阅读说明：本技术 一种可伸缩浮式潮流能发电装置 (Scalable floating trend can power generation facility ) 是由 马婧 陈淑玲 邹蓓蕾 刘燕 胡天鸣 于 2019-11-07 设计创作，主要内容包括：本发明公开了一种可伸缩浮式潮流能发电装置,包括可伸缩浮式平台和四个水平轴潮流能发电装置；所述的可伸缩浮式平台包括中心浮体、四个圆柱形浮体、平台滑和伸缩杆,所述中心浮体通过平台滑和伸缩杆与四个圆柱形浮体相连接；所述浮体下方均设有外筒,外筒内设有支撑轴,支撑轴下方固定连接水平轴潮流能发电装置；所述水平轴潮流能发电装置包括叶片、轮毂和发电机,所述叶片经过轮毂与发电机连接,所述轮毂与发电机通过主轴直接连接。本发明的浮式平台设计为横向纵向均可伸缩,可实现多展度,多深度捕获潮流能,降低潮流能发电系统的制作、安装及维修成本。(The invention discloses a telescopic floating tidal current energy power generation device, which comprises a telescopic floating platform and four horizontal shaft tidal current energy power generation devices; the telescopic floating platform comprises a central floating body, four cylindrical floating bodies, a platform slide and a telescopic rod, wherein the central floating body is connected with the four cylindrical floating bodies through the platform slide and the telescopic rod; an outer cylinder is arranged below each floating body, a support shaft is arranged in each outer cylinder, and a horizontal shaft tidal current energy power generation device is fixedly connected below each support shaft; the horizontal shaft tidal current energy power generation device comprises blades, a hub and a generator, wherein the blades are connected with the generator through the hub, and the hub is directly connected with the generator through a main shaft. The floating platform disclosed by the invention is designed to be transversely and longitudinally telescopic, can capture tidal current energy at multiple spread degrees and multiple depths, and reduces the manufacturing, installation and maintenance costs of a tidal current energy power generation system.)

1. A scalable floating tidal current energy power generation device is characterized by comprising a scalable floating platform and four horizontal axis tidal current energy power generation devices;

the telescopic floating platform comprises a central floating body (100), four cylindrical floating bodies (110), a platform slide (120) and telescopic rods (130), wherein the central floating body (100) is connected with the four cylindrical floating bodies (110) through the platform slide (120) and the telescopic rods (130); an outer cylinder (140) is arranged below the floating body (110), a support shaft (150) is arranged in the outer cylinder (140), and a horizontal shaft tidal current energy power generation device is fixedly connected below the support shaft (150);

the horizontal-axis tidal current energy power generation device comprises blades (210), a hub (220) and a generator (230), wherein the blades (210) are connected with the generator (230) through the hub (220), and the hub (220) is directly connected with the generator (230) through a main shaft.

2. The scalable floating tidal current energy power generation device according to claim 1, wherein scalable reinforcing rods (160) are arranged between the four outer cylinders (140), and the scalable reinforcing rods (160) are connected below the central floating body (100).

3. The scalable floating tidal current energy power generation device according to claim 1, wherein a sliding groove is provided in the outer cylinder (140), and the support shaft (150) moves up and down through the sliding groove.

4. The retractable floating tidal current energy power generation device of claim 1, wherein a rotating shaft is arranged in the supporting shaft (150) to enable the horizontal shaft tidal current energy power generation device to realize self-convection under the action of water flow in any direction.

5. The scalable floating tidal current energy power generation device according to claim 1, wherein the blades (210) are in the form of variable chord length and variable pitch angle, and the cross-sectional airfoils of the blades (210) at all positions except the root in the spanwise direction are S809 airfoils.

6. The scalable floating tidal current energy power generation device of claim 1, wherein the floating body (110) is provided with an enclosure (190).

7. The scalable floating tidal current energy power generation device according to claim 1, wherein the floating bodies (110) are provided with channels (170) and stairs (180), the stairs (180) are communicated to the inside of each floating body (110), the channels (170) are communicated to the inside of the telescopic rods (130), and the telescopic rods (130) are communicated to the central floating body (100) and each cylindrical floating body (110).

Technical Field

The invention relates to tidal current energy power generation technology, in particular to a telescopic floating type tidal current energy power generation device.

Background

The energy is a material resource for providing various abilities and powers for the production and life of human beings, and is an important material basis of national economy. With the rapid development of economy and the continuous acceleration of industrialization, the global demand for energy is rapidly increasing. With the excessive consumption of fossil fuels such as petroleum and coal, scientists in all countries around the world are striving to find alternative clean, renewable new energy sources.

Ocean energy is one of green energy sources, and becomes an object of disputed research and development of countries in the world due to the advantages of good reproducibility, strong predictability, cleanness, environmental protection, abundant reserves and the like. Tidal current energy is one of ocean energies, referring to kinetic energy of seawater flow, mainly to relatively steady flow in ocean bottom waterways and straits and regular seawater flow due to tides. Compared with waves, the change of tidal current energy is more stable and regular, forecast can be performed in advance, and the total reserve is rich.

The tidal current energy power generation system generates power by utilizing the flow of seawater in the horizontal direction, and the current research direction mainly comprises a horizontal shaft water turbine and a vertical shaft water turbine. Compared with a vertical axis water turbine, the horizontal axis water turbine has the advantages that under the action of water flow, when tide reaches a certain flow rate, the impeller can be automatically started, and the starting flow rate is low. When the impeller runs, the control strategy of the blade generally adopts a fixed pitch or variable pitch mode, and the variable pitch blade can achieve the purposes of obtaining energy maximization and adapting to the reciprocity of tidal current at different flow speeds.

At present, no tidal current energy conversion system in a certain form has obvious technical advantages and is widely accepted, and most power generation systems are low in efficiency, narrow in application range and poor in popularization.

Disclosure of Invention

The purpose of the invention is as follows: aiming at the problems, the invention provides a telescopic floating tidal current energy power generation device, wherein a floating platform of the telescopic floating tidal current energy power generation device is designed to be telescopic transversely and longitudinally, and can capture tidal current energy at multiple expansion degrees and multiple depths.

The technical scheme is as follows: in order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows: a telescopic floating tidal current energy power generation device comprises a telescopic floating platform and four horizontal shaft tidal current energy power generation devices; the telescopic floating platform comprises a central floating body, four cylindrical floating bodies, a platform slide and a telescopic rod, wherein the central floating body is connected with the four cylindrical floating bodies through the platform slide and the telescopic rod; an outer cylinder is arranged below each floating body, a support shaft is arranged in each outer cylinder, and a horizontal shaft tidal current energy power generation device is fixedly connected below each support shaft; the horizontal shaft tidal current energy power generation device comprises blades, a hub and a generator, wherein the blades are connected with the generator through the hub, and the hub is directly connected with the generator through a main shaft.

Furthermore, all be equipped with scalable stiffener between four urceolus, scalable stiffener is connected in central body below.

Furthermore, a sliding groove is formed in the outer barrel, and the supporting shaft moves up and down through the sliding groove.

Furthermore, a rotating shaft is arranged in the supporting shaft, so that the horizontal shaft tidal current energy power generation device can realize self-convection under the action of water flow in any direction.

Furthermore, the blade adopts the form of variable chord length and variable pitch angle, and the section airfoils of the blade at each position except the root in the abduction direction are S809 airfoils.

Furthermore, a fence is arranged on the floating body.

Furthermore, a passage and a stair are arranged on the floating bodies, the stair lead to the insides of the floating bodies, the passage leads to the insides of the telescopic rods, and the passage leads to the central floating body and the cylindrical floating bodies through the telescopic rods.

Has the advantages that: the floating platform disclosed by the invention is designed to be transversely and longitudinally telescopic, can capture tidal current energy at multiple spread degrees and multiple depths, and reduces the manufacturing, installation and maintenance costs of a tidal current energy power generation system. The variable chord length and variable pitch angle type blade can reduce the starting flow velocity of the water turbine, is beneficial to improving the efficiency of the water turbine, and can be adjusted according to different incoming flow directions to reduce the starting flow velocity, so that tidal current energy resources are more fully utilized. The invention improves the efficiency and the economy of the whole power generation system and is easy to popularize and apply.

Drawings

Fig. 1 is a schematic structural diagram of the telescopic floating tidal current energy power generation device of the invention;

fig. 2 is a front view of the retractable floating tidal current energy power generation device of the present invention;

FIG. 3 is a schematic structural diagram of a horizontal-axis tidal current energy power generation device according to the present invention;

fig. 4 is an enlarged view of a portion of the telescopic vessel of the present invention.

Detailed Description

The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.

As shown in fig. 1, the structure of the retractable floating tidal current energy power generation device is schematically shown, as shown in fig. 2, the front view of the retractable floating tidal current energy power generation device is fixed on the seabed through cables, and the retractable floating tidal current energy power generation device comprises a retractable floating platform and four horizontal axis tidal current energy power generation devices.

The telescopic floating type tidal current energy power generation system is in actual operation, the platform slide 120 can drive the telescopic rod 130 to transversely extend, and therefore interference of flow fields among the horizontal shaft tidal current energy power generation devices is reduced.

The outer cylinders 140 are respectively arranged below the cylindrical floating bodies 110, the support shafts 150 are arranged in the outer cylinders 140 of the four cylindrical floating bodies 110, and the horizontal shaft tidal current energy power generation device is fixedly connected through the outer cylinders 140 and the support shafts 150. The support shaft 150 can move up and down through the sliding groove in the outer cylinder 140, so that the depth is changed, and the tidal current energy can be captured more efficiently. Meanwhile, in order to make the telescopic floating tidal current energy power generation system more stable, telescopic reinforcing rods 160 are arranged among the four outer cylinders 140.

The horizontal axis tidal current energy power generation device comprises blades 210, a hub 220 and a generator 230, wherein the blades 210 of the horizontal axis tidal current energy power generation device are connected with the generator 230 through the hub 220, and the hub 220 of the horizontal axis tidal current energy power generation device is directly connected with the generator 230 through a main shaft. In addition, when the sea current flows to the blade 210 in any direction, a torque is generated around the rotation axis in the support shaft 150, and the blade 210 finally performs self-convection under continuous impact.

As shown in fig. 3, the structural schematic diagram of the horizontal axis tidal current energy power generation device of the present invention is that the blades 210 of the horizontal axis tidal current energy power generation device adopt a variable chord length and variable pitch angle form, and except for the root of the blade 210, the cross-sectional airfoils at each spanwise position are S809 airfoils with good aerodynamic characteristics, so that the starting flow rate of the water turbine is reduced.

As shown in fig. 4, in the enlarged view of the cylindrical floats 110 of the telescopic floating platform of the present invention, a fence 190 is provided on each cylindrical float 110, and a passage 170 and a staircase 180 are provided on each platform float. The cylindrical floating bodies 110 are provided with channels 170 and stairs 180, the stairs 180 and the channels 170 can be communicated with the cylindrical floating bodies 110 and the central floating body 100 through the telescopic rods 130, the channels 170 can be used for communication operation of workers on a platform, and the stairs 180 can be communicated with workshops in the cylindrical floating bodies 110, so that the maintenance and the detection are convenient.