CN110132834A - A kind of high temperature gas cooled reactor secondary circuit Dynamic Water chemical attack electrochemical research electrode system and test method - Google Patents
A kind of high temperature gas cooled reactor secondary circuit Dynamic Water chemical attack electrochemical research electrode system and test method Download PDFInfo
- Publication number
- CN110132834A CN110132834A CN201910460635.2A CN201910460635A CN110132834A CN 110132834 A CN110132834 A CN 110132834A CN 201910460635 A CN201910460635 A CN 201910460635A CN 110132834 A CN110132834 A CN 110132834A
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- high temperature
- inner hole
- gland
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 238000011160 research Methods 0.000 title claims abstract description 13
- 239000000126 substance Substances 0.000 title claims abstract description 11
- 238000010998 test method Methods 0.000 title claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 38
- 238000012360 testing method Methods 0.000 claims abstract description 31
- 210000004907 gland Anatomy 0.000 claims abstract description 19
- 230000007797 corrosion Effects 0.000 claims abstract description 15
- 238000005260 corrosion Methods 0.000 claims abstract description 15
- 230000005518 electrochemistry Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000003466 welding Methods 0.000 claims abstract description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- -1 polytetrafluoroethylene Polymers 0.000 claims description 5
- 238000000157 electrochemical-induced impedance spectroscopy Methods 0.000 claims description 4
- 230000010287 polarization Effects 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 2
- 238000005253 cladding Methods 0.000 abstract description 2
- 238000000840 electrochemical analysis Methods 0.000 abstract description 2
- 239000004020 conductor Substances 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical compound FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 1
- 238000011835 investigation 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
Abstract
A kind of high temperature gas cooled reactor secondary circuit Dynamic Water chemical attack electrochemical research electrode system and test method, including test chamber, the inlet and outlet of test chamber are attached by the pipeline of welding manner and negotiable high temperature, high-pressure medium；Test electrode is embedded into cylindrical electrode sealing shroud by way of interference fit, and electrode sealing shroud is embedded into the hole in gland later；Wire column passes through gland inner hole after polytetrafluoro heat-shrinkable T bush cladding, is electrically connected by screw thread and test electrode；Sealing element will be compressed to penetrate from gland inner hole, conductor rod is passed through from the inner hole for compressing sealing element, is compressed sealing element and is attached by screw thread and electrode sealing shroud；The hold-down bolt of clamp nut and gland outer wall is connected through a screw thread, the sealing by the extruding to sealing element is compressed, in test chamber between medium and gland, wire column.The present invention is according to the form of electrode, it is determined that electrochemical test method；The environment of 90 ° of media impingement situations of device analog, and corrosion electrochemistry research is carried out in simulated environment.
Description
Technical field
The present invention relates to investigation corrosion engineering device technique field, in particular to a kind of high temperature gas cooled reactor secondary circuit secondary circuit
Dynamic Water chemical attack electrochemical research electrode system and test method.
Background technique
For temperature gas cooled reactor steam generator inlet temperature at 200 DEG C~205 DEG C, steam generator entrance material is located at flowing
Accelerated corrosion sensitive temperature section.If Dynamic Water chemical attack control is improper, lead to the reduction of steam generator service life, prestige
Coerce the safe operation of high temperature gas cooled reactor.Corrosion electrochemistry is the reliable method of assessment material etching problem.It is directed to High Temperature Gas at present
The experimental study of cold dome secondary circuit steam generator Dynamic Water chemical attack problem not only lacks and realizes high temperature, high pressure, high flow rate
The testing equipment of environment, electrode system design matched with corrosion electrochemistry research method still have to be developed.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of high temperature gas cooled reactor secondary circuit water
Chemical attack electrochemical research electrode system and test method, having can carry out carrying out flow velocity accelerated corrosion research under dynamic condition
Purpose feature.
To achieve the goals above, the technical solution adopted by the present invention is that:
A kind of high temperature gas cooled reactor secondary circuit water chemistry corrosion electrochemistry Electrode system, including test chamber 8 and test electricity
The inlet and outlet of pole 7, test chamber 8 are attached by the pipeline of welding manner and negotiable high temperature, high pressure, high flow rate medium, are surveyed
It tries electrode 7 to be arranged in electrode sealing shroud 6, electrode sealing shroud 6 is embedded into the gland 5 with inner hole, and 5 inner hole of gland penetrates pressure
Tight seal 3 compresses sealing element 3 and is provided with inner hole, passes through wire column 1 and test in 5 inner hole of gland and compression 3 inner hole of sealing element
Electrode 7 is connected, and polytetrafluoro heat-shrinkable T bush is enclosed on the outside of the wire column 1, compresses the inner hole and 5 inner hole of gland of sealing element 3
In the same horizontal line, it compresses sealing element 3 to be attached by screw thread with electrode sealing shroud 6, compresses the not connected end of sealing element 3 and set
It is equipped with the hold-down bolt 4 and clamp nut 2 of the gland outer wall for squeezing it.
The test electrode 7 is embedded into electrode sealing shroud 6 by way of interference fit, the electrode sealing shroud
6 be cylindrical polytetrafluoroethylene (PTFE) material.
The wire column 1 is connected through a screw thread test electrode 7.
The compression sealing element 3 is polytetrafluoroethylene (PTFE) material.
It is connected through a screw thread between the hold-down bolt 4 and clamp nut 2.
A kind of test method of high temperature gas cooled reactor secondary circuit Dynamic Water chemical attack electrochemical research electrode system, test electricity
Pole 7 is arranged in parallel 2, after test electrode 7 installs, regulates in test chamber 8 after the conditions such as the temperature of medium, flow velocity, pressure,
Solution resistance is measured using Electrode with Electrochemical Impedance Spectroscopy, measures the resistance between two electrodes using linear polarization method again later
Value subtracts the resistance value of as two electrode surface film layers after solution resistance.
Beneficial effects of the present invention:
A kind of high temperature gas cooled reactor secondary circuit Dynamic Water chemical attack electrochemical research electrode system and test method are provided,
The present invention is compared to the prior art compared with flowing accelerated corrosion experimental study, and use under the conditions of analog high temperature high pressure and hig flow speed
Electrode with Electrochemical Impedance Spectroscopy and linear polarization method are combined, and realize the measurement of electrode surface film layer.
The present invention is according to the form of electrode, it is determined that electrochemical test method；90 ° of media impingement situations of the device analog
Environment, and in simulated environment carry out corrosion electrochemistry research.
Detailed description of the invention
Fig. 1 is apparatus of the present invention structure front view.
Fig. 2 is apparatus of the present invention structural side view
Fig. 3 is apparatus of the present invention structure top view.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
A kind of high temperature gas cooled reactor secondary circuit high flow rate water chemistry corrosion electrochemistry Electrode system as shown in Figure 1:, test
The inlet and outlet of chamber 8 are attached by the pipeline of welding manner and negotiable high temperature, high pressure, high flow rate medium, to realize cavity
Interior high temperature, high pressure, high flow rate media environment；Test electrode 7 is embedded into cylindrical poly- four by way of interference fit
In the electrode sealing shroud 6 of vinyl fluoride material, electrode sealing shroud 6 is embedded into the hole in gland 5 later；Wire column 1 is through poly- four
After fluorine heat-shrinkable T bush cladding, 5 inner hole of gland is passed through, is attached by screw thread and test electrode 7；By polytetrafluoroethylene (PTFE) material
It compresses sealing element 3 to penetrate from 5 inner hole of gland, wire column 1 is passed through from the inner hole for compressing sealing element 3, is compressed sealing element 3 and is passed through screw thread
It is attached with electrode sealing shroud 6；Clamp nut 2 and the hold-down bolt 4 of gland outer wall are connected through a screw thread, by close to compressing
The sealing in test chamber 8 between medium and gland 5, wire column 1 is realized in the extruding of sealing 3.
As shown in Fig. 2 Fig. 3: a kind of high temperature gas cooled reactor secondary circuit Dynamic Water chemical attack electrochemical research electrode system
And test method, test electrode are 2, after electrode installs, regulate the items such as the temperature of medium, flow velocity, pressure in test chamber 8
After part, solution resistance is measured using Electrode with Electrochemical Impedance Spectroscopy, is measured between two electrodes using linear polarization method again later
Resistance value subtracts the resistance value of as two electrode surface film layers after solution resistance.
Claims (6)
1. a kind of high temperature gas cooled reactor secondary circuit water chemistry corrosion electrochemistry Electrode system, which is characterized in that including test chamber
(8) and test electrode (7), the inlet and outlet of test chamber (8) pass through welding manner and negotiable high temperature, high pressure, high flow rate medium
Pipeline is attached, and test electrode (7) is arranged in electrode sealing shroud (6), and electrode sealing shroud (6) is embedded into the pressure with inner hole
It covers in (5), gland (5) inner hole, which penetrates, compresses sealing element (3), compresses sealing element (3) and is provided with inner hole, gland (5) inner hole and pressure
Wire column 1 is passed through in tight seal (3) inner hole to be connected with test electrode (7), is enclosed with polytetrafluoro on the outside of the wire column (1)
Heat-shrinkable T bush, the inner hole and gland (5) inner hole for compressing sealing element (3) in the same horizontal line, compress sealing element (3) and pass through screw thread
It is attached with electrode sealing shroud (6), compresses the pressure that sealing element (3) not connected end is provided with the gland outer wall for squeezing it
Tight bolt (4) and clamp nut (2).
2. a kind of high temperature gas cooled reactor secondary circuit water chemistry corrosion electrochemistry Electrode system according to claim 1,
It is characterized in that, the test electrode (7) is embedded into electrode sealing shroud (6) by way of interference fit, the electrode
Sealing shroud (6) is cylindrical polytetrafluoroethylene (PTFE) material.
3. a kind of high temperature gas cooled reactor secondary circuit water chemistry corrosion electrochemistry Electrode system according to claim 1,
It is characterized in that, the wire column (1) is connected through a screw thread test electrode (7).
4. a kind of high temperature gas cooled reactor secondary circuit water chemistry corrosion electrochemistry Electrode system according to claim 1,
It is characterized in that, the compression sealing element (3) is polytetrafluoroethylene (PTFE) material.
5. a kind of high temperature gas cooled reactor secondary circuit water chemistry corrosion electrochemistry Electrode system according to claim 1,
It is characterized in that, is connected through a screw thread between the hold-down bolt (4) and clamp nut (2).
6. a kind of test method of high temperature gas cooled reactor secondary circuit Dynamic Water chemical attack electrochemical research electrode system, feature exist
In test electrode (7) is arranged in parallel 2, after test electrode (7) installs, and regulates temperature, the stream of test chamber (8) interior medium
After the conditions such as speed, pressure, solution resistance is measured using Electrode with Electrochemical Impedance Spectroscopy, later again using linear polarization method measurement two
Resistance value between electrode subtracts the resistance value of as two electrode surface film layers after solution resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910460635.2A CN110132834B (en) | 2019-05-30 | 2019-05-30 | Electrochemical research electrode system for high-temperature gas cooled reactor two-loop dynamic water chemical corrosion and testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910460635.2A CN110132834B (en) | 2019-05-30 | 2019-05-30 | Electrochemical research electrode system for high-temperature gas cooled reactor two-loop dynamic water chemical corrosion and testing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110132834A true CN110132834A (en) | 2019-08-16 |
| CN110132834B CN110132834B (en) | 2024-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910460635.2A Active CN110132834B (en) | 2019-05-30 | 2019-05-30 | Electrochemical research electrode system for high-temperature gas cooled reactor two-loop dynamic water chemical corrosion and testing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111766194A (en) * | 2020-07-15 | 2020-10-13 | 中国核动力研究设计院 | Lead penetration piece for high-temperature and high-pressure electrochemical corrosion experiment and assembling method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994012862A1 (en) * | 1992-11-20 | 1994-06-09 | Westinghouse Electric Corporation | Apparatus and method for real time corrosion monitoring in high temperature systems |
| CN101520402A (en) * | 2009-02-24 | 2009-09-02 | 上海大学 | Experimental facility for testing electrochemical signals of various materials in high-temperature high-pressure environment |
| CN101900664A (en) * | 2010-08-04 | 2010-12-01 | 南京工业大学 | Vapour-liquid two-phase flow accelerated corrosion test device |
| CN102121896A (en) * | 2010-05-28 | 2011-07-13 | 中国海洋石油总公司 | Experimental device for jet etching simulation and electrochemical test of high-temperature high-pressure loop |
| CN105223128A (en) * | 2015-09-21 | 2016-01-06 | 东南大学 | The power station flowing accelerated corrosion simulated experiment piping installation of electrochemical measurement mode |
| CN109078931A (en) * | 2018-08-03 | 2018-12-25 | 西安热工研究院有限公司 | The dynamic simulation tester and application method of high temperature gas cooled reactor nuclear power unit secondary circuit chemical cleaning |
| CN210894044U (en) * | 2019-05-30 | 2020-06-30 | 华能山东石岛湾核电有限公司 | High-temperature gas cooled reactor two-loop dynamic water chemical corrosion electrochemical research electrode system |
-
2019
- 2019-05-30 CN CN201910460635.2A patent/CN110132834B/en active Active
Patent Citations (7)
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|---|---|---|---|---|
| WO1994012862A1 (en) * | 1992-11-20 | 1994-06-09 | Westinghouse Electric Corporation | Apparatus and method for real time corrosion monitoring in high temperature systems |
| CN101520402A (en) * | 2009-02-24 | 2009-09-02 | 上海大学 | Experimental facility for testing electrochemical signals of various materials in high-temperature high-pressure environment |
| CN102121896A (en) * | 2010-05-28 | 2011-07-13 | 中国海洋石油总公司 | Experimental device for jet etching simulation and electrochemical test of high-temperature high-pressure loop |
| CN101900664A (en) * | 2010-08-04 | 2010-12-01 | 南京工业大学 | Vapour-liquid two-phase flow accelerated corrosion test device |
| CN105223128A (en) * | 2015-09-21 | 2016-01-06 | 东南大学 | The power station flowing accelerated corrosion simulated experiment piping installation of electrochemical measurement mode |
| CN109078931A (en) * | 2018-08-03 | 2018-12-25 | 西安热工研究院有限公司 | The dynamic simulation tester and application method of high temperature gas cooled reactor nuclear power unit secondary circuit chemical cleaning |
| CN210894044U (en) * | 2019-05-30 | 2020-06-30 | 华能山东石岛湾核电有限公司 | High-temperature gas cooled reactor two-loop dynamic water chemical corrosion electrochemical research electrode system |
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| CN111766194A (en) * | 2020-07-15 | 2020-10-13 | 中国核动力研究设计院 | Lead penetration piece for high-temperature and high-pressure electrochemical corrosion experiment and assembling method thereof |
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| CN110132834B (en) | 2024-03-26 |
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