Offshore wind turbine foundation reinforcement device and method

Abstract

The application relates to the technical field of offshore wind power, in particular to an offshore wind turbine foundation reinforcing device and method. The offshore wind turbine foundation reinforcing device comprises a suction cylinder, a grouting pipe and a disturbance assembly. The grouting pipe is connected with the suction cylinder, a through hole is arranged on the grouting pipe, and the grouting pipe is used for conveying slurry. The disturbance assembly comprises a stirring blade, the stirring blade is arranged on the suction cylinder, and the stirring blade rotates to disturb the soil body around the suction cylinder. The offshore wind turbine foundation reinforcing device can improve the foundation bearing capacity.

Description

TECHNICAL FIELD

[0001] The present application relates to the offshore wind power technology field, and particularly relates to a kind of offshore wind turbine foundation reinforcing device and method. BACKGROUND

[0002] When offshore wind turbine foundation is installed, in order to reduce installation resistance, a drag reduction ring is usually arranged on the suction cylinder, the soil around the inner and outer walls of the suction cylinder is disturbed through the drag reduction ring, so as to reduce the installation resistance of the suction cylinder, but due to the disturbance of the drag reduction ring to the soil, the undrained shear strength of the soil around the suction cylinder is also reduced while the installation resistance of the suction cylinder is reduced, so that after the installation of the wind turbine foundation is completed, the foundation bearing capacity is reduced, and the disturbed soil needs a long time to recover strength, in order to improve the bearing capacity of the foundation,

[0003] In related technologies, the wind turbine foundation is usually reinforced by grouting, but the flow of grout can easily cause uneven distribution of grout, resulting in that the bearing capacity of the reinforced foundation cannot meet the preset requirements. SUMMARY

[0004] The present application aims to at least solve one of the technical problems in the related art. To this end, the embodiments of the present application propose a kind of offshore wind turbine foundation reinforcing device, which can make the grout uniformly distributed in the disturbed soil layer and improve the bearing capacity of the reinforced foundation.

[0005] The embodiments of the present application also propose a kind of offshore wind turbine foundation reinforcing method.

[0006] The offshore wind turbine foundation reinforcing device of the embodiments of the present application comprises: a suction cylinder, a grouting pipe connected with the suction cylinder, a through hole is formed in the grouting pipe, and the grouting pipe is used for conveying grout; a disturbance assembly, the disturbance assembly comprises a stirring blade, the stirring blade is arranged on the suction cylinder, and the stirring blade rotates to disturb the soil around the suction cylinder.

[0007] The offshore wind turbine foundation reinforcing device of the embodiments of the present application can make the grout uniformly distributed in the disturbed soil layer and improve the bearing capacity of the reinforced foundation.

[0008] In some embodiments, the stirring blade comprises a first blade, a second blade and a third blade, and a rotating shaft, the second blade, the disturbance assembly further comprises a rotating shaft, and the first blade and the third blade are respectively arranged on the two sides of the second blade and connected with the rotating shaft.

[0009] In some embodiments, the disturbance assembly further comprises an extension component, the extension component is connected with the first blade and the third blade respectively, and the extension component is used to adjust the included angle between the first blade and the third blade and the included angle between the first blade and the second blade.

[0010] In some embodiments, the telescopic component comprises a first telescopic rod and a second telescopic rod, one end of the first telescopic rod is connected with the first blade, the other end of the first telescopic rod is connected with the rotating shaft, one end of the second telescopic rod is connected with the third blade, the other end of the second telescopic rod is connected with the rotating shaft.

[0011] In some embodiments, the stirring blade comprises a first stirring blade and a second stirring blade, the first stirring blade is arranged on the outer wall surface of the suction cylinder, and the second stirring blade is arranged on the inner wall surface of the suction cylinder.

[0012] In some embodiments, the number of the first stirring blades is multiple, and the multiple first stirring blades are arranged at intervals in the circumferential direction of the outer wall surface of the suction cylinder, and the number of the second stirring blades is multiple, and the multiple second stirring blades are arranged at intervals in the circumferential direction of the inner wall surface of the suction cylinder.

[0013] In some embodiments, the multiple first stirring blades are divided into multiple groups of first stirring blades, and the multiple groups of first stirring blades are arranged at intervals in the height direction of the suction cylinder, and the multiple second stirring blades are divided into multiple groups of second stirring blades, and the multiple groups of second stirring blades are arranged at intervals in the height direction of the suction cylinder.

[0014] In some embodiments, the disturbance assembly further comprises a driving component connected with the rotating shaft to drive the stirring blade to rotate.

[0015] In some embodiments, the offshore wind turbine foundation reinforcing device further comprises a drag reduction ring arranged on the inner wall surface and the outer wall surface of the suction cylinder, and the number of the drag reduction rings is multiple, and the multiple drag reduction rings are arranged at intervals on the inner wall surface and the outer wall surface of the suction cylinder.

[0016] The offshore wind turbine foundation reinforcing method of the embodiment of the present application comprises: when the wind turbine foundation is sinking, the disturbance assembly rotates to cut the soil around the wind turbine foundation; when the wind turbine foundation sinks to a preset position, the grouting pipe is injected with slurry, and the disturbance assembly rotates to uniformly mix the slurry and the soil.

[0017] The offshore wind turbine foundation reinforcing method of the embodiment of the present application can improve the bearing capacity of the foundation. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic view of the offshore wind turbine foundation reinforcing device of the embodiment of the present application.

[0019] Figure 2 is a top view of the offshore wind turbine foundation device of the embodiment of the present application.

[0020] Figure 3 is a schematic view of the grouting pipe of the embodiment of the present application.

[0021] Figure 4 is a schematic view of the stirring blade of the embodiment of the present application.

[0022] Reference signs: support cylinder 100, connecting rod 110,

[0023] suction cylinder 1, cover plate 11, cavity 12, grouting pipe 2, through hole 21, grouting opening 22,

[0024] disturbance assembly 3, stirring blade 31, first blade 311, second blade 312, third blade 313, rotating shaft 32, telescopic part 33, first telescopic rod 331, second telescopic rod 332, drag reduction ring 4. DETAILED DESCRIPTION

[0025] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0026] As Figures 1-4 shown, the offshore wind turbine foundation reinforcing device of the embodiment of the present application comprises a suction cylinder 1, a grouting pipe 2 and a disturbance assembly 3.

[0027] The grouting pipe 2 is connected with the suction cylinder 1, the grouting pipe 2 is provided with a through hole 21, and the grouting pipe 2 is used for conveying slurry. The disturbance assembly 3 comprises a stirring blade 31, the stirring blade 31 is arranged on the suction cylinder 1, and the stirring blade 31 rotates to disturb the soil around the suction cylinder 1.

[0028] Specifically, the suction cylinder 1 extends in the up-down direction, the support cylinder 100 is arranged above the suction cylinder 1, the support cylinder 100 is arranged concentrically with the suction cylinder 1, the connecting rod 110 is arranged between the suction cylinder 1 and the support cylinder 100, that is, the upper end of the connecting rod 110 is connected with the support cylinder 100, the lower end of the connecting rod 110 is connected with the suction cylinder 1, the number of the connecting rod 110 is set to be multiple, and the multiple connecting rods 110 are arranged in a circumferential direction of the support cylinder 100, so as to improve the connection stability between the support cylinder 100 and the suction cylinder 1.

[0029] Specifically, the number of the grouting pipe 2 is set to be multiple, the multiple grouting pipes 2 are arranged in a circumferential direction of the suction cylinder 1, the grouting pipe 2 extends in the up-down direction, the number of the through hole 21 is set to be multiple, the multiple through holes 21 are arranged in the circumferential direction of the grouting pipe 2, the multiple through holes 21 are divided into multiple groups of through holes 21, the multiple groups of through holes 21 are arranged in the up-down direction of the grouting pipe 2, and the upper end and the lower end of the grouting pipe 2 are arranged in a sealed manner, so that the slurry is transmitted to the inside and the outside of the suction cylinder 1 through the through hole 21.

[0030] Specifically, the stirring blade 31 is arranged on the inner wall surface of the suction cylinder 1, and rotation of the stirring blade 31 disturbs the soil around the inner wall surface of the suction cylinder 1. The stirring blade 31 is arranged on the outer wall surface of the suction cylinder 1, and rotation of the stirring blade 31 disturbs the soil around the outer wall surface of the suction cylinder 1.

[0031] Optionally, the upper end of the suction cylinder 1 is provided with a cover plate 11, the suction cylinder 1 has a cavity 12 inside, the support cylinder 100 is arranged above the cover plate 11, that is, the lower end of the connecting rod 110 is connected to the cover plate 11, the suction cylinder 1 is in the shape of a cylinder, and the support cylinder 100 can also be in the shape of a cylinder. The radial dimension of the support cylinder 100 is smaller than the radial dimension of the suction cylinder 1, and the axial dimension of the support cylinder 100 is greater than the axial dimension of the suction cylinder 1, so that the suction cylinder 1 can provide better support for the support cylinder 100.

[0032] For example, the number of the connecting rods 110 is four.

[0033] Optionally, the upper end of the grouting pipe 2 is provided with a grouting opening 22, and the upper end of the grouting pipe 2 is flush with the seabed surface or protrudes from the seabed surface, so as to be connected to external grouting equipment, so that the slurry is distributed around the suction cylinder 1 through the grouting pipe 2 and the through holes 21. It can be understood that part of the through holes 21 are arranged inside the cavity 12, and part of the through holes 21 are arranged outside the cavity 12, that is, the slurry can enter the inside of the suction cylinder 1 through the through holes 21, and the slurry can also enter the outside of the suction cylinder 1 through the through holes 21. Through the mixing of the slurry inside and outside the suction cylinder 1 with the soil, the bearing capacity of the reinforced foundation is improved, and the in-place stability of the foundation is ensured.

[0034] Optionally, the arrangement of the grouting pipe 2 can also improve the bearing capacity of the foundation. By arranging a plurality of grouting pipes 2, the transmission speed of the slurry can be improved, and the amount of slurry to be transmitted can be adjusted according to different positions of the suction cylinder 1, so as to improve the mixing effect of the slurry and the soil, and further improve the bearing capacity of the reinforced foundation.

[0035] When the suction cylinder 1 is installed, the soil around the inner and outer circumferential surfaces of the suction cylinder 1 will generate resistance to the sinking of the suction cylinder 1 due to the viscosity of the soil layer of the seabed. The rotation of the stirring blade 31 disturbs and destroys the soil around the circumferential surface of the suction cylinder 1, facilitating the sinking installation of the suction cylinder 1. When the suction cylinder 1 sinks to the preset position, the soil around the suction cylinder 1 is disturbed, and the disturbed soil needs a long time to recover to improve the strength of the soil. The embodiment of the present application introduces the slurry into the disturbed soil through the grouting pipe 2, and mixes the slurry with the soil through the stirring of the stirring blade 31, so as to improve the bearing capacity of the reinforced foundation.

[0036] It can be understood that when the suction cylinder 1 is installed, the stirring blade 31 stirs the soil in the seabed, and when the suction cylinder 1 is reinforced, that is, when the suction cylinder 1 sinks to the preset position, the stirring blade 31 stirs the mixture of the slurry and the soil. The slurry is a reinforcing slurry.

[0037] The embodiment of the present application can make the slurry and the soil fully mixed through the setting of the stirring blade 31. Compared with the related art in which the mixing is only performed by the flow of the slurry and the soil, the stirring blade 31 of the embodiment can stir the slurry and the soil within a certain range around the suction cylinder 1, so that the slurry can be uniformly distributed in the disturbed soil layer, the uniformity of the mixing of the slurry and the soil is improved, and the bearing capacity of the reinforced foundation is further improved.

[0038] In some embodiments, the stirring blade 31 includes a first blade 311, a second blade 312, and a third blade 313, and the disturbing assembly 3 further includes a rotating shaft 32, the second blade 312 is connected with the rotating shaft 32, and the first blade 311 and the third blade 313 are respectively arranged on the two sides of the second blade 312 and connected with the rotating shaft 32.

[0039] Specifically, by directly connecting the second blade 312 with the rotating shaft 32, the first blade 311 and the third blade 313 are respectively arranged on the two sides of the second blade 312, so that the first blade 311, the second blade 312, and the third blade 313 are distributed at a certain angle, the first blade 311, the second blade 312, and the third blade 313 can disturb the soil at different positions, the disturbance of the soil near the side of the suction cylinder 1 is avoided, the disturbing range of the stirring blade 31 is expanded, the efficiency of the stirring blade 31 is improved, and the efficiency of the reinforcing device is further improved.

[0040] It can be understood that the stirring blade 31 can also be provided with multiple blades, for example, the first blade 311, the second blade 312, the third blade 313, the fourth blade, and the fifth blade, the second blade 312 is connected with the rotating shaft 32, and the first blade 311, the third blade 313, the fourth blade, and the fifth blade are arranged at intervals in the circumferential direction of the rotating shaft 32, that is, the first blade 311 and the third blade 313 are respectively arranged on the left and right sides of the rotating shaft 32, and the fourth blade and the fifth blade are respectively arranged on the upper and lower sides of the rotating shaft 32, and the embodiment of the present application does not limit the specific number of blades of the stirring blade 31, and the specific implementation is subject to the specific implementation.

[0041] In some embodiments, the disturbing assembly 3 further includes an extension component 33, the extension component 33 is respectively connected with the first blade 311 and the third blade 313, and the extension component 33 is used to adjust the included angle between the first blade 311 and the third blade 313 and the included angle between the first blade 311 and the second blade 312.

[0042] Specifically, one end of the telescopic component 33 is connected with the rotating shaft 32, and the other end of the telescopic component 33 is connected with the first blade 311 and the third blade 313 respectively, and the angle between the first blade 311 and the second blade 312 and the angle between the third blade 313 and the second blade 312 are adjusted so that the stirring blade 31 can disturb the soil at different positions, the disturbance efficiency of the stirring blade 31 is improved, and the installation and reinforcement of the suction cylinder 1 are facilitated.

[0043] In some embodiments, the telescopic component 33 includes a first telescopic rod 331 and a second telescopic rod 332, one end of the first telescopic rod 331 is connected with the first blade 311, the other end of the first telescopic rod 331 is connected with the rotating shaft 32, one end of the second telescopic rod 332 is connected with the third blade 313, and the other end of the second telescopic rod 332 is connected with the rotating shaft 32.

[0044] Optionally, the angle between the first blade 311 and the second blade 312 is adjusted by the telescopic adjustment of the first telescopic rod 331, that is, the first telescopic rod 331 is extended, the angle between the first blade 311 and the second blade 312 is reduced, the first telescopic rod 331 is retracted, the angle between the first blade 311 and the second blade 312 is increased, and the adjustment of the telescopic amount of the first telescopic rod 331 adjusts the angle between the first blade 311 and the second blade 312, and the disturbance range of the first blade 311 is adjusted.

[0045] Optionally, the angle between the third blade 313 and the second blade 312 is adjusted by the telescopic adjustment of the second telescopic rod 332, that is, the second telescopic rod 332 is extended, the angle between the third blade 313 and the second blade 312 is reduced, the second telescopic rod 332 is retracted, the angle between the third blade 313 and the second blade 312 is increased, and the adjustment of the telescopic amount of the second telescopic rod 332 adjusts the angle between the third blade 313 and the second blade 312, and the disturbance range of the third blade 313 is adjusted.

[0046] It can be understood that the external power supply of the first telescopic rod 331 and the second telescopic rod 332 ensures the normal work of the first telescopic rod 331 and the second telescopic rod 332, and the present application does not limit the adjustment mode of the disturbance range of the first blade 311 and the third blade 313, such as a push rod, a spring and an oil cylinder, and the present application does not limit the specific adjustment mode, as long as the adjustment of the disturbance range of the first blade 311 and the third blade 313 can be realized, which belongs to the protection scope of the present application.

[0047] In some embodiments, the stirring blade 31 includes a first stirring blade (not shown in the figure) and a second stirring blade (not shown in the figure), the first stirring blade is arranged on the outer wall surface of the suction cylinder 1, and the second stirring blade is arranged on the inner wall surface of the suction cylinder 1.

[0048] Optionally, the first stirring blade is arranged on the suction cylinder 1 and located outside the suction cylinder 1, and the second stirring blade is located in the chamber 12 of the suction cylinder 1, the first stirring blade is used to disturb the soil layer outside the suction cylinder 1, and the second stirring blade is used to disturb the soil layer inside the suction cylinder 1, which is beneficial to the installation and reinforcement of the suction cylinder 1.

[0049] In some embodiments, the number of first stirring blades is set to be multiple, and the multiple first stirring blades are arranged at intervals in the circumferential direction of the outer wall surface of the suction cylinder 1, and the number of second stirring blades is set to be multiple, and the multiple second stirring blades are arranged at intervals in the circumferential direction of the inner wall surface of the suction cylinder 1.

[0050] Optionally, through the arrangement of multiple first stirring blades, the soil within a certain range at the circumference of the suction cylinder 1 can be disturbed, when the multiple first stirring blades are uniformly distributed, the soil around the suction cylinder 1 can be disturbed to the same extent, otherwise the distribution of the first stirring blades can be adjusted according to actual needs.

[0051] Optionally, through the arrangement of multiple second stirring blades, the soil within a certain range at the circumference of the suction cylinder 1 can be disturbed, so that the soil near the inner wall surface of the suction cylinder 1 can be disturbed, which is beneficial to the installation and reinforcement of the suction cylinder 1. That is, when the suction cylinder 1 is installed, the disturbance of the soil near the inner wall surface of the suction cylinder 1 by the second stirring blade facilitates the sinking of the suction cylinder 1, and when the suction cylinder 1 is fixed, the arrangement of the second stirring blade can make the slurry fully mixed with the disturbed soil near the inner wall surface of the suction cylinder 1, improve the strength of the mixed soil, and further improve the bearing capacity of the suction cylinder 1.

[0052] In the embodiments of the present application, the first stirring blade and the second stirring blade respectively disturb the soil near the inner wall surface and the outer wall surface of the suction cylinder 1, which is beneficial to the installation and reinforcement of the suction cylinder 1, and through the stirring action of the first stirring blade and the second stirring blade, the soil can be more uniformly mixed with the slurry, thereby improving the reinforcement effect.

[0053] In some embodiments, the multiple first stirring blades are divided into multiple groups of first stirring blades, and the multiple groups of first stirring blades are arranged at intervals in the height direction of the suction cylinder 1 (such as the up-down direction shown in the figure). Figure 1 The multiple second stirring blades are divided into multiple groups of second stirring blades, and the multiple groups of second stirring blades are arranged at intervals in the height direction of the suction cylinder 1.

[0054] Optionally, the first stirring blade groups are arranged around the circumference of the suction cylinder 1, and the multiple first stirring blade groups are arranged in layers on the suction cylinder 1, so that the first stirring blade groups can disturb the soil at different heights of the suction cylinder 1, and when the suction cylinder 1 is reinforced, the stirring of the soil and the slurry at different heights by the multiple first stirring blade groups can improve the uniformity of the mixture of the slurry and the soil at different heights outside the suction cylinder 1, thereby improving the bearing capacity of the reinforced foundation.

[0055] Optionally, the second stirring blade groups are arranged around the circumference of the suction cylinder 1, and a plurality of second stirring blade groups are arranged in layers on the suction cylinder 1, so that the second stirring blade groups can disturb the soil at different heights in the chamber 12 of the suction cylinder 1, and when the suction cylinder 1 is reinforced, the stirring of the soil and the slurry at different heights by the plurality of second stirring blade groups can improve the mixing uniformity of the slurry and the soil at different heights in the suction cylinder 1, thereby improving the bearing capacity of the reinforced foundation. The embodiments of the present application improve the strength of the soil inside and outside the suction cylinder 1, thereby improving the bearing capacity of the suction cylinder 1.

[0056] It can be understood that the spacing between the plurality of first stirring blade groups can be adjusted according to actual needs, the spacing between the plurality of second stirring blade groups can be adjusted according to actual needs, and the present application does not limit the spacing between the plurality of first stirring blade groups and the plurality of second stirring blade groups, and is subject to specific implementation.

[0057] In some embodiments, the disturbance assembly 3 further comprises a driving component (not shown in the figure) connected to the rotating shaft 32 to drive the stirring blade 31 to rotate.

[0058] It can be understood that the driving component can be arranged on the suction cylinder 1, or can be arranged outside the suction cylinder 1. When the driving component is arranged outside the suction cylinder 1, the driving force of the driving component is transmitted to the rotating shaft 32 through a transmission component to drive the rotating shaft 32 to rotate, for example, through a worm gear.

[0059] In some embodiments, the offshore wind turbine foundation reinforcement device further comprises a drag reduction ring 4 arranged on the inner wall surface and the outer wall surface of the suction cylinder 1, and the number of the drag reduction ring 4 is multiple, and the plurality of drag reduction rings 4 are arranged at intervals on the inner wall surface and the outer wall surface of the suction cylinder 1.

[0060] Optionally, the soil at the outer wall of the suction cylinder 1 is disturbed by the drag reduction ring 4 arranged on the outer wall of the suction cylinder 1, and the soil at the inner wall of the suction cylinder 1 is disturbed by the drag reduction ring 4 arranged on the inner wall of the suction cylinder 1, and the soil around the inner and outer walls of the suction cylinder 1 is disturbed, which facilitates the installation of the suction cylinder 1.

[0061] Optionally, the plurality of drag reduction rings 4 are arranged at intervals on the inner and outer wall surfaces of the suction cylinder 1, which expands the disturbance range of the soil on the seabed by the drag reduction ring 4 during the installation of the suction cylinder 1, thereby improving the installation efficiency of the suction cylinder 1.

[0062] Optionally, during the installation of the suction cylinder 1, the soil at the inner and outer walls of the suction cylinder 1 is disturbed by the drag reduction ring 4, the cutting action of the disturbance assembly 3 on the inner and outer walls of the suction cylinder 1, and the double action of the drag reduction ring 4 and the disturbance assembly 3 on the soil, which improves the installation efficiency of the suction cylinder 1.

[0063] Optionally, through the arrangement of the drag reduction ring 4, the wiring of the disturbance assembly 3 is facilitated, and the wires can be arranged in the drag reduction ring 4.

[0064] The offshore wind turbine foundation reinforcement method of the embodiment of the present application comprises: when the wind turbine foundation is sinking, the disturbance assembly 3 rotates to cut the soil around the wind turbine foundation.

[0065] When the wind turbine foundation sinks to a preset position, the grout is injected into the grouting pipe 2, and the disturbance assembly 3 rotates to uniformly mix the grout and the soil.

[0066] Optionally, when the suction cylinder 1 is installed, the drag reduction ring 4 has a certain disturbance effect on the soil, and the rotation of the disturbance assembly 3 disturbs the soil layer inside and outside the suction cylinder 1, thereby improving the installation speed of the suction cylinder 1.

[0067] When the suction cylinder 1 enters the seawater, the extension amount of the telescopic assembly can be adjusted to make the included angle between the first blade 311 and the third blade 313 and the second blade 312 a minimum value, so as to avoid that the included angle between the first blade 311 and the third blade 313 and the second blade 312 is too large when the suction cylinder 1 sinks, thereby increasing the sinking resistance of the suction cylinder 1. When the lower end of the suction cylinder 1 contacts the seabed soil, the extension amount of the first telescopic rod 331 and the second telescopic rod 332 is adjusted to adjust the included angle between the first blade 311 and the second blade 312 and the second blade 312 and the third blade 313, so that the stirring blade 31 disturbs the soil, thereby improving the installation efficiency of the suction cylinder 1.

[0068] For example, when the stirring blade 31 is initially operated, the extension amount of the first telescopic rod 331 and the second telescopic rod 332 can be adjusted to make the included angle between the first blade 311 and the second blade 312 and the second blade 312 and the third blade 313 all 90 degrees, and in the operation process, the included angle between the first blade 311 and the second blade 312 and the second blade 312 and the third blade 313 is adjusted to be greater than 90 degrees and less than 135 degrees, so as to improve the disturbance range of the stirring blade 31.

[0069] For example, when the stirring blade 31 is initially operated, the rotating speed of the stirring blade 31 can be adjusted to 1 r / min to 5 r / min. With the continuous sinking of the suction cylinder 1, the hardness of the soil layer will continuously increase, and the rotating speed of the stirring blade 31 is reduced at a certain speed until the lowest rotating speed is adjusted, for example, the lowest rotating speed of the stirring blade 31 is 1 r / min. By reducing the rotating speed of the stirring blade 31, the shear torque of the stirring blade 31 is improved, so that the stirring blade 31 can more effectively disturb the soil.

[0070] It can be understood that when the rotating speed and the starting number of the stirring blade 31 are adjusted, the stirring blade 31 arranged in the suction cylinder 1 and the stirring blade 31 arranged outside the suction cylinder 1 are included, and the rotating speed of the stirring blade 31 inside and outside the suction cylinder 1 is adjusted, so as to improve the installation stability of the suction cylinder 1.

[0071] It can be understood that the rotation speed of the stirring blade 31 can also be adjusted according to the hardness of the soil layer. The rotation speed is adjusted according to the obtained hardness of the soil layer to match the rotation speed of the stirring blade 31 with the soil layer, thereby improving the sinking speed of the suction cylinder 1.

[0072] For example, the sinking verticality of the suction cylinder 1 can be adjusted by the number of rotations and the rotation speed of the stirring blade 31 at different positions, so as to avoid the situation that the suction cylinder 1 deviates to one side. When the left end of the suction cylinder 1 drops too fast, the degree of disturbance of the left end of the suction cylinder 1 by the stirring blade 31 is reduced by reducing the number of starts and / or the rotation speed of the stirring blade 31 on the left side, and the degree of disturbance of the right end of the suction cylinder 1 by the stirring blade 31 is increased by increasing the number of starts and / or the rotation speed of the stirring blade 31 on the right side, so that the suction cylinder 1 keeps sinking vertically.

[0073] When the suction cylinder 1 drops to a preset position, high-pressure slurry is injected into the suction cylinder 1 through the grouting pipe 2, and the slurry is fully mixed with the soil body by the rotation of the stirring blade 31. During the mixing of the slurry and the soil body, the rotation speed and angle of the stirring blade 31 can be adjusted by the flow of the slurry, so that the soil body around the suction cylinder 1 is uniformly mixed with the slurry, the strength of the soil body is rapidly improved, and the bearing capacity of the foundation is improved. In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0074] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0075] In the present application, unless specifically defined otherwise, the terms "mounting", "connected", "connection", "fixed", and the like, should be construed broadly and can be either fixed or detachable connection, can be mechanical or electrical connection or communication with each other, can be direct connection or indirect connection through an intermediate medium, can be internal connection of two elements or interaction relationship between two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0076] In the present application, unless specifically defined otherwise, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0077] In the present application, the terms "one embodiment", "some embodiments", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0078] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. An offshore wind turbine foundation reinforcement device, characterized in that, The offshore wind turbine foundation reinforcing device comprises: a suction cylinder; a grouting pipe connected to the suction cylinder, the grouting pipe being provided with a through hole, and the grouting pipe being used for conveying slurry; a disturbance assembly comprising an agitator, the agitator being arranged on the suction cylinder and rotating to disturb the soil around the suction cylinder; the agitator comprises a first blade, a second blade and a third blade, the disturbance assembly further comprises a rotating shaft, the second blade being connected to the rotating shaft, and the first blade and the third blade being arranged on both sides of the second blade and connected to the rotating shaft respectively; the disturbance assembly further comprises a telescopic component connected to the first blade and the third blade respectively, the telescopic component being used to adjust the included angle between the first blade and the third blade and the included angle between the first blade and the second blade; the telescopic component comprises a first telescopic rod and a second telescopic rod, one end of the first telescopic rod being connected to the first blade, the other end of the first telescopic rod being connected to the rotating shaft, one end of the second telescopic rod being connected to the third blade, and the other end of the second telescopic rod being connected to the rotating shaft.

2. Offshore windmill foundation reinforcement device according to claim 1, characterized in that, the agitator comprises a first agitator and a second agitator, the first agitator being arranged on the outer wall surface of the suction cylinder, and the second agitator being arranged on the inner wall surface of the suction cylinder.

3. Offshore windmill foundation reinforcement device according to claim 2, characterized in that, the number of the first agitators is set to be multiple, the multiple first agitators being arranged at intervals in the circumferential direction of the outer wall surface of the suction cylinder, and the number of the second agitators is set to be multiple, the multiple second agitators being arranged at intervals in the circumferential direction of the inner wall surface of the suction cylinder.

4. Offshore windmill foundation reinforcement device according to claim 3, characterized in that, the multiple first agitators are divided into multiple groups of first agitators, the multiple groups of first agitators being arranged at intervals in the height direction of the suction cylinder, and the multiple second agitators are divided into multiple groups of second agitators, the multiple groups of second agitators being arranged at intervals in the height direction of the suction cylinder.

5. Offshore windmill foundation reinforcement device according to claim 1, characterized in that, the disturbance assembly further comprises a driving component connected to the rotating shaft to drive the agitator to rotate.

6. Offshore windmill foundation reinforcement device according to any of the claims 1-5, characterized in that, the offshore wind turbine foundation reinforcing device further comprises a drag-reducing ring arranged on the inner wall surface and the outer wall surface of the suction cylinder, and the number of the drag-reducing rings is set to be multiple, the multiple drag-reducing rings being arranged at intervals on the inner wall surface and the outer wall surface of the suction cylinder.

7. A method of offshore wind turbine foundation reinforcement, characterized in that, The offshore wind turbine foundation reinforcing device is used in the method, and the method comprises: when the wind turbine foundation is sinking, the disturbance assembly rotates to cut the soil around the wind turbine foundation; when the wind turbine foundation sinks to a preset position, slurry is injected into the grouting pipe, and the disturbance assembly rotates to uniformly mix the slurry and the soil.

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