Twisted blade of diffuser, design method, diffuser and centrifugal/oblique flow compressor

• Main Authors: ZHAO WEIGUANG, HE FEI, YIN YUEQIAN, YANG YUANYING, AN ZHIQIANG, JING XIAOMING, HUANG SHENGQIN
• Format: Patent
• Language: Chinese; English
• Published: 12.10.2018
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The invention discloses a twisted blade of a diffuser, a design method, the diffuser and a centrifugal/oblique flow compressor. The method comprises the steps that a diffuser hub meridional channel and a casing meridional channel are set; all model section meridional channel lines at multiple specified blade height positions are generated according to the blade profile requirements; all model section revolution surface blade profile mean camber lines are fit according to distribution of mean camber line blade angles along the meridian chord length; distribution of the given blade profile thickness along the meridian chord length is overlapped based on the blade profile mean camber lines, leading edges and trailing edges are added, and revolution surface blade profiles are obtained; and diffuser blade spanwise folding is completed in a trailing edge stacking manner, and a three-dimensional curved blade is generated. The twisted blade is obtained by adjusting the mean camber line blade angle design, the diffuse