CN113155724A - Multifunctional coupon corrosion evaluation device - Google Patents
Multifunctional coupon corrosion evaluation device Download PDFInfo
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- CN113155724A CN113155724A CN202110466519.9A CN202110466519A CN113155724A CN 113155724 A CN113155724 A CN 113155724A CN 202110466519 A CN202110466519 A CN 202110466519A CN 113155724 A CN113155724 A CN 113155724A
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- 230000007797 corrosion Effects 0.000 title claims abstract description 80
- 238000005260 corrosion Methods 0.000 title claims abstract description 80
- 238000011156 evaluation Methods 0.000 title claims abstract description 17
- 238000002474 experimental method Methods 0.000 claims abstract description 76
- 238000005070 sampling Methods 0.000 claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims description 23
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- 238000004088 simulation Methods 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 24
- 239000012071 phase Substances 0.000 description 12
- 239000007791 liquid phase Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000012360 testing method Methods 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000840 electrochemical analysis Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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- 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
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- 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
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Abstract
The invention discloses a multifunctional coupon corrosion evaluation device, which comprises a bottle body and a bottle cap for opening and closing the bottle body, wherein a support is arranged in the bottle body, a first support table is arranged on the support, and a plurality of first grooves for horizontally placing coupons are symmetrically arranged on the inner side of the first support table in the width direction; the sampling tube can be used for sampling and analyzing the corrosive medium under the conditions of not influencing the experiment and keeping the sealing property of the bottle body; the inner heating sleeve can heat a corrosive medium, so that the accuracy of an experiment is ensured, and the real corrosion condition of the pipeline is accurately known; the invention makes up the defects of the traditional hanging piece mode, and the corrosion simulation result of the hanging piece is closer to the real corrosion conditions of the pipeline in the directions of six o 'clock at the bottom and twelve o' clock at the top by the method of horizontally placing the hanging piece.
Description
Technical Field
The invention relates to the technical field of natural gas corrosion and protection, in particular to a multifunctional coupon corrosion evaluation device.
Background
The mining process of the domestic acid gas field and shale gas field faces complex and harsh corrosive environment, the corrosion is an inevitable problem for the metal pipeline of the gas field, and a large amount of capital is invested every year for repairing and replacing the corroded metal pipeline. In order to research the corrosion problem of metal and the prevention and control measures thereof, a corrosion coupon simulation experiment and an electrochemical experiment are reliable research means. Compared with a high-pressure experiment, the corrosion coupon experiment and the electrochemical experiment carried out under the normal-pressure condition have the advantages of convenience in operation, low cost and high safety, and are widely used in the research field of corrosion and protection.
At present, the vertical coupon mode is usually adopted in the normal-pressure indoor coupon corrosion simulation experiment, but the corrosion behaviors of different parts of a pipeline in a gas field are different, the most serious liquid phase corrosion is generally generated in the six o 'clock direction at the lower side of the pipeline under the action of accumulated liquid, and the gas phase corrosion is generated in the twelve o' clock direction at the top of the pipeline due to the generation of condensed water, so the pipeline corrosion condition cannot be comprehensively reflected by the vertical coupon mode; secondly, in the normal-pressure hanging piece experiment, due to the limitation of a hanging part, only a single gas phase experiment or a single liquid phase experiment can be usually carried out in a group of experiments, the function is single, the experiment period is long, the working efficiency is low, and the cost of consumed manpower and material resources is high; in addition, the atmospheric corrosion coupon experiment and the electrochemical experiment can realize the temperature control only by means of a water bath device or an oil bath device, so that the occupied equipment resources are more, the equipment is expensive and the energy consumption is high; moreover, when the sampling is needed in the normal-pressure hanging piece experiment, the equipment must be opened for sampling again, so that the airtightness of the equipment is damaged, the smooth operation of the experiment is influenced, and the experiment error is caused.
Disclosure of Invention
The invention provides a multifunctional coupon corrosion evaluation device, which aims to solve the technical problems that the traditional normal-pressure corrosion coupon experiment cannot comprehensively reflect the corrosion condition of a pipeline, and has single function and high energy consumption.
The technical scheme adopted by the invention is as follows: the multifunctional hanging piece corrosion evaluation device comprises a bottle body and a bottle cap for opening and closing the bottle body, wherein a support is arranged in the bottle body, a first support platform is arranged on the support, and a plurality of first grooves for horizontally placing hanging pieces are symmetrically arranged on the inner side of the first support platform in the width direction; the bottle body is filled with corrosive medium, and the liquid level of the corrosive medium is higher than that of the first supporting platform. After the experiment medium and the material are determined, the hanging pieces are horizontally arranged in the grooves, the hanging pieces are arranged at intervals, gaps are reserved among the hanging pieces, then the bottle caps are screwed down, corrosive medium is injected into the bottle bodies, the liquid phase experiment of the hanging pieces can be carried out, and the corrosive medium is higher than the first supporting table, so that the hanging pieces are completely soaked in the corrosive medium. The bottle cap is connected with the bottle body through the bolt, so that the connection stability is ensured, and meanwhile, the air tightness is also ensured. The invention makes up the defects of the traditional hanging piece mode, and the corrosion simulation result of the hanging piece is closer to the real corrosion conditions of the pipeline in the directions of six o 'clock at the bottom and twelve o' clock at the top, namely closer to the real corrosion conditions of the accumulated liquid part at the bottom and the condensed liquid part at the top of the pipeline, by the method of horizontally placing the hanging piece.
Further, a second supporting table is arranged on the support, a plurality of second grooves used for horizontally placing hanging pieces are symmetrically arranged on the inner side of the second supporting table in the width direction, and the second supporting table is higher than the liquid level of the corrosive medium. Because the second supporting table is higher than the liquid level of the corrosive medium, the hanging pieces in the second grooves are used for gas phase experiments, namely the situation that the pipelines are subjected to gas phase corrosion by the water which is de-condensed can be accurately realized through the hanging pieces in the second grooves. The second support table is matched with the first support table, so that the universality and the functionality of the device are improved, the gas-phase corrosion experiment and the liquid-phase corrosion experiment can be simultaneously carried out in one device, the experiment period is shortened, the experiment cost is reduced, the direct comparison of gas-phase corrosion experiment results and liquid-phase corrosion experiment results in the same corrosion system is realized, and the experiment error is reduced.
Further, a sampling tube communicated with the inner cavity of the bottle body is arranged at a position, close to the bottom, of the side surface of the bottle body, and a sampling valve is arranged on the sampling tube. The sampling analysis of the corrosive medium can be carried out under the conditions that the experiment is not influenced and the bottle body is kept closed; meanwhile, the sampling tube can also play a role in regulating the liquid level of the corrosive medium. Before the experiment, when pouring into the corrosive medium into the bottle, if operating personnel error pours excessive corrosive medium into, then accessible sampling tube output part corrosive medium, and then plays the effect of adjusting the liquid level.
Further, a heating sleeve is arranged on the inner side of the bottle body, and a heating body is arranged in the heating sleeve. During the exploitation of a gas field, the different corrosive environments in the field have specific temperatures. Therefore, in order to improve the precision of the experiment and reduce the real corrosion condition of the pipeline in the gas field exploitation process to the maximum extent, the corrosion medium can be heated by the heating sleeve in the bottle body, the precision of the experiment is ensured, and the real corrosion condition of the pipeline is accurately known. The heating of the traditional water bath or oil bath device is replaced, the experimental equipment is simplified, the energy consumption is reduced, and the cost is reduced.
Further, the outside of bottle is provided with the insulation cover, plays thermal-insulated heat retaining effect, avoids ambient temperature to the influence of the internal corrosive medium of bottle, also avoids the thermal loss in the bottle simultaneously.
Furthermore, a thermometer extending into the corrosive medium is arranged on the bottle cap in a penetrating mode, so that experimenters can monitor the temperature change of the corrosive medium in the bottle body in real time conveniently.
Further, an air inlet pipe and an air outlet pipe are arranged on the bottle cap in a penetrating mode, corresponding valves are arranged on the air inlet pipe and the air outlet pipe, and the air inlet pipe extends into the corrosive medium. The air inlet pipe can be used for introducing inert gas into the bottle body to evacuate oxygen in the bottle body or reduce the oxygen content in the bottle body, so that the error of the oxygen to the experiment is reduced, and the accuracy of the experiment is ensured; in addition, the gas inlet pipe is also used for introducing a liquid corrosive medium and other gas components required by the experiment.
Further, the air inlet pipe, the air outlet pipe and the support are all made of glass. Avoiding the occurrence of galvanic corrosion of the hanging piece placed on the bracket and the bracket, and further influencing the accuracy of the experiment.
Furthermore, the air inlet pipe is arranged in the middle of the bottle cap, so that interference between the air inlet pipe and the support when the bottle cap is screwed is avoided.
Furthermore, a reference electrode, an auxiliary electrode and a working electrode which extend into a corrosive medium are arranged on the bottle cap in a penetrating manner, and an electrochemical experiment hanging piece is arranged at the end part of the working electrode. The reference electrode, the auxiliary electrode and the working electrode are used for electrochemical experiments of hanging pieces. The reference electrode, the auxiliary electrode and the working electrode are connected with the electrochemical workstation, the reference electrode and the auxiliary electrode form a loop in a corrosive medium, and the working electrode is used for hanging the hanging piece to perform an electrochemical experiment on the hanging piece. The invention can not only carry out the corrosion hanging sheet experiment of the hanging sheet, but also carry out the electrochemical experiment of the hanging sheet, has double functions, greatly simplifies the equipment, reduces the arrangement of the equipment, improves the test efficiency and reduces the experiment cost.
The invention has the beneficial effects that:
1. the method makes up the defects of the traditional hanging piece mode, and the corrosion simulation result of the hanging piece is closer to the real corrosion conditions of the pipeline in the directions of six o 'clock at the bottom and twelve o' clock at the top by a method for horizontally placing the hanging piece, namely closer to the real corrosion conditions of the accumulated liquid part at the bottom and the condensed liquid part at the top of the pipeline; the test rack is simple to install and convenient to use, and the test rack does not need to be hung when used for placing test pieces.
2. The invention can simultaneously carry out gas phase and liquid phase corrosion experiments in one device, thereby not only shortening the experimental period and reducing the experimental cost, but also realizing the direct comparison of the gas phase and liquid phase corrosion experimental results in the same corrosion system and reducing the experimental error.
3. The sampling tube provided by the invention can be used for sampling and analyzing the corrosive medium under the conditions that the experiment is not influenced and the sealing performance of the bottle body is kept, and can also play a role in regulating the liquid level of the corrosive medium.
4. In order to improve the precision of the experiment and reduce the real corrosion condition of the pipeline in the gas field exploitation process to the maximum extent, the corrosion medium can be heated by the heating sleeve in the bottle body, the precision of the experiment is ensured, and the real corrosion condition of the pipeline is accurately known; the heating of the traditional water bath or oil bath device is replaced, the experimental equipment is simplified, the energy consumption is reduced, and the cost is reduced.
5. The invention can not only carry out the corrosion hanging sheet experiment of the hanging sheet, but also carry out the electrochemical experiment of the hanging sheet, has double functions, greatly simplifies the equipment, reduces the arrangement of the equipment, improves the test efficiency and reduces the experiment cost.
Drawings
Fig. 1 is a schematic structural diagram of the first embodiment.
Fig. 2 is a schematic structural view of the stent.
Fig. 3 is a schematic structural diagram of the second embodiment.
Labeled as:
1. a bottle body; 2. a bottle cap; 3. a support; 4. etching the medium; 5. a sampling tube; 6. a sampling valve; 7. heating a jacket; 8. a heat-insulating layer; 9. a thermometer; 10. an air inlet pipe; 11. an outlet pipe; 12. a reference electrode; 13. an auxiliary electrode; 14. a working electrode; 15. electrochemical test hanging piece.
31. A first support table; 32. a second support table; 310. a first groove; 320. a second groove.
Detailed Description
In the description of the present invention, it should be noted that the terms "front", "upper", "lower", "left", "right", "vertical", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention is further described below with reference to the accompanying drawings.
Example one
Referring to fig. 1 and 2, the multifunctional coupon corrosion evaluation device of the invention comprises a bottle body 1 and a bottle cap 2 for opening and closing the bottle body, wherein a support 3 is arranged in the bottle body, a first support platform 31 is arranged on the support, and a plurality of first grooves 310 for horizontally placing coupons are symmetrically arranged on the inner side of the first support platform in the width direction; the bottle body is filled with a corrosive medium 4, and the liquid level of the corrosive medium is higher than that of the first supporting platform. The corrosion medium can be water extracted from the gas field, and the hanging pieces are made of the same material as the natural gas pipeline, so that the corrosion condition of the metal pipeline of the gas field can be accurately simulated. In with lacing film horizontal installation recess, the arrangement of lacing film interval formula has the clearance between the lacing film, screws up the bottle lid again and injects corrosion medium into the bottle and can carry out the liquid phase experiment of lacing film, and corrosion medium is higher than first supporting bench, makes the lacing film soak in corrosion medium completely. The bottle cap is connected with the bottle body through the bolt, so that the connection stability is ensured, and meanwhile, the air tightness is also ensured. The invention makes up the defects of the traditional hanging piece mode, and the corrosion simulation result of the hanging piece is closer to the real corrosion conditions of the pipeline in the directions of six o 'clock at the bottom and twelve o' clock at the top, namely closer to the real corrosion conditions of the accumulated liquid part at the bottom and the condensed liquid part at the top of the pipeline, by the method of horizontally placing the hanging piece.
Referring to fig. 1 and 2, in the present embodiment, a second support platform 32 is disposed on the support, a plurality of second grooves 320 for horizontally placing the hanging pieces are symmetrically disposed on the inner side of the second support platform in the width direction, and the second support platform is higher than the liquid level of the etching medium. Because the second supporting table is higher than the liquid level of the corrosive medium, the hanging pieces in the second grooves are used for gas phase experiments, namely the situation that the pipelines are subjected to gas phase corrosion by the water which is de-condensed can be accurately realized through the hanging pieces in the second grooves. The second support table is matched with the first support table, so that the universality and the functionality of the device are improved, the gas-phase corrosion experiment and the liquid-phase corrosion experiment can be simultaneously carried out in one device, the experiment period is shortened, the experiment cost is reduced, the direct comparison of gas-phase corrosion experiment results and liquid-phase corrosion experiment results in the same corrosion system is realized, and the experiment error is reduced.
Referring to fig. 1, in this embodiment, a sampling tube 5 is disposed on a side surface of the bottle body near the bottom of the bottle body and is communicated with an inner cavity of the bottle body, and a sampling valve 6 is disposed on the sampling tube. The sampling analysis of the corrosive medium can be carried out under the conditions that the experiment is not influenced and the bottle body is kept closed; meanwhile, the sampling tube can also play a role in regulating the liquid level of the corrosive medium. Before the experiment, when pouring into the corrosive medium into the bottle, if operating personnel error pours excessive corrosive medium into, then accessible sampling tube output part corrosive medium, and then plays the effect of adjusting the liquid level.
Referring to fig. 1, in the present embodiment, a heating jacket 7 is provided inside the bottle body, and a heating body is provided inside the heating jacket. The heating body can be one of an electric heating wire or an electric heating tube. During the exploitation of a gas field, the different corrosive environments in the field have specific temperatures. Therefore, in order to improve the precision of the experiment and reduce the real corrosion condition of the pipeline in the gas field exploitation process to the maximum extent, the corrosion medium can be heated by the heating sleeve in the bottle body, the precision of the experiment is ensured, and the real corrosion condition of the pipeline is accurately known. The heating of the traditional water bath or oil bath device is replaced, the experimental equipment is simplified, the energy consumption is reduced, and the cost is reduced.
Referring to fig. 1, this embodiment is provided with insulation cover 8 in the outside of bottle, plays thermal-insulated heat retaining effect, avoids ambient temperature to the influence of the internal corrosive medium of bottle, also avoids thermal loss in the bottle simultaneously.
Referring to fig. 1, in the present embodiment, a thermometer 9 extending into the corrosive medium is disposed on the bottle cap in a penetrating manner, so that an experimenter can monitor the temperature change of the corrosive medium in the bottle body in real time.
Referring to fig. 1, in the present embodiment, an air inlet pipe 10 and an air outlet pipe 11 are arranged on the bottle cap in a penetrating manner, corresponding valves are arranged on the air inlet pipe and the air outlet pipe, and the air inlet pipe extends into the corrosive medium. The air inlet pipe can be used for introducing inert gas into the bottle body to evacuate oxygen in the bottle body or reduce the oxygen content in the bottle body, so that the error of the oxygen to the experiment is reduced, and the accuracy of the experiment is ensured; in addition, the gas inlet pipe is also used for introducing a liquid corrosive medium and other gas components required by the experiment.
The air inlet pipe, the air outlet pipe and the support are all made of glass. Avoiding the occurrence of galvanic corrosion of the hanging piece placed on the bracket and the bracket, and further influencing the accuracy of the experiment.
Referring to fig. 1, the air inlet pipe of the present embodiment is disposed in the middle of the bottle cap to avoid interference between the air inlet pipe and the bracket when the bottle cap is screwed.
Example two
Referring to fig. 2, on the basis of the first embodiment, the reference electrode 12, the auxiliary electrode 13 and the working electrode 14 extending into the corrosive medium are arranged on the bottle cap in a penetrating manner, and the end of the working electrode is provided with an electrochemical experiment hanging piece 15. The reference electrode, the auxiliary electrode and the working electrode are used for electrochemical experiments of hanging pieces. The reference electrode, the auxiliary electrode and the working electrode are connected with the electrochemical workstation, the reference electrode and the auxiliary electrode form a loop in a corrosive medium, and the working electrode is used for hanging the hanging piece to perform an electrochemical experiment on the hanging piece. The invention can not only carry out the corrosion hanging sheet experiment of the hanging sheet, but also carry out the electrochemical experiment of the hanging sheet, has double functions, greatly simplifies the equipment, reduces the arrangement of the equipment, improves the test efficiency and reduces the experiment cost.
Electrochemical experimental method: inserting a reference electrode 12, an auxiliary electrode 13 and a working electrode 14 into a bottle body through a bottle cap, connecting an electrochemical experiment hanging piece 15 at the end part of the working electrode, screwing the bottle cap, injecting inert gas, liquid corrosive medium or other gas components required by an experiment into the bottle through an air inlet pipe according to requirements, achieving the required corrosion conditions, ensuring that the end parts of the reference electrode 12, the auxiliary electrode 13 and the working electrode 14 are immersed in the corrosive medium, and finally opening a heating sleeve to set the experiment temperature. And after the system is stable, connecting the reference electrode, the auxiliary electrode and the working electrode with an electrochemical workstation, and starting to test electrochemical parameters.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The multifunctional coupon corrosion evaluation device is characterized by comprising a bottle body (1) and a bottle cap (2) for opening and closing the bottle body, wherein a support (3) is arranged in the bottle body, a first support table (31) is arranged on the support, and a plurality of first grooves (310) for horizontally placing coupons are symmetrically arranged on the inner side of the first support table in the width direction; the bottle body is filled with corrosive medium (4), and the liquid level of the corrosive medium is higher than that of the first supporting platform.
2. The corrosion evaluation device of the multifunctional hanging piece according to claim 1, wherein a second support table (32) is arranged on the bracket, a plurality of second grooves (320) for horizontally placing the hanging piece are symmetrically arranged on the inner side of the second support table in the width direction, and the second support table is higher than the liquid level of the corrosion medium.
3. The multifunctional coupon corrosion evaluation device according to claim 1, wherein a sampling tube (5) communicated with the inner cavity of the bottle body is arranged at a position on the side surface of the bottle body close to the bottom, and a sampling valve (6) is arranged on the sampling tube.
4. The multifunctional coupon corrosion evaluation device according to claim 1, wherein a heating jacket (7) is arranged on the inner side of the bottle body, and a heating body is arranged in the heating jacket.
5. The multifunctional coupon corrosion evaluation device according to claim 4, wherein a thermal insulation sleeve (8) is arranged on the outer side of the bottle body.
6. The multi-functional coupon corrosion evaluation device of claim 4, wherein a thermometer (9) extending into the corrosive medium is disposed through said bottle cap.
7. The multifunctional coupon corrosion evaluation device according to claim 4, wherein an air inlet pipe (10) and an air outlet pipe (11) are arranged on the bottle cap in a penetrating manner, corresponding valves are arranged on the air inlet pipe and the air outlet pipe, and the air inlet pipe extends into the corrosive medium.
8. The multi-functional coupon corrosion evaluation device of claim 7, wherein said gas inlet tube, gas outlet tube and support are made of glass.
9. The multi-functional coupon corrosion evaluation device of claim 7, wherein said air inlet tube is disposed in the middle of the bottle cap.
10. The multifunctional coupon corrosion evaluation device according to claim 7, wherein a reference electrode (12), an auxiliary electrode (13) and a working electrode (14) extending into a corrosion medium are arranged on the bottle cap in a penetrating manner, and an electrochemical experiment coupon (15) is arranged at the end of the working electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110466519.9A CN113155724A (en) | 2021-04-28 | 2021-04-28 | Multifunctional coupon corrosion evaluation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110466519.9A CN113155724A (en) | 2021-04-28 | 2021-04-28 | Multifunctional coupon corrosion evaluation device |
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| CN113155724A true CN113155724A (en) | 2021-07-23 |
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| CN202110466519.9A Pending CN113155724A (en) | 2021-04-28 | 2021-04-28 | Multifunctional coupon corrosion evaluation device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130284597A1 (en) * | 2012-04-28 | 2013-10-31 | Nanjing University | Device and method for testing corrosion inhibitor |
| CN104749090A (en) * | 2015-03-19 | 2015-07-01 | 常州大学 | Experimental device for simulating corrosion in crude oil pipeline |
| CN107238566A (en) * | 2017-05-09 | 2017-10-10 | 常州大学 | The experimental provision corroded outside simulation pipeline |
| CN207318313U (en) * | 2017-09-13 | 2018-05-04 | 中国石油天然气集团公司 | Corrosion simulated experiment device |
| CN211741016U (en) * | 2020-02-04 | 2020-10-23 | 集美大学 | Test system for evaluating metal under deep sea low-temperature and low-oxygen conditions |
-
2021
- 2021-04-28 CN CN202110466519.9A patent/CN113155724A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130284597A1 (en) * | 2012-04-28 | 2013-10-31 | Nanjing University | Device and method for testing corrosion inhibitor |
| CN104749090A (en) * | 2015-03-19 | 2015-07-01 | 常州大学 | Experimental device for simulating corrosion in crude oil pipeline |
| CN107238566A (en) * | 2017-05-09 | 2017-10-10 | 常州大学 | The experimental provision corroded outside simulation pipeline |
| CN207318313U (en) * | 2017-09-13 | 2018-05-04 | 中国石油天然气集团公司 | Corrosion simulated experiment device |
| CN211741016U (en) * | 2020-02-04 | 2020-10-23 | 集美大学 | Test system for evaluating metal under deep sea low-temperature and low-oxygen conditions |
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Application publication date: 20210723 |