CN109208009A - A kind of pipeline corrosion protection system of metro area - Google Patents

A kind of pipeline corrosion protection system of metro area Download PDF

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Publication number
CN109208009A
CN109208009A CN201811123821.9A CN201811123821A CN109208009A CN 109208009 A CN109208009 A CN 109208009A CN 201811123821 A CN201811123821 A CN 201811123821A CN 109208009 A CN109208009 A CN 109208009A
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CN
China
Prior art keywords
pipeline
corrosion
parts
potentiostat
measuring instrument
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201811123821.9A
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Chinese (zh)
Inventor
赵海阳
刘建
席志强
邵浩冉
王现伟
孟凯
董晴
王超
万如刚
夏波
吕继文
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Jiangsu Qingyuan Pipeline Technology Co Ltd
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Jiangsu Qingyuan Pipeline Technology Co Ltd
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Application filed by Jiangsu Qingyuan Pipeline Technology Co Ltd filed Critical Jiangsu Qingyuan Pipeline Technology Co Ltd
Priority to CN201811123821.9A priority Critical patent/CN109208009A/en
Publication of CN109208009A publication Critical patent/CN109208009A/en
Withdrawn legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
    • C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
    • C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
    • C23F13/22—Monitoring arrangements therefor
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08—Anti-corrosive paints
    • C09D5/10—Anti-corrosive paints containing metal dust
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/63—Additives non-macromolecular organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/65—Additives macromolecular
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
    • C23F13/04—Controlling or regulating desired parameters
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
    • C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
    • C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
    • C23F13/10—Electrodes characterised by the structure
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
    • C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
    • C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
    • C23F13/20—Conducting electric current to electrodes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C08K2003/0862—Nickel
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/18—Applications used for pipes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F2213/00—Aspects of inhibiting corrosion of metals by anodic or cathodic protection
    • C23F2213/30—Anodic or cathodic protection specially adapted for a specific object
    • C23F2213/32—Pipes

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Prevention Of Electric Corrosion (AREA)

Abstract

The invention patent discloses a kind of pipeline corrosion protection system of metro area; it include: pipeline, reference electrode, annular electrode, corrosion-resistant coating, protective layer, potentiostat, impressed current anode, measuring instrument, signal converyer, control room, specific implementation method of the present invention includes: line treatment, anticorrosion with painting erosion layer, setting protective layer, installation reference electrode, installation annular electrode, equipment connects, system uses.The present invention researches and develops corresponding anticorrosive coating according to specific environment situation, with strong points therefore antiseptic property is high, measuring instrument is more convenient effective by improving measurement, and multistage pipeline can be monitored, transmit signal with Wi-Fi, provide it is a kind of for electrochemical corrosion, antiseptic property is good, high safety and reliability, the pipeline corrosion protection system of construction technology metro area that is easy, at low cost, can carrying out corrosive pipeline monitoring.

Description

A kind of pipeline corrosion protection system of metro area
Technical field
The present invention relates to the pipeline corrosion protection system regions in pipeline corrosion protection field more particularly to metro area.
Background technique
Currently, best means of transportation of the pipeline as long-distance transportation liquids and gases, in natural gas, stone Extremely wide application is obtained in the transport of the goods and materials such as oil, heating, it has also become essential a part in transportation system, pipe Road conveys compared with other means of transportation such as highway transportation, railway transportation, has that freight volume is big, transportation cost is low, transportational process In continuous reliable, energy consumption less, the advantages such as construction cost is low, so that its transport performance is far surpassed other means of transportation, become and transport over long distances Gas transmission, liquid main way.
Although pipeline transportation has many advantages, the preferred means of transportation of long-distance sand transport is become, there is also some Disadvantage transports pipeline used and is embedded in underground mostly, but underground environment is more complicated, containing substances such as acid-alkali salts, and in pipeline Transport goods also there is certain corrosivity so that can all be corroded inside and outside pipeline, once and pipeline by heavy corrosion extremely Perforation, the interior gas transported or liquid will be revealed, so that material damage, pollutes environment, if the goods and materials transported are natural The dangerous goods such as gas, it is also possible to cause explosion, cause bigger casualty loss.
For the appearance for avoiding or reducing corrosive pipeline, research in terms of existing many pipeline corrosion protections, and achieve certain Achievement, measures or the device of some prevention corrosive pipelines are obtained, such as in pipe surface anticorrosion with painting coating, using sacrificing sun Pole Protection Code protective conduit etc., achieves certain effect, but cause corrosive pipeline factor be it is various, microorganism, acid, Alkali, salt, moisture etc. lead to the corrosion of pipeline, and it is rotten that corrosive pipeline is also classified into oxygen uptake burn into sulfur dioxide corrosion, hydrogen sulfide Multiple types such as erosion, bacterial corrosion, electrochemical corrosion cannot be prevented using unified method.
Pipeline will also pass through urban district sometimes, and people's lives for convenience, and also there are many for conveying object in urban district The pipeline of money, these be arranged in urban district pipeline some between rail and the earth can be conductive, part across metro area Thus electric current can leak into the earth, form stray electrical current in the earth, and these stray electrical currents are when flowing through pipeline, on the one hand can be with Cathodic protection is provided for section of tubing, another part pipeline is in anode in this stray electrical current circuit, it may occur that electrochemistry Corrosion, and corrode acutely, corrosion rate is even up to 1.1mm/, it is therefore necessary to be prevented for the pipeline of metro area Corruption avoids it that accident occurs because of corrosion failure.
Summary of the invention
Present invention aim to address the pipelines for being located at metro area, and play occurs because subway leaks into the stray electrical current of the earth The problem of strong electrochemical corrosion, provide it is a kind of for electrochemical corrosion, antiseptic property is good, high safety and reliability, construction work The pipeline corrosion protection system of the metro area easy, at low cost, that corrosive pipeline monitoring can be carried out of skill.
A kind of the technical solution adopted in the present invention: pipeline corrosion protection system of metro area, comprising: pipeline, reference electrode, Annular electrode, corrosion-resistant coating, protective layer, potentiostat, impressed current anode, measuring instrument, signal converyer, control room, the reference Electrode is located at pipe surface, directly and tube contacts；The annular electrode is located on the surface of pipe ends, directly connects with pipeline Touching；The corrosion-resistant coating is applied to pipe surface by anticorrosive paint and constitutes, anticorrosive paint ingredient are as follows: 3 parts of silane coupling agent, unsaturation 24 parts of resin, 16 parts of nickel alloy powder wash 5 parts of flat agent, 8 parts of rust resisting pigment, 20 parts of polyamide, 8 parts of titanium dioxide, preservative 1 Part, 25 parts of modified epoxy, 5 parts of diethylenetriamine, 5 parts of propylene glycol, 3 parts of zirconium oxide, 15 parts of gum rosin, propylene glycol monomethyl ether vinegar 10 parts of acid esters, 5 parts of p-methyl benzenesulfonic acid, 2.5 parts of barium sulfate；The protective layer is wrapped on pipeline, and it is outer and tight to be located at corrosion-resistant coating It is attached on corrosion-resistant coating, for flexibility, prevents mechanical shock and collision from damaging to pipeline；The potentiostat cathode and pipeline On reference electrode be connected, the potentiostat anode is connected with impressed current anode, and the potentiostat can exist as the case may be Simultaneously adjusting strength size is switched between constant pressure and constant current, to ensure pipeline current potential in the range of being conducive to anti-corrosion；Institute It states measuring instrument to be connected with annular electrode, the measuring instrument is ohm measurement table by transformation, and measuring instrument has two or more Binding post, therefore can be connected with two or more annular electrode, measure the resistance value of pipeline between any two annular electrode；It is described Signal converyer is connected with measuring instrument, potentiostat respectively, and the two signal and working condition are transmitted in the form of wireless signal Measuring instrument and potentiostat are passed to control room, and by the instruction of control room；The control room and signal converyer pass through nothing Gauze network is connected, and the control room receives the feedback signal that signal converyer transmits, and issues command signal.
A kind of specific anti-corrosion method of the pipeline corrosion protection system of metro area of the present invention is as follows:
(1) line treatment: integrally handling pipeline, disposes the pipeline rust generated by the condition transported, stored Mark, dust correlation sundries；
(2) anticorrosion with painting loses layer: preparing anticorrosive coating according to each component ratio, is sprayed on pipe surface, is formed Corrosion-resistant coating；
(3) protective layer is set: protective layer being wrapped in outside pipeline, is tightly attached on corrosion-resistant coating；
(4) reference electrode is installed: outside pipeline, the removing of partial region is carried out to protective layer and corrosion-resistant coating, is produced Hole needed for installing reference electrode installs reference electrode, and fills the gap around reference electrode；
(5) annular electrode is installed: needing to install the position of annular electrode in pipe ends, to protective layer and corrosion-resistant coating Annular removing is carried out, the position of installation annular electrode is produced, then annular electrode is installed, and fill the seam of annular surrounding them Gap；
(6) equipment connects: reference electrode is connected with potentiostat cathode, impressed current anode is connected with potentiostat anode, Ring electrode binding post corresponding to measuring instrument is connected, signal converyer is connected with potentiostat, measuring instrument, control room and letter Number converyer establishes connection by wireless network；
(7) system uses: automatically determining out the electricity of the pipeline between any two annular electrode by measuring instrument and annular electrode It hinders and result is sent to control room by signal converyer, the staff of control room judges pipeline according to the resistance value of pipeline State, and staff can be assigned by control room, by the transmitting instruction of signal converyer, and adjustment can be controlled by instructing Potentiostat working condition can also set potentiostat to adjust automatically working condition, voluntarily as needed by potentiostat Its output voltage or electric current are adjusted, specified canal electrical resistance is measured also by instruction control measuring instrument, is transmitted according to signal converyer Information, if discovery canal electrical resistance value and normal value deviation it is larger, illustrate that pipeline is corroded, staff can be according to annular electro The corresponding relationship of pole and pipeline finds out corresponding pipeline, and maintenance and inspection of sending someone.
Beneficial effects of the present invention: (1) according to practical pipeline local environment, special anticorrosive paint, so that anticorrosive property More preferably；(2) measuring instrument can measure more piece pipeline by improving, and more piece pipeline only needs a measuring instrument, save the cost, Convenient for operational administrative；(3) measuring instrument and ring electrode can monitor the resistance of any pipeline, and then judge its corrosion condition, realize To the real-time monitoring of corrosive pipeline；(4) signal is transmitted with wireless network, can monitors the work of whole system, save the cost, and It is convenient to transmit, easy construction, convenient for later period system maintenance and management.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is measuring instrument connection and panel schematic diagram.
In figure: 1-pipeline, 2-reference electrodes, 3-annular electrodes, 4-corrosion-resistant coatings, 5-protective layers, 6-constant potentials Instrument, 7-impressed current anodes, 8-measuring instruments, 9-signal converyers, 10-control rooms.
Specific embodiment:
The present invention is described in detail with specific example with reference to the accompanying drawing.
As shown, the inventive system comprises: pipeline (1), reference electrode (2), annular electrode (3), corrosion-resistant coating (4), protective layer (5), potentiostat (6), impressed current anode (7), measuring instrument (8), signal converyer (9), control room (10), it is described Reference electrode (2) is located at pipeline (1) surface, directly contacts with pipeline (1)；The annular electrode (3) is located at pipeline (1) both ends On surface, directly contacted with pipeline (1)；The corrosion-resistant coating (4) is applied to pipeline (1) surface by anticorrosive paint and constitutes, and anti-corrosion applies Expect ingredient are as follows: 3 parts of silane coupling agent, 16 parts of nickel alloy powder, washes 5 parts of flat agent, 8 parts of rust resisting pigment, polyamides at 24 parts of unsaturated-resin 20 parts of polyimide resin, 8 parts of titanium dioxide, 1 part of preservative, 25 parts of modified epoxy, 5 parts of diethylenetriamine, 5 parts of propylene glycol, oxidation 3 parts of zirconium, 15 parts of gum rosin, 10 parts of propylene glycol methyl ether acetate, 5 parts of p-methyl benzenesulfonic acid, 2.5 parts of barium sulfate, from advancing when use Row preparation reuses；The protective layer (5) is wrapped on pipeline (1), is located at corrosion-resistant coating (4) outside and is tightly attached to corrosion-resistant coating (4) on, for flexibility, prevent mechanical shock and collision from damaging to pipeline；Potentiostat (6) cathode and reference electrode (2) it is connected, potentiostat (6) anode is extremely connected with positive (7) are assisted, and the potentiostat (6) can exist as the case may be Simultaneously adjusting strength size is switched between constant pressure and constant current, to ensure pipeline (1) current potential in the range of being conducive to anti-corrosion； The measuring instrument (8) is connected with annular electrode (3), and the measuring instrument (8) is ohm measurement table by transformation, measuring instrument (8) It with two or more binding post, therefore can be connected with two or more annular electrode (3), measure any two annular electrode (3) Between pipeline (1) resistance value；The signal converyer (9) is connected with measuring instrument (8), potentiostat (6) respectively, and the two is believed Number and working condition passed in the form of wireless signal control room (10), and the instruction of control room (10) is passed into measuring instrument (8) and potentiostat (6)；The control room (10) is connected with signal converyer (9) by wireless network, the control room (10) The feedback signal that signal converyer (9) are transmitted is received, command signal is issued.
A kind of specific anti-corrosion method of pipeline corrosion protection system of metro area of the present invention is implemented as follows:
(1) pipeline (1) is handled: integrally being handled pipeline (1), is disposed the rust generated by the condition transported, stored Mark, dust correlation sundries；
(2) anticorrosion with painting erosion layer (4): anticorrosive coating is prepared according to each component ratio, is sprayed on pipeline (1) table Face is formed corrosion-resistant coating (4)；
(3) protective layer (5) are set: protective layer (5) being wrapped in pipeline (1) outside, is tightly attached on corrosion-resistant coating (4)；
(4) install reference electrode (2): pipeline (1) outside, to protective layer (5) and corrosion-resistant coating (4) progress partial region Removing, hole needed for producing installation reference electrode (2) is installed reference electrode (2), and is filled around reference electrode (2) Gap；
(5) annular electrode (3) are installed: need to install the position of annular electrode (3) at pipeline (1) both ends, to protective layer (5) and corrosion-resistant coating (4) carries out annular removing, produces the position of installation annular electrode (3), then installs annular electrode (3), And fill the gap around annular electrode (3)；
(6) equipment connects: reference electrode (2) is connected with potentiostat (6) cathode, impressed current anode (7) and potentiostat (6) anode is connected, and ring electrode (3) binding post corresponding to measuring instrument (8) is connected, by signal converyer (9) and potentiostat (6), measuring instrument (8) is connected, and control room (10) establishes connection by wireless network with signal converyer (9)；
(7) system uses: by measuring instrument (8) and annular electrode (3) automatically determine out any two annular electrode (3) it Between pipeline (1) resistance and result is sent to control room (10) by signal converyer (9), the staff of control room (10) Pipeline (1) state is judged according to the resistance value of pipeline (1), and staff can be assigned by control room (10), pass through signal Converyer (9) transmitting instruction, adjustment potentiostat (6) working condition can be controlled by instructing, can also set potentiostat (6) It is set to adjust automatically working condition, its output voltage or electric current are voluntarily adjusted by potentiostat (6) as needed, also by instruction It controls measuring instrument (8) and measures specified pipeline (1) resistance, according to the information that signal converyer (9) transmits, if discovery pipeline (1) electricity Resistance value and normal value deviation are larger, then illustrate that pipeline (1) is corroded, and staff can be according to annular electrode (3) and pipeline (1) Corresponding relationship is found out corresponding pipeline (1), and maintenance and inspection of sending someone.

Claims (6)

1. a kind of pipeline corrosion protection system of metro area, comprising: pipeline (1), reference electrode (2), annular electrode (3), anticorrosion Layer (4), protective layer (5), potentiostat (6), impressed current anode (7), measuring instrument (8), signal converyer (9), control room (10), Be characterized in that: the reference electrode (2) is located at pipeline (1) surface, directly contacts with pipeline (1)；The annular electrode (3) is located at On the surface at pipeline (1) both ends, directly contacted with pipeline (1)；The corrosion-resistant coating (4) is applied to pipe surface；The protective layer (5) it is wrapped on pipeline (1), is located at corrosion-resistant coating (4) outside and is tightly attached on corrosion-resistant coating (4)；Potentiostat (6) cathode It is connected with reference electrode (2), potentiostat (6) anode is extremely connected with positive (7) are assisted.
2. a kind of pipeline corrosion protection system of metro area according to claim 1, it is characterised in that: the corrosion-resistant coating (4) pipeline (1) surface, ingredient are applied to are as follows: 3 parts of silane coupling agent, 16 parts of nickel alloy powder, washes flat agent 5 at 24 parts of unsaturated-resin Part, 8 parts of rust resisting pigment, 20 parts of polyamide, 8 parts of titanium dioxide, 1 part of preservative, 25 parts of modified epoxy, diethylenetriamine 5 parts, 5 parts of propylene glycol, 3 parts of zirconium oxide, 15 parts of gum rosin, 10 parts of propylene glycol methyl ether acetate, 5 parts of p-methyl benzenesulfonic acid, barium sulfate 2.5 part.
3. a kind of pipeline corrosion protection system of metro area according to claim 1, it is characterised in that: the measuring instrument (8) Table is measured for ohm by transformation, there is two or more binding post, can be connected with two or more annular electrode (3).
4. a kind of pipeline corrosion protection system of metro area according to claim 1, it is characterised in that: the signal converyer (9) it is connected respectively with measuring instrument (8), potentiostat (6), the signal converyer (9) is in the form of wireless network and control room (10) it connects.
5. a kind of pipeline corrosion protection system of metro area according to claim 1, it is characterised in that: the control room (10) It is connected with signal converyer (9) by wireless network.
6. a kind of pipeline corrosion protection system of metro area according to claim 1, it is characterised in that: specific preserving method Steps are as follows:
(1) pipeline (1) is handled: pipeline (1) is integrally handled, dispose rusty stain because the condition transporting, store generates, Dust correlation sundries；
(2) anticorrosion with painting erosion layer (4): anticorrosive coating is prepared according to each component ratio, is sprayed on pipeline (1) surface, shape At corrosion-resistant coating (4)；
(3) protective layer (5) are set: protective layer (5) being wrapped in pipeline (1) outside, is tightly attached on corrosion-resistant coating (4)；
(4) install reference electrode (2): pipeline (1) outside, to protective layer (5) and corrosion-resistant coating (4) progress partial region stripping From hole needed for producing installation reference electrode (2) is installed reference electrode (2), and fills the seam around reference electrode (2) Gap；
(5) annular electrode (3) are installed: needing to install the position of annular electrode (3) at pipeline (1) both ends, to protective layer (5) and Corrosion-resistant coating (4) carries out annular removing, produces the position of installation annular electrode (3), then installs annular electrode (3), and fill Fill out the gap around annular electrode (3)；
(6) equipment connects: reference electrode (2) is connected with potentiostat (6) cathode, impressed current anode (7) and potentiostat (6) Anode is connected, and ring electrode (3) binding post corresponding to measuring instrument (8) is connected, by signal converyer (9) and potentiostat (6), Measuring instrument (8) is connected, and control room (10) establishes connection by wireless network with signal converyer (9)；
(7) system uses: being automatically determined out between any two annular electrode (3) by measuring instrument (8) and annular electrode (3) Pipeline (1) resistance is simultaneously sent result control room (10) to by signal converyer (9), the staff of control room (10) according to The resistance value of pipeline (1) judges pipeline (1) state, and staff can be assigned by control room (10), be transmitted by signal Device (9) transmitting instruction, adjustment potentiostat (6) working condition can be controlled by instructing, can also set potentiostat (6) to Adjust automatically working condition voluntarily adjusts its output voltage or electric current by potentiostat (6) as needed, controls also by instruction Measuring instrument (8) measures specified pipeline (1) resistance, according to the information that signal converyer (9) transmits, if discovery pipeline (1) resistance value And normal value deviation is larger, then illustrates that pipeline (1) is corroded, and staff can be corresponding with pipeline (1) according to annular electrode (3) Relationship is found out corresponding pipeline (1), and maintenance and inspection of sending someone.
CN201811123821.9A 2018-09-26 2018-09-26 A kind of pipeline corrosion protection system of metro area Withdrawn CN109208009A (en)

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Application publication date: 20190115