Blade of high-power horizontal shaft ocean current energy electric generator and manufacturing method thereof

A horizontal axis, ocean current energy technology, used in hydroelectric power generation, machine/engine, final product manufacturing, etc., can solve problems such as blade corrosion damage, cavitation, and entanglement of suspended fishing nets

Active Publication Date: 2015-08-12
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The surface hardness of traditional wind turbine composite material blades is low. During the operation of the blades, they are easily dented or scratched by the impact and friction of sand and gravel.
In addition, the blade tip rotates fast in the underwater environment, which is prone to cavitation, resulting in more damage to the blade tip
[0007] In addition, in the ocean operating environment, it is necessary to face the problem of e

Method used

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  • Blade of high-power horizontal shaft ocean current energy electric generator and manufacturing method thereof
  • Blade of high-power horizontal shaft ocean current energy electric generator and manufacturing method thereof
  • Blade of high-power horizontal shaft ocean current energy electric generator and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] refer to figure 1 , image 3 , Figure 5 , Figure 6 , Figure 13-16 : the blade of the high-power horizontal axis ocean current energy generator, including a hollow metal girder 10, the metal girder 10 gradually widens from top to bottom, and several horizontal webs 105 to strengthen the rigidity are welded at intervals on the metal girder 10, the metal girder The cross section of 10 is type, the top of the metal girder 10 is welded with a metal blade tip 11, the metal blade tip 11 is fixed with a first net cutter 12, and the metal blade tip 11 and the first net cutter 12 are integrally manufactured by a four-axis linkage machine tool, or the metal blade The tip 11 is integrally manufactured by a four-axis linkage machine tool, and the first mesh cutter 12 is welded on the metal blade tip 11, and the metal blade root 13 is welded to the bottom of the metal girder 10, and the metal blade root 13 is integrally manufactured by a four-axis linkage machine tool. The m...

Embodiment 2

[0077] refer to figure 2 , Figure 4 , Figure 5 , Figure 13-16 : This embodiment also adopts the cross section as type metal girder 10, the difference between the present embodiment and the first embodiment is that the metal blade root 13 is a threaded hole 133 connected with the hub 80 of the current energy generator, the threaded hole 133 is an internal threaded hole, and the internal thread The hole is threadedly connected with the external threaded hole on the hub 80 of the ocean current energy generator.

Embodiment 3

[0079] refer to Figure 7 , Figure 8 , Figure 13-16 : The difference between this embodiment and Embodiment 1 is: the cross section of the metal girder 10 is type, using the The structural diagram of the blade of the metal girder with cross-section is as follows Figure 8 shown.

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Abstract

The invention discloses a blade of a high-power horizontal shaft ocean current energy electric generator. The cross section of a metal girder of the blade is shaped like the pictures in the specification; a metal blade tip is welded to the top end of the metal girder; a first net cutter is fixed to the metal blade tip; a metal blade root is welded to the bottom end of the metal girder and is a flange or a screwed hole which is connected with a hub of the ocean current energy electric generator; a first fiber fabric which is smeared or soaked by a first mixed resin wraps and is solidified on the outer side of the metal girder; an outer covering is stuck to the outer side surface of the metal girder; an inner covering is stuck to the inner side surface of the metal girder; gaps between the front side surface and the back side surface of the metal girder and the outer covering as well as the inner covering are filled with foam filling cores; a second net cutter is inserted to the foam filling core at the lower end of the metal girder; a front edge metal wrapping sheet is stuck to one side of the rotating direction of the blade; an anti-pollution coating is sprayed onto the surface of the blade. The blade has the advantages of tide load impact resistance, high strength, high rigidity, gravel collision friction resistance, abrasion resistance, blade tip cavitation corrosion resistance, fishing net winding resistance and marine organism adhesion.

Description

technical field [0001] The invention relates to a blade of a horizontal-axis ocean current energy generator and a manufacturing method thereof. The blade is suitable for a high-power horizontal-axis ocean current energy generator. Background technique [0002] Ocean current energy is a clean and renewable energy. my country has abundant ocean current energy reserves, and its development and utilization potential is huge. Compared with waves, the change of ocean current energy is stable and regular, and has the advantages of high energy density, strong regularity, and large reserves. The ocean current energy generator converts the ocean current energy into electric energy for users to use. As the first-level mechanism for capturing ocean current energy, the blade is an important part of the ocean current energy generator. Its structural design and material selection directly affect the energy capture efficiency and unit performance. No long-term stable operation. [0003] A...

Claims

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Application Information

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IPC IPC(8): F03B3/12B23P15/04B29C70/34
CPCY02E10/20Y02P70/50
Inventor 顾海港李伟林勇刚顾亚京刘宏伟
Owner ZHEJIANG UNIV
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