CN102277578A - ICCP (impressed current cathodic protection) method of leg type platform - Google Patents
ICCP (impressed current cathodic protection) method of leg type platform Download PDFInfo
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- CN102277578A CN102277578A CN2010101989253A CN201010198925A CN102277578A CN 102277578 A CN102277578 A CN 102277578A CN 2010101989253 A CN2010101989253 A CN 2010101989253A CN 201010198925 A CN201010198925 A CN 201010198925A CN 102277578 A CN102277578 A CN 102277578A
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Abstract
The invention provides an ICCP (impressed current cathodic protection) method of a leg type platform. In the ICCP method, a DC (direct current) power supply, an auxiliary anode string, a reference electrode and connecting cables are used, wherein the cathode of the DC power supply is connected with the upper part of the platform by virtue of a cathodic cable and the anode of the DC power supply is connected with the auxiliary anode string by virtue of an anode cable; the DC power supply is provided with a reference electrode terminal and connected with the reference electrode by virtue of the electrode terminal; and the reference electrode is fixedly arranged on the leg type platform and immersed in seawater. The ICCP method can be utilized to protect the leg type platform effectively and prevent the leg type platform from being corroded by seawater, and is especially suitable for the large leg type platform; and in addition, by utilizing the ICCP method, the installation is convenient, the protection service life is long and the reliability is strong.
Description
Technical field
The present invention relates to the method for platform protection, relate in particular to a kind of tension leg type platform impressed current cathodic protection method that is applicable to.Belong to field of ocean engineering.
Background technology
Along with ocean exploitation more and more advances to the deep-sea, the exploitation of hydrocarbon resources also constantly marches the deep-sea.Physical environment is very abominable in the general marine site, deep-sea, and the environmental load more complicated is just strict more and accurately to the requirement of the theoretical analysis of oceanographic engineering facility, design and installation etc.Compliant platform has special structure formation because of it, and construction costs is lower, and safety of structure is good, is developed widely and uses.The tension leg type platform is exactly the typical case of compliant platform structure, and the tension leg type main platform body mainly comprises: platform upper, column (containing stull and diagonal brace), lower body (caisson) etc., these ocean engineering structures are generally steel construction.
Because seawater is a kind of very strong corrosive medium, if do not take effective anticorrosive measure, serious corrosion will take place in the tension leg type platform of steel, shortens the service life of platform, increases the expense that platform is safeguarded and keeped in repair.In order to prevent the corrosion of seawater, at present, generally adopt the galvanic anode protection method to provide corrosionproof protection for the tension leg type platform to the tension leg type platform.
Existing galvanic anode protection method; mainly form by the sacrificial anode and the anode leg that are evenly arranged on the tension leg type platform; sacrificial anode is soldered on the tension leg type platform by the anode leg, and the consumption by sacrificial anode itself provides protection for the tension leg type platform.This method has does not need external power source, structures are noiseless or very little, operation does not need management, the more little economy more of engineering after debugging, protective current is evenly distributed and the utilization ratio advantages of higher to being close to.Therefore, be widely used on the small-sized platform, in order to ocean steel construction protection, and, obtained good anticorrosion ability.But existing galvanic anode protection method has consumed a large amount of aluminum alloy materials, has increased the tension leg type platform load.And along with anodic consumption, platform load changes, and has increased the unstable of platform.
Along with deepening gradually and tension leg type platform structure complicated day by day huge of marine site; large-scale tension leg type platform cost increases considerably; if on large-scale tension leg type platform, adopt existing sacrificial anode protection galvanic protection; to there be a large amount of aluminium alloys to be wasted; and, because too much use sacrificial anode, and the increase of the large-scale tension leg type platform load that causes; also can have influence on the stability of large-scale tension leg type platform, tension leg type platform design intensity is increased.
Summary of the invention
Main purpose of the present invention is to overcome the above-mentioned shortcoming that prior art exists, and provide a kind of tension leg type platform impressed current cathodic protection method, it can effectively be protected for the tension leg type platform, prevent the corrosion of seawater to the tension leg type platform, especially suitable for large-scale tension leg type platform; And, easy for installation, the protection life-span long, good reliability.
The objective of the invention is to realize by following technical scheme:
A kind of tension leg type platform impressed current cathodic protection method; it is characterized in that: be provided with direct supply, supplementary anode string, reference electrode and connect and use cable; the negative pole of this direct supply is connected with platform top by cathode cable; the anodal polyphone by anode cable and supplementary anode connects; direct supply is provided with the reference electrode terminal; direct supply is connected with reference electrode by electrode terminal, and this reference electrode is fixed on the tension leg type platform, and is immersed in the seawater.
The two ends of described supplementary anode string are connected respectively to the outer end of platform lower horizontal floating drum, and supplementary anode was ganged up steel wire and is strained and fixed.
Each anode of described supplementary anode string is a tubulose, and several anode parallel connections.
Beneficial effect of the present invention: the present invention is owing to adopt technique scheme, and it can effectively be protected for the tension leg type platform, prevents the corrosion of seawater to the tension leg type platform, and is especially suitable for large-scale tension leg type platform; And, easy for installation, the protection life-span long, good reliability.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Major label description in figure:
1 direct supply, 2 reference electrode terminals, 3 cathode cables, 4 platforms, 5 anode cables, 6 reference electrodes, 7 supplementary anode strings, 8 steel wires.
Embodiment
Below by specific embodiment, and describe in conjunction with the accompanying drawings that the invention will be further described.
As shown in Figure 1, the present invention mainly comprises: direct supply 1, supplementary anode string 7, reference electrode 6 and cathode cable 3, anode cable 5, direct supply 1 are placed in the equipment room on the platform 4; The negative pole of direct supply 1 is connected with platform top by cathode cable 3, the anodal anode cable 3 that passes through is connected with supplementary anode string 7, direct supply 1 is provided with reference electrode reference electrode terminal 2, direct supply 1 is connected with reference electrode 6 by reference electrode terminal 2, reference electrode 6 is fixed on the platform 4, and is immersed in the seawater.
Present embodiment: direct supply 1 is a potentiostat.Platform 4 surface potentials that reference electrode 6 is measured feed back to potentiostat to reach the purpose of adjusting outward current/current potential.Reference electrode 4 adopts Ag/AgCl or a kind of or both combined electrodes of high purity zinc (greater than 99.99%Zn).
Supplementary anode string 7 is made up of several titanium parent tube shape Mixed Metal Oxide Coated Titanium Anodes, and several anode parallel connections.The several anode distribution of supplementary anode string 7 intermediary are closeer and thicker, and the anode at two ends is thinner.Each anode is connected with cable alone, and all anode cables are electrically connected and conflux into an anode cable, can prevent from like this that certain anode from breaking down to cause whole anode assemblies to work.The two ends of whole supplementary anode string 7 are connected respectively to the outer end of platform 4 lower horizontal floating drums, and supplementary anode string 7 is by Fixation With Steel Wire.
The size and location of the DC power supply device of present embodiment, reference electrode, supplementary anode string are calculated by finite element or boundary Element Numerical Simulation according to protected tension leg type platform surface size.
Potentiostat, cathode cable 3, anode cable 5, reference electrode 6, steel wire 8 are the commercially available prod.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (3)
1. tension leg type platform impressed current cathodic protection method; it is characterized in that: be provided with direct supply, supplementary anode string, reference electrode and connect and use cable; the negative pole of this direct supply is connected with platform top by cathode cable; the anodal polyphone by anode cable and supplementary anode connects; direct supply is provided with the reference electrode terminal; direct supply is connected with reference electrode by electrode terminal, and this reference electrode is fixed on the tension leg type platform, and is immersed in the seawater.
2. tension leg type platform impressed current cathodic protection method according to claim 1, it is characterized in that: the two ends of described supplementary anode string are connected respectively to the outer end of platform lower horizontal floating drum, and supplementary anode was ganged up steel wire and is strained and fixed.
3. tension leg type platform impressed current cathodic protection method according to claim 1, it is characterized in that: each anode of described supplementary anode string is a tubulose, and several anode parallel connections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101989253A CN102277578A (en) | 2010-06-12 | 2010-06-12 | ICCP (impressed current cathodic protection) method of leg type platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101989253A CN102277578A (en) | 2010-06-12 | 2010-06-12 | ICCP (impressed current cathodic protection) method of leg type platform |
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| CN102277578A true CN102277578A (en) | 2011-12-14 |
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| CN2010101989253A Pending CN102277578A (en) | 2010-06-12 | 2010-06-12 | ICCP (impressed current cathodic protection) method of leg type platform |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103014722A (en) * | 2012-12-17 | 2013-04-03 | 中国海洋石油总公司 | Device for installing impressed current cathodic protection system on offshore platform |
| CN103060816A (en) * | 2012-12-24 | 2013-04-24 | 钢铁研究总院青岛海洋腐蚀研究所 | Impressed current negative pole protective device of self-elevating platform and protective method thereof |
| 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 |
| CN108359993A (en) * | 2018-03-15 | 2018-08-03 | 哈尔滨工业大学 | A kind of impressed current catholic protection device that metallic cerium is anti-oxidation |
| CN110768293A (en) * | 2019-11-01 | 2020-02-07 | 上海电力设计院有限公司 | Offshore wind power generation system and control method thereof |
| EP3683336A4 (en) * | 2017-10-13 | 2020-11-18 | Dalian Kingmile Anticorrosion Technology Co., Ltd. | Marine tensile anode system and installation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86100581A (en) * | 1986-05-21 | 1987-12-02 | 华东输油管理局 | Overhead metallic pipe cathode protector |
| CN2329671Y (en) * | 1998-02-06 | 1999-07-21 | 吴岳亭 | Submerged steel body cathodic-protection apparatus |
| CN2811324Y (en) * | 2005-08-08 | 2006-08-30 | 沈阳科金电子有限公司 | Cathode protection instrument |
-
2010
- 2010-06-12 CN CN2010101989253A patent/CN102277578A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86100581A (en) * | 1986-05-21 | 1987-12-02 | 华东输油管理局 | Overhead metallic pipe cathode protector |
| CN2329671Y (en) * | 1998-02-06 | 1999-07-21 | 吴岳亭 | Submerged steel body cathodic-protection apparatus |
| CN2811324Y (en) * | 2005-08-08 | 2006-08-30 | 沈阳科金电子有限公司 | Cathode protection instrument |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103014722A (en) * | 2012-12-17 | 2013-04-03 | 中国海洋石油总公司 | Device for installing impressed current cathodic protection system on offshore platform |
| CN103014722B (en) * | 2012-12-17 | 2015-07-22 | 中国海洋石油总公司 | Device for installing impressed current cathodic protection system on offshore platform |
| CN103060816A (en) * | 2012-12-24 | 2013-04-24 | 钢铁研究总院青岛海洋腐蚀研究所 | Impressed current negative pole protective device of self-elevating platform and protective method thereof |
| CN103060816B (en) * | 2012-12-24 | 2015-01-21 | 钢铁研究总院青岛海洋腐蚀研究所 | Impressed current negative pole protective device of self-elevating platform and protective method thereof |
| 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 |
| EP3683336A4 (en) * | 2017-10-13 | 2020-11-18 | Dalian Kingmile Anticorrosion Technology Co., Ltd. | Marine tensile anode system and installation method thereof |
| CN108359993A (en) * | 2018-03-15 | 2018-08-03 | 哈尔滨工业大学 | A kind of impressed current catholic protection device that metallic cerium is anti-oxidation |
| CN110768293A (en) * | 2019-11-01 | 2020-02-07 | 上海电力设计院有限公司 | Offshore wind power generation system and control method thereof |
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Application publication date: 20111214 |