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Small water head water turbine blade profile

A water turbine and water head technology, which is applied in electromechanical devices, mechanical equipment, hydroelectric power generation, etc., can solve the problems of low energy utilization rate and achieve the effect of improving water flow utilization rate and high efficiency

Pending Publication Date: 2019-07-16
星沛信息科技(德州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the shortcoming of low energy utilization rate in the prior art, and propose a small head water turbine blade type

Method used

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  • Small water head water turbine blade profile
  • Small water head water turbine blade profile
  • Small water head water turbine blade profile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] refer to Figure 1-2 , a small head water turbine blade type, including a fairing 1, the end of the fairing 1 located at the hub 5 is provided with a water inlet 7, the end of the fairing 1 far away from the hub 5 is provided with a water outlet 8, and the end of the fairing 1 inside is provided with There is a middle tube 2, and the outer wall of the middle tube 2 is provided with a number of straight rods 3, which are evenly distributed around the middle tube 2, and the straight rods 3 are all fixedly installed on the middle tube 2, and the number of the straight rods 3 is three , and the angle between two adjacent straight rods 3 is 120 degrees, and the end of the straight rod 3 away from the middle tube 2 is fixedly installed on the inner wall of the fairing 1, and the inside of the middle tube 2 is provided with a generator 9, The generator 9 is fixedly installed in the middle cylinder 2, the output end of the generator 9 is fixedly installed with the motor shaft 4...

Embodiment 2

[0038] As another preferred embodiment of the present invention, the only difference from the previous embodiment is that the diameter of the impeller is 150mm, the hub ratio is 0.4, the number of blades is 9 blades, and the positions of the five control points of the non-uniform rational B-spline curve of the blade inlet angle Coordinates, where the coordinates are in the form of (blade height percentage, blade inlet angle) followed by: (0%, -40.50°), (25%, -2.40°), (50%, 25.40°), (75%, 42.80 °), (100%, 53.00°); the position coordinates of the five control points of the blade outlet angle non-uniform rational B-spline curve, where the coordinates are in the form of (blade height percentage, blade outlet angle) in turn: (0%, 60.59°), (25%, 50.61°), (50%, 42.95°), (75%, 37.07°), (100%, 32.45°); 5 controls of blade chord length non-uniform rational B-spline curve Point position coordinates, where the coordinate form is (blade height percentage, blade chord length) in turn: (0%, ...

Embodiment 3

[0040]As another preferred embodiment of the present invention, the only difference from the previous embodiment is that the diameter of the impeller is 150mm, the hub ratio is 0.4, and the number of blades is 9. The position coordinates of the five control points of the non-uniform rational B-spline curve of the blade inlet angle, where the coordinates are in the form of (blade height percentage, blade inlet angle) as follows: (0%, -45.50°), (25%, -7.40 °), (50%, 20.40°), (75%, 37.80°), (100%, 48.00°); the position coordinates of the five control points of the blade outlet angle non-uniform rational B-spline curve, where the coordinate form is (Blade height percentage, blade outlet angle) are: (0%, 54.82°), (25%, 45.79°), (50%, 38.86°), (75%, 33.54°), (100%, 29.36° ); the position coordinates of the five control points of the non-uniform rational B-spline curve of blade chord length, wherein, the coordinate form is (blade height percentage, blade chord length) followed by: (0...

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Abstract

The invention relates to the technical field of water turbine component parts, in particular to a small water head water turbine blade profile. A fairing is included. A middle barrel is arranged at one end of the inner side of the fairing. A plurality of straight rods are arranged on the outer side wall of the middle barrel, evenly distributed around the middle barrel and are fixedly arranged on the middle barrel. The ends, away from the middle barrel, of the straight rods are fixedly arranged on the inner wall of the fairing. A power generator is arranged in the middle barrel and fixedly arranged in the middle barrel. A motor shaft is fixedly arranged at the output end of the power generator, penetrates through the middle barrel and is rotationally connected with the middle barrel. The end, away from the power generator, of the motor shaft is fixedly connected with a hub. The hub is arranged in the fairing. A plurality of blades are arranged on the outer side wall of the hub and evenly distributed around the hub. The blades and the hub are of an integrated structure. According to the small water head water turbine blade profile, the blade inlet angle, the blade outlet angle and the blade chord length serve as main control parameters, parameters are reasonably set, accordingly, the blade performance is improved, and the energy utilization rate is increased.

Description

technical field [0001] The invention relates to the technical field of hydraulic turbine components, in particular to a blade type of a small head hydraulic turbine. Background technique [0002] As a clean and renewable energy source, hydropower has been highly valued by the state. At present, the impellers used in most hydroelectric power generation are based on high water head design, which has strict requirements on water resources and geographical environment, and requires large-scale investment. However, for the operating environment of small water heads, the impellers currently used generally have low efficiency. Therefore, a high-efficiency blade type is of great significance and practical value for the efficient use of water energy by a water turbine. Contents of the invention [0003] The object of the present invention is to solve the shortcoming of low energy utilization rate in the prior art, and propose a small head water turbine blade type. [0004] In ord...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03B13/00F03B3/18F03B3/12H02K7/18
CPCF03B13/00F03B3/18F03B3/126F03B3/121H02K7/1823F05B2240/30Y02E10/20
Inventor 梁钟杨筱沛蒋博彦郭旭升郭自清孙珺
Owner 星沛信息科技(德州)有限公司
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