CN114813850A - Water quality sodium ion detection and analysis system and use method - Google Patents
Water quality sodium ion detection and analysis system and use method Download PDFInfo
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- CN114813850A CN114813850A CN202210466541.8A CN202210466541A CN114813850A CN 114813850 A CN114813850 A CN 114813850A CN 202210466541 A CN202210466541 A CN 202210466541A CN 114813850 A CN114813850 A CN 114813850A
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- 229910001415 sodium ion Inorganic materials 0.000 title claims abstract description 152
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 title claims abstract description 125
- 238000001514 detection method Methods 0.000 title claims abstract description 92
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000001502 supplementing effect Effects 0.000 claims abstract description 20
- 230000008929 regeneration Effects 0.000 claims description 13
- 238000011069 regeneration method Methods 0.000 claims description 13
- 150000001450 anions Chemical class 0.000 claims description 9
- 239000013589 supplement Substances 0.000 claims description 9
- 150000001768 cations Chemical class 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 238000007865 diluting Methods 0.000 claims description 3
- 239000000243 solution Substances 0.000 description 13
- 239000012086 standard solution Substances 0.000 description 9
- 238000005259 measurement Methods 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 7
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 6
- 229910052708 sodium Inorganic materials 0.000 description 6
- 239000011734 sodium Substances 0.000 description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 230000009469 supplementation Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
- G01N27/07—Construction of measuring vessels; Electrodes therefor
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Abstract
The invention belongs to the technical field of water quality detection, and particularly relates to a sodium ion detection and analysis system for water quality and a using method, wherein the sodium ion detection and analysis system comprises an instrument transmitter, a sodium ion detection system and an alkalizer supplementing tank which are sequentially connected, and further comprises a channel, a conductivity detector, a sodium ion proportioning tank and a pure water supplementing device; the output end of the sodium ion proportioning tank and the output end of the pure water supplementing device are connected with the input end of the conductivity detector, and the output end of the conductivity detector is connected with the output end of the channel; the online configuration of the detection solution is realized by adding the sodium ion proportioning tank and the pure water supplementing device, the conductivity detector is utilized to obtain the accurate sodium ion concentration of the detection solution, and then the sodium ion detection system is used for detecting the sodium ion concentration, so that the accuracy of the sodium ion detection system for detecting the sodium ion concentration can be obtained, and the detection reliability of the water quality sodium ion detection and analysis system is improved.
Description
Technical Field
The invention belongs to the technical field of water quality detection, and particularly relates to a sodium ion detection and analysis system for water quality and a using method.
Background
The sodium ions are one of key indexes needing monitoring of a steam system of the generator set and the steam power equipment, and have important significance for finding condenser leakage, fine treatment sodium leakage, steam quality deterioration and avoiding salt accumulation of a steam turbine.
The online sodium meter inspection qualified rate is far lower than that of a conductivity meter, the inspection qualified rate of the online sodium meter of most generator sets is even less than 50%, and the reliability of sodium ion analysis of a water vapor system is seriously reduced, so that the generator set runs at a higher salt deposition risk.
According to the general survey results of the operation conditions of a large number of online chemical meters, the measurement error of the online sodium meter is mainly caused by the following reasons:
1) electrode selectivity reduction or no response problem caused by electrode aging failure;
2) the on-line sodium meter does not monitor the alkalization effect of the water sample, and the water sample alkalization effect is poor due to blockage of an alkali inlet pipe or absence of an alkalizer, so that the measurement result is distorted;
3) the concentration deviation of the standard solution during off-line calibration and actual operation is large, and the low-concentration water sample can not be accurately measured in the actual measurement of the off-line calibrated sodium meter.
Disclosure of Invention
The invention aims to provide a water quality sodium ion detection and analysis system and a using method thereof, and solves the problem that the water quality sodium ion detection and analysis system has errors in measurement due to inaccurate measurement of the sodium ion detection system.
The technical problem solution of the invention is as follows:
a water quality sodium ion detection and analysis system is characterized by comprising an instrument transmitter, a sodium ion detection system and an alkalizer supplement tank which are sequentially connected, and further comprising a channel, a conductivity detector, a sodium ion proportioning tank and a pure water supplement device; the output end of the sodium ion proportioning tank and the output end of the pure water supplementing device are both connected with the input end of the conductivity detector, the output end of the conductivity detector is connected with the input end of the channel, and the output end of the channel is connected with the sodium ion detection system.
Further, the pure water supplementing device comprises an electric automatic regeneration cation removing device and an electric automatic regeneration anion removing device which are connected in sequence, and the output end of the electric automatic regeneration anion removing device is connected with the input end of the conductivity detector.
Further, a plurality of electrodes are arranged in the sodium ion detection system, the channels comprise a plurality of input channels in one-to-one correspondence with the electrodes, one ends of the electrodes are connected with the input end of the instrument transmitter, the other ends of the electrodes are connected with the output ends of the corresponding input channels, and the output ends of the conductivity detectors are respectively connected with the input end of each input channel.
Further defined, the electrode is a sodium ion selective composite electrode.
Further, the instrument transmitter comprises a sodium ion concentration detection result recording device, a sodium ion concentration comparison device and a timing device, and each electrode is electrically connected with the sodium ion concentration detection result recording device, the sodium ion concentration comparison device and the timing device.
A method for using a sodium ion detection and analysis system for water quality is characterized by comprising the following steps:
1) electrode replacement timing reminding;
2) detecting the sodium ion concentration and the pH value of the water sample in real time;
3) automatically calibrating the detection accuracy of the sodium ion concentration;
4) and (5) alarming the abnormal concentration of sodium ions in the water sample.
Further defined, the step 1) comprises the steps of:
1.1) setting the interval time of electrode timing replacement by using a timing device;
1.2) reminding after the electrode use time reaches the set interval time;
1.3) the motor is replaced after the timing device reminds, and the timing device starts to count time again.
Further defined, the 2) comprises the following steps:
2.1) measuring the concentration of sodium ions in the water sample and the pH value in the water sample by using the composite electrode and recording;
and 2.2) reminding when the pH value of the water sample is less than a set value.
Further defined, the 3) comprises the following steps:
3.1) closing the alkalizer supplementing tank and the channel, and opening the sodium ion proportioning tank and the pure water supplementing device;
3.2) diluting the sodium ions output by the sodium ion proportioning tank by pure water, and detecting by a conductivity detector to obtain the standard concentration of the sodium ions in the detection solution;
and 3.3) inputting the detection solution into a sodium ion detection system, detecting the sodium ion concentration of the detection solution through an electrode to obtain a detection concentration, and comparing the detection concentration with a standard concentration.
Further defined, the 4) comprises the following steps:
4.1) setting a reasonable range value of the sodium ion concentration in the water sample in a sodium ion concentration comparison device;
4.2) detecting the concentration of sodium ions in the water sample by an electrode in the sodium ion detection system and uploading a detection result to a sodium ion concentration detection result recording device and a sodium ion concentration comparison device;
4.3) reminding by the sodium ion concentration comparison device when the concentration of the sodium ions in the water sample obtained by comparison is not in a reasonable range;
4.4) outputting the change curve of the sodium ion concentration of the water sample by the sodium ion concentration detection result recording device.
The invention has the beneficial effects that:
1. the online configuration of the detection solution is realized by adding the sodium ion proportioning tank and the pure water supplementing device, the conductivity detector is utilized to obtain the accurate sodium ion concentration of the detection solution, and then the sodium ion detection system is used for detecting the sodium ion concentration, so that the accuracy of the sodium ion detection system for detecting the sodium ion concentration can be obtained, and the detection reliability of the water quality sodium ion detection and analysis system is improved.
2. The pure water supplementing device can obtain pure water in real time through the cooperation of the electric automatic regeneration cation removing device and the electric automatic regeneration anion removing device, the work task that the worker provides the pure water alone is removed, the work difficulty is reduced, and the work efficiency is also improved.
3. The electrode can be replaced in time after the electrode reaches the service cycle through the timing device, so that the reliability of the equipment is improved, and the accuracy and the reliability of a detection result are improved.
4. The pH value of the water sample can be measured while the sodium ion concentration of the water sample is measured by using the composite electrode, the real-time alkalization degree of the water sample is obtained, the problem of inaccurate measurement result caused by insufficient alkalization degree of the water sample is avoided, and whether the alkalization agent supplementing tank is blocked or not and whether the alkalization agent is insufficient or not can be checked in time.
5. The system can also remind in time after the concentration of the sodium ions in the water sample exceeds the standard, and outputs the change curve of the concentration of the sodium ions in the water sample, so that the staff can conveniently judge the source and the corresponding fault of the sodium ions.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
in the figure: 1. an instrument transmitter; 2. a sodium ion detection system; 3. an alkalizer supplement tank; 4. a first input channel; 5. a second input channel; 6. a third input channel; 7. a sodium ion proportioning tank; 8. an electrically automatic regenerating cation removing device; 9. an electrically automatic regeneration anion removal device; 10. a conductance detector; 11. a first solenoid valve; 12. a second solenoid valve.
Detailed Description
Example 1
Referring to fig. 1, a sodium ion detection and analysis system for water quality comprises an instrument transmitter 1, a sodium ion detection system 2, an alkalization agent supplement tank 3, a channel, a sodium ion proportioning tank 7, a pure water supplement device and a conductivity detector 10, wherein the instrument transmitter 1, the sodium ion detection system 2 and the alkalization agent supplement tank 3 are sequentially connected, an output end of the channel is connected with an input end of the sodium ion detection system 2, output ends of the sodium ion proportioning tank 7 and the pure water supplement device are simultaneously connected with an input end of the conductivity detector 10, and an output end of the conductivity detector 10 is connected with an input end of the channel.
The instrument transmitter 1 comprises a sodium ion concentration detection result recording device, a sodium ion concentration comparison device and a timing device; the sodium ion detection system 2 generally comprises a plurality of electrodes arranged in parallel, and the channels correspondingly generally comprise a plurality of input channels, such as a first input channel 4, a second input channel 5 and a third input channel 6, wherein each input channel is provided with one electrode, and each input channel can input different types of water samples; one end of each electrode is connected with a timing device, a sodium ion concentration comparison device and a sodium ion concentration detection result recording device; the timing device is used for recording the replacement time of each electrode, the service cycle of the electrodes is set in the timing device, for example, 18 months, and the electrodes can be reminded to replace the corresponding electrodes after being installed and used for 18 months, so that the inaccuracy of the measurement result caused by the failure of the electrodes is avoided, and the reliability and the stability of the measurement are ensured; similarly, the sodium ion concentration detection result recording device is used for recording the sodium ion concentration in the water sample input by the corresponding input channel detected by each electrode, and in order to discover the change of the sodium ion concentration in time, each electrode can also upload the sodium ion concentration to the sodium ion concentration comparison device when measuring the sodium ion concentration, and the prompt is given in time when discovering the change of the sodium ion concentration.
The sodium ion proportioning tank 7 is used for containing a solution containing sodium ions, a sodium chloride solution is usually selected, a pure water supplementing device is used for providing pure water, the solution containing sodium ions is diluted to obtain a standard solution, in order to ensure that the concentration of sodium ions of the obtained standard solution is controllable, the flow of the sodium ion proportioning tank 7 and the flow of the pure water supplementing device can be correspondingly controlled through a first electromagnetic valve 11 and a second electromagnetic valve 12, the standard solution is finally obtained after mixing and dilution, the standard solution enters a conductivity detector 10 to detect the content of the concentration of sodium ions, the obtained standard value is the sodium ion concentration, the standard value is usually selected to be 3 mu g/L and/or 6 mu g/L, the standard solution with different concentrations can be detected and calibrated through two times of standard solutions with different concentrations, and then the standard solution is respectively input into corresponding electrode detection environments through a first input channel 4, a second input channel 5 and a third input channel 6, come to detect standard solution through the electrode, obtain the concentration detected, contrast afterwards, in time discover to detect inaccurate electrode and calibrate or change, the interval time of calibrating usually is 1 ~ 2 months, and the calibration is once for a month usually to in time avoid effectively because there is the error in electrode detection to lead to the testing result inaccurate, guaranteed work efficiency.
The pure water supplementing device is preferably an electric automatic regeneration cation removing device 8 and an electric automatic regeneration anion removing device 9 which are sequentially connected, a water source is subjected to cation removal through the electric automatic regeneration cation removing device 8 after passing through a second electromagnetic valve 12, anions are removed through the electric automatic regeneration anion removing device 9, pure water is obtained, the pure water can be obtained in real time, independent supplementation through workers during use is not needed, real-time, efficient and stable pure water supplementation can be achieved, and the working efficiency is improved.
Alkalization agent supplyes jar 3 is used for providing alkalization environment for every input channel, guarantee that electrode testing environment's pH value meets the demands, avoid leading to sodium ion concentration detection to appear the error because of testing environment pH value changes, the electrode can adopt combined electrode, make can measure whether to correspond electrode testing environment's pH value meets the demands, for example pH value is less than 10.8 will remind, represent that the alkalization agent in testing environment alkalization agent supplyes jar 3 is not enough or the pipeline blocks up this moment, just can in time investigate the solution problem this moment, guarantee the normal operating of work, improve work efficiency.
Example 2
A method for using a sodium ion detection and analysis system for water quality comprises the following steps:
1) electrode replacement timing reminding;
1.1) setting the interval time of electrode timing replacement by using a timing device;
1.2) reminding after the electrode use time reaches the set interval time;
1.3) the motor is replaced after the timing device reminds, and the timing device starts to count time again.
2) Detecting the sodium ion concentration and the pH value of the water sample in real time, and reminding when the water sample is not sufficiently alkalized;
and 2.1) measuring the concentration of sodium ions in the water sample and the pH value in the water sample by using the composite electrode and recording.
And 2.2) reminding when the pH value of the water sample is less than a set value.
3) Automatically calibrating the detection accuracy of the sodium ion concentration;
3.1) closing the alkalizer supplementing tank 3 and the channel, and opening the sodium ion proportioning tank 7 and the pure water supplementing device;
3.2) diluting the sodium ions output by the sodium ion proportioning tank 7 by pure water, and detecting by an electric conductivity detector 10 to obtain the standard concentration of the sodium ions in the detection solution;
3.3) inputting the detection solution into the sodium ion detection system 2, detecting the sodium ion concentration of the detection solution through the electrode to obtain a detection concentration, and comparing the detection concentration with a standard concentration.
4) Alarming the abnormal concentration of sodium ions in the water sample;
4.1) inputting a reasonable range of the concentration of the sodium ions in the water sample in a sodium ion concentration comparison device;
4.2) the electrode in the sodium ion detection system 2 detects the concentration of sodium ions in the water sample and uploads the detection result to the sodium ion concentration detection result recording device and the sodium ion concentration comparison device;
4.3) reminding by the sodium ion concentration comparison device when the concentration of the sodium ions in the water sample obtained by comparison is not in a reasonable range;
4.4) outputting the change curve of the sodium ion concentration of the water sample by the sodium ion concentration detection result recording device.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Claims (10)
1. A water quality sodium ion detection and analysis system is characterized by comprising an instrument transmitter (1), a sodium ion detection system (2) and an alkalizer supplement tank (3) which are sequentially connected, and further comprising a channel, a conductivity detector (10), a sodium ion proportioning tank (7) and a pure water supplement device; the output end of the sodium ion proportioning tank (7) and the output end of the pure water supplementing device are both connected with the input end of the conductivity detector (10), the output end of the conductivity detector (10) is connected with the input end of the channel, and the output end of the channel is connected with the sodium ion detection system (2).
2. A water quality sodium ion detection and analysis system according to claim 1, wherein the pure water supplementing device comprises an electric automatic regeneration cation removing device (8) and an electric automatic regeneration anion removing device (9) which are connected in sequence, and the output end of the electric automatic regeneration anion removing device (9) is connected with the input end of the conductivity detector (10).
3. A water quality sodium ion detection and analysis system according to claim 2, wherein a plurality of electrodes are arranged in the sodium ion detection system (2), the channels comprise a plurality of input channels corresponding to the plurality of electrodes one to one, one end of each electrode is connected with the input end of the instrument transmitter (1), the other end of each electrode is connected with the output end of the corresponding input channel, and the output end of the conductivity detector (10) is connected with the input end of each input channel.
4. The aqueous sodium ion detection and analysis system of claim 3 wherein the electrode is a sodium ion selective composite electrode.
5. A water quality sodium ion detection and analysis system according to claim 4, wherein the instrument transmitter (1) comprises a sodium ion concentration detection result recording device, a sodium ion concentration comparison device and a timing device, and each electrode is electrically connected with the sodium ion concentration detection result recording device, the sodium ion concentration comparison device and the timing device.
6. A method for using a sodium ion detection and analysis system for water quality is characterized by comprising the following steps:
1) electrode replacement timing reminding;
2) detecting the sodium ion concentration and the pH value of the water sample in real time;
3) automatically calibrating the detection accuracy of the sodium ion concentration;
4) and (5) alarming the abnormal concentration of sodium ions in the water sample.
7. The use method of the water quality sodium ion detection and analysis system according to claim 6, wherein the step 1) comprises the following steps:
1.1) setting the interval time of electrode timing replacement by using a timing device;
1.2) reminding after the electrode use time reaches the set interval time;
1.3) the motor is replaced after the timing device reminds, and the timing device starts to count time again.
8. The use method of the water quality sodium ion detection and analysis system according to claim 7, wherein the step 2) comprises the following steps:
2.1) measuring the concentration of sodium ions in the water sample and the pH value in the water sample by using the composite electrode and recording;
and 2.2) reminding when the pH value of the water sample is less than a set value.
9. The use method of the water quality sodium ion detection and analysis system according to claim 8, wherein the step 3) comprises the following steps:
3.1) closing the alkalizer supplementing tank (3) and the channel, and opening the sodium ion proportioning tank (7) and the pure water supplementing device;
3.2) diluting the sodium ions output by the sodium ion proportioning tank (7) by pure water, and detecting by a conductivity detector (10) to obtain the standard concentration of the sodium ions in the detection solution;
3.3) inputting the detection solution into a sodium ion detection system (2), detecting the sodium ion concentration of the detection solution through an electrode to obtain a detection concentration, and comparing the detection concentration with a standard concentration.
10. The use method of the water quality sodium ion detection and analysis system according to claim 9, wherein the step 4) comprises the following steps:
4.1) setting a reasonable range value of the sodium ion concentration in the water sample in a sodium ion concentration comparison device;
4.2) the electrode in the sodium ion detection system (2) detects the concentration of sodium ions in the water sample and uploads the detection result to a sodium ion concentration detection result recording device and a sodium ion concentration comparison device;
4.3) reminding by the sodium ion concentration comparison device when the concentration of the sodium ions in the water sample obtained by comparison is not in a reasonable range;
4.4) outputting the change curve of the sodium ion concentration of the water sample by the sodium ion concentration detection result recording device.
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| CN113567514A (en) * | 2021-07-20 | 2021-10-29 | 国网山东省电力公司电力科学研究院 | Intelligent sodium ion analyzer device with full-automatic online calibration function and online calibration method |
-
2022
- 2022-04-29 CN CN202210466541.8A patent/CN114813850A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3556950A (en) * | 1966-07-15 | 1971-01-19 | Ibm | Method and apparatus for automatic electrochemical analysis |
| CN201368859Y (en) * | 2009-03-03 | 2009-12-23 | 边东福 | Multi-passage sodion monitor |
| CN102128871A (en) * | 2010-11-29 | 2011-07-20 | 西安热工研究院有限公司 | Flowing adding sodium analyzer checking method and device |
| CN106153849A (en) * | 2016-08-29 | 2016-11-23 | 南京华天科技发展股份有限公司 | A kind of multi-functional online water quality detecting device |
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