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Self-adaptable straight-vaned pitch variable water turbine for tidal energy conversion

A water turbine and self-adaptive technology, applied in the direction of reaction engines, hydroelectric power generation, mechanical equipment, etc., can solve the problems of complex mechanism and high cost of the blade swing system

Inactive Publication Date: 2007-09-12
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the mechanism of the blade swing system is complicated and the cost is high

Method used

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  • Self-adaptable straight-vaned pitch variable water turbine for tidal energy conversion
  • Self-adaptable straight-vaned pitch variable water turbine for tidal energy conversion
  • Self-adaptable straight-vaned pitch variable water turbine for tidal energy conversion

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Embodiment Construction

[0016] Two preferred schemes for the implementation of the present invention are given below and described in conjunction with the accompanying drawings.

[0017] The first technical scheme of the straight-blade self-adaptive variable-pitch water turbine used for tidal current energy conversion is shown in Figures 1 and 2, which is to use a coil spring to control the angle of attack of the blades, which includes a set of turbine frame (1), a root main shaft (2), a turntable box (3), several blades (4), blade shafts (5) and matching blade bearing seats (12), swing rods (6), hinge supports (7), Guide rod (8), coil spring (9), sliding sleeve (10) and sliding sleeve seat (11). Wherein, the circular and hollow turntable box (3) with rectangular cross-section is inserted into the bearing in the hydraulic turbine base (1) by means of the fixed main shaft (2) at the central axis, and can freely rotate around the central axis. A plurality of trapezoidal or rectangular straight-leaf bl...

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Abstract

A straight blade type adaptive thread pitch-variable water turbine using the energy of sea tide and water stream in river is composed of a water turbine base set, a mainshaft, one or two rotary disk boxes, several blades, blade axle, bearing holder of blades, spring and accessories. It features that a simple spring mechanism is used to regulate the optimal incidence angle of blades, so increasing its P / C ratio by 30%.

Description

technical field [0001] The invention relates to a straight-blade self-adaptive variable-pitch water turbine used for tidal current energy conversion, which is a transformation of the hydraulic turbine structure utilizing ocean tidal current and river flow energy, and belongs to the field of hydraulic machinery and hydraulic engines. Background technique [0002] At present, in the technical field of ocean energy application, tidal current energy turbines include horizontal-axis propeller type, horizontal-axis straight-blade type, vertical-axis ring type, and vertical-axis straight-blade type. It can also be divided into fixed angle of attack type and variable angle of attack type according to the adjustability of blade angle of attack. The fixed angle-of-attack type straight-blade turbine has a simple structure, but its energy utilization rate (ie, the ratio of the turbine's rotational kinetic energy to the tidal current kinetic energy) is low, and the starting moment after ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03B3/06
CPCY02E10/223Y02E10/20
Inventor 李凤来朱典明张亮
Owner HARBIN ENG UNIV
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