A double impeller water turbine

Abstract

The present invention disclose a dual -leaf wheel wheel turbine, which belongs to the field of fluid machinery technology.The water turbine includes frames, upper horizontal boards, main transmission mechanisms, upper -pairing arm, upper bearing seat, output shaft, first -leaf wheel mechanism, second -leaf wheel mechanism, lower horizontal plate, lower -bearing arm, and lower bearing seat; the first leaf wheel mechanism;Installed between the upper and lower horizontal plates with the second -leaf wheel mechanism, the two -leaf wheels can rotate by the axis under the action of fluid, but the rotation direction is the opposite.The shaft; the upper and lower arms are solidly linked to the upper and lower horizontal plates, respectively, and the impeller and main drive mechanism are installed on the frame through the upper and lower bearing seats to achieve the polarization of the water turbine.The double -leaf wheel wheel turbine provided by the present invention organically integrates the lift characteristics of the blades. It has the advantages of excellent self -activation performance, high conversion efficiency, flexible distribution, environmentally friendly, low site requirements, and wide application scope.Most sea areas and inland rivers have broad application prospects in the development of water resources.

Description

Technical field: [0001] The invention belongs to the technical field of fluid machinery, and in particular relates to a water turbine with double impellers. Background technique: [0002] As a green renewable energy with abundant reserves, high energy flow density and strong predictability, the development and utilization of water resources has always attracted much attention. At present, the development of water resources is mainly oriented to two aspects. One is to dam inland rivers and lakes to increase the water head, and to convert the potential energy of water into mechanical energy through water turbines, and then further into usable electrical energy. However, the amount of engineering is large, the cost is high, and the damage to the environment is relatively large. The second is the comprehensive development and utilization of marine energy, mainly including tidal energy, wave energy, ocean current energy, seawater temperature difference energy and salinity differ...

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Problems solved by technology

However, there are still some technical problems in the current hydraulic turbines used for tidal current energy generation. For example, the starting flow rate generally exceeds 0.7m / s, and the rated power flow rate generally exceeds 2m / s. , has relatively large limitations, and is not suitable for promotion to ordinary sea areas with low tidal current velocity, and cannot maximize the development of tidal current energy resources, resulting in a large waste of energy

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