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Hydro Turbine

a technology of hydropower turbine and turbine blade, which is applied in the direction of liquid fuel engines, machines/engines, mechanical equipment, etc., can solve the problems of low efficiency of hydropower turbine, low energy requirement, and lack of common and mature devices, and achieve high efficiency

Inactive Publication Date: 2014-09-11
HANGZHOU LHD INST OF NEW ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a hydro turbine with multiple blades that improves efficiency. By increasing the number of blades, the hydro turbine can generate more power compared to traditional devices. It also reduces friction between the hydro turbine and the center shaft, further improving its efficiency. The hydro turbine can be used in tidal currents and has self-startup capabilities at different current speeds.

Problems solved by technology

The impeller of the hydro turbine has only two or three blades, usually without a large flow guiding dome, but the efficiency thereof is generally low.
Nowadays, with the increasing shortage of energy and the increasing serious greenhouse effect, energy is required to be low-carbon.
No common and mature devices are available.
The devices cannot be large-scaled, have low efficiency, and fail to reach a completely satisfied level.

Method used

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Embodiment Construction

[0017]To ensure that those skilled in the art better understand the scheme of the present invention, the technical scheme in the embodiment is clearly and completely described below with reference to drawings attached to the embodiment of the present invention. Obviously, the embodiment is only a schematic one of the present invention and cannot be regarded as limit of the present invention. Based on the embodiment in the present invention, all other embodiments made by those skilled in the art without creative labor all belong to the protection scope of the present invention.

[0018]The following embodiment of the present invention is described with reference to the attached drawings. A hydro turbine includes a center shaft 1 and at least two annular wheel discs 2. The center shaft 1 is installed at the centers of the annular wheel discs 2. The axis direction of the center shaft 1 is vertical to radial directions of the annular wheel discs 2. Spokes 3 are installed between the annula...

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Abstract

A hydro turbine includes at least two annular wheel discs, a center shaft disposed at the centers of the annular wheel discs, spokes disposed between the annular wheel discs and the center shaft, and a plurality of blades annularly disposed at the annular wheel discs. The number of the blades is at least 28 and at most the integer number of an outer circumference measured in centimeters of one annular wheel disc. The sum of arc length of one side of all the blades is 0.85-2 times the outer circumference. A blade angle formed between two line segments connecting the middle point to the two endpoints of an arc of each blade is in a range of 100°-170°. A blade installation angle formed between the chord line of the arc and a radius line of each annular wheel disc is in a range of 15°-75°.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This Non-provisional application claims priority of Chinese Patent Application No. 201310074235.0 filed on Mar. 8, 2013, the entire contents of which are hereby incorporated by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a hydro turbine.[0004]2. Description of the Related Art[0005]Tidal hydro turbines in the prior art mainly use wind power generation technology for reference and are classified into two kinds. One kind is the hydro turbine with a horizontal shaft. The impeller of the hydro turbine has only two or three blades, usually without a large flow guiding dome, but the efficiency thereof is generally low. The other kind is the hydro turbine with a vertical shaft borrowing ideas from the wind power generation. The impeller of the hydro turbine basically has three to five blades, and some have more than ten blades. This impeller is a traditional double-impact impeller and...

Claims

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Application Information

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IPC IPC(8): F01D1/04
CPCF01D1/04F03B13/264F03B17/063F05B2240/244F05B2240/301Y02E10/30Y02E10/20
Inventor LIN, DONGHUANG, CHANGZHENGCHEN, ZHENGHAN
Owner HANGZHOU LHD INST OF NEW ENERGY
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