Deepwater floating type vertical axis wind generating set

Abstract

The utility model discloses a deepwater floating type vertical axis wind generating set, which relates to the technical field of wind power generation and comprises a supporting foundation (4) with the bottom inserted into a seabed mud surface, a generator (3) connected to the upper end of the supporting foundation (4), a main shaft (2) rotationally connected with the generator (3) and blades (1) connected to the main shaft (2). The axis direction of the main shaft (2) is the same as that of the supporting foundation (4), and the main shaft (2) is located above the supporting foundation (4); the upper ends of the tensioning ropes (7) are rotationally connected with the upper end of the main shaft (2), the lower ends of the tensioning ropes (7) are fixed in seabed mud through a seabed pile foundation (8), and gaps are formed between the tensioning ropes (7) and the blades (1). The diameter of the supporting foundation and the depth of the supporting foundation inserted into the mud surface of the deepwater floating type vertical-axis wind generating set are reduced, and the cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, in particular to a deep-water floating vertical-axis wind power generator set. Background Art

[0002] With the continuous development of offshore wind power, offshore resources are becoming increasingly scarce, and the development of wind power in deep and deep sea areas faces technical and cost challenges brought by the water depth.

[0003] At present, floating wind turbines are usually used for wind power development in deep sea areas with a water depth of more than 60m. In the existing technology, the wind turbine blade load and the overturning moment generated by the wave load of the floating wind turbine are mainly borne by the supporting foundation. In order to resist the wind overturning moment and tower bottom load generated by the wind turbine, the supporting foundation of the floating wind turbine is generally designed to be relatively large. Usually, the supporting foundation diameter reaches 10m, and the supporting foundation is driven into the seabed mud for more than 80 meters. The weight of the floating wind turbine is greater than 500t / MW, which greatly increases the cost of the supporting foundation. The construction cost of the floating wind turbine is high, and the road to cost reduction of deep-water floating wind turbines is still long and arduous.

[0004] In summary, how to effectively reduce the cost of deep-water floating vertical axis wind turbines is an issue that those skilled in the art urgently need to resolve. Utility Model Content

[0005] The utility model aims to provide a deep-water floating vertical axis wind turbine generator set, the supporting foundation diameter and the depth of insertion into the mud surface of the deep-water floating vertical axis wind turbine generator set are reduced, and the cost is greatly reduced.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] A deep-water floating vertical axis wind turbine generator set comprises a supporting foundation with its bottom inserted into the seabed mud surface, a generator connected to the upper end of the supporting foundation, a main shaft rotatably connected to the generator, and blades connected to the main shaft, wherein the main shaft has the same direction as the axis of the supporting foundation and is located above the supporting foundation; and further comprises a plurality of tension ropes whose upper ends are rotatably connected to the upper end of the main shaft, wherein the lower ends of the tension ropes are fixed in the seabed mud through seabed pile foundations, and there is a gap between the tension ropes and the blades.

[0008] Optionally, a suction cylinder is further included, the lower end of the supporting base is fixedly connected to the suction cylinder, the suction cylinder is fixed in the seabed mud, and the suction cylinder is hinged to the seabed mud.

[0009] Optionally, the diameter of the suction cylinder is 2-5 times the diameter of the supporting base, and the upper surface of the suction cylinder is flush with the mud surface of the seabed mud.

[0010] Optionally, it also includes a connecting frame connected to the upper end of the main shaft, the connecting frame is rotatably connected to the main shaft, the upper end of the tensioning rope is connected to the edge of the connecting frame, and the connection point between the tensioning rope and the connecting frame has a vertical distance to the main shaft.

[0011] Optionally, the connection point between the tension rope and the connecting frame is on a first circle with the main shaft as the central axis, and the plurality of seabed pile foundations are on a second circle with the main shaft as the central axis, and the radius of the first circle is smaller than the radius of the second circle.

[0012] Optionally, the connecting frame has at least three cross braces, the number of the cross braces is the same as the number of the tensioning ropes, the cross braces are perpendicular to the main axis, multiple cross braces are on the same plane, and the angles between the cross braces are equal.

[0013] Optionally, the seabed pile foundation is shared by a plurality of the deep-water floating vertical-axis wind turbine generator sets.

[0014] Optionally, it also includes:

[0015] A tension sensor for detecting the tension of the tension rope;

[0016] A tension adjusting unit is connected to the tension sensor and is used to adjust the tension of the tension rope when the current tension value of the tension rope exceeds the theoretical pressure range.

[0017] Optionally, it also includes:

[0018] A distance sensor for detecting the minimum distance between the blade and the tension rope;

[0019] A position adjustment unit connected to the distance sensor is used to control the seabed pile foundation to move to a side away from the main axis when the current minimum distance between the blade and the tensioning rope is less than the theoretical minimum distance.

[0020] Optionally, the seabed pile foundation is vertically inserted into the seabed mud, and the upper end of the seabed pile foundation is exposed from the seabed mud surface, further comprising:

[0021] A length sensor for detecting the length of the seabed pile foundation exposed from the seabed mud surface;

[0022] A position reinforcement unit connected to the length sensor controls the submarine pile foundation to move downward toward the submarine mud or / and reinforces the submarine mud around the submarine pile foundation when the current length of the submarine pile foundation exposed above the submarine mud surface is greater than the theoretical safe length.

[0023] The beneficial effect of the utility model is that the bottom of the supporting foundation enters the seawater and is inserted into the seabed mud surface, and the supporting foundation is fixed by the seabed mud. The generator is connected to the upper end of the supporting foundation, the lower end of the main shaft is rotatably connected to the upper end of the generator, and the blades are connected to the side wall of the main shaft, which can be connected by welding or screws, and the blades are supported by the main shaft. The main shaft rotates relative to the generator under the action of wind following the blades, thereby driving the generator to generate electricity. The main shaft is located above the supporting foundation, and the main shaft has the same axial direction as the supporting foundation. The supporting foundation supports the generator, the main shaft and the blades.

[0024] The main shaft extends upward, the upper ends of multiple tension ropes are connected to the upper end of the main shaft, and the lower ends of the tension ropes are connected to the seabed pile foundation. The seabed pile foundation is driven into the seabed mud to achieve the connection of the tension ropes and form a support structure. Optionally, the tension rope is a steel cable, which has high strength and is not easy to break. The tension rope is connected to the main shaft for rotation, that is, the position of the tension rope is fixed, the tension rope does not rotate with the main shaft, and the tension rope does not interfere with the rotation of the main shaft. There is a gap between the tension rope and the blade, that is, the tension rope does not contact the blade, the rotation of the blade will not touch the tension rope, and the tension rope does not interfere with the rotation of the blade.

[0025] By applying the technical solution provided by the embodiment of the utility model, the top of the main shaft is tensionedly connected to the seabed pile foundation through a tension rope, thereby changing the stress form of the entire wind turbine support structure. The overturning moment generated by the blade load and wave load is mainly borne by the tension rope, the top load of the support foundation will be greatly reduced, the diameter of the support foundation can be greatly reduced, thereby reducing the weight of the support foundation and significantly reducing the cost of the support foundation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the structure of a deep-water floating vertical axis wind turbine generator set provided in a specific implementation manner of the utility model;

[0028] Figure 2 Distribution diagram of shared seabed pile foundations for multiple deepwater floating vertical axis wind turbines.

[0029] The following are marked in the accompanying drawings:

[0030] Blade 1, main shaft 2, generator 3, supporting foundation 4, suction cylinder 5, cross brace 6, tension rope 7, seabed pile foundation 8. DETAILED DESCRIPTION

[0031] The core of the utility model is to provide a deep-water floating vertical-axis wind turbine generator set, the supporting foundation diameter and the insertion depth of the deep-water floating vertical-axis wind turbine generator set are reduced, and the cost is greatly reduced.

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Please refer to Figure 1 to Figure 2 , Figure 1 A schematic diagram of the structure of a deep-water floating vertical axis wind turbine generator set provided in a specific implementation manner of the utility model; Figure 2 Distribution diagram of shared seabed pile foundations for multiple deepwater floating vertical axis wind turbines.

[0034] In a specific embodiment, the deep-water floating vertical axis wind turbine generator set provided by the utility model includes a supporting foundation 4 with its bottom inserted into the seabed mud surface, a generator 3 connected to the upper end of the supporting foundation 4, a main shaft 2 rotatably connected to the generator 3, and blades 1 connected to the main shaft 2. The main shaft 2 has the same axial direction as the supporting foundation 4, and the main shaft 2 is located above the supporting foundation 4; it also includes a plurality of tension ropes 7 whose upper ends are rotatably connected to the upper end of the main shaft 2, and the lower ends of the tension ropes 7 are fixed in the seabed mud through seabed pile foundations 8, and there is a gap between the tension ropes 7 and the blades 1.

[0035] In the above structure, the deep-water floating vertical axis wind turbine generator set includes a supporting foundation 4 , a generator 3 , a main shaft 2 , blades 1 and a tension rope 7 .

[0036] The bottom of the support foundation 4 enters the seawater and is inserted into the seabed mud surface, and the support foundation 4 is fixed by the seabed mud. The generator 3 is connected to the upper end of the support foundation 4, the lower end of the main shaft 2 is rotatably connected to the upper end of the generator 3, and the blades 1 are connected to the side wall of the main shaft 2, which can be connected by welding or screws, and the blades 1 are supported by the main shaft 2. The main shaft 2 rotates relative to the generator 3 with the blades 1 under the action of the wind, thereby driving the generator 3 to generate electricity. The main shaft 2 is located above the support foundation 4, and the main shaft 2 and the support foundation 4 have the same axial direction. The support foundation 4 supports the generator 3, the main shaft 2 and the blades 1.

[0037] The main shaft 2 extends upward, and the upper ends of multiple tension ropes 7 are connected to the upper end of the main shaft 2, and the lower ends of the tension ropes 7 are connected to the seabed pile foundation 8. The seabed pile foundation 8 is driven into the seabed mud to achieve the connection of the tension ropes 7 and form a support structure. Optionally, the tension ropes 7 are steel cables, which have high strength and are not easy to break. The tension ropes 7 are rotatably connected to the main shaft 2, that is, the position of the tension ropes 7 is fixed, the tension ropes 7 do not rotate with the main shaft 2, and the tension ropes 7 do not interfere with the rotation of the main shaft 2. There is a gap between the tension ropes 7 and the blades 1, that is, the tension ropes 7 do not contact the blades 1, and the rotation of the blades 1 will not touch the tension ropes 7, and the tension ropes 7 do not interfere with the rotation of the blades 1.

[0038] By applying the technical solution provided by the embodiment of the utility model, the top of the main shaft 2 is tensionedly connected to the seabed pile foundation 8 through the tension rope 7, thereby changing the force form of the entire wind turbine support structure. The overturning moment generated by the blade 1 load and the wave load is mainly borne by the tension rope 7, the top load of the support foundation 4 will be greatly reduced, and the diameter of the support foundation 4 can be greatly reduced, thereby reducing the weight of the support foundation 4 and significantly reducing the cost of the support foundation 4.

[0039] On the basis of the above-mentioned specific embodiments, a suction cylinder 5 is further included, the lower end of the supporting foundation 4 is fixedly connected to the suction cylinder 5, and the suction cylinder 5 is fixed in the seabed mud.

[0040] In a specific embodiment, the suction cylinder 5 is connected to the lower end of the support base 4. Specifically, the upper end of the suction cylinder 5 may have a socket, the lower end of the support base 4 is inserted into the socket, and the support base 4 and the suction cylinder 5 are connected by welding. The suction cylinder 5 is inserted into the seabed mud, and the support base 4 is fixed in the seabed mud by the suction cylinder 5. The suction cylinder 5 is easy to install. First, the suction cylinder 5 is positioned to the designed position, and then the seawater in the cylinder is pumped out to reduce the pressure in the suction cylinder 5, and negative pressure occurs. At this time, the water pressure outside the cylinder is greater than the pressure inside the cylinder. Due to the pressure difference, a sinking force is generated, and the foundation of the suction cylinder 5 gradually sinks to the designed depth. This installation method does not require the use of external forces such as piling, which can greatly save the cost of rock-embedded piling, and has the characteristics of convenient construction and installation, no noise, reusable, and easy dismantling. At the same time, the diameter of the suction cylinder 5 is much larger than that of the support base 4. After the suction cylinder 5 is inserted into the seabed mud, it will not sink too much, has less deformation, and has a higher anti-overturning bearing capacity.

[0041] On the basis of the above-mentioned specific embodiments, the suction cylinder 5 is hinged to the seabed mud and can rotate around the seabed mud. The suction cylinder 5 limits the horizontal and vertical displacement of the supporting foundation 4, but does not limit the swing displacement, that is, it does not constrain the rotation of the supporting foundation 4, allows a certain degree of rotation or movement, and has a flexible connection. It can withstand the horizontal thrust generated by the blade 1 load and the wave load, and can reduce the diameter and weight of the supporting foundation 4. At the same time, it adapts to the uneven settlement of the seabed, the dynamic load generated by the operation of the wind turbine 3 groups, and other challenges in the marine environment to ensure the reliability and efficiency of the entire offshore wind farm.

[0042] Based on the above-mentioned specific embodiments, the diameter of the suction cylinder 5 is 2-5 times the diameter of the supporting base 4 .

[0043] In a specific embodiment, the diameter of the suction cylinder 5 is larger than the diameter of the supporting base 4. Further, the diameter of the suction cylinder 5 is 2-5 times the diameter of the supporting base 4. For example, the diameter of the supporting base 4 is 5m, and the diameter of the suction cylinder 5 is 10m. The diameter of the suction cylinder 5 is relatively large, and the suction cylinder 5 will not sink too much after being inserted into the seabed mud, and has less deformation and higher anti-overturning bearing capacity, thereby reducing the diameter of the supporting base 4, reducing the weight of the supporting base 4, saving materials, and reducing costs.

[0044] Since the suction cylinder 5 is energy-saving and environmentally friendly and can be reused, the upper surface of the suction cylinder 5 is flush with the mud surface of the seabed mud, and the upper surface of the suction cylinder 5 is exposed, which is easy to be taken out and reused, and convenient to adjust the position.

[0045] Based on the above-mentioned specific embodiments, it also includes a connecting frame connected to the upper end of the main shaft 2, the connecting frame is rotatably connected to the main shaft 2, the upper end of the tensioning rope 7 is connected to the edge of the connecting frame, and the connection point between the tensioning rope 7 and the connecting frame has a vertical distance to the main shaft 2.

[0046] In a specific embodiment, the connecting frame is connected to the upper end of the main shaft 2, and the center of the connecting frame has a connecting hole, which is sleeved on the main shaft 2. The connecting frame and the main shaft 2 are connected by rotation, the connecting frame is fixed, and the main shaft 2 rotates in the connecting hole.

[0047] In a preferred embodiment, the two ends of the main shaft 2 are respectively connected to the connecting frame and the generator 3 through bearings, for example, the connecting hole is connected to the inner ring of the bearing, and the main shaft 2 is connected to the outer ring of the bearing. The diameter of the main shaft 2 is equal to the diameter of the supporting base 4, and the diameter of the main shaft 2 and the diameter of the supporting base 4 are both small. In other words, the entire main shaft 2 serves as a bearing rotor, and both the upper and lower ends are connected to the bearing stator, so the bearing mainly bears horizontal force and a small amount of bending moment, which can effectively reduce the load of the bearings at both ends, thereby reducing the cost of the bearing.

[0048] The upper end of the tensioning rope 7 is connected to the edge of the connecting frame. Specifically, the connecting frame may have a pulling hole, and the upper end of the tensioning rope 7 may have a pulling hook, which is connected to the pulling hole. The pulling hook has an anti-slip component, which can realize a detachable connection and prevent the pulling hook from detaching from the pulling hole.

[0049] The connection point between the tension rope 7 and the connecting frame is at a vertical distance from the main shaft 2. In other words, on the horizontal plane projection, there is a horizontal distance between the connection point between the tension rope 7 and the connecting frame and the projection of the main shaft 2. That is to say, with the projection of the main shaft 2 as the base point, the connecting frame has a horizontal component, and the edge of the connecting frame is located on a pitch circle with the main shaft 2 as the center. After the upper end of the tension rope 7 is connected to the edge of the connecting frame, when the tension rope 7 does not contact the blade 1, the height of the main shaft 2 can be lowered, thereby improving the stability of the wind turbine 3 group.

[0050] Based on the above-mentioned specific embodiments, the connection point between the tension rope 7 and the connecting frame is on a first circle with the main shaft 2 as the central axis, and multiple submarine pile foundations 8 are on a second circle with the main shaft 2 as the central axis, and the radius of the first circle is smaller than the radius of the second circle.

[0051] In practical applications, the connection points of the multiple tension ropes 7 and the connecting frame are at equal horizontal distances from the main axis 2, that is, on a first circle with the main axis 2 as the central axis. The multiple seabed pile foundations 8 are at equal horizontal distances from the main axis 2, that is, on a second circle with the main axis 2 as the central axis. The radius of the first circle is smaller than the radius of the second circle, and the tension ropes 7 are inclined outward from top to bottom, and the stability of the tension ropes 7 is relatively high; the tension of each tension rope 7 is relatively uniform, and the tension of the tension ropes 7 is easy to control and adjust.

[0052] On the basis of the above-mentioned specific embodiments, the connecting frame has at least three cross braces 6 , and the number of the cross braces 6 is the same as the number of the tensioning ropes 7 .

[0053] In practical applications, the number of cross braces 6 is greater than or equal to the number of tension ropes 7. In order to better connect the main shaft 2, the number of tension ropes 7 is at least three. The force exerted by the tension ropes 7 on the main shaft 2 forms a plane, thereby improving the carrying capacity of the tension ropes 7 against the load on the wind turbine blades 1 and the overturning moment generated by the wave load.

[0054] When the number of cross braces 6 is the same as the number of tensioning ropes 7, the cross braces 6 are connected one-to-one with the tensioning ropes 7, and the structure of the connecting frame is simple; when the number of cross braces 6 is greater than the number of tensioning ropes 7, after the tensioning ropes 7 are connected, there are remaining cross braces 6 for use in connecting more tensioning ropes 7.

[0055] On the basis of the above-mentioned specific embodiments, the cross brace 6 is perpendicular to the main axis 2 . Optionally, the cross brace 6 is a straight rod with a simple structure and convenient processing, which reduces the weight of the connecting frame, that is, reduces the top load of the supporting foundation 4 .

[0056] Based on the above specific embodiments, a plurality of cross braces 6 are on a plane, and the angles between the cross braces 6 are equal.

[0057] In practical applications, multiple cross braces 6 are of equal height and are located on a plane that is perpendicular to the main axis 2. The connecting frame structure is centrally symmetrical. The intervals between the connecting tension ropes 7 are equal. The tension ropes 7 have a uniform ability to bear the load of the blades 1 and the overturning moment generated by the wave load. The wind turbines 3 are not easy to tip over and have good stability.

[0058] Based on the above-mentioned specific embodiments, a plurality of deep-water floating vertical axis wind turbine generator sets share the seabed pile foundation 8 .

[0059] In actual applications, each wind turbine 3 has three blades 1 connected by three tension ropes 7, and multiple wind turbines 3 are arranged in a triangle. For example, n wind turbines 3 are arranged in the nth row, and n+1 wind turbines 3 are arranged in the n+1th row. The wind turbines 3 in the n+1th row are respectively located on both sides of the wind turbines 3 in the nth row, and are arranged in sequence.

[0060] Before installing the tensioned tension rope 7, first fix the seabed pile foundation 8 to the seabed. The seabed pile foundation 8 is arranged between the nth row of wind turbines 3 and the n+1th row of wind turbines 3 in the same row. The three tension ropes 7 are respectively connected to two seabed pile foundations 8 in the same row and the nearest seabed pile foundation 8 below. Multiple tension ropes 7 can be connected to the seabed pile foundation 8, so that the mooring tension ropes 7 of multiple wind turbines 3 groups share the seabed pile foundation 8, reducing the number of seabed pile foundations 8 and reducing costs.

[0061] Optionally, the suction cylinder 5 can be fixed to the seabed using a pile foundation to facilitate installation.

[0062] Based on the above specific embodiments, it also includes:

[0063] A tension sensor for detecting the tension of the tension rope 7;

[0064] A tension adjusting unit connected to the tension sensor is used to adjust the tension of the tension rope 7 when the current tension value of the tension rope 7 exceeds the theoretical pressure range.

[0065] In practical applications, the tension sensor is connected to the tension rope 7 to detect the tension of the tension rope 7 and send the tension value to the tension adjustment unit. The tension adjustment unit is provided with a theoretical pressure range for the tension of the tension rope 7. The tension adjustment unit compares the current tension value of the tension rope 7 with the theoretical pressure range. When the current tension value of the tension rope 7 exceeds the theoretical pressure range, for example, it is greater than the maximum value of the theoretical pressure range, which can be set to 10% of the breaking force of the tension rope 7, it means that the tension of the tension rope 7 is too large, that is, the tension rope 7 is too tight, and the tension rope 7 is easy to break; or it is less than the minimum value of the theoretical pressure range, which means that the tension of the tension rope 7 is too small, that is, the tension rope 7 is too loose, and the tension rope 7 has poor ability to bear the overturning moment generated by the blade 1 load and the wave load. The main force will act on the supporting foundation 4, which poses a safety hazard. In these cases, the tension adjustment unit needs to adjust the tension of the tension rope 7 again to meet the reasonable use requirements of the tension rope 7.

[0066] Based on the above specific embodiments, it also includes:

[0067] A distance sensor for detecting the minimum distance between the blade 1 and the tension rope 7;

[0068] A position adjustment unit connected to the distance sensor is used to control the seabed pile foundation 8 to move to a side away from the main shaft 2 when the current minimum distance between the blade 1 and the tensioning rope 7 is less than the theoretical minimum distance.

[0069] In practical applications, the distance sensor is installed at the upper end of the blade 1 , where the distance between the blade 1 and the tension rope 7 is the smallest. The upper end of the blade 1 does not contact the tension rope 7 , and other positions will not contact the tension rope 7 .

[0070] The distance sensor detects the minimum distance between the blade 1 and the tension rope 7, and sends the current minimum distance value to the position adjustment unit. The position adjustment unit is provided with a theoretical minimum distance. When the current minimum distance between the blade 1 and the tension rope 7 is less than the theoretical minimum distance, it means that the tension rope 7 is too close to the blade 1. After the tension rope 7 is disturbed by the wind or the external environment such as the wind turbine 3, there is a risk of contact with the blade 1. At this time, it is necessary to adjust the position of the seabed pile foundation 8 in time, move the seabed pile foundation 8 to the side away from the main shaft 2, increase the inclination of the tension rope 7, increase the horizontal component of the tension rope 7 from the blade 1, and increase the distance between the tension rope 7 and the blade 1 to prevent the tension rope 7 from interfering with the rotation of the blade 1.

[0071] On the basis of the above-mentioned specific embodiments, the seabed pile foundation 8 is vertically inserted into the seabed mud, and the upper end of the seabed pile foundation 8 is exposed from the seabed mud surface, and further includes:

[0072] A length sensor for detecting the length of the seabed pile foundation 8 exposed above the seabed mud surface;

[0073] A position reinforcement unit connected to the length sensor controls the subsea pile foundation 8 to move downward toward the subsea mud or / and reinforces the subsea mud around the subsea pile foundation 8 when the current length of the subsea pile foundation 8 exposed above the subsea mud surface is greater than the theoretical safe length.

[0074] In actual application, the seabed pile foundation 8 is vertically inserted into the seabed mud, and the upper end of the seabed pile foundation 8 is exposed to the seabed mud surface, and the upper end is set at a height from the seabed mud surface. The length sensor is connected to the upper end of the seabed pile foundation 8 to detect the length of the seabed pile foundation 8 exposed to the seabed mud surface, and send the current length value to the position reinforcement unit. The position reinforcement unit is provided with a theoretical safety length. The position reinforcement unit compares the current length of the seabed pile foundation 8 exposed to the seabed mud surface with the theoretical safety length. When the current length of the seabed pile foundation 8 exposed to the seabed mud surface is greater than the theoretical safety length, it means that the distance of the seabed pile foundation 8 being pulled out from the seabed mud is too large, and the seabed pile foundation 8 is not firmly fixed, and there is a risk of falling out. At this time, the position reinforcement unit needs to reinforce the seabed pile foundation 8, which can control the seabed pile foundation 8 to move down to the seabed mud, and can also reinforce the seabed mud around the seabed pile foundation 8 to ensure that the seabed pile foundation 8 is firmly and reliably fixed, so as to bear the overturning moment generated by the blade 1 load and the wave load, reduce the top load of the support foundation 4, and thus reduce the weight of the support structure.

[0075] Optionally, the diameter of the seabed pile foundation 8 is smaller than the diameter of the supporting foundation 4 , for example, the diameter of the seabed pile foundation 8 is 3-5 m, and the diameter of the supporting foundation 4 is 5 m.

[0076] In a preferred embodiment, it also includes an alarm unit connected to the tension sensor, the distance sensor, and the length sensor. When the detection values ​​of the tension sensor, the distance sensor, and the length sensor exceed the theoretical values, an alarm is issued to remind the staff to eliminate the hidden dangers in time.

[0077] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0078] The above is a detailed introduction to the deep-water floating vertical axis wind turbine provided by the utility model. This article uses specific examples to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model. Therefore, the utility model will not be limited to the embodiments shown in this article, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A deep-water floating vertical axis wind turbine generator set, characterized in that: The invention comprises a support base (4) whose bottom is inserted into the seabed mud surface, a generator (3) connected to the upper end of the support base (4), a main shaft (2) rotatably connected to the generator (3), and a blade (1) connected to the main shaft (2), wherein the main shaft (2) and the support base (4) have the same axial direction, and the main shaft (2) is located above the support base (4); and further comprises a plurality of tension ropes (7) whose upper ends are rotatably connected to the upper end of the main shaft (2), wherein the lower ends of the tension ropes (7) are fixed in the seabed mud through a seabed pile foundation (8), and there is a gap between the tension ropes (7) and the blades (1).

2. The deep-water floating vertical axis wind turbine generator set according to claim 1, characterized in that: It also comprises a suction cylinder (5), the lower end of the support base (4) is fixedly connected to the suction cylinder (5), the suction cylinder (5) is fixed in the seabed mud, and the suction cylinder (5) is hinged to the seabed mud.

3. The deep-water floating vertical axis wind turbine generator set according to claim 2, characterized in that: The diameter of the suction cylinder (5) is 2-5 times the diameter of the support base (4), and the upper surface of the suction cylinder (5) is flush with the mud surface of the seabed mud.

4. The deep-water floating vertical axis wind turbine generator set according to claim 2, characterized in that: It also comprises a connecting frame connected to the upper end of the main shaft (2), the connecting frame being rotatably connected to the main shaft (2), the upper end of the tension rope (7) being connected to the edge of the connecting frame, and the connection point between the tension rope (7) and the connecting frame being at a vertical distance from the main shaft (2).

5. The deep-water floating vertical axis wind turbine generator set according to claim 4, characterized in that: The connection point between the tension rope (7) and the connecting frame is on a first circle with the main shaft (2) as the central axis, and the plurality of seabed pile foundations (8) are on a second circle with the main shaft (2) as the central axis, and the radius of the first circle is smaller than the radius of the second circle.

6. The deep-water floating vertical axis wind turbine generator set according to claim 4, characterized in that: The connecting frame has at least three cross braces (6), the number of the cross braces (6) is the same as the number of the tension ropes (7), the cross braces (6) are perpendicular to the main axis (2), a plurality of the cross braces (6) are on the same plane, and the angles between the cross braces (6) are equal.

7. The deep-water floating vertical axis wind turbine generator set according to claim 1, characterized in that: The seabed pile foundation (8) is shared by a plurality of the deep-water floating vertical-axis wind turbine generator sets.

8. The deep-water floating vertical axis wind turbine generator set according to any one of claims 1 to 7, characterized in that: Also includes: A tension sensor for detecting the tension of the tension rope (7); A tension adjustment unit is connected to the tension sensor and is used to adjust the tension of the tension rope (7) when the current tension value of the tension rope (7) exceeds the theoretical pressure range.

9. The deep-water floating vertical axis wind turbine generator set according to any one of claims 1 to 7, characterized in that: Also includes: A distance sensor for detecting the minimum distance between the blade (1) and the tension rope (7); A position adjustment unit connected to the distance sensor and used to control the seabed pile foundation (8) to move to a side away from the main shaft (2) when the current minimum distance between the blade (1) and the tension rope (7) is less than the theoretical minimum distance.

10. The deep-water floating vertical axis wind turbine generator set according to any one of claims 1 to 7, characterized in that: The seabed pile foundation (8) is vertically inserted into the seabed mud, and the upper end of the seabed pile foundation (8) is exposed from the seabed mud surface, and further comprises: A length sensor for detecting the length of the seabed pile foundation (8) exposed above the seabed mud surface; A position reinforcement unit connected to the length sensor controls the submarine pile foundation (8) to move downward toward the submarine mud or / and reinforces the submarine mud around the submarine pile foundation (8) when the current length of the submarine pile foundation (8) exposed above the submarine mud surface is greater than the theoretical safe length.

Images