Hydropower equipment with graded utilization of kinetic energy of flowing water

Patent metadata

Field	Value
Publication number	US-12454937-B2
Application number	US-202318693161-A
Country	US
Kind code	B2
Filing date	Jul 12, 2023
Priority date	Jul 11, 2023
Publication date	Oct 28, 2025
Grant date	Oct 28, 2025

Abstract

The disclosure relates to a hydropower equipment with graded utilization of kinetic energy of flowing water, including three steps on the inclined surface of the triangular base from top to bottom, wherein support rods are provided on the vertical surface of each step, runner one, runner two and runner three arranged in sequence from high to low are respectively and rotatably supported on the corresponding support rods through the shaft, all the three shafts are horizontally arranged and connected to the corresponding shaft of the generator; horizontal flow channels are set inside the lower part of the triangular base for guiding water to flow toward downstream direction, and the outlets of the horizontal flow channels directly face runner three.

First claim

What is claimed is:

1 . A hydropower equipment with graded utilization of kinetic energy of flowing water, comprising a triangular base and three runners, an inclined surface of the triangular base being a segmented smooth surface, three steps being formed from top to bottom on the inclined surface, a vertical surface of each of the steps being equipped with support rods, and runner one, runner two and runner three of the three runners arranged from high to low being rotatably supported on the corresponding support rods through shafts, and the three shafts all horizontally arranged and connected to corresponding shafts of generators separately; horizontal flow channels being set inside a lower part of the triangular base for guiding water to flow toward downstream direction, and outlets of the horizontal flow channels directly face a curved part of the blades of runner three.

2 . The hydropower equipment with graded utilization of kinetic energy of flowing water according to claim 1 , wherein each of the runner one, the runner two and the runner three comprises a hub and four blades, the four blades are uniformly distributed in circumference direction with an angle between adjacent blades is 90°, and a thickness of each of the blades gradually decreases from the hub to a blade tip, the blade is composed of a straight segment and an arc segment, and the flowing water impacts a concave surface of the arc segment of the blades, driving the blades to rotate from the concave surface to a convex surface of the blades, and the runners rotate and the blades alternate to a vertical position, the flowing water continues to impact the concave surface of the blades, and the runners remain rotating.

3 . The hydropower equipment with graded utilization of kinetic energy of flowing water according to claim 2 , wherein a single blade of each of the runners run to the vertical position while a blade tip points upward, and a height of the blades is higher than that of the vertical surface of the step on which the runners is located, and the water flowing from above impacts a protruding part of the blades.

4 . The hydropower equipment with graded utilization of kinetic energy of flowing water according to claim 2 , wherein when a single blade of the runner one is oriented in the vertical position, a length of a protruding part of the single blade relative to the step equals a radius of its arc segment.

5 . The hydropower equipment with graded utilization of kinetic energy of flowing water according to claim 2 , wherein when a single blade of the runner two is oriented in the vertical position, a length of a protruding part relative to the step equals a radius of its arc segment.

6 . The hydropower equipment with graded utilization of kinetic energy of flowing water according to claim 2 , wherein when a single blade of the runner three is oriented in the vertical position, a length of a protruding part relative to the step equals the radius of its arc segment.

7 . The hydropower equipment with graded utilization of kinetic energy of flowing water according to claim 1 , wherein the runner two and the runner one have the same dimensions, and a diameter of the runner three is 1.5 times the diameter of runner two and runner one.

8 . The hydropower equipment with graded utilization of kinetic energy of flowing water according to claim 1 , wherein the runner one, the runner two and the runner three are all connected to the corresponding shafts of the generators through struts, and the shafts are coaxially connected to the corresponding shafts of the generators.

9 . The hydropower equipment with graded utilization of kinetic energy of flowing water according to claim 1 , wherein a cross section of the triangular base takes a shape of a right angled triangle, and one right angled edge of the triangular base is horizontally placed for contact with a seabed or a riverbed, and the other right angled edge is vertically placed.

10 . The hydropower equipment with graded utilization of kinetic energy of flowing water according to claim 1 , wherein two horizontal flow channels with rectangular cross sections are set inside the lower part of the triangular base, and a height of two outlets corresponds to ¾ the diameter of the runners, and axial positions of the two outlets correspond to ¼ and ¾ of the first shafts of the runners, respectively; the runner three undergoes simultaneously the impact of the stream of water from the inclined plane and two streams of water discharged from the horizontal channels.

11 . The hydropower equipment with graded utilization of kinetic energy of flowing water according to claim 1 , wherein the triangular base is fabricated through cement pouring, and the vertical surface of the steps is pre-embedded with the support rods.

Assignees

• Univ Jiangsu

Inventors

• Kang Can
• Jia Xiaoyu
• Yin Jin
• Zhang Yongchao

Classifications

• F03B17/063

  the flow engaging parts having no movement relative to the rotor during its rotation · CPC title

• Y02E10/30

  Energy from the sea, e.g. using wave energy or salinity gradient · CPC title

• Y02E10/20

  Hydro energy · CPC title

• F03B3/18

  Stator blades; Guide conduits or vanes, e.g. adjustable {(conduits in dams or the like F03B13/08; arrangement of valves F03B11/004)} · CPC title

• F03B3/121

  Blades, their form or construction · CPC title