A replacement device for underwater piles in offshore wind power

Abstract

This invention discloses a replacement device for underwater piles in offshore wind power, comprising a main body (1) and a tip (2). The tip includes an expansion section (21) and a reducing section (22). The upper end of the expansion section is connected to the bottom of the main body, and the lower end is connected to the reducing section. Multiple hydraulic racks are installed on the side wall of the expansion section. Each hydraulic rack has a hydraulic cavity inside, which is connected to a hydraulic system. The outer side of the hydraulic rack is covered with racks. This invention can adjust the connection strength between the pipe pile and the replacement tip by adjusting the tension force provided by the hydraulic system. Furthermore, this invention can be used to adjust the underwater pipe pile, thereby improving the installation accuracy and quality of the underwater pipe pile.

Description

Technical Field

[0001] This invention relates to marine engineering structures, and in particular to a replacement device for underwater piles in offshore wind power. Background Technology

[0002] During the construction of offshore wind power facilities, it is necessary to build marine fixed structures at sea. The construction of marine fixed structures requires first driving pipe piles into the seabed using a pile hammer. For the construction of underwater pipe piles, a combination of a replacement driving device and a surface pile hammer is often used. In this way, the replacement driving device can be used to allow the pile hammer to work on the water surface, which facilitates the installation control of the underwater pipe piles and allows the underwater pipe piles to be sunk to the predetermined depth.

[0003] Currently, the replacement pipe used in offshore underwater pile construction is mostly of the insertion type, which means that the replacement pipe is inserted into the pipe pile from the top. The replacement pipe and the pipe pile can move relative to each other, but the installation accuracy of the pipe pile cannot be adjusted by the replacement pipe, nor can the pipe pile be lifted by the replacement pipe, which is inconvenient for offshore construction. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to address the shortcomings of existing underwater pile construction methods that cannot adjust underwater piles by replacement. The present invention provides a replacement device for offshore wind power underwater piles that can adjust underwater piles.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A replacement device for an underwater pile in offshore wind power includes a main body and a tip. The tip includes an expansion section and a reducing section. The upper end of the expansion section is connected to the bottom of the main body, and the lower end is connected to the reducing section. Multiple hydraulic racks are embedded in the side wall of the expansion section. Each hydraulic rack has a hydraulic cavity inside, which is connected to a hydraulic system. The outer side of the hydraulic rack is covered with racks.

[0007] This invention utilizes a hydraulic rack made of high-hardness material (the hydraulic rack mentioned herein refers to a rack with an internal hydraulic cavity that can be tensioned or contracted under hydraulic pressure) installed on the insertion tip. When the replacement device of this invention is inserted into the underwater pipe pile, hydraulic pressure is supplied through the hydraulic system, which tensions the hydraulic rack between the replacement device and the underwater pipe pile, increasing the friction between the insertion tip and the underwater pipe pile, thus connecting the replacement device and the underwater pipe pile together. During the project, the installation angle and height of the underwater pile can be adjusted using the replacement device, thereby improving the installation quality and accuracy of the underwater pipe pile.

[0008] Preferably, the expansion section is cylindrical and the diameter-changing section is an inverted frustum-shaped cone to facilitate matching with the pile hammer of the pile driver and with the inner cavity of the pipe pile.

[0009] Preferably, the hydraulic rack is embedded in the side wall of the expansion section.

[0010] Preferably, the expansion section is hollow inside, the inner side of the hydraulic rack is placed inside the expansion section, and the outer side extends out of the side wall of the expansion section. A hydraulic interface is provided on the inner side of the hydraulic rack, and the hydraulic cavity is connected to the hydraulic system through the hydraulic interface so as to install matching hydraulic components using the inner cavity of the insertion tip and the replacement body.

[0011] Preferably, the body and the tip are both made of high-strength ship plate, and the body is matched with the pile hammer, while the tip is matched with the pipe pile. In use, the tip is inserted into the top of the pipe pile to guide and position it.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] (1) The replacement device of the present invention can be directly inserted into the top of the underwater pipe pile. It is lightweight and can be installed at sea by an auxiliary crane. The installation is simple and convenient.

[0014] (2) The present invention can adjust the connection strength between the pipe pile and the replacement tip by adjusting the hydraulic pressure (tension force) provided by the hydraulic system according to the weight of the underwater pipe pile. Therefore, the device of the present invention has a wide range of applications.

[0015] (3) The present invention can improve the installation accuracy and quality of underwater pipe piles, improve the safety of marine engineering, and has good economic and social benefits. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the replacement device for the underwater piles of offshore wind power according to the present invention.

[0018] Figure 2 This is a schematic diagram showing the structure and installation state of the hydraulic rack of the present invention. Detailed Implementation

[0019] The present invention will be further described below with reference to specific preferred embodiments, but this does not limit the scope of protection of the present invention.

[0020] For ease of description, the relative positions of the components, such as top, bottom, left, right, etc., are described according to the layout direction of the accompanying drawings and do not limit the structure of this patent.

[0021] Please see Figure 1 , Figure 2 An embodiment of the underwater pile replacement device for offshore wind power according to the present invention includes a main body 1 and a tip 2. The main body 1 is cylindrical, and its diameter matches the pile hammer of the pile driver. The tip 2 includes an expansion section 21 and a reducing section 22. The expansion section 21 is cylindrical, and the reducing section 22 is an inverted frustum-shaped cone. The upper end of the expansion section 21 is connected to the bottom of the main body 1, and the lower end of the expansion section 21 is integrally connected to the reducing section 22. The diameters of the expansion section 21 and the reducing section 22 match the diameter of the pipe pile.

[0022] The expansion section 21 is hollow inside. Multiple hydraulic racks 3 made of high-hardness material are embedded in the sidewall of the expansion section 21, with the inner side of each rack 3 positioned inside the expansion section 21 and the outer side extending outwards from the sidewall. Each hydraulic rack 3 has a hydraulic cavity 31 inside, which is connected to a hydraulic system. The outer side of the hydraulic rack 3 is covered with racks 33, and the inner side has a hydraulic interface 32. The hydraulic cavity 31 is connected to the hydraulic system via the hydraulic interface 31.

[0023] The main body 1 and the tip 2 are both made of high-strength ship plates. When in use, the tip 2 is inserted into the top of the underwater pipe pile. When the pile hammer applies force to the submerged pile, the tip 2 serves as a guide and positioner. Simultaneously, hydraulic pressure is provided by the hydraulic system, which tensions the hydraulic rack 3 between the submerged pile and the underwater pipe pile, increasing the friction between the tip 2 and the underwater pipe pile. This connects the submerged pile and the underwater pipe pile, allowing the installation angle and height of the underwater pile to be adjusted, thereby improving the installation quality and accuracy of the underwater pipe pile.

[0024] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can make many possible variations and modifications to the technical solution of the present invention, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A replacement device for underwater piles in offshore wind power, comprising a main body (1) and a tip (2), characterized in that: The insertion tip includes an expansion section (21) and a variable diameter section (22). The upper end of the expansion section is connected to the bottom of the main body, and the lower end is connected to the variable diameter section. Multiple hydraulic racks are installed on the side wall of the expansion section. Each hydraulic rack has a hydraulic cavity inside. The hydraulic cavity is connected to the hydraulic system, and the outer side of the hydraulic rack is covered with racks. The expansion section is hollow inside, and the hydraulic rack is embedded in the side wall of the expansion section. The inner side of the hydraulic rack is placed inside the expansion section, and the outer side extends out of the side wall of the expansion section. Each hydraulic rack is installed coaxially with the expansion section.

2. The replacement device for underwater piles in offshore wind power according to claim 1, characterized in that, The expansion section is cylindrical, and the diameter-changing section is an inverted frustum-shaped cone.

3. The replacement device for underwater piles in offshore wind power according to claim 1, characterized in that, A hydraulic interface is provided on the inner side of the hydraulic rack, and the hydraulic chamber is connected to the hydraulic system via the hydraulic interface.

4. The replacement device for offshore wind power underwater piles according to any one of claims 1-3, characterized in that, The main body and the tip are both made of ship plates.

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