CN113295486A - Preparation method of standard solution for online detection of pH meter - Google Patents
Preparation method of standard solution for online detection of pH meter Download PDFInfo
- Publication number
- CN113295486A CN113295486A CN202110449992.6A CN202110449992A CN113295486A CN 113295486 A CN113295486 A CN 113295486A CN 202110449992 A CN202110449992 A CN 202110449992A CN 113295486 A CN113295486 A CN 113295486A
- Authority
- CN
- China
- Prior art keywords
- meter
- standard solution
- water
- way valve
- online
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012086 standard solution Substances 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 238000001514 detection method Methods 0.000 title description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 81
- 238000009792 diffusion process Methods 0.000 claims abstract description 35
- 239000011347 resin Substances 0.000 claims abstract description 25
- 229920005989 resin Polymers 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 22
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000007689 inspection Methods 0.000 claims abstract description 11
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 9
- 238000005259 measurement Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 239000000243 solution Substances 0.000 claims description 9
- 238000005070 sampling Methods 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 6
- 239000012670 alkaline solution Substances 0.000 claims description 5
- 238000012360 testing method Methods 0.000 claims description 4
- 230000003113 alkalizing effect Effects 0.000 claims 2
- 238000004364 calculation method Methods 0.000 abstract description 8
- 239000012535 impurity Substances 0.000 abstract description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 230000002572 peristaltic effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- 239000003729 cation exchange resin Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a preparation method of a standard solution for online inspection of a pH meter, wherein a generating device comprises a mixed resin column, an alkalinizing liquid bottle, a diffusion tube, a flow cell, a conductivity meter, a transmitter, a flowmeter and a valve; the alkalizer is added into the online water sample through the diffusion tube, so that the introduction of impurities is avoided, and then the accurate pH value of the standard solution is given through the conductivity which can be accurately measured by using a desalted water and ammonia adding pH calculation model. Compared with the traditional pH standard solution, the device can generate the standard solution with the characteristics basically similar to those of an online water sample, and can perform online inspection and calibration. Compared with the existing online continuous pH standard solution preparation device, the device adds the gaseous alkalizer through the diffusion tube, so that impurities cannot be introduced, the accuracy is higher, and the device is more stable without a dosing pump.
Description
Technical Field
The invention relates to the technical field of power plant water vapor online chemical instrument inspection, in particular to a preparation method of a standard solution for online inspection of a pH meter.
Background
The on-line pH meter is one of key instruments of a water vapor system of a power plant, generally sampling points are arranged at an outlet of a condensate pump, an outlet of an economizer, furnace water and steam, and the pH value is centrally measured among water vapor sampling after temperature reduction, pressure reduction and constant temperature. In order to control the corrosion and scaling of a water vapor system, the control of the pH values of the feed water and the furnace water is particularly important, so that the pH values of the water samples need to be monitored in real time, and the dosage is adjusted according to the pH measured value to control the pH values of the feed water and the furnace water within a standard required range.
At present, the pH value of a water vapor system of a power plant is monitored on line by mainly adopting a direct electrode method, but water samples of the water vapor system belong to pure water, and the static charge, the liquid connection potential and the temperature can cause great influence on measurement. According to the research and statistics of the authority on the accuracy of the online pH meter of the water vapor system, the pass rate of the working error of the whole machine is below 40%. The error source is analyzed and counted, and the most main reason is found to be the error of the test calibration.
At present, most power plants still adopt a standard solution method for static calibration, the used standard solutions are 6.86 and 9.18 buffer solutions, the conductivity of the solution is large, and the solution is obviously different from an online water sample. When a successfully calibrated pH meter is re-put into measurement, large errors can also be generated due to online water sample flow rate, static charge, and the like.
According to the requirements of the Power plant on-line chemical instrument test protocol (DL/T677-.
The existing online continuous pH standard solution preparation devices adopt a direct dosing method, an alkalizer is added into an online water sample through a dosing pump, the alkalizer is inevitably contacted with air in the processes of configuration, storage and use, carbon dioxide in the air reacts with the alkalizer, the generated pH standard solution contains impurities, and the pH error obtained by adopting a desalted water ammoniation pH calculation model is large, so that the accuracy and reliability of the standard solution cannot be ensured.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a device and a method capable of realizing the generation of an online continuous pH standard solution.
The technical scheme adopted by the invention for solving the problems is as follows: a preparation method of a standard solution for online inspection of a pH meter is characterized in that a generating device comprises a mixed resin column, an alkalinizing liquid bottle, a diffusion tube, a flow cell, a conductivity meter, a transmitter, a flowmeter and a valve; the device comprises a water inlet of a mixed resin column, a flow meter II, a needle valve I, a three-way valve I, an alkalization liquid bottle, a diffusion pipe, a flow rate meter, a transmitter, a three-way valve III and a flow meter I, wherein the flow meter II is installed at a water inlet of the mixed resin column, the needle valve I is connected beside an inlet of the flow meter II, a water outlet of the mixed resin column is communicated to the three-way valve I, one path of the three-way valve I is communicated to the three-way valve II through the needle valve II, the other path of the three-way valve I is communicated to an inlet of the alkalization liquid bottle through the needle valve IV, the alkalization liquid bottle is filled with the alkalization liquid, an outlet of the diffusion pipe is connected to the three-way valve II, the three-way valve II is connected to an inlet of the flow cell, the flow rate meter is arranged in the flow cell, the flow rate meter is connected to the transmitter, an outlet of the flow cell is connected to the three-way valve III, and the flow rate meter I is connected to the three-way valve I;
a water sample at a sampling position enters a mixed resin column after pressure and flow are adjusted through a needle valve I, the water sample is changed into desalted water after being processed through the mixed resin column, the desalted water enters a bypass and a diffusion tube through a needle valve II and a needle valve IV respectively, alkalized liquid and the entered desalted water form alkalized solution through the diffusion tube, the alkalized solution and the bypassed desalted water are mixed and then enter a flow cell, measurement is carried out through a conductivity meter, a transmitter receives a measurement result of the conductivity meter and gives a pH value of effluent, namely standard solution, of the device.
The method adopted by the invention is as follows: the alkalizer is added into the online water sample through the diffusion tube, so that the introduction of impurities is avoided, and then the accurate pH value of the standard solution is given through the conductivity which can be accurately measured by using a desalted water and ammonia adding pH calculation model. Compared with the traditional pH standard solution, the device can generate the standard solution with the characteristics basically similar to those of an online water sample, and can perform online inspection and calibration. Compared with the existing online continuous pH standard solution preparation device, the device adds the gaseous alkalizer through the diffusion tube, so that impurities cannot be introduced, the accuracy is higher, and the device is more stable without a dosing pump.
Furthermore, the conductivity meter adopts a single-channel conductivity meter, has the temperature compensation functions of pure water, acidity, ammonia and the like, and meets the requirement of the distributed conductivity electrode constant of 0.01cm-1Grade or 0.04cm-1And (4) stages.
Furthermore, the mixed resin column is adopted to treat the water inlet of the device into desalted water, and the conductivity of the desalted water can reach below 0.060 mu S/cm.
Further, the alkalifying liquid bottle is a glass bottle or an organic glass bottle, and the alkalifying liquid is high-grade pure concentrated ammonia water.
Furthermore, the pH value of the water sample is adjusted by adopting a diffusion method instead of a direct dosing method, so that impurities can be prevented from entering the water sample to influence the accuracy of the standard solution.
Furthermore, the pH value of the standard solution adopts a theoretical calculation method, the measurement result of the conductivity meter is used as an input signal, and the pH value of the standard solution is output through the operation of a built-in program, so that the accuracy is high.
Furthermore, the bypass and the water sample flow entering the diffusion tube can be adjusted through the needle valve II, so that the pH value of the standard solution can be adjusted at any time, the generated standard solution is a continuous online water sample, and the requirement of the online pH meter on inspection and calibration can be completely met.
The pH value of the generated standard solution is calculated by measuring the conductivity of the mixed water sample, and the accurate pH value can be obtained by adopting a desalted water and ammonia adding pH calculation model because the standard solution belongs to a desalted water and ammonia adding water sample alone.
The calculation model of the pH value of the desalted water and the ammonia only has one input variable of the conductivity, and the variable can be accurately measured, so that the accuracy of the pH calculation is ensured.
The invention uses the diffusion tube as a dosing means, and the steam of the liquid alkalizer enters the online water sample through the diffusion tube, thereby ensuring the purity of the alkalizer entering the online water sample and avoiding the influence of impurities on the standard solution.
In order to ensure the calculation accuracy of the pH standard solution, the invention installs a mixed resin exchange column in the first step after manual sampling, removes all anions and cations in a water sample to obtain desalted water, and then takes the desalted water as diluent to prepare the continuous pH standard solution on line.
Compared with the prior art, the invention has the following advantages and effects:
the standard solution only contains a single type of alkalizer, basically has no impurities, and has more accurate pH value. In the prior art, a high-concentration alkalizer solution is injected into an online water sample by a dosing pump, and the alkalizer solution can absorb carbon dioxide in the processes of preparation, storage and use, so that the pH value of a standard solution has deviation. The invention adopts the diffusion tube to add the gaseous alkalizer into the online water sample, and the gaseous alkalizer is not influenced by carbon dioxide, so that the pH value of the standard solution generated by the device is more accurate.
The diffusion tube is used as a medicine adding means, so that the system is simpler and more stable. In the prior art, a peristaltic pump is basically used as a dosing device, but the peristaltic pump is unstable in the operation process and is easily influenced by flow and pressure, so that the pH value fluctuation range of the generated standard solution is large. The invention adopts the diffusion tube as a dosing means, the gaseous alkalization agent which is diffused into the tube in unit time has a certain amount, and the standard solutions with different pH values can be obtained by controlling the flow of the water sample through the needle valve.
Ammonia is used as an alkalizer to prepare a pH standard solution, the obtained standard solution is basically the same as an actual water sample, and online pH meter inspection and calibration performed by using the standard solution is more scientific and accurate.
Drawings
FIG. 1 is a schematic diagram of the apparatus of the present invention.
In the figure: the device comprises a needle valve I1, a mixed resin column 2, a three-way valve I3, a needle valve II 4, a three-way valve II 5, an alkalization liquid bottle 6, an alkalization liquid 7, a diffusion pipe 8, a flow cell 9, a conductivity meter 10, a three-way valve III 11, a flow meter I12, a needle valve III 13, a needle valve IV 14, a transmitter 15 and a flow meter II 16.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
Examples
Referring to fig. 1, in the present embodiment, the generating device includes a mixed resin column 2, an alkaline solution bottle 6, a diffusion tube 8, a flow cell 9, a conductivity meter 10, a transducer 15, a flow meter, and a pipeline and a valve connected therebetween; the flow meter II 16 is installed at a water inlet of the mixed resin column 2, a needle valve I1 is connected beside an inlet of the flow meter II 16, a water outlet of the mixed resin column 2 is communicated to a three-way valve I3, one path of the three-way valve I3 is communicated to a three-way valve II 5 through a needle valve II 4, the other path of the three-way valve I3 is communicated to an inlet of a diffusion pipe 8 in an alkalization liquid bottle 6 through a needle valve IV 14, the alkalization liquid 7 is contained in the alkalization liquid bottle 6, an outlet of the diffusion pipe 8 is connected to the three-way valve II 5, the three-way valve II 5 is connected to an inlet of a flow cell 9, a conductivity meter 10 is arranged in the flow cell 9, the conductivity meter 10 is connected to a transmitter 15, an outlet.
Inside the generating device, a second flow meter 16, a mixed resin column 2, a first three-way valve 3, a second three-way valve 5, a flow cell 9, a third three-way valve 11 and a first flow meter 12 are connected in series, and water samples sequentially pass through the units. The needle valve (4) is connected with the needle valve (14) and the diffusion pipe (8) in parallel, and the flow rates of the needle valve (4) and the diffusion pipe are adjusted through the needle valve II (14) and the needle valve IV (14).
The standard solution generating device for online pH meter detection is a portable device and can be used in any field. In the power plant, generally use between the steam sample, connect manual sample connection water sample during the use, the water sample temperature should not be too high. The device is butted with a manual sampling port through a plastic hose, the bypass flow is adjusted through a needle valve I1, and the water sample flow is controlled within a proper range.
The preparation method comprises the following steps: a water sample at a sampling position enters a mixed resin column 2 after pressure and flow are adjusted through a needle valve I1, the water sample is changed into desalted water after being processed through the mixed resin column 2, the desalted water enters a bypass and a diffusion tube 8 through a needle valve II 4 and a needle valve IV 14 respectively, alkalization liquid 7 forms alkalization solution with the entered desalted water through the diffusion tube 8 and enters a flow cell 9 after being mixed with the bypass desalted water, measurement is carried out through a conductivity meter 10, a transmitter 15 receives a measurement result of the conductivity meter 10 and gives out the pH value of effluent of the device, namely standard solution.
Specifically, the conductivity meter 10 is connected to the transmitter 15 through a signal transmission line, and transmits the measurement result to the transmitter 15 in real time as a standard signal of 4 to 20 mA.
Specifically, the first needle valve 1 and the third needle valve 13 are flow control auxiliary valves, and outlet water is directly discharged to a unit drainage tank.
Specifically, when online pH inspection calibration is carried out, steam is recommended to be used as an access water sample, and the flow of the water sample is controlled by adjusting the needle valve I1, so that the flow meter II 16 is maintained at about 5L/h.
Specifically, macroporous type color-changing anion-cation exchange resin is filled in the mixed resin column 2, and an automatic exhaust valve is arranged at the top of the mixed resin column 2 and can automatically exhaust gas in the mixed resin column 2.
Specifically, the second needle valve 4 and the fourth needle valve 14 are used for flow distribution adjustment, and when a standard solution with higher pH is required, the flow passing through the diffusion pipe 8 is increased by adjusting the valves; when a lower low pH standard solution is required, the valve is adjusted to make the flow through the diffusion tube 8 smaller.
Specifically, the alkaline solution bottle 6 is a glass bottle or an organic glass bottle, and the alkaline solution 7 is super pure strong ammonia water.
Specifically, the diffusion tube 8 can be a silicon rubber hose with good air permeability, the inner diameter of the hose is 2-3 mm, the wall thickness is about 1mm, and the length is about 50 cm; according to the requirement, a plurality of diffusion tubes 8 can be connected in parallel, and the diffusion tubes 8 are fixed inside the alkalinizing liquid bottle 6 in an S shape.
Specifically, the prepared pH standard solution enters the flow cell 9 through the three-way valve II 5 for conductivity measurement, and ammonia compensation is selected during measurement.
Specifically, the transmitter 15 receives the measurement result of the conductivity meter 10, automatically calculates the pH value of the standard solution by a built-in program, and displays the pH value in real time.
Specifically, the standard solution which completes the conductivity measurement enters a three-way valve three 11, and a needle valve three 13 is adjusted to maintain a flow meter one 12 at about 5L/h.
Specifically, when the online pH meter is checked and calibrated, the effluent of the flowmeter I12 can be connected into the flow cell 9 of the pH meter to be checked and calibrated to be used as a standard solution for checking and calibrating.
Those not described in detail in this specification are well within the skill of the art.
Although the present invention has been described with reference to the above embodiments, it should be understood that the scope of the present invention is not limited thereto, and that various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the present invention.
Claims (4)
1. A preparation method of a standard solution for online inspection of a pH meter is characterized in that a generating device comprises a mixed resin column (2), an alkalinizing liquid bottle (6), a diffusion tube (8), a flow cell (9), a conductivity meter (10), a transmitter (15), a flowmeter and a valve; the water inlet of the mixed resin column (2) is provided with a second flow meter (16), a first needle valve (1) is connected beside an inlet of the second flow meter (16), a water outlet of the mixed resin column (2) is communicated to a first three-way valve (3), one path of the first three-way valve (3) is communicated to a second three-way valve (5) through a second needle valve (4), the other path of the first three-way valve (3) is communicated to an inlet of a diffusion pipe (8) in an alkalization liquid bottle (6) through a fourth needle valve (14), the alkalization liquid bottle (6) is filled with alkalization liquid (7), an outlet of the diffusion pipe (8) is connected to the second three-way valve (5), the second three-way valve (5) is connected to an inlet of a flow cell (9), a conductivity meter (10) is arranged in the flow cell (9), the conductivity meter (10) is connected to a transmitter (15), an outlet of the flow cell (9) is connected with a third three-way valve (11), one path of the three-way valve (11) is connected with a third needle valve (13), and the other path of the three-way valve (11) is connected with a first flowmeter (12);
a water sample at a sampling position enters a mixed resin column (2) after pressure and flow are adjusted through a needle valve I (1), the water sample is changed into desalted water after being processed through the mixed resin column (2), the desalted water enters a bypass and a diffusion tube (8) through a needle valve II (4) and a needle valve IV (14) respectively, an alkalizing solution (7) forms an alkalizing solution with the entered desalted water through the diffusion tube (8) and is mixed with the desalted water of the bypass to enter a flow cell (9), measurement is carried out through a conductivity meter (10), and a transmitter (15) receives a measurement result of the conductivity meter (10) and gives a pH value of a device effluent, namely a standard solution.
2. The method for preparing the standard solution for the online test of the pH meter according to claim 1, wherein the conductivity meter (10) is a single-channel conductivity meter with temperature compensation function, and the constant of the distributed conductivity electrode is 0.01cm-1Grade or 0.04cm-1And (4) stages.
3. The method for preparing a standard solution for online pH meter inspection according to claim 1, wherein the device is charged with water using the mixed resin column (2) to form a demineralized water having an electric conductivity of 0.060 μ S/cm or less.
4. The method for preparing the standard solution for the online test of the pH meter according to claim 1, wherein the alkaline solution bottle (6) is a glass bottle or an organic glass bottle, and the alkaline solution (7) is super pure strong ammonia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110449992.6A CN113295486A (en) | 2021-04-25 | 2021-04-25 | Preparation method of standard solution for online detection of pH meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110449992.6A CN113295486A (en) | 2021-04-25 | 2021-04-25 | Preparation method of standard solution for online detection of pH meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113295486A true CN113295486A (en) | 2021-08-24 |
Family
ID=77320133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110449992.6A Pending CN113295486A (en) | 2021-04-25 | 2021-04-25 | Preparation method of standard solution for online detection of pH meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113295486A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114487028A (en) * | 2022-01-26 | 2022-05-13 | 西安热工研究院有限公司 | Method and device for improving pH on-line measurement accuracy of low-conductivity water sample |
| CN114791457A (en) * | 2022-03-01 | 2022-07-26 | 三门核电有限公司 | Power plant online pH analyzer verification method and device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4472354A (en) * | 1980-10-21 | 1984-09-18 | Electric Power Research Institute, Inc. | System for continuously monitoring the ionic content of steam-producing water |
| JPH064139A (en) * | 1992-06-17 | 1994-01-14 | Seiko Epson Corp | Flow rate controller |
| CN201034966Y (en) * | 2007-04-13 | 2008-03-12 | 西安热工研究院有限公司 | Testing device of mobile on-line pH measuring instrument |
| 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 |
| CN203082424U (en) * | 2012-12-20 | 2013-07-24 | 河南省电力勘测设计院 | Recombination action regulating valve reducing through-flow caliber |
| CN204556349U (en) * | 2015-03-06 | 2015-08-12 | 广西防城港核电有限公司 | Online sodium table water sample alkalization measurement mechanism |
| CN107145175A (en) * | 2017-05-26 | 2017-09-08 | 中国核动力研究设计院 | A kind of steam generator feed temperature controls simulation system |
-
2021
- 2021-04-25 CN CN202110449992.6A patent/CN113295486A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4472354A (en) * | 1980-10-21 | 1984-09-18 | Electric Power Research Institute, Inc. | System for continuously monitoring the ionic content of steam-producing water |
| JPH064139A (en) * | 1992-06-17 | 1994-01-14 | Seiko Epson Corp | Flow rate controller |
| CN201034966Y (en) * | 2007-04-13 | 2008-03-12 | 西安热工研究院有限公司 | Testing device of mobile on-line pH measuring instrument |
| 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 |
| CN203082424U (en) * | 2012-12-20 | 2013-07-24 | 河南省电力勘测设计院 | Recombination action regulating valve reducing through-flow caliber |
| CN204556349U (en) * | 2015-03-06 | 2015-08-12 | 广西防城港核电有限公司 | Online sodium table water sample alkalization measurement mechanism |
| CN107145175A (en) * | 2017-05-26 | 2017-09-08 | 中国核动力研究设计院 | A kind of steam generator feed temperature controls simulation system |
Non-Patent Citations (2)
| Title |
|---|
| 刘伟等: "发电厂在线pH表准确度的一种检验方法", 《上海电力学院学报》 * |
| 石秋生: "DN-1型微量钠在线监测仪的研制", 《热力发电》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114487028A (en) * | 2022-01-26 | 2022-05-13 | 西安热工研究院有限公司 | Method and device for improving pH on-line measurement accuracy of low-conductivity water sample |
| CN114791457A (en) * | 2022-03-01 | 2022-07-26 | 三门核电有限公司 | Power plant online pH analyzer verification method and device |
| CN114791457B (en) * | 2022-03-01 | 2023-07-14 | 三门核电有限公司 | Verification method and device for online pH analyzer of power plant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113295486A (en) | Preparation method of standard solution for online detection of pH meter | |
| CN102798565B (en) | Gas distribution device utilizing saturated steam method to simulate exhalation gas alcohol content and concentration algorithm thereof | |
| CN215598814U (en) | Standard solution generating device for online inspection of pH meter | |
| WO2022193562A1 (en) | Intelligent verification and maintenance system and method for online chemical instruments | |
| CN106769929A (en) | Air gaseous state nitric acid On-line Measuring Method and device based on Flow Injection Analysis | |
| CN214472941U (en) | Device for on-line measurement of sodium content in ammonia water | |
| CN112129909B (en) | Online instrument evaluation test device and test method for water quality of power plant | |
| CN213517098U (en) | Power plant water quality on-line instrument evaluation test device | |
| CN112213439A (en) | Device and method for measuring content of dissolved hydrogen in high-temperature high-pressure steam | |
| CN112881639A (en) | On-site on-line intelligent testing and calibrating system for chemical instrument | |
| CN108195950A (en) | The dilution error detection device and its detection method of calibrating gas dilution device based on gas chromatograph | |
| CN212658669U (en) | Device for measuring content of dissolved hydrogen in high-temperature and high-pressure steam | |
| CN111141885A (en) | Automatic detection device and detection method for gas mercury detector | |
| CN106706082A (en) | Field service type standard meter method-based flow detection equipment | |
| CN214122219U (en) | Mobile online silicon meter and phosphorus meter testing device | |
| CN210269762U (en) | Automatic detection device for gas mercury detector | |
| CN217060182U (en) | Be used for portable sodium ion concentration measurement device of nuclear power station | |
| CN112067682A (en) | Online dissolved oxygen meter zero calibration system and method | |
| CN210426717U (en) | Sound velocity nozzle calibrating device | |
| RU177955U1 (en) | PH meter calibration device | |
| CN113310865A (en) | Nuclear power station active carbon performance detection system and method | |
| CN114791457B (en) | Verification method and device for online pH analyzer of power plant | |
| CN210534048U (en) | Calibrating device for aerator | |
| CN212622384U (en) | On-line dissolved oxygen meter zero calibration system | |
| CN219496302U (en) | Device for measuring water and oxygen in gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210824 |
|
| RJ01 | Rejection of invention patent application after publication |