Visual in-pile desilting device for offshore jacket foundation

Abstract

The utility model relates to the technical field of offshore wind power foundation construction, in particular to a visual in-pile desilting device for an offshore jacket foundation, which aims to solve the problems of low desilting efficiency and higher safety risk in the prior art, and specifically comprises a sludge suction pipe, an air supply pipe and a liquid supply pipe, a sludge inlet is formed in the bottom of the sludge suction pipe, and a sludge outlet is formed in the bottom of the liquid supply pipe. A sludge outlet is formed in the top of the sludge suction pipe, an air inlet is formed in the side part of the sludge suction pipe, one end of the air supply pipe is communicated with an external air source, and the other end of the air supply pipe is connected with the air inlet for air supply; a sludge collecting cover is fixedly arranged below the sludge suction pipe, and a sludge collecting cavity is formed in the sludge collecting cover; according to the utility model, the mud gathering cover is arranged, so that the mud in the pile is effectively gathered and guided to the mud inlet of the mud suction pipe under the adsorption action of the mud suction pipe, and the mud diffusion is effectively reduced; the second camera on the side of the mud gathering cover can assist in observation and positioning during installation, assistance of a diver is not needed during installation, and the safety risk is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore wind power foundation construction, in particular to a visual pile internal silt removal device for an offshore conductor frame foundation. Background Art

[0002] With the rapid development of clean energy, offshore wind power, as a green and renewable energy form, is gradually becoming an important part of the global energy structure transformation. As a major foundation form of offshore wind turbines, the construction quality of the jacket foundation is directly related to the stable operation and long-term safety of the wind turbines.

[0003] The jacket foundation is mainly composed of four foundation piles and the jacket. The jacket legs are inserted into the foundation piles and fixed by grouting to form a stable support structure. However, after the pile sinking construction is completed, a large amount of silt often remains in the piles. If the silt is not cleaned in time, it will directly affect the insertion depth and fixing effect of the jacket legs, and then affect the stability of the entire wind turbine.

[0004] At present, traditional methods of dredging inside piles, such as mechanical cleaning, are difficult to be effectively applied in the construction of offshore jacket foundations due to the limitations of water depth and narrow space inside the piles. Therefore, the air lift method has become the main means of dredging at present. This method connects the air compressor and the water pump through a high-pressure hose, hangs the sludge suction pipe into the steel pipe pile, uses high-pressure water flow to disperse the silt, and sucks out the mud through the negative pressure generated by the air compressor. However, due to the open design of the sludge suction pipe and the high-pressure water gun nozzle of the air lift method, the convergence effect of the mud is not good, resulting in low dredging efficiency. At the same time, the positioning process of the dredging equipment in the underwater steel pipe pile usually requires the assistance of divers, which not only increases the construction cost, but also brings certain safety risks. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a visual pile desilting device for offshore jacket foundation which has high desilting efficiency and can effectively reduce safety risks in view of the deficiencies in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A visual pile desilting device for offshore jacket foundation, which has the following characteristics:

[0008] It comprises a mud suction pipe, an air supply pipe and a liquid supply pipe. The bottom of the mud suction pipe is provided with a mud inlet, the top of the mud suction pipe is provided with a mud outlet, and the side of the mud suction pipe is provided with an air inlet. One end of the air supply pipe is connected to an external air source, and the other end is connected to the air inlet for air supply. The air supply pipe is used to form a negative pressure in the mud suction pipe to transport the sludge from the mud inlet to the mud outlet.

[0009] A mud collecting cover is fixedly provided below the mud suction pipe, wherein a mud collecting chamber is provided in the mud collecting cover, wherein the mud collecting chamber has an annular mud guiding surface, wherein the cross section of the mud guiding surface is an arc-shaped surface gradually inclined upward from the outside to the inside, wherein the bottom end of the mud guiding surface forms a mud guiding inlet open downward, and the top end of the mud guiding surface forms a mud guiding outlet narrowed upward, wherein the mud guiding outlet is communicated with the mud inlet of the mud suction pipe and is arranged directly opposite to the mud inlet;

[0010] A plurality of nozzles are vertically arranged in the mud collecting hood, and a nozzle is correspondingly arranged at the bottom of each nozzle. The liquid supply pipe is fixedly arranged above the mud collecting hood, one end of the liquid supply pipe is connected to an external water source, and the other end passes downward through a corresponding through hole opened on the mud collecting hood and is connected to the above-mentioned nozzle for liquid supply.

[0011] The technical problem to be solved by the utility model can be further achieved through the following steps: the nozzle includes a high-pressure nozzle, the top of the high-pressure nozzle is fixedly connected to the mud collecting hood, the bottom diameter of the high-pressure nozzle is contracted to form a high-pressure nozzle, and a high-pressure nozzle is provided downward at the bottom of the high-pressure nozzle, and the height of the high-pressure nozzle is lower than the mud guide inlet.

[0012] The technical problem to be solved by the utility model can be further achieved by the following steps: a plurality of high-pressure nozzles are evenly arranged around the mud guide outlet.

[0013] The technical problem to be solved by the utility model can be further achieved through the following steps: the nozzle includes a rotating nozzle, the top of the rotating nozzle is fixedly connected to the mud collecting hood, the bottom of the rotating nozzle is rotatably installed with a rotating nozzle, the side of the rotating nozzle is provided with a plurality of rotating nozzles, and the height of the rotating nozzles is lower than the mud guide inlet.

[0014] The technical problem to be solved by the utility model can be further achieved by the following steps: an L-shaped mud outlet elbow is provided at the top of the mud suction pipe, one end of the mud outlet elbow is downwardly connected to the mud outlet of the mud suction pipe, and the other end extends laterally as a mud discharge end, and a lifting ear is fixedly provided at the top of the mud outlet elbow.

[0015] The technical problem to be solved by the utility model can be further achieved by the following steps: a first camera facing the sludge discharge end and used for observing the quality of the discharged sludge is provided on the sludge discharge elbow.

[0016] The technical problem to be solved by the utility model can be further achieved through the following steps: a plurality of liquid supply pipes are provided, and each of them corresponds to the nozzle one by one.

[0017] The technical problem to be solved by the utility model can be further achieved by the following steps: a second camera facing downwards for observing and positioning during installation is provided on the side of the mud collecting cover.

[0018] The technical problem to be solved by the utility model can be further achieved through the following steps: the air supply pipe is a U-shaped bent pipe fixedly installed on the side wall of the mud suction pipe.

[0019] The technical problem to be solved by the utility model can be further achieved through the following steps: a mounting seat is provided in the rotating nozzle, a rotating rod is connected to the center of the mounting seat through a bearing, a spiral blade is provided on the rotating rod for driving the rotating rod to rotate when water flows through, and the lower end of the rotating rod is fixedly connected to the rotating nozzle.

[0020] Compared with the prior art, the beneficial effects of the utility model are as follows: by setting a mud collecting hood, the silt in the pile is effectively gathered and guided to the mud inlet of the mud suction pipe under the adsorption effect of the mud suction pipe, thereby effectively reducing the diffusion of mud; the water flow sprayed from the high-pressure, rotating nozzle disperses and cuts the silt, making it easier to be sucked into the mud suction pipe, thereby effectively improving the dredging efficiency; by setting a first camera on the mud outlet elbow, the quality of the discharged silt is observed in real time, so as to judge the dredging effect and adjust the dredging strategy in time; the second camera on the side of the mud collecting hood can assist in observation and positioning during installation, and no diver assistance is required during installation, thereby effectively reducing safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The structure of the utility model is shown in FIG. Figure 1 ;

[0022] Figure 2 The structure of the utility model is shown in FIG. Figure 2 ;

[0023] Figure 3 It is a top view schematic diagram of the utility model;

[0024] Figure 4 for Figure 3 The B-direction cross-sectional schematic diagram;

[0025] Figure 5 for Figure 4 The enlarged view of point C in the figure;

[0026] In the figure: 1-mud suction pipe; 2-air supply pipe; 3-liquid supply pipe; 4-mud collecting hood; 5-nozzle; 6-nozzle; 7-mud outlet elbow; 8-lifting ear; 9-first camera; 10-second camera;

[0027] 101-mud inlet; 102-mud outlet; 103-air inlet;

[0028] 401 - mud collecting chamber; 402 - mud guiding surface; 403 - mud guiding inlet; 404 - mud guiding outlet;

[0029] 501-high pressure nozzle; 502-rotating nozzle;

[0030] 601-high pressure nozzle; 602-rotating nozzle;

[0031] 5021-mounting seat; 5022-rotating rod; 5023-spiral blade. DETAILED DESCRIPTION

[0032] The specific technical solutions of the present invention are further described below so that those skilled in the art can further understand the present invention, but it does not constitute a limitation on the rights thereof.

[0033] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0034] Please refer to Figure 1-5 A visual pile desilting device for offshore jacket foundation mainly includes a mud suction pipe 1, an air supply pipe 2, a liquid supply pipe 3 and a mud collecting cover 4. The mud suction pipe 1 is made of metal material, and is provided with a mud inlet 101 at the bottom and a mud outlet 102 at the top. An L-shaped mud outlet elbow 7 is provided at the mud outlet 102, one end of the mud outlet elbow 7 is connected to the mud outlet 102, and the other end extends to the side as a mud discharge end to facilitate the discharge of mud. A lifting lug 8 is fixedly provided on the top of the mud outlet elbow 7 to facilitate the lifting and positioning of the device.

[0035] An air inlet 103 is provided on the side of the mud suction pipe 1, and one end of the air supply pipe 2 is connected to an external air source (such as an air compressor), and the other end is connected to the air inlet 103. The external air source provides compressed air, which enters the mud suction pipe 1 through the air supply pipe 2, forming a negative pressure, thereby driving the sludge to flow from the mud inlet 101 to the mud outlet 102. In this embodiment, the air supply pipe 2 adopts a U-shaped elbow design and is fixedly installed on the side wall of the mud suction pipe 1, which not only ensures the stability of the connection, but also simplifies the structure.

[0036] The mud collecting cover 4 is fixed below the mud suction pipe 1, and a mud collecting chamber 401 is provided inside the mud collecting chamber 401. The mud guiding surface 402 of the mud collecting chamber 401 (i.e., the lower surface of the cover body of the mud collecting cover 4) is annular, and its cross section is an arc-shaped design that gradually tilts upward from the outside to the inside, so that the sludge can be guided to the mud inlet 101 of the mud suction pipe 1 along the mud guiding surface 402. The bottom end of the mud guiding surface 402 forms a mud guiding inlet 403 that is open downward, and the top end forms a mud guiding outlet 404 that is narrowed upward, and the mud guiding outlet 404 is directly opposite to and connected with the mud inlet 101 of the mud suction pipe 1.

[0037] A plurality of nozzles 5 are vertically arranged in the mud hood 4, and the nozzles 5 include a high-pressure nozzle 501 and a rotating nozzle 502, and a nozzle 6 is arranged at the bottom. The top of the high-pressure nozzle 501 is fixedly connected to the mud hood 4, and the bottom pipe diameter is contracted to form a high-pressure nozzle 601, and a high-pressure nozzle is arranged at the bottom of the high-pressure nozzle 601. The top of the rotating nozzle 502 is also fixedly connected to the mud hood 4, and a rotating nozzle 602 is rotatably installed at the bottom, and a plurality of rotating nozzles are arranged on the side of the rotating nozzle 602. The above-mentioned nozzle 5 is connected to an external water source (such as a submersible pump) through a liquid supply pipe 3, and one or more liquid supply pipes 3 can be arranged. In the preferred embodiment, a plurality of liquid supply pipes 3 are arranged, and they correspond one to one with the nozzles 5 to ensure that each nozzle 5 can obtain a stable water supply. The high-pressure nozzle 501 sprays high-pressure water flow through the high-pressure nozzle 601, and the rotating nozzle 502 sprays rotating water flow through the rotating nozzle 602. The two work together to effectively disperse and stir the sludge, making it easier to be sucked into the sludge suction pipe 1.

[0038] A plurality of high-pressure nozzles 501 can be evenly arranged around the mud guide outlet 404 to ensure that the jetted water flow can cover the entire mud collecting chamber 401. At the same time, the heights of the high-pressure nozzle and the rotating nozzle are both lower than the mud guide inlet 403, so that the jetted water flow can effectively disperse the silt at the mud guide inlet 403 and avoid silt accumulation at the inlet.

[0039] A mounting seat 5021 is provided in the rotating nozzle 502. A rotating rod 5022 is connected to the center of the mounting seat 5021 through a bearing. The rotating rod 5022 is provided with a spiral blade 5023 for driving the rotating rod 5022 to rotate when water flows through. The lower end of the rotating rod 5022 is fixedly connected to the rotating nozzle 602. When water flows through the rotating nozzle 502, the spiral blade 5023 is impacted by the water flow and drives the rotating rod 5022 to rotate, which in turn drives the rotating nozzle 602 to rotate together, thereby ejecting a rotating water flow. This rotating water flow can more effectively disperse, stir and cut silt, thereby improving the dredging efficiency.

[0040] A first camera 9 facing the sludge discharge end is provided on the mud discharge elbow 7, which can observe the quality of the discharged sludge in real time, so as to judge the dredging effect. In addition, a second camera 10 facing downward is provided on the side of the mud collecting cover 4, which is used to observe the positioning during installation to ensure that the device can be accurately lowered into the pile. The first camera 9 and the second camera 10 can be fixedly installed in the corresponding positions by means of fastening bolts or clamps. Preferably, a protective cover is installed at the corresponding camera to further protect the camera assembly.

[0041] When in use, the dredging device is lowered underwater by a lifting device. When it is close to the top of the underwater steel pipe pile, the relative position of the two is observed through the second camera 10, and the lifting device is adjusted to put the dredging device into the steel pipe pile. The second camera 10 is used to observe and command the lowering until the mud hood 4 contacts the mud surface, and then the external air source and water source are turned on. The air supply pipe 2 supplies air to the mud suction pipe 1 to form a negative pressure, and the liquid supply pipe 3 supplies water to the nozzle 5 to start the dredging construction. The water flow sprayed by the high-pressure nozzle 501 and the rotating nozzle 502 disperses the silt, so that it is sucked into the mud suction pipe 1 and finally discharged through the mud outlet elbow 7. By observing the image sent back in real time by the first camera 9, the dredging effect can be judged, and the operation can be adjusted in time. When the mud concentration is reduced, the dredging position and depth can be changed.

[0042] In summary, the device has a compact structure, simple operation, strong adaptability, and can adapt to the complex and changeable construction environment at sea, reducing construction costs and safety risks, and providing strong support for the construction of offshore wind turbine foundations.

[0043] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A visual pile desilting device for offshore jacket foundation, Features: It comprises a mud suction pipe, an air supply pipe and a liquid supply pipe. The bottom of the mud suction pipe is provided with a mud inlet, the top of the mud suction pipe is provided with a mud outlet, and the side of the mud suction pipe is provided with an air inlet. One end of the air supply pipe is connected to an external air source, and the other end is connected to the air inlet for air supply. The air supply pipe is used to form a negative pressure in the mud suction pipe to transport the sludge from the mud inlet to the mud outlet. A mud collecting cover is fixedly provided below the mud suction pipe, wherein a mud collecting chamber is provided in the mud collecting cover, wherein the mud collecting chamber has an annular mud guiding surface, wherein the cross section of the mud guiding surface is an arc-shaped surface gradually inclined upward from the outside to the inside, wherein the bottom end of the mud guiding surface forms a mud guiding inlet open downward, and the top end of the mud guiding surface forms a mud guiding outlet narrowed upward, wherein the mud guiding outlet is communicated with the mud inlet of the mud suction pipe and is arranged directly opposite to the mud inlet; A plurality of nozzles are vertically arranged in the mud collecting hood, and a nozzle is correspondingly arranged at the bottom of each nozzle. The liquid supply pipe is fixedly arranged above the mud collecting hood, one end of the liquid supply pipe is connected to an external water source, and the other end passes downward through a corresponding through hole opened on the mud collecting hood and is connected to the above-mentioned nozzle for liquid supply.

2. The visual pile desilting device for offshore jacket foundation according to claim 1, Features: The nozzle comprises a high-pressure nozzle, the top of which is fixedly connected to the mud collecting hood, the bottom of which is contracted to form a high-pressure nozzle, a high-pressure nozzle is downwardly provided with a high-pressure nozzle, and the height of the high-pressure nozzle is lower than the mud guide inlet.

3. The visual pile desilting device for offshore jacket foundation according to claim 2, Features: The high-pressure nozzles are evenly arranged in plurality around the mud guide outlet.

4. The visual pile desilting device for offshore jacket foundation according to claim 1 or 2, Features: The nozzle comprises a rotating nozzle, the top of which is fixedly connected to the mud collecting hood, the bottom of which is rotatably mounted with a rotating nozzle, the side of which is provided with a plurality of rotating nozzles, the height of which is lower than the mud guiding inlet.

5. The visual pile desilting device for offshore jacket foundation according to claim 1, Features: An L-shaped mud outlet elbow is provided at the top of the mud suction pipe, one end of the mud outlet elbow is downwardly connected to the mud outlet of the mud suction pipe, and the other end extends laterally as a mud discharge end, and a lifting ear is fixedly provided on the top of the mud outlet elbow.

6. The visual pile desilting device for offshore jacket foundation according to claim 5, Features: A first camera is arranged on the mud discharge elbow, facing the mud discharge end and used for observing the quality of the discharged mud.

7. The visual pile desilting device for offshore jacket foundation according to claim 1, Features: There are a number of liquid supply pipes, which correspond to the spray pipes one by one.

8. The visual pile desilting device for offshore jacket foundation according to claim 1, Features: A second camera is arranged on the side of the mud collecting cover, facing downward, and used for observing and positioning during installation.

9. The visual pile desilting device for offshore jacket foundation according to claim 1, Features: The air supply pipe is a U-shaped bent pipe fixedly installed on the side wall of the mud suction pipe.

10. The visual pile desilting device for offshore jacket foundation according to claim 4, Features: A mounting seat is arranged in the rotating nozzle, and a rotating rod is connected to the center of the mounting seat through a bearing. The rotating rod is provided with a spiral blade which drives the rotating rod to rotate when water flows through. The lower end of the rotating rod is fixedly connected to the rotating nozzle.

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