Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
An optimization method and supersonic technology, applied in the field of mechanical processing, can solve the problems of supersonic airfoil design and low optimization efficiency, and achieve the effect of reducing shock loss, reducing difficulty and simple process
Pending Publication Date: 2022-03-01
HARBIN TURBINE +1
View PDF0 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0003] In order to solve the problem that most of the traditional supersonic airfoils rely on the oblique cutting of the blade steam outlet side to control the flow path, and often rely on the experience of designers, resulting in low efficiency in the design and optimization of supersonic airfoils, the invention further proposes A supersonic airfoil shape design optimization method
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
specific Embodiment approach 1
[0022] Specific implementation mode one: combine Figure 1 to Figure 7 To illustrate this embodiment, a supersonic airfoil shape design optimization method described in this embodiment is realized through the following steps:
[0023] Step 1, parameterize the blade shape based on UG software;
[0024] Step 2, CFX pneumatic calculation;
[0025] Step three, optimize the algorithm.
specific Embodiment approach 2
[0026] Specific implementation mode two: combination Figure 1 to Figure 7 To illustrate this embodiment, the process of parameterizing the blade shape based on UG software in step 1 of a supersonic airfoil shape design optimization method described in this embodiment is:
[0027] In step a, the inner and back arc curves of the airfoil adopt NURBS curves respectively, and the steam inlet and outlet adopt circular arcs to design the shape of the supersonic airfoil;
[0028] Step b. According to the shape design in step a, UG software is used to correlate control points to realize the continuous closure of the curve, so that the blade shape is fully parameterized and adjustable.
specific Embodiment approach 3
[0029] Specific implementation mode three: combination Figure 1 to Figure 7 To illustrate this embodiment, the CFX aerodynamic calculation process in Step 2 of a supersonic airfoil shape design optimization method described in this embodiment is: drive the CFX software through UG, and establish a calculation process, including geometry generation, mesh division, and previous Processing settings, smooth post-processing.
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
Login to view more
Abstract
The invention discloses a supersonic blade profile modeling design optimization method, and relates to a design optimization method, in particular to the supersonic blade profile modeling design optimization method. The invention aims to solve the problem that most of the traditional supersonic blade profiles are used for obliquely cutting off a control flow channel by virtue of the steam outlet sides of the blades, which often depends on the experience of designers, so that the supersonic blade profile design and optimization efficiency is relatively low. The method comprises the following specific steps: step 1, parameterizing a blade profile based on UG software; step 2, CFX pneumatic calculation; and step 3, optimizing an algorithm. The invention belongs to the field of machining.
Description
technical field [0001] The invention relates to a design optimization method, in particular to a supersonic airfoil shape design optimization method, which belongs to the field of mechanical processing. Background technique [0002] With the continuous increase of the installed capacity of the generator, the demand for the final stage blade of the steam turbine is higher, and the design difficulty of the final stage blade mainly lies in the design of the supersonic blade shape on the upper part of the blade; the Mach number changes from subsonic to supersonic, and the blade The flow path of the type is changed from tapered to zoomed. Most of the traditional supersonic airfoils rely on the oblique cutting of the steam outlet side of the blade to control the flow path, often relying on the experience of the designer; therefore, the efficient supersonic airfoil design and optimization is blank. Contents of the invention [0003] In order to solve the problem that most of the...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more