Water turbine based on eccentric pendulum acceleration effect

Abstract

The application relates to the technical field of hydroelectric power generation, in particular to a water turbine based on eccentric pendulum acceleration effect, which comprises a ring-shaped water turbine mechanism, the ring-shaped water turbine mechanism comprises a ring-shaped plate and side protection plates installed on two sides of the ring-shaped plate; a water flow kinetic energy recovery mechanism, the water flow kinetic energy recovery mechanism comprises arc-shaped plates which are installed on the ring-shaped plate in a ring-shaped equidistant distribution mode and are consistent in direction, one end of each arc-shaped plate is fixedly provided with an inner buckle plate which is in a retracted fishhook shape, one end of the inner buckle plate is fixedly provided with a lip-shaped water receiving plate, one end of the lip-shaped water receiving plate is protrusively arranged towards the outer edge of the side protection plate, the arc-shaped plates, the inner buckle plates and the lip-shaped water receiving plates are combined to form an eccentric pendulum, the system is combined by multiple single pendulums to form a complete ring shape, the water bucket has large capacity and can hold the centrifugal force, the water flow stays in the water bucket for a long time and is not easy to spill out.

Description

Technical Field

[0001] This disclosure belongs to the field of hydropower technology, specifically relating to a water turbine based on the eccentric pendulum acceleration effect. Background Technology

[0002] Traditional water turbines employ a closed design, especially low-head turbines and their generator rooms, which are located near the downstream water surface. They are greatly affected by the downstream water level and mainly utilize the potential energy of water, essentially discarding the important kinetic and pressure energy in water power. Traditional hydropower generation requires a high head, and water resources with a head of less than 20 meters or ultra-low head are mostly underutilized or even unusable. Ultra-low head refers to a head of less than 5 meters. The small head results in weak water flow potential energy and insufficient conversion of kinetic energy.

[0003] Traditional water turbines are inefficient because the centrifugal force generated by the rotating water cannot be utilized. The core of a water turbine is to use the kinetic and potential energy of the water flow to drive the rotor to rotate. Centrifugal force is the outward force generated by the water flow or rotor components due to the circular motion when the rotor rotates. Therefore, centrifugal force can cause the water flow to leave the rotor prematurely, reducing energy conversion efficiency, increasing the structural load on the rotor, and accelerating component wear.

[0004] To address these issues, those skilled in the art have proposed a water turbine based on the eccentric pendulum acceleration effect. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this disclosure is to provide a water turbine based on the eccentric pendulum acceleration effect, which solves the problem that existing technologies cannot effectively utilize the kinetic energy, pressure energy, and centrifugal force of low head water.

[0006] The objective of this disclosure can be achieved through the following technical solutions:

[0007] A water turbine based on the eccentric pendulum acceleration effect includes:

[0008] A ring-shaped water turbine mechanism, comprising a ring plate and side protective plates mounted on both sides of the ring plate;

[0009] A water kinetic energy recovery mechanism includes an arc-shaped plate, which is installed on a ring-shaped plate at equal intervals and facing the same direction. An inner buckle plate is fixed to one end of the arc-shaped plate. The inner buckle plate is in the shape of an inwardly tapered fishhook. A lip-shaped water receiving plate is fixed to one end of the inner buckle plate. One end of the lip-shaped water receiving plate protrudes outward from the outer edge of the side protective plate, and the end of the lip-shaped water receiving plate is outwardly folded relative to the arc-shaped plate.

[0010] The principle and effect of the above technical solution are as follows:

[0011] By setting up an arc-shaped plate, an inner buckle plate, and a lip-shaped water receiving plate, the three components are combined to form an eccentric pendulum. The system consists of multiple single pendulums combined together to form a complete ring with the center of gravity on the ring. The longitudinal section of this ring structure is a long strip-shaped eccentric pendulum with a large volume and an internal hollow structure. The arc surfaces of two eccentric pendulums are shared to form a water container, a water bucket. The eccentric pendulum is open-shaped, and the water bucket has a large capacity and can hold centrifugal force. The water flow stays in the water bucket for a long time, and the follow-up arc on the water turbine reaches 90 degrees to more than 180 degrees, making it difficult for the water flow to spill out.

[0012] The counterclockwise rotation of the turbine, from 9 o'clock to 12 o'clock (clockwise from 12 o'clock to 3 o'clock), corresponds to the interface position between the upstream water and the inlet. The water flow is perpendicular to the tangent of the eccentric pendulum and impacts the back of the eccentric pendulum. It stays inside the eccentric pendulum for a period of time and moves a certain distance. It rotates 90 to 180 degrees or more with the turbine. After passing the lowest point of the turbine, it is discharged downward and backward under the action of gravity and centrifugal force. There is a Venturi diffuser structure at the lower rear of the turbine to facilitate the discharge of water.

[0013] The eccentric pendulum falls from its highest point to its lowest point. Around the highest point, a large amount of water is injected, and at the lowest point, the water is drained. The gravitational acceleration of the water creates a huge impact force at the end. At the same time, the centrifugal force is converted into the power to rotate other components by utilizing the deformation and friction of the curved plate. The combined force of these two forces drives the water turbine to rotate, thereby outputting power to drive the generator to generate electricity.

[0014] Preferably, it also includes a spoke support mechanism, which includes two circular plates. Multiple connecting rods are installed radially on the outer walls of the two circular plates. The other end of the connecting rods is installed on the inner wall of the annular plate. Reinforcing ribs are provided on the outer side of the circular plates and are installed on the connecting rods.

[0015] Preferably, it further includes a kinetic energy conversion mechanism, which includes a connecting shaft and two bearing seats. The two bearing seats are mounted on the outer walls of the two circular plates, and the connecting shaft is mounted on the inner circumferential wall of the bearing seats. One end of the connecting shaft is connected to a gearbox via a coupling, and one end of the gearbox is connected to a generator via a coupling.

[0016] Preferably, the annular plate and the side protective plate form an annular space, which is divided into multiple open cavities by the arc-shaped plate.

[0017] Preferably, the angle between the straight line formed by connecting the two endpoints of the arc-shaped plate and the ray formed by connecting the center of the arc-shaped plate and the annular plate is sixty degrees.

[0018] Preferably, multiple flow guide baffles are fixed on the outer wall of the back of the arc-shaped plate near the tail and on the outer wall of the annular plate.

[0019] Preferably, a baffle is fixed obliquely on the inner wall of the front side of the arc-shaped plate.

[0020] Preferably, the angle between the baffle and the inner wall of the arc-shaped plate is between 35° and 55°.

[0021] The explanations of the nouns, conjunctions, or adjectives used in the above technical solutions are as follows:

[0022] A fixed connection refers to a connection in which parts or components are fixed in place and there is no relative movement between them;

[0023] A rotating connection is a connection between parts that allows the parts to rotate relative to each other.

[0024] Threaded connections are a type of detachable fixed connection with advantages such as simple structure, reliable connection, and convenient assembly and disassembly. They are widely used in mechanical engineering and connection structure fields.

[0025] A sliding connection is a connection between parts that allows the parts to slide against each other.

[0026] The beneficial effects of this disclosure are:

[0027] By setting up an arc-shaped plate, an inner buckle plate, and a lip-shaped water-receiving plate, the three components are combined to form the outer contour of an eccentric pendulum. The system consists of multiple single pendulums combined together to form a complete ring. When the centrifugal force has an angle with the direction of motion (tangential) of the eccentric pendulum, it will decompose into a tangential component force. This component force can directly change the speed of the pendulum (accelerate or decelerate), becoming a usable power or resistance. By making the tangential component force of the centrifugal force follow the direction of motion of the pendulum, it can assist in acceleration.

[0028] By setting baffles and flow guides, the baffles form an acute angle of about 45 degrees with the arc of the eccentric pendulum, which increases the friction without obstructing the outflow of water. The flow guides the water flow to the force-bearing surface of the eccentric pendulum, allowing water to be stored inside the eccentric pendulum. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this disclosure;

[0031] Figure 2This is a schematic diagram of the internal structure of the annular water turbine mechanism according to an embodiment of the present disclosure;

[0032] Figure 3 yes Figure 2 A schematic diagram of the front sectional view of the structure;

[0033] Figure 4 This is a schematic diagram of the structure of the water kinetic energy recovery mechanism according to an embodiment of the present disclosure;

[0034] Figure 5 This is a schematic diagram of the internal space of two adjacent arc-shaped plates in an embodiment of this disclosure;

[0035] Figure 6 This is a schematic diagram of the structure of the water turbine and the ramp surface according to an embodiment of the present disclosure.

[0036] In the diagram: 1. Annular water turbine mechanism; 101. Annular plate; 102. Side protection plate; 2. Water kinetic energy recovery mechanism; 201. Arc plate; 202. Inner buckle plate; 203. Lip-shaped water receiving plate; 204. Baffle; 205. Flow guide plate; 3. Wheel spoke support mechanism; 301. Connecting rod; 302. Reinforcing rib; 303. Circular plate; 4. Kinetic energy conversion mechanism; 401. Generator; 402. Gearbox; 403. Bearing seat; 404. Connecting shaft. Detailed Implementation

[0037] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0038] Those skilled in the art will understand that the expressions relating to direction are used herein for the sake of descriptive convenience only, and are not intended to impose an absolute limitation on the direction of the novel pin-disc friction pair device.

[0039] Example 1

[0040] Please refer to Figures 1 to 4 A water turbine based on the eccentric pendulum acceleration effect, comprising:

[0041] The annular water turbine mechanism 1 includes an annular plate 101 and side protective plates 102 installed on both sides of the annular plate 101.

[0042] The water kinetic energy recovery mechanism 2 includes an arc-shaped plate 201, which is installed on an annular plate 101 in a ring-shaped manner with equal spacing and facing the same direction. An inner buckle plate 202 is fixed to one end of the arc-shaped plate 201. The inner buckle plate 202 is in the shape of an inwardly tapered fishhook. A lip-shaped water receiving plate 203 is fixed to one end of the inner buckle plate 202. One end of the lip-shaped water receiving plate 203 protrudes outward from the outer edge of the side protection plate 102, and the end of the lip-shaped water receiving plate 203 is outwardly folded relative to the arc-shaped plate 201.

[0043] The arc-shaped plate 201, the inner buckle plate 202, and the lip-shaped water-receiving plate 203 combine to form the outer contour of an eccentric pendulum. This system consists of multiple single pendulums combined to form a complete ring, with the center of gravity on the ring. The longitudinal section of this ring structure is a long, hollow, strip-shaped eccentric pendulum with a large volume. The arc-shaped surfaces of two eccentric pendulums are shared, forming a water-holding container, the eccentric pendulum, which is open-shaped. The water-holding container has a large capacity and can withstand centrifugal force, allowing the water to remain in the container for a long time. The follow-up arc on the turbine reaches 90 to over 180 degrees. The water flow is not easily spilled. The counterclockwise direction of the water turbine, from 9 o'clock to 12 o'clock (clockwise direction, from 12 o'clock to 3 o'clock), corresponds to the interface position of the upstream water and the inlet. The water flow is perpendicular to the tangent of the eccentric pendulum and impacts the back of the eccentric pendulum. It stays inside the eccentric pendulum for a period of time and moves a certain distance. It rotates 90 to 180 degrees or more with the water turbine. After passing the lowest point of the water turbine, it is discharged downward and backward under the action of gravity and centrifugal force. There is a Venturi diffuser structure at the lower rear of the water turbine to facilitate the discharge of water.

[0044] like Figure 4 As shown, the endpoint of the annular plate 101 near the circle is designated as B, the endpoint of the straight line connecting it to the circle and contacting the outer edge of the annular plate 101 is designated as E, the point of the arc plate 201 away from endpoint B is designated as A, the position of the inner buckle plate 202 away from endpoint A is designated as C, the endpoint of the lip-shaped water receiving plate 203 away from point C is designated as D, the angle between AB and EB is 60 degrees, and the length of BE is half of ED.

[0045] Specifically, it also includes a spoke support mechanism 3, which includes two circular plates 303. Multiple connecting rods 301 are installed radially on the outer walls of the two circular plates 303. The other end of the connecting rods 301 is installed on the inner wall of the annular plate 101. Reinforcing ribs 302 are provided on the outer side of the circular plates 303 and are installed on the connecting rods 301.

[0046] The overall strength of the turbine is enhanced by reinforcing ribs 302, thus extending the turbine's service life.

[0047] Furthermore, it also includes a kinetic energy conversion mechanism 4, which includes a connecting shaft 404 and two bearing seats 403. The two bearing seats 403 are mounted on the outer walls of two circular plates 303, and the connecting shaft 404 is mounted on the inner circumference of the bearing seats 403. One end of the connecting shaft 404 is connected to a gearbox 402 via a coupling, and one end of the gearbox 402 is connected to a generator 401 via a coupling.

[0048] When the water turbine receives the water flow and forms a stable rotation, the energy generated by the water flow impacting and driving the water turbine to rotate drives the connecting shaft 404 to rotate. Through the coupling and gearbox 402, it drives the generator 401 to work, and finally outputs electricity.

[0049] It should be noted that the annular plate 101 and the side protective plate 102 form an annular space, which is divided into multiple open cavities by the arc-shaped plate 201.

[0050] The open cavity is the eccentric pendulum. After the water flows down, it enters the eccentric pendulum for storage, which directs the impact force to the outer ring and increases the lever arm of the impact force. The inside of the eccentric pendulum is a water storage area that accumulates gravity. When the water flows away under the action of centrifugal force and gravity, it will not hinder the water flow out.

[0051] Furthermore, the angle between the straight line formed by connecting the two ends of the arc plate 201 and the ray formed by connecting the center of the arc plate 201 and the annular plate 101 is sixty degrees.

[0052] The open-type cavity has a large volume, a high outer edge, and a hook-shaped top to intercept the water flow. Its tangential angle is 60 degrees. Each water bucket is filled to about two-thirds full each time, intentionally not completely full. The water flow will have a secondary impact in the open-type cavity. The water bucket has a large capacity and can withstand centrifugal force. The water flow stays in the water bucket for a long time. The follow-through arc on the water turbine reaches 90 degrees to over 180 degrees, making it difficult for the water to spill out.

[0053] When the centrifugal force makes an angle with the direction of the pendulum's motion (tangential), it will decompose into a tangential component force. This component force can directly change the speed of the pendulum (accelerate or decelerate), becoming a usable driving force or resistance.

[0054] Assuming the eccentric pendulum has a mass m = 1 kg, an instantaneous angular velocity ω = 2 rad / s, and a radius r = 1 m, the following breakdown is based on specific angles: When the angle between the centrifugal force and the tangent direction of the inner wall of the arc plate 201 is 30°, the tangential component Ftangent = F·sin30° = 4 × 0.5 = 2 N, providing the eccentric pendulum with a tangential acceleration of 2 m / s², resulting in a significant acceleration effect; when the angle between the centrifugal force and the tangent direction of the inner wall of the arc plate 201 is 60°, the tangential component Ftangent = 4 × sin60° ≈ 3.46 N, and the tangential acceleration ≈ 3.46 m / s², resulting in an even stronger acceleration effect; when the angle between the centrifugal force and the tangent direction of the inner wall of the arc plate 201 is 120°, the tangential component Ftangent = 4 × sin120° ≈ 3.46 N, becoming a decelerating force with an acceleration of -3.46 m / s².

[0055] Therefore, when the angle between the centrifugal force and the direction tangent to the inner wall surface of the arc plate 201 is 60 degrees, the centrifugal force can be used to assist in ensuring the rapid rotation of the turbine and subsequent power generation.

[0056] The following description, in conjunction with the accompanying drawings and embodiments, provides a further explanation of a water turbine based on the eccentric pendulum acceleration effect provided by the present invention.

[0057] First, the device is fixed at a low-head or ultra-low-head water flow location. The counterclockwise rotation direction of the turbine is from 9 o'clock to 12 o'clock (clockwise is from 12 o'clock to 3 o'clock), corresponding to the upstream water inflow and outflow positions. The water flows along the lip-shaped water receiving plate 203 and enters the interior of the arc-shaped plate 201. Under the obstruction of the inner buckle plate 202, the water is stored in the open cavity. The water flow stays in the open cavity and rotates 90 to 180 degrees or more with the turbine. After passing the lowest point of the turbine, it is discharged downward and backward under the action of gravity and centrifugal force. There is a Venturi diffuser structure at the lower rear of the turbine to facilitate the water flow.

[0058] Example 2

[0059] As an optional embodiment, please refer to Figure 1 and Figure 5 Multiple flow guide baffles 205 are fixed on the outer wall of the back of the arc plate 201 near the tail and on the outer wall of the annular plate 101.

[0060] Specifically, a baffle 204 is fixed obliquely on the inner wall of the front side of the arc plate 201.

[0061] Specifically, the included angle between the baffle 204 and the inner wall of the arc-shaped plate 201 is between 35° and 55°.

[0062] The baffle 204 and the arc plate 201 form an acute angle of about 45 degrees, which increases the friction without obstructing the outflow of water. The guide baffle 205 guides the water flow to the force-bearing surface of the arc plate 201, so that water can be stored inside the open cavity.

[0063] like Figure 6 As shown, a sloping surface is set in the water flow below the water turbine. The slope of the sloping surface conforms to the brachistochrone line. The sloping surface is located in the water channel near the bottom of the water turbine. The distance between the slope of the sloping surface and the outer edge of the water turbine is greater than 3 cm. The height from the high point on the left side of the sloping surface to the horizontal level of the water flow in the water channel is greater than 50 cm. The low point on the right side of the sloping surface is located inside the water flow in the water channel. After the water is discharged from the water turbine, it flows rapidly into the water channel within the sloping surface, changing the direction of the water flow from vertically downward to horizontally backward. The water flow still has a certain speed after leaving the water turbine. Using this speed and the gravity of the water flow, under the action of the brachistochrone line slope, the water flow is quickly rushed to the rear of the water channel, while also avoiding affecting the rotation of the water turbine itself.

[0064] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0065] The foregoing has shown and described the basic principles, main features, and advantages of this disclosure. Those skilled in the art should understand that this disclosure is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this disclosure. Various changes and modifications can be made to this disclosure without departing from its spirit and scope, and all such changes and modifications fall within the scope of this disclosure as claimed.

Claims

1. A water turbine based on the eccentric pendulum acceleration effect, characterized in that, include: The annular water turbine mechanism (1) includes an annular plate (101) and side guard plates (102) installed on both sides of the annular plate (101). Water kinetic energy recovery mechanism (2), the water kinetic energy recovery mechanism (2) includes an arc plate (201), the arc plate (201) is installed on the annular plate (101) in a ring with equal spacing and facing the same direction, one end of the arc plate (201) is fixed with an inner buckle plate (202), the inner buckle plate (202) is in the shape of an inwardly tapered fishhook, one end of the inner buckle plate (202) is fixed with a lip-shaped water receiving plate (203), one end of the lip-shaped water receiving plate (203) protrudes outward from the outer edge of the side protection plate (102), and the end of the lip-shaped water receiving plate (203) is outwardly folded relative to the arc plate (201).

2. A water turbine based on the eccentric pendulum acceleration effect as described in claim 1, characterized in that: It also includes a spoke support mechanism (3), which includes two circular plates (303). Multiple connecting rods (301) are installed radially on the outer walls of the two circular plates (303). The other end of the connecting rod (301) is installed on the inner wall of the annular plate (101). A reinforcing rib (302) is provided on the outer side of the circular plate (303), and the reinforcing rib (302) is installed on the connecting rod (301).

3. A water turbine based on the eccentric pendulum acceleration effect as described in claim 2, characterized in that: It also includes a kinetic energy conversion mechanism (4), which includes a connecting shaft (404) and two bearing seats (403). The two bearing seats (403) are mounted on the outer walls of the two circular plates (303), and the connecting shaft (404) is mounted on the inner circumference of the bearing seats (403). One end of the connecting shaft (404) is connected to a gearbox (402) via a coupling, and one end of the gearbox (402) is connected to a generator (401) via a coupling.

4. A water turbine based on the eccentric pendulum acceleration effect as described in claim 1, characterized in that: The annular plate (101) and the side protective plate (102) form an annular space, which is divided into multiple open cavities by the arc plate (201).

5. A water turbine based on the eccentric pendulum acceleration effect as described in claim 1, characterized in that: The angle between the straight line formed by connecting the two endpoints of the arc plate (201) and the ray formed by connecting the center of the arc plate (201) and the annular plate (101) is sixty degrees.

6. A water turbine based on the eccentric pendulum acceleration effect as described in claim 1, characterized in that: Multiple flow guide baffles (205) are fixed on the outer wall of the back side of the arc-shaped plate (201) near the tail and on the outer wall of the annular plate (101).

7. A water turbine based on the eccentric pendulum acceleration effect as described in claim 1, characterized in that: A baffle (204) is obliquely fixed on the inner wall of the front side of the arc plate (201).

8. A water turbine based on the eccentric pendulum acceleration effect as described in claim 7, characterized in that: The angle between the baffle (204) and the inner wall of the arc plate (201) is between 35° and 55°.

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