radial centrifugal turbine

Abstract

The invention provides a radial centrifugal turbine which is characterized by comprising a rotating shaft in axial symmetry, a housing, a wheel disc in axial symmetry, a plurality of groups of movable vanes in axial symmetry, a plurality of groups of static vanes in axial symmetry and a sealing body, wherein the rotating shaft is used for fixing the wheel disc and is driven by the wheel disc to rotate; the housing comprises a double-air-intake prerotation volute and an air-outlet volute; the wheel disc can rotate around a central shaft; each of the plurality of groups of movable vanes is arranged on the corresponding circumference of the wheel disc, one ends of the movable vanes are fixed on the wheel disc, and the other ends of the movable vanes are rotatably embedded into the housing d through movable vane enclosing bands, and the wheel disc is driven by the movable vanes to rotate under the action of the air flow; one ends of the plurality of groups of static vanes are fixed on the housing, and the other ends of the static vanes are rotatably embedded into the wheel disc through static vane enclosing bands; the sealing body is arranged between the rotating shaft and the housing and used for preventing air flow leakage; the movable vanes and the static vanes are alternatively arranged in the radial direction of the rotating shaft; the one nearest to the rotating shaft is one group of static vanes; movable blades of the movable vanes and static blades of the static vanes are straight blades, and the shapes of the cross sections of the straight blades in the blade height direction are not changed.

Description

technical field [0001] The invention relates to the field of thermal generators or power machinery, in particular to a two-way suction multistage radial centrifugal turbine. Background technique [0002] There are two types of turbines, axial flow and radial flow. [0003] Now commonly used radial flow turbines are all centripetal, and there are also a small amount of centrifugal radial turbines, such as the disclosed radial centrifugal turbine of utility model CN203809056U. Radial centrifugal turbine is a newly developed small thermal generator, which is often used in waste heat power generation, geothermal power generation, solar power generation, automobile turbocharging, etc. [0004] Due to the different linear speeds of rotation at different radial positions in existing axial flow turbines, twisted blades must be used. Even if the design is good, for long blades, there is still a large change in the degree of reaction from the root to the top. From the root to the top...

AI Technical Summary

Problems solved by technology

[0006] Existing radial flow centrifugal turbines are all in the form of one-way suction cantilever, so they have a large axial force and a small intake flow; there is a gap between the top of the blade and the wall of the centrifugal turbine, which will cause gap loss; Only one end of the rotor blade and stator blade of the centrifugal turbine is fixed, and the other end is exposed, which will generate large vibration during the rotation process and increase the instability of the system

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