Special turbine for self-variable-pitch bidirectional-flow ocean current power station

A two-way flow, self-changing technology, applied in the direction of hydropower, reaction engine, renewable energy power generation, etc., can solve the problems of impeller turbine damage, cable winding, seawater corrosion, etc., to achieve continuous and stable operation, reliable operation, structural simple effect

Active Publication Date: 2010-08-11
NORTHEAST NORMAL UNIVERSITY
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the traditional impeller turbine is easy to be damaged, and the self-adjustment system of the traditional ocean current generator is easy to suffer from seawater corrosion, and at the same time solve the problem of cable entangle

Method used

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  • Special turbine for self-variable-pitch bidirectional-flow ocean current power station
  • Special turbine for self-variable-pitch bidirectional-flow ocean current power station
  • Special turbine for self-variable-pitch bidirectional-flow ocean current power station

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Embodiment Construction

[0011] The large solid buoyancy blade part 1 is rectangular, the cross section is streamlined, and the root span increases to form a self-variable pitch hydrodynamic compensation winglet 2. The bottom of the large solid buoyancy blade is a cylindrical blade shaft 5, and the upper end of the blade shaft 5 is provided with a convex Shape limit controller 4. A set of two large buoyancy blades is a symmetrical airfoil (NACA0012). The wheel hub 6 is symmetrically provided with two cylindrical through-mounting holes 7, and grooves 8 are respectively arranged on the right and left sides of the upper and lower ends of the left and right mounting holes 7. The cylindrical blade shaft 5 is inserted into the installation hole 7 through the polymer water lubricated bearing, and can rotate freely in the installation hole 7. The limit controller 4 is embedded in the groove 8, and can rotate around the blade shaft 5 by plus or minus 14 Degree, that is, the rotation angle of the blade rotatin...

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Abstract

The invention relates to a special turbine for a self-variable-pitch bidirectional-flow ocean current power station, belonging to the field of renewable energies. Symmetric airfoil (NACA0012) high-solidity blades are adopted. The root part of each blade is provided with a self-variable-pitch hydrodynamic force compensation winglet. A limiting control system is arranged at the root part of each blade to ensure that the angle of the blade can be adjusted. When the direction of ocean current is changed, the hydrodynamic force compensation winglet of the blade generates deflection torque to enable the blade to vary blade pitch and the angle is limited by a limiting controller arranged at the root of the blade. Thereby, the optimum attach angle is kept, the highest conversion efficiency is obtained, the rotating direction of the blade is unchanged when reverse current comes, the entire generating set has no direction adjustment control device and power transmission cables are prevented from being twisted. The used material can effectively resist seawater corrosion. The invention has the advantages that the structure is simple, the operation is reliable, the special turbine has the property of resisting seawater surge destruction, and the turbine can continuously and stably work in seawater for long time.

Description

technical field [0001] The invention belongs to the field of renewable energy, and in particular relates to a special-purpose turbine for a self-variable bi-directional flow ocean current power station. Background technique [0002] At present, the international energy crisis and continuous environmental degradation have caused countries to increase their efforts to develop new renewable energy sources. Ocean energy, especially ocean current energy, has incomparable sustainability, regularity and predictability. with commercial prospects. Internationally, the technology of horizontal-axis ocean current power generation in Britain and the United States has developed rapidly, and has entered the demonstration stage of megawatt-scale ocean current power stations, but the technology is not yet mature. In recent years, domestic ocean current power generation technology has also developed rapidly, and there is no big gap with the international one. Nowadays, most of the directio...

Claims

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Application Information

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IPC IPC(8): F03B13/00F03B3/14F03B15/00
CPCY02E10/226Y02E10/223Y02E10/20
Inventor 张雪明朱挽强张萧陈健梅董永军
Owner NORTHEAST NORMAL UNIVERSITY
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