阅读说明：本技术 一种低流速水力发电机 (Low-flow-speed hydroelectric generator ) 是由 李亦博 李宏春 李锋 于 2018-11-21 设计创作，主要内容包括：一种低流速水力发电机,属于电力设备技术领域。该水力发电机含有承重体,与所述承重体连接的水力转轮,经所述水力转轮直接或间接驱动的发电机；所述承重体与所述水力转轮之间构成轴向约束的水平转动副；所述承重体或所述水力转轮含有浮力装置,所述浮力装置能产生消减所述承重体或所述水力转轮自重的浮力,因而提高发电效率,省去现有潮汐能发电中建堤造库的成本。(A low-flow-speed hydroelectric generator belongs to the technical field of power equipment. The hydroelectric generator comprises a bearing body, a hydroelectric runner connected with the bearing body and a generator directly or indirectly driven by the hydroelectric runner; an axially restrained horizontal rotating pair is formed between the bearing body and the hydraulic rotating wheel; the bearing body or the hydraulic runner contains a buoyancy device which can generate buoyancy for reducing the self weight of the bearing body or the hydraulic runner, thereby improving the power generation efficiency and saving the cost of building a bank in the conventional tidal power generation.)

A low flow velocity hydroelectric generator comprises a bearing body, a hydraulic runner connected with the bearing body, and a generator directly or indirectly driven by the hydraulic runner; an axially restrained horizontal rotating pair is formed between the bearing body and the hydraulic rotating wheel; the method is characterized in that: the bearing body or the hydraulic runner comprises a buoyancy device for reducing the self weight of the bearing body or the hydraulic runner.

The low flow rate hydroelectric generator of claim 2, wherein: the buoyancy device is a component with a sealed cavity inside or an external air chamber.

The low flow rate hydroelectric generator of claim 1, wherein: the hydraulic rotating wheel comprises a wheel frame connected with the bearing body and a plurality of blades uniformly distributed on the periphery of the wheel frame, wherein the wheel frame comprises a main shaft and a cantilever, one end of the cantilever is directly or indirectly connected with the main shaft, and the other end of the cantilever is directly or indirectly connected with the blades.

The low flow rate hydroelectric generator of claim 3, wherein: the blade is internally provided with a sealed cavity, and the cavity of the blade is in an integral or spaced shape.

The low flow rate hydroelectric generator of claim 3, wherein: the structure of the main shaft comprises one or a combination of an internal sealed cavity and an external air chamber.

The low flow rate hydroelectric generator of claim 5, wherein: when a sealed cavity is provided in the spindle, the cavity is cylindrical or conical in shape.

The low flow rate hydroelectric generator of claim 5, wherein: when the structure of the main shaft contains an external gas cabin, one end of the cantilever is fixedly connected with the main shaft or the gas cabin; the gas cabin is distributed on the periphery or the lower section or the upper section of the main shaft, and the shape of the gas cabin is cylindrical, conical or spherical.

The low flow rate hydroelectric generator of claim 3, wherein: the cantilever is internally provided with a sealed cavity structure or an air chamber connected with the periphery of the cantilever, and the radial section of the cantilever or the radial section of the peripheral air chamber is in an oval shape or a rhombic shape or a rounded rhombic shape.

The low flow rate hydroelectric generator of claim 3, wherein: the bearing body is arranged in a mode of being placed under water, floating on the water surface and standing on the water bottom to extend out of the water surface; when the bearing body is arranged under water, the bearing body comprises a base positioned on the water bottom and a tower fixedly connected to the base, the top end of the tower is connected with the wheel frame, and the wheel frame directly drives the generator or drives the generator through a gearbox; when the bearing body floats on the water surface, the bearing body comprises a plurality of buoys and a frame fixedly connected on the buoys, the lower surface of the frame is connected with the wheel carrier, the upper surface of the frame is provided with a generator, and a main shaft of the wheel carrier penetrates through the frame to directly drive the generator or drive the generator through a gear box; when the bearing body stands on the water bottom and stretches out of the water surface, the bearing body comprises a plurality of support columns standing in the water and a frame fixedly connected with the position of the support columns stretching out of the water surface, the lower surface of the frame is connected with the wheel carrier, the generator is arranged on the frame, and the main shaft of the wheel carrier is penetrated through the frame to directly drive the generator or drive the generator through the gear box.

The low flow rate hydroelectric generator of claim 9, wherein: two to five blades are uniformly distributed around the wheel frame to respectively form a two-blade rotating wheel, a three-blade rotating wheel, a four-blade rotating wheel and a five-blade rotating wheel; the vanes are low-flow-rate high-efficiency FW vanes.

The low flow rate hydroelectric generator of claim 9, wherein: the wheel carrier is of a multilayer structure, the cantilevers of the wheel carrier are arranged in a layered mode, each blade is provided with a segment, the number of the segments corresponds to the number of the layers of the cantilever in the layered mode, and each segment of the blade is arranged between the cantilevers which are adjacent up and down.

The low flow rate hydroelectric generator of claim 9, wherein: when the bearing bodies float on the water surface, the bearing bodies are connected with each other through a frame to form a floating generator group; when the load-bearing body comprises a frame, a wind power generator is arranged on the frame, and the wind power generator and the hydroelectric generator share one generator through a clutch.

The low flow rate hydroelectric generator of claim 9, wherein: the load bearing body also comprises the finished water-borne load.