A multi-stage radial flow counter-rotating turbine structure

Abstract

The invention discloses a multilevel radial flow type counterrotating turbine structure. The multilevel radial flow type counterrotating turbine structure comprises a main impeller, an auxiliary impeller, a planet carrier, an outer gear ring and a sun gear, wherein a plurality of rows of main impeller blades distributed in the radial direction are arranged on the inner side of the main impeller; a plurality of rows of auxiliary impeller blades distributed in the radial direction are arranged on the inner side of the auxiliary impeller; the main impeller and the auxiliary impeller are parallel and are oppositely arranged, and rows of the main impeller blades and rows of the auxiliary impeller blades are distributed in a staggered mode in the radial direction; the axial center of the main impeller is fixedly connected with a shaft through a spoke belt, and the shaft passes through the center hole of the auxiliary impeller and is fixedly connected with the sun gear; the main impeller, the shaft and the sun gear are coaxially arranged; the auxiliary impeller and the outer gear ring are coaxial and are fixedly connected; the sun gear and the planet carrier are arranged inside the outer gear ring; the outer gear ring is meshed with the sun gear through a plurality of planetary gears on the planet carrier. By adopting the multilevel radial flow type counterrotating turbine structure, working capacity of a turbine is enhanced, and the size of the turbine is reduced; the power output structure of the planetary gears can be adjusted, so that wheel efficiency of the turbine is improved.

Description

technical field [0001] The invention relates to the technical field of radial flow turbines, in particular to a multi-stage radial flow counter-rotating turbine structure for improving turbine performance. Background technique [0002] Radial flow turbines are widely used in small energy conversion occasions, such as power sources for ships or vehicles, and industrial auxiliary steam turbines, by converting the energy of radially flowing working fluid into rotational kinetic energy. Compared with the axial-flow turbine, the radial-flow turbine has the advantages of small flow, high efficiency, simple and reliable structure, and easy manufacture; and its power density is 15%-50% higher than that of the axial-flow turbine. [0003] Traditional radial turbines often adopt the structure of centripetal turbines, and due to the flow direction, the structural arrangement of multi-stage radial turbines is relatively complicated and the structural volume is large. Contents of the i...

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Problems solved by technology

[0003] Traditional radial turbines often adopt the structure of centripetal turbines, and due to the flow direction, the structural layout of multi-stage radial turbines is relatively complicated and the structure volume is large

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