Last-stage front half section adjustable stator blade for axial-flow compressor and working method thereof

An axial flow compressor and stator blade technology, which is applied to the components of the pumping device for elastic fluids, mechanical equipment, machines/engines, etc., can solve the loss increase, loss, and can not guarantee the axial outlet of the final stage stator, etc. problems, to achieve the effect of broadening the operating range and improving the efficiency of the compressor

Inactive Publication Date: 2015-05-06
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF5 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, as the working state of the compressor changes, the final stage stator may work at a large positive and negative angle of attack, resulting in increased losses
If the overall adjustable stator blades are used to change the angle of attack, the axial outlet of the last stage stator cannot be guaranteed, resulting in a large loss

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
  • Last-stage front half section adjustable stator blade for axial-flow compressor and working method thereof
  • Last-stage front half section adjustable stator blade for axial-flow compressor and working method thereof
  • Last-stage front half section adjustable stator blade for axial-flow compressor and working method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The following combination Figure 1 to Figure 7 Illustrate the implementation method of the adjustable stator vane in the front section of the present invention and the stator composed of it:

[0023] The blades of the final stator are obtained by the aerodynamic design method of the axial flow compressor, that is, the initial design, the flow design, the two-dimensional blade design and the three-dimensional blade design.

[0024] The specific structure of the final stator blade: the rotatable front blade 8 is fixed with the rotating shaft 9; the non-adjustable rear blade 10 is fixedly installed on the outer casing of the axial flow compressor ( Figure 5 ). When the operating condition of the axial flow compressor is adjusted, the rotation of the rotating shaft drives the deflection of the front blade to adapt to the change of the inlet airflow angle.

[0025] Example. Such as Figure 6 , rotate the front section of the stator, so that the front section of the sta...

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 last-stage front half section adjustable stator blade for an axial-flow compressor and a working method thereof and belongs to the technical field of impeller machinery. The last-stage stator blade comprises an adjustable front half section blade (8) and a nonadjustable rear half section blade (10), wherein the adjustable front half section blade (8) is arranged on the nonadjustable rear half section blade (10) through a rotating shaft (9); the rotating shaft (9) is positioned at the position with the largest thickness of the last-stage stator blade; the nonadjustable rear half section blade (10) is fixedly arranged on an outer cartridge receiver of the axial-flow compressor. The blade has the advantages of (1) the operation pressure ratio and the flow rate range of the compressor are expanded; (2) the efficiency of the compressor in the whole working range is improved.

Description

technical field [0001] The invention relates to a front-half adjustable stator vane used in the last stage of an axial flow compressor and a working method thereof, belonging to the technical field of impeller machinery. Background technique [0002] The general working principle of the axial flow compressor is: when the gas flows through the high-speed rotating blade (1), the blade converts the mechanical energy into the pressure energy and kinetic energy of the gas, thereby increasing the pressure and speed of the gas. In the process of energy conversion, a small part of mechanical energy is converted into heat energy through other loss methods, so the gas temperature will gradually increase during the compression process. When the air flow passes through the vane (2), on the one hand, part of the kinetic energy is further converted into pressure energy, which acts as a diffuser, and on the other hand, the gas is introduced into the next stage of moving vane at a certa...

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): F04D29/56G06F17/50
CPCF04D29/563F05D2240/12G06F30/00
Inventor 周正贵李琪
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap