The present invention relates to a structure that employs vortex dynamic power to generate electricity, in particular to a device that applies the cylindrical cavity to create and accelerate the vortex, and applies the permeable blades to absorb the kinetic energy of the vortex to generate electricity.
For large scale HAWTs, their problems are: vulnerable blades, high center of gravity, complicated structure, difficult to manufacture, transport, install, maintain, renew, demolish and recycle, danger to birds, noisy to people. In all, short lifecycle but high cost.
For VAWTs, they cannot suffer strong wind due to vulnerable axis and blades, so that their size is limited.
The present inventor has noted U.S. Pat. No. 4,452,562A which is obvious different from the present invention as follows:
For the U.S. Pat. No. 4,452,562A, “vertically disposed wind collecting tower with spaced apart inner and outer walls and a central bore. The upper end of the tower is open while the lower end of the structure is in communication with a wind intake chamber”. The inflow in the square wind intake chamber cannot form the vortex, will not accelerate automatically as the tornado does.
For the present invention, the cylindrical cavity is single wall in structure, the top surface is fully covered except to center part, and the bottom has no wind intake chamber to communication. The inflow pass through plural fluid inlets at the side wall of the cylindrical cavity and exits through the fluid outlet at the center of the top surface of the cylindrical cavity, thus forms the whole wind field in the cylindrical cavity and accelerates as a tornado.
For the U.S. Pat. No. 4,452,562A, the turbine with axis is installed between the wind collecting tower and the wind intake chamber. The blades of the turbine are not permeable. The airflow passes by the blade once only. The blades cannot feedback kinetic energy to further accelerate the air flow.
For the present invention, plural permeable blades with driving axis are installed inside of the cylindrical cavity as no wind intake chamber. After the inflow has crashed with the permeable blades, it can maintain spiral route and keep accelerating to intensity the vortex as a tornado does.
The present inventor have simulated the air field in the cylindrical cavity of present invention with CFD, which has proved, the vortex is formed in the cylindrical cavity, lower velocity at the brim of the vortex, much higher velocity at the center of the vortex, higher pressure at the brim of the vortex, much lower pressure at the center of the vortex, the center of the vortex flows toward the outlet. All of them are coincide with the characters of cyclone or tornado. Bases above, the present inventor has created the revolutionary device to solve all problems encountered on both HAWT and VAWT.
The tornado contains high kinetic energy. The present invention applies the compact structure of cylindrical cavity to create a miniature tornado inside of it, and collects the kinetic energy of this tornado by permeable blades to produce electricity.
In order to fulfill the above requirements, the present invention has adopted following technical measures:
The present invention is a vortex dynamic power generation structure, which consists of the cylindrical cavity, the driving mechanism and the power generating mechanism. The driving mechanism is installed inside of the cylindrical cavity.
In the above-mentioned vortex dynamic power generation structure, the fluid flows into the cylindrical cavity and forms the vortex. The vortex thrusts the driving mechanism to rotate.
In the above-mentioned vortex dynamic power generation structure, the driving mechanism connects to and drives power generating mechanism.
In the above-mentioned vortex dynamic power generation structure, the cylindrical cavity has plural fluid inlet and single fluid outlet. The fluid inlets are opened on the side of the cylindrical cavity, and the fluid outlet is opened at the center of the top surface of the cylindrical cavity.
In the above-mentioned vortex dynamic power generation structure, each fluid inlet has at least one flow regulator to regulate the volume of the incoming flow.
In the above-mentioned vortex dynamic power generation structure, the external fluid flows into the cylindrical cavity tangentially through the fluid inlet. The inflow proceeds alongside the inner surface of the cylindrical cavity, then flows toward the center along a spiral route which forms the vortex. When the inflow approaches the center, it is pressed and turns toward the fluid outlet to exit.
In the above-mentioned vortex dynamic power generation structure, the driving mechanism consists of the rotating shaft which is installed at the center of the cylindrical cavity, and the blade set which is connected to the rotating shaft.
In the above-mentioned vortex dynamic power generation structure, the blade set has plural radially distributed brackets. The blades are permeable and attached to the brackets. The blades can be in net, grid, bar, or separated plane shape. The blades can also be attached to the rotating shaft directly.
In the above-mentioned vortex dynamic power generation structure, the inflow thrusts the blade sets, the blade sets drives the rotating shaft, and the rotating shaft drives the power generating mechanism to produce electricity.
In the above-mentioned vortex dynamic power generation structure, the cylindrical cavity has the heater inside to accelerate the flow.
In the above-mentioned vortex dynamic power generation structure, at least one end of the rotating shaft has a connecting part, which can be connected to the power generating mechanism. In case plural cylindrical cavities with plural driving mechanisms inside are stacked up, plural driving mechanisms \can be connected by connecting parts.
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In the first embodiment of the present invention, the cylindrical cavity 1 can be installed in the river or the sea current and apply water as inflow 41. The power generating mechanism 3 to be installed on the top of the cylindrical cavity 1, the fluid outlet 12 to be at the bottom with drainpipe toward downstream. The flow speed at inner surface of the cavity 15 is slower which causes higher pressure. The Coriolis force 53 of the inflow 41 together with the pressure gradient force 52 generate the combined vector force 54, which accelerates the inflow 41 to flow toward the axis 16 then turns downward to fluid outlet 12. The inflow 41 thrusts the blade set 22 and rotates the rotating shaft 21, which drives the rotating shaft 21 of the power generating mechanism 3 to generate electricity.
In summary, the present invention of vortex dynamic power generation structure, plural fluid inlets are opened at the vertical side of the cylindrical cavity, the fluid outlet is opened at the center of the end surface of the cylindrical cavity. The external fluid enters the cylindrical cavity tangentially through the inlet and exits through the outlet at the top surface. The driving mechanism which is inside of the cylindrical cavity consists of the rotating shaft and the permeable blade set. The inflow thrusts the plural permeable blade set and rotating shaft to turn. By applying plural permeable blades, the inflow can maintain spiral route and accelerate, also to drive the power generating mechanism to generate electricity.