Offshore wind power foundation wave disturbance device

Abstract

The invention discloses an offshore wind power foundation wave disturbance device, and belongs to the technical field of fan foundation auxiliary structures. The device comprises a fan foundation; an annular floating body is arranged on the periphery of the fan foundation, the floating body is connected with the fan foundation through a flexible connecting piece, and the floating body and the fan foundation are coaxial. The outer ring position of the floating body is further connected with a wave disturbance device through a floating body reinforcing ring, the wave disturbance device is connected with a wave detection device through a second rigid connecting piece, the wave detection device is located at the outer ring position of the wave disturbance device, and a wave disturbance device motor is arranged in the floating body; and multiple sections of wave disturbers are uniformly distributed along the circumference. According to the method, the wave length and wave height of wave propagation destroyed by vibration and the propagation period and frequency of small waves can be flexibly applied, a complete wave is changed into a broken wave through vibration, the steel consumption of the wind turbine foundation structure is saved to the maximum extent, resources are saved, the utilization rate is increased, and good economical efficiency and practicability are achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of wind turbine foundation auxiliary structures, and in particular relates to a wave disturbance device for an offshore wind power foundation. Background Art

[0002] With the rapid development of social economy, the demand for energy in countries around the world has increased dramatically. In order to solve the depletion of non-renewable energy resources and the deteriorating environment, it has become a consensus among countries around the world to find renewable and clean new energy. As the main body of the earth's area accounting for 70%, the ocean not only has rich resources such as aquatic products and oil, but also contains huge energy. Offshore wind power, a marine energy, has developed rapidly and on a large scale.

[0003] Generally speaking, offshore wind power structures need to ensure the stability of the wind power foundation. The existing technology generally adopts the method of adjusting the posture to achieve the stability of the wind power foundation. This method easily leads to a low fatigue service life of the wind power foundation, low structural safety during long-term use, and requires more frequent maintenance, replacement of parts and other operations. Summary of the invention

[0004] The purpose of the present invention is to address the problem that the existing way of achieving wind power foundation stability easily leads to wind power foundation fatigue. The present invention proposes an offshore wind power foundation wave disturbance device.

[0005] To solve the above technical problems, the present invention provides an offshore wind power foundation wave disturbance device, including a wind turbine foundation, a foundation reinforcement ring is circumferentially arranged on the surface of the wind turbine foundation, the foundation reinforcement ring is connected to a floating body through a flexible connector, and the floating body and the wind turbine foundation are coaxial; a wave disruptor is also connected to the outer circle of the floating body through the floating body reinforcement ring, the wave disruptor is connected to a wave detection device through a second rigid connector, the wave detection device is located at the outer circle of the wave disruptor, and a wave disruptor motor is arranged inside the floating body; the wave disruptor is evenly distributed in multiple sections along the circumference.

[0006] Preferably, the floating body is composed of multiple connected sections, and bolts are installed at the connecting positions between adjacent floating bodies; and a shock-absorbing spring is arranged between the bolts and the floating body.

[0007] Preferably, the curvature and distribution of the wave detection device are consistent with those of the wave disturber.

[0008] Preferably, in vertical projection, the flexible connector, the floating body reinforcement ring and the second rigid connector are straight lines radiating toward the circumference.

[0009] Preferably, a plurality of wave disruptor motors are arranged in each buoyancy section, and the wave disruptor motors have a plurality of working modes, and the vibration intensity increases step by step, and the vibration of the wave disruptor motor drives the vibration of the wave disruptor.

[0010] Preferably, the wave detection device includes two side fixing frames of the wave detection device. Both ends of the side fixing frames of the wave detection device are sleeved with a fixed-end connecting rod and a rotating bearing connecting rod. A rotating bearing is sleeved on the surface of the rotating bearing connecting rod. On the side of the rotating bearing facing the fixed-end connecting rod, a zero-level control area, a first-level control area, a second-level control area, a third-level control area, and a fourth-level control area are arranged in sequence. A groove is formed on the side of the fixed-end connecting rod facing the rotating bearing connecting rod. An induction ball connecting spring is arranged in the groove, and an induction ball is arranged on the top of the induction ball connecting spring.

[0011] Preferably, the other side of the rotating bearing is connected with a wave detection connecting rod, and a wave detection floating ball is arranged at one end of the wave detection connecting rod.

[0012] Preferably, the induction ball is connected to one of the zero-level control area, the first-level control area, the second-level control area, the third-level control area, and the fourth-level control area.

[0013] Preferably, the surface of the wave detection device is provided with a stainless steel waterproof shell and a soft rubber waterproof shell.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this solution, the wave disturbance device is used to destroy the wavelength and wave height of wave propagation to reduce the damage of waves to the offshore wind power foundation, reduce the impact of waves on the fan foundation, reduce the influence on the fatigue service life of the fan foundation, and improve the structural safety. This method is simple in construction installation and use method, and has a high utilization effect. And it can be used in any sea area and any form of fan foundation, whether it is a single-pile foundation, a jacket foundation, or a floating foundation. The construction and installation are completed on land and transported to the sea together with the structure.

[0015] 2. In this solution, by flexibly applying vibration to destroy the wavelength and wave height of wave propagation and reduce the propagation period and frequency of small waves, a complete wave is changed into a broken wave through vibration, saving the steel consumption of the fan foundation structure to the greatest extent, saving resources, increasing utilization rate, and having good economy and practicability.

[0016] 3. In this solution, the single-pile foundation can be optimized without wave load action, saving the steel consumption of the fan foundation structure, saving resources, increasing utilization rate, and having good economy and practicability; and it is applicable to any form of fan foundation, with no requirements for water depth, water area, and structural shape, and has very wide practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a top view schematic diagram of the overall structure of the present invention; Figure 3 Front view of the overall structure of the present invention; Figure 4 Schematic diagram of the structure of the wave detection device of the present invention; Figure 5 Detail schematic of the wave detection device of the present invention Figure 1 ; Figure 6 Detail schematic of the wave detection device of the present invention Figure 2 Figure 7 Specific schematic diagram of the shock-absorbing spring of the present invention.

[0018] In the figure: 1 - floating body, 2 - flexible connecting piece, 3 - wave agitator, 4 - wave agitator motor, 5 - wave detection device, 5.1 - wave detection suspension ball, 5.2 - wave detection connecting rod, 5.3 - zero-level control area, 5.4 - first-level control area, 5.5 - second-level control area, 5.6 - third-level control area, 5.7 - fourth-level control area, 5.8 - rotating bearing connecting rod, 5.9 - rotating bearing, 5.10 - fixed-end connecting rod, 5.11 - side fixing frame of the wave detection device, 5.12 - induction ball, 5.13 - induction ball connecting spring, 5.14 - soft rubber waterproof housing, 5.15 - stainless steel waterproof housing, 6 - floating body strengthening ring, 7 - flange, 8 - bolt, 9 - foundation strengthening ring, 10 - fan foundation, 11 - first rigid connecting piece, 12 - wave agitator strengthening ring, 13 - shock-absorbing spring, 14 - second rigid connecting piece. Specific implementation manner

[0019] Embodiment 1: As Figure 1 - Figure 7 shown, a wave agitation device for an offshore wind power foundation includes: a fan foundation 10, a foundation strengthening ring 9 is circumferentially arranged on the surface of the fan foundation 10, the foundation strengthening ring 9 is connected to the floating body 1 through a flexible connecting piece 2 and the floating body 1 and the fan foundation 10 are coaxial; a wave agitator 3 is further connected to the outer ring position of the floating body 1 through a floating body strengthening ring 6, the wave agitator 3 is connected to the wave detection device 5 through a second rigid connecting piece 14, the wave detection device 5 is located at the outer ring position of the wave agitator 3, the radian and distribution of the wave detection device 5 are consistent with those of the wave agitator 3, and a wave agitator motor 4 is arranged inside the floating body 1; the wave agitator 3 is evenly distributed in multiple segments along the circumference. The floating body 1 is composed of multiple segments connected, and a bolt 8 is installed at the connection position between adjacent floating bodies 1; a shock-absorbing spring 13 is arranged between the bolt 8 and the floating body 1. The floating body 1 ensures that the position of the overall device is always at the sea level regardless of the wave height.

[0020] Specifically, in the vertical projection, the flexible connecting piece 2, the floating body strengthening ring 6, and the second rigid connecting piece 14 are straight lines radiating towards the circumference.

[0021] A number of wave disturbance motor 4 are arranged inside each floating body 1. The wave disturbance motor 4 has several levels of working modes, and the vibration intensity increases gradually. The vibration of the wave disturbance motor 4 drives the vibration of the wave disturbance device 3.

[0022] The wave detection device 5 includes two side fixing frames 5.11 of the wave detection device. Both ends of the side fixing frame 5.11 of the wave detection device are sleeved with a fixed end connecting rod 5.10 and a rotating bearing connecting rod 5.8. The surface of the rotating bearing connecting rod 5.8 is sleeved with a rotating bearing 5.9. On the side of the rotating bearing 5.9 facing the fixed end connecting rod 5.10, a zero-level control area 5.3, a first-level control area 5.4, a second-level control area 5.5, a third-level control area 5.6, and a fourth-level control area 5.7 are arranged in sequence. A groove is provided on the side of the fixed end connecting rod 5.10 facing the rotating bearing connecting rod 5.8. An induction ball connecting spring 5.13 is arranged in the groove, and an induction ball 5.12 is arranged at the top of the induction ball connecting spring 5.13. On the other side of the rotating bearing 5.9, there is a wave detection connecting rod 5.2, and one end of the wave detection connecting rod 5.2 is provided with a wave detection floating ball 5.1.

[0023] The induction ball 5.12 is connected to one of the zero-level control area 5.3, the first-level control area 5.4, the second-level control area 5.5, the third-level control area 5.6, and the fourth-level control area 5.7. The surface of the wave detection device 5 is provided with a stainless steel waterproof shell 5.15 and a soft rubber waterproof shell 5.14.

[0024] The induction ball 5.12 of the wave detection device 5, devices such as the zero-level control area 5.3, the first-level control area 5.4, the second-level control area 5.5, the third-level control area 5.6, the induction ball connecting spring 5.13, and the induction ball 5.12 ensure that the wave detection device 5 can be adjusted in angle so that it is located in the sea waves during the wave undulation process.

[0025] The wave disturbance device destroys the wavelength and wave height of the wave propagation to reduce the damage of the wave to the offshore wind power foundation, the impact of the lower wave on the fan foundation, reduce the influence on the fatigue service life of the fan foundation, and improve the safety of the structure.

[0026] An offshore wind power foundation wave disturbance device and construction method. A circle of floating bodies 1 is installed around the offshore wind power foundation. The floating body is connected to the wind power foundation through a flexible connecting piece 2. Then, eight wave disturbance devices 3 are arranged along the periphery of the attachment. The eight wave disturbance devices are respectively connected to eight wave disturbance motors 4. The motors are installed in eight directions inside the floating body, and wave detection devices 5 are arranged in eight directions along the periphery of the eight wave disturbance devices. The specific usage content and construction method are as follows: (1) When the wave detection device 5 detects a wave, it immediately feeds back to the wave agitator motor 4. The wave agitator motor 4 is powered on, and the wave agitator 3 starts to vibrate. The vibration of the wave agitator 3 is set to multiple levels, corresponding to different levels of waves. The waves are divided into zero level, first level, second level, third level, fourth level... from low to high. For example, when the wave detection device 5 detects a first-level wave, it immediately feeds back to the wave agitator motor 4 to start the wave agitator to turn on the first-level vibration, and the wave detection device 5 and the wave agitator 3 are set in eight directions, and each wave detection device 5 and wave agitator 3 correspond one by one. When the wave detection device 5 detects a wave in a certain direction, it will correspondingly start the wave agitator 3 in the corresponding direction.

[0027] (2) Construction method of the floating body 1: The floating body 1 is mainly divided into eight sections, and each section is connected by bolts 8 through a flange 7. And each section of the floating body 1 is connected to the floating body strengthening ring 6 and the foundation strengthening ring 9 respectively through two flexible connectors 2. The other side of the foundation strengthening ring 9 is connected to the wind turbine foundation 10. Using flexible connection, the floating body 1 will not move horizontally and can move up and down with the change of the water level in the vertical horizontal plane direction, which can effectively control the height of the floating body 1 on the water surface.

[0028] (3) Construction method of the wave agitator 3: The wave agitator 3 is mainly divided into eight sections, and each section is disconnected from each other, and is connected to the wave agitator strengthening ring 12 and the floating body strengthening ring 6 by a rigid connector 11. Using rigid connection is to keep it in the same position as the floating body 1. The inner side of the wave agitator strengthening ring 12 is connected to the outer surface of the wave agitator 3 through multiple shock-absorbing springs 13. Passing through multiple shock-absorbing springs 13 is to ensure that the vibration of the wave agitator 3 does not affect other structures connected to it.

[0029] (4)Construction method of the wave detection device 5: The wave detection device 5 is integrally installed at the connection of the two floating bodies 1, on the outermost side of the whole structure, which can effectively detect the wave propagation and quickly feedback to the wave agitator motor 4. When the wave propagates, the wave detection suspension ball 5.1 floats upward, causing the wave detection connecting rod 5.2 to start rotating around the rotating bearing connecting rod 5.8. The induction ball 5.12 always keeps in contact with the groove of the hierarchical control board through the induction ball connecting spring 5.13, and divides the hierarchical control board into five control areas, namely, the zero-level control area 5.3, the first-level control area 5.4, the second-level control area 5.5, the third-level control area 5.6, and the fourth-level control area 5.7. When the induction ball 5.12 is in the zero-level control area 5.3, the wave agitator motor 4 is not started. When the wave height increases, the wave detection connecting rod 5.2 rotates upward, and the induction ball 5.12 contacts the first-level control area 5.4, which is fed back to the wave agitator motor 4 and the first-level vibration response of the wave agitator 3 is started. If the induction ball 5.12 contacts other control areas when the wave height increases, the vibration response of the corresponding level of the wave agitator 3 will be started.

[0030] (5)Construction method of the wave agitator motor 4: Eight wave agitator motors 4 are respectively arranged in the cavities of the eight floating bodies 1. Each wave agitator motor 4 corresponds to a wave agitator 3 and a wave detection device 5 one by one. The power supply of the wave agitator motor 4 is transferred from the wind turbine power generation. The power consumption of the wave agitator motor 4 is small and will affect the power generation efficiency of the wind turbine.

[0031] The wave propagation wavelength and wave height are destroyed by the wave disturbance device to reduce the damage of the wave to the offshore wind power foundation, reduce the impact of the lower wave on the fan foundation, reduce the influence on the fatigue service life of the fan foundation, and improve the structural safety. This method has a simple construction installation and use method, and a high utilization effect. And it can be used for any sea area, fan foundation form, whether it is a monopile foundation, a jacket foundation or a floating foundation. The construction and installation are completed on land and transported to the sea together with the structure.

Claims

1. An offshore wind power foundation wave disturbance device, comprising a wind turbine foundation (10), characterized in that: The surface of the fan foundation (10) is circumferentially provided with a foundation strengthening ring (9). The foundation strengthening ring (9) is connected to the floating body (1) through a flexible connecting piece (2), and the floating body (1) and the fan foundation (10) are coaxial. At the outer ring position of the floating body (1), a wave disturbing device (3) is also connected through a floating body strengthening ring (6). The wave disturbing device (3) is connected to a wave detection device (5) through a second rigid connecting piece (14). The wave detection device (5) is located at the outer ring position of the wave disturbing device (3). A wave disturbing motor (4) is arranged inside the floating body (1). The wave disturbing device (3) is evenly distributed in multiple segments along the circumference.

2. The wave disturbance device for an offshore wind power foundation according to claim 1, characterized in that, The floating body (1) is composed of multiple connected segments. Bolts (8) and flanges (7) are installed at the connection positions between adjacent floating bodies (1). A shock-absorbing spring (13) is arranged between the bolt (8) and the floating body (1).

3. The wave disturbance device for an offshore wind power foundation according to claim 1, wherein, The radian and distribution of the wave detection device (5) are consistent with those of the wave disturbing device (3).

4. The wave disturbance device for an offshore wind power foundation according to claim 1, wherein In the vertical projection, the flexible connecting piece (2), the floating body strengthening ring (6), and the second rigid connecting piece (14) are straight lines radiating towards the circumference.

5. The wave disturbance device for an offshore wind power foundation according to claim 2, characterized in that, Several wave disturbing motors (4) are arranged in each segment of the floating body (1). The wave disturbing motors (4) have several working modes, and the vibration intensity increases gradually. The vibration of the wave disturbing motors (4) drives the vibration of the wave disturbing device (3).

6. The wave disturbance device for an offshore wind power foundation according to claim 1, wherein, The wave detection device (5) includes two side fixing frames (5.11) of the wave detection device. Fixed-end connecting rods (5.10) and rotating bearing connecting rods (5.8) are sleeved at both ends of the side fixing frames (5.11) of the wave detection device. A rotating bearing (5.9) is sleeved on the surface of the rotating bearing connecting rod (5.8). On the side of the rotating bearing (5.9) facing the fixed-end connecting rod (5.10), a zero-level control area (5.3), a first-level control area (5.4), a second-level control area (5.5), a third-level control area (5.6), and a fourth-level control area (5.7) are sequentially arranged. A groove is formed on the side of the fixed-end connecting rod (5.10) facing the rotating bearing connecting rod (5.8). An induction ball connecting spring (5.13) is arranged in the groove. An induction ball (5.12) is arranged at the top of the induction ball connecting spring (5.13).

7. The wave disturbance device for an offshore wind power foundation according to claim 6, characterized in that, On the other side of the rotating bearing (5.9), a wave detection connecting rod (5.2) is connected. A wave detection suspension ball (5.1) is arranged at one end of the wave detection connecting rod (5.2).

8. A wave disturbance device for an offshore wind power foundation according to claim 6, characterized in that, The induction ball (5.12) is in contact with one of the zero-level control area (5.3), the first-level control area (5.4), the second-level control area (5.5), the third-level control area (5.6), and the fourth-level control area (5.7).

9. The wave disturbance device for an offshore wind power foundation according to claim 1, characterized in that, The surface of the wave detection device (5) is provided with a stainless steel waterproof shell (5.15) and a soft rubber waterproof shell (5.14).

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