Deep-sea wind power foundation steel pile anti-corrosion structure and anti-corrosion implementation method thereof

Abstract

The application discloses a kind of deep-sea wind power foundation steel pile anticorrosion structure and its anticorrosion implementation method, including wind power foundation platform body, the bottom of the wind power foundation platform body is uniformly fixedly connected with foundation steel pile body, the outer side wall bottom of the foundation steel pile body is equipped with bottom base pipe, the top of the bottom base pipe is uniformly equipped with support pipe;The application is initially protected to foundation steel pile body by using concrete pouring body, reduces the impact force caused by seawater to foundation steel pile body, and can obstruct seawater, avoid seawater and foundation steel pile body directly contact, then epoxy resin layer is driven to fully adhere to foundation steel pile body by the heat shrinkable tape backing of shrinkage, water vapor is obstructed by heat shrinkable tape backing and epoxy resin layer through foundation steel pile body, water vapor and foundation steel pile body are avoided to contact, to increase the anticorrosion protection to deep-sea wind power foundation steel pile, improve the service life of deep-sea wind power foundation steel pile.

Description

Technical Field

[0001] This invention relates to the field of anti-corrosion technology for steel piles used in wind power foundations, specifically to an anti-corrosion structure for steel piles used in deep-sea wind power foundations and a method for achieving anti-corrosion. Background Technology

[0002] Wind power is the world's fastest-growing green energy technology. While the construction of onshore wind farms is developing rapidly, people have noticed some limitations of onshore wind energy utilization, such as large land area and noise pollution. Due to the abundant offshore wind energy resources and the feasibility of current technology, the ocean will become a rapidly developing wind power market. Offshore wind farms are on the verge of large-scale development. The wind turbine foundation is the supporting platform for offshore wind turbines, and the foundation steel piles are steel structure piles buried deep in the sea to support the wind turbine foundation. The stability of the wind turbine foundation steel piles determines whether the wind turbine can operate normally.

[0003] Traditional deep-sea wind turbine foundation steel piles are highly susceptible to corrosion due to the fact that most of the foundation steel piles are usually located in seawater. To improve the corrosion resistance of the foundation steel piles, anti-corrosion coatings are typically applied. However, the anti-corrosion performance of these coatings gradually decreases over time, allowing the foundation steel piles to come into direct contact with seawater, which affects the anti-corrosion effect and reduces the service life of the deep-sea wind turbine foundation steel piles. Therefore, this paper proposes an anti-corrosion structure for deep-sea wind turbine foundation steel piles and its implementation method. Summary of the Invention

[0004] The purpose of this invention is to provide a corrosion-resistant structure for deep-sea wind power foundation steel piles and a method for achieving corrosion resistance, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A corrosion-resistant structure for deep-sea wind power foundation steel piles includes a wind power foundation platform. Foundation steel piles are uniformly fixedly connected to the bottom of the wind power foundation platform. A bottom base pipe is sleeved on the bottom of the outer side wall of the foundation steel pile. A support pipe is uniformly arranged above the bottom base pipe. A heat-shrinkable tape backing is sleeved on the outer side wall of the foundation steel pile. An adhesive layer is uniformly coated on the inner side wall of the heat-shrinkable tape backing. An epoxy resin layer is uniformly coated on one side of the adhesive layer.

[0007] Preferably, a support ring is fixedly connected to the bottom of the inner wall of the bottom base tube, and one end of the heat shrinkable tape backing is fixedly connected to one end of the support ring.

[0008] Preferably, a connecting ring is fixedly connected to the bottom of each support tube, and threaded grooves are opened on the top of the inner sidewalls of both the bottom base tube and the support tube, with the outer sidewall of the connecting ring threadedly connected to the inner sidewall of the threaded groove.

[0009] Preferably, the inner sidewall of the support ring is provided with exhaust holes evenly, and a prefabricated connecting seat is fixedly connected to the middle of the upper surface of the wind power foundation platform.

[0010] Preferably, a support frame is fixedly connected to the bottom of the inner wall of the bottom base pipe, and the inner walls of both the bottom base pipe and the support pipe are filled with concrete castings.

[0011] A method for corrosion protection of steel piles for deep-sea wind power foundations includes the following steps:

[0012] S1. Move the foundation steel pile body, put the bottom base pipe and heat shrinkable tape backing on the bottom of the outer wall of the foundation steel pile body, and then use heating equipment to heat the heat shrinkable tape backing, so that the heat shrinkable tape backing shrinks due to heat and drives the adhesive layer and epoxy resin layer to adhere to the outer wall of the foundation steel pile body.

[0013] S2. Insert the foundation steel piles and bottom foundation pipe into the seabed using a pile driver and fix them in place;

[0014] S3. The movable support pipe is connected and fixed to the bottom base pipe using a connecting ring, so that the bottom base pipe and the support pipe are completely fitted onto the outer wall of the foundation steel pile.

[0015] S4. Use drainage equipment to drain the seawater between the connecting ring, support pipe and heat shrinkable tape backing.

[0016] S5. Insert the support frame into the bottom base pipe and the support pipe, and weld it to the inner bottom wall of the bottom base pipe.

[0017] S6. Using concrete pouring equipment, concrete is poured between the support pipe and the heat shrinkable tape backing to form a concrete casting body, thus completing the installation of the anti-corrosion structure.

[0018] S7. By using concrete casting, heat shrinkable tape backing, and epoxy resin layer to cover the outer wall of the foundation steel pile, direct contact between seawater and the foundation steel pile is avoided, thus improving the service life of the deep-sea wind power foundation steel pile.

[0019] Preferably, in step S1, the air between the foundation steel pile and the epoxy resin layer is squeezed by the shrinkable heat-shrinkable tape backing, and then the squeezed air is discharged through the exhaust hole so that the epoxy resin layer and the foundation steel pile can be fully bonded.

[0020] Preferably, in step S3, the connecting ring is rotated by rotating the support tube, and the rotating connecting ring uses a threaded groove to fix the support tube to the bottom base tube.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] This invention utilizes cast concrete to provide initial protection for the foundation steel piles, reducing the impact of seawater on the piles and preventing direct contact between seawater and the piles. Then, a shrinkable heat-shrinkable backing tape ensures a thorough bond between the epoxy resin layer and the pile, effectively blocking moisture from penetrating the piles and preventing direct contact. This enhances the corrosion protection of the deep-sea wind turbine foundation steel piles and extends their service life. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0025] Figure 3 This is a cross-sectional view of the bottom base tube and support tube of the present invention;

[0026] Figure 4 This is a cross-sectional view of the bottom base tube of the present invention;

[0027] Figure 5 This is a schematic diagram of the axial structure of the support frame of the present invention;

[0028] Figure 6 This is a flowchart of the steps of the present invention.

[0029] In the diagram: 101, wind turbine foundation platform; 102, prefabricated connecting seat; 103, foundation steel pile; 201, bottom base pipe; 202, connecting ring; 203, support pipe; 204, heat shrinkable tape backing; 205, adhesive layer; 206, epoxy resin layer; 41, support ring; 42, vent hole; 43, threaded groove; 44, support frame; 45, concrete casting. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0031] Please see Figure 1-6The present invention provides a technical solution: a corrosion-resistant structure for deep-sea wind power foundation steel piles, including a wind power foundation platform 101, foundation steel piles 103 uniformly fixedly connected to the bottom of the wind power foundation platform 101, a bottom base pipe 201 sleeved on the bottom of the outer side wall of the foundation steel pile 103, a support pipe 203 uniformly arranged above the bottom base pipe 201, a heat shrinkable tape backing 204 sleeved on the outer side wall of the foundation steel pile 103, an adhesive layer 205 uniformly coated on the inner side wall of the heat shrinkable tape backing 204, and an epoxy resin layer 206 uniformly coated on one side of the adhesive layer 205.

[0032] In this embodiment, specifically: a support ring 41 is fixedly connected to the bottom of the inner wall of the bottom base tube 201, and one end of the heat shrinkable tape backing 204 is fixedly connected to one end of the support ring 41; the support ring 41 provides support for one end of the heat shrinkable tape backing 204.

[0033] In this embodiment, specifically: a connecting ring 202 is fixedly connected to the bottom of the support tube 203, and a threaded groove 43 is opened on the top of the inner sidewall of the bottom base tube 201 and the support tube 203, and the outer sidewall of the connecting ring 202 is threadedly connected to the inner sidewall of the threaded groove 43.

[0034] In this embodiment, specifically: exhaust holes 42 are evenly provided on the inner sidewall of the support ring 41, and a prefabricated connecting seat 102 is fixedly connected to the middle of the upper surface of the wind power foundation 101; the prefabricated connecting seat 102 is used to install and fix the offshore wind power generation.

[0035] In this embodiment, specifically: a support frame 44 is fixedly connected to the bottom of the inner wall of the bottom base pipe 201, and the inner walls of both the bottom base pipe 201 and the support pipe 203 are filled with concrete castings 45; the support frame 44 provides support for the concrete castings 45, thereby improving the impact resistance of the concrete castings 45.

[0036] A method for corrosion protection of steel piles for deep-sea wind power foundations includes the following steps:

[0037] S1. Move the foundation steel pile 103, put the bottom base pipe 201 and heat shrinkable tape backing 204 on the bottom of the outer wall of the foundation steel pile 103, and then use heating equipment to heat the heat shrinkable tape backing 204, so that the heat shrinkable tape backing 204 shrinks due to heat and drives the adhesive layer 205 and epoxy resin layer 206 to adhere to the outer wall of the foundation steel pile 103.

[0038] S2. Insert the foundation steel piles 103 and the bottom foundation pipe 201 into the seabed using a pile driver and fix them in place;

[0039] S3. The movable support pipe 203 is connected and fixed to the bottom base pipe 201 by the connecting ring 202, so that the bottom base pipe 201 and the support pipe 203 are completely fitted onto the outer wall of the foundation steel pile body 103.

[0040] S4. Use drainage equipment to drain the seawater between the connecting ring 202, the support pipe 203 and the heat shrinkable tape backing 204.

[0041] S5. Insert the support frame 44 into the bottom base tube 201 and the support tube 203, and weld it to the inner bottom wall of the bottom base tube 201.

[0042] S6. Using concrete pouring equipment, concrete is poured between the support pipe 203 and the heat shrinkable tape backing 204 to form a concrete casting body 45, thus completing the installation of the anti-corrosion structure.

[0043] S7. By using concrete casting body 45, heat shrinkable tape backing 204 and epoxy resin layer 206 to cover the outer wall of foundation steel pile body 103, the direct contact between seawater and foundation steel pile body 103 is avoided, thus improving the service life of deep-sea wind power foundation steel pile.

[0044] In this embodiment, specifically: in S1, the air between the foundation steel pile 103 and the epoxy resin layer 206 is squeezed by the shrinkable heat shrinkable backing 204, and then the squeezed air is discharged through the exhaust hole 42 so that the epoxy resin layer 206 and the foundation steel pile 103 can be fully bonded; the air between the epoxy resin layer 206 and the foundation steel pile 103 is discharged through the exhaust hole 42.

[0045] In this embodiment, specifically: in S3, the connecting ring 202 is rotated by rotating the support tube 203, and the rotating connecting ring 202 uses the threaded groove 43 to fix the support tube 203 and the bottom base tube 201; the connecting ring 202 uses the threaded groove 43 to fix the support tube 203 and the bottom base tube 201.

[0046] The working principle or structural principle is as follows: During use, the foundation steel pile 103 is first moved so that the bottom base pipe 201 and heat-shrinkable backing tape 204 are fitted onto the bottom outer wall of the foundation steel pile 103. Then, the heat-shrinkable backing tape 204 is fully heated using heating equipment, causing it to shrink and adhere the adhesive layer 205 and epoxy resin layer 206 to the outer wall of the foundation steel pile 103. The shrinking heat-shrinkable backing tape 204 also compresses the air between the foundation steel pile 103 and the epoxy resin layer 206. This compressed air is then expelled through the vent 42, allowing the epoxy resin layer 206 to adhere to the outer wall of the foundation steel pile 103. 06 is fully fitted with the foundation steel pile 103, and then the foundation steel pile 103 and the bottom base pipe 201 are inserted into the seabed and fixed using a pile driver. Then, the support pipe 203 is moved to drive the connecting ring 202 to be fitted onto the foundation steel pile 103. Then, by rotating the support pipe 203, the connecting ring 202 is rotated. The rotating connecting ring 202 uses the threaded groove 43 to fix the support pipe 203 and the bottom base pipe 201. Then, the seawater between the connecting ring 202, the support pipe 203 and the heat shrinkable tape backing 204 is drained using drainage equipment. Then, the support frame 44 is erected on the connecting ring 202. Between the support pipe 203 and the heat-shrinkable tape backing 204, the bottom of the support frame 44 is welded to the inner bottom wall of the bottom base pipe 201. Then, using concrete pouring equipment, concrete is poured between the support pipe 203 and the heat-shrinkable tape backing 204 to form a concrete casting body 45, completing the installation of the anti-corrosion structure. Then, multiple foundation steel piles 103 and the anti-corrosion structure are installed and fixed in sequence. Then, using hoisting equipment, the wind turbine foundation platform 101 and the prefabricated connecting seat 102 are erected and fixed on the multiple foundation steel piles 103. The prefabricated connecting seat 102 is used to install the offshore wind power generation. After the overall equipment is installed, the foundation steel pile 103 is initially protected by the bottom base pipe 201, support pipe 203 and concrete pouring body 45, which reduces the impact of seawater on the foundation steel pile 103 and can block seawater to avoid direct contact between seawater and the foundation steel pile 103. Then, the heat shrinkable tape backing 204 and epoxy resin layer 206 block water vapor that penetrates the foundation steel pile 103, preventing water vapor from contacting the foundation steel pile 103, increasing the corrosion protection of the deep-sea wind power foundation steel pile and improving the service life of the deep-sea wind power foundation steel pile.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for preventing corrosion of a steel pile of a deep-sea wind power foundation, characterized in that, The method is based on a deep-sea wind power foundation steel pile anti-corrosion structure, including a wind power foundation platform (101), with foundation steel piles (103) uniformly fixedly connected to the bottom of the wind power foundation platform (101), a bottom base pipe (201) sleeved on the bottom of the outer wall of the foundation steel pile (103), a support pipe (203) uniformly arranged above the bottom base pipe (201), a heat shrinkable tape backing (204) sleeved on the outer wall of the foundation steel pile (103), an adhesive layer (205) uniformly coated on the inner wall of the heat shrinkable tape backing (204), and an epoxy resin layer (206) uniformly coated on one side of the adhesive layer (205); a support ring (41) is fixedly connected to the bottom of the inner wall of the bottom base pipe (201), and the heat shrinkable tape backing... One end of the liner (204) is fixedly connected to one end of the support ring (41); the bottom of the support pipe (203) is fixedly connected to a connecting ring (202); the top of the inner wall of the bottom base pipe (201) and the support pipe (203) are both provided with threaded grooves (43); the outer wall of the connecting ring (202) is threadedly connected to the inner wall of the threaded groove (43); the inner wall of the support ring (41) is uniformly provided with exhaust holes (42); a prefabricated connecting seat (102) is fixedly connected to the middle of the upper surface of the wind power foundation platform (101); a support frame (44) is fixedly connected to the bottom of the inner wall of the bottom base pipe (201); the inner walls of the bottom base pipe (201) and the support pipe (203) are both filled with concrete castings (45). The method includes the following steps: S1. Move the foundation steel pile (103), put the bottom base pipe (201) and heat shrinkable backing (204) on the bottom of the outer wall of the foundation steel pile (103), and then use heating equipment to heat the heat shrinkable backing (204) so ​​that the heat shrinkable backing (204) shrinks due to heat and drives the adhesive layer (205) and epoxy resin layer (206) to adhere to the outer wall of the foundation steel pile (103); S2. Insert the foundation steel piles (103) and the bottom foundation pipe (201) into the seabed using a pile driver and fix them in place; S3. The movable support pipe (203) is connected and fixed to the bottom base pipe (201) using the connecting ring (202), so that the bottom base pipe (201) and the support pipe (203) are completely fitted onto the outer wall of the foundation steel pile body (103); S4. Use drainage equipment to drain the seawater between the connecting ring (202), the support pipe (203) and the heat shrinkable tape backing (204); S5. Insert the support frame (44) into the bottom base tube (201) and the support tube (203), and weld it to the inner bottom wall of the bottom base tube (201); S6. Using concrete pouring equipment, concrete is poured between the support pipe (203) and the heat shrinkable tape backing (204) to form a concrete pouring body (45), thus completing the installation of the anti-corrosion structure. S7. The outer wall of the foundation steel pile (103) is covered by using concrete casting (45), heat shrinkable tape backing (204) and epoxy resin layer (206); In S1, the air between the foundation steel pile (103) and the epoxy resin layer (206) is squeezed by the shrinking heat shrinkable backing (204), and then the squeezed air is discharged through the exhaust hole (42) so that the epoxy resin layer (206) and the foundation steel pile (103) can be fully bonded. In S3, the connecting ring (202) is rotated by rotating the support tube (203), and the rotating connecting ring (202) uses the threaded groove (43) to fix the support tube (203) to the bottom base tube (201).

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