CN102277580A - Impressed current cathode protection method for jacket platform - Google Patents
Impressed current cathode protection method for jacket platform Download PDFInfo
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- CN102277580A CN102277580A CN2011102541643A CN201110254164A CN102277580A CN 102277580 A CN102277580 A CN 102277580A CN 2011102541643 A CN2011102541643 A CN 2011102541643A CN 201110254164 A CN201110254164 A CN 201110254164A CN 102277580 A CN102277580 A CN 102277580A
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- jacket platform
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- string
- impressed current
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 238000004210 cathodic protection Methods 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 11
- 239000004593 Epoxy Substances 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000003292 diminished effect Effects 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 6
- 239000013535 sea water Substances 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention relates to an impressed current cathode protection method for a jacket platform. A DC power supply control instrument and an auxiliary anode string are arranged, wherein the negative pole of the DC power supply control instrument is connected with the jacket platform through a cable, and the positive pole is connected with the auxiliary anode string through a cable; a reference electrode terminal is arranged on the DC power supply control instrument and is connected with a composite reference electrode; one end of the auxiliary anode string is fixed on the bottom of the sea, and the other end is fixed on a supporting structure extending out of the jacket platform; and meanwhile, the auxiliary anode string is parallel to the side faces of the jacket platform, and each side face is provided with one group of anode strings. Under the premise of not adding the load of the jacket platform, efficient protection is provided for the jacket platform, and the corrosion of seawater to the jacket platform is prevented; and the impressed current cathode protection method is especially applicable to a large jacket platform, is extremely economical and has strong operability. Meanwhile, the impressed current cathode protection method can substitute for the cathode protection of the jacket platform completely consuming away a sacrificial anode in service period, and can also be used for the cathode protection of a large jacket platform.
Description
Technical field
The present invention relates to the guard method of platform, relate in particular to a kind of jacket platform impressed current cathodic protection method that is applicable to, belong to field of ocean engineering.
Background technology
Jacket platform is widely used in the marine petroleum development engineering.Factors such as jacket platform is simple in structure because of it, cost is low, easy to maintenance are particluarly suitable for using in the shallow water.Jacket platform generally comprises: ocean engineering structures such as spud leg, stull, diagonal brace, life chunk, production module, 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 Steel Jacket platform.The jacket platform corrosion can be shortened the service life of platform, increases the expense of platform maintenance and maintenance.In order to prevent the corrosion of seawater, usually, on jacket platform, adopt the galvanic anode protection method, anticorrosion in order to jacket platform to jacket platform.
Existing jacket platform galvanic anode protection is mainly formed by being evenly distributed on the platform sacrificial anode and anode leg; electronegative anode material is soldered on the jacket platform by the anode leg, makes himself dissolving consumption generation cathodic protection current by couple action.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 low profile catheter body panel, in order to ocean steel construction protection, and, obtained good anticorrosion ability.But sacrificial anode has been consumed prematurely on the jacket if be welded to, and jacket platform can't be protected, and influences the jacket service life.
In addition; along with deepening gradually and jacket platform structure complicated day by day huge of marine site; large jacket platform cost increases considerably; if on the large jacket platform, adopt existing sacrificial anode protection galvanic protection; to there be hundreds of ton aluminium alloy to be wasted; and the large jacket platform load increase that causes owing to too much use sacrificial anode also can have influence on the stability of large jacket platform, and the jacket platform design strength 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 jacket platform impressed current cathodic protection method, it can be under the prerequisite that does not increase jacket platform load, for jacket platform provides protection effectively, prevent the corrosion of seawater to jacket platform; Especially suitable for the large jacket platform, and very economical, workable.
The objective of the invention is to realize by following technical scheme:
A kind of jacket platform impressed current cathodic protection method is characterized in that: be provided with direct supply controller, supplementary anode string, the negative pole of this direct supply controller is connected with jacket platform by cable, and anodal the polyphone by cable and supplementary anode connects; The direct supply controller is provided with the reference electrode terminal, and this reference electrode terminal is connected with compound reference electrode; One end of this supplementary anode string is fixed in the seabed, and the other end is fixed on the outer supporting structure of extending of jacket platform; Simultaneously, the supplementary anode string is parallel to the side of jacket platform, and each side all is provided with one group of supplementary anode string.
Described this direct supply controller is placed in the equipment room on the jacket platform.
Described compound reference electrode is installed in jacket platform spud leg bottom node inboard, and compound reference electrode is no more than 20cm apart from jacket platform.
Described supplementary anode string is made up of several sheaths, and cable is electrically connected on sheath inside, and the pouring epoxy sealing; And each anode is connected with cable separately, and all cables are fastened on steel wire, and is connected with the positive pole of direct supply controller.
Described supplementary anode string is parallel to the side of jacket platform, and each side all is provided with one group of supplementary anode string; Simultaneously, the anode diameter of supplementary anode string bottom is diminished successively by bottom to top, and is even to guarantee electric current and Potential distribution.
Described supporting structure is: the frame shape that is formed by connecting by steel pipe and steel plate supports, and steel pipe is connected with several stiffening webs all around with the steel plate junction, and this supporting structure is installed in the stull between two spud legs in jacket platform top.
Beneficial effect of the present invention: the present invention can for jacket platform provides protection effectively, prevent the corrosion of seawater to jacket platform under the prerequisite that does not increase jacket platform load; Especially suitable for the large jacket platform, and very economical, workable.Simultaneously, can replace the galvanic protection that the jacket platform of sacrificial anode is fallen in the interior completely consumed of military service phase, also can be used on the galvanic protection of large jacket platform.
Description of drawings:
Fig. 1 arranges synoptic diagram for the present invention on jacket platform.
Major label description in figure:
1 direct supply controller, 2 cables, 3 reference electrode terminals, 4 compound reference electrodes, 5 supplementary anode strings, 6 steel wires, 7 outer supporting structure, 8 jacket platforms of extending.
Embodiment
As shown in Figure 1, the present invention mainly comprises: direct supply controller 1, cable 2, supplementary anode string 6, direct supply controller 1 is placed in the equipment room on the jacket platform 8, the negative pole of direct supply controller 1 is connected with jacket platform 8 by cable 2, the anodal cable 2 that passes through is connected with supplementary anode string 6, direct supply controller 1 is provided with reference electrode terminal 3, and reference electrode terminal 3 is connected with compound reference electrode 4; Compound reference electrode 4 is installed in jacket platform 8 spud leg bottom node inboards, and compound reference electrode 4 is no more than 20cm apart from jacket platform 8.Measured jacket platform 8 surface potentials of reference electrode feed back on the direct supply controller 1, to reach the purpose of regulating outward current, current potential.
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 (6)
1. jacket platform impressed current cathodic protection method, it is characterized in that: be provided with direct supply controller, supplementary anode string, the negative pole of this direct supply controller is connected with jacket platform by cable, and anodal the polyphone with supplementary anode by cable connects; The direct supply controller is provided with the reference electrode terminal, and this reference electrode terminal is connected with compound reference electrode; One end of this supplementary anode string is fixed in the seabed, and the other end is fixed on the outer supporting structure of extending of jacket platform; Simultaneously, the supplementary anode string is parallel to the side of jacket platform, and each side all is provided with one group of supplementary anode string.
2. jacket platform impressed current cathodic protection method according to claim 1 is characterized in that: described this direct supply controller is placed in the equipment room on the jacket platform.
3. jacket platform impressed current cathodic protection method according to claim 1 is characterized in that: described compound reference electrode is installed in jacket platform spud leg bottom node inboard, and compound reference electrode is no more than 20cm apart from jacket platform.
4. jacket platform impressed current cathodic protection method according to claim 1 is characterized in that: described supplementary anode string is made up of several sheaths, and cable is electrically connected on sheath inside, and the pouring epoxy sealing; And each anode is connected with cable separately, and all cables are fastened on steel wire, and is connected with the positive pole of direct supply controller.
5. according to claim 1 or 4 described jacket platform impressed current cathodic protection methods, it is characterized in that: described supplementary anode string is parallel to the side of jacket platform, and each side all is provided with one group of supplementary anode string; Simultaneously, the anode diameter of supplementary anode string bottom is diminished successively by bottom to top, and is even to guarantee electric current and Potential distribution.
6. jacket platform impressed current cathodic protection method according to claim 1; it is characterized in that: described supporting structure is: the frame shape that is formed by connecting by steel pipe and steel plate supports; and be connected with several stiffening webs around steel pipe and the steel plate junction, this supporting structure is installed in the stull between two spud legs in jacket platform top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102541643A CN102277580A (en) | 2011-08-31 | 2011-08-31 | Impressed current cathode protection method for jacket platform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102541643A CN102277580A (en) | 2011-08-31 | 2011-08-31 | Impressed current cathode protection method for jacket platform |
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| CN102277580A true CN102277580A (en) | 2011-12-14 |
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| CN2011102541643A Pending CN102277580A (en) | 2011-08-31 | 2011-08-31 | Impressed current cathode protection method for jacket 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 |
| CN108118343A (en) * | 2018-01-17 | 2018-06-05 | 青岛钢研纳克检测防护技术有限公司 | The impressed current of jacket platform and sacrificial anode Combined Protection device and method |
| CN114016040A (en) * | 2021-10-25 | 2022-02-08 | 深圳中广核工程设计有限公司 | Impressed current cathodic protection system for jacket foundation of suction tube |
| CN114318348A (en) * | 2021-11-17 | 2022-04-12 | 海洋石油工程股份有限公司 | Inclined-pulling type impressed current cathodic protection device and method |
| CN114351152A (en) * | 2021-12-07 | 2022-04-15 | 海洋石油工程股份有限公司 | String-shaped sacrificial anode applied to marine steel structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5026468A (en) * | 1989-05-22 | 1991-06-25 | Colorado Interstate Gas Company | Dual bed cathodic protection system with automatic controls |
| CN101928945A (en) * | 2010-08-24 | 2010-12-29 | 中国船舶重工集团公司第七二五研究所 | Impressed current catholic protection device for ship |
| CN201722427U (en) * | 2010-04-09 | 2011-01-26 | 中国海洋石油总公司 | Jacket impressed current cathode protection device |
| CN201778114U (en) * | 2010-07-30 | 2011-03-30 | 上海船舶运输科学研究所 | Ship hull impressed current cathodic protection device |
| US20110120884A1 (en) * | 2009-11-25 | 2011-05-26 | Empire Technology Development Llc | Impressed current protection for food or beverage containers |
-
2011
- 2011-08-31 CN CN2011102541643A patent/CN102277580A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5026468A (en) * | 1989-05-22 | 1991-06-25 | Colorado Interstate Gas Company | Dual bed cathodic protection system with automatic controls |
| US20110120884A1 (en) * | 2009-11-25 | 2011-05-26 | Empire Technology Development Llc | Impressed current protection for food or beverage containers |
| CN201722427U (en) * | 2010-04-09 | 2011-01-26 | 中国海洋石油总公司 | Jacket impressed current cathode protection device |
| CN201778114U (en) * | 2010-07-30 | 2011-03-30 | 上海船舶运输科学研究所 | Ship hull impressed current cathodic protection device |
| CN101928945A (en) * | 2010-08-24 | 2010-12-29 | 中国船舶重工集团公司第七二五研究所 | Impressed current catholic protection device for ship |
Cited By (9)
| 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 |
| CN108118343A (en) * | 2018-01-17 | 2018-06-05 | 青岛钢研纳克检测防护技术有限公司 | The impressed current of jacket platform and sacrificial anode Combined Protection device and method |
| CN114016040A (en) * | 2021-10-25 | 2022-02-08 | 深圳中广核工程设计有限公司 | Impressed current cathodic protection system for jacket foundation of suction tube |
| CN114318348A (en) * | 2021-11-17 | 2022-04-12 | 海洋石油工程股份有限公司 | Inclined-pulling type impressed current cathodic protection device and method |
| CN114318348B (en) * | 2021-11-17 | 2023-11-28 | 海洋石油工程股份有限公司 | Oblique-pulling type impressed current cathode protection device and method |
| CN114351152A (en) * | 2021-12-07 | 2022-04-15 | 海洋石油工程股份有限公司 | String-shaped sacrificial anode applied to marine steel structure |
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Application publication date: 20111214 |