Flow increasing type intelligent water turbine system with equal-diameter spiral-line-shaped tail water flow increasing device

Abstract

The invention relates to a flow increasing type intelligent water turbine system with an equal-diameter spiral-line-shaped tail water flow increasing device. A cross-flow type water turbine generatorset is included. The flow increasing type intelligent water turbine system is characterized in that the equal-diameter spiral-line-shaped tail water flow increasing device and a tail water flow statecontroller are further included; the equal-diameter spiral-line-shaped tail water flow increasing device is formed in the manner that a stress induction unit, a flow increasing transmission unit, a flow increasing releasing unit and an equal-diameter spiral-line-shaped runner unit with an equal-diameter spiral-line-shaped runner blade are sequentially arranged in parallel in the axial direction; the equal-diameter spiral-line-shaped runner blade is gradually stretched in the axial direction of an equal-diameter spiral-line-shaped runner hub according to an equal-diameter spiral line and is evenly arranged on the circumferential inner wall of the equal-diameter spiral-line-shaped runner hub in a space crossed twisting shape; the tail water flow state controller controls the blade angle beta1 of a cross-flow type water turbine generator set runner blade, the blade angle beta2 of the equal-diameter spiral-line-shaped runner blade and the moving distance x of an induction driving rod. By means of the flow increasing type intelligent water turbine system, a large amount of surplus kinetic energy in tail water flow can be used for power generation.

Description

technical field [0001] The invention belongs to the technical field of hydroelectric power generation, and in particular relates to a flow-increasing intelligent water turbine system with an equal-diameter spiral-shaped tail water flow increasing device. Background technique [0002] my country is rich in low-head hydraulic resources, which are generally located in economically developed areas in the middle and lower reaches of rivers. In recent years, the economies of these regions have developed rapidly, and the demand for electricity has grown rapidly. However, these areas are generally energy-stressed areas, and the developable medium and high head hydropower resources have been developed as early as the 1990s. In order to meet the needs of rapid economic development in the region, people turned to develop low-head resources. Tubular hydropower stations are the best way to develop low-head hydraulic resources, and are generally used for water heads below 25m. Compared...

AI Technical Summary

Problems solved by technology

The device overcomes the existing problems of single power generation method and low power generation efficiency, and realizes high-power power generation

However, this device only relies on the curved deflector with a half-crescent shape in cross-section to divert and gather energy, and its energy gathering effect is minimal, so water energy cannot be fully utilized, resulting in a waste of resources

[0007] To sum up, the existing combined hydroelectric power generation devices are only the series connection of different numbers of power generation devices, without considering the problem of the reduction of device efficiency caused by the change of working conditions, so the maximum performance of the device cannot be fully utilized

At the same time, the energy-gathering device only relies on the reduction of the cross-sectional area to increase the flow, and cannot dynamically adjust the amount of flow increase according to the size of the incoming flow, resulting in variable frequency of output power and poor performance

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