CN109238955A - A kind of corrosion on-line measurement device and method of boiler tube Process of Chemical Cleaning - Google Patents
A kind of corrosion on-line measurement device and method of boiler tube Process of Chemical Cleaning Download PDFInfo
- Publication number
- CN109238955A CN109238955A CN201811374154.1A CN201811374154A CN109238955A CN 109238955 A CN109238955 A CN 109238955A CN 201811374154 A CN201811374154 A CN 201811374154A CN 109238955 A CN109238955 A CN 109238955A
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- boiler tube
- measuring device
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- ring
- corrosion
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- 238000004140 cleaning Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000005259 measurement Methods 0.000 title claims abstract description 25
- 238000005260 corrosion Methods 0.000 title claims abstract description 19
- 230000007797 corrosion Effects 0.000 title claims abstract description 19
- 239000000126 substance Substances 0.000 title claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 28
- 229910052751 metal Inorganic materials 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000002848 electrochemical method Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 241000208340 Araliaceae Species 0.000 claims description 3
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims description 3
- 235000003140 Panax quinquefolius Nutrition 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 235000008434 ginseng Nutrition 0.000 claims description 3
- 238000000691 measurement method Methods 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 3
- 239000010931 gold Substances 0.000 claims 3
- 229910052737 gold Inorganic materials 0.000 claims 3
- 238000005516 engineering process Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000005518 electrochemistry Effects 0.000 description 2
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000157 electrochemical-induced impedance spectroscopy Methods 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/02—Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/008—Monitoring fouling
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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental & Geological Engineering (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The present invention relates to a kind of corrosion on-line measurement devices of boiler tube Process of Chemical Cleaning, including the first measuring device and the second measuring device, first, second measuring device includes several dead rings, at least one ring electrode and a U-shaped metal tube, dead ring is with the setting of ring electrode interval and fixed seal connection forms the tubulose measuring device being connected to, tubulose measuring device both ends are connect by flange with boiler tube to be cleaned, one insulating ring side wall offers through-hole, metal tube one end is connected to through-hole, the other end is equipped with reference electrode, ring electrode in first measuring device is made of boiler tube to be cleaned, ring electrode in second measuring device with the No scale pot boiler tube of boiler tube same material to be cleaned by being made, the present invention can make electrode identical as boiler tube wash course using boiler tube to be measured as measuring electrode, and it is arranged No scale pot boiler tube in measurement of comparison device i.e. the second ring loading electrode, comes when accurate judgement incrustation cleans up.
Description
Technical field
The present invention relates to detection device and method, in particular to a kind of corrosion of station boiler Process of Chemical Cleaning is surveyed online
Measure device and method.
Background technique
The boiler tube that power station uses can will form oxide layer, i.e. incrustation, shadow outside inner wall after prolonged use on hot face
The thermal efficiency for ringing boiler needs that chemical cleaning method is periodically used to remove incrustation, currently, can pass through electrochemical corrosion potential ECP
Monitoring technology, electrochemical impedance spectroscopy monitoring technology, electrochemistry noise monitoring technology and resistance probe monitoring technology etc. are clear to monitor
Process is washed, but the above method is unable to judge accurately whether incrustation cleans up just, causes cleaning process to terminate partially early or inclined
Evening, the case where cleaning not exclusively there are incrustation or corrode boiler tube.
Summary of the invention
The present invention in order to solve the problems in the existing technology, provide it is a kind of can accurate measurements cleaning effect boiler
Learn the corrosion on-line measurement device and method of cleaning process.
In order to achieve the above object, a kind of technical solution proposed by the present invention are as follows: corrosion of boiler tube Process of Chemical Cleaning
On-line measurement device, including the first measuring device and the second measuring device, first, second measuring device includes several
Dead ring, at least one ring electrode and a U-shaped metal tube, the dead ring and ring electrode interval are arranged and fix
It is tightly connected the tubulose measuring device for forming connection, tubulose measuring device both ends are connect by flange with boiler tube to be cleaned, and one
Insulating ring side wall offers through-hole, and described metal tube one end is connected to through-hole, and the other end is equipped with reference electrode, first measurement
Ring electrode in device is made of boiler tube to be cleaned, and the ring electrode in the second measuring device is by same with boiler tube to be cleaned
The No scale pot boiler tube of material is made.
Be further designed to above-mentioned technical proposal: the metal tube other end tube wall is equipped with mounting hole, the ginseng
Mounting hole is inserted into than electrode one end and is protruded into metal tube, and the other end is located at outside metal tube.
Metal tube other end end is equipped with counterbalance valve.
The metal pipe outer wall is wound with cooling tube.
The reference electrode other end and ring electrode outer wall are respectively connected with conducting wire.
The ring electrode and dead ring internal diameter match each other.
The dead ring is made of polytetrafluoroethylene material.
A kind of measurement method of the corrosion on-line measurement device of boiler tube Process of Chemical Cleaning, it is cyclic annular in the first measuring device
Electrode is made by intercepting boiler tube to be cleaned, and the first measuring device is connect with the boiler tube to be cleaned after truncation, first,
Conducting wire in two measuring devices is connect with identical electrochemical measurement instrument respectively, and the first and second measuring device is placed in identical
It cleans in environment；
The primary data for keeping the electrochemical measurement instrument connecting with the second measuring device in mind, the electricity to be connect with the first measuring device
Stop the cleaning of boiler tube to be cleaned after the data of chemical measurement instrument are identical as above-mentioned primary data.
The invention has the benefit that
The first measuring device is by intercepting boiler tube to be measured as measuring electrode in the present invention, incrustation to be cleaned on boiler tube
Identical as on electrode, the cleaning situation by incrustation on measurement ring electrode is the cleaning shape that can determine whether entire boiler tube
Condition, and wash course being compared by the second measuring device cleaned under environment on an equal basis, can with accurate judgement incrustation what
When clean up just.
Former boiler tube is returned by flanged joint after intercepting boiler tube, through flange in first measuring device both ends by the present invention
Pipeline will not influence the circulation for cutting open pipeline, wash course.
Present invention aperture on dead ring, and arrange reference electrode, without to the another aperture of boiler tube；Pass through setting reference electricity
Pole can accurately measure and reflect the electrode potential of metal electrode to be measured (i.e. ring electrode), electrode metal to be measured is prevented to be in
A possibility that Susceptibility To Intergranular Corrosion region, reduction " cross and wash ", guarantee is washed metal tube and is in potential safety area always.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of measuring device of the invention.
In above-mentioned attached drawing: 1- ring electrode, 2- dead ring, 21- through-hole, 3- metal tube, 31- mounting hole, 4- reference electrode,
5- counterbalance valve, 6- flange, 7- conducting wire, 8- cooling tube, 9- capillary.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention is described in detail.
Embodiment
As shown in Figure 1, a kind of corrosion on-line measurement device of boiler tube Process of Chemical Cleaning of the invention, including several
Dead ring 2, at least one ring electrode 1 and a U-shaped metal tube 3, it is cyclic annular there are three dead ring 2 is set in the present embodiment
There are two electrode 1 is set, dead ring 2 is made up of corrosion resistant polytetrafluoroethylene (PTFE), and ring electrode is by intercepting boiler tube to be measured
It is made, 2 internal diameter of dead ring and outer diameter match with ring electrode 1, and dead ring 2 and the setting of the interval of ring electrode 1, junction are logical
Cross anticorrosive glue fixed bonding, and keep sealing, form it into the tubulose measuring device of connection, the inner wall of tubulose measuring device and
Outer wall is smoothly connected, and flange 6 is fixedly installed in tubulose measuring device both ends, and passes through the boiler tube to be cleaned of flange 6 and truncation
Connection, does not influence the normal circulation of boiler tube.
Wherein 2 side wall of a dead ring offers through-hole 21, and 3 one end of metal tube is connected to through-hole 21 and junction seals, can
Make metal tube 3 formed salt bridge, the other end end be arranged counterbalance valve 5, because be likely to be in boiler tube cleaning process 100 degree with
On, counterbalance valve 5 can guarantee that measuring system works normally, overvoltage protection, and can be by the pressure of control counterbalance valve 5, to control
Metal pipe pressure makes metal tube 3 and boiler tube internal pressure power keep balancing；The metal tube other end is also provided with mounting hole 31, installation
Reference electrode 4 is set in hole 31, and reference electrode 4 and mounting hole 31 are tightly connected, and one end insertion mounting hole 31 simultaneously protrudes into metal tube 3
Interior, the other end is located at outside metal tube 3, is also arranged with cooling tube 8 on 3 outer wall of metal tube, solution in metal tube 3 can be cooled to ginseng
Than the temperature range that electrode 4 can work, guarantee reference electrode reliably working.
The present embodiment is equipped with a capillary 9 in the middle part of metal tube, can not only guarantee the connection of 9 liang of side systems of capillary, but also
Guarantor can reduce 9 right side pressure-bearing of capillary and reduce pressure-bearing at reference electrode 4, guarantee measurement accuracy；Reduce cleaning solution and reference
Electrode influences each other.
4 other end of reference electrode and 1 outer wall of ring electrode in the present embodiment are respectively connected with conducting wire 7, are used for and electrochemistry
Measuring instrument connection.
The measuring device of the present embodiment includes essentially identical the first measuring device and the second measuring device of structure, and first surveys
Amount device in ring electrode 1 be made of boiler tube to be cleaned, the ring electrode 1 in the second measuring device by with boiler to be cleaned
The No scale pot boiler tube of pipe same material is made.
Using the measurement method of the corrosion on-line measurement device of the Boiler Chemical process of the present embodiment, including walk as follows
It is rapid:
Step 1: the first measuring device is connect with the boiler tube to be cleaned after truncation, the conducting wire in the first and second measuring device point
It is not connect with identical electrochemical measurement instrument, the height of the potentiostat of potentiometric detection, galvanic couple detection may be selected in electrochemical apparatus
Hinder the frequency response generator etc. of instrument or AC impedance detection.
Step 2: the first and second measuring device is placed in identical cleaning environment, cleaned；
Step 3: the initial measurement data for the electrochemical measurement instrument connecting with the second measuring device is kept in mind, to measure with first
Stop the cleaning of boiler tube to be cleaned after the data of the electrochemical measurement instrument of device connection are identical as above-mentioned primary data.That is table
Incrustation on the ring electrode (i.e. boiler tube) of bright first measuring device cleans up, with the No scale pot furnace in the second measuring device
It manages identical.
Technical solution of the present invention is not limited to the various embodiments described above, all technical solutions obtained using equivalent replacement mode
It all falls in the scope of protection of present invention.
Claims (8)
1. a kind of corrosion on-line measurement device of boiler tube Process of Chemical Cleaning, it is characterised in that: including the first measuring device and
Second measuring device, first, second measuring device include several dead rings, at least one ring electrode and one in U
The metal tube of font, the dead ring is with the setting of ring electrode interval and fixed seal connection forms the tubulose measurement dress being connected to
It sets, tubulose measuring device both ends are connect by flange with boiler tube to be cleaned, and an insulating ring side wall offers through-hole, the metal
Pipe one end is connected to through-hole, and the other end is equipped with reference electrode, and the ring electrode in first measuring device is by boiler to be cleaned
Pipe is made, and the ring electrode in the second measuring device with the No scale pot boiler tube of boiler tube same material to be cleaned by being made.
2. the corrosion on-line measurement device of boiler tube Process of Chemical Cleaning according to claim 1, it is characterised in that: the gold
Belong to pipe other end tube wall and be equipped with mounting hole, described reference electrode one end is inserted into mounting hole and is protruded into metal tube, other end position
In outside metal tube.
3. the corrosion on-line measurement device of boiler tube Process of Chemical Cleaning according to claim 2, it is characterised in that: the gold
Belong to pipe other end end and is equipped with counterbalance valve.
4. the corrosion on-line measurement device of boiler tube Process of Chemical Cleaning according to claim 3, it is characterised in that: the gold
Belong to pipe outer wall and is wound with cooling tube.
5. the corrosion on-line measurement device of boiler tube Process of Chemical Cleaning according to claim 1, it is characterised in that: the ginseng
Conducting wire is respectively connected with than the electrode other end and ring electrode outer wall.
6. the corrosion on-line measurement device of boiler tube Process of Chemical Cleaning according to claim 1, it is characterised in that: the ring
Shape electrode and dead ring internal diameter match each other.
7. the corrosion on-line measurement device of boiler tube Process of Chemical Cleaning according to claim 1, it is characterised in that: described exhausted
Edge ring is made of polytetrafluoroethylene material.
8. a kind of measurement method of the corrosion on-line measurement device using boiler tube Process of Chemical Cleaning described in claim 5,
Be characterized in that: ring electrode is made by intercepting boiler tube to be cleaned in the first measuring device, and by the first measuring device and is cut
The boiler tube to be cleaned having no progeny connects, and the conducting wire in the first and second measuring device is connect with identical electrochemical measurement instrument respectively,
And the first and second measuring device is placed in identical cleaning environment；
The primary data for keeping the electrochemical measurement instrument connecting with the second measuring device in mind, the electricity to be connect with the first measuring device
Stop the cleaning of boiler tube to be cleaned after the data of chemical measurement instrument are identical as above-mentioned primary data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811374154.1A CN109238955A (en) | 2018-11-19 | 2018-11-19 | A kind of corrosion on-line measurement device and method of boiler tube Process of Chemical Cleaning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811374154.1A CN109238955A (en) | 2018-11-19 | 2018-11-19 | A kind of corrosion on-line measurement device and method of boiler tube Process of Chemical Cleaning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109238955A true CN109238955A (en) | 2019-01-18 |
Family
ID=65075078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811374154.1A Pending CN109238955A (en) | 2018-11-19 | 2018-11-19 | A kind of corrosion on-line measurement device and method of boiler tube Process of Chemical Cleaning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109238955A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113189167A (en) * | 2021-02-24 | 2021-07-30 | 中国核动力研究设计院 | Annular electrochemical sensor probe |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110060392A (en) * | 2009-11-30 | 2011-06-08 | 한국전력공사 | Test apparatus for removing scale in boiler tube |
| CN102560438A (en) * | 2012-01-18 | 2012-07-11 | 上海华力微电子有限公司 | Method for improving performance of plasma enhance chemical vapor deposition equipment |
| CN102721725A (en) * | 2012-06-04 | 2012-10-10 | 西安热工研究院有限公司 | Device and method for measuring corroding and cleaning effects on line in chemical cleaning process of power station boiler |
| CN107119265A (en) * | 2017-04-27 | 2017-09-01 | 武汉华星光电技术有限公司 | Chemical vapor deposition process chamber room and its clean endpoint monitoring method |
| CN206515282U (en) * | 2016-10-27 | 2017-09-22 | 中国神华能源股份有限公司 | On-line measurement device for Boiler Chemical system |
| CN209069805U (en) * | 2018-11-19 | 2019-07-05 | 国电南京电力试验研究有限公司 | A kind of corrosion on-line measurement device of boiler tube Process of Chemical Cleaning |
-
2018
- 2018-11-19 CN CN201811374154.1A patent/CN109238955A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110060392A (en) * | 2009-11-30 | 2011-06-08 | 한국전력공사 | Test apparatus for removing scale in boiler tube |
| CN102560438A (en) * | 2012-01-18 | 2012-07-11 | 上海华力微电子有限公司 | Method for improving performance of plasma enhance chemical vapor deposition equipment |
| CN102721725A (en) * | 2012-06-04 | 2012-10-10 | 西安热工研究院有限公司 | Device and method for measuring corroding and cleaning effects on line in chemical cleaning process of power station boiler |
| CN206515282U (en) * | 2016-10-27 | 2017-09-22 | 中国神华能源股份有限公司 | On-line measurement device for Boiler Chemical system |
| CN107119265A (en) * | 2017-04-27 | 2017-09-01 | 武汉华星光电技术有限公司 | Chemical vapor deposition process chamber room and its clean endpoint monitoring method |
| CN209069805U (en) * | 2018-11-19 | 2019-07-05 | 国电南京电力试验研究有限公司 | A kind of corrosion on-line measurement device of boiler tube Process of Chemical Cleaning |
Non-Patent Citations (1)
| Title |
|---|
| 王光信 等: "《有机电合成导论》", 化学工业出版社, pages: 58 - 61 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113189167A (en) * | 2021-02-24 | 2021-07-30 | 中国核动力研究设计院 | Annular electrochemical sensor probe |
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| CB02 | Change of applicant information |
Address after: 210046 fairyland Road, Qixia District, Nanjing, Jiangsu Province, No. 10 Applicant after: Guoneng Nanjing Electric Power Test Research Co.,Ltd. Address before: 210046 fairyland Road, Qixia District, Nanjing, Jiangsu Province, No. 10 Applicant before: GUODIAN NANJING ELECTRIC POWER TEST RESEARCH Co.,Ltd. |
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