Tapered helical auger turbine to convert hydrokinetic energy into electrical energy

A helical multi-piece auger rotatable by a moving fluid for the generation of energy comprising:

• an interior section having a first helical portion and a first central portion, the first helical portion configured to have a first radial arc extending between approximately 45 degrees and approximately 120 degrees circumferentially around the central shaft, and the first central portion having a first cylindrical opening of a first inner diameter;
• an exterior section having a second helical portion and a second central portion, the second helical portion having a second radial arc extending between approximately 30 degrees and approximately 90 degrees circumferentially around the central shaft, the exterior section having a second central portion having a second cylindrical opening of a second inner diameter;
• and
• the central shaft is configured to have a cylindrical exterior having an outer diameter, the outer diameter of the central shaft being approximately equal to or less than both the first inner diameter of the first central portion and the second inner diameter of the second central portion such that the interior and exterior sections are sized to be mounted onto the central shaft, wherein the interior and exterior sections are configured to non-overlapping interconnect with each other such that the first helical portion of the interior section and the second helical portion of the exterior section are non-overlapping and substantially flush with one another, and the interconnected interior and exterior sections form at least a portion of the helical multi-piece auger that is rotatable by a moving fluid to facilitate generation of energy from the rotation of the helical multi-piece auger.

A method of assembling a helical multi-piece auger, the method comprising:

• mounting two or more interior sections each having a first helical portion and a first central portion onto a central shaft having a cylindrical exterior having an outer diameter, the first helical portion of each of the two or more interior sections configured to have a first radial arc extending between approximately 45 degrees and approximately 180 degrees circumferentially around the central shaft, and the first central portion of each of the two or more interior sections configured to have a first cylindrical opening of a first inner diameter, the first inner diameter of the two or more interior sections being approximately equal to or greater than the outer diameter of the central shaft such that the two or more interior sections are sized to be mounted onto the central shaft;
• and
• interconnecting the central shaft and/or the helical multi-piece auger after assembly with a generator configured to generate energy from the rotation of the helical multi-piece auger caused by a moving fluid acting on the two or more interior sections mounted on the central shaft,
• wherein the two or more interior sections are configured to non-overlappingly interconnect with each other such that adjoining surfaces of adjacent ones of the two or more interior sections are substantially flush with one another to reduce turbulent flow of the moving fluid flowing over the first helical portion of the two or more interior sections, and the interconnected two or more interior sections form at least a portion of the helical multi-piece auger that is rotatable by the moving fluid to facilitate generation of energy via the interconnected generator.