Water turbine wingsection for ocean current generation

A technology for ocean current power generation and water turbines, which is applied in ocean energy power generation, hydropower generation, engine components, etc., can solve problems such as performance deterioration, airfoil stall, and drag coefficient increase, and achieve the effect of performance improvement and small processing.

A technology for ocean current power generation and water turbines, which is applied in ocean energy power generation, hydropower generation, engine components, etc., can solve problems such as performance deterioration, airfoil stall, and drag coefficient increase, and achieve the effect of performance improvement and small processing.

CN1587674AInactive Publication Date: 2005-03-02SHANGHAI JIAO TONG UNIV
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  • Water turbine wingsection for ocean current generation
  • Water turbine wingsection for ocean current generation
  • Water turbine wingsection for ocean current generation

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The specific implementation of the present invention will be further described below with the airfoil chord length c as the unit 1.

[0023] After taking the airfoil chord length as unit 1, the blade coordinates are listed in Table 1.

[0024] upper surface

lower surface

X

Y

X

Y

0.0000000E+00 0.0000000E+00

1.6666668E-02 3.6133267E-02

3.3333335E-02 4.9626011E-02

5.0000001E-02 5.9244741E-02

6.6666670E-02 6.6778749E-02

8.3333336E-02 7.2925441E-02

0.1000000 7.8045815E-02

0.1166667 8.2356974E-02

0.1333333 8.6002566E-02

0.1500000 8.9084186E-02

0.1666667 9.1677360E-02

0.1833333 9.3840457E-02

0.2000000 9.5619962E-02

0.2166667 9.7053848E-02

0.0000000E+00 0.0000000E+00

1.6666666E-02 -1.7037073E-02

3.3333331E-02 -2.3597769E-02

4.9999997E-02 -2.8401444E-02

6.6666663E-02 -3.2277219E-02

...

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Abstract

The invention relates to a kind of wing section used rof the ocean current electricity-generating water turbine. According to the fairly wide range of working condition of the ocean current electricity-generating water turbine, select the fairly small curvature and the fairly small greatest thickness. The ratio of the greatest thickness and length of chord is d / c=0.1570, the ratio of the greatest curvature and the length of chord is f / c=0.0229. The wing section has sacrificed part of functions under the routine angle, but meanwhile, it obtains the superior function of condition changing. Moving the position of the greatest thickness backward, can improve the reserve working capacity and also improve the left coefficient of wing section. At the point X r / c=0.95 of back edge, the wing section takes are as transition. The ratio of arc radius and chord length of wing section is R / c=0.0208. Enlarging the radius of back edge 1f wing section can weaken the influence when the slight wing stalls under a big angle, and reduce the damages objects uotside have done with the wing section.

Description

technical field [0001] The invention relates to an airfoil of a water turbine, in particular to an airfoil for an ocean current power generation water turbine, which is specially designed for the special requirements of the ocean current power generation on the water turbine. Background technique [0002] Ocean current power generation is a new way of obtaining energy. The water turbine used for ocean current power generation drives the water turbine to rotate through the flow of seawater, and converts the kinetic energy of seawater into the mechanical energy of the water turbine. It is an environmentally friendly and clean way to obtain electricity. Turbine blades are the most critical components of this type of turbine. As for the turbine blades, the airfoil selection and research of the blade cross section is the most direct factor affecting the mechanical efficiency of the turbine. [0003] Due to factors such as the low flow rate of the ocean current, low water head, ...

Claims

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Application Information

Patent Timeline
02 Mar 2005
Publication
CN1587674A
IPC
F03B1/00; F03B13/22
CPC
Y02E10/38; Y02E10/223; Y02E10/20; Y02E10/30
Inventors
杨波; 谷传纲