Changing hub of tide generating set

A technology for generating sets and propeller hubs, applied in the field of pitch-changing hubs, which can solve problems such as sealing, driving force, and pitch-changing angle, etc., and achieve simple and reliable pitch-changing mechanisms, good sealing, and avoid pipeline entanglement

Inactive Publication Date: 2009-09-02
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These devices do not take into account issues such as sealing, driving force and pitch angle, and are not suitable for use in horizontal axis tidal current generator sets

Method used

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  • Changing hub of tide generating set
  • Changing hub of tide generating set
  • Changing hub of tide generating set

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The present invention will be further described below in conjunction with drawings and embodiments.

[0024] Such as figure 1 As shown, the hydraulic cylinder 3 of the present invention, as a part of the entire hub shell, is installed directly in front of the hub main body 2 by screws, and the axis of the hydraulic cylinder barrel 4 is parallel to the direction of the flow. The left end of the piston push rod 7 is threadedly connected with the hydraulic cylinder piston 6, and the front support 8 of the push rod supporting the front end of the piston push rod 7 is fixedly installed in the cylinder barrel 4 of the hydraulic cylinder. U-shaped sealing ring to prevent oil leakage of the hydraulic cylinder.

[0025] Such as figure 1 , figure 2 As shown, each side of the triangular push plate on the piston push rod 7 in the hub main body 2 is respectively installed with a rack 9 parallel to the piston push rod 7 through screws, and the gears at one end of the three gear s...

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PUM

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Abstract

The invention discloses a changing hub of a tide generating set. A hydraulic cylinder is arranged in front of the hub, a piston push rod is provided with three racks parallel to the piston push rod, one end of each gear shaft is meshed with each rack, and the other end is fixedly connected with a blade; when the piston push rod axially moves, the blade rotates around the axial line, a main shaft flange is connected with a hub main body, a shaft hole of the main shaft flange is fixedly connected with a main shaft transmitting mechanical energy, an oil feeding seat is fixedly connected with an engine room, and a sensor end cover is fixedly connected with a displacement sensor which measures the displacement of the piston push rod so as to obtain the blade pitch angle. An oil source is communicated with a left cavity and a right cavity of the hydraulic cylinder by an oil passing hole on the oil feeding seat, an oil distributing groove and an internal oil passing hole on the main shaft, oil passing holes on a push rod rear support and the main shaft flange, and internal oil passing holes in walls of the hub main body and the hydraulic cylinder to form a hydraulic loop. The invention has compact structure, small hub volume, large blade changing drive force and good control performance, and is suitable to be applied to the tide generating set bidirectionally utilizing tide energy; and the blade changing angle can exceed 180 degrees.

Description

technical field [0001] The invention relates to a tidal current generating device, in particular to a pitch hub of a tidal current generating set. Background technique [0002] The horizontal axis tidal current generator set is a device that uses the kinetic energy contained in the tidal current to drive the blades to rotate to generate electricity. Its international research began in the early 21st century. The working principle of the device is similar to that of traditional wind turbines. However, its working environment is much worse than the latter. Usually tidal current generators are installed in waterways with back-and-forth flow characteristics, such as estuaries or waterways between two islands. Since the density of seawater is about 800 times that of air, the size of tidal current generators of the same power level is much smaller than that of wind turbines. [0003] At present, the application of variable pitch technology in wind turbines has been relatively m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03B3/06F03B3/14
CPCY02E10/223Y02E10/20
Inventor 马舜李伟刘宏伟林勇刚
Owner ZHEJIANG UNIV
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