An offshore wind power monopile foundation anti-corrosion system

Abstract

The present invention provides an offshore wind power monopile foundation anti-corrosion system, comprising: a wind power monopile foundation, a first composite cable, a first fixing device and a second fixing device, the first composite cable is arranged in the wind power monopile foundation, an auxiliary anode is arranged on the first composite cable, the first fixing device is connected to the upper end of the first composite cable, the second fixing device is connected to the lower end of the first composite cable, and the first composite cable is tensioned by the first fixing device and the second fixing device; the first fixing device comprises: a first rope, a second rope and a first connecting member; the upper end of the first composite cable is respectively connected to one end of the first rope and the second rope by the first connecting member, and the other ends of the first rope and the second rope are connected to the inner wall of the wind power monopile foundation. The present invention realizes the fixing and tightening of the upper end of the first composite cable by the first rope, the second rope and the first connecting member, replaces the traditional tensioning device, reduces the construction steps, reduces the offshore construction period, construction cost and construction difficulty, and reduces the construction risk.

Description

Technical Field

[0001] The present invention relates to the field of wind power anti-corrosion, and in particular to an offshore wind power monopile foundation anti-corrosion system. Background Art

[0002] The existing impressed current cathodic protection method for offshore wind power pile foundations mainly adopts the method of fixing the auxiliary anode on the outer wall of the wind power pile foundation. During maintenance and replacement, divers are required to perform underwater wiring removal and replacement of the auxiliary anode, which is difficult to maintain, costly, and has high risks in underwater operations. For example, CN202688452U and CN110484924A invented an impressed current cathodic protection system suitable for offshore wind power pile foundations based on the auxiliary anode form commonly used for ship outer wall protection. The auxiliary anode and reference electrode are designed to be disc-shaped. During installation, it is necessary to open holes on the surface of the pile foundation structure or prefabricate cantilever branches. The workload of on-site prefabrication and installation is large, and the construction cost is high; CN103726057A introduces an impressed current cathodic protection system for offshore wind power pile foundation structures, in which the auxiliary anode and reference electrode are designed as an integrated cantilever structure, and the auxiliary anode is a disc-shaped structure. The electrode installation structure of this system also requires prefabricated structural parts to be welded on the surface of the pile body, and is only applicable to triangular piles and conductor frame foundations, not to single pile foundations; Summary of the invention

[0003] The present invention provides an offshore wind power monopile foundation anti-corrosion system to overcome the above technical problems.

[0004] The present invention provides an offshore wind power monopile foundation anti-corrosion system, characterized in that it comprises: a wind power monopile foundation, a first composite cable, a first fixing device and a second fixing device, wherein the first composite cable is arranged inside the wind power monopile foundation, an auxiliary anode is arranged on the first composite cable, the first fixing device is connected to the upper end of the first composite cable, the second fixing device is connected to the lower end of the first composite cable, and the first composite cable is tensioned by the first fixing device and the second fixing device;

[0005] The first fixing device includes: a first rope, a second rope and a first connecting piece; the upper end of the first composite cable is connected to one end of the first rope and the second rope respectively through the first connecting piece, and the other ends of the first rope and the second rope are fixedly connected to the inner wall of the wind power monopile foundation.

[0006] Further, it also includes: a second composite cable and a first tensioning device;

[0007] The second composite cable is arranged on the outer wall of the wind turbine monopile foundation, and a reference electrode and / or an auxiliary anode are arranged on the second composite cable. The upper end of the second composite cable is connected to the first tensioning device, and the first tensioning device is fixed on the platform of the wind turbine monopile foundation. The lower end of the second composite cable is fixedly connected to the outer wall of the wind turbine monopile foundation through a lifting ear on the outer wall of the wind turbine monopile foundation or on a lifting ear panel fixed on the outer wall of the wind turbine monopile foundation.

[0008] Further, it also includes: a third composite cable and a second tensioning device;

[0009] The third composite cable is arranged on the inner wall of the wind power monopile foundation, and a reference electrode is arranged on the third composite cable. The upper end of the third composite cable is connected to the platform of the wind power monopile foundation through the second tensioning device, and the lower end of the third composite cable is fixedly connected to the inner wall of the wind power monopile foundation through a lifting lug arranged on the inner wall of the wind power monopile foundation.

[0010] Further, the second fixing device comprises: a third rope, a fourth rope and a second connecting member;

[0011] The lower end of the first composite cable is connected to one end of the third rope and the fourth rope respectively through a second connector, and the other ends of the third rope and the fourth rope are fixedly connected to the inner wall of the wind power monopile foundation.

[0012] Furthermore, the second fixing device is a weight, and the weight is connected to the lower end of the first composite cable through a second connecting member.

[0013] Furthermore, the second fixing device is a second lifting lug, the second lifting lug is fixed to the inner wall of the wind power monopile foundation, and the second lifting lug is connected to the lower end of the first composite cable.

[0014] Furthermore, the first connecting member and the second connecting member are anchor chains and / or shackles and / or Kent buckles.

[0015] Furthermore, the first connecting member and the second connecting member are three-hole plates.

[0016] Furthermore, a central axis of the second composite cable coincides with a central axis of the wind power monopile foundation.

[0017] Furthermore, there are more than two of the second composite cable and the third composite cable.

[0018] The present invention achieves fixing and tightening of the upper end of the first composite cable through the first rope, the second rope and the first connecting piece, replacing the traditional tensioning device, reducing the construction steps, shortening the offshore construction period, construction cost and construction difficulty, and reducing construction risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0021] Figure 2 Embodiment of the present invention Figure 1 A magnified view of middle;

[0022] Figure 3 Embodiment of the present invention Figure 2 Enlarged view of middle B; DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The present invention provides an offshore wind power monopile foundation anti-corrosion system, such as Figure 1 and Figure 2 As shown, it includes: a wind power monopile foundation 1, a first composite cable 2, a first fixing device and a second fixing device, wherein the first composite cable 2 is arranged inside the wind power monopile foundation 1, an auxiliary anode is arranged on the first composite cable 2, the first fixing device is connected to the upper end of the first composite cable 2, the second fixing device is connected to the lower end of the first composite cable 2, and the first composite cable 2 is tensioned by the first fixing device and the second fixing device;

[0025] The first fixing device comprises: Figure 3 As shown, a first rope 5, a second rope 6 and a first connecting piece 7; the upper end of the first composite cable 2 is connected to one end of the first rope 5 and the second rope 6 respectively through the first connecting piece 7, and the other ends of the first rope 5 and the second rope 6 are fixedly connected to the inner wall of the wind power monopile foundation 1.

[0026] Specifically, an auxiliary anode is provided on the first composite cable 2 to protect the wind power monopile foundation 1; one end of the first rope 5 and the second rope 6 are connected to the upper end of the first composite cable 2 through the first connecting piece 7, and the other end of the first rope 5 and the second rope 6 are fixedly connected to the lifting ear fixed on the inner wall of the wind power monopile foundation 1, and the two lifting ears are arranged opposite to each other to achieve the tensioning of the first composite cable 2; the lower end of the first composite cable 2 is connected to the second fixing device, and the first fixing device and the second fixing device achieve the tensioning of the first composite cable 2. The present application can achieve the tensioning of the first composite cable 2 only by the first rope 5, the second rope 6 and the first connecting piece 7, which saves costs and reduces the construction period.

[0027] Further, it also includes: a second composite cable 3 and a first tensioning device 11;

[0028] The second composite cable 3 is arranged on the outer wall of the wind turbine monopile foundation 1, and a reference electrode and / or an auxiliary anode are arranged on the second composite cable 3. The lower end of the second composite cable 3 is fixedly connected to the outer wall of the wind turbine monopile foundation 1 through a first lifting ear 14 arranged on the outer wall of the wind turbine monopile foundation 1 or on a lifting ear panel 12 fixed on the outer wall of the wind turbine monopile foundation 1.

[0029] Specifically, the second composite cable 3 is arranged on the outer wall of the wind power monopile foundation 1, and a reference electrode or an auxiliary anode is arranged on the second composite cable 3, or the reference electrode and the auxiliary anode are fixed at the same time, so as to realize the protection and corrosion monitoring of the outer wall of the wind power monopile foundation 1; the first tensioning device 11 and the first lifting ear 14 arranged on the lifting ear panel 12 on the outer wall of the wind power monopile foundation 1 are used to tension the two ends of the second composite cable 3 to prevent the second composite cable 3 from shaking when the waves surge, thereby destroying the protection and monitoring effects.

[0030] Further, it also includes: a third composite cable 4 and a second tensioning device 13;

[0031] The third composite cable 4 is arranged on the inner wall of the wind power monopile foundation 1, and a reference electrode is arranged on the third composite cable 4. The upper end of the third composite cable 4 is connected to the platform of the wind power monopile foundation 1 through the second tensioning device 13, and the lower end of the third composite cable 4 is fixedly connected to the inner wall of the wind power monopile foundation 1 through the lifting lug arranged on the inner wall of the wind power monopile foundation 1.

[0032] Specifically, the third composite cable 4 is arranged on the inner wall of the wind power monopile foundation 1, and a reference electrode is arranged on the third composite cable 4 to monitor the corrosion of the inner wall of the wind power monopile foundation 1; the second tensioning device 13 and the lifting ears on the inner wall of the wind power monopile foundation 1 are used to tension the two ends of the third composite cable 4, and the third composite cable 4 fits the inner wall of the wind power monopile foundation 1 to accurately monitor the corrosion of the inner wall of the wind power monopile foundation 1, providing effective protection for subsequent maintenance.

[0033] Further, the second fixing device comprises: a third rope 8, a fourth rope 9 and a second connecting member 10;

[0034] The lower end of the first composite cable 2 is connected to one end of the third rope 8 and the fourth rope 9 respectively through the second connector 10, and the other ends of the third rope 8 and the fourth rope 9 are fixedly connected to the inner wall of the wind power monopile foundation 1. When the wind power monopile foundation 1 is located in shallow waters, the disturbance of the waves is small, and the lower end of the first composite cable 2 can be fixed by the structure of the third rope 8, the fourth rope 9 and the second connector 10, so that the construction steps are reduced, the offshore construction period, construction cost and construction difficulty are reduced, and the construction risk is reduced.

[0035] Furthermore, the second fixing device includes: a second connecting member 10 and a weight, and the weight 15 is connected to the lower end of the first composite cable 2 through the second connecting member 10. When the wind power monopile foundation 1 is located in the deep sea, the sea wave disturbance is large, and the second fixing device needs to use a weight made of steel or concrete material to reduce the shaking of the first composite cable 2 when the sea waves surge; or a second lifting lug 16 is welded on the inner wall of the wind power monopile foundation 1, so that the lower end of the first composite cable 2 is connected to the second lifting lug 16.

[0036] Furthermore, the second fixing device is a second lifting lug 16, the second lifting lug 16 is fixed to the inner wall of the wind power monopile foundation 1, and the second lifting lug 16 is connected to the lower end of the first composite cable 2. Figure 1 The dashed line in the middle shows another way of fixing the first composite cable 2.

[0037] Furthermore, the first connecting member 7 and the second connecting member 10 are anchor chains and / or shackles and / or Kent buckles. The connecting members in the above form are easy to obtain, low in cost, and easy to replace.

[0038] Furthermore, the first connecting member 7 and the second connecting member 10 are three-eyelet plates; compared with anchor chains, shackles and Kent buckles, three-eyelet plates have better connection stability.

[0039] Furthermore, in order to enable the second composite cable to provide the best protection for the inner wall of the wind turbine monopile foundation 1 , the central axis of the first composite cable 2 coincides with the central axis of the wind turbine monopile foundation 1 .

[0040] Furthermore, in order to better maintain the wind power monopile foundation 1 and prevent its premature corrosion, the number of the second composite cable 3 and the third composite cable 4 are both more than two.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An offshore wind power monopile foundation anti-corrosion system, characterized in that: include: A wind power monopile foundation (1), a first composite cable (2), a first fixing device and a second fixing device, wherein the first composite cable (2) is arranged inside the wind power monopile foundation (1), an auxiliary anode is arranged on the first composite cable (2), the first fixing device is connected to the upper end of the first composite cable (2), the second fixing device is connected to the lower end of the first composite cable (2), and the first composite cable (2) is tensioned by the first fixing device and the second fixing device; The first fixing device comprises: a first rope (5), a second rope (6) and a first connecting piece (7); the upper end of the first composite cable (2) is connected to one end of the first rope (5) and the second rope (6) respectively through the first connecting piece (7); the other ends of the first rope (5) and the second rope (6) are fixedly connected to the inner wall of the wind power monopile foundation (1); the first rope (5) and the second rope (6) are arranged opposite to each other, and the first rope (5) and the second rope (6) are pulled against each other to tighten the first composite cable (2); It also includes: a second composite cable (3) and a first tensioning device (11); The second composite cable (3) is arranged on the outer wall of the wind turbine monopile foundation (1), a reference electrode and / or an auxiliary anode is arranged on the second composite cable (3), the upper end of the second composite cable (3) is connected to the first tensioning device (11), the first tensioning device (11) is fixed on the platform of the wind turbine monopile foundation (1), and the lower end of the second composite cable (3) is fixedly connected to the outer wall of the wind turbine monopile foundation (1) through a first lifting lug (14) arranged on the outer wall of the wind turbine monopile foundation (1) or on a lifting lug panel (12) fixed on the outer wall of the wind turbine monopile foundation (1); Also includes: a third composite cable (4) and a second tensioning device (13); The third composite cable (4) is arranged on the inner wall of the wind power monopile foundation (1), a reference electrode is arranged on the third composite cable (4), the upper end of the third composite cable (4) is connected to the platform of the wind power monopile foundation (1) through the second tensioning device (13), and the lower end of the third composite cable (4) is fixedly connected to the inner wall of the wind power monopile foundation (1); The second fixing device comprises: a third rope (8), a fourth rope (9) and a second connecting member (10); The lower end of the first composite cable (2) is connected to one end of the third rope (8) and the fourth rope (9) respectively through a second connecting member (10), and the other ends of the third rope (8) and the fourth rope (9) are fixedly connected to the inner wall of the wind power monopile foundation (1).

2. The system according to claim 1, characterized in that The second fixing device comprises: a second connecting member (10) and a weight (15), and the weight (15) is connected to the lower end of the first composite cable (2) via the second connecting member (10).

3. The system according to claim 1, characterized in that The second fixing device is a second lifting lug (16), the second lifting lug (16) is fixed to the inner wall of the wind power monopile foundation (1), and the second lifting lug (16) is connected to the lower end of the first composite cable (2).

4. The system according to claim 1 or 2, characterized in that: The first connecting member (7) and the second connecting member (10) are anchor chains and / or shackles and / or Kent buckles.

5. The system according to claim 1 or 2, characterized in that: The first connecting member (7) and the second connecting member (10) are three-hole plates.

6. The system according to claim 1 or 2, characterized in that: The central axis of the first composite cable (2) coincides with the central axis of the wind power monopile foundation (1).

7. The system according to claim 5, characterized in that There are more than two of the second composite cable (3) and the third composite cable (4).

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