CN108507937B - Detachable chain electrode - Google Patents
Detachable chain electrode Download PDFInfo
- Publication number
- CN108507937B CN108507937B CN201810588091.3A CN201810588091A CN108507937B CN 108507937 B CN108507937 B CN 108507937B CN 201810588091 A CN201810588091 A CN 201810588091A CN 108507937 B CN108507937 B CN 108507937B
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- pipe fitting
- electrode
- metal
- metal sheet
- detachable
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- 239000002184 metal Substances 0.000 claims abstract description 91
- 229910052751 metal Inorganic materials 0.000 claims abstract description 91
- 239000000178 monomer Substances 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 239000004020 conductor Substances 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 29
- 238000005260 corrosion Methods 0.000 abstract description 29
- 238000011160 research Methods 0.000 abstract description 8
- 241000668842 Lepidosaphes gloverii Species 0.000 abstract description 5
- 239000013535 sea water Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 4
- 238000000840 electrochemical analysis Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 229940099259 vaseline Drugs 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
- G01N17/006—Investigating resistance of materials to the weather, to corrosion, or to light of metals
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- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Ecology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
The invention relates to a detachable chain electrode. The electrode comprises a plurality of electrode monomers which are detachably connected through wires; the electrode unit comprises a first pipe fitting, a second pipe fitting, a metal sheet and a metal conductor; one end of the first pipe fitting is sealed through a baffle, the other end of the first pipe fitting is detachably connected with one end of the second pipe fitting, and the first pipe fitting is in sealing connection with the second pipe fitting; the metal sheet is connected with the pipe orifice at the other end of the second pipe fitting in a sealing way through the first connecting piece; an opening is formed in the first pipe fitting, and the lead penetrates into the opening and is connected with the metal sheet through a metal conductor; the wire is connected with the open hole in a sealing way through the second connecting piece. The invention can assemble a plurality of electrode monomers at will to form a chained electrode or an array electrode, thereby not only obtaining local metal corrosion information, but also simulating long-scale integral metal and obtaining corrosion information of the integral metal; in use, the electrode monomers can be disassembled, and the metal sheets are taken for research or replacement, so that the cost is saved.
Description
Technical Field
The invention relates to the technical field of metal corrosion monitoring and research, in particular to a detachable chain electrode.
Background
The interface areas of a plurality of two-phase media such as a sea water/atmosphere interface, a sea mud/sea water interface, a sea thermocline, a brine/petroleum interface in an oil storage tank and the like are areas with serious metal corrosion, complex metal corrosion mechanism and difficult metal corrosion protection.
The corrosion of the research interface area is the basis for metal corrosion protection, the corrosion information of the whole metal with a long scale is difficult to obtain by using the traditional small-size metal sample hanging research, the hanging, the investment and the technical difficulty are large by using the whole metal with a long scale, and the local metal corrosion information is difficult to obtain.
The existing chain type electrode is not detachable, the electrode is abandoned after being used once, manpower and material resources are wasted, meanwhile, the use of a metal corrosion research technology is limited, and the requirement of a large number of metal corrosion researches in an environment interface area is difficult to meet.
Disclosure of Invention
In order to overcome at least one defect in the prior art, the invention provides a detachable chain electrode, a plurality of electrode monomers can be assembled randomly to form a chain electrode or an array electrode, and the electrode monomers can be detached in use, so that a metal sheet can be conveniently taken for research.
In order to solve the technical problems, the invention adopts the following technical scheme: a detachable chained electrode comprises a plurality of electrode monomers, wherein the electrode monomers are detachably connected through wires; the electrode unit comprises a first pipe fitting, a second pipe fitting, a metal sheet and a metal conductor; one end of the first pipe fitting is sealed through a baffle, the other end of the first pipe fitting is detachably connected with one end of the second pipe fitting, and the first pipe fitting is in sealing connection with the second pipe fitting; the metal sheet is connected with the pipe orifice at the other end of the second pipe fitting in a sealing way through the first connecting piece; an opening is formed in the first pipe fitting, and the lead penetrates into the opening and is connected with the metal sheet through a metal conductor; the wire is connected with the open hole in a sealing way through the second connecting piece.
In the invention, the metal sheet is arranged in the electrode monomer, the metal sheet is connected with the lead through the metal conductor, one end of the electrode monomer is sealed through the baffle, the other end of the electrode monomer is provided with the metal sheet, the metal sheet is also in sealing connection with the second pipe fitting, in addition, the open hole is also sealed through the second connecting piece, so that the outside seawater, sea mud and other substances cannot enter the electrode monomer during testing, the lead is connected with the electrochemical tester during use, the electrode monomer is placed in the substances to be tested, one side of the metal sheet is connected with the outside, the seawater, sea mud and other corrosion metal sheets are used for monitoring the corrosion condition of the metal sheet in real time through the electrochemical tester; in addition, when the test is finished, the electrode monomer can be disassembled, the metal sheet is taken out, the appearance of the metal sheet is tested, and the corrosion condition of the metal sheet is obtained. According to the detachable chained electrode provided by the invention, the corrosion conditions of seawater to metals at different depths can be simulated and detected through the chained electrode, so that not only can local metal corrosion information be obtained, but also long-scale integral metal can be simulated and corrosion information of the integral metal can be obtained; in addition, the electrode can be used for analyzing metal corrosion by using an electrochemical analysis technology, can be used for measuring the local corrosion rate of metal by using a traditional weightlessness method, and can be used for analyzing metal corrosion by using a microscopic morphology analysis technology; in addition, the electrode monomer is detachable, and after the test is finished, the electrode monomer can be used continuously after the metal sheet is replaced, so that the cost is effectively saved.
Further, the plurality of electrode units are connected in series or in parallel through wires. The connection between the electrode monomers is detachable and can be assembled randomly according to the requirement.
Preferably, the metal conductor is a spring, one end of the spring is fixed on the baffle plate, and the other end of the spring is connected with the metal sheet. The spring has elasticity, when the first pipe fitting is connected with the second pipe fitting, one end of the spring is propped against the baffle plate, and the other end of the spring is subjected to the pressure exerted by the metal sheet, so that the spring can be tightly connected with the metal sheet all the time, and the accuracy of the test is improved; and be connected with the sheetmetal through the spring, when being connected second pipe fitting and first pipe fitting, maneuverability is stronger, can not lead to first pipe fitting and second pipe fitting to be unable effective connection because of the metal conductor position does not put the scheduling problem.
Preferably, the first connecting piece is a rubber ring,
further, a propping part is arranged in the pipe orifice at one end of the second pipe fitting connected with the metal sheet, the metal sheet is fixed on the propping part, rubber rings are arranged on two sides of the metal sheet, and the rubber rings are in sealing connection with the inner wall of the second pipe fitting. The metal sheet is arranged in the second pipe fitting and fixed on the supporting part, and the sealing connection between the metal sheet and the inner wall of the second pipe fitting is realized through the rubber ring, so that substances such as seawater and the like can not flow from the inside of the pipe orifice metal electrode unit of the second pipe fitting during testing.
Preferably, the second connector is a resin.
Preferably, the connection between the wire and the metal conductor in the first pipe is filled with resin. The open hole is sealed by using resin, and meanwhile, the first pipe fitting is filled with resin, so that the open hole position and the connection position of the lead and the metal lead are fully sealed, and the external matters are prevented from entering the electrode unit.
Preferably, the first pipe fitting is connected with the second pipe fitting through threads. Through threaded connection, simple structure, convenient operation, and can reach sealing connection's effect.
Compared with the prior art, the beneficial effects are that: according to the detachable chained electrode, the chained electrode or the array electrode can be formed by assembling the electrode monomers at will, so that local metal corrosion information can be obtained, long-scale integral metal can be simulated, corrosion information of the integral metal can be obtained, and the test diversity and accuracy are improved; in use, the electrode monomers can be disassembled, the metal sheets are taken for research or are replaced, and the cost is effectively saved.
Drawings
FIG. 1 is a cross-sectional view of an electrode cell of the present invention.
FIG. 2 is a schematic diagram of the overall structure of an electrode unit according to the present invention.
FIG. 3 is a schematic view of a first connection between electrode cells according to the present invention.
Fig. 4 is a schematic view of a second connection between electrode cells according to the present invention.
FIG. 5 is a graph of the corrosion current of electrodes at various locations in a simulated marine thermocline according to example 1 of the present invention.
FIG. 6 is a graph showing the corrosion rates of electrodes at different positions obtained by the weightless method in example 1 of the present invention.
FIG. 7 is a graph of galvanic current density between electrodes near the sea water/sea mud interface in example 2 of the present invention.
FIG. 8 is a graph of the microscopic morphology of electrodes at different positions obtained using a scanning electron microscope in example 2 of the present invention.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the invention; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationship described in the drawings are for illustrative purposes only and are not to be construed as limiting the invention.
Example 1:
as shown in fig. 1 to 4, a detachable chain electrode includes a plurality of electrode cells 1, the plurality of electrode cells 1 being detachably connected in series or in parallel by a wire 2; the electrode unit 1 comprises a first pipe fitting 11, a second pipe fitting 12, a metal sheet 13 and a spring; one end of the first pipe fitting 11 is sealed through a baffle 15, the other end of the first pipe fitting 11 is detachably connected with one end of the second pipe fitting 12, and the first pipe fitting 11 is in sealing connection with the second pipe fitting 12; the metal sheet 13 is connected with the pipe orifice at the other end of the second pipe fitting 12 in a sealing way through the first connecting piece; an opening 16 is arranged on the first pipe fitting 11, and the wire 2 penetrates through the opening 16 and is connected with the metal sheet 13 through the metal conductor 14; the wire 2 is connected with the opening 16 in a sealing manner by means of a second connection piece 17. One end of the spring is fixed on the baffle 15, and the other end is connected with the metal sheet 13. The spring has elasticity, when the first pipe fitting 11 is connected with the second pipe fitting 12, one end of the spring props against the baffle 15, and the other end is subjected to the pressure exerted by the metal sheet 13, so that the spring can be tightly connected with the metal sheet 13 all the time, and the accuracy of the test is improved; and the spring is connected with the metal sheet 13, so that the operability is strong when the second pipe fitting 12 is connected with the first pipe fitting 11, and the first pipe fitting 11 and the second pipe fitting 12 cannot be effectively connected because the position of the metal conductor 14 is not aligned and the like.
The lead 2 is transferred into the first pipe fitting 11 from the opening 16 and welded with the spring, the connecting position of the lead 2 of the first pipe fitting 11 and the opening 16 are filled with resin, so that one end of the first pipe fitting 11 is in a fully sealed state with the outside, the resin only fills part of the first pipe fitting 11, and most of the spring is left outside the resin; then the rubber ring is arranged at the abutting part 18 at the pipe orifice of the second pipe fitting 12, the metal sheet 13 is arranged on the rubber ring, and the rubber ring is arranged at the other side of the metal sheet 13, so that the pipe orifice at one end of the second pipe fitting 12 is sealed by the metal sheet 13, and liquid medium is prevented from entering; after the first pipe fitting 11 and the second pipe fitting 12 are connected through threads, the spring is pressed by the metal sheet 13, so that the spring and the metal sheet 13 can be tightly contacted together, and the threaded connection part of the first pipe fitting 11 and the second pipe fitting 12 can be sealed by means of vaseline, sealant and other substances. When the electrode is used, the first pipe fitting 11 and the second pipe fitting 12 can be unscrewed, and the metal sheet 13 can be taken out for replacement.
When assembling the plurality of electrode units 1, the plurality of metal electrodes may be fixed to the cable 3 and then the respective electrode units 1 may be connected by the lead wires 2.
Specific application
1. Corrosion problems of pipeline steel X70 in simulated marine thermocline were investigated using a detachable chained electrode. A detachable chain electrode as in fig. 3 or fig. 4 was fabricated. The corrosion currents of the electrodes at different locations of the simulated marine thermocline were obtained using electrochemical analysis means as shown in figure 5. The electrode is unscrewed, the circular metal sheet 13 is taken out, and the corrosion rate of the electrode at different positions is obtained by using a weightless method, as shown in fig. 6.
2. The corrosion problem of pipeline steel X70 at the sea water/sea mud interface was investigated using a detachable chained electrode. A detachable chain electrode as in fig. 3 or fig. 4 was fabricated. The galvanic current density between electrodes located near the sea water/sea mud interface was obtained by electrochemical analysis means as shown in fig. 7. The electrode is unscrewed, the circular metal sheet 13 is taken out, and the microscopic morphology of the electrode at different positions is obtained by using a scanning electron microscope, as shown in fig. 8.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (5)
1. The detachable chained electrode is characterized by comprising a plurality of electrode monomers (1), wherein the electrode monomers (1) are detachably connected through wires (2); the electrode unit (1) comprises a first pipe fitting (11), a second pipe fitting (12), a metal sheet (13) and a metal conductor (14); one end of the first pipe fitting (11) is sealed through a baffle (15), the other end of the first pipe fitting is detachably connected with one end of the second pipe fitting (12), and the first pipe fitting (11) is in sealing connection with the second pipe fitting (12); the metal sheet (13) is connected with the pipe orifice at the other end of the second pipe fitting (12) in a sealing way through a first connecting piece; an opening (16) is arranged on the first pipe fitting (11), and the lead (2) penetrates into the opening (16) and is connected with the metal sheet (13) through the metal conductor (14); the wire is connected with the open hole (16) in a sealing way through a second connecting piece (17); the electrode units (1) are connected in series or in parallel through wires; the metal conductor (14) is a spring, one end of the spring is fixed on the baffle (15), and the other end of the spring is connected with the metal sheet (13); the first connecting piece is a rubber ring; the pipe orifice of one end of the second pipe fitting (12) connected with the metal sheet (13) is internally provided with a supporting part (18), the metal sheet (13) is fixed on the supporting part (18), rubber rings are arranged on two sides of the metal sheet (13), and the rubber rings are in sealing connection with the inner wall of the second pipe fitting (12).
2. A detachable chained electrode according to claim 1, wherein the second connecting member (17) is a resin.
3. A detachable chained electrode according to claim 1, characterized in that the connection of the wire (2) with the metal conductor (14) in the first tube (11) is filled with resin.
4. A detachable chained electrode according to any one of claims 1 to 3, wherein the first tube (11) is screwed to the second tube (12).
5. A detachable chained electrode according to claim 4, wherein the first tube (11), the second tube (12) and the baffle (15) are all made of plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810588091.3A CN108507937B (en) | 2018-06-08 | 2018-06-08 | Detachable chain electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810588091.3A CN108507937B (en) | 2018-06-08 | 2018-06-08 | Detachable chain electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108507937A CN108507937A (en) | 2018-09-07 |
| CN108507937B true CN108507937B (en) | 2024-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810588091.3A Active CN108507937B (en) | 2018-06-08 | 2018-06-08 | Detachable chain electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108507937B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3632495A (en) * | 1969-06-02 | 1972-01-04 | Petrolite Corp | Corrosion test probe assembly |
| CN103558146A (en) * | 2013-11-20 | 2014-02-05 | 国家电网公司 | Multifunctional same-material three-electrode probe |
| CN103575643A (en) * | 2013-11-20 | 2014-02-12 | 国家电网公司 | Metal corrosion rate indication probe |
| CN104568733A (en) * | 2015-01-14 | 2015-04-29 | 天津大学 | Metal-corrosion electrochemical experimental device in flowing-corrosion medium |
| CN208459246U (en) * | 2018-06-08 | 2019-02-01 | 广东海洋大学 | A kind of detachable chain type electrode |
-
2018
- 2018-06-08 CN CN201810588091.3A patent/CN108507937B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3632495A (en) * | 1969-06-02 | 1972-01-04 | Petrolite Corp | Corrosion test probe assembly |
| CN103558146A (en) * | 2013-11-20 | 2014-02-05 | 国家电网公司 | Multifunctional same-material three-electrode probe |
| CN103575643A (en) * | 2013-11-20 | 2014-02-12 | 国家电网公司 | Metal corrosion rate indication probe |
| CN104568733A (en) * | 2015-01-14 | 2015-04-29 | 天津大学 | Metal-corrosion electrochemical experimental device in flowing-corrosion medium |
| CN208459246U (en) * | 2018-06-08 | 2019-02-01 | 广东海洋大学 | A kind of detachable chain type electrode |
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| Publication number | Publication date |
|---|---|
| CN108507937A (en) | 2018-09-07 |
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