Hydraulic turbine generator

Abstract

The invention discloses a hydraulic turbine generator. The hydraulic turbine generator comprises a hydraulic turbine room and a power generation room; the hydraulic turbine room is provided with a water inlet and a water outlet that have equal calibers and overlapped axes, and are opposite in the directions; a rotating wheel is arranged in the hydraulic turbine room; the rotating wheel is composed of a wheel disc and a water bucket or blades; the hydraulic turbine generator further comprises a reducing pipe connected with the water inlet and an increasing pipe connected with the water outlet; between the inner wall of the hydraulic turbine room and a rotatable sweeping space of the rotating wheel, a design of uniform small clearances is adopted; the power generation room is arranged at the outer side of the hydraulic turbine room; preferably, a contraction angle of the reducing pipe is 15-30 degrees; preferably, the axial length of the reducing pipe is greater than the inside diameter of the large opening; the clearance between the inner wall of the hydraulic turbine room and the rotatable sweeping space of the rotating wheel is less than or equal to 1mm, and less than or equal to 0.5mm preferably. Compared with the prior art, the hydraulic turbine generator disclosed by the invention has the beneficial effects of greatly increasing the velocity of water flow which impacts the blades of the rotating wheel, raising a specific rotary speed and loading ability of the rotating wheel, and further improving power generation efficiency; and meanwhile, the hydraulic turbine generator further has the beneficial effects of keeping the velocity of tail water, and being convenient in mounting and the like.

Description

technical field [0001] The invention relates to an energy-saving device, in particular to a hydroelectric generator utilizing tap water to generate electricity. Background technique [0002] Hydrogenerators are generally divided into two types: impact type and counter-attack type. The impact type is rarely used in existing technical solutions for generating electricity from tap water due to the loss of tail water flow velocity. Although the counter-attack type is adopted, due to family The water flow rate is small and the duration is short, which is not suitable for counter-action hydroelectric generators. Therefore, these solutions have not been practically applied. Chinese Patent Publication No. CN 101825051 A discloses a water pipe power generation device and a radio using a water pipe power generation device to generate electricity, providing a water turbine generator solution that can be connected to a water pipe and is different from the classic impact type. The coil ...

AI Technical Summary

Problems solved by technology

The disadvantages of this scheme are: since the coil is arranged on the inner side of the runner, the radius of the runner cannot be made too small, which limits the increase of the specific speed; since the inner diameter of the household tap water pipe is usually only 20mm at most, the flow path can be narrowed to improve the speed. The flow rate of the water flow impinging on the runner conflicts with the effective cutting area necessary to ensure the coil

In addition, the blades on the runner of this scheme are too small, and the gap between them and the inner wall of the flow channel is too large, which reduces the utilization rate of water flow energy and the load capacity of the runner.

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