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

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.

Claims

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.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a structural schematic diagram of an energy increasing device in the present disclosure;

(2) FIG. 2 is a three-dimensional schematic diagram of the energy increasing device in the present disclosure;

(3) FIG. 3 is an installation schematic diagram of the energy increasing device in the present disclosure;

(4) FIG. 4 is a front view of the energy increasing device along the river direction in the present disclosure;

(5) FIG. 5 is a schematic diagram of the energy increasing device in the present disclosure;

(6) FIG. 6 is a top view of a plane-shaped main diversion plate in the present disclosure; and

(7) FIG. 7 is a top view of an arc-shaped main diversion plate in the present disclosure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

(8) The present disclosure is further described below in combination with the attached figures.

(9) As shown in FIG. 1 to FIG. 4, a convex type guide plate waterwheel energy increasing device with gradually dense holes in the present disclosure comprises fixed devices, a main diversion plate 1 and auxiliary diversion plates 2, an upwards convex arc structure is arranged on the top surface of the main diversion plate 1, gradually dense first through holes 3 are formed in the main diversion plate 1 from the middle to the two ends, the diameters of the first through holes 3 are gradually increased, the auxiliary diversion plates 2 are connected to the two sides of the main diversion plate 1, second through holes 4 are formed in the auxiliary diversion plates 2, fixed devices are fixed to the two sides of the auxiliary diversion plates 2, and the fixed devices are used for fixing the main diversion plate 1 and the auxiliary diversion plates 2 to the riverbed. The fixed devices comprise a base 5, a guide plate support 6 is arranged on the base 5, inserting grooves are formed in the inner side of the guide plate support 6, the outer sides of the auxiliary diversion plates 2 are fixed to the guide plate support 6 through the inserting grooves, locking sleeve holes 7 are transversely formed in the guide plate support 6, locking pins 8 are inserted from the outer sides of the locking sleeve holes 7, and the tail ends of the locking pins 8 are fixed to the outer side surfaces of the auxiliary diversion plates 2; and supports 9 are arranged on the front surface and the rear surface of the main diversion plate 1, and ground anchors 10 are arranged at the tail ends of the supports 9.

(10) As shown in FIG. 5, the implementation principle of the present disclosure is that the flow velocity in open channel flow generally presents log-law distribution along the water depth, the flow velocity at the bottom of the riverbed is low, the flow velocity on the surface of the water flow is high, the waterwheel mainly utilizes the flow velocity of the water flow to do work, through the main diversion plate with the gradually dense through holes with different heights, 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.

Embodiment I

(11) As shown in FIG. 6, the main diversion plate is of a plane structure with the same thickness or with a thin upper portion and a thick lower portion, the included angles between the main diversion plate and the riverbed as well as between the auxiliary diversion plates and the riverbed are set to be 45° to 90°, and the main diversion plate is set to be of an axisymmetric structure.

(12) The supports as auxiliary supporting are installed on the front surface and the rear surface of the main diversion plate, and ground anchors are used for anchoring the supports at the bottom of the riverbed.

(13) The base and the guide plate support are of rigid structures and are kept fixed at the bottom of the riverbed, the angle between the main diversion plate and the bottom of the riverbed can be adjusted through the supports, and large output is provided for the waterwheel under different incoming flow conditions.

Embodiment II

(14) As shown in FIG. 7, the main diversion plate is of a curved surface structure with the same thickness or with a thin upper portion and a thick lower portion, the included angles between the main diversion plate and the riverbed as well as between the auxiliary diversion plates and the riverbed are set to be 45° to 90°, and the main diversion plate is set to be of an axisymmetric structure.

(15) The supports as auxiliary supporting are installed on the front surface and the rear surface of the main diversion plate, and ground anchors are used for anchoring the supports at the bottom of the riverbed.

(16) The base and the guide plate support are of rigid structures and are kept fixed at the bottom of the riverbed, the angle between the main diversion plate and the bottom of the riverbed can be adjusted through the supports, and large output power is provided for the waterwheel under different incoming flow conditions.

Embodiment III

(17) The length L.sub.4 of the main diversion plate is 0.9-1.3 times of the width L.sub.1 of the waterwheel runner, and the height of the top of the main diversion plate is gradually reduced along the length direction to form an upwards convex arc structure. The diameter D.sub.2 of the contour line of the arc structure of the main diversion plate is 0.8L.sub.4 to 2.5L.sub.4, the distances H.sub.3 between the tops of the auxiliary diversion plates and the free liquid level are 0-0.15D.sub.1 of the height of the waterwheel runner, the heights of the auxiliary diversion plates are H.sub.2, and the distance H.sub.2 penetrating into the riverbed is suggested to be 0.2D.sub.1 to 0.6D.sub.1.

(18) The ratios of the lengths L.sub.3 of the auxiliary diversion plates to the length L.sub.4 of the main diversion plate are 0-0.4.

(19) The distance L.sub.5 between the main diversion plate and the center of the waterwheel is 1-2.5 times of the diameter of the waterwheel runner.

(20) The porosity of the main diversion plate is smaller than that of the auxiliary diversion plates, the porosity of the main diversion plate is in the range of 2% to 8%, the porosity of the main diversion plate is smaller in the middle and larger at the two ends, and the porosity of the auxiliary diversion plates is in the range of 5% to 15%.

Embodiment IV

(21) When in use, the convex type guide plate waterwheel energy increasing device with gradually dense holes is installed on the incoming flow surface of the waterwheel, and the waterwheel with the diameter of 2.9 m, the waterwheel submerging depth of 1.2 m and the waterwheel width of 11 m is taken as an example The convex type guide plate waterwheel energy increasing device with gradually dense holes is arranged at the position 4.35 m in front of the waterwheel, the length of the main diversion plate is 11 m, the radius of the arc structure contour line is 15 m, the lengths of the auxiliary diversion plates are 1 m, the porosity of the main diversion plate is 10%, and the porosity of the auxiliary diversion plates is 12%. Holes of the main plate are gradually dense from the middle to the two ends, the middle holes are the most sparse, a certain included angle is formed between the main diversion plate and the bottom of the riverbed by adjusting the supports, and the included angle between the main diversion plate and the ground of the riverbed is 60°.

(22) The foregoing descriptions are merely example implementations of the present disclosure. It should be noted that those skilled in the art may make several improvements or embellishments without departing from the principle of the present disclosure and the improvements or embellishments shall fall within the protection scope of the present disclosure.