CN114507861A - Cathode protection and monitoring system for semi-submersible platform - Google Patents
Cathode protection and monitoring system for semi-submersible platform Download PDFInfo
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- CN114507861A CN114507861A CN202210080241.6A CN202210080241A CN114507861A CN 114507861 A CN114507861 A CN 114507861A CN 202210080241 A CN202210080241 A CN 202210080241A CN 114507861 A CN114507861 A CN 114507861A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 37
- 238000004210 cathodic protection Methods 0.000 claims abstract description 46
- 239000002131 composite material Substances 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims description 25
- 229910052751 metal Inorganic materials 0.000 claims description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 238000005260 corrosion Methods 0.000 claims description 7
- 238000004873 anchoring Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 4
- 229910021607 Silver chloride Inorganic materials 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005536 corrosion prevention Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
-
- 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
- C23F13/22—Monitoring arrangements therefor
-
- 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
- C23F2213/31—Immersed structures, e.g. submarine structures
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
The invention provides a semi-submersible platform cathode protection and monitoring system. The protection device comprises a protected semi-submersible platform main body, a sacrificial anode cathodic protection system and an impressed current cathodic protection system, wherein the protected semi-submersible platform main body is fixedly connected with a sacrificial anode device, the sacrificial anode device is connected with a numerical control switch and a current collector after being welded with an electric wire, the impressed current cathodic protection system is detachably connected to the protected semi-submersible platform main body and comprises a composite cable, and an auxiliary anode, a reference electrode and a potential monitoring system are arranged on the composite cable. The invention realizes the effective control of the sacrificial anode cathode protection through the digital control switch, and simultaneously stably monitors the output current data; the impressed current cathodic protection can be realized through the composite cable, and the composite cable can be applied to the service life prolonging requirement of a semi-submersible platform.
Description
Technical Field
The invention relates to the field of ocean engineering, in particular to a semi-submersible platform cathode protection and monitoring system.
Background
The design life of the semi-submersible platform is mostly more than twenty years, however, in the actual marine environment, the semi-submersible platform can generate chemical or electrochemical action with the surrounding seawater and other media to cause consumption or corrosion of metal materials, further causing structural damage of the platform, influencing the operation safety and reducing the service life.
The cathodic protection system is a common corrosion protection measure, and the conventional sacrificial anode cathodic protection system mostly adopts a direct welding mode of a sacrificial anode and a semi-submersible platform, so that the effective control of the cathodic protection system cannot be directly realized by adjusting the sacrificial anode; the existing impressed current cathodic protection is mostly considered in the design and construction process of a platform, and sometimes the expected protection effect is difficult to achieve in practical engineering application, so that an impressed current cathodic protection system capable of prolonging the service life of the platform in service is urgently needed.
Disclosure of Invention
In view of the above-mentioned technical problems, a cathodic protection and monitoring system for a semi-submersible platform is provided, which can effectively control the cathodic protection of a protected main body, can be used for prolonging the service life of the semi-submersible platform in service, and can realize real-time monitoring of the local potential of the protected main body and the output current of a sacrificial anode. The technical means adopted by the invention are as follows:
the utility model provides a semi-submerged formula platform cathodic protection and monitoring system, includes by protection semi-submerged formula platform main part, sacrificial anode cathodic protection system and impressed current cathodic protection system, protected semi-submerged formula platform main part fixed connection sacrificial anode device, the sacrificial anode device links to each other with numerical control switch and current collector after with the electric wire welding, impressed current cathodic protection system detachably connects in being protected semi-submerged formula platform main part, and it includes compound cable, arrange auxiliary anode, reference electrode, electric potential monitoring system on the compound cable.
Furthermore, the sacrificial anode device comprises an anode iron angle frame, the anode iron angle frame is used for fixing the sacrificial anode, the sacrificial anode contains an anode copper core, the anode copper core and the electric wire are welded in a metal flange, and the numerical control switch and the current collector are arranged in the metal flange.
Furthermore, the end part of the composite cable is connected with an anchor chain through a deconcentrator, and the anchor chain is connected to the semi-submersible platform main body through an anchoring lifting lug.
Further, the anode angle frame fixes the sacrificial anode through an insulating gasket.
Furthermore, the anode copper core enters the metal flange after being subjected to corrosion prevention treatment.
Furthermore, the metal flange is divided into an upper half piece and a lower half piece, the upper half piece of the metal flange is fixedly welded with the protected semi-submersible platform main body, and the insulating gasket is arranged between the upper piece and the lower piece of the metal flange.
Furthermore, the current collector is connected with the cable through two wires, one is used for realizing electric connection and conduction with the protected semi-submersible platform, and the other is used for connecting a data receiving system to realize output current transmission of the sacrificial anode.
Further, the auxiliary anode controls the output current thereof through a multi-way controller.
Furthermore, the reference electrode on the composite cable is a Ag \ AgCl and high-purity zinc double reference electrode.
Furthermore, a data transmission line is arranged between the potential monitoring system and the data receiving system.
Compared with the prior art, the invention has the following beneficial effects: the cathodic protection system for the marine environment can realize effective control of sacrificial anode cathodic protection through a digital control switch and simultaneously stably monitor output current data of the sacrificial anode cathodic protection; the invention can realize impressed current cathodic protection through the composite cable, can realize detachable operation, can be applied to the service life prolonging requirement of a semi-submersible platform, can be reasonably arranged according to the actual requirement of the platform, meanwhile, a potential monitoring device is integrated on the composite cable, can accurately monitor the protection potential of the composite cable, and can more reasonably adjust the output current of the auxiliary anode through the fed-back potential information. The sacrificial anode protection system with the numerical control switch and the current collector and the integrated potential monitoring system can realize combined cathodic protection by an impressed current cathodic protection system in a composite cable form, and can effectively solve the problems of cathodic protection control of a semi-submersible platform and the service life requirement of an in-service platform.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a sacrificial anode cathodic protection control system for marine environment according to the present invention.
FIG. 2 is a layout diagram of an impressed current cathodic protection system of the integrated potential monitoring system of the present invention in the form of a composite cable.
FIG. 3 is a schematic diagram of the structure of an impressed current cathodic protection system of the integrated potential monitoring system in the form of a composite cable according to the present invention.
In the figure: 1. a protected semi-submersible platform body; 2. an anode iron angle frame; 3. a sacrificial anode; 4. an anode copper core; 5. an insulating washer; 6. a welding point; 7. a metal flange; 8. a digital control switch; 9. a current collector; 10. an anti-corrosion cable; 11. a composite cable; 111. anchoring the lifting lug; 112. an anchor chain; 113. a wire divider; 114. an auxiliary anode; 115. a reference electrode; 116. a potential monitoring system.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the embodiment of the invention discloses a cathodic protection and monitoring system for a semi-submersible platform, which comprises a protected semi-submersible platform main body 1, a sacrificial anode cathodic protection system and an impressed current cathodic protection system, wherein the protected semi-submersible platform main body is fixedly connected with a sacrificial anode device, the sacrificial anode device is connected with a numerical control switch and a current collector after being welded with an electric wire, the impressed current cathodic protection system is detachably connected to the protected semi-submersible platform main body and comprises a composite cable, and an auxiliary anode, a reference electrode and a potential monitoring system are arranged on the composite cable.
The cathode protection adopted by the invention is to control the metal surface potential of the protected structure to be within the protection potential range, thereby reducing the loss of electrons to slow down the corrosion of metal materials. The cathodic protection of impressed current is that protective current is introduced into the marine environment through an auxiliary anode on the composite cable, seawater is supplied to protected metal, the protected metal is always a cathode in the marine environment, the metal surface of the marine structure almost only has reduction reaction of electrons, oxidation reaction of losing metal ions can not occur, oxidation reaction of losing electrons can occur on the surface of the auxiliary anode, and thus the marine structure can achieve the anti-corrosion effect.
Specifically, the sacrificial anode device comprises an anode iron angle frame 2, the anode iron angle frame is used for fixing a sacrificial anode 3, and the anode iron angle frame is used for fixing the sacrificial anode through an insulating gasket 5. Contain positive pole copper core 4 in the sacrificial anode, the inside positive pole copper core 4 of sacrificial anode 3 extends to and realizes the electricity with the electric wire welding in metal flange 7 and be connected, metal flange 7 divide into first half and second half, first half and the semi-submerged platform main part welded fastening of being protected of metal flange, insulating washer arrange in between the last lower piece of metal flange. And the inner wire of the metal flange is connected with the numerical control switch 8 and the current collector 9. The current collector is connected with a cable through two wires, one wire is used for realizing electric connection and conduction with the protected semi-submersible platform, the other wire is used for connecting a data receiving system and realizing output current transmission of the sacrificial anode, and the wires are in an anti-corrosion cable form.
In a preferred embodiment, the anode copper core is subjected to corrosion prevention treatment and then enters the metal flange.
Specifically, in this embodiment, the sacrificial anode cathode protection system integrating the numerical control switch and the current collector is uniformly arranged on the protected platform main body after numerical calculation, the sacrificial anode device is selected by referring to GB/T4948-2002-aluminum-zinc indium system alloy sacrificial anode, the anode angle frame 2 is fixedly connected with the protected semi-submersible platform main body 1, so as to fix the position of the sacrificial anode 3, an insulating gasket 5 is adopted between the anode angle frame 2 and the sacrificial anode 3, and the outer diameter of the insulating gasket 5 is slightly larger than the contact surface of the iron angle frame 2, so as to ensure the insulating treatment with the protected platform main body 1. The anode copper core 4 extends into the metal flange 7, is welded with an electric wire by brazing or soldering, is sequentially connected with the numerical control switch 8 and the current collector 9, and the numerical control switch 8, the circuit collector 9 and the sacrificial anode 3 at the position adopt common suffix numbers, so that the cathode protection control is conveniently and accurately carried out. Two wires are led out from the current collector 9, one wire is used for transmitting monitoring data in real time so as to facilitate monitoring of output current of the sacrificial anode, the monitored current data is analyzed and judged in time, and the other wire is used for being connected with the semi-submersible platform to form a loop so as to ensure conductivity. The method is used for monitoring the performance of the sacrificial anode and authenticating whether the cathode protection system works normally or not.
As shown in fig. 2 and 3, in the present embodiment, the system for protecting and detecting the cathode of the semi-submersible platform includes an impressed current cathode protection system in the form of a composite cable, which includes an integrated potential monitoring system, and the protected semi-submersible platform main body 1 is fixedly connected to an anchoring lug 111, so as to facilitate reasonable arrangement of the composite cable 11, the anchoring lug 111 is movably connected to an anchor chain 112 through a shackle, so as to facilitate installation and movement of the composite cable 11, so as to meet the service life requirement of the in-service semi-submersible platform, the anchor chain 112 is used so as to control the arrangement length and height of the integral composite cable 11, two ends of the composite cable 11 are movably connected to the anchoring lug 111 through the double anchor chains 112 and the shackle, and the anchor chain 112 is fixedly connected to a splitter 113, so as to facilitate clear arrangement of various communication cables, signal cables, and the like. The distributor 113 is fixedly connected with the composite cable 11, so that accurate arrangement of the reference electrode 115, the auxiliary anode 114 and the potential monitoring system 116 is facilitated. The reference electrode 115 adopts Ag \ AgCl and high-purity zinc double reference electrodes, the reference electrode is a standard electrode which is used as a reference when the partial potential of the semi-submersible platform structure is measured, the partial metal structure of the semi-submersible platform and the reference electrode with known potential form a battery, and the electrode potential of the partial metal structure of the semi-submersible platform can be calculated by measuring the electromotive force of the battery. Through data feedback of the potential monitoring system 116, data analysis and judgment are performed, so that the magnitude of the current released by the auxiliary anode 114 is conveniently adjusted, and effective control of impressed current cathodic protection is realized.
Specifically, impressed current cathodic protection system includes tensioning formula composite cable structure, tensioning formula composite cable can adopt horizontal pull formula and rectilinear, composite cable structure tip sets up the deconcentrator, the outer end of deconcentrator adopts two anchor chains and a plurality of anchor lug swing joint, the anchor lug passes through copper tin or soldering tin and is protected semi-submerged formula platform main part welding. The composite cable structure adopts a polyvinyl chloride insulating sheath cable capable of bearing considerable tensile force.
The composite cable can realize independent disassembly and movement, can be applied to the installation of an in-service semi-submersible platform, and can meet the requirement of prolonging the service life. The monitoring system acquires the output current of the sacrificial anode through the current collector, acquires the potential information of the key part of the semi-submersible platform through the potential monitoring system, and can display the potential information on line in the data receiving system through data transmission and digital conversion. The invention relates to a cathode protection and monitoring system for a semi-submersible platform in marine environment, which can better realize effective control of cathode protection and simultaneously achieve the effect of prolonging the service life of the in-service semi-submersible platform; the system can acquire the information of the anticorrosion state of the platform in real time, store and record the information and display the information on line, can further verify the protection effect of the cathodic protection system, and ensures the safe operation of the platform.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a semi-submerged formula platform cathodic protection and monitoring system, its characterized in that, includes by protection semi-submerged formula platform main part, sacrificial anode cathodic protection system and impressed current cathodic protection system, protected semi-submerged formula platform main part fixed connection sacrificial anode device, the sacrificial anode device links to each other with numerical control switch and current collector after with the electric wire welding, impressed current cathodic protection system detachably connects in being protected semi-submerged formula platform main part, and it includes compound cable, arrange auxiliary anode, reference electrode, electric potential monitoring system on the compound cable.
2. The cathodic protection and monitoring system for a semi-submersible platform as recited in claim 1 wherein the sacrificial anode device comprises an anode iron angle bracket for holding a sacrificial anode having an anode copper core welded to a wire within a metal flange having a digitally controlled switch and a current collector disposed therein.
3. The cathodic protection and monitoring system of claim 1, wherein the ends of the composite cables are connected to anchor chains via deconcentrators, said anchor chains being connected to the semi-submersible platform body via anchoring lugs.
4. The semi-submersible platform cathodic protection and monitoring system of claim 1 wherein the anode angle brackets secure the sacrificial anode through an insulating gasket.
5. The semi-submersible platform cathodic protection and monitoring system of claim 2 wherein the anodic copper core is corrosion protected and then passes into a metal flange.
6. The cathodic protection and monitoring system for a semi-submersible platform as recited in claim 4 wherein the metal flange is divided into an upper half and a lower half, the upper half of the metal flange is welded to the body of the semi-submersible platform to be protected, and the insulating gasket is disposed between the upper and lower halves of the metal flange.
7. The cathodic protection and monitoring system for a semi-submersible platform as recited in claim 1 wherein the current collector is connected to the cable by two wires, one for electrically connecting the circuit to the protected semi-submersible platform and one for connecting the data receiving system to enable the transmission of the output current of the sacrificial anode.
8. The semi-submersible platform cathodic protection and monitoring system of claim 1 wherein the auxiliary anode controls its output current through a multi-way controller.
9. The cathodic protection and monitoring system of claim 1 wherein the reference electrode on the composite cable is a dual reference electrode of Ag/AgCl and high purity zinc.
10. The cathodic protection and monitoring system for a semi-submersible platform as recited in claim 1 or 7 wherein a data transmission line is provided between the potential monitoring system and the data receiving system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210080241.6A CN114507861A (en) | 2022-01-24 | 2022-01-24 | Cathode protection and monitoring system for semi-submersible platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210080241.6A CN114507861A (en) | 2022-01-24 | 2022-01-24 | Cathode protection and monitoring system for semi-submersible platform |
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| CN114507861A true CN114507861A (en) | 2022-05-17 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102277579A (en) * | 2010-06-12 | 2011-12-14 | 中国海洋石油总公司 | Impressed current cathodic protection method for deepwater semisubmersible platform |
| CN107326367A (en) * | 2017-07-10 | 2017-11-07 | 中海石油(中国)有限公司 | In-service offshore platform tension type impressed current cathodic protection and monitoring device and method |
| CN207738843U (en) * | 2018-01-09 | 2018-08-17 | 大连科迈尔防腐科技有限公司 | A kind of ocean platform tension type impressed current cathodic protection system |
| CN109913878A (en) * | 2019-04-04 | 2019-06-21 | 中国石油化工股份有限公司 | Cathode protection sacrificial anode monitoring device and consumption detection method |
| KR20200137822A (en) * | 2019-05-31 | 2020-12-09 | 대우조선해양 주식회사 | Corrosion protection device for ships |
-
2022
- 2022-01-24 CN CN202210080241.6A patent/CN114507861A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102277579A (en) * | 2010-06-12 | 2011-12-14 | 中国海洋石油总公司 | Impressed current cathodic protection method for deepwater semisubmersible platform |
| CN107326367A (en) * | 2017-07-10 | 2017-11-07 | 中海石油(中国)有限公司 | In-service offshore platform tension type impressed current cathodic protection and monitoring device and method |
| CN207738843U (en) * | 2018-01-09 | 2018-08-17 | 大连科迈尔防腐科技有限公司 | A kind of ocean platform tension type impressed current cathodic protection system |
| CN109913878A (en) * | 2019-04-04 | 2019-06-21 | 中国石油化工股份有限公司 | Cathode protection sacrificial anode monitoring device and consumption detection method |
| KR20200137822A (en) * | 2019-05-31 | 2020-12-09 | 대우조선해양 주식회사 | Corrosion protection device for ships |
Non-Patent Citations (1)
| Title |
|---|
| 余晓毅，等: ""深水半潜式生产平台全时在位腐蚀防控安装保障技术研究"", 《中国海上油气》, pages 201 - 206 * |
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