Convex type guide plate waterwheel energy increasing device with gradually dense holes

Patent metadata

Field	Value
Publication number	US-11686283-B2
Application number	US-202117358045-A
Country	US
Kind code	B2
Filing date	Jun 25, 2021
Priority date	Jul 1, 2020
Publication date	Jun 27, 2023
Grant date	Jun 27, 2023

Abstract

A convex type guide plate waterwheel energy increasing device with gradually dense holes is provided. The convex type guide plate waterwheel energy increasing device comprises fixed devices, a main diversion plate and auxiliary diversion plates, wherein an upwards convex arc structure is arranged on the top surface of the main diversion plate, gradually dense first through holes are formed in the main diversion plate from the middle to the two ends, the diameters of the first through holes are gradually increased, the auxiliary diversion plates are connected to the two sides of the main diversion plate, second through holes are formed in the auxiliary diversion plates, fixed devices are fixed to the two sides of the auxiliary diversion plates, and the fixed devices are used for fixing the main diversion plate and the auxiliary diversion plates to the riverbed. Through the convex type main diversion plate with the gradual dense holes with different heights, the device adapts to the condition that the distance between the waterwheel and the bottom of the riverbed is different along with the change of the phase angle, kinetic energy of low-velocity air at the bottom of the riverbed is conveyed to the impeller area of the waterwheel, the effective acceleration area in the river channel is large, the average velocity of water flow in the impeller area of the waterwheel is increased, and the output power of the unit is improved.

First claim

What is claimed is:

1. A convex guide plate for a waterwheel energy device, comprising:
fixed devices,
a main diversion plate and auxiliary diversion plates attached to two opposed ends of the main diversion plate, an upwards convex arc structure is arranged on a top surface of the main diversion plate,
first through holes of various diameters disposed on the main diversion plate such that a porosity of a middle of the main diversion plate is less than porosities of the two ends of the main diversion plate,
second through holes are formed in the auxiliary diversion plates,
the fixed devices are fixed to two sides of the auxiliary diversion plates, and the fixed devices are used for fixing the main diversion plate and the auxiliary diversion plates to a riverbed.

2. The convex guide plate according to claim 1 , wherein heights of the auxiliary diversion plates are equal to heights of the two ends of the main diversion plate, the main diversion plate is axisymmetric, and the main diversion plate is a planar structure with a uniform thickness or with a thin upper portion and a thick lower portion or a curved surface structure with a uniform thickness or with a thin upper portion and a thick lower portion.

3. The convex guide plate according to claim 1 , wherein the fixed devices are capable of orienting the main diversion plate and the auxiliary diversion plates to be inclined at an angle of 45° to 90° with respect to the horizontal.

4. The convex guide plate according to claim 1 , wherein a diameter of the contour line of the arc structure on the top surface of the main diversion plate is 0.8-2.5 times a length of the main diversion plate.

5. The convex guide plate according to claim 1 , wherein ratios of lengths of the auxiliary diversion plates to a length of the main diversion plate are less than or equal to 0.4.

6. The convex guide plate according to claim 1 , wherein the fixed devices comprise a base, a guide plate support is arranged on the base, inserting grooves are formed in an inner side of the guide plate support, outer sides of the auxiliary diversion plates are fixed to the guide plate support through the inserting grooves, locking sleeve holes are transversely formed in the guide plate support, locking pins are inserted from outer sides of the locking sleeve holes, and tail ends of the locking pins are fixed to outer side surfaces of the auxiliary diversion plates; and ground supports are arranged on a front surface and a rear surface of the main diversion plate, and ground anchors are arranged at tail ends of the ground supports.

7. The convex guide plate according to claim 1 , wherein the porosities of the main diversion plate are in the range of 2% to 8%, and porosities of the auxiliary diversion plates are in the range of 5% to 15%.

8. The convex guide plate according to claim 1 , wherein the first through holes and the second through holes are triangular, circular or oval in shape.

9. An energy conversion system for placing on a riverbed comprising:
the convex guide plate according to claim 1 ; and
a waterwheel spaced from the convex guide plate.

10. The energy conversion system of claim 9 , wherein a length of the main diversion plate is 0.9-1.3 times a width of a runner of the waterwheel.

11. The energy conversion system of claim 9 , wherein a distance between the main diversion plate and a center of the waterwheel is 1-2.5 times a diameter of a runner of the waterwheel.

Assignees

• Univ Hohai

Inventors

• Yang Chunxia
• Zhang Zhen
• Hu Yan
• Zhao Mengshang
• Ding Yan
• Liu Huiwen

Classifications

• F03B11/00 Primary

  Parts or details not provided for in, or of interest apart from, the preceding groups (controlling F03B15/00), {e.g. wear-protection couplings, between turbine and generator} · CPC title

• F03B17/062

  with rotation axis substantially at right angle to flow direction · CPC title

• E02B9/00 Primary

  Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same · CPC title

• F03B17/063 Primary

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

• Y02E10/20

  Hydro energy · CPC title