Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for optimizing steam turbine blade profile

A steam turbine blade and blade profile technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of discontinuous blade profile, discontinuous connection points, non-tangent, etc. The effect of high academic performance, strong versatility, and high computing efficiency

Active Publication Date: 2017-06-13
CHINA CHANGJIANG ENERGY CORP GROUP
View PDF8 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of profile design methods and data storage accuracy, the blade profile may be discontinuous or not tangent at the connection point between the inner / back arc spline curve and the inlet / outlet arc, resulting in the blade profile discontinuous and uneven

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for optimizing steam turbine blade profile
  • Method for optimizing steam turbine blade profile
  • Method for optimizing steam turbine blade profile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The present invention is described in detail below in conjunction with accompanying drawing:

[0025] figure 1 It is a schematic diagram of the blade profile of the present invention, such as figure 1 As shown, the steam inlet / outlet edges are composed of circular arcs, the inner arc and back arc are non-uniform rational B-spline curves, and the steam inlet edge and outlet edge curves transition smoothly with the inner arc and back arc respectively.

[0026] According to the present invention, a method for obtaining the connection point between the optimized inner arc spline curve and the arc H of the inlet / outlet edge is provided. This method specifically comprises the following steps: get an initial endpoint S0 of the inner arc spline curve and two adjacent fitting points S1, S2, calculate the circle passing through these three points simultaneously, its center of circle is C2, and radius is R2; When the distance Dc between the center C2 and the arc center C1 of the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for optimizing a steam turbine blade profile, in fact a method for optimizing a connection point of an inner arc / back arc spline curve and a steam inlet / outlet edge arc H. By an iterative algorithm for optimizing the connection point of the inner arc / back arc spline curve and the steam inlet / outlet edge arc H, the method for optimizing the steam turbine blade profile applies the optimized blade profile to steam turbine blades. The obtained optimization method can optimize the connection point of the inner arc / back arc spline curve and the steam inlet / outlet edge arc H in a blade profile design. Compared with a blade profile not optimized in the prior art, a fairer and smoother blade profile curve is obtained, and therefore the hydrodynamic performance of a turbine blade component is improved, and the method has a high computational efficiency, so that the method has the advantages of rich industry value and computer-aided design.

Description

technical field [0001] The invention relates to a method for optimizing the profile of steam turbine blades, which is suitable for dynamic and static blades of steam turbines. Background technique [0002] The contour line of the cross-sectional area of ​​the steam turbine blade is called the blade profile, which is usually composed of the inner arc, the back arc, and the steam inlet and outlet arcs at both ends of the non-uniform rational B-spline curve. The steam in the steam turbine completes the entire process of converting heat energy into mechanical energy in the blade passages at all levels, so the blade shape has a great influence on the efficiency of the flow part of the steam turbine. [0003] In the design of steam turbine blade components, the smoothness of its profile is very important from the perspective of fluid dynamic performance requirements. Most of the blade profile lines are stored in the profile drawing file in the form of the fitting points of the in...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/17
Inventor 张鑫刘刚韩方亮王开拓张晓朱娟胡娅陈亚
Owner CHINA CHANGJIANG ENERGY CORP GROUP