Floating fan device with double-tendon coordination mechanism

Abstract

The invention discloses a floating fan device with a double-tendon coordination mechanism. The double-tendon coordination mechanism in the floating fan device comprises a double-tendon connecting unit and two tendon coordination structures symmetrically arranged at the two ends of the double-tendon connecting unit. Each tendon coordination structure comprises a side baffle, a coordination component, a first connecting bolt, a first angle sensor, a second angle sensor, a second connecting bolt, a connecting component, a spring hydraulic damping unit, a single component force sensor, an adjusting angle wheel outer frame, an adjusting angle wheel and an adjusting motor; the double-tendon connecting mechanism with the self-adjusting function is introduced, and the synchronization capacity of the adjacent fairlead assemblies in the system and the stability of the TLP floating body platform are improved; translation energy of the cable is converted into multi-direction rotation energy so as to release fatigue load, the fatigue load of the cable is transmitted to a spring part in the spring hydraulic damping unit, the cable can be adjusted through sensing of a single component force sensor, and effective protection of the cable is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of floating offshore wind power equipment, and in particular relates to a floating wind turbine device with a double-tendon coordination mechanism. Background Art

[0002] A floating wind turbine foundation is a floating structure that floats on the sea surface. It is mainly used to place wind turbines for offshore power generation operations. It is the main load-bearing component of offshore wind power generation equipment. At present, offshore wind power development is concentrated in shallow offshore waters, and wind power generation foundations mainly use fixed structures such as monopiles or conductor frames. With the gradual reduction of land and offshore resources, the development of offshore wind power resources is gradually moving towards deep waters. As the water depth increases, the construction and installation costs of traditional fixed foundations will increase significantly. Therefore, floating foundations suitable for greater water depths will become the main foundation form for offshore wind power development in the future.

[0003] The existing floating wind power foundations mainly include tension leg type, semi-submersible type, column type and barge type. Each of the four structural forms has its advantages and disadvantages. Compared with the other forms, the tension leg type foundation usually has better economy and sea area applicability. The existing tension leg floating wind power foundation has the following problems: the traditional tension leg is generally connected by a single tendon component. When resisting the environmental load of wind, waves and currents, it faces the problem of asynchronous movement and force of adjacent cables at a single corner. The effect of connecting the traditional tension leg to the upper platform cannot achieve effective protection of the tension leg, and cannot effectively reduce the fatigue load of the traditional cable, thereby extending its service life. Summary of the invention

[0004] The present invention provides a floating wind turbine device with a double-tendon coordination mechanism, which introduces a double-tendon connection mechanism with a self-adjusting function and can improve the stability of a TLP floating platform.

[0005] To solve the above problems, the technical solution provided by the present invention is as follows:

[0006] An embodiment of the present invention provides a floating wind turbine device with a double-tendon coordination mechanism, comprising a wind turbine rotor assembly (1), a tower (2), a TLP floating platform (3), three groups of double-tendon coordination mechanisms (4) and three groups of cable guide assemblies (5); the wind turbine rotor assembly (1) is fixed to the top of the tower (2), the bottom of the tower (2) is fixed to the TLP floating platform (3), the TLP floating platform (3) is connected to the three groups of cable guide assemblies (5) via the three groups of double-tendon coordination mechanisms (4), and the three groups of cable guide assemblies (5) are anchored to the seabed.

[0007] In an optional embodiment of the present invention, each set of double-tendon coordination mechanisms (4) comprises a double-tendon connection unit (7) and two tendon coordination structures symmetrically arranged at two ends of the double-tendon connection unit (7).

[0008] In an optional embodiment of the present invention, each tendon coordination structure comprises a side baffle (6), a coordination component (8), a first connecting pin (9), a first angle sensor (10), a second angle sensor (11), a second connecting pin (12), a connecting component (13), a spring hydraulic damping unit (14), a single component force sensor (15), an adjusting angle wheel outer frame (16), an adjusting angle wheel (17) and an adjusting motor (18);

[0009] The top of the side baffle (6) is connected to the bottom of the TLP floating platform (3), and the bottom of the side baffle (6) is connected to the end of the double-tendon connection unit (7) through a first connection pin (9); the end of the double-tendon connection unit (7) is also provided with the first angle sensor (10); the top of the coordination component (8) is sleeved on the double-tendon connection unit (7), and the bottom of the coordination component (8) is connected to the connection component (13) through the second connection pin (12); a spring hydraulic damping unit (14) is provided in the cavity of the connection component (13), and the bottom of the connection component (13) is connected to the single-component force sensor (15), and the single-component force sensor (15) is arranged to abut against the spring hydraulic damping unit (14);

[0010] The single-component force sensor (15) is connected to an adjustable corner wheel outer frame (16), an adjustable corner wheel (17) is arranged inside the adjustable corner wheel outer frame (16), and an adjustable motor (18) is connected to the end of the adjustable corner wheel (17).

[0011] In an optional embodiment of the present invention, the double-tendon connection unit (7) is equipped with a built-in sensing control device.

[0012] In an optional embodiment of the present invention, the adjusting corner wheel outer frame (16) is connected to a single cable (5-1) of the cable guide assembly (5), and the cable (5-1) is an elastic body.

[0013] In an optional embodiment of the present invention, the first connecting pin (9) is a type I connecting pin, and the second connecting pin (12) is a type II connecting pin.

[0014] In an optional embodiment of the present invention, the TLP floating platform (3) is a triangular structure, and three groups of the double-tendon coordination mechanisms (4) are fixed at three corner positions of the TLP floating platform (3) by welding.

[0015] Compared with the prior art, the embodiment of the present invention provides a floating wind turbine device with a double-tendon coordination mechanism, which has the following beneficial effects:

[0016] (1) The present invention introduces a double tendon connection mechanism with a self-adjusting function, which can improve the synchronization ability of adjacent cable guide components in the system and improve the stability of the TLP floating platform. A double tendon connection unit with a built-in sensing control device is placed on the double tendon coordination mechanism, and the two tendon coordination structures coordinate the action to improve the synchronization ability of adjacent cables when resisting wind, wave and current environmental loads. A type of connecting pin is arranged on the upper part of the tendon connection unit, and two separate tendon coordination structures are combined into a double tendon coordination mechanism by additionally increasing the system's rotational freedom. At the same time, the average value of the tension of two adjacent cables within a certain period of time is obtained through a single-component force sensor and a sensing control device. When the tension value is greater than the adjacent tension error allowable value, an adjustment signal is issued, and the adjustment purpose is achieved by adjusting the angle wheel. This technology can overcome the shortcomings of the traditional single tendon connection mechanism and achieve the synchronization of the movement and force of adjacent cables. The present invention provides a design scheme for a double tendon coordination mechanism with a self-adjusting function, which provides a powerful reference for the design of tendon coordination mechanisms in tension leg type floating wind turbines.

[0017] (2) The present invention has developed an integrated component that couples a multi-connected pin unit, a spring hydraulic damping unit, and an angle sensing control unit. It not only converts the translational energy of the cable into multi-directional rotational energy and thus releases the fatigue load, but also transmits the fatigue load of the cable to the spring component in the spring hydraulic damping unit, and can adjust the cable through the perception of a single-component force sensor, thereby achieving effective protection of the cable.

[0018] By combining the use of Class I and Class II connecting pins, the translational energy of the cable is converted into rotational energy in multiple directions, thereby releasing the fatigue load caused by the wind, wave and current environmental loads on the cable. At the same time, due to the presence of the spring hydraulic damping unit, the offset, rotation and elongation response of the cable under the action of the environmental load can be partially transmitted to the spring hydraulic damping unit, greatly reducing the fatigue load of the cable. In addition, the rotation angle of the cable is obtained through the angle sensor and the sensing control device. When the angle value is greater than the allowable safety value, an adjustment signal is issued, and the adjustment purpose is achieved by adjusting the angle wheel. This technology can effectively reduce the fatigue load of the cable, extend its service life, and achieve effective protection of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments or 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 invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic structural diagram of a floating wind turbine device with a double-tendon coordination mechanism provided in an embodiment of the present application.

[0021] Figure 2 A schematic diagram of a double-tendon coordination mechanism of a floating wind turbine device with a double-tendon coordination mechanism provided in an embodiment of the present application. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0023] like Figure 1 As shown, a floating wind turbine device with a double tendon coordination mechanism provided by an embodiment of the present invention comprises a wind turbine rotor assembly 1, a tower 2, a TLP floating platform 3, three sets of double tendon coordination mechanisms 4 and three sets of cable guide assemblies 5; the wind turbine rotor assembly 1 is fixed to the top of the tower 2, the bottom of the tower 2 is fixed to the TLP floating platform 3, the TLP floating platform 3 is connected to the three sets of cable guide assemblies 5 through the three sets of double tendon coordination mechanisms 4, and the three sets of cable guide assemblies 5 are anchored to the seabed. Preferably, the TLP floating platform 3 is a triangular structure, and the three sets of double tendon coordination mechanisms 4 are fixed at the three corner positions of the TLP floating platform 3 by welding.

[0024] The wind turbine rotor assembly 1 of this embodiment includes a wind turbine rotor, a hub and a nacelle, and the double tendon coordination mechanism 4 has a self-adjusting function and a tendon protection function. There are 3 groups of double tendon coordination mechanisms 4, and each group of double tendon coordination mechanisms 4 has 2 tendon coordination structures, that is, a 3×2 arrangement is adopted, that is, there are two tendon structures at each of the three corners to provide sufficient rigidity to limit the movement of the TLP floating platform 3 under the action of the wind, wave and current ocean environment. The double tendon coordination mechanism 4 is connected to the bottom of the TLP floating platform 3 by welding, and a group of double tendon coordination mechanisms 4 is arranged at each of the 33 corners of the TLP floating platform.

[0025] like Figure 2 As shown, each group of double-tendon coordination mechanisms 4 includes a double-tendon connection unit 7 and two tendon coordination structures symmetrically arranged at both ends of the double-tendon connection unit 7. The double-tendon connection unit 7 is equipped with a sensing control device. Each tendon coordination structure includes a side baffle 6, a coordination member 8, a first connecting pin 9, a first angle sensor 10, a second angle sensor 11, a second connecting pin 12, a connecting member 13, a spring hydraulic damping unit 14, a single-component force sensor 15, an adjusting angle wheel outer frame 16, an adjusting angle wheel 17 and an adjusting motor 18.

[0026] The top of the side baffle 6 is connected to the bottom of the TLP floating platform 3, and the bottom of the side baffle 6 is connected to the end of the double tendon connection unit 7 through the first connection pin 9; the end of the double tendon connection unit 7 is also provided with a first angle sensor 10. The top of the coordination member 8 is sleeved on the double tendon connection unit 7, and the bottom of the coordination member 8 is connected to the connection member 13 through the second connection pin 12. A spring hydraulic damping unit 14 is arranged in the cavity of the connection member 13, and a single component force sensor 15 is connected to the bottom of the connection member 13, and the single component force sensor 15 is arranged in conflict with the spring hydraulic damping unit 14. The single component force sensor 15 is connected to the outer frame 16 of the adjusting angle wheel, and the outer frame 16 of the adjusting angle wheel is provided with an adjusting angle wheel 17, and the end of the adjusting angle wheel 17 is connected to an adjusting motor 18. The outer frame 16 of the adjusting angle wheel is connected to the single cable 5-1 of the cable guide assembly 5, and the cable 5-1 is an elastic body.

[0027] During the service period of the tension leg type floating wind turbine, wind loads will act on the wind turbine rotor, hub, nacelle, tower and TLP floating platform 3, and wave loads and current loads will act on the TLP floating platform 3, double tendon coordination mechanism 4 and cable guide assembly 5. Under the action of these loads, the tension leg type floating wind turbine will deviate. Since the upper part of the cable guide assembly 5 is connected to the TLP floating platform 3 through the double tendon coordination mechanism 4, the lower part is anchored to the seabed, and has a certain rigidity, the deviation of the overall floating wind turbine device can be limited, but the cable guide assembly 5 will also produce deviation, rotation and elongation response, forming fatigue load.

[0028] A double-tendon connection unit 7 with a built-in sensing control device is placed on the double-tendon coordination mechanism 4, and an additional rotational degree of freedom is added, so that the double-tendon coordination mechanism can basically realize the synchronous movement and force of the two cables 5-1. In addition, a single-component force sensor 15 is arranged on the upper part of each cable 5-1, which can capture the tension response time history data of the cable 5-1 per unit time, and the sensing control device on the double-tendon connection unit 7 senses it, and obtains the average value of the tension of two adjacent cables 5-1 within a certain period of time. When the tension value is greater than the adjacent tension error allowable value, an adjustment signal is issued, and the adjustment angle wheel 17 arranged on the upper part of the cable 5-1 controls the length of the cable 5-1 to achieve the purpose of tension adjustment.

[0029] The first connecting pin 9 is a type I connecting pin, and the second connecting pin 12 is a type II connecting pin. The double-tendon coordination mechanism 4 has both type I and type II connecting pins. Through the use of the connecting pins, the translational energy of the cable 5-1 can be converted into rotational energy in multiple directions, thereby releasing the fatigue load caused by the wind, wave and current environmental loads acting on the cable 5-1. At the same time, a spring hydraulic damping unit 14 is arranged on the double-tendon coordination mechanism 4, and the offset, rotation and elongation response of the cable 5-1 caused by the wave load and the current load can be transmitted to the spring hydraulic damping unit 14. In addition, the double-tendon coordination mechanism 4 is arranged with an angle sensor, which can capture the rotation angle time history data of the cable 5-1 per unit time, which is sensed by the sensing control device on the double-tendon connection unit 7. When the angle value is greater than the allowable safety value, an adjustment signal is issued, and the length of the cable 5-1 is controlled by the adjustment angle wheel 17 arranged on the upper part of the cable 5-1 to achieve the purpose of length adjustment and angle limitation, thereby realizing the protection function of the cable 5-1.

[0030] In summary, although the present invention has been disclosed as above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A floating wind turbine device with a double tendon coordination mechanism, characterized in that: It comprises a wind turbine rotor assembly (1), a tower (2), a TLP floating platform (3), three groups of double-tendon coordination mechanisms (4) and three groups of cable guide assemblies (5); the wind turbine rotor assembly (1) is fixed to the top of the tower (2), the bottom of the tower (2) is fixed to the TLP floating platform (3), the TLP floating platform (3) is connected to the three groups of cable guide assemblies (5) via the three groups of double-tendon coordination mechanisms (4), and the three groups of cable guide assemblies (5) are anchored to the seabed; Each set of double-tendon coordination mechanisms (4) comprises a double-tendon connection unit (7) and two tendon coordination structures symmetrically arranged at two ends of the double-tendon connection unit (7); Each tendon coordination structure comprises a side baffle (6), a coordination component (8), a first connecting pin (9), a first angle sensor (10), a second angle sensor (11), a second connecting pin (12), a connecting component (13), a spring hydraulic damping unit (14), a single-component force sensor (15), an adjusting angle wheel outer frame (16), an adjusting angle wheel (17), and an adjusting motor (18); The top of the side baffle (6) is connected to the bottom of the TLP floating platform (3), and the bottom of the side baffle (6) is connected to the end of the double-tendon connection unit (7) through a first connection pin (9); the end of the double-tendon connection unit (7) is also provided with the first angle sensor (10); the top of the coordination component (8) is sleeved on the double-tendon connection unit (7), and the bottom of the coordination component (8) is connected to the connection component (13) through the second connection pin (12); a spring hydraulic damping unit (14) is provided in the cavity of the connection component (13), and the bottom of the connection component (13) is connected to the single-component force sensor (15), and the single-component force sensor (15) is arranged to abut against the spring hydraulic damping unit (14); The single-component force sensor (15) is connected to an adjustable corner wheel outer frame (16), an adjustable corner wheel (17) is arranged inside the adjustable corner wheel outer frame (16), and an adjustable motor (18) is connected to the end of the adjustable corner wheel (17).

2. A floating wind turbine device with a double-tendon coordination mechanism according to claim 1, characterized in that: The double-tendon connection unit (7) is provided with a built-in sensing control device.

3. A floating wind turbine device with a double-tendon coordination mechanism according to claim 1, characterized in that: The adjusting corner wheel outer frame (16) is connected to a single cable (5-1) of the cable guide assembly (5), and the cable (5-1) is an elastic body.

4. A floating wind turbine device with a double-tendon coordination mechanism according to claim 1, characterized in that: The first connecting pin (9) is a type I connecting pin, and the second connecting pin (12) is a type II connecting pin.

5. A floating wind turbine device with a double-tendon coordination mechanism according to claim 1, characterized in that: The TLP floating platform (3) is a triangular structure, and the three groups of double-tendon coordination mechanisms (4) are fixed at three corner positions of the TLP floating platform (3) by welding.

Images