Stretchable blade hydroelectric generation device with self-adaptive water flow intensity

Abstract

The invention belongs to the field of hydroelectric generation, and particularly relates to a water flow intensity self-adaptive telescopic blade hydroelectric generation device which comprises a concrete dam poured at the natural fall of a river channel, a water inlet frame faces the upstream and slightly inclines upwards, a torsional spring is fixedly connected between a round block and a connecting block, and two light arc-shaped plates are symmetrical front and back. The lower end face of the adjusting plate is fixedly connected with one end of a string, the other end of the string is fixedly connected with a pendulum bob, when water flow impacts the pendulum bob, the light arc-shaped plate is driven to rotate around the rotating shaft, the larger the water flow is, the smaller the unfolding angle of the light arc-shaped plate is, power generation overload in the wet season is avoided, and after unfolding in the dry season, more water flows back into the water inlet frame for power generation. The machine shaft is fixedly connected with a plurality of coupling blades distributed in a circumferential array mode, a machine frame is arranged on the lower side of the marine riser, water flow flowing into the marine riser is guided to the coupling blades through a second spiral frame, the coupling blades are transversely impacted, and the machine shaft is rotated more efficiently.

Description

Technical Field

[0001] The present invention relates to the field of hydropower generation, and specifically to a telescopic blade hydropower generation device with self-adaptive water flow intensity. Background Technique

[0002] In hydropower generation, the natural height difference of river channels is often used for hydropower generation. Due to the existence of flood seasons and dry seasons, there is sufficient water source during the flood season, but excessive water flow is likely to cause the power generation device to be overloaded and current limiting is required. During the dry season, the water source is insufficient and diversion is needed. However, traditional power control diversion plates are prone to damage and energy-consuming. At the same time, the turbine blades are too long during the dry season, resulting in low rotation efficiency of the blades and even shutdown. Most of the existing turbine blades can only change the angle, so a telescopic blade hydropower generation device with self-adaptive water flow intensity is needed to replace the existing hydropower generation device. Summary of the Invention

[0003] The purpose of the present invention is to provide a telescopic blade hydropower generation device with self-adaptive water flow intensity to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A telescopic blade hydropower generation device with self-adaptive water flow intensity, including a concrete dam poured at the natural drop of the river channel. The concrete dam is fixedly connected with a power generation frame and a water inlet frame. The water inlet frame is fixedly connected with the power generation frame. The power generation frame is provided with a water inlet hole communicating with the water inlet frame. The water inlet frame faces upstream and is slightly inclined upward. The water inlet frame is fixedly connected with two symmetrically arranged connecting blocks front and back. The connecting block is rotatably connected with a rotating shaft. The upper end surface of the rotating shaft is fixedly connected with a round block. A torsion spring is fixedly connected between the round block and the connecting block. Each connecting block is fixedly connected with a lightweight arc-shaped plate. The two lightweight arc-shaped plates are symmetrically arranged front and back. Each lightweight arc-shaped plate is fixedly connected with a connecting rod. The connecting rod is fixedly connected with an adjusting plate by screws. One end of a thin rope is fixedly connected to the lower end surface of the adjusting plate, and the other end is fixedly connected with a pendulum. Thus, when the pendulum is impacted by the water flow, it drives the lightweight arc-shaped plate to rotate around the rotating shaft. The greater the water flow, the smaller the unfolding angle of the lightweight arc-shaped plate. Then, during the flood season, power generation overload can be avoided. After unfolding during the dry season, more water is diverted back into the water inlet frame for power generation to avoid shutdown. The power generation frame is fixedly connected with a water control frame located inside the power generation frame. The water control frame is fixedly connected with a riser pipe. Inside the riser pipe, a thick rod and a second spiral frame are fixedly connected. The lower end face of the thick rod is rotatably connected with a machine shaft. The machine shaft is fixedly connected with multiple shaft-connected blades distributed in a circumferential array. A machine frame is arranged below the riser pipe. The machine frame is fixedly connected with the power generation frame through multiple connecting rods distributed in a circumferential array. The machine frame is rotatably connected with the machine shaft. Thus, the water flow flowing into the riser pipe is guided to the position of the shaft-connected blades through the second spiral frame, horizontally impacting the shaft-connected blades, and rotating the machine shaft more efficiently.

[0005] Preferably, the water control frame is provided with a plurality of water inlet holes distributed in a circumferential array. Inside the water inlet holes, multiple rotating shafts are rotatably connected. The rotating shafts are fixedly connected with rotating plates. Between the lower end face of the rotating plates and the water control frame, springs located inside the water inlet holes are fixedly connected. A first spiral frame is fixedly connected between the riser pipe and the power generation frame. An extended blade is slidably connected inside the shaft-connected blade. A groove is arranged inside the extended blade. The shaft-connected blade is fixedly connected with a fixed plate. A threaded shaft is rotatably connected between the fixed plate and the shaft-connected blade. The threaded shaft is located inside the groove. Thus, by rotating the threaded shaft, the extended blade is driven to radially extend. When a large amount of water flow is introduced above the water control frame, the pressure of the water flow drives the rotating plate to rotate around the rotating shaft. After the water flow flows down along the first spiral frame, it impacts the extended extended blade, and rotates and generates electricity in cooperation with the impact received by the shaft-connected blade. It is more efficient during flood seasons, and during dry seasons, it collects water and retracts the extended blade to ensure rotation and power generation and avoid shutdown. Preferably, the adjusting plate can extend into the inside of the connecting rod, and both the adjusting plate and the connecting rod are provided with a plurality of round holes. After adjusting the position of the adjusting plate inside the connecting rod, a screw is used to pass through the connecting rod and the adjusting plate and be threadedly connected with a nut to fixedly connect the connecting rod and the adjusting plate, and adjust the position of the pendulum to ensure the timely rotation of the lightweight arc-shaped plate according to the water flow. Preferably, the water inlet frame is provided with a square hole, and a water flow monitor is fixedly connected inside the square hole. The water flow monitor monitors the water flow flowing into the water inlet frame. Preferably, a flow guide plate is fixedly connected inside the water inlet frame. The flow guide plate reversely guides the water flow flowing into the water inlet frame to horizontally enter the power generation frame for initial rotation inside the power generation frame. Preferably, a hydraulic generator is fixedly connected to the lower end face of the machine frame. The hydraulic generator generates electricity through the rotation of the machine shaft, and the generated electric energy is transmitted to a power storage station for storage through a circuit. Preferably, each of the shaft-connected blades is provided with a machine slot, a motor is fixedly connected in the machine slot, the motor is power-connected to the threaded shaft, and the motor can drive the threaded shaft to rotate; Preferably, a top cover is threadedly connected to the upper side of the power generation frame, and the top cover is fixedly connected with a plurality of handles distributed in a circumferential array. The top cover can be conveniently opened and closed through the handles for convenient maintenance; Preferably, a drain hole is provided on the lower side of the power generation frame. The drain hole is used to drain the water flow after power generation. The power generation frame is fixedly connected with a controller, and the controller receives the data of the water flow monitor and controls each motor.

[0006] Compared with the prior art, the beneficial effects of the present invention are: In the present invention, a pendulum, a lightweight arc-shaped plate and a torsion spring are provided. After adjusting the position by telescoping the adjusting plate in the connecting rod, the position is fixed by screwing a screw through the round hole and threadedly connecting it with a nut. The lightweight arc-shaped plate faces the upstream direction and is slightly inclined upward. When the water flow is sufficient, the water flow pushes the pendulum to move inward of the water inlet frame, driving the lightweight arc-shaped plate to rotate towards the symmetry center, reducing the water flow into the water inlet frame and avoiding overloading of power generation during the flood season. During the dry season, the pendulum droops, and the torsion spring causes the lightweight arc-shaped plate to unfold, guiding more water flow into the water inlet frame for power generation, avoiding the problem of shutdown during the dry season.

[0007] In the present invention, a water control frame, a first spiral frame and shaft-connected blades are provided. When the water flow is sufficient, the impact and pressure of the water flow drive the rotating plate to rotate downward around the rotating shaft, flow along the first spiral frame, and cooperate with the rotating threaded shaft to extend the extending blade. Then the water flow laterally impacts the extending blade, and cooperates with the water flow flowing into the partition water pipe to laterally impact the shaft-connected blades from the middle along the second spiral frame, driving each machine shaft to rotate, so that the hydraulic generator generates electricity. During the dry season, the extending blade retracts into the connecting rod, and the rotating plate closes under the action of the water control frame. The water flow impacts the shaft-connected blades through the second spiral frame, making full use of the water flow during the dry season for power generation and avoiding shutdown. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a three-dimensional schematic diagram of the present invention; Figure 2 is a magnified three-dimensional schematic diagram of the lightweight arc-shaped plate of the present invention; Figure 3 is a three-dimensional schematic diagram of the connecting rod of the present invention; Figure 4 is a three-dimensional schematic diagram of the disassembly of the top cover of the present invention; Figure 5 is a three-dimensional sectional schematic diagram of the power generation frame of the present invention; Figure 6 is a three-dimensional sectional schematic diagram of the water control frame of the present invention; Figure 7This is a three-dimensional schematic diagram of the sectional view of the marine riser of the present invention; Figure 8 This is a three-dimensional schematic diagram of the sectional view of the extended blade of the present invention.

[0009] In the figure: 100, concrete dam; 101, power generation frame; 102, top cover; 103, handle; 104, water inlet frame; 105, water flow monitor; 106, lightweight arc plate; 107, connecting rod; 108, pendulum; 109, guide vane; 110, square hole; 112, connecting block; 113, rotating shaft; 114, round block; 115, torsion spring; 116, thin string; 117, adjusting plate; 118, screw; 119, nut; 120, round hole; 121, drain hole; 122, controller; 123, water inlet hole; 124, water control frame; 125, rotating plate; 126, marine riser; 127, thick rod; 128, first spiral frame; 129, frame; 130, hydraulic generator; 131, connecting rod; 132, water inlet hole; 133, rotating shaft; 134, spring; 135, second spiral frame; 136, machine shaft; 137, shaft-connected blade; 138, extended blade; 139, machine groove; 140, fixed plate; 141, groove; 142, threaded shaft; 143, motor. Detailed implementation manners

[0010] To better understand the present invention, the following examples are described in conjunction with the accompanying drawings. These examples belong to the protection scope of the present invention, but do not limit the protection scope of the present invention.

[0011] Example 1: Please refer to Figure 1-8, the present invention provides a technical solution: a retractable blade hydroelectric power generation device with self - adapting water flow intensity, including a concrete dam 100 poured at the natural drop of a river course. The concrete dam 100 is fixedly connected to a power generation frame 101 and a water inlet frame 104. The water inlet frame 104 is fixedly connected to the power generation frame 101. The power generation frame 101 is provided with a water inlet hole 123 communicating with the water inlet frame 104. The water inlet frame 104 faces upstream and is slightly inclined upward. The water inlet frame 104 is fixedly connected with two symmetrically arranged connecting blocks 112 in the front and back. The connecting block 112 is rotatably connected to a rotating shaft 113. The upper end surface of the rotating shaft 113 is fixedly connected to a round block 114. A torsion spring 115 is fixedly connected between the round block 114 and the connecting block 112. The connecting block 112 is fixedly connected with a lightweight arc - shaped plate 106. The two lightweight arc - shaped plates 106 are symmetrically arranged in the front and back. The lightweight arc - shaped plate 106 is fixedly connected with a connecting rod 107. The connecting rod 107 is fixedly connected with an adjusting plate 117 by screws. One end of a thin string 116 is fixedly connected to the lower end surface of the adjusting plate 117, and the other end is fixedly connected to a pendulum 108. Thus, when the water flow impacts the pendulum 108, it drives the lightweight arc - shaped plate 106 to rotate around the rotating shaft 113. The greater the water flow, the smaller the unfolding angle of the lightweight arc - shaped plate 106. Then, during the flood season, it can avoid power generation overload. After unfolding during the dry season, more water is reversed into the water inlet frame 104 for power generation to avoid shutdown; The adjusting plate 117 can extend into the inside of the connecting rod 107, and both the adjusting plate 117 and the connecting rod 107 are provided with a plurality of round holes 120. After adjusting the position of the adjusting plate 117 inside the connecting rod 107, a screw 118 is used to pass through the connecting rod 107 and the adjusting plate 117 and is threadedly connected with a nut 119 to fixedly connect the connecting rod 107 and the adjusting plate 117, so as to adjust the position of the pendulum 108 and ensure that the lightweight arc - shaped plate 106 rotates in a timely manner according to the water flow; The water inlet frame 104 is provided with a square hole 110, and a water flow monitor 105 is fixedly connected inside the square hole 110. The water flow monitor 105 monitors the water flow flowing into the water inlet frame 104; A flow - guiding plate 109 is fixedly connected inside the water inlet frame 104. The flow - guiding plate 109 reverses the water flow flowing into the water inlet frame 104 to flow horizontally into the power generation frame 101 for initial rotation inside the power generation frame 101.

[0012] Embodiment 2: Please refer to Figure 1-8 , in order to carry out hydroelectric power generation efficiently, a water control frame 124, a second spiral frame 135 and a shaft - connected blade 137 are provided; The power generation frame 101 is fixedly connected with a water control frame 124 located inside the power generation frame 101. The water control frame 124 is fixedly connected with a riser 126. A thick rod 127 and a second spiral frame 135 are fixedly connected inside the riser 126. The lower end surface of the thick rod 127 is rotatably connected with a machine shaft 136. The machine shaft 136 is fixedly connected with a plurality of shaft-connected blades 137 distributed in a circumferential array. A frame 129 is arranged below the riser 126. The frame 129 is fixedly connected with the power generation frame 101 through a plurality of connecting rods 131 distributed in a circumferential array. The frame 129 is rotatably connected with the machine shaft 136. Thus, the water flow flowing into the riser 126 is guided to the shaft-connected blades 137 by the second spiral frame 135, horizontally impacting the shaft-connected blades 137, and rotating the machine shaft 136 more efficiently; A hydraulic generator 130 is fixedly connected to the lower end surface of the frame 129. The hydraulic generator 130 generates electricity by the rotation of the machine shaft 136, and the generated electric energy is transmitted to a storage station for storage through a circuit.

[0013] Embodiment 3: Please refer to Figure 1-8 , in order to avoid the difficulty of the water flow driving the longer blades to rotate during the dry season, resulting in a reduction in power generation efficiency, extension blades 138 and rotating plates 125 are provided.

[0014] The water control frame 124 is provided with a plurality of water inlet holes 132 distributed in a circumferential array. A plurality of rotating shafts 133 are rotatably connected inside the water inlet holes 132. The rotating shafts 133 are fixedly connected with rotating plates 125. A spring 134 located inside the water inlet holes 132 is fixedly connected between the lower end surface of each rotating plate 125 and the water control frame 124. A first spiral frame 128 is fixedly connected between the riser 126 and the power generation frame 101. An extension blade 138 is slidably connected inside the shaft-connected blade 137. A groove 141 is provided inside the extension blade 138. A fixed plate 140 is fixedly connected to the shaft-connected blade 137. A threaded shaft 142 is rotatably connected between the fixed plate 140 and the shaft-connected blade 137. The threaded shaft 142 is located inside the groove 141. Thus, by rotating the threaded shaft 142, the extension blade 138 is driven to radially extend. When a large amount of water flow is introduced above the water control frame 124, the pressure of the water flow drives the rotating plate 125 to rotate around the rotating shaft 133. After the water flow flows down along the first spiral frame 128, it impacts the extended extension blade 138, and rotates and generates electricity in cooperation with the impact received by the shaft-connected blade 137, which is more efficient during the flood season, and collects water and retracts the extension blade 138 during the dry season to ensure rotation and power generation and avoid shutdown; Each of the axially-connected blades 137 is provided with a machine groove 139, and a motor 143 is fixedly connected in the machine groove 139. The motor 143 is power-connected to the threaded shaft 142, and the motor 143 can drive the threaded shaft 142 to rotate; The upper side of the power generation frame 101 is threadedly connected with a top cover 102. The top cover 102 is fixedly connected with a plurality of handles 103 distributed in a circumferential array. The top cover 102 can be conveniently opened and closed through the handles 103 for convenient maintenance; The lower side of the power generation frame 101 is provided with a drain hole 121 for discharging the water flow after power generation. The power generation frame 101 is fixedly connected with a controller 122. The controller 122 receives the data of the water flow monitor 105 and controls each motor 143.

[0015] Working principle: First, at the natural height drop of the river channel, a concrete dam 100 is poured. By adjusting the position of the adjusting plate 117 in the connecting rod 107 and matching the screw 118 to pass through the round hole 120 of the adjusting plate 117 and the connecting rod 107 and then threadedly connecting with the nut 119, the connecting rod 107 and the adjusting plate 117 are fixedly connected. When the water level is low in the dry season, the water flow is small, the pendulum 108 hangs down, and the torsion spring 115 makes the lightweight arc-shaped plate 106 unfold at a larger angle, allowing more water to flow into the water inlet frame 104. After being guided by the guide plate 109, the water flows into the water control frame 124 of the power generation frame 101. Since the water flow is small, the rotating plate 125 cannot rotate, so the water directly gathers into the water separation pipe 126 and flows down along the second spiral frame 135, horizontally impacting the axially-connected blade 137 and driving the shaft 136 to rotate for power generation, making full use of the small water flow for power generation. The extension blade 138 is retracted into the axially-connected blade 137 to prevent the long blade from making it difficult for the water flow to rotate the shaft 136 and ensure the highest power generation efficiency; During the high water period, the water flow rapidly impacts the pendulum 108. The pendulum 108 pulls the adjusting plate 117 and the connecting rod 107. The connecting rod 107 drives the lightweight arc-shaped plate 106 to rotate around the rotating shaft 113, appropriately reducing the unfolding angle of the lightweight arc-shaped plate 106, reducing the water flow into the power generation frame 101, and avoiding damage caused by overloading of power generation due to excessive water flow. When the water flow enters the water control frame 124, the water pressure drives the rotating plate 125 to rotate around the rotating shaft 133. The water flow enters the first spiral frame 128 through the water inlet hole 132 and flows downward along the first spiral frame 128. At the same time, the water flow monitor 105 detects an increase in the water flow, starts the motor 143. The motor 143 drives the threaded shaft 142 to rotate. The threaded shaft 142 drives the extension blade 138 to move radially and unfold. The water flowing out of the first spiral frame 128 laterally impacts the extension blade 138, and cooperates with the water flowing out of the water separation pipe 126 to impact the shaft-connected blade 137, efficiently rotating the machine shaft 136 for power generation. When the water flow decreases, the extension blade 138 automatically retracts. The water after power generation is discharged from the connecting rod 131. The hydraulic generator 130 generates power through the rotation of the machine shaft 136. The electric energy is stored in the nearby power storage station through the circuit, thus realizing the deformable blade power generation with self-adaptive water flow intensity.

[0016] The above embodiments are only used to illustrate the technical concept and features of the present invention, and their purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A water flow intensity adaptive retractable blade hydroelectric power generation device, comprising a concrete dam (100) cast at a natural drop in a river channel, characterized in that: The concrete dam (100) is fixedly connected to a power generation frame (101) and a water inlet frame (104); the water inlet frame (104) is fixedly connected to the power generation frame (101); the power generation frame (101) is provided with a water inlet hole (123) in communication with the water inlet frame (104); the water inlet frame (104) faces upstream and is slightly inclined upward; the water inlet frame (104) is fixedly connected to two front-to-back symmetrical connection blocks (112); the connection blocks (112) are rotatably connected to a rotation shaft (113); the upper end surface of the rotation shaft (113) is fixedly connected to a rotation shaft (113). A round block (114) is connected, a torsion spring (115) is fixedly connected between the round block (114) and the connecting block (112), the connecting block (112) is fixedly connected to a light arc plate (106), the two light arc plates (106) are symmetrical front and back, the light arc plates (106) are fixedly connected to a connecting rod (107), the connecting rod (107) is fixedly connected to an adjustment plate (117) via a screw, the lower end surface of the adjustment plate (117) is fixedly connected to one end of a thin rope (116), and the other end is fixedly connected to a pendulum (108); The power generation frame (101) is fixedly connected to a water control frame (124) located inside the power generation frame (101), the water control frame (124) is fixedly connected to a watertight pipe (126), a thick rod (127) and a second spiral frame (135) are fixedly connected inside the watertight pipe (126), the lower end surface of the thick rod (127) is rotatably connected to a machine shaft (136), the machine shaft (136) is fixedly connected to a plurality of axially connected blades (137) distributed in a circumferential array, a machine frame (129) is provided on the lower side of the watertight pipe (126), the frame (129) is fixedly connected to the power generation frame (101) via a plurality of connecting rods (131) distributed in a circumferential array, and the frame (129) is rotatably connected to the machine shaft (136).

2. A water flow intensity adaptive retractable blade hydroelectric power generation device according to claim 1, characterized in that: The water control frame (124) is provided with a plurality of water inlet holes (132) distributed in a circumferential array. A plurality of rotating shafts (133) are rotatably connected in the water inlet holes (132). The rotating shafts (133) are fixedly connected to a rotating plate (125). A spring (134) located in the water inlet hole (132) is fixedly connected between the lower end surface of the rotating plate (125) and the water control frame (124). A first spiral frame (128) is fixedly connected between the water riser (126) and the power generation frame (101). An extension blade (138) is slidably connected in the shaft-connected blade (137). A groove (141) is provided in the extension blade (138). The shaft-connected blade (137) is fixedly connected to a fixed plate (140). A threaded shaft (142) is rotatably connected between the fixed plate (140) and the shaft-connected blade (137). The threaded shaft (142) is located in the groove (141).

3. A water flow intensity adaptive retractable blade hydroelectric power generation device according to claim 2, characterized in that: The adjustment plate (117) can extend into the interior of the connecting rod (107), and the adjustment plate (117) and the connecting rod (107) are both provided with a plurality of circular holes (120). After adjusting the position of the adjustment plate (117) in the connecting rod (107), a screw (118) is passed through the connecting rod (107) and the adjustment plate (117) and is threadedly connected to a nut (119) to fix the connecting rod (107) and the adjustment plate (117) in connection.

4. A water flow intensity adaptive retractable blade hydroelectric power generation device according to claim 5, characterized in that: The water inlet frame (104) is provided with a square hole (110), and a water flow monitor (105) is fixedly connected in the square hole (110).

5. A water flow intensity adaptive retractable blade hydroelectric power generation device according to claim 4, characterized in that: A guide plate (109) is fixedly connected to the water inlet frame (104), and the guide plate (109) reverses the water flow into the water inlet frame (104) to flow horizontally into the power generation frame (101).

6. A water flow intensity adaptive retractable blade hydroelectric power generation device according to claim 5, characterized in that: The lower end surface of the frame (129) is fixedly connected to a hydroelectric generator (130), and the hydroelectric generator (130) generates electricity through the rotation of the machine shaft (136), and the generated electric energy is transmitted to the power storage station through a line for storage.

7. A water flow intensity adaptive retractable blade hydroelectric power generation device according to claim 6, characterized in that: Each of the shaft-connected blades (137) is provided with a machine slot (139), a motor (143) being fixedly connected in the machine slot (139), the motor (143) being power-connected to the threaded shaft (142), and the motor (143) being capable of driving the threaded shaft (142) to rotate.

8. The water flow intensity adaptive retractable blade hydroelectric power generation device according to claim 7, characterized in that: A top cover (102) is threadedly connected to the upper side of the power generation frame (101); a plurality of handles (103) distributed in a circumferential array are fixedly connected to the top cover (102); a drainage hole (121) is provided on the lower side of the power generation frame (101); the drainage hole (121) is used to discharge water flow after power generation; the power generation frame (101) is fixedly connected to a controller (122); the controller (122) receives data from the water flow monitor (105) and controls each of the motors (143).

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