CN106644678B - A kind of method and apparatus measuring power plant's water degasification hydrogen conductivity - Google Patents
A kind of method and apparatus measuring power plant's water degasification hydrogen conductivity Download PDFInfo
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- CN106644678B CN106644678B CN201710049445.2A CN201710049445A CN106644678B CN 106644678 B CN106644678 B CN 106644678B CN 201710049445 A CN201710049445 A CN 201710049445A CN 106644678 B CN106644678 B CN 106644678B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
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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
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Abstract
The present invention relates to a kind of method and apparatus for measuring power plant's water degasification hydrogen conductivity, belong to water treatment of power plant field.Device includes boiling pool and heat exchanger, there is thermometer and exhaust outlet at the top of the boiling pool, internal having heaters, has solenoid inside the heat exchanger；Sample water enters heat exchanger from the cooling water inlet of heat exchanger lower part, flows out from the cooling water outlet on top, then enters boiling pool from boiling pool lower part, flows out from top, enters back into the hot water inlet on solenoid top, and the hot water outlet of solenoid lower part is connected to conductivity electrode.Sample water is heated to critical boiling with heater by the present invention, in this way, the CO dissolved in sample water2It will be precipitated, reach to CO in water because of temperature raising, solubility decline due to2The purpose of removal.
Description
Technical field
The present invention relates to a kind of method and apparatus for measuring power plant's water degasification hydrogen conductivity, belong to water treatment of power plant field.
Background technique
Hydrogen conductivity is that sample water passes through the conductivity measured after hydrogen form cation resin treatment, for characterizing steam sample
The number of middle anion-content.It is the important indicator for reflecting therrmodynamic system water and steam quality.
But when containing carbon dioxide in sample, CO2It is dissolved in sample water and will form carbanion, cation exchange
Column can not remove carbanion, then CO2It just will affect the measurement than leading and sun is led, increase measured value, and cause vapour
The problems such as unqualified, unit starting time in water qualitative data extend.By to CO in sample water2Removal, can well
Solve this problem.After effective degasification measure, the carbanion in sample water is removed, hydrogen conductivity at this time (or
Degasification conductance) it could really reflect the influence of sample impurities in water.And it is efficiently removed in water using which kind of method is simple and fast
CO2, it is main elaboration of the invention.
Summary of the invention
For existing to the CO occurred in hydrogen conductivity measurement2The problem of interference, the technical problems to be solved by the invention
It is to provide a kind of method and apparatus for measuring power plant's water degasification hydrogen conductivity.
Sample water is placed in closing boiling pool by the present invention, so that sample water is reached shape close to boiling using heater
State utilizes CO2The characteristic that solubility in water declines with the rising of temperature, the CO in sample water2Removal.It is mounted on
Thermometer in closing boiling pool can indicate temperature, the heat exchanger being mounted on boiling pool side, can be the sample water of heating
It is cooling, while the sample water of room temperature can be heated again.Conductivity electrode after heat exchanger, can be with real-time measurement CO2It is gone
At this moment hydrogen conductivity value after removing can also be degassing conductance.
To achieve the above objectives, the technical solution adopted by the present invention is that:
A kind of device measuring power plant's water degasification hydrogen conductivity includes boiling pool and heat exchanger, the boiling pool top
There are a thermometer and exhaust outlet, internal having heaters has solenoid inside the heat exchanger；
Sample water enters heat exchanger from the cooling water inlet of heat exchanger lower part, flows out from the cooling water outlet on top, then from boiling
The lower part Teng Chi enters boiling pool, flows out from top, enters back into the hot water inlet on solenoid top, the hot water outlet of solenoid lower part
It is connected to conductivity electrode.
Using above-mentioned apparatus, CO in sample water is removed2, the method for measuring hydrogen conductivity, process is as follows:
1) sample water with positive pressure is from the cooling water inlet on heat exchanger, into heat exchanger, after coming into full contact with solenoid, quilt
Hot water in solenoid tentatively heats, and then flows out through cooling water outlet；
2) heat exchanger exit outflow by preliminarily heated sample water, enter boiling pool through boiling pool lower part, in heater
Under the action of, sample water is heated to 96 ~ 98 DEG C, close to the state of boiling, CO in water2Solubility declines since temperature raises
The reason of, it is precipitated；
3) the degassed sample water of high temperature is flowed out through boiling pool top, into the hot water inlet on solenoid top, in heat exchanger
Interior, helical outer tube layer is the sample water for just having entered heat exchanger；
4) degassed sample water after cooling, flows through conductivity electrode, and continuous measurement degassing conductivity, is exactly in Current Temperatures
Under degassing conductivity.
The present invention makes sample using heater after full of sample using a closed boiling pool with inlet and outlet
Product water state close to boiling, after reaching expected temperature, the CO that is dissolved in water2Gas will be precipitated because solubility declines, this
Sample just realizes CO in water2Removal, reach eliminate CO2Interference to hydrogen conductivity measurement.
Detailed description of the invention
Fig. 1 removes the CO in water removal using boiling principle2Device structural schematic diagram.
1- boiling pool, 2- heat exchanger, 3- heater, 4- thermometer, 5- exhaust outlet, 6- solenoid, 7- cooling water inlet, 8- are cold
Water out, 9- hot water inlet, 10- hot water outlet, 11- conductivity electrode.
Specific embodiment
Such as Fig. 1, a kind of CO gone in water removal using boiling principle2Device, include boiling pool and heat exchanger, the boiling
There are thermometer and exhaust outlet at the top of pond, internal having heaters has solenoid inside the heat exchanger；
Sample water enters heat exchanger from the cooling water inlet of heat exchanger lower part, flows out from the cooling water outlet on top, then from boiling
The lower part Teng Chi enters boiling pool, flows out from top, enters back into the hot water inlet on solenoid top, the hot water outlet of solenoid lower part
It is connected to conductivity electrode.
Using above-mentioned apparatus, CO in sample water is removed2, the method for measuring hydrogen conductivity, process is as follows:
1) sample water with positive pressure is from the cooling water inlet on heat exchanger, into heat exchanger, after coming into full contact with solenoid, quilt
Hot water in solenoid tentatively heats, and then flows out through cooling water outlet；
2) heat exchanger exit outflow by preliminarily heated sample water, enter boiling pool through boiling pool lower part, in heater
Under the action of, sample water is heated to 98 DEG C, close to the state of boiling.CO in period water2Since temperature raises under solubility
The reason of drop, is precipitated, and reaches CO in removal sample2Purpose.Sample air water at this time can be referred to as degassed sample water, and temperature is in
State close to boiling.
3) the degassed sample water of high temperature is exported through boiling pool and is flowed out, into the hot water inlet of heat exchanger, in heat exchanger, and stream
Through double-deck solenoid, helical outer tube layer is the sample water in room temperature for just having entered heat exchanger, hot water and cold water according to
The double-deck solenoid, the realization cooling hot water of cold water are held in the palm, and is realized with the synchronous of hot water heating cold water.
4) degassed sample water after cooling flows through conductance electrode, measurement degassing conductivity.The hydrogen of some power plant condensed water
Conductivity is 0.16 ~ 0.18 μ s/cm, after degassing, in 0.06 ~ 0.09 μ s/cm.
Claims (2)
1. a kind of device for measuring power plant's water degasification hydrogen conductivity, which is characterized in that include boiling pool and heat exchanger, the boiling
Rising has thermometer and exhaust outlet at the top of pond, internal having heaters, has solenoid inside the heat exchanger；
Sample water enters heat exchanger from the cooling water inlet of heat exchanger lower part, flows out from the cooling water outlet on top, then from boiling pool
Lower part enters boiling pool, flows out from top, enters back into the hot water inlet on solenoid top, the hot water outlet connection of solenoid lower part
Conductivity electrode.
2. using the method for claim 1 described device measurement power plant's water degasification hydrogen conductivity, which is characterized in that including walking as follows
It is rapid:
1) sample water with positive pressure is from the cooling water inlet on heat exchanger, into heat exchanger, after coming into full contact with solenoid, by helical
Hot water in pipe tentatively heats, and then flows out through cooling water outlet；
2) heat exchanger exit outflow by preliminarily heated sample water, enter boiling pool through boiling pool lower part, in the work of heater
Under, sample water is heated to 96 ~ 98 DEG C, close to the state of boiling, CO in water2The original of solubility decline since temperature raises
Cause is precipitated；
3) the degassed sample water of high temperature is flowed out through boiling pool top, into the hot water inlet on solenoid top, in heat exchanger, spiral shell
Spool outer layer is the sample water for just having entered heat exchanger；
4) degassed sample water after cooling, flows through conductivity electrode, continuous measurement degassing conductivity, exactly under Current Temperatures
Between the electrical conductivity area that deaerates.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710049445.2A CN106644678B (en) | 2017-01-23 | 2017-01-23 | A kind of method and apparatus measuring power plant's water degasification hydrogen conductivity |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710049445.2A CN106644678B (en) | 2017-01-23 | 2017-01-23 | A kind of method and apparatus measuring power plant's water degasification hydrogen conductivity |
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| CN106644678A CN106644678A (en) | 2017-05-10 |
| CN106644678B true CN106644678B (en) | 2019-06-25 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110487851B (en) * | 2019-09-10 | 2024-06-21 | 华能国际电力股份有限公司 | Measurement system and method for conductivity of degassed hydrogen |
| CN111982980A (en) * | 2020-08-04 | 2020-11-24 | 北京边华电化学分析仪器有限公司 | Boiler pipeline leakage detection device |
| CN112665277B (en) * | 2020-12-24 | 2022-08-09 | 中国原子能科学研究院 | Integrated device for online reducing solution temperature and removing bubbles |
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| CN1619318A (en) * | 2004-12-07 | 2005-05-25 | 苏州大学 | How to measure the conductivity of water |
| CN102116757A (en) * | 2009-12-30 | 2011-07-06 | 上海城投原水有限公司 | Electrical conductivity measurement system and method for liquid |
| CN103412192A (en) * | 2013-07-08 | 2013-11-27 | 浙江省计量科学研究院 | Pure water conductivity measurement system |
| CN103743582A (en) * | 2013-12-12 | 2014-04-23 | 广州高澜节能技术股份有限公司 | Water-cooling radiator conductivity test apparatus |
| CN204374131U (en) * | 2014-12-22 | 2015-06-03 | 江苏昊申医学科技有限公司 | Electric conductivity test device |
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| CN1479094A (en) * | 2002-08-27 | 2004-03-03 | 上海电力学院 | Method and device for eliminating carbon dioxide influence in hydrogen electric conductivity measurement |
| JP2008241534A (en) * | 2007-03-28 | 2008-10-09 | Kurita Water Ind Ltd | Air-cooled cooler for high-temperature water and high-temperature water analyzer using the same |
| CN201177465Y (en) * | 2008-03-04 | 2009-01-07 | 刘晓宇 | Condensing heat exchanger for gas water heater |
| CN204041244U (en) * | 2014-08-06 | 2014-12-24 | 中国电力工程顾问集团西南电力设计院 | One utilizes balance of power plant cooling water backwater waste heat natural gas system |
| CN204882440U (en) * | 2015-06-15 | 2015-12-16 | 中广核工程有限公司 | Degasification hydrogen conductivity measuring device |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1619318A (en) * | 2004-12-07 | 2005-05-25 | 苏州大学 | How to measure the conductivity of water |
| CN102116757A (en) * | 2009-12-30 | 2011-07-06 | 上海城投原水有限公司 | Electrical conductivity measurement system and method for liquid |
| CN103412192A (en) * | 2013-07-08 | 2013-11-27 | 浙江省计量科学研究院 | Pure water conductivity measurement system |
| CN103743582A (en) * | 2013-12-12 | 2014-04-23 | 广州高澜节能技术股份有限公司 | Water-cooling radiator conductivity test apparatus |
| CN204374131U (en) * | 2014-12-22 | 2015-06-03 | 江苏昊申医学科技有限公司 | Electric conductivity test device |
| CN106053545A (en) * | 2016-06-17 | 2016-10-26 | 天津市龙网科技发展有限公司 | Conductivity analyzer system and control method thereof |
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