4results about How to "Low start wind speed" patented technology

The present application relates to the technical field of mine sensor, in particular to a mine wind speed and non-contact sensing bionic flexible sensor and a preparation method thereof, which mainly solves the technical problems of existing wind speed measuring sensor, such as serious mechanical wear, high starting wind speed, limited measuring accuracy, and low integration degree of independent layout and integration with proximity detection sensor. The sensor comprises an upper electrode layer, a dielectric layer and a lower electrode layer fixedly connected in sequence from top to bottom. The upper electrode layer comprises a first substrate and flexible cilia arranged on the top surface of the first substrate. The top surface of the first substrate and the flexible cilia are collectively covered with a first conductive film. The upper electrode layer serves as a resistance test layer to measure wind speed and as a voltage test layer to realize non-contact proximity detection. The lower electrode layer comprises a second substrate and a second conductive film, which serves as an excitation electrode layer to generate an excitation electric field. The present application also provides a preparation method of the sensor. The present application integrates dual functions in a single sensor, has high integration degree, no mechanical wear and low starting wind speed.

The utility model provides a novel vertical axis ring wind wheel fan, and the fan includes wind wheel subassembly and guide rail support, wind wheel subassembly includes wind wheel frame, a plurality of inclined supports and blade, the inclined support is located on the wind wheel frame, the blade is located on the wind wheel frame, ring beam subassembly is connected with wind wheel frame subassembly rotation, and the wind wheel frame is separated from the tower column to make wind wheel subassembly lightweight and reduce the starting inertia of wind wheel frame, the blade is installed on the wind wheel frame, the blade quantity can increase at will but the weight increases not much, and the whole fan adopts the modularization design, makes the cost minimization, and the installation is convenient.

This utility model discloses a rotary gear acceleration mechanism and a vertical axis micro wind generator, including a central shaft of blades and a rotary accelerator. The rotary accelerator includes a planetary gear support, planetary gears, an internal gear ring, a sun gear, and a rotor drive shaft. The central shaft of the blades is fixed to the planetary gear support, which is connected to planetary gears. The planetary gears mesh with the internal gear ring and the sun gear. The rotor drive shaft is fixed to the sun gear. The central shaft of the blades and the rotor drive shaft are coaxially arranged. Unlike previous multi-stage parallel shaft schemes, the input and output shafts of this utility model are coaxially arranged, significantly reducing the radial dimension of the rotary accelerator, resulting in a compact structure and smaller volume. This allows for good adaptation to vertical axis micro wind generators, and also reduces energy loss and damping during transmission, leading to lower starting wind speeds and a wider range of applications.

The utility model relates to a wind power generation device, in particular to an environment-friendly wind power generation system and a wind-solar power generation system, and solves the problems that when the existing wind power generation equipment is applied to an urban environment, the noise is loud, flying birds are easily impacted, the occupied area is large, and the power generation efficiency is greatly reduced under the condition of low wind speed. The wind power generation device comprises at least one wind catching module and N hollow wind energy collecting columns, each wind catching module comprises a wind catching unit, N sets of turbine blades and M generators, N is larger than or equal to 1, and M is larger than or equal to 1 and smaller than or equal to N; the wind catching unit provides airflow for turbine blades, the N hollow wind energy collecting columns are arranged on the side wall of the wind catching unit at intervals in the vertical direction, and each hollow wind energy collecting column is provided with a bent windward side. One end of the hollow wind energy collecting column is connected and communicated with the side wall of the wind catching unit; the N sets of turbine blades are arranged corresponding to the N hollow wind energy collecting columns and rotationally installed in the wind catching unit. And the N groups of turbine blades are used for driving M power generators to rotate.