Gap line projecting surface hub of same-diameter impeller group

• Main Authors: GAO ZHILIAN, GAO GUANLIANG
• Format: Patent
• Language: English
• Published: 24.06.2015
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES FOR LIQUIDS; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR; PRODUCING MECHANICAL POWER; STEAM ENGINES; WEAPONS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS

The invention relates to a gap line projecting surface hub of a same-diameter impeller group, which is characterized in that the cylindrical surface of the gap line projecting surface hub is an arc-shaped gap line projecting surface; the gap line projecting surface hub is in clearance fit with guide vanes same in lengths of straight lines of front and tail ends and lengths of straight lines of arc points; a plurality of multi-proportion line vanes same in lengths of straight lines of front ends and lengths of straight lines of proportion points are uniformly distributed at the circumference of the gap line projecting surface hub; and the cooperation included angle is eliminated by the cooperation of guide vanes and guide vane hubs and the cooperation of the multi-proportion line vanes and moving vane hubs. The gap line projecting surface hub of the same-diameter impeller group, disclosed by the invention, has the beneficial effects that the cooperation included angle can be eliminated; disturbance and eddy are avoided in a flow channel; the fluid pressure speed in kept stable; the impeller groups of each group can simultaneously wor in a better operating state; and higher mechanical efficiency is realized.