The pair of conical helices can be generated in a clockwise or counterclockwise direction and as shown in Figures 6A to 7B the speed of reduction of the helical section resulting in an increase in the helical frequency can be varied to obtain an optimal reduction of the Helical section per unit length. Flowing fluid can be generated by transporting a fluid in a pipeline or by a machine such as a fluid flowing in a fluid system installed in a train, or a ship or a car.
For a low-speed fluid flow the generator connection point can be made at the highest linear speed end, that is at the larger diameter end of the rotor. The connection between the generator and each ring can be made with a simple gear or using a bearing wheel. By allowing the connection of variable speeds to the rotor in this way, a relatively constant generator speed within the variable range of generators can be achieved through a range of fluid flows. The connection can be curved, for example, a concave surface can be used to increase the surface area along the surface of the rotor blade with special shape in order to disperse the resulting hydrodynamic forces over a larger larger area and reduce internal tension, Similarly the pair of conical helices are generally aligned axially for simplicity but can be slightly misaligned in order to change the surface characteristics of the conical helices in a beneficial way.
In this embodiment, the underlying spiral that forms the design of the blades 2 is based on the Archimedean spiral where there is a linear increase in radius r with the polar coordinate 0. The resulting rotor is therefore in the shape of a truncated cone. Therefore, there remains a need for an improved device for power energy of fluid flows such as tidal flows. There may be an internal peripheral surface located around the inner edge of the blade and corresponding to the surface on which the internal conical helix is formed. The rotors shown in the figures are similar to the rotors illustrated in Figures 1, 2 and 3 here, but it will be appreciated that the two-stage rotor apparatus may comprise any pair of rotors with the helical blade shape required, as any of the alternate embodiments and rotor variations described herein.
Dolor Espalda Pecho
In summary, the preferred embodiments described herein provide a low-field complexity of the two-stage rotor apparatus that is ideal for the generation of tidal flow electricity. When the fluid exits the second stage rotor ideally has a longitudinal component only and can be returned from the main flow with minimal interference.
However, in preferred embodiments the first rotor and / or the second rotor has a blade or blades formed by a surface that extends between the internal and external conical helices, the conical helices each have a section that is reduced when the radius of The propeller increases. Because the outer ring and the inner peripheral surface in the preferred embodiments will have a diameter that spans the length of the rotor, then multiple generators can be arranged to connect to the outer ring or the inner peripheral surface in different diameters so that it runs at different speeds of rotation in relation to the speed of rotation of the rotor. For larger cross-flow deviations, the rotor housing may have a steering and suspension system and include fins, gears and flotation control devices in order to adjust its position within the flow field in order to optimize performance.
The housing can also include generators, control systems and the like. The generators can be moved along the surface by section-by-frame and frame engines. Because the generators of 13 in this embodiment are mounted on a fixed motor assembly 16 the generators 13 can be installed as rings of generators that can be engaged or disengaged as required in different locations along the longitudinal axis 4. The rings of the generators 13 can be engaged or disengaged by section-by-section motors activated by wired or wireless monitoring equipment and / or CPU such that the two-stage rotor apparatus is capable of responding to changes in the rotation speed. Figure 16 is a graph illustrating the effect of changes in the reduction ratio of the helical path resulting in a change in the rate of increase of the helical frequency Af. Figure 14 is a graph illustrating the effect of varying the ratio of the maximum external diameter C of the rotor to the external diameter mm.
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Figures 9A and 9B are perspective views of the same rotor pair with the outer ring 1 partially and completely omitted. Figures 8A and 8B are end and side views with an outer ring 1 partially omitted. Dolor brazo muscular . This ensures maximum bidirectionality on the grounds that an identical fluid flow can enter the two-stage rotor apparatus from any end with the same resulting take-off power.
Dolor Sordo Significado
However, the conic helix can alternatively be based on spirals of Euler, Fibonacci, hyperbolic, Lituus, logantmica, Theodorus or any other known spiral that has variable radius r as a function of polar coordinate 0 but also has a third variable, The length 1 which also serves as a function of the polar coordinate 0. Some curves and / or the use of nonlinear radius that increases will result in conical helices based on conical shapes with concave or convex sides, as discussed above. The generally conical body surface may be conical, truncated cone or in any other way designed as a surface of revolution that generally has a growing or decreasing radius. Other variants discussed above involve the use of different changes in section to reduce the section of conical helices. Figures 14 through 16 illustrate how these parameter changes affect rotor performance.