Tension leg assembly, fan foundation and wind generating set

Abstract

The utility model relates to a tension leg assembly, a fan foundation and a wind generating set, the tension leg assembly comprises: a vertical arm main body, which comprises a stand column and a mooring connection part arranged on the stand column, and the mooring connection part is used for being connected with a mooring cable; the floating assembly is arranged on the stand column and comprises two or more floating bodies distributed in the axial direction of the stand column, and each floating body has the moving freedom degree relative to the stand column in the axial direction and is detachably connected with the stand column; the driving assembly is arranged on the stand column and connected with the floating assembly, and the driving assembly drives the floating body to move to a preset position relative to the stand column in the axial direction. According to the tension leg assembly, the fan foundation and the wind generating set provided by the embodiment of the utility model, when the tension leg assembly is used for the fan foundation, the construction difficulty is low, and the construction cost can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of wind power, in particular to a tension leg assembly, a fan foundation and a wind turbine generator. BACKGROUND

[0002] With the development of offshore wind power industry in recent years, the shallow water resource is decreasing, and with the increase of water depth to more than 70 meters, the cost of traditional fixed offshore wind turbine increases significantly, which cannot meet the demand of offshore wind power construction and cost. The floating wind turbine in deep water will have a significant cost advantage than the fixed wind turbine, which is an important direction of future wind power industry development.

[0003] The tension leg type wind turbine foundation has good motion performance, and relies on the tensioned tension leg to ensure stability during work, so it is widely used in wind turbine foundations.

[0004] However, the tension leg type wind turbine foundation in the related art has defects such as construction difficulty and high construction cost when used in wind turbine foundation due to design defects of the tension leg structure. INVENTION CONTENTS

[0005] The utility model embodiment provides a tension leg assembly, a fan foundation and a wind turbine generator, the tension leg assembly has low construction difficulty when used in the fan foundation, and can reduce the construction cost.

[0006] On the one hand, according to the tension leg assembly of the fan foundation provided by the utility model embodiment, the tension leg assembly comprises: a vertical arm main body, comprising a vertical column, a mooring connection part arranged on the vertical column, the mooring connection part being used for being connected with a mooring cable; a floating assembly arranged on the vertical column, the floating assembly comprising two or more floating bodies distributed along the axial direction of the vertical column, each floating body having a movement degree of freedom along the axial direction relative to the vertical column and being detachably connected with the vertical column; a driving assembly arranged on the vertical column and connected with the floating assembly, the driving assembly driving the floating bodies of the floating assembly to move along the axial direction to a predetermined position.

[0007] According to one aspect of the utility model embodiment, the floating assembly further comprises a connecting piece, the connecting piece being detachably connected between the adjacent two floating bodies along the axial direction, and the driving assembly driving the floating bodies of the floating assembly to move synchronously along the axial direction.

[0008] According to one aspect of the utility model embodiment, the vertical column is provided with a guide rail extending along the axial direction, and the floating body is provided with a moving block, the moving block being clamped on the guide rail and having a movement degree of freedom along the axial direction relative to the guide rail.

[0009] According to one aspect of the utility model embodiment, the driving assembly comprises a driving piece and a traction piece, the traction piece being connected with the floating body, and the driving piece driving the traction piece to move or retracting and releasing the traction piece, so that the floating body moves along the axial direction relative to the vertical column.

[0010] According to an aspect of the embodiment of the utility model, the driving assembly further includes a guide wheel arranged on one side of the column in the axial direction, the driving member is arranged on the side of the column away from the guide wheel, the traction member includes a flexible cable, the flexible cable is arranged around the guide wheel, one end of the flexible cable is connected with the floating body, the other end of the flexible cable is connected with the driving member, the driving member includes one of the first tensioner and the winch and can wind and unwind the flexible cable.

[0011] According to an aspect of the embodiment of the utility model, the column has a cavity, the first cable tube is arranged in the cavity, in the axial direction, one end of the first cable tube penetrates the top wall of the column and the other end penetrates the bottom wall of the column, the flexible cable passes through the first cable tube and is connected with the driving member.

[0012] According to an aspect of the embodiment of the utility model, the number of the floating assemblies is multiple, the multiple floating assemblies are distributed at intervals in the circumferential direction of the column, and each floating assembly is correspondingly provided with a driving assembly.

[0013] According to an aspect of the embodiment of the utility model, the floating body includes an air bag, the air bag has a cavity, and the air bag includes one of a rubber wall and a metal wall.

[0014] According to an aspect of the embodiment of the utility model, the second cable tube is arranged in the column, one end of the second cable tube penetrates the top wall of the column and the other end penetrates the bottom wall of the column, the mooring connecting part includes an adapter chain and a second tensioner, the adapter chain is arranged in the second cable tube, one end of the adapter chain is connected with the second tensioner, and the other end of the adapter chain is used for being connected with the mooring cable.

[0015] According to an aspect of the embodiment of the utility model, the second cable tube and the column are coaxially arranged with each other.

[0016] In another aspect, the utility model provides a wind turbine foundation, which comprises: a floating body; the tension leg assembly described above, a plurality of tension leg assemblies are arranged at intervals around the floating body and are connected with the floating body respectively; a mooring cable, one end of the mooring cable is connected with the mooring connecting part, and the other end of the mooring cable is fixed to the seabed.

[0017] In still another aspect, the utility model provides a wind turbine generator, which comprises the wind turbine foundation described above.

[0018] According to the tension leg assembly, the fan foundation and the wind turbine generator provided by the embodiment of the utility model, the tension leg assembly comprises a vertical arm main body, a floating assembly and a driving assembly, the vertical arm main body comprises a stand column and a mooring connecting part arranged on the stand column, the mooring connecting part is used for being connected with a mooring cable, the floating assembly is arranged on the stand column, and the floating assembly comprises two or more floating bodies distributed along the axial direction of the stand column. When the fan foundation is constructed at sea, the floating bodies can be installed to the stand column, the relative position between the floating bodies and the stand column is kept after the floating bodies are driven to move to the appropriate position along the axial direction by the driving assembly, the fan foundation where the tension leg assembly is located is made to float on the sea surface by the buoyancy of the floating assembly, and the fan foundation can be transferred to the sea area to be fixed in the mode of being towed. When the fan foundation where the tension leg assembly is located is moved to the predetermined sea area and the mooring cable is connected with the mooring connecting part, the floating bodies can be released by the driving assembly, so that the floating bodies move along the axial direction relative to the stand column under the action of the external force such as the buoyancy, so as to be arranged separately from the stand column, and the construction of the fan foundation is completed, so that the tension leg assembly has low construction difficulty when being used for the fan foundation, and the construction cost can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] The features, advantages, and technical effects of the exemplary embodiments of the utility model will be described below with reference to the drawings.

[0020] Figure 1 It is a structural schematic view of the wind turbine generator of one embodiment of the utility model;

[0021] Figure 2 It is a structural schematic view of the tension leg assembly of one embodiment of the utility model;

[0022] Figure 3 It is Figure 2 The sectional view along the A-A direction in it;

[0023] Figure 4 It is Figure 2 The sectional view along the B-B direction in it;

[0024] Figure 5 It is Figure 4 The local enlarged view of C in it.

[0025] Label explanation:

[0026] 100, tension leg assembly;

[0027] 10, vertical arm main body;

[0028] 11, stand column; 111, top wall; 112, bottom wall; 113, side wall; 114, first position giving hole; 115, second position giving hole;

[0029] 12, mooring connecting part; 121, second tensioner; 122, adapter chain;

[0030] 13 guide rail; 14 moving block; 15 first cable tube; 16 second cable tube;

[0031] 20 floating assembly; 21 floating body; 22 connecting piece;

[0032] 30 driving assembly; 31 driving piece; 32 traction piece;

[0033] 40 guide wheel;

[0034] 200 floating main body; 300 mooring cable; 400 tower; 500 engine room; 600 impeller; 610 hub; 620 blade;

[0035] X axial direction.

[0036] In the drawings, the same components are designated by the same reference numerals. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0037] Features and exemplary embodiments of each aspect of the present application will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one of ordinary skill in the art that the present application can be practiced without some of these specific details. The description of the embodiments is merely to provide a better understanding of the present application by showing examples of the present application. In the drawings and the following description, well-known structures and techniques are not shown in order to avoid unnecessary obscuring of the present application; and, for clarity, the dimensions of some structures can be exaggerated. In addition, the features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0038] The orientation words appearing in the following description are the directions shown in the drawings, and do not limit the specific structure of the tension leg assembly, the fan foundation, and the wind turbine generator set of the present application. In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting" and "connecting" should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be directly connected, or can be indirectly connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0039] As Figure 1As shown, the embodiment of the present application provides a wind turbine generator, which includes a wind turbine foundation and a wind turbine body. The wind turbine body includes a tower 400, a nacelle 500, a generator and a rotor 600. The tower 400 is connected to the wind turbine foundation. The nacelle 500 is arranged at the top end of the tower 400. The generator is arranged in the nacelle 500. In some examples, the generator can be located outside the nacelle 500. Of course, in some examples, the generator can also be located inside the nacelle 500. The rotor 600 includes a hub 610 and a plurality of blades 620 connected to the hub 610. The rotor 600 is connected to the rotor of the generator through the hub 610, thereby driving the rotor to rotate relative to the stator to achieve the power generation requirement of the wind turbine generator. The wind turbine foundation is floating in seawater. In order to limit the movement range thereof, the wind turbine foundation is fixed to the seabed through a mooring cable 300.

[0040] With the development of offshore wind power industry in recent years, the resources of shallow water areas are decreasing. With the increase of water depth to more than 70 meters, the cost of traditional fixed offshore wind turbines increases significantly, which cannot meet the requirements of offshore wind power construction and cost. The floating wind turbine in deep water area will have a significant cost advantage over the fixed wind turbine, which is an important direction for the development of wind power industry in the future.

[0041] The tension leg type wind turbine foundation has good movement performance and relies on the tensioned tension leg to ensure stability during work, so it is widely used in wind turbine foundations.

[0042] However, the tension leg type wind turbine foundation in the related art has defects in construction difficulty and high construction cost due to the design defects of the tension leg structure when used in the wind turbine foundation.

[0043] Therefore, an embodiment of the present application provides a new wind turbine foundation, which includes a floating body 200, a tension leg assembly 100 and a mooring cable 300. A plurality of tension leg assemblies 100 are arranged at intervals around the floating body 200 and are connected to the floating body 200 respectively. One end of the mooring cable 300 is connected to a mooring connection part 12, and the other end of the mooring cable 300 is fixed to the seabed. The tower 400 can be connected to the floating body 200.

[0044] Optionally, the floating body 200 can include a connecting column and a plurality of connecting bodies. The plurality of connecting bodies are arranged at intervals around the connecting column. Each connecting body is connected to the tension leg assembly 100 on the side away from the connecting column.

[0045] In order to reduce the construction difficulty and the construction cost, an embodiment of the present application further provides a tension leg assembly 100, which can be used in the wind turbine foundation provided by each of the above embodiments, and of course, can also be produced and sold as an independent product.

[0046] Please refer to Figures 1 to 5As shown, the tension leg assembly 100 provided by one embodiment of the present application includes a vertical arm main body 10, a floating assembly 20, and a driving assembly 30. The vertical arm main body 10 includes a vertical column 11 and a mooring connecting portion 12 arranged on the vertical column 11, and the mooring connecting portion 12 is used for connecting with a mooring cable 300. The floating assembly 20 is arranged on the vertical column 11, and the floating assembly 20 includes two or more floating bodies 21 distributed along an axial direction X of the vertical column 11. Each floating body 21 has a moving degree of freedom relative to the vertical column 11 along the axial direction X and is detachably connected with the vertical column 11. The driving assembly 30 is arranged on the vertical column 11 and connected with the floating assembly 20, and the driving assembly 30 drives the floating bodies 21 to move relative to the vertical column 11 along the axial direction X to a predetermined position.

[0047] The vertical column 11 can be a column structure with a closed cavity inside, which can be in a cylindrical shape or a polygonal column shape, and can be in a cylindrical shape.

[0048] The mooring connecting portion 12 is used for connecting with the mooring cable 300, and the mooring connecting portion 12 can be mounted on the vertical column 11. Optionally, the mooring connecting portion 12 can have the functions of connecting with the mooring cable 300 and tensioning, such as a hydraulic tensioner, a mechanical winch type tensioning device, etc.

[0049] The floating assembly 20 can include a plurality of floating bodies 21, and the floating bodies 21 can include air bags or metal can bodies with cavities, etc. The plurality of floating bodies 21 can be at least partially distributed along the axial direction X of the vertical column 11. In some embodiments, the plurality of floating bodies 21 can also be partially distributed along the circumferential direction of the vertical column 11.

[0050] Each floating body 21 can be movably connected with the vertical column 11 along the axial direction X, so that the floating body 21 has a moving degree of freedom relative to the vertical column 11. The floating body 21 and the vertical column 11 can be detachably connected with each other by driving the floating body 21 to move along the axial direction X to the end of the vertical column 11 and separate from the vertical column 11.

[0051] The driving assembly 30 can include a winch drive, a tensioning stopper drive, a telescopic cylinder drive, etc.

[0052] The tension leg assembly 100 provided by the embodiment of the present application can be connected with the floating assembly 20 when used for the floating foundation. When the wind turbine foundation is constructed at sea, the floating body 21 can be installed to the column 11, the relative position between the floating body 21 and the column 11 is kept after the floating body 21 is driven by the driving assembly 30 to move along the axial direction X to the appropriate position, the wind turbine foundation where the tension leg assembly 100 is located is floated on the sea surface by the buoyancy of the floating assembly 20, and the wind turbine foundation can be transferred to the sea area to be fixed by the way of towing. When the wind turbine foundation where the tension leg assembly 100 is located is moved to the predetermined sea area and the mooring cable 300 is connected with the mooring connecting part 12, the floating body 21 can be released by the driving assembly 30 to move along the axial direction X relative to the column 11 under the action of the external force such as the buoyancy to be arranged separately from the column 11, and the construction of the wind turbine foundation is completed. Therefore, when the tension leg assembly 100 is used for the wind turbine foundation, the construction difficulty is low, and the construction cost of the whole wind turbine foundation can be reduced.

[0053] In some optional embodiments, the tension leg assembly 100 provided by the embodiment of the present application, the floating assembly 20 further comprises a connecting part 22, and the connecting part 22 is detachably connected between the adjacent two floating bodies 21 along the axial direction X. The driving assembly 30 drives the floating bodies 21 of the floating assembly 20 to move synchronously along the axial direction X.

[0054] The connecting part 22 can comprise a connecting rod, a connecting cable or the like, and can optionally comprise a connecting cable. The connecting cable can optionally comprise a steel wire rope, a cable or the like.

[0055] The connecting part 22 can be directly or indirectly connected with the floating body 21.

[0056] The tension leg assembly 100 provided by the embodiment of the present application can drive the floating bodies 21 arranged relative to each other along the axial direction X and connected with each other to move synchronously by the same driving assembly 30, which is beneficial to the position fixing and dismounting of the floating bodies 21 on the column 11, reduces the number of the driving assemblies 30, and reduces the cost.

[0057] For example, when it is needed to add the floating body 21, the new floating body 21 can be connected to the uppermost floating body through the connecting part 22, and then the floating body 21 is inserted and connected with the column 11 in a sliding manner. The driving assembly 30 drives the floating bodies 21 to move downward along the axial direction and pulls the new floating body 21 to move downward to the predetermined position synchronously, so that the addition and position adjustment of the floating body 21 are completed.

[0058] In some optional embodiments, the tension leg assembly 100 provided by the embodiment of the present application, the column 11 is provided with a guide rail 13 extending along the axial direction X, and the floating body 21 is provided with a moving block 14 which is clamped to the guide rail 13 and has the movement freedom relative to the guide rail 13 along the axial direction X.

[0059] The number of guide rails 13 provided on the column 11 can be one or more. When there are multiple guide rails 13, they are distributed at intervals in the circumference of the column 11, and can be distributed at intervals and evenly.

[0060] Each guide rail 13 can be equipped with two or more floats 21. Each float 21 is equipped with a moving block 14, which is snapped into and slidably connected to the guide rail 13. Optionally, a connector 22 can be detachably connected between two adjacent floats 21 on the same guide rail 13.

[0061] Optionally, when there are two or more guide rails 13, each floating body 21 located on the same guide rail 13 is grouped together and connected to one of the drive components 30.

[0062] like Figure 4 , Figure 5 As shown, an embodiment of the tension leg assembly 100 provided in this application has a guide rail 13 extending along the axial direction X on the column 11 and a moving block 14 on the float 21. The moving block 14 is engaged with the guide rail 13 and has a degree of freedom of movement relative to the guide rail 13 along the axial direction X. This facilitates the movable connection between the float 21 and the moving block 14. Furthermore, the engagement of the moving block 14 with the guide rail 13 restricts the moving block 14 from separating from the guide rail 13 in the radial direction of the column 11, ensuring the reliability of the connection.

[0063] In some optional embodiments, the guide rail 13 is a T-shaped guide rail, and the moving block 14 is provided with a T-shaped groove that matches the shape of the T-shaped guide rail. With the above arrangement, it can be ensured that the moving block 14 drives the floating body 21 to move relative to the column 11 along the axial direction X, while effectively restricting the moving block 14 from separating from the guide rail 13 in the radial direction of the column 11.

[0064] In some alternative embodiments, one embodiment of this application provides a tension leg assembly 100, the drive component 30 including a drive member 31 and a traction member 32, the traction member 32 being connected to the float 21, the drive member 31 driving the traction member 32 to move or retract the traction member 32, so that the float 21 moves relative to the column 11 along the axial direction X.

[0065] The drive component 31 includes at least one of a drive motor, a telescopic cylinder, a winch, and a tensioning chain stopper.

[0066] The traction component 32 includes structures such as flexible cables and rigid rods.

[0067] When the driving member 31 comprises a winch, a tensioning stopper or the like structure, the traction member 32 can comprise a flexible cable, the traction member 32 can be directly or indirectly connected with the floating body 21, and the traction member 32 can be reeled in or out to realize the movement of the floating body 21 on the stand 11. Of course, when the traction member 32 comprises a rigid rod or the like structure, the driving member 31 can comprise a telescopic cylinder or the like structure, the traction member 32 is connected between the telescopic rod and the floating body 21, and the extension or shortening of the telescopic cylinder is controlled to drive the traction member 32 to move the floating body 21 relative to the guide rail 13, which can also satisfy the driving of the floating body 21 to move to a suitable position along the axial direction X relative to the stand 11.

[0068] The tension leg assembly 100 provided by one embodiment of the present application adopts the above structure of the driving assembly 30, which is beneficial to guarantee the driving requirement of the floating body 21. When the floating body 21 is installed, the traction member 32 can be driven by the driving member 31 to drive the floating body 21 to move downward along the stand 11 to be installed in place. When the floating body 21 needs to be disassembled after the tension leg assembly 100 is installed in place, the traction member 32 is released or moved by the driving member 31 to make the floating body 21 float up, so that the floating body 21 can be separated from the stand 11 by pulling the floating body 21 by an operating tool or a worker, and the floating body 21 can be disassembled. The operation is simple, and the construction difficulty and cost of the wind turbine foundation where the tension leg assembly 100 is located are reduced.

[0069] In some optional embodiments, the tension leg assembly 100 provided by one embodiment of the present application, the driving assembly 30 further comprises a guide wheel 40 arranged on one side of the stand 11 in the axial direction X, the driving member 31 is arranged on the side of the stand 11 away from the guide wheel 40, the traction member 32 comprises a flexible cable, the flexible cable is arranged around the guide wheel 40, one end of the flexible cable is connected with the floating body 21, and the other end of the flexible cable is connected with the driving member 31. The driving member 31 comprises one of a first tensioner and a winch and can reel in or out the flexible cable.

[0070] The guide wheel 40 is rotatably connected with the stand 11, and an ear seat can be arranged on the outer periphery of the stand 11, and the guide wheel 40 rotates in the ear seat.

[0071] The stand 11 can have opposite first and second end portions in the axial direction X thereof. When used for a wind turbine generator set, the first end portion is arranged to face the position where the nacelle 500 is located, and the second end portion can be located in the seawater and arranged away from the direction where the nacelle 500 is located. That is, when used for a wind turbine generator set, along the axial direction X, the first end portion can protrude out of the seawater, and the first end portion can be arranged closer to the nacelle 500 and the like components relative to the second end portion. The guide wheel 40 can be arranged at or close to the second end portion, and the driving member 31 can be arranged at or close to the first end portion.

[0072] The flexible cable can include a cable, a wire rope, etc.

[0073] The guide wheel 40 is used to realize the reversing function of the flexible cable in the axial direction X, so that both ends of the flexible cable in the length direction of the flexible cable are located on the same side of the guide wheel 40 in the axial direction X.

[0074] The flexible cable can be connected to the moving block 14 arranged on the floating body 21.

[0075] The tension leg assembly 100 provided by one embodiment of the present application is arranged as described above, so that one end of the flexible cable can be connected to the floating body 21, specifically, can be connected to the moving block 14 arranged on the floating body 21, the driving member 31 is connected to the other end of the flexible cable and can wind or pull the flexible cable to release or tighten the flexible cable, so as to meet the requirement of quick installation and disassembly of the floating body 21 on the stand 11. In addition, the arrangement of the guide wheel 40 and the arrangement mode of the driving member 31 make the driving member 31 exposed on the sea surface during construction, and the operator only needs to control the driving member 31 on the sea surface to tighten or release the flexible cable, so as to realize the installation or disassembly of the floating body 21 on the stand 11, reduce the construction difficulty and cost, improve the construction efficiency, and ensure the safety of the operator.

[0076] In some optional embodiments, the tension leg assembly 100 provided by one embodiment of the present application has a cavity in the stand 11, the first cable tube 15 is arranged in the cavity, and one end of the first cable tube 15 penetrates the top wall 111 of the stand 11 along the axial direction X, the flexible cable passes through the first cable tube 15 and is connected to the driving member 31.

[0077] The stand 11 can include the top wall 111, the bottom wall 112 and the side wall 113 arranged oppositely along the axial direction X, and the side wall 113 is connected between the top wall 111 and the bottom wall 112. The top wall 111, the bottom wall 112 and the side wall 113 form the cavity.

[0078] The number of the first cable tube 15 arranged in the cavity can be one, two or more, and can be determined according to the number of the guide rail 13 and the driving member 31. Optionally, the number of the first cable tube 15 can be equal to the number of the guide rail 13 and the driving member 31.

[0079] The first cable tube 15 can be a U-shaped tube arranged with one side closed in the axial direction X, and the U-shaped opening can be arranged and sealedly connected towards the side wall 113 of the stand 11. The first cable tube 15 can be fixedly connected to the stand 11 by welding or the like. The first cable tube 15 can be inserted into the two first clearance holes 114 and form a channel penetrating the stand 11 along the axial direction X, and the channel and the cavity of the stand 11 are arranged separately.

[0080] The tension leg assembly 100 provided by one embodiment of the present application, through the above arrangement, can protect the flexible cable by the first cable tube 15, and the arrangement of the first cable tube 15 is beneficial to the reversing of the flexible cable, the arrangement of the driving member 31 on the side away from the guide wheel 40 is beneficial to the offshore operation of the operator. Moreover, the arrangement of the first cable tube 15 makes the position of the flexible cable isolated from other areas in the cavity of the stand column 11, effectively avoiding the seawater entering the cavity of the stand column 11, and ensuring the floating requirement of the stand column 11 on the sea.

[0081] In some optional embodiments, the tension leg assembly 100 provided by one embodiment of the present application has a plurality of floating assemblies 20, and the plurality of floating assemblies 20 are distributed at intervals in the circumferential direction of the stand column 11, and each floating assembly 20 is provided with a driving assembly 30.

[0082] The number of the floating assemblies 20 can be two, three or more.

[0083] Each floating assembly 20 is provided with a driving assembly 30. Each floating assembly 20 includes two or more floating bodies 21, and the adjacent two floating bodies 21 of the same floating assembly 20 are connected by a connecting member 22. Each driving assembly 30 includes a driving member 31 and a traction member 32, the traction member 32 includes a flexible cable, and each driving assembly 30 includes a guide wheel 40. The cooperation mode of the corresponding floating assembly 20, driving assembly 30 and guide wheel 40 is the same as the above embodiment, which will not be repeated here.

[0084] The tension leg assembly 100 provided by one embodiment of the present application, through the above arrangement, can ensure that the buoyancy received by the stand column main body 10 is uniform, and ensure the stability of operation.

[0085] In some optional embodiments, the floating body 21 includes an air bag, the air bag has a cavity, and the air bag includes one of a rubber wall and a metal wall.

[0086] The outer shape of the air bag can be in a cylindrical shape, and the two ends in the axial direction X can be in a hemispherical shape. Of course, in some embodiments, the outer shape of the air bag can also be in a spherical shape or an ellipsoidal shape.

[0087] The tension leg assembly 100 provided by one embodiment of the present application, by making the floating body 21 include an air bag, can increase the buoyancy, which is beneficial to making the stand column main body 10 float on the sea surface, and ensuring the stability of the towing of the wind turbine foundation on which the tension leg assembly 100 is located on the sea surface during construction.

[0088] In some alternative embodiments, the tension leg assembly 100 provided by one embodiment of the present application is provided with a second cable tube 16 arranged in the column 11, one end of the second cable tube 16 penetrates the top wall 111 of the column 11 and the other end penetrates the bottom wall 112 of the column 11, the mooring connection part 12 comprises an adapter chain 122 and a second tensioner 121, the adapter chain 122 is arranged in the second cable tube 16, one end of the adapter chain 122 is connected with the second tensioner 121, and the other end of the adapter chain 122 is used for connecting with the mooring cable 300.

[0089] The second cable tube 16 can be in the shape of a circular tube, an elliptical tube or a polygonal tube.

[0090] Alternatively, the top wall 111 and the bottom wall 112 of the column 11 can be provided with second accommodation holes 115 matched with the shape of the second cable tube 16, the second cable tube 16 is inserted into the two second accommodation holes 115 and forms a channel penetrating the column 11 along the axial direction X, the channel and the cavity of the column 11 are arranged separately from each other.

[0091] The first tensioner and the second tensioner 121 can be hydraulic tensioners, which provide precise controllable tension through a hydraulic system to adjust the tension of the mooring cable. Of course, in some embodiments, a mechanical winch type tensioning device can also be used, the winch tightens the mooring cable by rotating, and the brake device can fix the position of the winch to keep the tension of the mooring cable stable.

[0092] The tension leg assembly 100 provided by one embodiment of the present application is provided with the above arrangement, which can protect the adapter chain 122 and the mooring cable 300 connected with the adapter chain 122 through the second cable tube 16. At the same time, the arrangement of the second cable tube 16 makes the positions of the second tensioner 121 and the adapter chain 122 isolated from other areas in the cavity of the column 11, effectively avoiding seawater entering the cavity of the column 11 and ensuring the floating requirement of the column 11 on the sea. In addition, the above arrangement can also ensure that the second tensioner 121 and the adapter chain 122 are located on the side of the column 11 protruding from the sea surface, which is convenient for the operator to realize the tensioning requirement of the adapter chain 122 and the mooring cable 300 through the second tensioner 121.

[0093] In some alternative embodiments, the tension leg assembly 100 provided by one embodiment of the present application is provided with the second cable tube 16 arranged coaxially with the column 11.

[0094] Through the above arrangement, after the mooring cable 300 is connected with the adapter chain 122, the force balance can be ensured when the mooring cable 300 is tensioned, thereby ensuring the stability of the wind turbine foundation formed by construction.

[0095] The wind turbine foundation provided by one embodiment of the present application can include the tension leg assembly 100 provided by each of the above embodiments, and the floating assembly 20 is connected with the vertical arm body 10 during the process of being towed by the wharf to the predetermined position, so as to ensure the stability and safety of the towing. After the wind turbine foundation is towed to the predetermined position, the mooring cable 300 can be connected on the mooring connecting part 12 of each tension leg assembly 100 and be tensioned, so as to ensure the stability, and meanwhile, each floating assembly 20 can be detached and separated from the vertical arm body 10.

[0096] The wind turbine foundation and the wind turbine generator provided by one embodiment of the present application have the advantages of low construction difficulty and low construction cost, because the tension leg assembly 100 provided by each of the above embodiments is included.

[0097] Although the present application has been described with reference to the preferred embodiments, various modifications can be made to the present application and equivalent components can be substituted without departing from the scope of the present application. In particular, the technical features mentioned in each of the embodiments can be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A tension leg assembly of a wind turbine foundation, characterized in that, The utility model relates to a kind of floating column, including: Vertical arm body (10), including column (11), mooring connection part (12) is arranged on the column (11), and the mooring connection part (12) is used to connect with mooring cable (300); Floating assembly (20) is arranged on the column (11), and the floating assembly (20) includes two or more than two floating bodies (21) distributed along the axial direction (X) of the column (11), each floating body (21) has the freedom of movement along the axial direction (X) relative to the column (11) and is detachably connected with the column (11); Drive assembly (30) is arranged on the column (11) and is connected with the floating assembly (20), and the drive assembly (30) drives the floating body (21) to move to predetermined position along the axial direction (X) relative to the column (11).

2. The tension leg platform assembly of claim 1, wherein, The floating assembly (20) further includes connecting piece (22), and the connecting piece (22) is detachably connected between adjacent two floating bodies (21) along the axial direction (X), and the drive assembly (30) drives each floating body (21) of the floating assembly (20) to move synchronously along the axial direction (X).

3. The tension leg platform assembly of claim 1, wherein, The column (11) is provided with guide rail (13) extending along the axial direction (X), and the floating body (21) is provided with moving block (14), and the moving block (14) is clamped on the guide rail (13) and has the freedom of movement along the axial direction (X) relative to the guide rail (13).

4. The tension leg platform assembly of claim 3, wherein, The drive assembly (30) includes driving member (31) and traction member (32), the traction member (32) is connected with the floating body (21), and the driving member (31) drives the traction member (32) to move or retract and release the traction member (32), so that the floating body (21) moves along the axial direction (X) relative to the column (11).

5. The tension leg platform assembly of claim 4, wherein, The drive assembly (30) further includes guide wheel (40) arranged on one side of the column (11) in the axial direction (X), the driving member (31) is arranged on the side of the column (11) away from the guide wheel (40), the traction member (32) includes flexible cable, the flexible cable is arranged around the guide wheel (40), one end of the flexible cable is connected with the floating body (21), and the other end of the flexible cable is connected with the driving member (31), and the driving member (31) includes one of first tensioner and winch and can retract and release the flexible cable.

6. The tension leg platform assembly of claim 5, wherein, The column (11) has a cavity, and the first cable tube (15) is arranged in the cavity, and one end of the first cable tube (15) penetrates the top wall (111) of the column (11) along the axial direction (X), and the flexible cable passes through the first cable tube (15) and is connected with the driving member (31).

7. The tension leg platform assembly of any one of claims 1 to 6, wherein, The number of the floating assembly (20) is multiple, and multiple floating assemblies (20) are distributed at intervals in the circumferential direction of the column (11), and each floating assembly (20) is correspondingly provided with the drive assembly (30).

8. The tension leg platform assembly of any one of claims 1 to 6, wherein, The floating body (21) comprises a gas bag having a cavity, the gas bag comprising one of a rubber wall and a metal wall.

9. The tension leg platform assembly of any one of claims 1 to 6, wherein, The second cable tube (16) is coaxially arranged with the column (11).

10. The tension leg platform assembly of claim 9, wherein, The tension leg assembly (100) comprises:

11. A fan foundation, characterized by a floating body (200); a plurality of the tension leg assemblies (100) are arranged around the floating body (200) and connected to the floating body (200) respectively; a mooring line (300), one end of the mooring line (300) being connected to the mooring connecting part (12), the other end of the mooring line (300) being fixed to the seabed. The fan foundation comprises the fan foundation according to claim 11.

12. A wind power unit, characterized in that ​

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