CN104931561B - It is a kind of to realize the electrochemical test experiment device of acoustic emission monitor(ing) under HTHP water environment - Google Patents
It is a kind of to realize the electrochemical test experiment device of acoustic emission monitor(ing) under HTHP water environment Download PDFInfo
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- CN104931561B CN104931561B CN201510236662.3A CN201510236662A CN104931561B CN 104931561 B CN104931561 B CN 104931561B CN 201510236662 A CN201510236662 A CN 201510236662A CN 104931561 B CN104931561 B CN 104931561B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000000840 electrochemical analysis Methods 0.000 title claims abstract description 24
- 238000002474 experimental method Methods 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 239000003292 glue Substances 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 229910002804 graphite Inorganic materials 0.000 claims description 5
- 239000010439 graphite Substances 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
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- 238000012360 testing method Methods 0.000 abstract description 20
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- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- -1 polytetrafluoroethylene Polymers 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 description 10
- 230000007797 corrosion Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 238000006056 electrooxidation reaction Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 239000007772 electrode material Substances 0.000 description 3
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- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
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- 238000010835 comparative analysis Methods 0.000 description 2
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- 229910045601 alloy Inorganic materials 0.000 description 1
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- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000005518 electrochemistry Effects 0.000 description 1
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Abstract
The electrochemical test experiment device of acoustic emission monitor(ing) under HTHP water environment can be realized the present invention relates to a kind of, including open-topped kettle, lower flange is provided with the top outer side wall of kettle, and be provided with the open top of kettle for by its closed upper flange, being fixed with the escape pipe run through, pressure gauge, three polyfluortetraethylene pipes, temperature sensor and air inlet pipe on upper flange；Three polytetrafluoroethylene (PTFE) tube portions are not fixed with reference electrode, to electrode, waveguide rod and working electrode；The top connecting acoustic emission sensor of waveguide rod, bottom connection working electrode, reference electrode, the signal output part to electrode and waveguide rod are connected to electrochemical workstation；The signal output part of acoustic emission sensor is additionally coupled to Acoustic radiating instrument.So as to realize electro-chemical test and acoustic emission test in HTHP water environment simultaneously, two methods have complementary advantages, not interfere with each other.
Description
Technical field
The present invention relates to field of non destructive testing, and in particular to a kind of to realize acoustic emission monitor(ing) under HTHP water environment
Electrochemical test experiment device.
Background technology
Nuclear power is a kind of energy of clean and effective, and greatly developing sustainable development of the nuclear power to Chinese national economy has great
Meaning.At present, China's nuclear power station mainly uses presurized water reactor.Because the main Service Environment of pressurized-water reactor nuclear power plant is high-temperature high pressure water
Environment (280-325 DEG C, 8-16MPa), thus the main nuclear power generating equipment such as pressure vessel, main pipeline, steam generator by
Serious electrochemical corrosion may occur for harsh working environment, construction material, and this safe operation to nuclear power station constitutes huge prestige
The side of body.Electrochemical corrosion behavior of the nuclear material in HTHP water environment is studied, to research corrosion mechanism, corrosion protection and material
It is all significant in terms of material selection.
Electro-chemical test can obtain nuclear material in HTHP water ring as the important means of testing of electrochemical corrosion
Corrosion kinetics related data in border, to understand and speculating that material corrosion mechanism provides important evidence.Acoustic emission conduct
A kind of non-destructive testing technology, the features such as detecting dynamic defect, real-time, continuous and on-line monitoring because of it, is suitable for long term monitoring
The corrosion behavior of material.By the analysis to acoustic emission signal and acoustic emission source, corrosion mechanism is better understood on.Therefore, will
Electro-chemical test and acoustic emission combine, and are monitored simultaneously using two kinds of monitoring technology in HTHP water environment, real
Now have complementary advantages, this research to corrosion behavior of the material in HTHP water environment and mechanism is very necessary.
The content of the invention
It is an object of the invention to overcome shortcoming present in above-mentioned prior art there is provided one kind to realize high-temperature high pressure water
The electrochemical test experiment device of acoustic emission monitor(ing) under environment, with the test accurate advantage of effect.
To achieve the above object, the present invention uses following technical scheme：Including open-topped kettle, outside the top of kettle
It is provided with and is provided with lower flange, and the open top of kettle for by its closed upper flange on the wall of side side, it is solid on upper flange
Surely there are the escape pipe run through, pressure gauge, three polyfluortetraethylene pipes, temperature sensor and air inlet pipe；
Reference electrode is respectively fixed with inside three described polyfluortetraethylene pipes, to electrode and waveguide rod；
The top connecting acoustic emission sensor of described waveguide rod, bottom connection working electrode；
Described reference electrode, the signal output part to electrode and waveguide rod are connected to electrochemical workstation；Sound emission is passed
The signal output part of sensor is additionally coupled to Acoustic radiating instrument.
Valve is respectively and fixedly provided with described escape pipe and air inlet pipe.
The length of described escape pipe is less than the length of air inlet pipe.
Preamplifier is provided between described acoustic emission sensor and Acoustic radiating instrument.
Fixed between described lower flange and upper flange through bolt and metallic graphite carbon sealing ring.
Described polyfluortetraethylene pipe and waveguide rod, reference electrode, to cementing through high-temp glue between electrode and working electrode
It is fixed.
Described waveguide rod it is identical with working electrode material and between to be screwed.
Couplant is scribbled on end face between described waveguide rod and acoustic emission sensor.
Described couplant is vacuum silicon grease or vaseline.
The present invention has following beneficial effect：Compare prior art, and the present invention includes open-topped kettle, kettle
Top outer side wall on be provided with and be provided with lower flange, and the open top of kettle for by its closed upper flange, on
The escape pipe run through, pressure gauge, three polyfluortetraethylene pipes, temperature sensor and air inlet pipe are fixed with flange；Three
Polytetrafluoroethylene (PTFE) tube portion is not fixed with reference electrode, to electrode, waveguide rod and working electrode；The top connection sound hair of waveguide rod
Sensor is penetrated, bottom connects working electrode, and reference electrode, the signal output part to electrode and waveguide rod are connected to electrochemical operation
Stand；The signal output part of acoustic emission sensor is additionally coupled to Acoustic radiating instrument.So as to realize in HTHP water environment simultaneously
Electro-chemical test and acoustic emission test, while obtaining electrochemical signals and acoustic emission signal.Two methods have complementary advantages, and do not do mutually
Disturb.By the comparative analysis to electrochemical signals and acoustic emission signal, to can preferably research material in HTHP water ring
Corrosion mechanism in border.And waveguide rod plays conductive lead wire in electro-chemical test, and waveguide is played in sound emission measurement
Effect, so as to reach while the effect of test.And ensureing temperature using insulation pipe insulation between device electrode and surrounding medium
On the premise of degree and compressive resistance, utilize the good insulating properties of polyfluortetraethylene pipe, it is to avoid electrode and other metal parts it
Between conductance have influence on the accuracy of electro-chemical test and acoustic emission test.
Further, due to being provided with preamplifier between acoustic emission sensor and Acoustic radiating instrument, so as to effectively keep away
The decay of signal is exempted from, it is ensured that the accuracy and reliability of test.
Further, because waveguide rod is identical with working electrode material, and it is connected through a screw thread, is not only convenient for installation and tears open
Unload, and signal attenuation can be reduced.
Brief description of the drawings
Fig. 1 is present apparatus structural representation.
Embodiment
Below in conjunction with the accompanying drawings, the present invention is described in further detail.
Referring to Fig. 1, the present invention includes being provided with lower flange 2 on open-topped kettle 1, the top outer side wall of kettle 1,
And be provided with the open top of kettle 1 for by its closed upper flange 3, the outlet run through to be fixed with upper flange 3
Pipe 5, pressure gauge 6, three polyfluortetraethylene pipes 15, temperature sensor 8 and air inlet pipe 9；Part in three polyfluortetraethylene pipes 15
Reference electrode 11 is not fixed with, to electrode 13 and waveguide rod 10；The top connecting acoustic emission sensor 7 of waveguide rod 10, bottom connects
Connect working electrode 12；Reference electrode 11, the signal output part to electrode 13 and waveguide rod 10 are connected to electrochemical workstation 17；Sound
The signal output part of emission sensor 7 is additionally coupled to Acoustic radiating instrument 18.Valve is respectively and fixedly provided with escape pipe 5 and air inlet pipe 9.Outlet
The length of pipe 5 is less than the length of air inlet pipe 9.Preamplifier 16 is provided between acoustic emission sensor 7 and Acoustic radiating instrument 18.Under
Fixed between flange 2 and upper flange 3 through bolt 4 and metallic graphite carbon sealing ring.Polyfluortetraethylene pipe 15 and waveguide rod 10, reference electricity
Pole 11, between electrode 13 and working electrode 12 through the cementing fixation of high-temp glue 14.Waveguide rod 10 is identical with the material of working electrode 12
And between to be screwed.Couplant is scribbled on end face between waveguide rod 10 and acoustic emission sensor 7.Couplant is vacuum silicon
Fat or vaseline.
As shown in Figure 1, a kind of electrochemical test dress that can realize acoustic emission monitor(ing) under HTHP water environment of the present invention
Put, mainly include：High-pressure kettle system, electrochemical testing device, the part of acoustic emission test device three.Wherein, high-pressure kettle system master
To include kettle 1, lower flange 2, upper flange 3, bolt 4, escape pipe 5, pressure gauge 6, temperature sensor 8, air inlet pipe 9；Electrochemistry
Test device mainly include waveguide rod 10, reference electrode 11, working electrode 12, to electrode 13, high-temp glue 14, polyfluortetraethylene pipe
15th, electrochemical workstation 17；Acoustic emission test device includes acoustic emission sensor 7, waveguide rod 10, preamplifier 16, sound hair
Penetrate instrument 18.
High-pressure kettle system, the autoclave has inner chamber, and autoclave uses the high 316LN stainless steels or Ni-based of corrosion resistant performance
High temperature alloy can be used for a long time as body material under HTHP water environment.The upper flange 3 and lower flange 2 and kettle
For same material, the upper flange 3 is sealed with the lower flange 2 by metallic graphite carbon sealing ring and bolt connection.
Air inlet pipe 9 and escape pipe 5, sealing are integrated in the upper flange 3, the turnover for inert gas.
Electrochemical testing device, working electrode 12, to electrode 13, reference electrode 11 constitute three-electrode system, the waveguide
Bar 10 is conveniently connected as the conductive lead wire of the working electrode 12 with electrochemical workstation 17.The waveguide rod 10, to electrode
13rd, reference electrode 11 is connected with told electrochemical workstation 17, for electro-chemical test.
The waveguide rod 10, working electrode 12, polyfluortetraethylene pipe 15 and environment are passed through to electrode 13, reference electrode 11 are situated between
Matter insulate, it is to avoid the conductance between electrode and other metal parts has influence on the accuracy of electro-chemical test and acoustic emission test.
The polyfluortetraethylene pipe 15 is tightly connected by sealing ring and clamp nut with the upper flange 3, passes through height between electrode
Warm glue 14 is sealed.
Acoustic emission sensor 7 is fixed in the waveguide rod 10, and the acoustic emission sensor 7 connects with preamplifier 16
Connect, the preamplifier 16 is connected with Acoustic radiating instrument 18, can synchronous acquisition working electrode electrification in HTHP water environment
Learn the acoustic emission signal of corrosion.
The waveguide rod 10 is cylindric, and the waveguide rod 10 is same material, waveguide rod 10 with the working electrode 12
Lower end machining internal thread, the upper end threading of working electrode 12, the two is connected through a screw thread.So both it had been easy to handling, again might be used
To ensure guided wave good between waveguide rod 10 and working electrode 12.
The upper end of waveguide rod 10 is firmly connected with the acoustic emission sensor 7 by fixing device, and waveguide rod is sent out with sound
Penetrate between sensor and scribble couplant (vaseline, vacuum silicon grease etc.), acoustic emission sensor 7 can receive the lower end work of waveguide rod 10
Make the acoustic emission signal of electrode electrochemical corrosion in HTHP water environment.The diameter of acoustic emission sensor 7 is not preferably greater than ripple
The diameter of guide rod 10, to ensure sensitivity of the acoustic emission sensor 7 for acoustic emission signal.
The specific steps of electrochemical test experiment device of acoustic emission monitor(ing) under HTHP water environment are realized with the present invention such as
Under：
1st, first waveguide rod 10 is connected through a screw thread with working electrode 12 before testing, the upper end of waveguide rod 10 is installed sound emission and passed
Sensor 7, sensor 7 is connected by preamplifier 16 with Acoustic radiating instrument 18.Do and distinguish on the diverse location of working electrode 12
Three disconnected lead experiments, the guided wave between checking working electrode 12 and acoustic emission sensor 7.Gained is tested if all of disconnected lead
Acoustic emission signal amplitude then proves that guided wave is good between working electrode 12 and acoustic emission sensor in more than 95dB.
2nd, by waveguide rod 10, reference electrode 11, working electrode 12, to electrode 13 be arranged on polyfluortetraethylene pipe in, make electricity
Pole is insulated with surrounding medium, is sealed the upper sealing of polyfluortetraethylene pipe and electrode and lower sealing using high-temp glue.
3rd, mounted electrode is connected with upper flange 3, passes through sealing ring and clamp nut fixing seal.Imported into kettle
Test(ing) medium, metallic graphite carbon sealing ring and bolt connection are passed through by upper flange and lower flange.Indifferent gas is passed through into kettle before experiment
Body, it is ensured that the sealing of high-pressure kettle system.
4th, by waveguide rod 10, reference electrode 11, be respectively connecting to electrochemical workstation 17 to electrode 13.
5th, sensor 7, preamplifier 16 are connected with Acoustic radiating instrument 18.
6th, electro-chemical test is carried out to working electrode 12 by electrochemical workstation 17 according to experimental design scheme, led to simultaneously
Cross the monitoring acoustic emission signal of Acoustic radiating instrument 18.
The present invention can realize electro-chemical test and acoustic emission test in HTHP water environment simultaneously, obtain simultaneously
Electrochemical signals and acoustic emission signal.Two methods have complementary advantages, and do not interfere with each other.By to electrochemical signals and acoustic emission signal
Comparative analysis, can more preferable corrosion mechanism of the research material in HTHP water environment.Waveguide rod is in electricity in the present invention
Play conductive lead wire in test chemical, and play waveguide in sound emission measurement, so as to reach while the effect of test.
Waveguide rod is identical with working electrode material in the present invention, and is connected through a screw thread, and is not only convenient for installing/dismounting, and can reduce letter
Number decay.Ensureing the premise of temperature and compressive resistance using insulation pipe insulation between electrode and surrounding medium in the present invention
Under, utilize the good insulating properties of polyfluortetraethylene pipe, it is to avoid the conductance between electrode and other metal parts has influence on electrification
Learn the accuracy of test and acoustic emission test.
Claims (7)
1. a kind of can realize the electrochemical test experiment device of acoustic emission monitor(ing) under HTHP water environment, it is characterised in that：Including top
It is provided with the kettle (1) of portion's opening, the top outer side wall of kettle (1) on lower flange (2), and the open top of kettle (1)
Be provided with for by its closed upper flange (3), be fixed with upper flange (3) escape pipe (5) run through, pressure gauge (6),
Three polyfluortetraethylene pipes (15), temperature sensor (8) and air inlet pipe (9)；
Reference electrode (11) is respectively fixed with inside three described polyfluortetraethylene pipes (15), to electrode (13) and waveguide rod
(10)；
The top connecting acoustic emission sensor (7) of described waveguide rod (10), bottom connection working electrode (12)；
Described reference electrode (11), the signal output part to electrode (13) and waveguide rod (10) are connected to electrochemical workstation
(17)；The signal output part of acoustic emission sensor (7) is additionally coupled to Acoustic radiating instrument (18)；
Described waveguide rod (10) it is identical with working electrode (12) material and between to be screwed；
Couplant is scribbled on end face between described waveguide rod (10) and acoustic emission sensor (7).
2. the electrochemical test experiment device of acoustic emission monitor(ing) under HTHP water environment can be realized according to a kind of described in claim 1,
It is characterized in that：Valve is respectively and fixedly provided with described escape pipe (5) and air inlet pipe (9).
3. the electrochemical test experiment device of acoustic emission monitor(ing) under HTHP water environment can be realized according to a kind of described in claim 1,
It is characterized in that：The length of described escape pipe (5) is less than the length of air inlet pipe (9).
4. the electrochemical test experiment device of acoustic emission monitor(ing) under HTHP water environment can be realized according to a kind of described in claim 1,
It is characterized in that：Preamplifier (16) is provided between described acoustic emission sensor (7) and Acoustic radiating instrument (18).
5. the electrochemical test experiment device of acoustic emission monitor(ing) under HTHP water environment can be realized according to a kind of described in claim 1,
It is characterized in that：Fixed between described lower flange (2) and upper flange (3) through bolt (4) and metallic graphite carbon sealing ring.
6. the electrochemical test experiment device of acoustic emission monitor(ing) under HTHP water environment can be realized according to a kind of described in claim 1,
It is characterized in that：Described polyfluortetraethylene pipe (15) is with waveguide rod (10), reference electrode (11), to electrode (13) and work electricity
Through high-temp glue (14) cementing fixation between pole (12).
7. the electrochemical test experiment device of acoustic emission monitor(ing) under HTHP water environment can be realized according to a kind of described in claim 1,
It is characterized in that：Described couplant is vacuum silicon grease or vaseline.
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| CN106525711B (en) * | 2016-12-19 | 2023-07-21 | 天津大学 | Clamp for detecting corrosion performance of material by acoustic emission and use method thereof |
| CN110196184A (en) * | 2019-06-19 | 2019-09-03 | 青岛科技大学 | A kind of online sound emission of bottom of storage tank slab spot corrosion-electrochemistry Collaborative experiment device |
| CN110680286A (en) * | 2019-10-29 | 2020-01-14 | 上海交通大学 | Portable uterine contraction monitor and auxiliary analysis and diagnosis method thereof |
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| CN1664559A (en) * | 2005-03-25 | 2005-09-07 | 北京科技大学 | Dynamic high-temperature and pressure electro-chemical measurement experimental device |
| CN102288492A (en) * | 2011-07-01 | 2011-12-21 | 中国科学院金属研究所 | High-temperature and high-pressure circulating water constant-load extension experimental device with acoustic emission testing function |
| CN103226091A (en) * | 2013-04-12 | 2013-07-31 | 中国石油天然气集团公司 | High temperature high pressure acoustic emission electrochemistry simulation experiment apparatus capable of loading stress |
| CN203929593U (en) * | 2014-06-18 | 2014-11-05 | 西安交通大学 | A kind of high-temperature high-pressure apparatus material corrosion comprehensive study experiment table reactor |
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| JP5898595B2 (en) * | 2012-09-07 | 2016-04-06 | 日立Ｇｅニュークリア・エナジー株式会社 | Corrosion potential sensor |
| WO2014106078A2 (en) * | 2012-12-28 | 2014-07-03 | Exxonmobil Research And Engineering Company | Instruments for monitoring electrostatic phenomena in reactors |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1664559A (en) * | 2005-03-25 | 2005-09-07 | 北京科技大学 | Dynamic high-temperature and pressure electro-chemical measurement experimental device |
| CN102288492A (en) * | 2011-07-01 | 2011-12-21 | 中国科学院金属研究所 | High-temperature and high-pressure circulating water constant-load extension experimental device with acoustic emission testing function |
| CN103226091A (en) * | 2013-04-12 | 2013-07-31 | 中国石油天然气集团公司 | High temperature high pressure acoustic emission electrochemistry simulation experiment apparatus capable of loading stress |
| CN203929593U (en) * | 2014-06-18 | 2014-11-05 | 西安交通大学 | A kind of high-temperature high-pressure apparatus material corrosion comprehensive study experiment table reactor |
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