CN202252624U - Pipeline provided with solid electrolyte coating and used for atmospheric zone of offshore platform - Google Patents
Pipeline provided with solid electrolyte coating and used for atmospheric zone of offshore platform Download PDFInfo
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- CN202252624U CN202252624U CN 201120241337 CN201120241337U CN202252624U CN 202252624 U CN202252624 U CN 202252624U CN 201120241337 CN201120241337 CN 201120241337 CN 201120241337 U CN201120241337 U CN 201120241337U CN 202252624 U CN202252624 U CN 202252624U
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- solid electrolyte
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- electrolyte coating
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Abstract
The utility model relates to a pipeline provided with a solid electrolyte coating and used for an atmospheric zone of an offshore platform, being applied to corrosion resistance of steel pipes. An anti-corrosion insulation coating, the solid electrolyte coating and a conductive coating are sequentially arranged on the outer wall of a steel pipe from inside to outside; and a platinum sheet reference electrode is buried in the solid electrolyte coating, the platinum sheet reference electrode is connected with a reference electrode lead wire, the reference electrode lead wire radially penetrates the conductive coating and is further led out, an auxiliary anode lead wire is axially buried in the conductive coating, and the auxiliary anode lead wire penetrates out of one end of the conductive coating. The pipeline disclosed by the utility model has the effects that the solid electrolyte coating has the physical properties of ionic conduction function, good adhesion force, impact toughness and the like, and can be solidified rapidly and form an uniform film layer, a production process is simple, the pipeline is high in cost performance, a combined protection way of the anti-corrosion insulation coating and a gas-phase cathode protection system is further realized for the pipeline which is directly exposed in the atmospheric zone of the offshore platform in a gas-phase environment, and the effectiveness in corrosion resistance is further increased.
Description
Technical field
The utility model relates to the steel pipe corrosion-proof technical field, and steel pipe is used in particularly a kind of ocean platform construction, and the ocean platform atmospheric region with solid electrolyte coating realization cathodic protection is used pipeline, is applicable to the ocean platform atmospheric region that is directly exposed in the gaseous environment.
Background technique
From invention cathode protection technology in 1824 so far; Though this effective and economic anti-corrosion measure is always by people's extensive use; But for many years, domestic and international cathode protection technology can only be used for the electrolyte environment of continuous phases such as liquid electrolyte environment and edatope.Can metal construction implement cathodic protection must possess three conditions: (1) is protected metal must be among the continuous electrolyte environment; (2) protected metal in electrolyte environment, to be polarized easily; (3) protected metal, anode and electrolysis mass-energy to form the galvanic circle.For the hardware or the member that are directly exposed in the gaseous environment; And various storage tanks, pipeline to be positioned at the situation aggressive mediums such as area that supernatant position and gas-liquid two-phase have a common boundary be the HR high resistance thin liquid film that discontinuous phase disperses; When utilizing traditional cathode protecting process; Impressed current can't reach by the traditional cathode protecting process of all surfaces of protection metal and also be difficult to the effect that reaches desirable, even can not realize cathodic protection.
The model utility content
The purpose of the utility model is: provide a kind of ocean platform atmospheric region with solid electrolyte coating to use pipeline; For being directly exposed to ocean platform atmospheric region pipeline in the gaseous environment, increase etch-proof validity with the mode of anticorrosive insulation coating and gas phase cathodic protection system Combined Protection.
The technological scheme that the utility model adopts is: the ocean platform atmospheric region with solid electrolyte coating is used pipeline; Mainly form by steel pipe, anticorrosive insulation coating, solid electrolyte coating and conductive coating; There is the reservation welding section at the steel pipe two ends, it is characterized in that: anticorrosive insulation coating, solid electrolyte coating and conductive coating are arranged on the outer wall of steel pipe from inside to outside successively; In solid electrolyte coating, be embedded with the platinized platinum reference electrode; The platinized platinum reference electrode connects the reference electrode lead-in wire; The reference electrode lead-in wire radially passes conductive coating and draws, and in conductive coating, axially is embedded with the auxiliary anode lead-in wire, and the auxiliary anode lead-in wire passes from an end of conductive coating.
Wherein steel pipe nominal diameter 114～377mm reserves each long 150～200mm of welding section two ends; The thickness of anticorrosive insulation coating is 0.1～0.3mm, and the thickness of solid electrolyte coating is 0.5～2mm, and the thickness of conductive coating is 0.5～2mm; There is the platinized platinum reference electrode to embed in the solid electrolyte coating respectively apart from 3 meters of pipe ends and 9 meters; The length of platinized platinum reference electrode is that 10～50mm, the wide 5～20mm of being, thickness are 0.1～0.5mm; Reference electrode lead-in wire and auxiliary anode lead-in wire are copper cash, and the copper core diameter is 0.41～0.97mm.
Summary has the manufacture process of the ocean platform atmospheric region of solid electrolyte coating with pipeline.Consult Fig. 1.With the outer surface derusting by sandblasting of steel pipe 1, at the outer surface coating anticorrosive insulation coating 2 of steel pipe 1, brushing three road solid electrolyte coatings 3 on anticorrosive insulation coating 2.Before brushing the second road solid electrolyte coating 3, respectively platinized platinum reference electrode 7 is placed on the coating apart from 3 meters of pipe ends and 9 meters, second and third road of brushing behind the surface drying, platinized platinum reference electrode 7 is all covered by electrolyte coating; Platinized platinum reference electrode 7 is drawn through reference electrode lead-in wire 6; Brushing three road conductive coatings 4 on solid electrolyte coating 3, brush the coating of the second road conductive coating 4 before, auxiliary anode lead-in wire 8 is placed in the coating; Second and third road of brushing is all covered lead behind the surface drying by electrically-conducting paint.Reserve and reserve welding section 5.Drag reduction wear resistant coating in the internal surface of steel pipe 1 can spray, with above-mentioned prefabricated have ocean platform atmospheric region that solid electrolyte coating realizes cathodic protection with the pipeline scene of being transported to weld, construction such as repaired mouth becomes pipeline.
The beneficial effect of the utility model: the ocean platform atmospheric region that the utlity model has solid electrolyte coating is used pipeline, and production technology is simple, anticorrosive quality is reliable.Solid electrolyte coating has ion conducting function, can set up complete cathodic protection loop in the metal surface, thereby realize the gaseous environment cathodic protection.Solid electrolyte coating has physical properties such as good bonding force, impact toughness, can solidify rapidly, even film layer, and production technology is simple, and cost performance is high.For being directly exposed to ocean platform atmospheric region pipeline in the gaseous environment, not only increased etch-proof validity, and significantly improved Economy with the mode of anticorrosive insulation coating and gas phase cathodic protection system Combined Protection.
Description of drawings
Fig. 1 is that the ocean platform atmospheric region that the utlity model has solid electrolyte coating is used the pipeline configuration generalized section.
Fig. 2 is the A-A generalized section of Fig. 1.
Among the figure, the 1-steel pipe, 2-anticorrosive insulation coating, the 3-solid electrolyte coating, the 4-conductive coating, 5-reserves welding section, 6-reference electrode lead-in wire, 7-platinized platinum reference electrode, 8-auxiliary anode lead-in wire.
Embodiment
Embodiment 1: use pipeline to be example with an ocean platform atmospheric region with solid electrolyte coating, the utility model is done further explain.
Consult Fig. 1.The ocean platform atmospheric region that the utlity model has solid electrolyte coating is used pipeline, mainly is made up of steel pipe 1, anticorrosive insulation coating 2, solid electrolyte coating 3 and conductive coating 4, and there is the welding section 5 of reservation at steel pipe 1 two ends.
Steel pipe nominal diameter 219mm is with the outer surface derusting by sandblasting of steel pipe.Outer surface coating thickness at steel pipe is 0.25 ± 0.05mm anticorrosive insulation coating 2.Brushing three road total thickness are 1.0 ± 0.1mm solid electrolyte coating on anticorrosive insulation coating 2 surfaces.Before brushing the second road coating; Respectively 2 platinized platinum reference electrodes are embedded in the coating apart from 3 meters of pipe ends and 9 meters; The length of platinized platinum reference electrode 7 be 10mm, wide for 5mm, thickness be 0.3mm; Brushing the 3rd road is all covered the platinized platinum reference electrode behind the surface drying by electrolyte coating, and the platinized platinum reference electrode is drawn through reference electrode.Brushing three road total thickness are 0.8 ± 0.1mm conductive coating on solid electrolyte coating; When brushing the second road coating; The auxiliary anode lead-in wire is embedded in the coating, and brushing the 3rd road is all covered lead behind the surface drying by electrically-conducting paint; Reference electrode lead-in wire 6 is a copper cash with auxiliary anode lead-in wire 8, and the copper core diameter is 0.68mm.Reserve and reserve welding section each long 200mm of two ends, with above-mentioned prefabricated ocean platform atmospheric region with solid electrolyte coating with the pipeline scene of being transported to weld, construction such as repaired mouth becomes pipeline.Connect potentiostat and can move cathodic protection system, this pipeline corrosion protection reliable in quality.
Claims (3)
1. the ocean platform atmospheric region with solid electrolyte coating is used pipeline; Mainly form by steel pipe (1), anticorrosive insulation coating (2), solid electrolyte coating (3) and conductive coating (4); There is reservation welding section (5) at steel pipe (1) two ends, it is characterized in that: anticorrosive insulation coating (2), solid electrolyte coating (3) and conductive coating (4) are arranged on the outer wall of steel pipe (1) from inside to outside successively; In solid electrolyte coating (3), be embedded with platinized platinum reference electrode (7); Platinized platinum reference electrode (7) connects reference electrode lead-in wire (6); Reference electrode lead-in wire (6) radially passes conductive coating (4) and draws; In conductive coating (4), axially be embedded with auxiliary anode lead-in wire (8), auxiliary anode lead-in wire (8) passes from an end of conductive coating (4).
2. the ocean platform atmospheric region with solid electrolyte coating according to claim 1 is used pipeline, it is characterized in that: steel pipe (1) nominal diameter 114～377mm, reserve each long 150～200mm of welding section (5) two ends; The thickness of anticorrosive insulation coating (2) is 0.1～0.3mm, and the thickness of solid electrolyte coating (3) is 0.5～2mm, and the thickness of conductive coating (4) is 0.5～2mm; There is platinized platinum reference electrode (7) to embed in the solid electrolyte coating (3) respectively apart from 3 meters of pipe ends and 9 meters; The length of platinized platinum reference electrode (7) is that 10～50mm, the wide 5～20mm of being, thickness are 0.1～0.5mm; Reference electrode lead-in wire (6) and auxiliary anode lead-in wire (8) are copper cash, and the copper core diameter is 0.41～0.97mm.
3. the ocean platform atmospheric region with solid electrolyte coating according to claim 1 and 2 is used pipeline; It is characterized in that: steel pipe (1) nominal diameter 219mm, reserve welding section (5) each long 200mm of two ends, the thickness of anticorrosive insulation coating (2) is 0.25mm; The thickness of solid electrolyte coating (3) is 1mm; The thickness of conductive coating (4) is 0.8mm, has platinized platinum reference electrode (7) to embed in the solid electrolyte coating (3) respectively apart from 3 meters of pipe ends and 9 meters, the length of platinized platinum reference electrode (7) be 10mm, wide for 5mm, thickness be 0.3mm; Reference electrode lead-in wire (6) and auxiliary anode lead-in wire (8) are copper cash, and the copper core diameter is 0.68mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120241337 CN202252624U (en) | 2011-07-08 | 2011-07-08 | Pipeline provided with solid electrolyte coating and used for atmospheric zone of offshore platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120241337 CN202252624U (en) | 2011-07-08 | 2011-07-08 | Pipeline provided with solid electrolyte coating and used for atmospheric zone of offshore platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202252624U true CN202252624U (en) | 2012-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120241337 Expired - Lifetime CN202252624U (en) | 2011-07-08 | 2011-07-08 | Pipeline provided with solid electrolyte coating and used for atmospheric zone of offshore platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202252624U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982752A (en) * | 2014-05-14 | 2014-08-13 | 中工武大设计研究有限公司 | Dual side interaction cathode protection method for PCCP (prestressed concrete cylinder pipe) |
-
2011
- 2011-07-08 CN CN 201120241337 patent/CN202252624U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982752A (en) * | 2014-05-14 | 2014-08-13 | 中工武大设计研究有限公司 | Dual side interaction cathode protection method for PCCP (prestressed concrete cylinder pipe) |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |