阅读说明：本技术 一种基于悬挂式减振装置的漂浮式风机平台 (Floating type fan platform based on suspension type vibration damper ) 是由 施伟 张雨 李昕 李东升 王文华 赵海盛 于 2021-08-12 设计创作，主要内容包括：本发明属于船舶与海洋工程领域,提供了一种基于悬挂式减振装置的漂浮式风机平台,该漂浮式风机平台包括风电机组、塔架结构、漂浮式平台及系泊系统；漂浮式平台主要由独立运动的浮筒、上双叉臂、下双叉臂、弹簧阻尼装置以及平台中心结构组成。本发明可增强漂浮式平台的运动性能,减小浮式风机在风和波浪作用下的运动响应；减小浮筒之间的相互影响,在波浪作用下可以减小漂浮式风机平台对塔架的冲击,湍流风作用下可以减小塔架的摇摆。本发明可以有效地减小漂浮式风机平台在波浪下的整体运动响应,降低塔架的摇摆幅度,使风机处于更加平稳的工作状态,从而提高风机的发电效率和安全性。(The invention belongs to the field of ship and ocean engineering, and provides a floating type fan platform based on a suspension type vibration damper, which comprises a wind turbine generator, a tower structure, a floating type platform and a mooring system; the floating platform mainly comprises a floating cylinder, an upper double-fork arm, a lower double-fork arm, a spring damping device and a platform central structure which move independently. The invention can enhance the motion performance of the floating platform and reduce the motion response of the floating fan under the action of wind and waves; reduce the interact between the flotation pontoon, can reduce the impact of floating fan platform to the pylon under the wave effect, can reduce the rocking of pylon under the torrent wind effect. The invention can effectively reduce the overall motion response of the floating type fan platform under waves, reduce the swing amplitude of the tower frame and enable the fan to be in a more stable working state, thereby improving the power generation efficiency and the safety of the fan.)

1. A floating type fan platform based on a suspension type vibration damper is characterized by comprising a wind turbine generator (1), a tower frame (2), a floating type platform and a mooring system (8); the floating platform comprises a spring damping device (3), an upper double-fork arm (4), a lower double-fork arm (5), a platform central structure (6) and a buoy (7); the platform central structure (6) is a triangular prism structure, and a base is arranged on the upper surface of the platform central structure; the tower (2) is fixed on the base; one end of the upper double-fork arm (4) is hinged to the upper end of the floating drum (7) together, the other end of the upper double-fork arm is hinged to two top points of the upper end of the platform central structure (6) respectively, and the two top points are close to the sides of the hinged floating drum (7); one end of the lower double fork arm (5) is hinged to the lower end of the floating cylinder (7) together, the other end of the lower double fork arm is hinged to two top points of the lower end of the platform central structure (6) respectively, and the two top points are close to the sides of the hinged floating cylinder (7); the upper double-fork arm (4) and the lower double-fork arm (5) swing up and down, so that the buoy (7) moves up and down, and the displacement and rotation of the buoy (7) in a horizontal plane are limited; the spring damping device (3) is positioned above the water surface; the tower (2) is hinged with the upper part of the buoy (7) through a spring damping device (3); the floating platform is anchored to the seabed by means of a mooring system (8).

2. A floating wind turbine platform based on suspended vibration dampers according to claim 1 characterized in that it comprises three and more pontoons (7) with independent movement between each pontoon (7).

Technical Field

The invention relates to the field of ship and ocean engineering, in particular to the development and utilization of ocean wind energy and the wave resistance of an ocean structure, and particularly relates to a floating type fan platform based on a suspension type vibration damper.

Background

Wind energy is renewable clean energy, the offshore wind energy reserves in China are huge, and the resources can be expected to be developed to reach 5 hundred million kilowatts at offshore wind power at the water depth of 5-50 m and the height of 70 m. However, as the water depth increases and the near-shore resource development tends to saturate, the disadvantage of the fixed foundation is obvious, and the floating foundation becomes the best choice. However, the development of the floating type fan faces many technical challenges, and the offshore floating type prototype test is carried out in Europe as early as more than ten years ago, so that the design experience is rich, and the large-batch production is still unavailable. The floating type fan is fixed on the seabed by a mooring system, the fan platform moves in a certain range under the action of wind and waves, however, the floating type projects in the east sea and the south sea of China are generally faced with shallow water depth, the ocean environment of the engineering sea area is severe, typhoons frequently occur and other adverse factors, the motion response of the platform is aggravated, and the working efficiency and the safety of the fan are seriously influenced. Therefore, researching how to reduce the motion response amplitude of the fan and the platform under the action of waves and wind is a key technology for designing and researching the floating type fan.

Disclosure of Invention

The invention aims to provide a floating type fan platform based on a suspension type vibration damper, which is suitable for middle water depth areas in the east sea and the south sea of China, can resist the interference of typhoon and reduce the motion response of a floating type fan under wind and wave.

The technical scheme of the invention is as follows: a floating type fan platform based on a suspension type vibration damper comprises a wind turbine generator set 1, a tower frame 2, a floating type platform and a mooring system 8; the floating platform comprises a spring damping device 3, an upper double-fork arm 4, a lower double-fork arm 5, a platform central structure 6 and a buoy 7; the platform central structure 6 is a triangular prism structure, and a base is arranged on the upper surface; the tower 2 is fixed on the base; one end of the upper double-fork arm 4 is hinged to the upper end of the floating cylinder 7, the other end of the upper double-fork arm is hinged to two top points of the upper end of the platform central structure 6 respectively, and the two top points are close to the sides of the hinged floating cylinder 7; one end of the lower double-fork arm 5 is hinged to the lower end of the floating cylinder 7 together, the other end of the lower double-fork arm is hinged to two top points of the lower end of the platform central structure 6 respectively, and the two top points are close to the sides of the hinged floating cylinder 7; the upper bifurcate arm 4 and the lower bifurcate arm 5 swing up and down, so that the buoy 7 moves up and down, and the displacement and rotation of the buoy 7 in a horizontal plane are limited; the spring damping device 3 is positioned above the water surface; the tower 2 is hinged with the upper part of the buoy 7 through a spring damping device 3; the floating platform is anchored to the seabed by a mooring system 8.

The floating type fan platform comprises three or more buoys 7, the connection mode of the three buoys is changed from the mode of forming an integral body by welding in the past into the mode of hinging to enable the three buoys to move independently, and the independent movement of each buoy can reduce the mutual influence between the buoys; each buoy 7 is connected with the tower 2 through a mechanism and a spring damping device 3, so that displacement transmission between the platform and the tower 2 is reduced, energy absorption and buffering are realized, the motion response of a fan is reduced, and the purpose of stabilizing is realized.

Considering the severe marine environment where the floating wind turbine is actually located, one end of the spring damping device 3 is moved upwards from the lower yoke position 5 to the upper yoke position 4, and then the other end connected with the tower 2 is also moved upwards, so that the contact between the spring damping device 3 and seawater is avoided, corrosion is reduced, and the connection point is lifted to increase the support of the tower 2.

The invention has the beneficial effects that: the invention provides a floating type fan platform based on a suspension type vibration damper, which is characterized in that the structure of the existing semi-submersible type platform is redesigned, so that each buoy can move independently, the mutual influence among the buoys is reduced, and the mobility of the platform is enhanced; secondly, adopt the double fork arm suspension structure to be connected between flotation pontoon and the platform central structure, owing to installed spring damping device additional between every flotation pontoon and pylon, therefore can realize power consumption, the effect of buffering, reduce the displacement transmission between every flotation pontoon and the pylon, improve the stability of fan. The floating type wind power generation device is simple in principle, ingenious in structural design and convenient to use, can effectively reduce the motion response of the floating type fan under the environmental load, improves the power generation efficiency and the safety, and can play an important role in the field of development and utilization of offshore wind energy.

Drawings

Fig. 1 is an overall three-dimensional view of a floating fan platform based on a suspended vibration damper according to the present invention.

In the figure: 1, a wind turbine generator; 2, a tower frame; 3, a spring damping device; 4, upper double-fork arms; 5, a lower double-fork arm; 6, a platform central structure; 7, a buoy; 8 mooring system

Detailed Description

In order to further understand the present invention, the following description is made with reference to the accompanying drawings and technical solutions.

Structural design description of the invention: a floating wind turbine platform based on a suspended vibration damping device, as shown in fig. 1, comprises a wind turbine generator 1, a tower 2, a floating platform and a mooring system 8. The floating platform comprises a spring damping device 3, an upper double-wishbone 4, a lower double-wishbone 5, a platform central structure 6 and a pontoon 7. The platform central structure 6 is a triangular prism structure, and a base is arranged on the upper surface; the tower 2 is fixed on the base, and the tower 2 and the platform central structure 6 form a whole; one end of the upper double-fork arm 4 is hinged to the upper end of the floating cylinder 7, the other end of the upper double-fork arm is hinged to two top points of the upper end of the platform central structure 6 respectively, and the two top points are close to the sides of the hinged floating cylinder 7; one end of the lower double-fork arm 5 is hinged to the lower end of the floating cylinder 7 together, the other end of the lower double-fork arm is hinged to two top points of the lower end of the platform central structure 6 respectively, and the two top points are close to the sides of the hinged floating cylinder 7; the upper bifurcate arm 4 and the lower bifurcate arm 5 swing up and down, so that the buoy 7 moves up and down, and the displacement and rotation of the buoy 7 in a horizontal plane are limited; the spring damping device 3 is positioned above the water surface; the tower 2 is hinged with the upper part of the buoy 7 through a spring damping device 3; the floating platform is anchored to the seabed by a mooring system 8

The working process of the invention is as follows: the working principle of the floating type fan platform based on the suspension type vibration damper is simple and clear, firstly, each buoy 7 of the platform can independently move up and down freely, the buoys have no mutual influence, and the displacement and the rotation angle of the buoy 7 in other directions are limited; when a wave passes through the platform, if one buoy is located at the wave crest and the other buoy is located at the wave trough, obvious inclination must occur to the existing integrated semi-submersible platform. In the platform provided by the invention, because each buoy 7 moves up and down independently, the inclination angle of the platform under the action of waves is reduced to the maximum extent; secondly, each buoy 7 is connected with the tower 2 through a spring damping device 3, which is a key part of the whole platform design, when the buoy 7 moves up and down in waves, the impact of the buoy 7 on the tower 2 is reduced due to the existence of the spring damper 3, the purposes of energy absorption and vibration reduction are achieved, and the swinging of the upper structure of the fan caused by the inclination of the platform is reduced; in addition, when non-constant thrust caused by a turbulent wind field acts on the wind turbine generator 1 and the tower 2, due to the existence of the spring damping device 3, the impact force of the tower 2 on the platform is partially absorbed, so that the platform inclination caused by the swinging of the upper structure of the fan is reduced.

In conclusion, the invention has the functions of obviously reducing the motion response of the offshore floating type fan under the action of wind and waves and improving the stability of the offshore floating type fan. The floating type platform is designed into a multi-rigid-body form and is connected by the spring dampers, so that the motion damping of the fan platform is increased, the motion performance of the platform is improved, the motion response of the floating type fan platform under waves is effectively reduced, the fan is in a more stable working state, and the working efficiency and the safety of the fan are improved. The invention is also applicable to other types of marine structures such as ocean platforms.