Floating type wind driven generator

Abstract

The utility model provides a floating type wind driven generator, which comprises a fan tower, a floating type foundation platform and a stabilizing device, the stabilizing device comprises at least two wind winding devices, each wind winding device comprises a cable rope and a winch, the winches are arranged on the floating type wind driven generator, the first ends of the cable ropes are connected with the winches, and the second ends of the cable ropes are connected with the winches. The winches can contract and release a cable rope, the second end of the cable rope is used for being connected with a hoisted object, any two winches and the hoisted object are not located on the same straight line, and the distance between the winches and the axis of the fan tower is larger than 0. By arranging the stabilizing device, the stabilizing device and the lifting rope can keep the lifted object to move stably, so that the situation that the lifted object collides with the unit due to the fact that the movement deviation of the lifted object is too large, and the lifted object or the unit is damaged is avoided.

Description

Technical Field

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

[0002] Current floating wind turbines generally include a wind turbine foundation and a wind turbine tower. The wind turbine foundation includes multiple buoys and multiple cross braces connecting the buoys. The wind turbine foundation is set on the sea surface as an integral structure. The wind turbine tower includes a fixed support, a wind turbine nacelle and wind rotor blades. The wind turbine tower is set on the wind turbine foundation through the fixed support, and the wind rotor blades are set on the top of the fixed support through the wind turbine nacelle. The wind rotor blades rotate under the action of wind force, thereby converting kinetic energy into electrical energy.

[0003] During routine maintenance or major component replacement of the unit, there is usually a need to hoist maintenance tools or unit components. In the prior art, the hoisted object is usually hoisted by the hoisting rope of the maintenance crane. Since the unit of the floating wind turbine floats and shakes on the water, during hoisting, the hoisted object may shake greatly and produce excessive position deviation, which may cause interference and collision, resulting in damage to the hoisted object or unit components. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a floating wind generator in order to overcome the defect in the prior art that the floating wind generator is hit by the hoisted objects when hoisting the objects.

[0005] The utility model solves the above technical problems through the following technical solutions: a floating wind turbine, comprising a wind turbine tower and a floating foundation platform, the floating wind turbine also comprising a stabilizing device, the stabilizing device comprising at least two wind-catching hoisting devices, the wind-catching hoisting devices comprising a cable wind rope and a hoist, the hoist being arranged on the floating foundation platform, the first end of the cable wind rope being connected to the hoist, the hoist being able to retract and release the cable wind rope, the second end of the cable wind rope being used to be connected to a suspended object, any two of the hoists and the suspended objects are not in the same straight line, and the distance from the hoist to the axis of the wind turbine tower is greater than 0.

[0006] By setting up a stabilizing device, the stabilizing device has at least two wind-catching hoisting devices. The wind ropes of the wind-catching hoisting devices are connected to the suspended object. As the suspended object rises or falls, the tension, rope length, etc. of the wind ropes are controlled by the winch. The wind ropes and the hoisting ropes can maintain relatively stable movement of the suspended object, ensure that the swing amplitude of the suspended object and the unit are controlled to be consistent, and avoid the suspended object colliding with the unit due to excessive deviation in relative position with the unit, resulting in damage to the suspended object or the unit.

[0007] Preferably, the winch can be arranged at different positions of the floating foundation platform, so that the distance from the winch to the axis of the wind turbine tower can be adjusted.

[0008] By setting the winch at different positions on the floating foundation platform, the distance from the winch to the axis of the wind turbine tower can be adjusted, so that objects of different sizes and weights can be stably adapted. Maintenance personnel can set the winch at different positions on the floating foundation platform according to the different objects.

[0009] Preferably, the number of the wind-catching hoisting devices is two.

[0010] Compared with setting up multiple wind-catching winches, setting up two wind-catching winches has a simpler structure and lower cost.

[0011] Preferably, when the suspended object is located at the top end of the suspension rope, the suspended object and the two hoists form an isosceles triangle, and the distance between the suspended object and each hoist is equal; or, the distance between the suspended object and the two hoists is unequal.

[0012] By arranging the suspended object and the hoisting machine to form an isosceles triangle and the distance between the suspended object and each hoisting machine is equal, the hoisting machine can better keep the suspended object stably rising.

[0013] Preferably, the number of the wind-catching hoisting devices is three.

[0014] Preferably, when the suspended object is located at the top end of the suspension rope, the suspended object and the three hoists form a regular triangular pyramid, and the distance between the suspended object and each hoist is equal; or, the distance between the suspended object and the three hoists is not equal.

[0015] The hoisting machine and the suspended object are arranged to form a regular triangular pyramid, and the distance between the suspended object and each hoisting machine is equal, so that the hoisting machine can better keep the suspended object stably rising.

[0016] Preferably, the floating wind turbine comprises a plurality of cross braces, and the two winches are respectively arranged on two of the cross braces.

[0017] By arranging two winches on two cross braces respectively, it is avoided that the tension of the guy rope is concentrated on one cross brace.

[0018] Preferably, the floating wind turbine comprises a cross brace, and the winch is arranged on the cross brace.

[0019] Preferably, the floating wind turbine further includes a slide rail, and the winch is connected to the floating base platform via the slide rail, and the slide rail has a plurality of connection points for fixing the winch, and the winch can slide on the slide rail to any connection point so that the winch can be set at different positions on the floating base platform.

[0020] By arranging a slide rail on the floating wind turbine, the winch can slide on the slide rail to change its setting position, thereby providing a way to change the position of the winch.

[0021] Preferably, the guy rope is a nylon rope or a steel wire rope.

[0022] Preferably, the guy rope and the suspended object are connected via a lifting clasp.

[0023] The positive progressive effect of the utility model is that by setting a stabilizing device, the stabilizing device and the lifting rope can maintain the relatively stable movement of the suspended object, thereby preventing the suspended object from colliding with the unit due to excessive movement deviation and causing damage to the suspended object or the unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The figure is a schematic diagram of the three-dimensional structure of a floating wind turbine according to an embodiment of the present invention.

[0025] Description of reference numerals:

[0026] Rope 1

[0027] Suspended object 2

[0028] Horizontal support 3

[0029] Float 4

[0030] Cabin 5

[0031] Wind turbine tower 6

[0032] Wind winch equipment7

[0033] Winch 71

[0034] Cable rope 72 DETAILED DESCRIPTION

[0035] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0036] like Figure 1As shown, this embodiment provides a floating wind turbine, which includes a wind turbine tower 6, a floating foundation platform and a stabilizing device. The stabilizing device includes two wind-catching hoisting devices 7. The wind-catching hoisting devices 7 include a cable wind rope 72 and a hoist 71. The hoist 71 is arranged on the floating wind turbine. The first end of the cable wind rope 72 is connected to the hoist 71. The hoist 71 can retract and release the cable wind rope 72. The second end of the cable wind rope 72 is used to connect with a suspended object 2. The two hoists 71 and the suspended object 2 are not in the same straight line, and the distance from the hoist to the axis of the wind turbine tower 6 is greater than 0. By setting up a stabilizing device, the stabilizing device has two wind-catching hoisting devices 7, and the two hoists 71 and the suspended object 2 are not in the same straight line. The wind rope 72 of the wind-catching hoisting device 7 is connected to the suspended object 2. As the suspended object 2 rises or falls, the tension, rope length, etc. of the wind rope 72 are controlled by the hoist 71. The wind rope and the hoisting rope 1 can maintain relatively stable movement of the suspended object 2, ensure that the swing amplitude of the suspended object 2 is controlled to be consistent with that of the unit, and avoid the suspended object 2 colliding with the unit due to excessive deviation in relative position with the unit, resulting in damage to the suspended object 2 or the unit.

[0037] Specifically, when inspecting and repairing a floating wind turbine, a maintenance crane will be set in the cabin 5 at the top of the wind turbine tower 6, and the lifting rope 1 of the maintenance crane will extend from the top of the wind turbine tower 6. Therefore, the distance from the winch to the axis of the wind turbine tower 6 is set to be greater than 0, that is, there is a certain distance between the winch 71 and the axis of the wind turbine tower 6, and the axis of the wind turbine tower 6 is not in the plane formed by the hoisted object 2 and any two winches 71. During the hoisting process, the hoisted object 2 always maintains a certain distance from the wind turbine tower 6, and is not easy to collide with the wind turbine tower 6. During the process of hoisting the suspended object 2 by the lifting rope 1, the winch 71 is connected to the suspended object 2 through the cable wind rope 72, and the cable wind rope 72 is always in a tensioned state. The winch 71 can change the tension and rope length of the cable wind rope 72 to make the cable wind rope 72 have different pre-tensioning forces. This pre-tensioning force can ensure that the swing amplitude of the suspended object 2 is within an acceptable range, that is, to ensure that the suspended object 2 does not hit the unit and maintains a stable rise. The control method of the winch 71 and the calculation method of the size and direction of the pre-tensioning force required for the cable wind rope 72 under different environmental factors are existing technologies and will not be repeated here.

[0038] Compared with setting up a plurality of wind-catching hoisting devices 7, setting up two wind-catching hoisting devices 7 has a simpler structure and lower cost for the stabilizing device.

[0039] In this embodiment, the winch 71 can be arranged at different positions of the floating foundation platform so that the distance from the winch to the axis of the wind turbine tower 6 can be adjusted. Depending on the size and weight of the suspended object 2, the required distance between the winch 71 and the axis of the wind turbine tower 6 is also different. When the suspended object 2 is large in volume and heavy in weight, it is necessary to increase the distance between the winch 71 and the axis of the wind turbine tower 6 to avoid collision between the suspended object 2 and the wind turbine tower 6. Of course, during the process of hoisting a suspended object 2, the position of the winch 71 remains unchanged.

[0040] Specifically in this embodiment, the winch 71 is connected to the floating foundation platform through a slide rail (not shown in the figure) and the distance to the axis of the wind turbine tower 6 is changed by sliding. Specifically, the winch 71 is connected to the floating foundation platform through a slide rail, each slide rail has a plurality of connection points for fixing the winch 71, and the winch slides on the slide rail and is connected to different connection points, so that the distance from the winch 71 to the axis of the wind turbine tower 6 is different, and the distance from the winch 71 to the axis of the wind turbine tower 6 is adjustable.

[0041] Of course, in other embodiments, the setting position of the winch 71 can also be changed by other means, so as to achieve the adjustable distance from the winch 71 to the axis of the wind turbine tower 6. For example, the winch 71 and the floating foundation platform are set to be detachably connected, and the winch 71 is hoisted to the required position by a lifting rope and then the winch 71 and the floating foundation platform are connected, or the winch 71 is manually transported to the required position and then the winch 71 and the floating foundation platform are connected, etc., which will not be repeated here.

[0042] In this embodiment, when the suspended object 2 is located at the top of the suspension rope 1, the suspended object 2 and the two hoists 71 form an isosceles triangle, and the distance between the suspended object 2 and each hoist 71 is equal. In the process of the suspended object 2 rising, although the suspended object 2 will sway slightly, the position of the hoist 71 is set so that when the suspended object 2 is located at the top of the suspension rope 1, the suspended object 2 and the two hoists 71 form an isosceles triangle, and the distance between the suspended object 2 and each hoist 71 is equal. In the process of the suspended object 2 rising or falling, when the suspended object 2 sways slightly, the distance between the suspended object 2 and each hoist 71 can be kept approximately equal, and the magnitude of the force applied to each hoist 71 and the corresponding wind rope 72 is not much different, so that the hoist 71 can better keep the suspended object 2 rising stably, and avoid the situation where one hoist 71 is subjected to a very large force while the other hoist 71 is subjected to a small force.

[0043] Similarly, in other embodiments, the number of wind-catching hoisting devices 7 of the stabilizing device may also be three. When the number of wind-catching hoisting devices 7 is three, when the suspended object 2 is located at the top of the suspension rope 1, the suspended object 2 and the three hoists 71 form a regular triangular pyramid, and the distance between the suspended object 2 and each hoist 71 is equal, so that the hoist 71 can better keep the suspended object 2 stably rising. Of course, in more embodiments, the number of hoists 71 may also be four or more, or the distances between different hoists 71 and the suspended object 2 may also be unequal. For example, in other embodiments, when there are only two hoists, the distances between the two hoists and the suspended object are unequal, or, when there are three hoists, the distances between the three hoists and the suspended object are all unequal. Of course, two of the three hoists may also be at an equal distance from the suspended object, and the distance between the third hoist and the suspended object may be unequal. When there are four or more winches, the distances between the hoisted object and different winches can also be adjusted according to actual needs. It should be noted that when the distances between different winches and the hoisted object are different, the stress conditions of different winches 71 and corresponding wind ropes 72 may be different. Specifically, it is necessary to select a suitable winch 71 model and wind rope 72 type according to the actual stress conditions, which will not be described in detail here.

[0044] In this embodiment, the floating wind turbine includes a plurality of cross braces 3, and two winches 71 are respectively arranged on the two cross braces 3 through slide rails. By respectively arranging the two winches 71 on the two cross braces 3, the tension of the wind rope 72 is prevented from being concentrated on one cross brace 3.

[0045] Of course, in other embodiments, two or more winches 71 may also be arranged on the same or one or more cross braces 3, or in more embodiments, the winch 71 may also be arranged on the buoy 4 or other structural components on the floating wind turbine. The specific arrangement of the winch 71 may be adjusted according to the actual structure of different floating wind turbines, which will not be repeated here.

[0046] In this embodiment, the suspension rope 1 is arranged on the top of the wind turbine tower 6 of the floating wind turbine. The projection of the part of the cable wind rope 72 connecting the suspended object 2 and the winch 71 in the vertical direction is not on the straight line where the two winches 71 are located. In other words, the tension of the cable wind rope 72 on the suspended object 2 has effects in three mutually perpendicular directions, so that no matter in which direction the suspended object 2 shakes, the winch 71 and the cable wind rope 72 can maintain the stable movement of the suspended object 2 by adjusting the tension.

[0047] Specifically in this embodiment, the suspension rope 1 is a part of a maintenance crane of a floating wind turbine generator, and is a standard component of a conventional floating wind turbine generator, and its top end is arranged at the tail of the nacelle 5 .

[0048] Of course, in other embodiments, the top end of the sling 1 can also be set at any position of the cabin 5, not limited to being set at the tail of the cabin 5, because the unit in the prior art has the yaw capability, that is, when the sling 1 is set at any position of the cabin 5, the sling 1 can be opposite to the front of the winch 71.

[0049] Specifically in this embodiment, when the suspended object 2 needs to be lifted from bottom to top, it is only necessary to directly connect the cable wind rope 72 to the suspended object 2 at the bottom of the tower base of the floating wind turbine. However, when the suspended object 2 needs to be lifted from top to bottom, it is necessary to first use the lifting rope 1 to pull the cable wind rope 72 into the cabin 5 and connect it to the suspended object 2.

[0050] In this embodiment, an electric control system is provided on the cabin 5, and the electric control system can control the raising and lowering of the hoist rope 1. The electric control system can select control equipment in the prior art, such as an electric hoist or a lifting mechanism of a lifting equipment.

[0051] In this embodiment, the lifting rope 1 is a steel chain or a steel wire rope, and the cable wind rope is a nylon rope or a steel wire rope. The lifting rope 1 and the suspended object 2 as well as the cable wind rope 72 and the suspended object 2 are connected through lifting clamps.

[0052] In other embodiments, the lifting rope 1 and the guy rope 72 may also be other ropes in the prior art that can meet the lifting requirements. The lifting rope 1 and the suspended object 2 as well as the guy rope 72 and the suspended object 2 may also be connected by other connecting parts in the prior art, such as shackles, etc., which will not be repeated here.

[0053] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A floating wind turbine generator, comprising a wind turbine tower and a floating foundation platform, characterized in that: The floating wind turbine also includes a stabilizing device, which includes at least two wind-catching hoisting devices. The wind-catching hoisting devices include a wind rope and a hoist. The hoist is arranged on the floating base platform. The first end of the wind rope is connected to the hoist. The hoist can retract and release the wind rope. The second end of the wind rope is used to connect to a suspended object. Any two of the hoists and the suspended object are not in the same straight line, and the distance from the hoist to the axis of the wind turbine tower is greater than 0.

2. The floating wind turbine according to claim 1, characterized in that: The winch can be arranged at different positions of the floating foundation platform so that the distance from the winch to the axis of the wind turbine tower can be adjusted.

3. The floating wind turbine according to claim 2, characterized in that: The number of the wind-catching winch devices is two.

4. The floating wind turbine according to claim 3, characterized in that: When the suspended object is located at the top of the suspension rope, the suspended object and the two hoists form an isosceles triangle, and the distance between the suspended object and the two hoists is equal; Alternatively, the distances between the suspended object and the two hoists are not equal.

5. The floating wind turbine according to claim 3, characterized in that: The floating wind turbine comprises a plurality of cross braces, and the two hoists are respectively arranged on the two cross braces.

6. The floating wind turbine according to claim 2, characterized in that: The number of the wind-catching winch devices is three.

7. The floating wind turbine according to claim 6, characterized in that: When the suspended object is located at the top of the suspension rope, the suspended object and the three hoists form a regular triangular pyramid, and the distance between the suspended object and each hoist is equal; Alternatively, the distances between the suspended object and the three hoists are not equal.

8. The floating wind turbine according to claim 1, characterized in that: The floating wind turbine comprises a cross brace, and the winch is arranged on the cross brace.

9. The floating wind turbine according to any one of claims 2 to 8, characterized in that: The floating wind turbine also includes a slide rail, and the winch is connected to the floating base platform via the slide rail. The slide rail has a plurality of connection points for fixing the winch. The winch can slide on the slide rail to any connection point so that the winch is set at different positions of the floating base platform.

10. The floating wind turbine according to claim 1, characterized in that: The guy rope is a nylon rope or a steel wire rope; And / or, the guy rope and the suspended object are connected via a lifting clasp.

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