A double-impeller bi-directional shaft-extending tubular water turbine with space blades

Abstract

The invention discloses a two-impeller bidirectional-shaft-extension tubular turbine with space blades. The two-impeller bidirectional-shaft-extension tubular turbine with the space blades comprises a water passing runner, a front impeller and a rear impeller are installed in the water passing runner in parallel in the radial direction of a pipeline, and a gap is reserved between the front impeller and the rear impeller; the front impeller is connected with one end of a front impeller rotary shaft, the other end of the front impeller rotary shaft is connected with a front impeller thrust bearing, and the front impeller thrust bearing and a front impeller power generator are connected; and the rear impeller is connected with one end of a rear impeller rotary shaft, the other end of the rear impeller rotary shaft is connected with a rear impeller thrust bearing, and the rear impeller thrust bearing and a rear impeller power generator are connected. According to the two-impeller bidirectional-shaft-extension tubular turbine with the space blades, the power generators and the thrust bearings are arranged outside the runner, so that air tightness and damp prevention of the power generators do not need to be taken into consideration, the unit runner is smooth, the flowing loss is small, the plant excavation volume is small, and operation and maintenance are convenient; and by the adoption of the two impellers independent from each other, a unit can operate both forwards and backwards, and the effect that the operation efficiency is high when the unit operates forwards and backwards is ensured.

Description

technical field [0001] The invention belongs to the technical field of tidal power generation, and in particular relates to a two-way shaft-extending tubular water turbine with space blades. Background technique [0002] As a renewable and clean energy, tidal energy is getting more and more attention today when coal burning is seriously polluting. Practice has shown that the more suitable power generation method for tidal power stations is bidirectional power generation from a single reservoir. The so-called single-reservoir two-way power generation means that the hydropower station has only one reservoir, but it can generate electricity at the same time when the tide rises and falls. Therefore, for a single-storage two-way power station, its hydroelectric generating set is required to have the ability of two-way power generation. In response to the requirements of bidirectional power generation of tubular turbines, domestic and foreign experts and scholars have developed ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a two-way shaft-extending tubular water turbine with space blades, which solves the problems of complex structure and difficult operation of existing hydroelectric generating units

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