodium table, tested table is tested or demarcated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105635243A CN102128871A (en) | 2010-11-29 | 2010-11-29 | Flowing adding sodium analyzer checking method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105635243A CN102128871A (en) | 2010-11-29 | 2010-11-29 | Flowing adding sodium analyzer checking method and device |
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| CN102128871A true CN102128871A (en) | 2011-07-20 |
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| CN2010105635243A Pending CN102128871A (en) | 2010-11-29 | 2010-11-29 | Flowing adding sodium analyzer checking method and device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865114A (en) * | 2015-05-25 | 2015-08-26 | 南京华天科技发展有限公司 | Preparation method of standard sodium solution |
| CN105807000A (en) * | 2016-03-17 | 2016-07-27 | 山东电力研究院 | Online chemical instrument standard calibration device and method |
| CN110232980A (en) * | 2019-07-09 | 2019-09-13 | 阳江核电有限公司 | Sampler and online boron table calibration system for the online boron table calibration of nuclear power plant |
| CN112816531A (en) * | 2021-02-25 | 2021-05-18 | 大唐秦岭发电有限公司 | Device and method for online measurement of sodium content in ammonia water |
| CN113030226A (en) * | 2021-03-30 | 2021-06-25 | 大唐秦岭发电有限公司 | Online sodium meter calibration method |
| CN113295486A (en) * | 2021-04-25 | 2021-08-24 | 华电电力科学研究院有限公司 | Preparation method of standard solution for online detection of pH meter |
| CN114813850A (en) * | 2022-04-29 | 2022-07-29 | 华能国际电力股份有限公司 | Water quality sodium ion detection and analysis system and use method |
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| JPS6131952A (en) * | 1984-07-25 | 1986-02-14 | Horiba Ltd | Concentration meter with automatic calibrating function |
| CN101038267A (en) * | 2007-04-13 | 2007-09-19 | 西安热工研究院有限公司 | Method and device for detecting flow injection type dissolved oxygen meter |
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2010
- 2010-11-29 CN CN2010105635243A patent/CN102128871A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS6131952A (en) * | 1984-07-25 | 1986-02-14 | Horiba Ltd | Concentration meter with automatic calibrating function |
| CN101038267A (en) * | 2007-04-13 | 2007-09-19 | 西安热工研究院有限公司 | Method and device for detecting flow injection type dissolved oxygen meter |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865114A (en) * | 2015-05-25 | 2015-08-26 | 南京华天科技发展有限公司 | Preparation method of standard sodium solution |
| CN104865114B (en) * | 2015-05-25 | 2017-06-06 | 南京华天科技发展股份有限公司 | A kind of sodium standard solution preparation method |
| CN105807000A (en) * | 2016-03-17 | 2016-07-27 | 山东电力研究院 | Online chemical instrument standard calibration device and method |
| CN110232980A (en) * | 2019-07-09 | 2019-09-13 | 阳江核电有限公司 | Sampler and online boron table calibration system for the online boron table calibration of nuclear power plant |
| CN110232980B (en) * | 2019-07-09 | 2024-05-10 | 阳江核电有限公司 | Sampling device for calibrating online boron meter of nuclear power plant and online boron meter calibration system |
| CN112816531A (en) * | 2021-02-25 | 2021-05-18 | 大唐秦岭发电有限公司 | Device and method for online measurement of sodium content in ammonia water |
| CN113030226A (en) * | 2021-03-30 | 2021-06-25 | 大唐秦岭发电有限公司 | Online sodium meter calibration method |
| CN113030226B (en) * | 2021-03-30 | 2023-08-11 | 大唐秦岭发电有限公司 | On-line sodium meter calibration method |
| CN113295486A (en) * | 2021-04-25 | 2021-08-24 | 华电电力科学研究院有限公司 | Preparation method of standard solution for online detection of pH meter |
| CN114813850A (en) * | 2022-04-29 | 2022-07-29 | 华能国际电力股份有限公司 | Water quality sodium ion detection and analysis system and use method |
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Application publication date: 20110720 |