Floating counter-rotating vortex-eliminating device for pump station, and pump station

Patent metadata

Field	Value
Publication number	US-12385504-B2
Application number	US-202318700711-A
Country	US
Kind code	B2
Filing date	Oct 30, 2023
Priority date	Jun 12, 2023
Publication date	Aug 12, 2025
Grant date	Aug 12, 2025

Abstract

A floating counter-rotating vortex-eliminating device for a pump station and the pump station; the floating counter-rotating vortex-eliminating device for the pump station includes a floating driving disc, a counter-rotating gear box, a reverse-rotating disc, a plane bearing, an elastic element, and a balance weight; the floating driving disc floats on a liquid surface near a water suction end of the pump station and is driven to rotate by power generated by a vortex; the floating driving disc is connected to the reverse-rotating disc through the counter-rotating gear box, such that the reverse-rotating disc and the floating driving disc have different rotating directions; the plane bearing is mounted at a bottom of the reverse-rotating disc, and the plane bearing is connected to the balance weight through the elastic element to prevent inclination.

First claim

The invention claimed is:

1. A floating counter-rotating vortex-eliminating device for a pump station, comprising:
a floating driving disc, a counter-rotating gear box, a reverse-rotating disc, a plane bearing, an elastic element, and a balance weight; the floating driving disc floats on a liquid water surface near a water suction end of the pump station and is driven to rotate by power generated by a vortex of the water surface; the floating driving disc is connected to the reverse-rotating disc through the counter-rotating gear box, such that the reverse-rotating disc and the floating driving disc have different rotating directions; the plane bearing is mounted at a bottom of the reverse-rotating disc, the plane bearing is connected to the balance weight through the elastic element to prevent inclination;
the floating driving disc comprises a plurality of driving blades, a buoyancy disc, a driving disc hub, a driving shaft, and a driving bevel gear; the plurality of driving blades are uniformly distributed between the buoyancy disc and the driving disc hub, an upper end of the driving shaft is connected to the driving disc hub, a lower end of the driving shaft is connected to the driving bevel gear, the power generated by the vortex is applied to the plurality of driving blades, such that the floating driving disc and the vortex have a same rotating direction.

2. The floating counter-rotating vortex-eliminating device for the pump station according to claim 1 , wherein sections of the plurality of driving blades have a shape of a quarter of a ring, the plurality of driving blades are radially distributed and have a same thickness, inlets and outlets of the plurality of driving blades are chamfered for transition, and a number of the plurality of driving blades is 3-6.

3. The floating counter-rotating vortex-eliminating device for the pump station according to claim 1 , wherein the buoyancy disc has an outer contour of a ring stretching body, an inner diameter of the buoyancy disc is R 1 , an outer diameter of the buoyancy disc is R 2 , a height of the buoyancy disc is H, a cavity is formed in the buoyancy disc, a volume of the buoyancy disc meets the following condition:
k ρπ( R 2 2 −R 1 2 ) H≥M

wherein, ρ is density of water; M is total mass of the floating counter-rotating vortex-eliminating device for the pump station; and k is a buoyancy factor.

4. The floating counter-rotating vortex-eliminating device for the pump station according to claim 1 , wherein the reverse-rotating disc comprises a reverse-rotating blade, a reverse-rotating disc hub, a reverse-rotating shaft, and a reverse-rotating bevel gear; an inner edge of the reverse-rotating blade is connected to the reverse-rotating disc hub; an upper end of the reverse-rotating shaft is connected to the counter-rotating gear box, a lower end of the reverse-rotating shaft is connected to the reverse-rotating disc hub, the reverse-rotating disc and the vortex have opposite rotating directions.

5. The floating counter-rotating vortex-eliminating device for the pump station according to claim 4 , wherein a ratio of an outer diameter of the reverse-rotating blade to an outer diameter of the plurality of driving blades is 0.6-0.8; a cross section of the reverse-rotating blade is rectangular, a height of the reverse-rotating blade is h, a width of the reverse-rotating blade is w, the following conditions are met: h≥H and h≥2w.

6. The floating counter-rotating vortex-eliminating device for the pump station according to claim 4 , wherein two transmission bevel gears are coaxially mounted in the counter-rotating gear box in a horizontal direction, the driving bevel gear and the reverse-rotating bevel gear are coaxially mounted in the counter-rotating gear box in a vertical direction; the two transmission bevel gears are meshed with the driving bevel gear; the two transmission bevel gears are meshed with the reverse-rotating bevel gear; the driving bevel gear drives the reverse-rotating bevel gear to rotate reversely through the two transmission bevel gears.

7. The floating counter-rotating vortex-eliminating device for the pump station according to claim 1 , wherein mass m of the balance weight meets the following condition: m>0.3M, M is total mass of the floating counter-rotating vortex-eliminating device for the pump station.

8. The floating counter-rotating vortex-eliminating device for the pump station according to claim 1 , wherein a traction rope is connected between the water suction end of the pump station and the balance weight; a connecting point of the traction rope and the water suction end of the pump station is located in a middle between the liquid water surface and an inlet of the water suction end; a length L of the traction rope meets the following condition: (T−t)≥L≥0.8 (T−t);
wherein, T−t is a vertical distance between the liquid water surface and the inlet of the water suction end.

9. A pump station, comprising:
at least two floating counter-rotating vortex-eliminating devices for the pump station according to claim 1 , a first floating counter-rotating vortex-eliminating device of the at least two floating counter-rotating vortex-eliminating devices for the pump station is located on one side of the liquid water surface near the water suction end of the pump station; a second floating counter-rotating vortex-eliminating device of the at least two floating counter-rotating vortex-eliminating devices for the pump station is located on an other side of the liquid water surface near the water suction end of the pump station; a driving direction of the driving blades of the first floating counter-rotating vortex-eliminating device for the pump station is different from a driving direction of the driving blades of the second floating counter-rotating vortex-eliminating device for the pump station; the first floating counter-rotating vortex-eliminating device for the pump station is configured to eliminate a vortex of the liquid water surface in a clockwise direction; the second floating counter-rotating vortex-eliminating device for the pump station is configured to eliminate a vortex of the liquid water surface in an anticlockwise direction.

Assignees

• Univ Jiangsu

Inventors

• Pan Qiang
• Zhang Desheng
• Shi Weidong

Classifications

• F04D25/04

  the pump being fluid-driven {(pumps driven by exhaust gases F02B37/00, F02B39/00; turbochargers F02C6/12)} · CPC title

• F04D29/688

  especially adapted for liquid pumps · CPC title

• F04D29/669 Primary

  especially adapted for liquid pumps (F04D29/18 takes precedence) · CPC title