An intelligent ship leg with pile driving function

Abstract

The application discloses an intelligent ship pile leg with a pile driving function, which comprises a first pile, a second pile, a high-pressure water pump, a nozzle, a sensor system and a controller. The first pile is internally provided with a hydraulic cylinder, the output end of the hydraulic cylinder is connected with the second pile. The high-pressure water pump is installed on the first pile, the high-pressure water pump is provided with a water flow pipeline, one end of the water flow pipeline is connected with a suction nozzle, the suction nozzle is internally provided with a filter screen, the other end of the water flow pipeline is connected with the nozzle, and the nozzle is installed on the first pile. A scraper for cleaning the outer wall of the second pile is slidably installed on the second pile, and the bottom of the second pile is provided with a taper head. The sensor system is used for detecting seabed soil parameters, and the controller is used for controlling the hydraulic cylinder and adjusting the water flow pressure of the high-pressure water pump according to the detection parameters of the sensor system. The high-pressure water pump and the nozzle are used for driving the pile, the pile insertion resistance is reduced, and the pile insertion is more smooth. The water flow pressure is adaptively adjusted through the sensor system and the controller, and different seabed soil conditions are adapted.

Description

Technical Field

[0001] This invention relates to the field of ship pile leg technology, and in particular to an intelligent ship pile leg with pile driving function. Background Technology

[0002] In aquatic engineering, the installation and removal of pile legs for self-elevating vessels or platforms is a key technical aspect to ensure operational stability. Traditional pile leg systems generally face three major technical challenges: First, during the pile installation process, the heterogeneity of seabed soil (such as a mixture of clay, sand, and gravel) makes it difficult for conventional high-pressure jetting systems to adaptively adjust jet parameters. Existing technologies mostly adopt a single water jet mode with a fixed pressure (usually 20-30 MPa), which suffers from insufficient penetration in hard clay layers (requiring repeated pile driving, leading to an energy consumption increase of over 40%), while in soft sand... The existing pile driving system suffers from several problems. First, excessive scouring can cause the pile legs to tilt. Second, during long-term operation in seawater, barnacles, algae, and other organisms can densely adhere to the surface of the pile legs (measured to a thickness of up to 50mm after 6 months), increasing the resistance of subsequent insertion and extraction operations by 30%-50%. Third, existing pile driving systems often use bolt-fixed filter structures for water filtration, which are easily clogged by tiny shell fragments (particle size <1mm) in turbid seawater. These require shutdown and cleaning every 72 hours on average, and traditional disassembly methods require specialized tools and are time-consuming, severely impacting operational efficiency. To address these issues, there is an urgent need to develop a pile leg system that integrates intelligent pile driving, self-cleaning maintenance, and real-time monitoring, breaking through existing technological bottlenecks through collaborative innovation between mechanical structures. Summary of the Invention

[0003] Purpose of the invention: To address the shortcomings of existing pile legs, which have a fixed pile driving pressure, cannot adapt to different seabed soil conditions, and are prone to the adhesion or entry of debris on the surface and inside, this invention provides an intelligent ship pile leg with pile driving function, which can adjust the pile driving pressure according to different seabed soil conditions and is easy to clean.

[0004] Technical Solution: To solve the above problems, this invention employs an intelligent ship pile leg with pile driving function, including a No. 1 pile, a No. 2 pile, a high-pressure water pump, a nozzle, a sensor system, and a controller. The No. 1 pile is equipped with a hydraulic cylinder, the output end of which is connected to the No. 2 pile. The high-pressure water pump is installed on the No. 1 pile and has a water flow pipeline. One end of the water flow pipeline is connected to a suction nozzle containing a filter screen, and the other end of the water flow pipeline is connected to the nozzle, which is also installed on the No. 1 pile. A scraper for cleaning the outer wall of the No. 2 pile is slidably installed on the No. 2 pile, and a cone-shaped head is located at the bottom of the No. 2 pile. The sensor system is used to detect seabed soil parameters, and the controller is used to control the hydraulic cylinder and adjust the water flow pressure of the high-pressure water pump according to the parameters detected by the sensor system.

[0005] Furthermore, the nozzle is annular and is arranged around the lower outer wall of pile number one.

[0006] Furthermore, the sensor system includes an optical fiber pressure sensor and an acoustic porosity detector installed at the bottom of the No. 2 pile. The optical fiber pressure sensor is used to detect the foundation reaction force of the soil, and the acoustic porosity detector is used to detect the soil density.

[0007] Furthermore, it also includes a monitoring system, which includes vibration sensors, tilt sensors, and strain sensors. The vibration sensor is installed inside pile number one to monitor the working status of the hydraulic cylinder. The tilt sensor and strain sensor are installed inside pile number two. The tilt sensor is used to monitor the tilt angle of pile number two, and the strain sensor is used to monitor the bending stress of pile number two.

[0008] Furthermore, when the tilt sensor detects that the tilt angle of pile No. 2 exceeds the preset value, the controller adjusts the extension and retraction of the hydraulic cylinder and the water pressure of the high-pressure water pump to pressurize and liquefy the soil in a specific area so that the tilt angle of pile No. 2 returns to the preset value range.

[0009] Furthermore, a closed cavity is provided inside the No. 1 pile, and a turbine generator is installed inside the cavity. A water flow pipeline is connected to both sides of the cavity so that the water flowing through the water flow pipeline drives the turbine generator to generate electricity.

[0010] Furthermore, the scraper is ring-shaped and is arranged around the outer wall of the No. 2 pile. The scraper is edged with neodymium magnets to adhere to the outer wall of the No. 2 pile.

[0011] Furthermore, the outer wall of the No. 1 pile is provided with a guide slide, and the outer wall of the No. 1 pile is also surrounded by an annular movable plate. The inner side of the movable plate is provided with a groove that matches the shape of the guide slide, and the guide slide is located in the groove. The movable plate is connected to the scraper through a connecting rod. The scraper can be moved up and down on the outer wall of the No. 2 pile by pushing and pulling the movable plate up and down.

[0012] Furthermore, the inner wall of the suction nozzle is provided with multiple slots, and the filter screen is provided with multiple cavities. A compression spring is installed in the cavity, and one end of the compression spring is connected to a plug. A pull rope is also connected to the plug. The ends of the multiple pull ropes are gathered into a single rope. By pulling the single rope, the plug is pulled out of the slot.

[0013] Furthermore, the pull rope is made of ultra-high molecular weight polyethylene fiber braided rope, and the core of the pull rope is embedded with aramid tensile fibers.

[0014] Beneficial effects: Compared with the prior art, the significant advantages of this invention are (1) the high-pressure water pump and nozzle are used to flush the pile, reducing the resistance to pile insertion and making the pile insertion smoother; (2) the water pressure is adaptively adjusted by the sensor system and controller to adapt to different underwater soil conditions; (3) a turbine generator is installed inside the pile leg to make full use of the high-pressure water flow and realize energy regeneration; (4) an integrated sliding scraper is set to facilitate cleaning of the pile leg; (5) a detachable filter screen is set at the suction nozzle to prevent impurities from entering the water flow pipeline and causing blockage, and the filter screen is easy to disassemble and replace. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the pile leg of the present invention;

[0016] Figure 2 This is a schematic diagram of the pile leg structure at another angle of the present invention;

[0017] Figure 3 This is a cross-sectional view of the pile leg of the present invention;

[0018] Figure 4 This is a schematic diagram of the scraper and guide structure of the present invention;

[0019] Figure 5 This is a schematic diagram of the nozzle and filter structure of the present invention;

[0020] Figure 6 This is a schematic diagram of the internal structure of the filter screen of the present invention. Detailed Implementation

[0021] like Figures 1 to 3 As shown in this embodiment, an intelligent ship pile leg with pile driving function includes a No. 1 pile 2, a No. 2 pile 3, a high-pressure water pump 4, a nozzle 5, a sensor system, a monitoring system, and a controller. A hydraulic cylinder 8 is installed inside the No. 1 pile 2, and the output end 9 of the hydraulic cylinder 8 is connected to the No. 2 pile 3. A cone head 14 is provided at the bottom of the No. 2 pile 3. The No. 1 pile 2 and the No. 2 pile 3 form the main body 1 of the pile leg. A closed cavity is provided at the top of the No. 1 pile 2, and a turbine generator 18 is installed in this cavity.

[0022] A high-pressure water pump 4 is installed on the outer wall of pile 2. Water flow pipes 6 are connected to both the upper and lower sides of the high-pressure water pump 4. The upper water flow pipe 6 passes through a closed cavity at the top of pile 2, and a suction nozzle 7 is connected to its end. The lower water flow pipe 6 is connected to a nozzle 5. The nozzle 5 is annular and surrounds the lower outer wall of pile 2. High-pressure water is drawn by the high-pressure water pump 4 and sprayed out from the nozzle 5 after passing through the water flow pipes 6. When the high-pressure water flows through the turbine, it drives the turbine generator 18 blades to rotate, causing the generator rotor to cut magnetic field lines and generate electricity. Seawater is also used to cool the high-pressure water pump, reducing system temperature rise and energy consumption.

[0023] like Figure 4 As shown, a guide slide 19 is provided on the outer wall of pile 2, with its axis parallel to the axis of the pile leg. A ring-shaped movable plate 21 also surrounds the outer wall of pile 2. The inner side of the movable plate 21 has a groove matching the shape of the guide slide 19, within which the guide slide 19 is located. The movable plate 21 is connected to a scraper 22 via a connecting rod 23. The scraper 22 is ring-shaped and surrounds the outer wall of pile 3, and its edge is wrapped with neodymium magnets to adhere to the outer wall of pile 3. Pushing and pulling the movable plate 21 up and down moves the scraper 22 up and down on the outer wall of pile 3. The scraper 22 is made of high-hardness stainless steel, and its inner edge maintains a precise gap of 0.5-1mm with the surface of the pile leg. During the up-and-down scraping process, it can effectively remove biological attachments such as barnacles and algae, while avoiding damage to the anti-corrosion coating of the pile body.

[0024] The sensor system includes a fiber optic pressure sensor 15 and an acoustic porosity meter 17 installed at the bottom of pile 2 (3). The fiber optic pressure sensor 15 detects the soil foundation reaction force, and the acoustic porosity meter 17 detects the soil density. The monitoring system includes a vibration sensor 10, an inclination sensor 12, and a strain sensor 13. The vibration sensor 10 is installed in pile 1 (2) to monitor the working status of the hydraulic cylinder 8. The inclination sensor 12 and strain sensor 13 are installed in pile 2 (3). The inclination sensor 12 monitors the tilt angle of pile 2 (3), and the strain sensor 13 monitors the bending stress of pile 2 (3). The monitoring system monitors the working status of the pile legs in real time to ensure their stability. The controller controls the hydraulic cylinder 8 and adjusts the water pressure of the high-pressure water pump 4 according to the parameters detected by the sensor system.

[0025] like Figure 5 and Figure 6 As shown, the inner wall of the suction nozzle 7 has four equally spaced slots 25, and the filter screen 24 has four cavities 26 inside. A compression spring 29 is installed in each cavity 26. One end of the compression spring 29 is connected to a plug 27, and a pull rope 30 is connected to the plug 27. The ends of the four pull ropes 30 converge into a single rope at the center of the filter screen 24. The compression spring 29 is made of 316 stainless steel, and the pull ropes 30 are made of ultra-high molecular weight polyethylene fiber braided rope, with aramid tensile fibers embedded in the core. The pull ropes use a 12-strand braiding process, achieving a breaking strength of 800 kgf. In its natural state, the plug 27 is inserted into the slot 25 under the force of the compression spring 29, forming a mechanical self-locking mechanism, thus securely installing the filter screen 24 at the water inlet end of the suction nozzle 7. To remove the filter screen 24, pull the single rope to pull the plug 27 out of the slot 25.

[0026] The working principle of this invention is as follows: During pile driving, the controller first controls the hydraulic cylinder 8 to extend, causing the cone head 14 of pile 3 to extend and insert into the water. Soil data is detected by the fiber optic pressure sensor 15 and the acoustic porosity detector 17. Based on the detected data, the controller adjusts the water pressure of the high-pressure water pump 4, spraying a ring-shaped high-pressure jet at the nozzle 5 to liquefy the soil around the cone head 14, effectively reducing the resistance during pile insertion. During pile driving, the pile may tilt. When the tilt sensor 12 detects that the tilt angle of pile 3 exceeds a preset value, the controller adjusts the extension and retraction of the hydraulic cylinder 8 and the water pressure of the high-pressure water pump 4 to liquefy the soil in a specific area, restoring the tilt angle of pile 3 to within the preset range. During pile extraction, the nozzle 5 continuously scours the soil around the cone head 14, breaking the adhesion between the pile and the soil, preventing pile-soil adhesion, and shortening the extraction time. After the pile is brought ashore, marine organisms and debris attached to the pile can be cleaned with a scraper.

Claims

1. An intelligent ship pile leg with pile driving function, characterized in that, The system includes a No. 1 pile (2), a No. 2 pile (3), a high-pressure water pump (4), a nozzle (5), a sensor system, and a controller. The No. 1 pile (2) is equipped with a hydraulic cylinder (8), and the output end (9) of the hydraulic cylinder (8) is connected to the No. 2 pile (3). The high-pressure water pump (4) is installed on the No. 1 pile (2), and the high-pressure water pump (4) is equipped with a water flow pipeline (6). One end of the water flow pipeline (6) is connected to a suction nozzle (7), and the suction nozzle (7) is equipped with a filter screen (24). The other end of the water flow pipeline (6) is connected to the nozzle (5), and the nozzle (5) is installed on the No. 1 pile (2). A scraper (22) for cleaning the outer wall of the No. 2 pile (3) is slidably installed on the No. 2 pile (3), and a cone head (14) is provided at the bottom of the No. 2 pile (3). The sensor system is used to detect seabed soil parameters, and the controller is used to control the hydraulic cylinder (8) and adjust the water flow pressure of the high-pressure water pump (4) according to the parameters detected by the sensor system. The first pile (2) has a closed cavity, in which a turbine generator (18) is installed. A water flow pipe (6) is connected to both sides of the closed cavity so that the water flowing through the water flow pipe (6) drives the turbine generator (18) to generate electricity. The scraper (22) is annular and is set around the outer wall of the second pile (3). The scraper (22) is edged with neodymium magnets to be attracted to the outer wall of the second pile (3). The outer wall of the first pile (2) is provided with a guide strip (19). The outer wall of the first pile (2) is also surrounded by an annular movable plate (21). The inner side of the movable plate (21) is provided with a groove that matches the shape of the guide strip (19). The slide bar (19) is located in the groove; the movable plate (21) is connected to the scraper (22) through the connecting rod (23); by pushing and pulling the movable plate (21) up and down, the scraper (22) is driven to move up and down on the outer wall of the second pile (3); the inner wall of the suction nozzle (7) is provided with multiple slots (25), the filter screen (24) is provided with multiple cavities (26), a compression spring (29) is installed in the cavity (26), one end of the compression spring (29) is connected to the plug (27), and the plug (27) is also connected to the pull rope (30), the tail ends of multiple pull ropes (30) are gathered into a total rope; by pulling the total rope, the plug (27) is pulled out of the slot (25); It also includes a monitoring system, which includes a vibration sensor (10), an inclination sensor (12), and a strain sensor (13). The vibration sensor (10) is installed in the first pile (2) to monitor the working status of the hydraulic cylinder (8). The inclination sensor (12) and the strain sensor (13) are installed in the second pile (3). The inclination sensor (12) is used to monitor the tilt angle of the second pile (3), and the strain sensor (13) is used to monitor the bending stress of the second pile (3). When the tilt sensor (12) detects that the tilt angle of the second pile (3) exceeds the preset value, the controller adjusts the extension and retraction of the hydraulic cylinder (8) and the water flow pressure of the high-pressure water pump (4) to press and liquefy the soil in a specific area so that the tilt angle of the second pile (3) returns to the preset value range.

2. The intelligent ship leg with pile driving function as described in claim 1, characterized in that, The nozzle (5) is ring-shaped and is arranged around the lower outer wall of the first pile (2).

3. The intelligent ship leg with pile driving function as described in claim 1, characterized in that, The sensor system includes an optical fiber pressure sensor (15) and an acoustic porosity detector (17) installed at the bottom of the second pile (3). The optical fiber pressure sensor (15) is used to detect the foundation reaction force of the soil, and the acoustic porosity detector (17) is used to detect the soil density.

4. The intelligent ship leg with pile driving function as described in claim 1, characterized in that, The pull rope (30) is made of ultra-high molecular weight polyethylene fiber braided rope, and the core of the pull rope (30) is embedded with aramid tensile fiber.

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