Composite cathode protection system of offshore platform stand column

Abstract

The utility model discloses a composite cathode protection system of an offshore platform stand column, and discloses a composite cathode protection system of an offshore platform stand column, which can combine a dual protection mechanism of sacrificial anode protection and impressed current protection and realize energy conservation and environmental protection through solar power supply. A combined type cathode protection system of an offshore platform stand column comprises a stand column body, a sacrificial anode module, an impressed current protection module and a solar power supply module. The sacrificial anode module provides cathode protection for the stand column body through electrochemical reaction. The impressed current protection module is arranged on the offshore platform and connected with the stand column body. And the impressed current protection module is used for automatically starting and providing supplementary current protection when the allowance of the sacrificial anode module is insufficient. The solar power supply module is used for providing electric energy for the impressed current protection module. The sacrificial anode is combined with an impressed current technology, so that the corrosion protection system can continuously work for more than ten years.

Description

Technical Field

[0001] This utility model relates to the field of marine engineering corrosion protection technology, and in particular to a composite cathodic protection system for offshore platform columns. Background Technology

[0002] Offshore drilling platforms are constantly exposed to seawater, making their support columns susceptible to corrosion. Traditional cathodic protection methods primarily employ sacrificial anode protection, but this is hampered by the high cost of anode material consumption and replacement, and its limited effectiveness in certain situations. While impressed current protection can provide a stronger protective current, its reliance on an external power source increases system complexity and maintenance costs.

[0003] Single sacrificial anodes wear out quickly under harsh operating conditions and cannot be replaced in time; traditional impressed current systems rely on continuous power supply, resulting in poor power supply stability at sea; anode arrangement methods (such as CN222008062U) lack environmental adaptability design; and there is a lack of coordinated protection schemes for tidal range areas and fully immersed areas. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a composite cathodic protection system for offshore platform masts, which combines a dual protection mechanism of sacrificial anode protection and impressed current protection, and achieves energy saving and environmental protection through solar power.

[0005] A composite cathodic protection system for a marine platform column according to an embodiment of the present invention includes: a column body, a sacrificial anode module, an impressed current protection module, and a solar power supply module. The sacrificial anode module is disposed on the outer surface of the column body and provides cathodic protection to the column body through an electrochemical reaction. The impressed current protection module is disposed on the marine platform and connected to the column body. The impressed current protection module is used to automatically activate and provide supplementary current protection when the sacrificial anode module has insufficient capacity. The solar power supply module is disposed on the marine platform and connected to the impressed current protection module, and provides power to the impressed current protection module.

[0006] The system offers at least the following beneficial effects: A composite cathodic protection system for an offshore platform column includes a column body, a sacrificial anode module, an impressed current protection module, and a solar power supply module. The sacrificial anode module is disposed on the outer surface of the column body. The sacrificial anode module provides cathodic protection to the column body through an electrochemical reaction. The impressed current protection module is disposed on the offshore platform and connected to the column body. The impressed current protection module automatically activates and provides supplementary current protection when the sacrificial anode module's current is insufficient. The solar power supply module is disposed on the offshore platform and connected to the impressed current protection module. The solar power supply module provides power to the impressed current protection module. Combining sacrificial anode and impressed current technologies with an independent solar power supply system ensures continuous operation of the corrosion protection system for more than ten years, significantly improving the stability of the corrosion protection system.

[0007] According to some embodiments of the present invention, the sacrificial anode module includes a contoured clamp and an anode block. The contoured clamp is fixed to the surface of the column body by fasteners; the anode block is fixed to the contoured clamp by connecting bolts.

[0008] According to some embodiments of the present invention, the sacrificial anode module further includes a conductive gel layer, which is bonded to the inner surface of the conformal clamp, and the thickness of the conductive gel layer is 5-20mm.

[0009] According to some embodiments of this utility model, the conformal clamp is provided with a mounting plate, and the anode block is fixed to the mounting plate by connecting bolts.

[0010] According to some embodiments of the present invention, the conductive gel layer is disposed between the mounting plate and the anode block.

[0011] According to some embodiments of this utility model, the anode block is provided with an arc-shaped surface, and the arc-shaped surface fits into the contoured clamp.

[0012] According to some embodiments of this utility model, the external current protection module includes a power supply module, a current regulator, and a connecting cable. The current output by the power supply module is regulated by the current regulator and then connected to the column body through the connecting cable.

[0013] According to some embodiments of the present invention, the solar power supply module includes a lifting cabin, a lifting mechanism, and a foldable photovoltaic panel assembly. The lifting cabin is located below the deck of the offshore platform, the lifting mechanism is located at the bottom of the lifting cabin, the foldable photovoltaic panel assembly is connected to the lifting mechanism, the foldable photovoltaic panel assembly can extend out of the lifting cabin and unfold to generate electricity through sunlight, and the foldable photovoltaic panel assembly is electrically connected to the impressed current protection module.

[0014] According to some embodiments of the present invention, the conductive gel layer is formed by mixing and curing conductive carbon powder and organosilicon resin in a mass ratio of 1:3.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0018] Figure 2 This is a top view of an embodiment of the present utility model;

[0019] Figure 3 for Figure 2 Sectional view of section AA;

[0020] Figure 4 for Figure 2 A magnified view of a section at point B in the middle;

[0021] Figure 5 for Figure 3 A magnified view of a section at point C;

[0022] Figure 6 This is a schematic diagram of the structure of the solar power supply module according to an embodiment of the present invention;

[0023] Figure 7 This is a schematic diagram of the structure of the conformal clamp according to an embodiment of the present utility model;

[0024] Figure 8 This is a cross-sectional view of the conformal clamp according to an embodiment of the present utility model;

[0025] Figure 9 This is a schematic diagram of the structure of the anode block in an embodiment of the present invention. Detailed Implementation

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0028] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0029] Reference Figures 1 to 9 This utility model discloses a composite cathodic protection system for an offshore platform column, including a column body 10, a sacrificial anode module 20, an impressed current protection module 30, and a solar power supply module 40. The sacrificial anode module 20 is disposed on the outer surface of the column body 10. The sacrificial anode module 20 provides cathodic protection to the column body 10 through an electrochemical reaction. The impressed current protection module 30 is disposed on the offshore platform and connected to the column body 10. The impressed current protection module 30 is used to automatically activate and provide supplementary current protection when the sacrificial anode module 20 has insufficient capacity. The solar power supply module 40 is disposed on the offshore platform and connected to the impressed current protection module 30. The solar power supply module 40 provides electrical energy to the impressed current protection module 30.

[0030] It should be noted that, in the embodiments of this utility model, the sacrificial anode and the impressed current technology are creatively combined, and an independent solar power supply system is simultaneously installed to ensure that the corrosion protection system can work continuously for more than ten years, thereby greatly improving the stability of the corrosion protection system.

[0031] It should be noted that the lifespan of the sacrificial anode module 20 can be obtained through experiments. Subsequently, staff can set a threshold, such as 90% of the lifespan of the sacrificial anode module 20. The timing starts after the sacrificial anode module 20 is replaced. When 90% of the lifespan of the sacrificial anode module 20 is reached, the applied current protection module 30 is activated. Then, staff can decide when to replace and maintain the sacrificial anode module 20 based on the actual situation.

[0032] Reference Figures 1 to 9 The sacrificial anode module 20 includes a contoured clamp 21 and an anode block 22. The contoured clamp 21 is fixed to the surface of the column body 10 by fasteners. The anode block 22 is fixed to the contoured clamp 21 by connecting bolts.

[0033] Understandably, the curved shape of the contoured clamp 21 matches the outer contour of the column body 10, and together with the bolt connection structure of the anode block 22, it forms a mechanical fixing system that resists shear wave forces.

[0034] Reference Figures 1 to 9 The sacrificial anode module 20 also includes a conductive gel layer 23. The conductive gel layer 23 is bonded to the inner surface of the conformal clamp 21. The thickness of the conductive gel layer 23 is 5-20 mm.

[0035] It is worth noting that the conductive gel layer 23 forms a flexible conductive interface between the conformal clamp 21 and the column body 10, and its thickness design is adapted to both surface unevenness compensation and seawater penetration barrier requirements.

[0036] Reference Figures 1 to 9 A mounting plate 24 is provided on the conformal clamp 21. The anode block 22 is fixed to the mounting plate 24 by connecting bolts.

[0037] The independently installed mounting plate 24 forms a transition interface structure between the anode block 22 and the contour clamp 21, creating a non-destructive detachable connection system.

[0038] Reference Figures 1 to 9 A conductive gel layer 23 is provided between the mounting plate 24 and the anode block 22.

[0039] It is understandable that the conductive gel layer 23 between the mounting plate 24 and the anode block 22 constructs a three-dimensional conductive path, forming a multi-level current transmission structure.

[0040] Reference Figures 1 to 9 The anode block 22 has an arc-shaped surface 221. The arc-shaped surface 221 fits into the contour clamp 21.

[0041] It is understandable that the arc-shaped surface 221 of the anode block 22 and the contoured clamp 21 form a curved surface-to-curved surface contact structure, which effectively disperses the shear stress generated by the impact of the ocean current.

[0042] Reference Figures 1 to 9 The external current protection module 30 includes a power supply module, a current regulator, and a connecting cable. The current output by the power supply module is regulated by the current regulator and then connected to the column body 10 via the connecting cable.

[0043] Reference Figures 1 to 9 The solar power module 40 includes a lift cabin 41, a lifting mechanism 42, and a foldable photovoltaic panel assembly 43. The lift cabin 41 is located below the deck of the offshore platform. The lifting mechanism 42 is located at the bottom of the lift cabin 41. The foldable photovoltaic panel assembly 43 is connected to the lifting mechanism 42. The foldable photovoltaic panel assembly 43 can extend out of the lift cabin 41 and unfold to generate electricity using sunlight. The foldable photovoltaic panel assembly 43 is electrically connected to an impressed current protection module 30.

[0044] Understandably, the lifting mechanism 42 inside the lift cabin 41 can retract the foldable photovoltaic panel group 43 into the lift cabin 41 for protection when the weather is bad, so as to avoid damage to the foldable photovoltaic panel group 43 caused by extreme marine weather.

[0045] Reference Figure 9 The conductive gel layer 23 is formed by mixing and curing conductive carbon powder and organosilicon resin in a mass ratio of 1:3.

[0046] It is understandable that the two-component composite structure of the conductive gel layer 23 forms an interpenetrating network system of conductive network and matrix resin, which enhances the structural stability of the material.

[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A composite cathodic protection system for a marine platform mast, characterized in that, include: Column body (10); A sacrificial anode module (20) is disposed on the outer surface of the column body (10), and the sacrificial anode module (20) provides cathodic protection to the column body (10) through an electrochemical reaction; An impressed current protection module (30) is installed on the offshore platform and connected to the column body (10). The impressed current protection module (30) is used to automatically activate and provide supplementary current protection when the sacrificial anode module (20) is insufficient. A solar power supply module (40) is installed on an offshore platform and connected to the impressed current protection module (30). The solar power supply module (40) is used to provide power to the impressed current protection module (30).

2. The composite cathodic protection system for a marine platform column according to claim 1, characterized in that, The sacrificial anode module (20) includes a contoured clamp (21) and an anode block (22). The contoured clamp (21) is fixed to the surface of the column body (10) by fasteners; the anode block (22) is fixed to the contoured clamp (21) by connecting bolts.

3. The composite cathodic protection system for a marine platform column according to claim 2, characterized in that, The sacrificial anode module (20) also includes a conductive gel layer (23), which is bonded to the inner surface of the conformal clamp (21) and has a thickness of 4-6 mm.

4. The composite cathodic protection system for a marine platform column according to claim 3, characterized in that, The conformal clamp (21) is provided with an mounting plate (24), and the anode block (22) is fixed to the mounting plate (24) by connecting bolts.

5. The composite cathodic protection system for a marine platform column according to claim 4, characterized in that, The conductive gel layer (23) is disposed between the mounting plate (24) and the anode block (22).

6. A composite cathodic protection system for a marine platform column according to claim 2, characterized in that, The anode block (22) is provided with an arc-shaped surface (221), which fits into the contoured clamp (21).

7. A composite cathodic protection system for a marine platform column according to claim 2, characterized in that, The external current protection module (30) includes a power module, a current regulator and a connecting cable. The current output by the power module is regulated by the current regulator and then connected to the column body (10) through the connecting cable.

8. The composite cathodic protection system for a marine platform column according to claim 1, characterized in that, The solar power module (40) includes a lift cabin (41), a lifting mechanism (42), and a foldable photovoltaic panel assembly (43). The lift cabin (41) is located below the deck of the offshore platform. The lifting mechanism (42) is located at the bottom of the lift cabin (41). The foldable photovoltaic panel assembly (43) is connected to the lifting mechanism (42). The foldable photovoltaic panel assembly (43) can extend out of the lift cabin (41) and unfold to generate electricity through sunlight. The foldable photovoltaic panel assembly (43) is electrically connected to the impressed current protection module (30).

9. A composite cathodic protection system for a marine platform column according to claim 3, characterized in that, The conductive gel layer (23) is formed by mixing and curing conductive carbon powder and organosilicon resin in a mass ratio of 1:3.

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