Maritime work mass concrete pile foundation anti-corrosion device

Abstract

The utility model relates to a maritime work mass concrete pile foundation anti-corrosion device which comprises an outer-layer protective shell, a middle-layer spacing shell and an inner-layer anti-corrosion shell, and the outer-layer protective shell, the middle-layer spacing shell and the inner-layer anti-corrosion shell are all cylindrical shells formed by assembling two semi-cylindrical shells. The inner-layer anti-corrosion shell, the middle-layer spacing shell and the outer-layer protection shell are sequentially arranged on the outer side of a concrete pile foundation in a sleeving mode from inside to outside, a first reaction cavity is formed between the outer-layer protection shell and the middle-layer spacing shell, and a second reaction cavity is formed between the inner-layer anti-corrosion shell and the middle-layer spacing shell. A plurality of first reaction rods are horizontally arranged on the middle-layer interval shell in an array mode, a plurality of second reaction rods are horizontally arranged on the inner-layer anti-corrosion shell in an array mode, and hydrophobic materials used for reducing the seawater permeation speed are clamped between the connecting pieces at the two ends of the two semi-cylindrical shells. And the anti-corrosion capability of the concrete pile foundation is obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of corrosion protection technology for large-volume marine concrete, specifically a corrosion protection device for large-volume marine concrete pile foundations. Background Technology

[0002] Offshore large-volume concrete is a type of concrete developed for large-volume casting in marine engineering. The construction of bridges, platforms, or docks in the ocean requires a large amount of concrete, and the construction of bridges, platforms, or docks requires the construction of concrete pile foundations first. Part of the concrete pile foundation is constantly immersed in seawater and will suffer from seawater corrosion, which will greatly affect the service life of the pile foundation. Corrosion protection treatment of concrete pile foundation is required. Therefore, a corrosion protection device for offshore large-volume concrete pile foundation is proposed. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a corrosion protection device for large-volume concrete pile foundations in marine engineering, addressing the above-mentioned shortcomings.

[0004] To solve the above technical problems, the present invention adopts the following technical solution:

[0005] A corrosion protection device for large-volume marine concrete pile foundations includes an outer protective shell, a middle spacer shell, and an inner anti-corrosion shell. Each of these shells is a cylindrical shell assembled from two semi-cylindrical shells. The inner anti-corrosion shell, middle spacer shell, and outer protective shell are sequentially fitted onto the outside of the concrete pile foundation from the inside out. Multiple inner anti-corrosion shells, middle spacer shells, and outer protective shells are stacked and spliced ​​to form a complete corrosion protection device. A first reaction chamber is formed between the outer protective shell and the middle spacer shell, and a second reaction chamber is provided between the inner anti-corrosion shell and the middle spacer shell. Multiple first reaction rods, all located inside the first reaction chamber, are horizontally arranged in an array on the middle spacer shell, and multiple second reaction rods, all located inside the second reaction chamber, are horizontally arranged in an array on the inner anti-corrosion shell. Both the first and second reaction rods are used to undergo an oxidation reaction with seawater. A hydrophobic material for reducing seawater permeation is clamped between the connecting plates at both ends of the two semi-cylindrical shells.

[0006] Furthermore, the outer protective shell is made of titanium alloy, the middle spacer shell is made of stainless steel, and the inner anti-corrosion shell is made of copper alloy.

[0007] Furthermore, the top and bottom of the outer protective shell are respectively provided with inclined surfaces for positioning and docking with the two adjacent outer protective shells, and the connection between the two adjacent outer protective shells is fixedly welded.

[0008] Furthermore, the connecting pieces at both ends of the two semi-cylindrical shells of the inner anti-corrosion shell are clamped in the inner wall of the middle spacer shell, and the connecting pieces at both ends of the two semi-cylindrical shells of the middle spacer shell are clamped in the inner wall of the outer protective shell. The middle spacer shell is fixed by the inner anti-corrosion shell, and the outer protective shell is fixed by the middle spacer shell.

[0009] Furthermore, the inner and outer side walls of the outer protective shell, the middle spacer shell, and the inner anti-corrosion shell are all coated with epoxy resin anti-corrosion coating.

[0010] Furthermore, the first reaction rod is made of cast iron.

[0011] Furthermore, the second reaction rod is made of carbon steel.

[0012] Furthermore, the hydrophobic material is a polytetrafluoroethylene sheet.

[0013] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages:

[0014] This invention utilizes a three-layer structure—an outer protective shell, a middle spacer shell, and an inner anti-corrosion shell—to form a multi-layered protective system, effectively resisting seawater erosion and significantly improving the corrosion resistance of concrete pile foundations. Reaction chambers are established between the outer protective shell and the middle spacer shell, and between the inner anti-corrosion shell and the middle spacer shell, respectively, containing first and second reaction rods. These reaction rods react with seawater to consume corrosive substances, further slowing down the corrosion rate of the pile foundation. The outer protective shell is made of titanium alloy, the middle spacer shell of stainless steel, and the inner anti-corrosion shell of copper alloy; all materials possess excellent corrosion resistance and can remain stable in seawater for extended periods, prolonging the service life of the anti-corrosion device. Multiple shells are joined together to form a complete anti-corrosion device, with hydrophobic anti-corrosion fabric placed between the connecting pieces, ensuring both the device's airtightness and improved corrosion resistance. Furthermore, the interlocking fixing of the inner and middle shells with connecting pieces simplifies the installation process and improves construction efficiency. The inner and outer walls of the shell are coated with epoxy resin anti-corrosion coating, which further enhances the corrosion resistance of the anti-corrosion device and ensures that the device can operate stably for a long time in harsh marine environments.

[0015] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a top view of the present invention.

[0018] The attached diagram lists the components represented by each number as follows:

[0019] 1. Outer protective shell; 2. Middle spacer shell; 3. Inner anti-corrosion shell; 4. First reaction chamber; 5. Second reaction chamber; 6. First reaction rod; 7. Second reaction rod; 8. Hydrophobic material. Detailed Implementation

[0020] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation 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.

[0022] like Figure 1-2 As shown, a corrosion protection device for large-volume marine concrete pile foundations includes an outer protective shell 1, a middle spacer shell 2, and an inner anti-corrosion shell 3. Each of these shells is a cylindrical shell assembled from two semi-cylindrical shells. The inner anti-corrosion shell 3, middle spacer shell 2, and outer protective shell 1 are sequentially fitted onto the outside of the concrete pile foundation from the inside out. Multiple inner anti-corrosion shells 3, middle spacer shells 2, and outer protective shells 1 are stacked and spliced ​​to form a complete corrosion protection device. The outer protective shell 1 and the middle spacer shell 2 are connected in series. A first reaction chamber 4 is formed between the two spacer shells 2. A second reaction chamber 5 is provided between the inner anti-corrosion shell 3 and the middle spacer shell 2. A plurality of first reaction rods 6, all located inside the first reaction chamber 4, are arranged in a horizontal array on the middle spacer shell 2. A plurality of second reaction rods 7, all located inside the second reaction chamber 5, are arranged in a horizontal array on the inner anti-corrosion shell 3. The first reaction rods 6 and the second reaction rods 7 are both used to react with seawater. A hydrophobic material 8 for reducing the seawater permeation rate is sandwiched between the connecting pieces at both ends of the two semi-cylindrical shells.

[0023] In one embodiment, the outer protective shell 1 is made of titanium alloy, the middle spacer shell 2 is made of stainless steel, and the inner anti-corrosion shell 3 is made of copper alloy.

[0024] In one embodiment, the top and bottom of the outer protective shell 1 are respectively provided with inclined surfaces for positioning and docking with two adjacent outer protective shells, and the connection between the two adjacent outer protective shells 1 is fixedly welded.

[0025] In one embodiment, the connecting pieces at both ends of the two semi-cylindrical shells of the inner anti-corrosion shell 3 are clamped in the inner wall of the middle spacer shell 2, and the connecting pieces at both ends of the two semi-cylindrical shells of the middle spacer shell 2 are clamped in the inner wall of the outer protective shell 1. The middle spacer shell 2 is fixed by the inner anti-corrosion shell 3, and the outer protective shell 1 is fixed by the middle spacer shell 2.

[0026] In one embodiment, the inner and outer side walls of the outer protective shell 1, the middle spacer shell 2, and the inner anti-corrosion shell 3 are all coated with epoxy resin anti-corrosion coating.

[0027] In one implementation, the first reaction rod 6 is made of cast iron.

[0028] In one embodiment, the second reaction rod 7 is made of carbon steel.

[0029] In one embodiment, the hydrophobic material 8 is a polytetrafluoroethylene sheet.

[0030] In this utility model, the two adjacent inner anti-corrosion shells 3 and the middle spacer shell 2 are stacked together, and the two semi-circular shells of the outer protective shell 1, the middle spacer shell 2 and the inner anti-corrosion shell 3 are riveted or welded at the connecting piece.

[0031] The working process of this utility model is as follows: The outer protective shell 1, the middle spacer shell 2, and the inner anti-corrosion shell 3 are each assembled with two corresponding semi-cylindrical shells to form a complete cylindrical shell, which is then sequentially fitted onto the outside of the concrete pile foundation from the inside out. Multiple assembled inner anti-corrosion shells 3, middle spacer shells 2, and outer protective shells 1 are joined together vertically to form a complete anti-corrosion device covering the entire concrete pile foundation. The polytetrafluoroethylene (PTFE) plate reduces the seawater penetration rate, allowing seawater to gradually penetrate into the first reaction chamber 4 between the outer protective shell 1 and the middle spacer shell 2, and the second reaction chamber 5 between the inner anti-corrosion shell 3 and the middle spacer shell 2. Inside the first reaction chamber 4 and the second reaction chamber 5, the first reaction rod 6 and the second reaction rod 7 form a galvanic cell with the middle spacer shell 2 and the inner anti-corrosion shell 3, respectively. The first reaction rod 6 and the second reaction rod 7 act as cathodes and undergo an oxidation reaction with seawater, consuming corrosive substances in the seawater, thereby slowing down the corrosion of the concrete pile foundation by seawater. The multi-layer shell structure of the anti-corrosion device and the epoxy resin anti-corrosion coating applied to the inner and outer sides of the shell together provide a physical barrier for the concrete pile foundation, preventing seawater from directly contacting the pile foundation surface and further enhancing the anti-corrosion effect.

[0032] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. A corrosion protection device for large-volume concrete pile foundations in marine engineering, characterized in that, The device includes an outer protective shell (1), a middle spacer shell (2), and an inner anti-corrosion shell (3). Each of these shells is a cylindrical shell assembled from two semi-cylindrical shells. The inner anti-corrosion shell (3), middle spacer shell (2), and outer protective shell (1) are sequentially fitted onto the outside of the concrete pile foundation from the inside out. Multiple inner anti-corrosion shells (3), middle spacer shells (2), and outer protective shells (1) are stacked and spliced ​​to form a complete anti-corrosion device. A gap is formed between the outer protective shell (1) and the middle spacer shell (2). A first reaction chamber (4) is provided, and a second reaction chamber (5) is provided between the inner anti-corrosion shell (3) and the middle spacer shell (2). Multiple first reaction rods (6) located inside the first reaction chamber (4) are arranged in a horizontal array on the middle spacer shell (2). Multiple second reaction rods (7) located inside the second reaction chamber (5) are arranged in a horizontal array on the inner anti-corrosion shell (3). The first reaction rods (6) and the second reaction rods (7) are both used to react with seawater. A hydrophobic material (8) for reducing the seawater permeation rate is sandwiched between the connecting pieces at both ends of the two semi-cylindrical shells.

2. The anti-corrosion device for large-volume marine concrete pile foundations according to claim 1, characterized in that, The outer protective shell (1) is made of titanium alloy, the middle spacer shell (2) is made of stainless steel, and the inner anti-corrosion shell (3) is made of copper alloy.

3. The anti-corrosion device for large-volume marine concrete pile foundations according to claim 1, characterized in that, The top and bottom of the outer protective shell (1) are respectively provided with inclined surfaces for positioning and docking with the two adjacent outer protective shells above and below, and the connection between the two adjacent outer protective shells (1) is fixedly welded.

4. The anti-corrosion device for large-volume marine concrete pile foundations according to claim 3, characterized in that, The connecting pieces at both ends of the two semi-cylindrical shells of the inner anti-corrosion shell (3) are clamped in the inner wall of the middle spacer shell (2), and the connecting pieces at both ends of the two semi-cylindrical shells of the middle spacer shell (2) are clamped in the inner wall of the outer protective shell (1). The middle spacer shell (2) is fixed by the inner anti-corrosion shell (3), and the outer protective shell (1) is fixed by the middle spacer shell (2).

5. The corrosion protection device for large-volume marine concrete pile foundations according to claim 1, characterized in that, The outer protective shell (1), the middle spacer shell (2), and the inner anti-corrosion shell (3) are all coated with epoxy resin anti-corrosion coating on both their inner and outer side walls.

6. The anti-corrosion device for large-volume marine concrete pile foundations according to claim 1, characterized in that, The first reaction rod (6) is made of cast iron.

7. The anti-corrosion device for large-volume marine concrete pile foundations according to claim 1, characterized in that, The second reaction rod (7) is made of carbon steel.

8. The corrosion protection device for large-volume marine concrete pile foundations according to claim 1, characterized in that, The hydrophobic material (8) is a polytetrafluoroethylene sheet.

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