Scouring pit accurate filling system for offshore wind power single pile foundation

Abstract

The utility model belongs to the field of offshore wind power, and discloses an offshore wind power single-pile foundation accurate flushing pit filling system which comprises an annular track device, a lifting device and a clamp device, the annular track device is sleeved on a pile foundation, the lifting device is arranged on the pile foundation and provided with a lifting rope, and the clamp device is arranged on the lifting device. The clamp device comprises a cantilever and clamping jaw mechanism, a transverse movement driving mechanism and a first circumferential walking mechanism. The clamping jaw mechanism is used for clamping a material conveying pipe, the transverse movement driving mechanism drives the clamping jaw mechanism to move in the radial direction, the first circumferential walking mechanism drives the whole clamp device to move in the circumferential direction, and meanwhile the lifting device achieves the function of moving in the circumferential direction through the second circumferential walking mechanism. In addition, the lifting device drives the clamp device and the annular rail device to ascend and descend, finally, movement of the clamping jaw mechanism in the circumferential direction, the radial direction and the vertical direction is achieved, a scouring pit around the pile foundation can be filled with the material conveying pipe during material conveying, and anti-scouring protection is achieved.

Description

Technical Field

[0001] The utility model relates to the field of offshore wind power, and specifically relates to a system for accurately filling scouring pits of a single-pile foundation of an offshore wind turbine. Background Technique

[0002] As a renewable energy source, offshore wind power has the advantages of being pollution-free and sustainable, and has become an important direction for the development of the modern power industry. However, there are many technical challenges in its development process, and the most prominent one is the anti-scouring problem of single-pile foundations.

[0003] The single-pile foundation is one of the main load-bearing structures of an offshore wind turbine tower, and its stability is directly related to the safety and stability of the wind power facilities. The marine environment is complex and changeable, and natural conditions such as ocean currents and wind waves often scour the sand around the tower foundation, causing it to be gradually washed away and forming "pits", which affects the stability of the single-pile foundation. Preventing the erosion and collapse of the seabed sand and ensuring the stability of the wind turbine tower and the normal operation of the wind power equipment are the main technical problems faced by offshore wind power generation.

[0004] To solve this problem, the utility model proposes a system for accurately filling scouring pits of a single-pile foundation of an offshore wind turbine. Content of the Utility Model

[0005] The purpose of the utility model is to provide a system for accurately filling scouring pits of a single-pile foundation of an offshore wind turbine to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A system for accurately filling scouring pits of a single-pile foundation of an offshore wind turbine, comprising:

[0008] An annular track device, the annular track device is sleeved on the pile foundation;

[0009] A lifting device, the lifting device is arranged on the pile foundation, and it can move circumferentially along the pile foundation, and it has a lifting rope; and

[0010] A fixture device, the fixture device is located at the lower end of the lifting device, and it includes a cantilever and a jaw mechanism, a transverse movement driving mechanism, and a first circumferential traveling mechanism arranged on the cantilever. The cantilever is arranged radially along the pile foundation, and it is connected to the lifting rope of the lifting device. The jaw mechanism is slidably connected to the cantilever radially, and it clamps and holds a feeding pipe. The transverse movement driving mechanism drives the jaw mechanism to move radially along the cantilever, and the first circumferential traveling mechanism cooperates with the annular track device to realize the circumferential movement of the fixture device.

[0011] Further, the annular track device is connected by a plurality of track device units.

[0012] Further, one of the annular track device and the cantilever is provided with a first sliding fitting, and the other is provided with a first annular sliding fitting portion, and the first sliding fitting is in sliding fit with the first annular sliding fitting portion.

[0013] Further, the annular track device has a first annular track, and the first circumferential traveling mechanism includes a first traveling wheel and a first traveling drive motor. The first traveling wheel is engaged with the first annular track, and the first traveling drive motor drives the first traveling wheel to rotate.

[0014] Further, the transverse movement drive mechanism includes a transverse movement platform, a lead screw, and a transverse movement motor. The lead screw is arranged radially, the transverse movement platform is screwed onto the lead screw, the transverse movement motor drives the lead screw to rotate, and the jaw mechanism is arranged on the transverse movement platform.

[0015] Further, a floating body is arranged at one end of the cantilever facing away from the pile foundation.

[0016] Further, the floating body has a ballast water tank, a water pump is arranged on the floating body, and the water pump changes the buoyancy of the floating body by sucking and discharging water in the ballast water tank.

[0017] Further, one of the lifting device and the upper end of the pile foundation is provided with a second sliding fitting, and the other is provided with a second annular sliding fitting portion, and the second sliding fitting is in sliding fit with the second annular sliding fitting portion.

[0018] Further, a second circumferential traveling mechanism is arranged on the lifting device, a second annular track is arranged at the upper end of the pile foundation, the second circumferential traveling mechanism includes a second traveling wheel and a second traveling drive motor, the second traveling wheel is engaged with the second annular track, and the second traveling drive motor drives the second traveling wheel to rotate.

[0019] Further, lifting devices are respectively arranged on both sides of the upper end of the pile foundation. The suspension rope of one side lifting device is connected to the cantilever, and the suspension rope of the other side lifting device is connected to the annular track device.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] 1) The present utility model uses the jaw mechanism to clamp the feeding pipe, drives the jaw mechanism to move radially through the transverse movement drive mechanism, drives the whole fixture device to move circumferentially through the first circumferential traveling mechanism, and at the same time the lifting device also realizes the function of moving circumferentially through the second circumferential traveling mechanism. In addition, the lifting device drives the fixture device and the annular track device to lift, and finally realizes the movement of the jaw mechanism in three dimensions of circumferential, radial and vertical directions, so that the feeding pipe can fill the scouring pits around the pile foundation during feeding, realizing anti-scouring protection;

[0022] 2) The present utility model makes full use of the pile foundation piles to act as fixing devices, which greatly saves space compared with traditional anti-erosion methods.

[0023] 3) The precise scour pit filling system of the monopile foundation for offshore wind power of the present utility model has strong anti-impact ability. Installed on the monopile foundation, there is no need to worry about the influence caused by too fast undercurrent speed. It has high stability and safety and a long service life.

[0024] 4) The application of the floating body in the present utility model greatly reduces the maximum stress borne by the entire precise scour pit filling system of the monopile foundation for offshore wind power, improving the safety and service life of the precise scour pit filling system of the monopile foundation for offshore wind power. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is one of the schematic structural diagrams of the working state of the present utility model.

[0026] Figure 2 It is the second schematic structural diagram of the working state of the present utility model.

[0027] Figure 3 It is the third schematic structural diagram of the working state of the present utility model.

[0028] Figure 4 It is the schematic cross-sectional structure diagram of the annular track device in the present utility model.

[0029] Figure 5 It is the schematic connection structure diagram of the floating body and the water pump in the present utility model.

[0030] In the figure: annular track device 1, first annular sliding fit part 100, first annular track 101, lifting device 2, lifting rope 200, second sliding fit part 201, second circumferential traveling mechanism 202, second traveling wheel 2020, second traveling driving motor 2021, fixture device 3, cantilever 300, first sliding fit part 3000, jaw mechanism 301, transverse movement driving mechanism 302, transverse movement platform 3020, lead screw 3021, transverse movement motor 3022, first circumferential traveling mechanism 303, first traveling wheel 3030, first traveling driving motor 3031, pile foundation 4, second annular sliding fit part 400, second annular track 401, floating body 5, water pump 6. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0032] Please refer to Figures 1 - 5 , a precise scouring pit filling system for an offshore wind power monopile foundation, which includes an annular track device 1, a lifting device 2, and a fixture device 3. The annular track device 1 is sleeved on the pile foundation 4. The lifting device 2 is arranged on the pile foundation 4, and it can move circumferentially along the pile foundation 4 and has a lifting rope 200. The fixture device 3 is located at the lower end of the lifting device 2, and it includes a cantilever 300 and a jaw mechanism 301, a transverse movement driving mechanism 302, and a first circumferential walking mechanism 303 arranged on the cantilever 300. The cantilever 300 adopts a tripod support structure, and the cantilever 300 is arranged radially along the pile foundation 4 and is connected to the lifting rope 200 of the lifting device 2. The jaw mechanism 301 is slidably connected to the cantilever 300 radially and clamps the feeding pipe. Through the feeding pipe, the anti-scouring filling material on the shore is moved along the pipeline to the scouring pit. The jaw mechanism 301 adopts an automatic jaw, which is a well-known technology in the field of jaws and will not be elaborated here. The transverse movement driving mechanism 302 drives the jaw mechanism 301 to move radially along the cantilever 300, and the first circumferential walking mechanism 303 cooperates with the annular track device 1 to realize the circumferential movement of the fixture device 3.

[0033] Continue to refer to Figure 1 , Figure 4 , in an embodiment of the present utility model, the annular track device 1 is connected by a plurality of track device units.

[0034] Preferably, the annular track device 1 includes two track device units. One end of the two track device units is rotatably connected, and the other end is connected by a fastener. There is a gap between the annular track device 1 and the pile foundation 4, so that the annular track device 1 can move up and down along the pile foundation 4, and the annular track device 1 is suspended by the lifting device 2.

[0035] In another embodiment of the present utility model, a plurality of pulleys are circumferentially arranged on the inner wall of the annular track device 1 and are in contact with the pile foundation 1 through the pulleys, so as to improve the smoothness of the lifting of the annular track device 1.

[0036] Continue to refer to Figures 1 - 4, in an embodiment of the present utility model, two first sliding fit members 3000 are arranged up and down at one end of the cantilever 300 close to the pile foundation 4. The first sliding fit member 3000 is of a T-shaped slider structure. Two first annular sliding fit portions 100 are arranged up and down on the annular track device 1. The first annular sliding fit portion 100 is of an annular T-shaped chute structure. The first sliding fit member 3000 is in sliding fit with the first annular sliding fit portion 100, so that the cantilever 300 is hung on the annular track device 1.

[0037] Continue to refer to Figures 1 - 4 , the annular track device 1 has a first annular track 101. The first circumferential traveling mechanism 303 includes a first traveling wheel 3030 and a first traveling drive motor 3031. The first traveling wheel 3030 is in cooperation with the first annular track 101, and the first traveling drive motor 3031 drives the first traveling wheel 3030 to rotate.

[0038] Specifically, there are four sets of the first circumferential traveling mechanisms 303 up and down, and four sets corresponding to them are also arranged on the first annular track 101. The first traveling wheel 3030 is a bevel gear, the first annular track 101 is an annular inclined rack meshing with the first traveling wheel 3030, and the annular tooth surface of the annular inclined rack is a conical tooth surface. The first traveling drive motor 3031 is built in the cantilever 300.

[0039] When the first circumferential traveling mechanism 303 works, the first traveling drive motor 3031 drives the first traveling wheel 3030 to rotate, and the first traveling wheel 3030 travels along the first annular track 101, so as to drive the fixture device 3 as a whole to move circumferentially along the pile foundation 4.

[0040] Continue to refer to Figures 1 - 3 , in an embodiment of the present utility model, the transverse movement drive mechanism 302 includes a transverse movement platform 3020, a lead screw 3021 and a transverse movement motor 3022. The lead screw 3021 is arranged radially. The transverse movement platform 3020 is screwed on the lead screw 3021. The transverse movement motor 3022 drives the lead screw 3021 to rotate. The jaw mechanism 301 is arranged on the transverse movement platform 3020. Wherein, the transverse movement platform 3020 is in sliding fit with the cantilever 300, so that the transverse movement platform 3020 cannot rotate together with the lead screw 3021.

[0041] When the transverse movement drive mechanism 302 works, the transverse movement motor 3022 drives the lead screw 3021 to rotate, and the lead screw 3021 drives the transverse movement platform 3020 to drive the jaw mechanism 301 to move transversely in the radial direction.

[0042] Continue to refer to Figures 1 - 3 , in an embodiment of the present utility model, a floating body 5 is arranged at one end of the cantilever 300 facing away from the pile foundation 4, and an underwater camera 7 is further arranged at the lower end of the floating body 5. The underwater camera 7 is used for photographing the underwater filling situation.

[0043] Continue to refer to Figure 5 , in an embodiment of the present utility model, the floating body 5 has a ballast water tank, a water pump 6 is arranged on the floating body 5, and the water pump 6 changes the buoyancy of the floating body 5 by sucking and discharging the water in the ballast water tank.

[0044] Among them, the present utility model can be provided with two groups of water pumps 6, one group is responsible for pumping water and the other group is responsible for draining water. Or, the present utility model can also adopt a water pump 6 that integrates the functions of pumping water and draining water. This is a well-known technology in the pump field and will not be elaborated here.

[0045] Continue to refer to Figures 1 - 3 , in an embodiment of the present utility model, a second sliding fitting member 201 is arranged on the lifting device 2. The second sliding fitting member 201 is preferably a T-shaped slider. A second annular sliding fitting portion 400 is arranged at the upper end of the pile foundation 4. The second annular sliding fitting portion 400 is preferably an annular T-shaped sliding groove. The second sliding fitting member 201 is slidably fitted with the second annular sliding fitting portion 400. Thereby, the lifting device 2 is hung on the pile foundation 4.

[0046] Continue to refer to Figures 1 - 3 , in an embodiment of the present utility model, a second circumferential traveling mechanism 202 is arranged on the lifting device 2. A second annular track 401 is arranged at the upper end of the pile foundation 4. The second circumferential traveling mechanism 202 includes a second traveling wheel 2020 and a second traveling driving motor 2021. The second traveling wheel 2020 is matched with the second annular track 401, and the second traveling driving motor 2021 drives the second traveling wheel 2020 to rotate.

[0047] Specifically, the second traveling wheel 2020 is a gear, and the second annular track 401 is an annular rack meshing with the second traveling wheel 2020. The second traveling driving motor 2021 is built in the lifting device 2. The lifting device 2 of the present utility model is preferably a hoist.

[0048] When the second circumferential traveling mechanism 202 works, the second traveling driving motor 2021 drives the second traveling wheel 2020 to rotate, and the second traveling wheel 2020 travels along the second annular track 401, thereby driving the whole lifting device 2 to move circumferentially along the pile foundation 4.

[0049] In another embodiment of the present utility model, in order to improve the balance of the annular track device 1, the following settings are made: Lifting devices 2 are installed on both sides of the upper end of the pile foundation 4 in the same manner. The suspension ropes 200 of one side of the lifting device 2 are connected to the cantilever 300, and the suspension ropes 200 of the other side of the lifting device 2 are slidably connected to the first annular sliding mating part 100 on the annular track device 1 through T-shaped sliders. When the height needs to be adjusted, the lifting devices 2 on both sides synchronously lift the fixture device 3 and the annular track device 1. When the circumferential position needs to be adjusted, the lifting devices 2 on both sides simultaneously move synchronously along the clockwise or counterclockwise direction on the pile foundation 4.

[0050] When the present utility model is in use, the gripper mechanism 301 is used to clamp the conveying pipe. The gripper mechanism 301 is driven by the transverse movement driving mechanism 302 to achieve radial movement. The fixture device 3 as a whole is driven by the first circumferential traveling mechanism 303 to move circumferentially. At the same time, the lifting device 2 also realizes the function of moving circumferentially through the second circumferential traveling mechanism 202. In addition, the lifting device 2 drives the fixture device 3 and the annular track device 1 to lift, and finally realizes the movement of the gripper mechanism 301 in three dimensions of circumferential, radial and vertical directions, so that the conveying pipe can fill the scouring pits around the pile foundation 4 during material conveying.

[0051] The floating body 5 plays a balancing role in the movement process of the entire device. Considering that the cantilever 300 has a long extension and will generate certain stress loads even in water, a floating body 5 is installed at the end of the cantilever 300. When the device is in a dormant state, a certain amount of air is filled in the floating body 5 so that the entire device, especially the place where the stress is the greatest at the end, receives an upward buoyancy. In addition, a control device is provided in the floating body 5. When the present utility model is in motion, the ballast water tank in the floating body 5 will discharge or increase a certain amount of water to change the buoyancy size, so as to maintain the balance of the fixture device 3. A subsea camera 7 is equipped at the bottom of the floating body 5, which can observe the shape of the scouring pit on the seabed, so as to realize real-time observation and precise positioning.

[0052] It should be noted that all components of the present utility model adopt well-known waterproof measures for waterproofing.

[0053] The construction process of the present utility model is as follows:

[0054] Step 1, pre-assemble the fixture device 3.

[0055] Step 2, install the lifting device 2 at the upper end of the pile foundation 4.

[0056] Step 3, hoist the annular track device 1 and the fixture device 3 into the water, install the annular track device 1 on the pile foundation 4, and connect the fixture device 3 to the annular track device 1 and the suspension rope 200 respectively.

[0057] Step 4: Clamp the material conveying pipe by the jaw mechanism 301, move the jaw mechanism 301 to the designated position, and the onshore operator guides the filling material along the material conveying pipe. The filling material can be sand and gravel. The filling material flows out along the material conveying pipe to fill the scouring pit. During the whole working process, the underwater camera 7 observes the picture of the scouring pit in real time, and the floating body 5 maintains the balance of the whole device by changing the center of gravity.

[0058] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An accurate scour hole filling system for a monopile foundation of an offshore wind farm, characterized in that Comprising: A ring track device (1) sleeved on a pile foundation (4); A lifting device (2) arranged on the pile foundation (4), capable of moving circumferentially along the pile foundation (4), and having a lifting rope (200); and A fixture device (3) located at the lower end of the lifting device (2), including a cantilever (300) and a jaw mechanism (301), a transverse movement driving mechanism (302), and a first circumferential traveling mechanism (303) arranged on the cantilever (300). The cantilever (300) is arranged radially along the pile foundation (4) and is connected to the lifting rope (200) of the lifting device (2). The jaw mechanism (301) is slidably connected to the cantilever (300) radially and clamps a material conveying pipe. The transverse movement driving mechanism (302) drives the jaw mechanism (301) to move radially along the cantilever (300), and the first circumferential traveling mechanism (303) cooperates with the ring track device (1) to realize the circumferential movement of the fixture device (3).

2. The precise scour pit filling system for an offshore wind power monopile foundation according to claim 1, wherein The ring track device (1) is formed by connecting a plurality of track device units.

3. The precise scour hole filling system for an offshore wind power monopile foundation according to claim 1, characterized in that, One of the ring track device (1) and the cantilever (300) is provided with a first sliding fitting member (3000), and the other is provided with a first annular sliding fitting portion (100), and the first sliding fitting member (3000) is slidably fitted with the first annular sliding fitting portion (100).

4. The precise scour pit filling system for an offshore wind power monopile foundation according to claim 1, characterized in that, The ring track device (1) has a first annular track (101). The first circumferential traveling mechanism (303) includes a first traveling wheel (3030) and a first traveling driving motor (3031). The first traveling wheel (3030) cooperates with the first annular track (101), and the first traveling driving motor (3031) drives the first traveling wheel (3030) to rotate.

5. The precise scour pit filling system for an offshore wind power monopile foundation according to claim 1, characterized in that, The transverse movement driving mechanism (302) includes a transverse movement platform (3020), a lead screw (3021), and a transverse movement motor (3022). The lead screw (3021) is arranged radially. The transverse movement platform (3020) is screwed on the lead screw (3021), and the transverse movement motor (3022) drives the lead screw (3021) to rotate. The jaw mechanism (301) is arranged on the transverse movement platform (3020).

6. The precise scour hole filling system for an offshore wind power monopile foundation according to claim 1, characterized in that, A floating body (5) is arranged at one end of the cantilever (300) facing away from the pile foundation (4).

7. The precise scour hole filling system for an offshore wind power monopile foundation according to claim 6, characterized in that, The floating body (5) has a ballast water tank, and a water pump (6) is arranged on the floating body (5). The water pump (6) changes the buoyancy of the floating body (5) by sucking and discharging water in the ballast water tank.

8. The precise scour pit filling system for an offshore wind power monopile foundation according to claim 1, characterized in that, One of the upper ends of the lifting device (2) and the pile foundation (4) is provided with a second sliding fitting member (201), and the other is provided with a second annular sliding fitting portion (400), and the second sliding fitting member (201) is slidably fitted with the second annular sliding fitting portion (400).

9. The precise scour pit filling system for an offshore wind power monopile foundation according to claim 8, characterized in that, A second circumferential traveling mechanism (202) is provided on the lifting device (2), a second annular track (401) is provided at the upper end of the pile foundation (4), the second circumferential traveling mechanism (202) includes a second traveling wheel (2020) and a second traveling drive motor (2021), the second traveling wheel (2020) is engaged with the second annular track (401), and the second traveling drive motor (2021) drives the second traveling wheel (2020) to rotate.

10. The precise scour pit filling system for an offshore wind power monopile foundation according to claim 9, wherein, Lifting devices (2) are respectively provided on both sides of the upper end of the pile foundation (4), the lifting rope (200) of one side lifting device (2) is connected to the cantilever (300), and the lifting rope (200) of the other side lifting device (2) is connected to the annular track device (1).

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